Water purifier automatic welding production line

Abstract

The application discloses an automatic welding production line for water purifiers, which comprises, in sequence, a temperature sensing tube welding device, a side flow tube welding device, a middle tube welding device, a bent tube welding device and a fixing block welding device. The temperature sensing tube is first welded to a tank body in the temperature sensing tube welding device, then the side flow tube is welded to the tank body in the side flow tube welding device, then the middle tube is welded to the tank body in the middle tube welding device, then the bent tube is welded to the tank body in the bent tube welding device, and finally the fixing block is welded to the tank body in the fixing block welding device. Thus, the temperature sensing tube, the side flow tube, the middle tube, the bent tube and the fixing block can be automatically welded to the tank body, and automatic welding of the water purifier is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to an automatic welding production line for water purifiers. BACKGROUND

[0002] A water purifier comprises a tank body, a temperature sensing tube, a side flow tube, a middle tube, a bent tube and a fixing block. During the production of the water purifier, the temperature sensing tube 93, the side flow tube 92, the middle tube 94, the bent tube 95 and the fixing block 96 need to be welded to the tank body 91. Figure 1 The tank body 91 has an end plate 911 at one end and an open end at the other end. A middle through hole 912 is arranged in the middle of the end plate 911. A through hole 913 is arranged on the end plate 911. A first side hole 915 and a second side hole 914 are arranged on the side wall of the tank body 91. The temperature sensing tube 93, the side flow tube 92 and the middle tube 94 are straight tubes. The bent tube 95 comprises a straight section 951 and bent sections 952 at both ends. During welding, one end of the temperature sensing tube 93 is inserted into the first side hole 915 and welded. One end of the side flow tube 92 is inserted into the second side hole 914 and welded. One end of the middle tube 94 is inserted into the middle through hole 912 and welded. The end of one of the bent sections 952 of the bent tube 95 is inserted into the through hole 913 and welded. The fixing block 96 is sleeved on the middle tube 94 and welded. Figure 1 (b). Those skilled in the art hope to have an automatic welding production line for water purifiers, which can realize automatic welding of the tank body and the temperature sensing tube, the side flow tube, the middle tube, the bent tube and the fixing block, and improve the production efficiency and the welding quality. SUMMARY

[0003] The main purpose of the present application is to provide an automatic welding production line for water purifiers, which aims to solve the technical problem of automatic welding of water purifiers.

[0004] To achieve the above-mentioned purpose, the present application provides an automatic welding production line for water purifiers, which comprises temperature sensing tube welding equipment, side flow tube welding equipment, middle tube welding equipment, bent tube welding equipment and fixing block welding equipment arranged in sequence.

[0005] The temperature sensing tube welding device is used for welding a can body and a temperature sensing tube, and comprises a temperature sensing tube feeding assembly, a first can body feeding and discharging device, a temperature sensing tube positioning mechanism and a first positioning and welding assembly, the first positioning and welding assembly comprises a first support bracket, a first welding mechanism and a first support, the first welding mechanism and the first support are both mounted on the first support bracket, the first support is used for supporting the can body, the first can body feeding and discharging device is used for feeding the can body onto the first support and taking the can body with the welded temperature sensing tube off the first support, the temperature sensing tube feeding assembly is used for feeding the temperature sensing tube to the temperature sensing tube positioning mechanism, the temperature sensing tube positioning mechanism is used for inserting the temperature sensing tube into a first side hole of the can body, and the first welding mechanism is used for welding the can body and the temperature sensing tube on the first support;

[0006] The side flow tube welding device is used for welding a can body and a side flow tube, and comprises a side flow tube feeding assembly, a second can body feeding and discharging device, a side flow tube welding seat and a second welding assembly, the second can body feeding and discharging device is arranged in matching with the first can body feeding and discharging device, the second can body feeding and discharging device is used for feeding the can body with the welded temperature sensing tube to the side flow tube welding seat and taking the can body after welding of the side flow tube off the side flow tube welding seat, the side flow tube feeding assembly is used for feeding the side flow tube to the side flow tube welding seat and inserting the side flow tube into a second side hole of the can body, and the second welding assembly is used for welding the side flow tube and the can body positioned on the side flow tube welding seat;

[0007] The middle tube welding device is used for welding a can body and a middle tube, and comprises a middle tube feeding assembly, a third can body feeding and discharging device, a middle tube positioning assembly and a third welding assembly, the middle tube feeding assembly is used for feeding the middle tube to the middle tube positioning assembly, the third can body feeding and discharging device is arranged in matching with the second can body feeding and discharging device, the third can body feeding and discharging device is used for feeding the can body with the welded side flow tube to the middle tube positioning assembly and sleeving the middle through hole of the can body on the middle tube, and taking the can body after welding of the middle tube off the middle tube positioning assembly, and the third welding assembly is used for welding the middle tube and the can body positioned on the middle tube positioning assembly;

[0008] The elbow pipe welding device is used for welding the tank body and the elbow pipe, and comprises an elbow pipe feeding assembly, a fourth tank body feeding and discharging device, an elbow pipe positioning assembly, a fourth tank body positioning assembly and a fourth welding assembly. The elbow pipe feeding assembly is used for feeding the elbow pipe to the elbow pipe positioning assembly. The fourth tank body feeding and discharging device is arranged in matching with the third tank body feeding and discharging device. The fourth tank body feeding and discharging device is used for feeding the tank body with the welded middle pipe to the fourth tank body positioning assembly and sleeving the perforated sleeve of the tank body on one of the elbow segments of the elbow pipe, and is used for taking the tank body after welding the elbow pipe from the fourth tank body positioning assembly. The fourth welding assembly is used for welding the elbow pipe positioned on the elbow pipe positioning assembly and the tank body positioned on the fourth tank body positioning assembly.

[0009] The fixed block welding device is used for welding the tank body and the fixed block, and comprises a fixed block feeding assembly, a fifth tank body feeding and discharging device, a fifth tank body positioning assembly and a fifth welding assembly. The fifth tank body feeding and discharging device is arranged in matching with the fourth tank body feeding and discharging device. The fifth tank body feeding and discharging device is used for feeding the tank body with the welded elbow pipe to the fifth tank body positioning assembly and taking the tank body after welding the fixed block from the fifth tank body positioning assembly. The fixed block feeding assembly is used for feeding the fixed block to the fifth tank body positioning assembly and sleeving the fixed block on the middle pipe. The fifth welding assembly is used for welding the tank body and the fixed block positioned on the fifth tank body positioning assembly.

[0010] The present application firstly welds the temperature sensing pipe to the tank body in the temperature sensing pipe welding device, then welds the side flow pipe to the tank body in the side flow pipe welding device, then welds the middle pipe to the tank body in the middle pipe welding device, then welds the elbow pipe to the tank body in the elbow pipe welding device, and finally welds the fixed block to the tank body in the fixed block welding device, so that the temperature sensing pipe, the side flow pipe, the middle pipe, the elbow pipe and the fixed block can be automatically welded to the tank body, and the automatic welding of the water purifier is realized.

[0011] Preferably, the temperature sensing tube feeding assembly comprises a temperature sensing tube vibrating disc, a first feeding transfer mechanism and a first feeding clamping mechanism, the first feeding transfer mechanism is located between the temperature sensing tube vibrating disc and the first feeding clamping mechanism; the first feeding transfer mechanism comprises a first feeding sliding table air cylinder and a first feeding positioning block, the first feeding positioning block is installed on the sliding seat of the first feeding sliding table air cylinder and is used for placing the vertical temperature sensing tube, the temperature sensing tube vibrating disc is used for feeding the temperature sensing tubes vertically and sequentially onto the first feeding positioning block; the first feeding clamping mechanism is used for clamping the temperature sensing tube on the first feeding positioning block and feeding it to the temperature sensing tube positioning mechanism, the first feeding clamping mechanism comprises a first feeding support frame, a first feeding rotating air cylinder, a first feeding support, a first clamping lifting air cylinder and a first feeding clamp, the first feeding support frame is located on one side of the temperature sensing tube positioning mechanism, the first feeding rotating air cylinder is installed on the first feeding support frame, the first feeding support is installed on the rotating output end of the first feeding rotating air cylinder, the first clamping lifting air cylinder is installed on the first feeding support, and the first feeding clamp is installed on the output end of the first clamping lifting air cylinder; the first feeding rotating air cylinder drives the first feeding clamp to move between the first feeding positioning block and the temperature sensing tube positioning mechanism.

[0012] Preferably, the first support is used for supporting the tank body with the axis transversely arranged, the temperature sensing tube positioning mechanism comprises a first positioning pushing air cylinder and a temperature sensing tube positioning assembly, the temperature sensing tube positioning assembly is connected with the output end of the first positioning pushing air cylinder and is used for inserting the vertical temperature sensing tube into the first side hole of the tank body; the temperature sensing tube positioning assembly comprises a first air cylinder fixing seat, a temperature sensing tube positioning air cylinder and a temperature sensing tube positioning jig, the first air cylinder fixing seat is connected with the output end of the first positioning pushing air cylinder, the temperature sensing tube positioning air cylinder is installed on the first air cylinder fixing seat with the output end upward, and the temperature sensing tube positioning jig is connected with the output end of the temperature sensing tube positioning air cylinder; the temperature sensing tube positioning jig is used for receiving and positioning the temperature sensing tube of the first feeding clamp, the first positioning pushing air cylinder can drive the temperature sensing tube positioning air cylinder and the temperature sensing tube positioning jig to enter the inside of the tank body from the opening of the tank body, and the temperature sensing tube positioning air cylinder can drive the temperature sensing tube in the temperature sensing tube positioning jig to be inserted upward into the first side hole of the tank body; the temperature sensing tube positioning assembly further comprises a temperature sensing tube positioning clamp used for positioning and fixing the temperature sensing tube, and the temperature sensing tube positioning clamp is installed on the first air cylinder fixing seat.

[0013] Preferably, the first positioning and welding assembly further comprises a first pressing mechanism, the first pressing mechanism comprising a first pressing cylinder, a first pressing block and a temperature sensing tube positioning and limiting block, the first pressing cylinder being installed on the first support bracket, the first pressing block being installed on the output end of the first pressing cylinder and located directly above the first support, the temperature sensing tube positioning and limiting block being installed on the first pressing block and having a first through hole for the temperature sensing tube to pass through; the first pressing mechanism further comprises a temperature sensing tube limiting cylinder and a first telescopic block, the temperature sensing tube limiting cylinder being installed on the first pressing block, and the first telescopic block being installed on the output end of the temperature sensing tube limiting cylinder, the first telescopic block having a first temperature sensing tube passing hole for the temperature sensing tube to pass through.

[0014] Preferably, the side flow tube welding seat is provided with a side flow tube feeding hole for accommodating the vertical passage of the side flow tube, the axis of the side flow tube feeding hole extending transversely, the side flow tube welding seat is provided with a side flow tube upper pressing hole for accommodating the vertical passage of the side flow tube, the axis of the side flow tube upper pressing hole extending vertically, the side flow tube feeding hole and the side flow tube upper pressing hole being in communication, the upper end of the side flow tube upper pressing hole being in communication with the upper side of the side flow tube welding seat, the upper side of the side flow tube welding seat being provided with a can body positioning portion for positioning a can body in a posture with the axis extending transversely, the can body positioning portion being arranged in matching with the side flow tube upper pressing hole, so that the second side hole of the can body is directly opposite to the side flow tube upper pressing hole; the side flow tube feeding assembly comprises a side flow tube feeding groove and an upper pressing assembly, the side flow tube feeding groove being arranged transversely, the side flow tube feeding groove being directly opposite to the side flow tube feeding hole, the lower side of the side flow tube feeding groove being connected with a side flow tube straight vibrator, the side flow tube feeding groove being capable of sequentially arranging and conveying the side flow tubes in a vertical posture to the side flow tube feeding hole, the upper pressing assembly comprising an upper pressing driving device and an upper pressing column, the upper pressing column being arranged in the side flow tube upper pressing hole, the upper pressing driving device being in transmission connection with the upper pressing column, the upper pressing driving device being capable of driving the top of the upper pressing column to move between the upper side and the lower side of the side flow tube feeding hole.

[0015] Preferably, the side flow pipe welding device further comprises a second pressing assembly, the second pressing assembly comprises a second pressing block and a second pressing up-down driving device, the second pressing up-down driving device is capable of driving the second pressing block to move up and down, the second pressing block is used for pressing the can body; the second pressing assembly further comprises a second pressing lateral driving device, the second pressing lateral driving device is capable of driving the second pressing block to move laterally in the direction of entering or exiting the opening of the can body, the second pressing block is used for pressing the sidewall of the lower side of the can body, the lower side of the second pressing block is provided with a second pressing welding through hole and a second feeding pressing blocking part, the second pressing welding through hole and the second feeding pressing blocking part are arranged along the lateral movement direction of the second pressing block, the second feeding pressing blocking part is used for facing the second side hole when the side flow pipe enters the second side hole, and the second pressing welding through hole is used for facing the second side hole when welding.

[0016] Preferably, the upward stroke of the upper jacking column further comprises a position protruding from the upper jacking hole of the side flow pipe, and the upper jacking driving device is capable of driving the top of the upper jacking column to protrude upwardly from the upper jacking hole of the side flow pipe.

[0017] Preferably, the middle pipe feeding assembly comprises a middle pipe feeding clamp jaw and a middle pipe feeding assembly, the middle pipe feeding clamp jaw is used for positioning the feeding middle pipe, the middle pipe feeding assembly comprises a middle pipe feeding clamp and a middle pipe feeding moving device, the middle pipe feeding clamp is arranged on the middle pipe feeding moving device; the middle pipe positioning assembly comprises a middle pipe positioning clamp, the middle pipe positioning clamp is used for positioning the middle pipe placed vertically in a bottom positioning posture, the middle pipe feeding clamp is located above the middle pipe feeding clamp jaw and the middle pipe positioning clamp, the middle pipe feeding moving device is capable of driving the middle pipe feeding clamp to move between the middle pipe feeding clamp jaw and the middle pipe positioning clamp, the middle pipe feeding clamp is used for moving the middle pipe positioned on the middle pipe feeding clamp jaw to the middle pipe positioning clamp, and the top end of the middle pipe positioning clamp is provided with a third can body supporting surface, the third can body supporting surface is used for supporting the end plate of the can body in an opening downward posture.

[0018] Preferably, the middle tube positioning assembly is arranged on the opposite front side of the middle tube feeding assembly, the middle tube feeding assembly further comprises a middle tube feeding groove extending in the front-rear direction, and the middle tube feeding assembly further comprises a middle tube vibrating disc capable of sequentially feeding the middle tube in the posture of extending in the front-rear direction to the middle tube feeding groove; the middle tube feeding assembly further comprises a third rotary feeding device arranged on the front side of the middle tube feeding groove, the third rotary feeding device comprises a third rotary feeding driving device and a middle tube feeding clamp, the middle tube feeding clamp is arranged on the third rotary feeding driving device, the third rotary feeding driving device is capable of driving the middle tube feeding clamp to rotate up and down between the front side of the middle tube feeding groove and the lower side of the middle tube taking clamp, when the middle tube feeding clamp rotates downward, it can move to the front side of the middle tube feeding groove to clamp the middle tube, and when the middle tube feeding clamp rotates upward, it can make the middle tube in the vertical posture; the middle tube taking moving device comprises a middle tube taking front-rear driving device and a middle tube taking up-down driving device, the middle tube taking front-rear driving device is capable of driving the middle tube taking clamp to move in the front-rear direction, and the middle tube taking up-down driving device is capable of driving the middle tube taking clamp to move in the up-down direction.

[0019] Preferably, the middle tube welding equipment further comprises a third tank body pressing assembly arranged on the side of the middle tube positioning assembly, the third tank body pressing assembly comprises a third tank body pressing up-down driving device, a third tank body pressing transverse driving device and a third tank body pressing block, the third tank body pressing block is connected to the third tank body pressing up-down driving device and the third tank body pressing transverse driving device, the third tank body pressing up-down driving device is capable of driving the third tank body pressing block to move up and down, and the third tank body pressing transverse driving device is capable of driving the third tank body pressing block to move transversely in the direction of approaching or moving away from the middle tube positioning clamp, and the third tank body pressing block is used for pressing the tank body downward on the third tank body supporting surface.

[0020] Preferably, the middle tube positioning assembly further comprises a middle tube welding rotary driving device, the middle tube positioning clamp is arranged on the middle tube welding rotary driving device, and the middle tube welding rotary driving device can drive the middle tube positioning clamp to rotate along the axis of the middle tube; the middle tube positioning assembly further comprises a third positioning seat, the third positioning seat is arranged on the middle tube welding rotary driving device, a third middle tube positioning rod extending in the up-down direction is fixedly connected to the third positioning seat, the upper end of the third middle tube positioning rod is provided with a third clamping hole for accommodating the middle tube, the upper side of the third middle tube positioning rod is provided with a plurality of third middle tube clamping petals arranged around the third clamping hole, the middle tube positioning clamp comprises the third middle tube clamping petals, and the upper end surface of the third middle tube clamping petals is the third tank body supporting surface; the middle tube positioning assembly further comprises a third movable sleeve and a third middle tube clamping driving device, the third middle tube clamping driving device is connected with the third positioning seat, the third movable sleeve is arranged on the third middle tube clamping driving device, the third movable sleeve can slide up and down relative to the third positioning seat, the third movable sleeve is arranged on the outer periphery of the third middle tube positioning rod, the outer side of the third middle tube clamping petals is provided with a third guide surface inclined outward from bottom to top, the inner hole of the third movable sleeve is in abutment with the third guide surface, and the third middle tube clamping driving device can drive the third movable sleeve to move up and down to open or compress the third middle tube clamping petals.

[0021] Preferably, the bent tube feeding assembly comprises a bent tube feeding clamp jaw for positioning the feeding bent tube and a bent tube taking assembly, the bent tube taking assembly comprises a bent tube taking clamp jaw and a bent tube taking moving device, and the bent tube taking clamp jaw is arranged on the bent tube taking moving device; the bent tube positioning assembly comprises a bent tube positioning clamp jaw, the bent tube positioning clamp jaw is used for positioning the bent tube and forming a posture with a straight section downward and a bent section upward, the bent tube taking clamp jaw is located above the bent tube feeding clamp jaw and the bent tube positioning clamp jaw, the bent tube taking moving device can drive the bent tube taking clamp jaw to move between the bent tube feeding clamp jaw and the bent tube positioning clamp jaw, and the bent tube taking clamp jaw is used for moving the bent tube positioned on the bent tube feeding clamp jaw to the bent tube positioning clamp jaw; the fourth tank body positioning assembly comprises a fourth tank body positioning clamp, the fourth tank body positioning clamp is arranged beside the bent tube positioning clamp jaw, and the fourth tank body positioning clamp is used for positioning the tank body and forming a posture with an end plate downward and an open mouth upward.

[0022] Preferably, the elbow pipe positioning assembly is arranged on the opposite front side of the elbow pipe feeding assembly, the elbow pipe feeding assembly comprises an elbow pipe feeding groove extending in the front-rear direction, the elbow pipe feeding assembly further comprises an elbow pipe vibrating disc capable of sequentially feeding the elbow pipe with the straight section downward and the elbow section upward to the elbow pipe feeding groove, and the elbow pipe feeding clamp jaw is arranged on the front side of the elbow pipe feeding groove; the elbow pipe feeding assembly further comprises an elbow pipe feeding front-rear driving device, the elbow pipe feeding clamp jaw is arranged on the elbow pipe feeding front-rear driving device, and the elbow pipe feeding front-rear driving device is capable of moving the elbow pipe feeding clamp jaw in the front-rear direction; the left side of the elbow pipe feeding groove is provided with a left first insertion groove penetrating in the left-right direction, the right side of the elbow pipe feeding groove is provided with a right first insertion groove penetrating in the left-right direction, and the front sides of the left first insertion groove and the right first insertion groove are open; the elbow pipe feeding clamp jaw comprises an elbow pipe left feeding clamp block, an elbow pipe right feeding clamp block and an elbow pipe feeding clamping driving device, the elbow pipe feeding clamping driving device is arranged on the elbow pipe feeding front-rear driving device, the elbow pipe left feeding clamp block and the elbow pipe right feeding clamp block are arranged on the left side and the right side of the elbow pipe feeding groove respectively, the elbow pipe feeding clamping driving device is capable of moving the elbow pipe left feeding clamp block and the elbow pipe right feeding clamp block away from or close to each other, the elbow pipe left feeding clamp block is capable of penetrating through the left first insertion groove, the elbow pipe right feeding clamp block is capable of penetrating through the right first insertion groove, and the right side of the elbow pipe left feeding clamp block and the left side of the elbow pipe right feeding clamp block are both provided with an elbow pipe feeding positioning groove capable of clamping the elbow section of the elbow pipe; the elbow pipe taking device comprises an elbow pipe taking front-rear driving device and an elbow pipe taking up-down driving device, the elbow pipe taking front-rear driving device is capable of moving the elbow pipe taking clamp jaw in the front-rear direction, and the elbow pipe taking up-down driving device is capable of moving the elbow pipe taking clamp jaw in the up-down direction; the elbow pipe taking clamp jaw comprises an elbow pipe left taking clamp block, an elbow pipe right taking clamp block and an elbow pipe taking clamping driving device, the elbow pipe taking clamping driving device is connected with the elbow pipe taking front-rear driving device and the elbow pipe taking up-down driving device, and the elbow pipe taking clamping driving device is capable of moving the elbow pipe left taking clamp block and the elbow pipe right taking clamp block away from or close to each other; the right side of the elbow pipe left feeding clamp block is provided with a left second insertion groove for the insertion of the elbow pipe left taking clamp block, the left side of the elbow pipe right feeding clamp block is provided with a right second insertion groove for the insertion of the elbow pipe right taking clamp block, and the elbow pipe left taking clamp block and the elbow pipe right taking clamp block are capable of clamping the straight section of the elbow pipe.The fourth tank body positioning assembly is arranged on the opposite front side of the elbow pipe positioning assembly, the elbow pipe positioning clamp jaw comprises an elbow pipe left positioning clamp block, an elbow pipe right positioning clamp block and an elbow pipe positioning clamp holding driving device, the elbow pipe positioning clamp holding driving device can drive the elbow pipe left positioning clamp block and the elbow pipe right positioning clamp block to move close to or away from each other, the elbow pipe left positioning clamp block and the elbow pipe right positioning clamp block are provided with third insertion grooves for the insertion of the elbow pipe material taking clamp jaw, the right side of the elbow pipe left positioning clamp block and the left side of the elbow pipe right positioning clamp block are provided with elbow pipe positioning grooves capable of clamping the elbow section of the elbow pipe, and the elbow pipe positioning grooves are close to the fourth tank body positioning clamp.

[0023] Preferably, the fourth tank body positioning assembly further comprises a fourth tank body rotating driving device, the fourth tank body positioning clamp is arranged on the fourth tank body rotating driving device, and the fourth tank body rotating driving device can drive the fourth tank body positioning clamp to rotate along the axis of the tank body; the fourth tank body positioning assembly further comprises a fourth positioning seat, the fourth positioning seat is arranged on the fourth tank body rotating driving device, a fourth middle pipe positioning rod extending in the up-down direction is fixedly connected to the fourth positioning seat, the upper end of the fourth middle pipe positioning rod is provided with a fourth clamping hole for accommodating the middle pipe on the tank body, the upper side of the fourth middle pipe positioning rod is provided with a plurality of fourth middle pipe clamping petals arranged around the fourth clamping hole, and the fourth tank body positioning clamp comprises the fourth middle pipe clamping petals; the fourth tank body positioning assembly further comprises a fourth movable sleeve and a fourth tank body clamping driving device, the fourth tank body clamping driving device is arranged on the fourth positioning seat, the fourth movable sleeve is arranged on the fourth tank body clamping driving device, the fourth movable sleeve can slide up and down relative to the fourth positioning seat, the fourth movable sleeve is arranged on the outer periphery of the fourth middle pipe positioning rod, the outer side of the fourth middle pipe clamping petals is provided with a fourth guide surface inclined outward from bottom to top, the inner hole of the fourth movable sleeve is in abutment with the fourth guide surface, and the fourth tank body clamping driving device can drive the fourth movable sleeve to move up and down to open or compress the fourth middle pipe clamping petals.

[0024] Preferably, the pipe welding equipment further comprises a fourth pressing assembly arranged beside the pipe positioning assembly and the fourth tank positioning assembly, the fourth pressing assembly comprising a fourth pressing up-down driving device, a fourth pressing transverse driving device and a fourth pressing block connected to the fourth pressing up-down driving device and the fourth pressing transverse driving device, the fourth pressing up-down driving device being capable of driving the fourth pressing block to move up and down, the fourth pressing transverse driving device being capable of driving the fourth pressing block to move transversely towards or away from the fourth tank positioning clamp, the fourth pressing block being used for pressing the tank during welding; a fourth pressing counterbore and a fourth pressing welding through hole being arranged on the lower side of the fourth pressing block, the fourth pressing counterbore being used for pressing the pipe and the tank before welding, the fourth pressing welding through hole being used for pressing the tank during welding and being arranged outside the perforation and the bent section.

[0025] Preferably, the fifth tank positioning assembly comprises a fifth welding rotary driving device, a fifth positioning seat and a fifth tank pressing device, the fifth positioning seat and the fifth tank pressing device being arranged on the rotary end of the fifth welding rotary driving device, the upper side of the fifth positioning seat being provided with a fifth bearing surface used for bearing the inner side of the end plate of the tank in an open-down posture; the fifth tank pressing device comprising a fifth rotary pressing cylinder and a fifth positioning pressing block, the fifth rotary pressing cylinder being fixed opposite to the fifth positioning seat, the fifth positioning pressing block being arranged on the fifth rotary pressing cylinder, the fifth rotary pressing cylinder being capable of driving the fifth positioning pressing block to rotate to the upper side of the tank and press the end plate of the tank, the upper side of the fifth positioning pressing block being provided with a fixed block positioning groove used for bearing and positioning the fixed block after sleeving into the pipe.

[0026] Preferably, the fixed block feeding assembly comprises a fixed block vibrating disc, a fixed block feeding groove and a fixed block taking assembly, the fixed block vibrating disc being used for feeding the fixed block to the fixed block feeding groove, the fixed block feeding groove being used for positioning the fixed block fed from the fixed block vibrating disc, the fixed block taking assembly comprising a fifth taking driving device and a fifth taking clamp, the fifth taking clamp being arranged on the fifth taking driving device, the fifth taking driving device being capable of driving the fifth taking clamp to move between the fixed block feeding groove and the fifth positioning seat.

[0027] Preferably, a first transfer conveying assembly is arranged between the first can body loading and unloading device and the second can body loading and unloading device, a second transfer conveying assembly is arranged between the second can body loading and unloading device and the third can body loading and unloading device, a third transfer conveying assembly is arranged between the third can body loading and unloading device and the fourth can body loading and unloading device, and a fourth transfer conveying assembly is arranged between the fourth can body loading and unloading device and the fifth can body loading and unloading device; the first transfer conveying assembly is provided with a first transfer fixture, which is used for fixing the can body with the temperature sensing tube welded thereon, and the first transfer conveying assembly can drive the first transfer fixture to move between the first can body loading and unloading device and the second can body loading and unloading device; the second transfer conveying assembly is provided with a second transfer fixture, which is used for fixing the can body with the side flow tube welded thereon, and the second transfer conveying assembly can drive the second transfer fixture to move between the second can body loading and unloading device and the third can body loading and unloading device; the third transfer conveying assembly is provided with a third transfer fixture, which is used for fixing the can body with the middle tube welded thereon, and the third transfer conveying assembly can drive the third transfer fixture to move between the third can body loading and unloading device and the fourth can body loading and unloading device; and the fourth transfer conveying assembly is provided with a fourth transfer fixture, which is used for fixing the can body with the elbow tube welded thereon, and the fourth transfer conveying assembly can drive the fourth transfer fixture to move between the fourth can body loading and unloading device and the fifth can body loading and unloading device. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without any creative effort.

[0029] Figure 1 Fig. (a) is an exploded structural schematic view of the can body, the temperature sensing tube, the side flow tube, the middle tube, the elbow tube and the fixing block of the water purifier before welding, and Fig. (b) is a structural schematic view of the water purifier after welding;

[0030] Figure 2 Fig. is a top view structural schematic view of the automatic welding production line of the water purifier of the present application;

[0031] Figure 3 Fig. is a structural schematic view of the temperature sensing tube welding equipment of the present application;

[0032] Figure 4 Fig. is a structural schematic view of the temperature sensing tube welding equipment of the present application from another angle;

[0033] Figure 5 The structure diagram of the first feeding and transferring mechanism of the present application;

[0034] Figure 6 The structure diagram of the first feeding and clamping mechanism of the present application;

[0035] Figure 7 The structure diagram of the temperature sensing tube positioning mechanism of the present application;

[0036] Figure 8 The structure diagram of the temperature sensing tube positioning mechanism of the present application from another angle;

[0037] Figure 9 The exploded structure diagram of the first positioning and pushing cylinder, the temperature sensing tube positioning fixture and the first limiting block of the present application;

[0038] Figure 10 The structure diagram of the first positioning and welding assembly of the present application;

[0039] Figure 11 The structure diagram of the first welding mechanism of the present application;

[0040] Figure 12 The structure diagram of the first hole positioning mechanism of the present application;

[0041] Figure 13 The structure diagram of the first pressing mechanism of the present application;

[0042] Figure 14 The structure diagram of the first pressing mechanism of the present application from another angle;

[0043] Figure 15 The exploded structure diagram of the first pressing mechanism of the present application;

[0044] Figure 16 The assembly structure diagram of the first supporting member and the first supporting bracket of the present application;

[0045] Figure 17 The overall structure diagram of the lateral flow tube welding equipment of the present application;

[0046] Figure 18 The structure diagram of the lateral flow tube welding equipment of the present application when welding after placing the lateral flow tube and the tank body in the lateral flow tube welding seat;

[0047] Figure 19 The structure diagram of the lateral flow tube feeding groove and the lateral flow tube welding seat of the present application;

[0048] Figure 20 The structure diagram of the lateral flow tube feeding groove and the lateral flow tube welding seat of the present application when the top of the upper jacking column protrudes from the lateral flow tube upper jacking hole;

[0049] Figure 21 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0050] Figure 22 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0051] Figure 23 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0052] Figure 24 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0053] Figure 25 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0054] Figure 26 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0055] Figure 27 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0056] Figure 28 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0057] Figure 29 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0058] Figure 30 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0059] Figure 31 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application; Figure 30 Enlarged view of the middle A;

[0060] Figure 32 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;

[0061] Figure 33 Structure diagram of the upper column moving to the top of the side flow pipe feeding slot and the side flow pipe welding seat of the present application;Figure 32 Partial enlarged view at middle B;

[0062] Figure 34 For the middle tube loading assembly, the middle tube loading assembly, the middle tube positioning assembly and the third tank body pressing assembly of the present application, the structure schematic diagram when the third tank body pressing block presses the tank body downward after the middle tube and the tank body are positioned in the middle tube positioning clamp;

[0063] Figure 35 For the middle tube loading assembly, the middle tube loading assembly, the middle tube positioning assembly and the third tank body pressing assembly of the present application, the structure schematic diagram when the middle tube and the tank body are positioned in the middle tube positioning clamp and are ready for welding;

[0064] Figure 36 The structure schematic diagram of the third rotary loading device of the present application;

[0065] Figure 37 The structure schematic diagram of the middle tube loading assembly of the present application;

[0066] Figure 38 The structure schematic diagram of the middle tube positioning assembly of the present application;

[0067] Figure 39 The upper side partial structure schematic diagram of the middle tube positioning assembly of the present application;

[0068] Figure 40 The structure schematic diagram of the third tank body pressing assembly of the present application;

[0069] Figure 41 The structure schematic diagram of the third welding assembly of the present application;

[0070] Figure 42 The structure schematic diagram of the bent tube welding equipment of the present application;

[0071] Figure 43 The structure schematic diagram of the bent tube welding equipment of the present application after loading the bent tube and the tank body;

[0072] Figure 44 The structure schematic diagram of the bent tube loading assembly of the present application, when the bent tube loading clamp jaw enters the bent tube loading slot to clamp the bent tube;

[0073] Figure 45 The structure schematic diagram of the bent tube loading assembly of the present application, when the bent tube loading clamp jaw enters the bent tube loading slot to clamp the bent tube; Figure 44 Partial enlarged view at middle C;

[0074] Figure 46 The structure schematic diagram of the bent tube loading assembly and the bent tube loading assembly of the present application, when the bent tube loading clamp jaw enters the bent tube loading slot to clamp the bent tube;

[0075] Figure 47For Figure 46 Local enlarged view at D;

[0076] Figure 48 Structure schematic view of the present application when the elbow pipe is clamped by the elbow pipe taking clamp jaw;

[0077] Figure 49 Structure schematic view of the present application when the fourth pressing assembly extends into the tank body to press the tank body after the elbow pipe and the tank body are fed;

[0078] Figure 50 Structure schematic view of the bottom of the fourth pressing block of the present application;

[0079] Figure 51 Structure schematic view of the elbow pipe positioning assembly and the fourth tank body positioning assembly of the present application;

[0080] Figure 52 Structure schematic view of the fourth welding assembly of the present application;

[0081] Figure 53 Structure schematic view of the fixed block welding equipment of the present application;

[0082] Figure 54 Structure schematic view of the fixed block feeding assembly of the present application;

[0083] Figure 55 Structure schematic view of the fifth tank body positioning assembly of the present application when there is no tank body to feed;

[0084] Figure 56 Structure schematic view of the fifth tank body positioning assembly of the present application when there is a tank body to feed;

[0085] Figure 57 Structure schematic view of the fourth welding assembly of the present application;

[0086] Figure 58 Structure schematic view of the first tank body feeding and discharging clamp of the present application when the clamp holds the tank body;

[0087] Figure 59 Structure schematic view of the first transfer conveying assembly of the present application;

[0088] Figure 60 Structure schematic view of the first transfer fixing jig of the present application.

[0089] The realization of the object, functional features and advantages of the present application will be further explained by combining with embodiments and referring to the drawings. DETAILED DESCRIPTION

[0090] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, if the embodiments of the present invention involve descriptions such as "first," "second," etc., then the descriptions such as "first," "second," etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" can explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0091] like Figures 2 to 60 As shown, an automatic welding production line for water purifiers includes, from left to right, a temperature-sensing tube welding device 1, a side-flow tube welding device 2, a central tube welding device 3, a bend tube welding device 4, and a fixed block welding device 5. In other embodiments, the temperature-sensing tube welding device 1, the side-flow tube welding device 2, the central tube welding device 3, the bend tube welding device 4, and the fixed block welding device 5 may also be arranged in a ring or a U-shape, etc.

[0092] The temperature sensing tube welding equipment 1 is used to weld the tank body 91 and the temperature sensing tube 93. The temperature sensing tube welding equipment 1 includes a temperature sensing tube feeding assembly 12, a first tank body loading and unloading device 15, a temperature sensing tube positioning mechanism 13, and a first positioning welding assembly 14. The first positioning welding assembly 14 includes a first support bracket 141, a first welding mechanism 142, and a first support member 143. The first welding mechanism 142 and the first support member 143 are both installed on the first support bracket 141. The first support member 143 is used to support the tank body 91. The first tank body loading and unloading device 15 is used to feed the tank body 91 onto the first support member 143 and to remove the tank body with the welded temperature sensing tube from the first support member 143. The temperature sensing tube feeding assembly 12 is used to feed the temperature sensing tube onto the temperature sensing tube positioning mechanism 13. The temperature sensing tube positioning mechanism 13 is used to insert the temperature sensing tube into the first side hole 915 of the tank body 91. The first welding mechanism 142 is used to weld the tank body 91 and the temperature sensing tube 93 on the first support member 143.

[0093] The side flow pipe welding device 2 is used for welding the can body 91 and the side flow pipe 92, and comprises a side flow pipe feeding assembly 25, a second can body feeding and discharging device 26, a side flow pipe welding seat 21 and a second welding assembly 23. The second can body feeding and discharging device 26 is arranged in matching with the first can body feeding and discharging device 15, and is used for feeding the can body with the welded temperature sensing pipe to the side flow pipe welding seat 21 and discharging the can body with the welded side flow pipe from the side flow pipe welding seat 21. The side flow pipe feeding assembly 25 is used for feeding the side flow pipe to the side flow pipe welding seat 21 and inserting the side flow pipe into the second side hole 914 of the can body 91. The second welding assembly 23 is used for welding the side flow pipe 92 and the can body 91 positioned on the side flow pipe welding seat 21;

[0094] The middle pipe welding device 3 is used for welding the can body 91 and the middle pipe 94, and comprises a middle pipe feeding assembly 32, a third can body feeding and discharging device 37, a middle pipe positioning assembly 34 and a third welding assembly 35. The middle pipe feeding assembly 32 is used for feeding the middle pipe to the middle pipe positioning assembly 34. The third can body feeding and discharging device 37 is arranged in matching with the second can body feeding and discharging device 26, and is used for feeding the can body with the welded side flow pipe to the middle pipe positioning assembly 34 and sleeving the middle through hole 912 of the can body on the middle pipe 94, and discharging the can body with the welded middle pipe from the middle pipe positioning assembly 34. The third welding assembly 35 is used for welding the middle pipe 94 and the can body 91 positioned on the middle pipe positioning assembly 34;

[0095] The bent pipe welding device 4 is used for welding the can body 91 and the bent pipe 95, and comprises a bent pipe feeding assembly 42, a fourth can body feeding and discharging device 48, a bent pipe positioning assembly 44, a fourth can body positioning assembly 45 and a fourth welding assembly 46. The bent pipe feeding assembly 42 is used for feeding the bent pipe to the bent pipe positioning assembly 44. The fourth can body feeding and discharging device 48 is arranged in matching with the third can body feeding and discharging device 37, and is used for feeding the can body with the welded middle pipe to the fourth can body positioning assembly 45 and sleeving the perforation 913 of the can body on one of the bent segments 952 of the bent pipe 95, and discharging the can body with the welded bent pipe from the fourth can body positioning assembly 45. The fourth welding assembly 46 is used for welding the bent pipe 95 positioned on the bent pipe positioning assembly 44 and the can body 91 positioned on the fourth can body positioning assembly 45;

[0096] The fixed block welding device 5 is used for welding the tank body 91 and the fixed block 96, and comprises a fixed block feeding assembly 52, a fifth tank body feeding and discharging device 54, a fifth tank body positioning assembly 53 and a fifth welding assembly 54. The fifth tank body feeding and discharging device 54 is arranged in matching with the fourth tank body feeding and discharging device 48, and is used for feeding the tank body of the welded elbow pipe to the fifth tank body positioning assembly 53 and taking the tank body after welding of the fixed block from the fifth tank body positioning assembly 53. The fixed block feeding assembly 52 is used for feeding the fixed block to the fifth tank body positioning assembly 53 and sleeving the fixed block 96 on the middle pipe 94. The fifth welding assembly 54 is used for welding the tank body 91 and the fixed block 96 positioned on the fifth tank body positioning assembly 53.

[0097] The present application firstly welds the temperature sensing pipe 93 to the tank body 91 in the temperature sensing pipe welding device 1, then welds the side flow pipe 92 to the tank body 91 in the side flow pipe welding device 2, then welds the middle pipe 94 to the tank body 91 in the middle pipe welding device 3, then welds the elbow pipe to the tank body 91 in the elbow pipe welding device 4, and finally welds the fixed block to the tank body 91 in the fixed block welding device 5, so that the temperature sensing pipe, the side flow pipe, the middle pipe, the elbow pipe and the fixed block can be automatically welded to the tank body 91, and the automatic welding of the water purifier is realized.

[0098] In some embodiments, the temperature sensing pipe feeding assembly 12 comprises a temperature sensing pipe vibrating disc 121, a first feeding transfer mechanism 122 and a first feeding clamping mechanism 123, and the first feeding transfer mechanism 122 is arranged between the temperature sensing pipe vibrating disc 121 and the first feeding clamping mechanism 123. A batch of temperature sensing pipes are stored on the temperature sensing pipe vibrating disc 121, and the temperature sensing pipe vibrating disc 121 can arrange and deliver the temperature sensing pipes 93 one by one to the first feeding transfer mechanism 122 when it operates. The temperature sensing pipe vibrating disc 121 can be designed according to the shape and delivery state of the temperature sensing pipes by those skilled in the art of vibrating disc. The first feeding transfer mechanism 122 is used for transferring and adjusting the temperature sensing pipes in the transportation process, and the first feeding clamping mechanism 123 can clamp and deliver the temperature sensing pipes on the first feeding transfer mechanism 122 to the temperature sensing pipe positioning assembly 13.

[0099] The first feeding transfer mechanism 122 comprises a first feeding slide cylinder 1222 and a first feeding positioning block 1223. The first feeding positioning block 1223 is installed on the sliding seat of the first feeding slide cylinder 1222 and is used for placing the vertical temperature sensing tube. The temperature sensing tube vibration disc 121 is used for vertically feeding the temperature sensing tubes to the first feeding positioning block 1223 in sequence. The first feeding fixing frame 1221 is installed on the first rack 11 and is located between the temperature sensing tube vibration disc 121 and the first feeding clamping mechanism 123. The first feeding slide cylinder 1222 is installed on the first feeding fixing frame 1221 and the sliding direction of the sliding table of the first feeding slide cylinder 1222 is the direction of the line between the temperature sensing tube vibration disc 121 and the first feeding clamping mechanism 123. The first feeding positioning block 1223 for placing the temperature sensing tube is installed on the sliding table of the first feeding slide cylinder 1222. The temperature sensing tube placing hole 1224 for accommodating the temperature sensing tube is formed in the first feeding positioning block 1223. When the first feeding slide cylinder 1222 works, the first feeding positioning block 1223 can be driven to approach the temperature sensing tube vibration disc 121. After the temperature sensing tube on the temperature sensing tube vibration disc 121 is fed to the first feeding positioning block 1223, the sliding table of the first feeding slide cylinder 1222 slides to approach the first feeding clamping mechanism 123, so as to facilitate the clamping of the temperature sensing tube by the first feeding clamping mechanism 123. The first feeding transfer mechanism 122 can undertake the transmission between the temperature sensing tube vibration disc 121 and the first feeding clamping mechanism 123, so as to facilitate the feeding of the temperature sensing tube vibration disc 121 and the clamping of the temperature sensing tube by the first feeding clamping mechanism 123.

[0100] The first feeding clamping mechanism 123 is used for clamping the temperature sensing tube on the first feeding positioning block 1223 and feeding the temperature sensing tube to the temperature sensing tube positioning mechanism 13. The first feeding clamping mechanism 123 comprises a first feeding support frame 1231, a first feeding rotary cylinder 1232, a first feeding support 1233, a first clamping lifting cylinder 1234 and a first feeding clamp 1235. The first feeding support frame 1231 is located on one side of the temperature sensing tube positioning mechanism 13. The first feeding rotary cylinder 1232 is installed on the first feeding support frame 1231. The first feeding support 1233 is installed on the rotary output end of the first feeding rotary cylinder 1232. The first clamping lifting cylinder 1234 is installed on the first feeding support 1233. The first feeding clamp 1235 is installed on the output end of the first clamping lifting cylinder 1234. The first feeding rotary cylinder 1232 drives the first feeding clamp 1235 to move between the first feeding positioning block 1223 and the temperature sensing tube positioning mechanism 13.

[0101] The first feeding clamp 1235 comprises a pneumatic finger 12351, a left feeding claw 12352 and a right feeding claw 12353, the left feeding claw 12352 and the right feeding claw 12353 are respectively installed on two clamping fingers of the pneumatic finger 12351, and the left feeding claw 12352 and the right feeding claw 12353 can be controlled to approach or move away from each other by the pneumatic finger 12351 to clamp or release the temperature sensing tube. The first feeding support frame 1231 can be installed on the first rack 11 or the first support bracket 141 and located at one side of the temperature sensing tube positioning mechanism 13, the first feeding rotary air cylinder 1232 is installed on the first feeding support frame 1231 and can drive the first feeding support frame 1233 to rotate, the first feeding support frame 1233 is an L-shaped plate, one side of which is connected with the rotary output end of the first feeding rotary air cylinder 1232, and the other side is provided with the first material clamping and lifting air cylinder 1234, the output end of the first material clamping and lifting air cylinder 1234 is upward, and the connecting plate 1236 is installed on the output end of the first material clamping and lifting air cylinder 1234, and the first feeding clamp 1235 is specifically installed on the connecting plate 1236; specifically, the pneumatic finger 12351 is installed on the lower end face of the connecting plate 1236 and located at one side of the first material clamping and lifting air cylinder 1234, and the clamping fingers of the pneumatic finger 12351 are downward. The process of feeding the temperature sensing tube on the first feeding transfer mechanism 122 to the temperature sensing tube positioning mechanism 13 by the first feeding clamp feeding mechanism 123 is as follows: the output end of the first material clamping and lifting air cylinder 1234 is stretched to drive the connecting plate 1236 and the first feeding clamp 1235 to rise; the first feeding rotary air cylinder 1232 is started to make the rotary output end thereof rotate, thereby driving the first feeding support frame 1233, the first material clamping and lifting air cylinder 1234 and the first feeding clamp 1235 to rotate; when the first feeding clamp 1235 rotates to the position directly above the first feeding transfer mechanism 122, the first feeding rotary air cylinder 1232 is paused, then the output end of the first material clamping and lifting air cylinder 1234 is retracted to drive the first feeding clamp 1235 to descend; when the left feeding claw 12352 and the right feeding claw 12353 in the first feeding clamp 1235 descend to the positions on both sides of the temperature sensing tube, the output end of the first material clamping and lifting air cylinder 1234 stops retraction; the pneumatic finger 12351 is started to drive the left feeding claw 12352 and the right feeding claw 12353 to approach each other and clamp the temperature sensing tube; then the output end of the first material clamping and lifting air cylinder 1234 rises, the rotary output end of the first feeding rotary air cylinder 1232 rotates to the position directly above the temperature sensing tube positioning mechanism 13; finally, the output end of the first material clamping and lifting air cylinder 1234 descends, and the left feeding claw 12352 and the right feeding claw 12353 move away from each other to feed the temperature sensing tube, so as to feed the temperature sensing tube on the temperature sensing tube positioning mechanism 13. The specific structure of the first feeding clamp feeding mechanism 123 is provided to realize fully automatic operation and be applicable to feeding temperature sensing tubes of various shapes; the first feeding clamp feeding mechanism 123 can be arranged at one side of the temperature sensing tube positioning mechanism 13, and the overall structure is relatively compact.

[0102] Further, the first support 143 is used for supporting the tank body 91 with the posture of the axis transversely arranged, the temperature sensing tube positioning mechanism 13 comprises a temperature sensing tube positioning support 131, a first positioning push cylinder 132 and a temperature sensing tube positioning assembly, the temperature sensing tube positioning support 131 is installed on the first rack 11, the first positioning push cylinder 132 is installed on the temperature sensing tube positioning support 131, and the temperature sensing tube positioning assembly is connected with the output end of the first positioning push cylinder 132 and is used for inserting the vertical temperature sensing tube into the first side hole 915 of the tank body 91. The temperature sensing tube positioning support 131 is used for supporting the first positioning push cylinder 132 and the temperature sensing tube positioning assembly, the temperature sensing tube positioning support 131 can elevate the first positioning push cylinder 132 and the temperature sensing tube positioning assembly, so as to avoid the interference between the temperature sensing tube positioning assembly with relatively complex structure and the first rack 11; the temperature sensing tube positioning assembly can be moved by the first positioning push cylinder 132 to push, so that the temperature sensing tube positioning assembly can not only receive the temperature sensing tube conveyed by the temperature sensing tube feeding assembly 12, but also accurately convey the temperature sensing tube to the corresponding position of the first support 143.

[0103] The temperature sensing tube positioning assembly comprises a first cylinder fixing base 1331, a temperature sensing tube positioning cylinder 1332 and a temperature sensing tube positioning jig 1333. The first cylinder fixing base 1331 is connected with the output end of the first positioning pushing cylinder 132. The temperature sensing tube positioning cylinder 1332 is installed on the first cylinder fixing base 1331 and the output end thereof faces upward. The temperature sensing tube positioning jig 1333 is connected with the output end of the temperature sensing tube positioning cylinder 1332. The temperature sensing tube positioning jig 1333 is used for receiving and positioning the temperature sensing tube of the first feeding clamp 1235. The first positioning pushing cylinder 132 can drive the temperature sensing tube positioning cylinder 1332 and the temperature sensing tube positioning jig 1333 to enter the inside of the tank body 91 from the opening of the tank body 91. The temperature sensing tube positioning cylinder 1332 can drive the temperature sensing tube in the temperature sensing tube positioning jig 1333 to be inserted upward into the first side hole 915 of the tank body 91. The first cylinder fixing base 1331 is connected with the output end of the first positioning pushing cylinder 132 through a cylinder joint. The temperature sensing tube positioning cylinder 1332 is installed on the end of the first cylinder fixing base 1331 away from the first positioning pushing cylinder 132 and the output end thereof faces upward. The temperature sensing tube positioning jig 1333 is installed on the output end of the temperature sensing tube positioning cylinder 1332. The temperature sensing tube positioning jig 1333 is used for placing the temperature sensing tube conveyed from the temperature sensing tube feeding assembly 12. When the output end of the first positioning pushing cylinder 132 is stretched and the temperature sensing tube is conveyed to be right below the first supporting piece 143, the output end of the temperature sensing tube positioning cylinder 1332 is stretched, the temperature sensing tube positioning jig 1333 is driven to move upward, and the temperature sensing tube on the temperature sensing tube positioning jig 1333 is driven to move upward. In this way, the temperature sensing tube is preliminarily fixed on the tank body 91 and is inserted into the first side hole 915 of the tank body. The temperature sensing tube positioning assembly is thus arranged. The temperature sensing tube can be preliminarily fixed on the tank body through the stretching of the output end of the temperature sensing tube positioning cylinder 1332. The temperature sensing tube positioning jig 1333 can stably place the temperature sensing tube. Further, the temperature sensing tube positioning assembly further comprises a first limiting block 1334 installed on the first cylinder fixing base 1331. The first limiting block 1334 is provided with a first limiting cavity 13341. The temperature sensing tube positioning jig 1333 is slidably embedded in the first limiting cavity 13341.

[0104] The temperature sensing tube positioning assembly further comprises a temperature sensing tube positioning clamp 1335 for positioning and fixing the temperature sensing tube, which is installed on the first cylinder fixing base 1331. The temperature sensing tube positioning clamp 1335 is used to support the temperature sensing tube, and after being supported, the temperature sensing tube needs to be moved under the action of the first positioning pushing cylinder 132 and the temperature sensing tube positioning cylinder 1332. In order to prevent the temperature sensing tube from shaking or even falling during movement, the temperature sensing tube positioning clamp 1335 is arranged on the first cylinder fixing base 1331 to fix the temperature sensing tube. Specifically, the temperature sensing tube positioning clamp 1335 comprises a pneumatic clamp finger 13351, a first left positioning clamp 13352 and a first right positioning clamp 13353. The pneumatic clamp finger 13351 is installed on the first cylinder fixing base 1331, and the first left positioning clamp 13352 and the first right positioning clamp 13353 are respectively installed on the two clamp fingers of the pneumatic clamp finger 13351. The pneumatic clamp finger 13351 can control the first left positioning clamp 13352 and the first right positioning clamp 13353 to approach or move away from each other to clamp or release the temperature sensing tube. After the temperature sensing tube feeding assembly 12 feeds the temperature sensing tube onto the temperature sensing tube positioning clamp 1333, the pneumatic clamp finger 13351 controls the first left positioning clamp 13352 and the first right positioning clamp 13353 to approach each other to clamp the temperature sensing tube. When the temperature sensing tube positioning cylinder 1332 needs to preliminarily fix the temperature sensing tube on the tank body, the first left positioning clamp 13352 and the first right positioning clamp 13353 move away from each other to release the temperature sensing tube.

[0105] Further, as shown in Figure 10 and Figure 14 The first positioning welding assembly 14 further comprises a first hole positioning mechanism 144, which comprises a first up-down sliding table cylinder 1441, a first left-right sliding table cylinder 1442, a first hole positioning sleeve 1443 and a first hole positioning rod 1444. The first up-down sliding table cylinder 1441 is installed on the first support bracket 141 and located on one side of the first support 143. The first left-right sliding table cylinder 1442 is installed on the sliding seat of the first up-down sliding table cylinder 1441. The first hole positioning sleeve 1443 is connected with the sliding seat of the first left-right sliding table cylinder 1442. The first hole positioning rod 1444 is installed on the first hole positioning sleeve 1443.

[0106] The first hole positioning mechanism 144 is used for positioning the can body 91 fed to the first support 143. The temperature sensing tube is fed from the rear side of the first support bracket 141, and the can body 91 is fed from the front side of the first support bracket 141. Therefore, the first support 143 is arranged at the front side of the first support bracket 141, and the first hole positioning mechanism 144 is also arranged at the front side of the first support bracket 141. The first hole positioning mechanism 144 further comprises a first fixing member 1445 mounted on the first support bracket 141, a first up-down sliding table cylinder 1441 mounted on the first fixing member 1445 and having a sliding seat vertically sliding, and a first left-right sliding table cylinder 1442 mounted on the sliding seat of the first up-down sliding table cylinder 1441 and having a sliding seat horizontally sliding, the horizontal direction being the direction of approaching or moving away from the first support 143. A first hole positioning sleeve 1443 is connected with the sliding seat of the first left-right sliding table cylinder 1442, and a first hole positioning rod 1444 is mounted on the first hole positioning sleeve 1443. The first up-down sliding table cylinder 1441 can drive the first hole positioning rod 1444 to move in the vertical direction when the first up-down sliding table cylinder 1441 operates, and the first left-right sliding table cylinder 1442 can drive the first hole positioning rod 1444 to move in the horizontal direction when the first left-right sliding table cylinder 1442 operates. Under the action of the first up-down sliding table cylinder 1441 and the first left-right sliding table cylinder 1442, the first hole positioning rod 1444 can position the can body on the first support 143, and the first hole positioning rod 1444 can be inserted into the first side hole 915 of the can body 91, so that the can body is accurately positioned, and the subsequent temperature sensing tube can be accurately inserted into the first side hole 915. The first hole positioning mechanism 144 can realize accurate positioning of the can body, and facilitate the subsequent temperature sensing tube to be preliminarily fixed on the can body.

[0107] Further, the first positioning and welding assembly 14 further comprises a first pressing mechanism 145, which comprises a first pressing cylinder 1451, a first pressing block 1452 and a temperature sensing tube positioning and limiting block 1453. The first pressing cylinder 1451 is installed on the first support bracket 141. The first pressing block 1452 is installed on the output end of the first pressing cylinder 1451 and directly above the first support 143. The temperature sensing tube positioning and limiting block 1453 is installed on the first pressing block 1452 and is provided with a first through hole 14531 for the temperature sensing tube to pass through. The first pressing mechanism 145 is used to press and fix the can body 91 loaded on the first support 143. The first pressing mechanism 145 further comprises a first fixing plate 1454 installed on the first support bracket 141. The first pressing cylinder 1451 is installed on the first fixing plate 1454 and directly above the first support 143. The output end of the first pressing cylinder 1451 faces downward. The first pressing block 1452 is installed on the output end of the first pressing cylinder 1451 and is used to press the can body. The temperature sensing tube positioning and limiting block 1453 is installed on the first pressing block 1452 and is used to limit the temperature sensing tube when the temperature sensing tube is initially fixed on the can body. Therefore, the first through hole 14531 for the temperature sensing tube to pass through is formed on the temperature sensing tube positioning and limiting block 1453. The first pressing mechanism 145 can further fix the can body and prevent the can body from being deviated after being loaded on the first support 143, which affects the initial fixation of the temperature sensing tube on the can body.

[0108] The first pressing mechanism 145 further comprises a temperature sensing tube limiting cylinder 1455 and a first telescopic block 1456. The temperature sensing tube limiting cylinder 1455 is installed on the first pressing block 1452, and the first telescopic block 1456 is installed on the output end of the temperature sensing tube limiting cylinder 1455. The first telescopic block 1456 is provided with a first temperature sensing tube passing hole 14561 for the temperature sensing tube to pass through. The temperature sensing tube limiting cylinder 1455 and the first telescopic block 1456 are used to preliminarily fix the temperature sensing tube on the tank body 91, and then flatten the temperature sensing tube to make the end of the temperature sensing tube as flush as possible with the welding position of the tank body. The lower end surface of the first pressing block 1452 is provided with a recess, the temperature sensing tube limiting cylinder 1455 is installed in the recess, and the output end faces the temperature sensing tube positioning limiting block 1453. The first telescopic block 1456 is installed on the output end of the temperature sensing tube limiting cylinder 1455. When the output end of the temperature sensing tube limiting cylinder 1455 is telescoped, the first telescopic block 1456 can be driven to slide directly below the temperature sensing tube positioning limiting block 1453. When the temperature sensing tube is preliminarily fixed on the tank body, the output end of the temperature sensing tube limiting cylinder 1455 is contracted, so that the first temperature sensing tube passing hole 14561 faces the first penetrating hole 14531, and thus the temperature sensing tube can be inserted upward on the tank body. Then, the output end of the first pressing cylinder 1451 is contracted to drive the first pressing block 1452, the temperature sensing tube positioning limiting block 1453, the temperature sensing tube limiting cylinder 1455 and the first telescopic block 1456 to rise synchronously. Then, the output end of the temperature sensing tube limiting cylinder 1455 is extended, so that the first temperature sensing tube passing hole 14561 on the first telescopic block 1456 is dislocated with the first penetrating hole 14531, and the first penetrating hole 14531 is blocked from below by other parts of the first telescopic block 1456. Then, the output end of the first pressing cylinder 1451 is extended to drive the first pressing block 1452, the temperature sensing tube positioning limiting block 1453, the temperature sensing tube limiting cylinder 1455 and the first telescopic block 1456 to descend synchronously. After descending to a certain position, the first telescopic block 1456 abuts against the upper end surface of the temperature sensing tube, and presses the temperature sensing tube downward, so that the upper end surface of the temperature sensing tube is flush with the welding position of the tank body.

[0109] Further, the first welding mechanism 142 comprises a first welding left-right moving device 1421, a first welding left-right moving frame 1422, a first welding up-down moving device 1423 and a first laser welding head 1424. The first welding left-right moving device 1421 is installed on the first support bracket 141, the first welding left-right moving frame 1422 is installed on the output end of the first welding left-right moving device 1421, the first welding up-down moving device 1423 is installed on the first welding left-right moving frame 1422, and the first laser welding head 1424 is installed on the output end of the first welding up-down moving device 1423. The first welding left-right moving device 1421 is installed on the first support bracket 141 and used to drive the first laser welding head 1424 to move in the left-right direction. The first welding left-right moving device 1421 can be a lead screw sliding table. The first welding up-down moving device 1423 is installed on the first welding left-right moving frame 1422 and used to drive the first laser welding head 1424 to move in the vertical direction. The first welding up-down moving device 1423 can be a device composed of a motor, a lead screw, a sliding block and a guide rail. The first laser welding head 1424 is installed on the output end of the first welding up-down moving device 1423 and used to weld the connecting part of the temperature-sensing tube and the tank body 91. The first laser welding head 1424 is a galvanometer first laser welding head 1424, and the laser beam emitted by the first laser welding head 1424 can draw a circle. The first laser welding head 1424 can be flexibly adjusted in position, facilitating the feeding and discharging of the tank body.

[0110] In some specific embodiments, the side flow tube welding device 2 comprises a second rack, and the side flow tube welding seat 21 is fixed on the second rack. The side flow tube welding seat 21 is provided with a side flow tube feeding hole 211 capable of accommodating the vertical passing of the side flow tube, the axis of the side flow tube feeding hole 211 extends horizontally, the side flow tube welding seat 21 is provided with a side flow tube upper lifting hole 212 capable of accommodating the vertical passing of the side flow tube 92, the axis of the side flow tube upper lifting hole 212 extends vertically, the side flow tube feeding hole 211 communicates with the side flow tube upper lifting hole 212, the upper end of the side flow tube upper lifting hole 212 penetrates the upper side of the side flow tube welding seat 21, the upper side of the side flow tube welding seat 21 is provided with a tank body positioning part 213, the tank body positioning part 213 is used for positioning the tank body 91 in the posture of the axis extending horizontally, and the tank body positioning part 213 is matched with the side flow tube upper lifting hole 212, so that the second side hole 914 of the tank body is opposite to the side flow tube upper lifting hole 212.

[0111] The side flow pipe feeding assembly 25 comprises a side flow pipe feeding groove 251 and an upper lifting assembly. The side flow pipe feeding groove 251 is arranged transversely and is opposite to the side flow pipe feeding hole 211. The lower side of the side flow pipe feeding groove 251 is connected with a side flow pipe straight vibrator 252. The side flow pipe feeding groove 251 can sequentially arrange the side flow pipes 92 in vertical posture and convey them to the side flow pipe feeding hole 211. The upper lifting assembly comprises an upper lifting driving device 221 and an upper lifting column 222. The upper lifting column 222 is arranged in the side flow pipe upper lifting hole 212. The upper lifting driving device 221 is in transmission connection with the upper lifting column 222. The upper lifting driving device 221 can drive the top of the upper lifting column 222 to move between the upper side and the lower side of the side flow pipe feeding hole 211.

[0112] The welded temperature sensing pipe is fed to the upper side of the side flow pipe welding seat 21 and is positioned by the tank positioning portion 213. The tank 91 can be fed by the second tank up-down feeding device 26. At this time, the posture of the tank 91 is that the axis is arranged along the front-rear direction and is placed with the opening facing the rear side. The second side hole 914 of the tank 91 is opposite to the side flow pipe upper lifting hole 212. The opening of the tank faces the rear side. Then, the side flow pipe to be welded is fed into the side flow pipe upper lifting hole 212 through the side flow pipe feeding hole 211. When the side flow pipe enters the side flow pipe upper lifting hole 212, the top of the upper lifting column 222 is located at the lower side of the side flow pipe feeding hole 211. Refer to Figure 21 Then, the upper lifting driving device 221 drives the upper lifting column 222 to move upward, lifts the side flow pipe upward, and inserts the upper end of the side flow pipe 92 into the second side hole 914. Refer to Figure 22 Then, the second welding assembly 23 welds the contact position of the side flow pipe and the tank. After the welding is completed, the second tank up-down feeding device 26 takes out the tank. Through the positioning of the side flow pipe and the tank and the welding by the second welding assembly 23, the automatic welding of the tank and the side flow pipe is realized. The positioning accuracy and the welding quality of the side flow pipe and the tank can be improved.

[0113] Specifically, the side flow pipe feeding groove 251 is located on the left side or the right side of the side flow pipe welding seat 21, the side flow pipe feeding groove 251 is arranged transversely, the side flow pipe feeding groove 251 is opposite to the side flow pipe feeding hole 211, the lower side of the side flow pipe feeding groove 251 is connected with the side flow pipe vertical vibrator 252, the side flow pipe feeding groove 251 can arrange and transport the side flow pipes in vertical posture to the side flow pipe feeding hole 211 in sequence, the side flow pipe vertical vibrator 252 can move the side flow pipes to the side flow pipe feeding hole 211, when the top of the top column 222 is lower than the side flow pipe feeding hole 211, the side flow pipes can enter the side flow pipe feeding hole 212, and automatic feeding of the side flow pipes is realized. The side flow pipe feeding assembly 25 further comprises a side flow pipe vibrating disc 253, a plurality of side flow pipes are fed into the side flow pipe vibrating disc 253, the side flow pipe vibrating disc 253 can store a plurality of side flow pipes and can feed the side flow pipes to the side flow pipe feeding groove 251 in sequence, so that the feeding times are reduced. The person skilled in the art of the vibrating disc can design the side flow pipe vibrating disc 253 meeting the requirements according to the shape and feeding state of the side flow pipes.

[0114] Further, the side flow pipe welding equipment 2 further comprises a second pressing assembly 24, the second pressing assembly 24 comprises a second pressing block 241 and a second pressing up-down driving device 242, the second pressing up-down driving device 242 can drive the second pressing block 241 to move up and down, and the second pressing block 241 is used for pressing the tank body 91. The second pressing assembly 24 further comprises a second pressing transverse driving device 243, the second pressing transverse driving device 243 can drive the second pressing block 241 to move transversely in the direction of entering or exiting the opening of the tank body, the second pressing block 241 is used for pressing the sidewall on the lower side of the tank body 91, the lower side of the second pressing block 241 is provided with a second pressing welding through hole 2411 and a second feeding pressing blocking part 2412, the second pressing welding through hole 2411 and the second feeding pressing blocking part 2412 are arranged along the transverse movement direction of the second pressing block 241, the second feeding pressing blocking part 2412 is used for being opposite to the second side hole when the side flow pipe enters the second side hole, and the second pressing welding through hole 2411 is used for being opposite to the second side hole when welding.

[0115] Before welding, the second pressing upper and lower driving device 242 drives the second pressing block 241 to press down the can body 91, so that the can body is kept positioned during welding, improving the welding precision. The second pressing block 241 can press the outer side wall of the upper side of the can body, or extend into the opening of the can body to press the inner side wall of the lower side of the can body. The second pressing upper and lower driving device 242 can adopt a pneumatic cylinder. The second pressing block 241 has two pressing actions, and the second pressing transverse driving device 243 drives the second pressing block 241 to move so that the second feeding pressing blocking part 2412 and the second pressing welding through hole 2411 are respectively opposite to the second side hole 914 of the can body. The first pressing action is to press down using the position where the second feeding pressing blocking part 2412 is opposite to the second side hole, and after the outer periphery of the second feeding pressing blocking part 2412 presses the side wall of the lower side of the can body, the side flow pipe is pushed up by the upper column 222 to be inserted into the second side hole, and the top end of the side flow pipe abuts against the second feeding pressing blocking part 2412, so that the insertion distance of the side flow pipe can be more accurately controlled; the second pressing action is to press down using the second pressing welding through hole 2411, and the second pressing welding through hole 2411 is opposite to the second side hole and the side flow pipe, so that the laser emitted by the second welding assembly 23 can pass through the second pressing welding through hole 2411 to weld the side flow pipe and the welding position of the can body, and at the same time, the can body is pressed to improve the welding precision. The second feeding pressing blocking part 2412 can be the lower side of the second pressing block 241, which is adapted to the case that the upper end surface of the side flow pipe is flush with the side wall of the can body, or can be provided with a counterbore, which is adapted to the case that the side flow pipe protrudes from the side wall. In some embodiments, the second pressing transverse driving device 243 can also drive the second pressing block 241 to extend into or exit from the opening of the can body, and is removed during can body feeding and discharging, and extends into the opening of the can body during welding, so as to facilitate the feeding and discharging of the can body. The second pressing transverse driving device 243 can adopt a multi-position pneumatic cylinder, a lead screw motion module or a gear and rack motion module, etc. The second pressing transverse driving device 243 is arranged on the second rack, and the second pressing upper and lower driving device 242 is arranged on the moving end of the second pressing transverse driving device 243.

[0116] Further, the upward stroke of the upper column 222 further includes a position protruding from the side flow pipe upper top hole 212, and the upper driving device 221 can drive the top of the upper column 222 to protrude upward from the side flow pipe upper top hole 212. Before the can body is fed, the upper driving device 221 first drives the top of the upper column 222 to protrude upward from the side flow pipe upper top hole 212, so that when the can body is fed, the second side hole of the can body can be sleeved on the upper column 222, and the upper column 222 further improves the positioning precision of the can body, and after the feeding of the can body is completed, the upper column 222 is moved downward to the lower side of the side flow pipe feeding hole 211 to feed the side flow pipe. The upper driving device 221 can adopt a multi-position pneumatic cylinder, a lead screw motion module or a gear and rack motion module, etc.

[0117] Further, the upper side of the side flow pipe welding seat 21 is provided with a positioning arc surface 2131 matched with the tank body, the side flow pipe upper hole 212 is communicated with the positioning arc surface 2131, and the tank body positioning part 213 includes the positioning arc surface 2131. The positioning arc surface 2131 is matched with the shape of the tank body, and the tank body placed on the positioning arc surface 2131 can be more simply and accurately positioned.

[0118] Further, the second welding assembly 23 includes a second welding left-right driving device 232, a second welding front-rear driving device 233, a second welding up-down driving device 234 and a second laser welding head 231. The second welding left-right driving device 232 can drive the second laser welding head 231 to move in the left-right direction, the second welding front-rear driving device 233 can drive the second laser welding head 231 to move in the front-rear direction, the second welding up-down driving device 234 can drive the second laser welding head 231 to move in the up-down direction, and the second laser welding head 231 can extend into the opening of the tank body from the rear side. The second welding left-right driving device 232, the second welding front-rear driving device 233 and the second welding up-down driving device 234 can drive the welding laser head to extend into or exit the opening of the tank body, facilitate the feeding and discharging of the tank body, and drive the welding laser head to move along the welding position during welding. Specifically, the second welding left-right driving device 232 is connected to the second rack, the second welding front-rear driving device 233 is arranged on the movement end of the second welding left-right driving device 232, the second welding up-down driving device 234 is arranged on the movement end of the second welding front-rear driving device 233, and the second laser welding head 231 is arranged on the movement end of the second welding up-down driving device 234. The second welding left-right driving device 232, the second welding front-rear driving device 233 and the second welding up-down driving device 234 can adopt a screw movement module or a gear and rack movement module.

[0119] In some specific embodiments, the middle pipe welding equipment 3 includes a third rack 31, a middle pipe feeding assembly 32, a middle pipe positioning assembly 34 and a third welding assembly 35 arranged on the third rack 31. The middle pipe feeding assembly 32 includes a middle pipe feeding clamp jaw 321 and a middle pipe feeding assembly 33, the middle pipe feeding clamp jaw 321 is used for positioning the feeding middle pipe, and the middle pipe feeding assembly 33 includes a middle pipe feeding clamp 331 and a middle pipe feeding moving device 332, the middle pipe feeding clamp 331 is arranged on the middle pipe feeding moving device 332;

[0120] The middle tube positioning assembly 34 comprises a middle tube positioning clamp 341 for positioning the middle tube in a vertical posture from the bottom, the middle tube taking clamp 331 is above the middle tube feeding clamp jaw 321 and the middle tube positioning clamp 341, the middle tube taking moving device 332 can drive the middle tube taking clamp 331 to move between the middle tube feeding clamp jaw 321 and the middle tube positioning clamp 341, the middle tube taking clamp 331 is used to move the middle tube positioned on the middle tube feeding clamp jaw 321 to the middle tube positioning clamp 341, and the top end of the middle tube positioning clamp 341 is provided with a third tank body supporting surface 342 for supporting the end plate 911 of the tank body 91 in an open downward posture.

[0121] The middle tube feeding clamp jaw 321 of the middle tube feeding assembly 32 positions the feeding middle tube, then the middle tube taking moving device 332 of the middle tube taking assembly 33 drives the middle tube taking clamp 331 to move to the middle tube feeding clamp jaw 321, clamps the feeding middle tube to the middle tube positioning clamp 341, the middle tube is in a vertical posture on the middle tube positioning clamp 341, the middle tube positioning clamp 341 clamps the middle tube to realize the positioning of the middle tube; then the tank body 91 is fed, the third tank body feeding and discharging device 37 feeds the tank body 91, the middle through hole 912 of the tank body 91 passes through the middle tube, the upper part of the middle tube protrudes from the end plate 911, so that the end plate 911 of the tank body abuts against the third tank body supporting surface 342, and the positioning of the tank body is realized under the cooperation of the middle tube and the middle through hole 912 and the support of the third tank body supporting surface 342; then the third welding assembly 35 welds the contact part of the middle tube and the tank body 91, and the third tank body feeding and discharging device 37 takes down the tank body after welding. Through the positioning of the middle tube and the tank body and the welding of the third welding assembly 35, the automatic welding of the tank body and the middle tube is realized, and the positioning accuracy and welding quality of the middle tube and the tank body can be improved.

[0122] Further, referring to Figures 30 to 37 , the middle tube positioning assembly 34 is arranged on the front side of the middle tube feeding assembly 32, the middle tube feeding assembly 32 further comprises a middle tube feeding groove 322 extending in the front-rear direction, and the middle tube feeding assembly 32 further comprises a middle tube vibrating disc 323 capable of sequentially conveying the middle tube in a posture extending in the front-rear direction to the middle tube feeding groove 322. The middle tube vibrating disc 323 meeting the requirements can be made by the person skilled in the vibrating disc field according to the shape of the middle tube.

[0123] The middle tube feeding assembly 32 further comprises a third rotary feeding device 324 arranged at the front side of the middle tube feeding groove 322. The third rotary feeding device 324 comprises a third rotary feeding driving device 3241 and a middle tube feeding clamp 321 arranged on the third rotary feeding driving device 3241. The third rotary feeding driving device 3241 can drive the middle tube feeding clamp 321 to rotate up and down between the front side of the middle tube feeding groove 322 and the lower side of the middle tube taking clamp 331. When the middle tube feeding clamp 321 rotates downward, it can clamp a middle tube at the front side of the middle tube feeding groove 322, as shown in Figure 30 and Figure 34 When the middle tube feeding clamp 321 rotates upward, it can make the middle tube in a vertical posture, as shown in Figure 32 .

[0124] The middle tube vibrating disc 323 can store a plurality of middle tubes and sequentially feed the middle tubes to the middle tube feeding groove 322. The posture of the middle tube in the middle tube feeding groove 322 is along the front-rear direction. The third rotary feeding device 324 drives the middle tube feeding clamp 321 to rotate downward, the middle tube feeding clamp 321 clamps a middle tube, and then the third rotary feeding device 324 drives the middle tube feeding clamp 321 to rotate upward, so as to convert the middle tube from a horizontal posture to a vertical posture. Specifically, the third rotary feeding driving device 3241 comprises a third rotary feeding base 32411, a third rotary feeding rotating seat 32412 and a third rotary driving cylinder 32414. The third rotary feeding rotating seat 32412 is rotationally connected with the third rotary feeding base 32411. The middle tube feeding clamp 321 is arranged on the third rotary feeding rotating seat 32412. A third rotary gear 32415 is fixed on the rotation shaft of the third rotary feeding rotating seat 32412. The cylinder body of the third rotary driving cylinder 32414 is connected with the third rotary feeding base 32411. The piston rod of the third rotary driving cylinder 32414 is connected with a third rotary rack 32416 extending along the up-down direction. The third rotary gear 32415 is engaged with the third rotary rack 32416. When the third rotary driving cylinder 32414 drives the third rotary rack 32416 to move up and down, it can drive the third rotary gear 32415 to rotate, thereby driving the third rotary feeding rotating seat 32412 and the middle tube feeding clamp 321 to rotate up and down. In other embodiments, the third rotary feeding driving device 3241 can also drive the third rotary feeding rotating seat 32412 to rotate by using a motor.

[0125] The middle tube taking moving device 332 comprises a middle tube taking front-rear driving device 3321 and a middle tube taking up-down driving device 3322. The middle tube taking front-rear driving device 3321 can drive the middle tube taking clamp 331 to move along the front-rear direction. The middle tube taking up-down driving device 3322 can drive the middle tube taking clamp 331 to move along the up-down direction.

[0126] The middle tube taking-out front and rear driving device 3321 drives the middle tube taking-out clamp 331 to move backward, the middle tube taking-out up and down driving device 3322 drives the middle tube taking-out clamp 331 to move downward, the middle tube taking-out clamp 331 clamps the middle tube on the middle tube feeding clamp jaw 321, then the middle tube taking-out clamp 331 moves upward, then moves forward, and puts the middle tube into the middle tube positioning clamp 341 downward. Specifically, the middle tube taking-out up and down driving device 3322 is connected to the third rack 31, the middle tube taking-out front and rear driving device 3321 is connected to the middle tube taking-out up and down driving device 3322, the middle tube taking-out clamp 331 is connected to the middle tube taking-out front and rear driving device 3321, the middle tube taking-out up and down driving device 3322 drives the middle tube taking-out front and rear driving device 3321 and the middle tube taking-out clamp 331 to move up and down, and the middle tube taking-out front and rear driving device 3321 drives the middle tube taking-out clamp 331 to move forward and backward. The middle tube taking-out clamp 331 can adopt a jaw air cylinder, and the middle tube taking-out clamp 331 clamps the middle part of the middle tube. The middle tube taking-out front and rear driving device 3321 and the middle tube taking-out up and down driving device 3322 can adopt a cylinder, a screw movement module or a gear and rack movement module.

[0127] Further, the middle tube taking-out clamp 331 is connected to the middle tube taking-out rotating device 333, the middle tube taking-out rotating device 333 can drive the middle tube taking-out clamp 331 to rotate upward and downward, so that the middle tube is flipped upward and downward, and the positioning of the angle control of the middle tube is met. For example, a small hole is arranged on the middle tube and needs to match a certain position of the tank body, and whether the position of the small hole is correct can be sensed by a laser sensor.

[0128] Further, the third rotating feeding device 324 further comprises a middle tube feeding rotating driving device 325, the middle tube feeding rotating driving device 325 is connected to the third rotating feeding driving device 3241, the middle tube feeding clamp jaw 321 is connected to the middle tube feeding rotating driving device 325, and the middle tube feeding rotating driving device 325 can drive the middle tube feeding clamp jaw 321 to rotate circumferentially along the axis of the middle tube. In this way, the middle tube can rotate circumferentially along the axis, the circumferential angle of the middle tube can be adjusted, the positioning of the angle control of the middle tube is met, and for example, a small hole is arranged on the middle tube and needs to match a certain position of the tank body, and whether the position of the small hole is correct can be sensed by a laser sensor. The middle tube feeding rotating driving device 325 adopts a motor.

[0129] Further, the middle tube feeding assembly 32 further comprises a third feeding front and rear driving device 326, the third feeding front and rear driving device 326 is connected to the third rack 31, the third rotating feeding device 324 is connected to the third feeding front and rear driving device 326, and the third feeding front and rear driving device 326 can drive the third rotating feeding device 324 to move forward and backward, so as to avoid the third rotating feeding device 324 from colliding with other parts when rotating in a limited space, and improve the compactness of the equipment.

[0130] Further, with reference to Figure 32and Figure 33 The front end of the middle pipe loading groove 322 is provided with a third loading stopper 3221, the third loading stopper 3221 can slide up and down relative to the middle pipe loading groove 322, the lower side of the third loading stopper 3221 is provided with a third loading spring 3222 capable of providing an upward force to the third loading stopper 3221, the third loading stopper 3221 is used to block the middle pipe in the middle pipe loading groove 322, and the left side and the right side of the front side of the middle pipe loading groove 322 are provided with a third loading clamping space 3223 between the third loading stopper 3221. The middle pipe loading clamp jaw 321 comprises a middle pipe left loading clamp block 3211, a middle pipe right loading clamp block 3212 and a middle pipe loading clamp driving device 3213, the middle pipe loading clamp driving device 3213 can drive the middle pipe left loading clamp block 3211 and the middle pipe right loading clamp block 3212 to move close to or away from each other, the middle pipe loading clamp jaw 321 further comprises a third loading pressing block 3214, the third loading pressing block 3214 is fixed relative to the middle pipe loading clamp driving device 3213, the third loading pressing block 3214 is arranged between the middle pipe left loading clamp block 3211 and the middle pipe right loading clamp block 3212, the middle pipe left loading clamp block 3211 and the middle pipe right loading clamp block 3212 are arranged at the rear side of the third loading pressing block 3214, and the third loading pressing block 3214 is arranged in position corresponding to the third loading stopper 3221, and when the third loading pressing block 3214 rotates downward, the third loading stopper 3221 can be pressed downward, and the middle pipe left loading clamp block 3211 and the middle pipe right loading clamp block 3212 can clamp the middle pipe through the third loading clamping space 3223.

[0131] When the middle pipe is loaded to the front end of the middle pipe loading groove 322, the third loading stopper 3221 is in a raised state under the action of the third loading spring 3222, and the third loading stopper 3221 blocks the middle pipe; when the middle pipe loading clamp jaw 321 takes the material, the third rotating loading device 324 drives the middle pipe loading clamp jaw 321 to rotate downward, the third loading pressing block 3214 presses the third loading stopper 3221 downward, the third loading pressing block 3214 abuts against the front end of the middle pipe, the middle pipe left loading clamp block 3211 and the middle pipe right loading clamp block 3212 are inserted into the third loading clamping space 3223 to clamp the middle pipe under the action of the middle pipe loading clamp driving device 3213, so that the middle pipe is taken out from the middle pipe loading groove 322. The middle pipe loading clamp driving device 3213 can adopt a clamp jaw cylinder.

[0132] Further, the middle tube welding device 3 further comprises a third tank body pressing-down assembly 36, which is arranged beside the middle tube positioning assembly 34. The third tank body pressing-down assembly 36 comprises a third tank body pressing-down up-down driving device 361, a third tank body pressing-down transverse driving device 362, and a third tank body pressing-down block 363 connected to the third tank body pressing-down up-down driving device 361 and the third tank body pressing-down transverse driving device 362. The third tank body pressing-down up-down driving device 361 can drive the third tank body pressing-down block 363 to move up and down. The third tank body pressing-down transverse driving device 362 can drive the third tank body pressing-down block 363 to move transversely towards or away from the middle tube positioning clamp 341. The third tank body pressing-down block 363 is used to press the tank body 91 downwards on the third tank body supporting surface 342.

[0133] After the third tank body up-down feeding device 37 sleeves the tank body on the middle tube, the third tank body pressing-down transverse driving device 362 drives the third tank body pressing-down block 363 to move to the upper side of the tank body. Then, the third tank body pressing-down up-down driving device 361 drives the third tank body pressing-down block 363 to press downwards, so as to press the tank body to abut against the third tank body supporting surface 342, thereby realizing the positioning of the tank body. Specifically, the third tank body pressing-down transverse driving device 362 is connected to the third rack 31. The third tank body pressing-down up-down driving device 361 is connected to the third tank body pressing-down transverse driving device 362. The third tank body pressing-down block 363 is connected to the third tank body pressing-down up-down driving device 361. The third tank body pressing-down transverse driving device 362 and the third tank body pressing-down up-down driving device 361 can adopt a driving device such as a pneumatic cylinder, a screw motion module, or a gear and rack motion module. Further, the third tank body pressing-down block 363 is provided with a third pressing-down through hole arranged vertically. The third pressing-down through hole is used to pass through the middle tube during pressing, so that the tank body is not inclined, and the tank body can be pressed downwards and positioned more smoothly.

[0134] Further, the middle tube positioning assembly 34 further comprises a middle tube welding rotating driving device 343. The middle tube positioning clamp 341 is arranged on the middle tube welding rotating driving device 343. The middle tube welding rotating driving device 343 can drive the middle tube positioning clamp 341 to rotate along the axis of the middle tube.

[0135] The middle tube positioning assembly 34 further comprises a third positioning seat 344. The third positioning seat 344 is arranged on the middle tube welding rotating driving device 343. The third positioning seat 344 is fixedly connected with a third middle tube positioning rod 345 extending in the up-down direction. The upper end of the third middle tube positioning rod 345 is provided with a third clamping hole 3451 for accommodating the middle tube. The upper side of the third middle tube positioning rod 345 is provided with a plurality of third middle tube clamping petals 3452 arranged around the third clamping hole 3451. The middle tube positioning clamp 341 comprises the third middle tube clamping petals 3452. The upper end face of the third middle tube clamping petals 3452 is the third tank body supporting surface 342.

[0136] The middle tube positioning assembly 34 further comprises a third movable sleeve 346 and a third middle tube clamping driving device 347, the third middle tube clamping driving device 347 is connected with the third positioning seat 344, the third movable sleeve 346 is arranged on the third middle tube clamping driving device 347, the third movable sleeve 346 can slide up and down relative to the third positioning seat 344, the third movable sleeve 346 is arranged on the outer periphery of the third middle tube positioning rod 345, the outer side of the third middle tube clamping petal 3452 is provided with a third guide surface 34521 which is inclined outward from bottom to top, the inner hole of the third movable sleeve 346 is in abutment with the third guide surface 34521, the third middle tube clamping driving device 347 can drive the third movable sleeve 346 to move up and down to open or compress the third middle tube clamping petal 3452.

[0137] During welding, the middle tube welding rotary driving device 343 drives the middle tube positioning clamp 341, the middle tube and the tank body to rotate, the third laser welding head 351 is welded at the same time, the welding of the middle tube and the tank body is realized. When the middle tube is placed on the middle tube positioning clamp 341, the middle tube is placed in the third clamping hole 3451 of the third middle tube positioning rod 345, the bottom surface of the middle tube is in abutment with the bottom of the third clamping hole 3451, the third middle tube clamping driving device 347 drives the third movable sleeve 346 to move upward, the third movable sleeve 346 compresses the third middle tube clamping petal 3452 inward through the third guide surface 34521 of the third middle tube clamping petal 3452, so that the third middle tube clamping petal 3452 clamps the middle tube to realize the positioning and clamping of the middle tube; during welding, the middle tube welding rotary driving device 343 drives the third positioning seat 344 and the third middle tube positioning rod 345 to rotate, so that the middle tube and the tank body rotate. The middle tube welding rotary driving device 343 can adopt a welding rotary motor to drive the third positioning seat 344 to rotate through a speed reduction gear. The third middle tube clamping driving device 347 can adopt a pneumatic cylinder, the cylinder body of the third middle tube clamping driving device 347 can be fixed on the third positioning seat 344 or fixed with the third machine frame 31, the piston rod of the third middle tube clamping driving device 347 is fixed with the third movable sleeve 346, when the cylinder body of the third middle tube clamping driving device 347 is fixed with the third machine frame 31, the piston rod of the third middle tube clamping driving device 347 can rotate.

[0138] Further, the middle part of the third clamping hole 3451 is provided with a third guide rod 348 arranged vertically, a middle tube clamping space is arranged between the third guide rod 348 and the hole wall of the third clamping hole 3451, and the upper end of the third guide rod 348 is provided with a third guide cone 3481. When the middle tube and the tank body are placed on the middle tube positioning clamp 341, the third guide cone 3481 can guide the middle tube and the tank body, so that the middle tube and the tank body are more smoothly placed and positioned, and the positioning accuracy is improved.

[0139] Further, with reference to Figure 41The third welding assembly 35 comprises a third welding up-down driving device 352, a third welding transverse driving device 353, a third welding head rotating driving device 354 and a third laser welding head 351. The third welding up-down driving device 352 can drive the third laser welding head 351 to move in the up-down direction. The third welding transverse driving device 353 can drive the third laser welding head 351 to move in the direction of approaching or moving away from the middle pipe positioning clamp 341. The third welding head rotating driving device 354 can drive the third laser welding head 351 to rotate transversely. The third welding up-down driving device 352, the third welding transverse driving device 353 and the third welding head rotating driving device 354 can drive the third laser welding head 351 to move to different positions, so as to move away the middle pipe and the tank body from the space of the middle pipe positioning clamp 341 and adjust the welding position. Specifically, the third welding transverse driving device 353 comprises a third welding left-right driving device 3531 and a third welding front-rear driving device 3532. The third welding front-rear driving device 3532 is connected to the third rack 31. The third welding left-right driving device 3531 is connected to the third welding front-rear driving device 3532. The third welding up-down driving device 352 is connected to the third welding left-right driving device 3531. The third welding head rotating driving device 354 is connected to the third welding up-down driving device 352. The third laser welding head 351 is connected to the third welding head rotating driving device 354. The third welding left-right driving device 3531, the third welding front-rear driving device 3532 and the third welding up-down driving device 352 can adopt a screw rod movement module or a gear and rack movement module.

[0140] In some specific embodiments, the pipe bending welding device 4 comprises a fourth rack 41. A pipe bending feeding assembly 42, a pipe bending positioning assembly 44, a fourth tank body positioning assembly 45 and a fourth welding assembly 46 are arranged on the fourth rack 41. The pipe bending feeding assembly 42 comprises a pipe bending feeding clamp jaw 421 and a pipe bending feeding assembly 43. The pipe bending feeding clamp jaw 421 is used for positioning the feeding pipe. The pipe bending feeding assembly 43 comprises a pipe bending feeding clamp jaw 431 and a pipe bending feeding moving device 432. The pipe bending feeding clamp jaw 431 is arranged on the pipe bending feeding moving device 432.

[0141] The pipe bending positioning assembly 44 comprises a pipe bending positioning clamp jaw 441. The pipe bending positioning clamp jaw 441 is used for positioning the pipe and forming the posture of the straight section 951 below and the bent section 952 above. The pipe bending feeding clamp jaw 431 is located above the pipe bending feeding clamp jaw 421 and the pipe bending positioning clamp jaw 441. The pipe bending feeding moving device 432 can drive the pipe bending feeding clamp jaw 431 to move between the pipe bending feeding clamp jaw 421 and the pipe bending positioning clamp jaw 441. The pipe bending feeding clamp jaw 431 is used for moving the pipe positioned on the pipe bending feeding clamp jaw 421 to the pipe bending positioning clamp jaw 441.

[0142] The fourth tank body positioning assembly 45 comprises a fourth tank body positioning clamp 451 arranged beside the elbow positioning clamp jaw 441, and the fourth tank body positioning clamp 451 is used for positioning the tank body 91 and forming the posture of the end plate 911 being downward and the open end being upward.

[0143] The elbow feeding clamp jaw 421 of the elbow feeding device positions the feeding elbow, and then the elbow taking moving device 432 of the elbow taking assembly 43 drives the elbow taking clamp jaw 431 to move to the elbow feeding clamp jaw 421, clamps the feeding elbow to the elbow positioning clamp jaw 441, and the elbow is in the posture of the straight section 951 being downward and the bent section 952 being upward on the elbow positioning clamp jaw 441, the elbow positioning clamp jaw 441 clamps the elbow to realize the positioning of the elbow; then the tank body 91 is fed, the tank body is fed by the fourth tank body feeding and discharging device 48, the tank body is fed to the fourth tank body positioning clamp 451, the tank body 91 is located on the upper side of the elbow, the perforation 913 of the tank body 91 is sleeved into the bent section 952 of the elbow to realize the positioning of the tank body; then the fourth welding assembly 46 welds the contact part of the elbow and the tank body, and the fourth tank body feeding and discharging device 48 takes down the tank body after welding. Through the positioning of the elbow and the tank body, the fourth welding assembly 46 is used for welding, so that the automatic welding of the tank body and the elbow is realized, and the positioning accuracy and the welding quality of the elbow and the tank body can be improved.

[0144] Further, the elbow positioning assembly 44 is arranged on the front side of the elbow feeding assembly 42, the elbow feeding assembly 42 comprises an elbow feeding groove 422 extending in the front-rear direction, the elbow feeding assembly 42 further comprises an elbow vibration disc 423 capable of sequentially conveying the elbow with the straight section being downward and the bent section being upward to the elbow feeding groove 422, and the elbow feeding clamp jaw 421 is arranged on the front side of the elbow feeding groove 422. The elbow vibration disc 423 can store a plurality of elbows and can sequentially feed the elbows to the elbow feeding groove 422, and the posture of the elbow in the elbow feeding groove 422 is that the straight section is downward and the bent section is upward, and the elbow is clamped by the elbow feeding clamp jaw 421. The person skilled in the vibration disc technical field can design the elbow vibration disc 423 meeting the requirements according to the shape and feeding state of the elbow.

[0145] The elbow feeding assembly 42 further comprises an elbow feeding front-rear driving device 424, the elbow feeding clamp jaw 421 is arranged on the elbow feeding front-rear driving device 424, and the elbow feeding front-rear driving device 424 can drive the elbow feeding clamp jaw 421 to move in the front-rear direction;

[0146] The left side of the elbow feeding groove 422 is provided with a left first insertion groove 4221 penetrating left and right, the right side of the elbow feeding groove 422 is provided with a right first insertion groove 4222 penetrating left and right, and the front sides of the left first insertion groove 4221 and the right first insertion groove 4222 are open;

[0147] The elbow pipe feeding clamp jaw 421 comprises an elbow pipe left feeding clamp block 4211, an elbow pipe right feeding clamp block 4212 and an elbow pipe feeding clamping driving device 4213. The elbow pipe feeding clamping driving device 4213 is arranged on the elbow pipe feeding front and rear driving device 424. The elbow pipe left feeding clamp block 4211 and the elbow pipe right feeding clamp block 4212 are arranged on the left side and the right side of the elbow pipe feeding groove 422 respectively. The elbow pipe feeding clamping driving device 4213 can drive the elbow pipe left feeding clamp block 4211 and the elbow pipe right feeding clamp block 4212 to move close to or away from each other. The elbow pipe left feeding clamp block 4211 can pass through the left first insertion groove 4221. The elbow pipe right feeding clamp block 4212 can pass through the right first insertion groove 4222. The right side of the elbow pipe left feeding clamp block 4211 and the left side of the elbow pipe right feeding clamp block 4212 are both provided with an elbow pipe feeding positioning groove 4214 capable of clamping the elbow of the elbow pipe. The shape of the elbow pipe feeding positioning groove 4214 is matched with the elbow.

[0148] The elbow pipe feeding moving device 432 comprises an elbow pipe feeding front and rear driving device 4321 and an elbow pipe feeding up and down driving device 4322. The elbow pipe feeding front and rear driving device 4321 can drive the elbow pipe feeding clamp jaw 431 to move in the front and rear directions. The elbow pipe feeding up and down driving device 4322 can drive the elbow pipe feeding clamp jaw 431 to move in the up and down directions.

[0149] The elbow pipe feeding clamp jaw 431 comprises an elbow pipe left feeding clamp block 4311, an elbow pipe right feeding clamp block 4312 and an elbow pipe feeding clamping driving device 4313. The elbow pipe feeding clamping driving device 4313 is connected with the elbow pipe feeding front and rear driving device 4321 and the elbow pipe feeding up and down driving device 4322. The elbow pipe feeding clamping driving device 4313 can drive the elbow pipe left feeding clamp block 4311 and the elbow pipe right feeding clamp block 4312 to move close to or away from each other.

[0150] The right side of the elbow pipe left feeding clamp block 4211 is provided with a left second insertion groove 42111 for inserting the elbow pipe left feeding clamp block 4311. The left side of the elbow pipe right feeding clamp block 4212 is provided with a right second insertion groove 42121 for inserting the elbow pipe right feeding clamp block 4312. The elbow pipe left feeding clamp block 4311 and the elbow pipe right feeding clamp block 4312 can clamp the straight section of the elbow pipe.

[0151] The fourth tank body positioning assembly 45 is arranged on the front side of the elbow pipe positioning assembly 44. The elbow pipe positioning clamping jaw 441 comprises an elbow pipe left positioning clamping block 4411, an elbow pipe right positioning clamping block 4412 and an elbow pipe positioning clamping driving device 4413. The elbow pipe positioning clamping driving device 4413 can drive the elbow pipe left positioning clamping block 4411 and the elbow pipe right positioning clamping block 4412 to move towards or away from each other. The elbow pipe left positioning clamping block 4411 and the elbow pipe right positioning clamping block 4412 are provided with third insertion grooves 4414, in which the elbow pipe taking clamping jaw 431 can be inserted. The right side of the elbow pipe left positioning clamping block 4411 and the left side of the elbow pipe right positioning clamping block 4412 are provided with elbow pipe positioning grooves 4415, which can clamp the elbow of the elbow pipe. The elbow pipe positioning grooves 4415 are arranged close to the fourth tank body positioning clamps 451. The fourth tank body supporting surface 4416 is arranged on the upper side of the elbow pipe left positioning clamping block 4411 and the elbow pipe right positioning clamping block 4412.

[0152] When the elbow pipe is sent to the front side of the elbow pipe feeding slot 422 and the elbow pipe feeding clamping jaw 421 clamps the elbow pipe, the elbow pipe is opposite to the left first insertion groove 4221 and the right first insertion groove 4222. The elbow pipe feeding forward and backward driving device 424 drives the elbow pipe feeding clamping jaw 421 to move backward, so that the elbow pipe left feeding clamping block 4211 is opposite to the left first insertion groove 4221 and the elbow pipe right feeding clamping block 4212 is opposite to the right first insertion groove 4222. Then, the elbow pipe feeding clamping driving device 4213 drives the elbow pipe left feeding clamping block 4211 and the elbow pipe right feeding clamping block 4212 to move towards each other. The elbow pipe left feeding clamping block 4211 passes through the left first insertion groove 4221 and the elbow pipe right feeding clamping block 4212 passes through the right first insertion groove 4222. The elbow pipe feeding positioning groove 4214 clamps the elbow of the elbow pipe, so as to realize the clamping of the elbow pipe by the elbow pipe feeding clamping jaw 421. Then, the elbow pipe feeding forward and backward driving device 424 drives the elbow pipe feeding clamping jaw 421 to move forward, so as to take the elbow pipe out of the elbow pipe feeding slot 422, so that the elbow pipe taking clamping jaw 431 can clamp the elbow pipe. The elbow pipe feeding forward and backward driving device 424 can adopt a cylinder, a screw movement module or a gear and rack movement module.

[0153] The pipe bending taking gripper 431 moves backward to the upper side of the pipe bending feeding gripper 421 and then moves downward, the pipe bending left taking gripper block 4311 and the pipe bending right taking gripper block 4312 are inserted into the left second insertion slot 42111 and the right second insertion slot 42121 from above, the pipe bending taking clamping driving device 4313 drives the pipe bending left taking gripper block 4311 and the pipe bending right taking gripper block 4312 to approach each other to clamp the straight section of the pipe, so that the pipe bending taking gripper 431 clamps the pipe; then the pipe bending taking gripper 431 clamps the pipe and moves upward, and then moves to the upper side of the pipe bending positioning assembly 44 and then downward to put the pipe into the pipe bending positioning gripper 441. Specifically, the pipe bending taking up-down driving device 4322 is connected to the fourth rack 41, the pipe bending taking front-rear driving device 4321 is connected to the pipe bending taking up-down driving device 4322, and the pipe bending taking gripper 431 is connected to the pipe bending taking front-rear driving device 4321. The pipe bending taking up-down driving device 4322 and the pipe bending taking front-rear driving device 4321 can adopt a cylinder, a screw motion module or a gear and rack motion module.

[0154] When the pipe bending taking gripper 431 puts the pipe into the pipe bending positioning gripper 441, the pipe bending left positioning gripper block 4411 and the pipe bending right positioning gripper block 4412 are first in an open state, the pipe bending taking gripper 431 clamps the pipe and inserts it into the third insertion slot 4414 from above, the pipe is placed between the pipe bending left positioning gripper block 4411 and the pipe bending right positioning gripper block 4412, and then the pipe bending positioning clamping driving device 4413 drives the pipe bending left positioning gripper block 4411 and the pipe bending right positioning gripper block 4412 to approach each other, the pipe bending positioning slot 4415 clamps the bent section of the pipe, so that the pipe is positioned and put into the pipe bending positioning gripper 441. The pipe bending positioning clamping driving device 4413 can adopt a cylinder.

[0155] Further, referring to Figure 51 , the fourth tank body positioning assembly 45 further comprises a fourth tank body rotating driving device 452, and the fourth tank body positioning clamp 451 is arranged on the fourth tank body rotating driving device 452, and the fourth tank body rotating driving device 452 can drive the fourth tank body positioning clamp 451 to rotate along the axis of the tank body;

[0156] The fourth tank body positioning assembly 45 further comprises a fourth positioning seat 453, and the fourth positioning seat 453 is arranged on the fourth tank body rotating driving device 452, and the fourth positioning seat 453 is fixedly connected with a fourth middle pipe positioning rod 454 extending in the up-down direction, the upper end of the fourth middle pipe positioning rod 454 is provided with a fourth clamping hole 4541 for accommodating the middle pipe on the tank body, and the upper side of the fourth middle pipe positioning rod 454 is provided with a plurality of fourth middle pipe clamping petals 4542 arranged around the fourth clamping hole 4541, and the fourth tank body positioning clamp 451 comprises the fourth middle pipe clamping petals 4542;

[0157] The fourth tank positioning assembly 45 further comprises a fourth movable sleeve 455 and a fourth tank clamping driving device 456, the fourth tank clamping driving device 456 is arranged on the fourth positioning seat 453, the fourth movable sleeve 455 is arranged on the fourth tank clamping driving device 456, the fourth movable sleeve 455 can slide up and down relative to the fourth positioning seat 453, the fourth movable sleeve 455 is arranged on the outer periphery of the fourth middle pipe positioning rod 454, the outer side of the fourth middle pipe clamping petal 4542 is provided with a fourth guide surface 45421 which is inclined outward from bottom to top, the inner hole of the fourth movable sleeve 455 is in abutment with the fourth guide surface 45421, the fourth tank clamping driving device 456 can drive the fourth movable sleeve 455 to move up and down to open or compress the fourth middle pipe clamping petal 4542.

[0158] When the tank is placed on the fourth tank positioning clamp 451, the perforation 913 of the end plate 911 may not be able to face the bent section directly, the perforation 913 cannot be sleeved into the bent section, therefore the fourth tank rotating driving device 452 can drive the tank to rotate, so that the perforation faces the bent section directly and can be sleeved outside the bent section. The fourth tank positioning clamp 451 clamps the tank when the tank rotates, the tank positioning can be released when the fourth pressing block 473 is pressed down for the first time, and the tank is clamped again after positioning. Further, the bent pipe welding equipment 4 further comprises a first visual detection device 457, the first visual detection device 457 is arranged above the fourth tank positioning clamp 451, after the tank is placed on the fourth tank positioning clamp 451, the first visual detection device 457 detects the position of the perforation 913, and the angle of rotation of the tank can be obtained.

[0159] The fourth tank body positioning assembly 45 further comprises a fourth movable sleeve 455 and a fourth tank body clamping driving device 456, the fourth tank body clamping driving device 456 is arranged on the fourth positioning seat 453, the fourth movable sleeve 455 is arranged on the fourth tank body clamping driving device 456, the fourth movable sleeve 455 can slide up and down relative to the fourth positioning seat 453, the fourth movable sleeve 455 is arranged on the outer periphery of the fourth middle pipe positioning rod 454, the outer side of the fourth middle pipe clamping petal 4542 is provided with a fourth guide surface 45421 which inclines outward from bottom to top, the inner hole of the fourth movable sleeve 455 is in abutment with the fourth guide surface 45421, the fourth tank body clamping driving device 456 can drive the fourth movable sleeve 455 to move up and down to open or compress the fourth middle pipe clamping petal 4542. When the tank body is placed on the fourth tank body positioning clamp 451, the middle pipe on the tank body is placed in the fourth clamping hole 4541 of the fourth middle pipe positioning rod 454, the fourth tank body clamping driving device 456 drives the fourth movable sleeve 455 to move upward, the fourth movable sleeve 455 compresses the fourth middle pipe clamping petal 4542 inward through the fourth guide surface 45421 of the fourth middle pipe clamping petal 4542, so that the fourth middle pipe clamping petal 4542 clamps the middle pipe to realize the clamping of the tank body. The fourth tank body rotating driving device 452 can adopt a welded rotating motor to drive the fourth positioning seat 453 to rotate through a speed reduction gear. The fourth tank body clamping driving device 456 can adopt a gas cylinder, and the fourth tank body clamping driving device 456 can be fixed on the fourth positioning seat 453.

[0160] Further, the pipe bending and welding equipment 4 further comprises a fourth pressing assembly 47, the fourth pressing assembly 47 is arranged beside the pipe positioning assembly 44 and the fourth tank body positioning assembly 45, the fourth pressing assembly 47 comprises a fourth pressing up-down driving device 471, a fourth pressing transverse driving device 472 and a fourth pressing block 473, the fourth pressing block 473 is connected to the fourth pressing up-down driving device 471 and the fourth pressing transverse driving device 472, the fourth pressing up-down driving device 471 can drive the fourth pressing block 473 to move up and down, the fourth pressing transverse driving device 472 can drive the fourth pressing block 473 to move transversely in the direction of approaching or moving away from the fourth tank body positioning clamp 451, and the fourth pressing block 473 is used for pressing the tank body during welding;

[0161] The lower side of the fourth pressing block 473 is provided with a fourth pressing counterbore 4731 and a fourth pressing welding through hole 4732, the fourth pressing counterbore 4731 is used for pressing the pipe and the tank body before welding, and the fourth pressing welding through hole 4732 is used for pressing the tank body during welding and is arranged on the outer side of the perforation and the bent section.

[0162] Before welding, the fourth pressing transverse driving device 472 drives the fourth pressing block 473 to move to the upper side of the tank body, and then the fourth pressing up-down driving device 471 drives the fourth pressing block 473 to extend downward into the tank body and press the tank body, so that the tank body is kept positioned during welding, improving the welding precision. The fourth tank body supporting surface 4416 is arranged on the upper side of the pipe bending positioning jaw 441, and can support the end plate 911 of the tank body, and the bending section protrudes from the fourth tank body supporting surface 4416 and is inserted into the perforation 913. The fourth pressing block 473 can press the end plate on the fourth tank body supporting surface 4416. The fourth pressing transverse driving device 472 is connected to the fourth rack 41, the fourth pressing up-down driving device 471 is connected to the fourth pressing transverse driving device 472, and the fourth pressing block 473 is connected to the fourth pressing up-down driving device 471. The fourth pressing transverse driving device 472 and the fourth pressing up-down driving device 471 can adopt a screw motion module or a gear and rack motion module.

[0163] The fourth pressing block 473 has two pressing actions, the first pressing action is to press downward by using the fourth pressing counterbore 4731, the bottom surface of the fourth pressing counterbore 4731 can press the end surface of the bending section of the pipe, and the outer peripheral part of the fourth pressing counterbore 4731 can press the end plate, so that the distance between the bending section and the end plate can be more accurately defined; the second pressing action is to press downward by using the fourth pressing welding through hole 4732, the fourth pressing welding through hole 4732 is opposite to the bending section and the perforation 913, the laser emitted by the fourth laser welding head 461 can pass through the fourth pressing welding through hole 4732 to weld the welding position, and the tank body is pressed to improve the welding precision.

[0164] Further, referring to Figure 52 , the fourth welding assembly 46 includes a fourth welding up-down driving device 462 and a fourth welding transverse driving device 463, the fourth laser welding head 461 is connected to the fourth welding up-down driving device 462 and the fourth welding transverse driving device 463, the fourth welding up-down driving device 462 can drive the fourth laser welding head 461 to move in the up-down direction, and the fourth welding transverse driving device 463 can drive the fourth laser welding head 461 to move left and right in the direction of approaching or moving away from the fourth tank body positioning jaw 451.

[0165] The fourth welding up-down driving device 462 and the fourth welding transverse driving device 463 can drive the fourth laser welding head 461 to move to different positions, so that the elbow pipe and the tank body can be placed in the space of the elbow pipe positioning clamp 441 and the fourth tank body positioning clamp 451, and the welding position can be adjusted. Specifically, the fourth welding transverse driving device 463 is connected to the fourth rack 41, the fourth welding up-down driving device 462 is connected to the fourth welding transverse driving device 463, and the fourth laser welding head 461 is connected to the fourth welding up-down driving device 462. The fourth welding transverse driving device 463 and the fourth welding up-down driving device 462 can adopt a screw motion module or a gear and rack motion module.

[0166] In some specific embodiments, the fixed block welding device 5 comprises a fifth rack 51, and the fixed block feeding assembly 52, the fifth tank body positioning assembly 53 and the fifth welding assembly 54 are arranged on the fifth rack 51.

[0167] The fifth tank body positioning assembly 53 comprises a fifth welding rotary driving device 531, a fifth positioning seat 532 and a fifth tank pressing device 533. The fifth welding rotary driving device 531 is connected to the fifth rack 51, and the fifth positioning seat 532 and the fifth tank pressing device 533 are arranged on the rotating end of the fifth welding rotary driving device 531. The upper side of the fifth positioning seat 532 is provided with a fifth bearing surface 5321, which is used to bear the inner side of the end plate 911 of the tank body 91 in an open downward posture.

[0168] The fifth tank pressing device 533 comprises a fifth rotary pressing cylinder 5331 and a fifth positioning pressing block 5332. The fifth rotary pressing cylinder 5331 is fixed opposite to the fifth positioning seat 532, and the fifth positioning pressing block 5332 is arranged on the fifth rotary pressing cylinder 5331. The fifth rotary pressing cylinder 5331 can drive the fifth positioning pressing block 5332 to rotate to the upper side of the tank body 91 and press the end plate 911 of the tank body 91. The upper side of the fifth positioning pressing block 5332 is provided with a fixed block positioning groove 5333, which is used to bear and position the fixed block after being sleeved into the pipe.

[0169] The fifth tank body feeding and discharging device 54 feeds the tank body 91 of the fixed block to be welded to the fifth supporting surface 5321 of the fifth positioning seat 532, at this time, the tank body 91 is open downward, the end plate 911 abuts against the fifth supporting surface 5321, and the middle pipe is on the upper side of the tank body; then the fifth rotating pressing cylinder 5331 drives the fifth positioning pressing block 5332 to rotate to the upper side of the end plate of the tank body, and presses the tank body 91 downward, so that the tank body is fixed with the fifth positioning seat 532, and the fixed block positioning groove 5333 on the fifth positioning pressing block 5332 is opposite to the position of the fixed block fixed on the middle pipe. Then the fixed block feeding assembly 52 feeds the fixed block, the fixed block is sleeved on the middle pipe, and the fixed block falls into the fixed block positioning groove 5333 to be fixed. Then the fifth welding rotating driving device 531 drives the fifth positioning seat 532 and the fifth pressing tank device 533 to rotate, and the fifth welding assembly 54 welds the contact position of the fixed block and the middle pipe, so that the automatic welding of the fixed block and the tank body is realized. The fifth welding rotating driving device 531 can drive the fifth positioning seat 532 to rotate by using a motor and a gear. In some embodiments, the number of the fifth rotating pressing cylinder 5331 and the fifth positioning pressing block 5332 is two, and they are arranged on both sides of the tank body respectively.

[0170] Further, the fixed block feeding assembly 52 comprises a fixed block vibrating disc 521, a fixed block feeding groove 522 and a fixed block taking assembly 523. The fixed block vibrating disc 521 is used for feeding the fixed block to the fixed block feeding groove 522. The fixed block feeding groove 522 is used for positioning the fixed block fed from the fixed block vibrating disc 521. The fixed block taking assembly 523 comprises a fifth taking driving device 5231 and a fifth taking clamp 5232. The fifth taking clamp 5232 is arranged on the fifth taking driving device 5231. The fifth taking driving device 5231 can drive the fifth taking clamp 5232 to move between the fixed block feeding groove 522 and the fifth positioning seat 532.

[0171] The fixed block vibrating disc 521 can store a plurality of fixed blocks and enable the fixed blocks to be sequentially fed to the fixed block feeding groove 522. Those skilled in the art of vibrating disc can design the fixed block vibrating disc 521 meeting the requirements according to the shape of the fixed block and the feeding state. The fifth feeding driving device 5231 drives the fifth feeding clamp 5232 to clamp the fixed block from the fixed block feeding groove 522, and then drives the fifth feeding clamp 5232 to sleeve the fixed block outside the middle pipe, so as to realize automatic feeding of the fixed block. Specifically, the fixed block vibrating disc 521 is arranged at the rear side of the fifth positioning seat 532. The fifth feeding driving device 5231 includes a fifth feeding front-rear driving device 52311, a fifth feeding left-right driving device 52312, and a fifth feeding up-down driving device 52313. The fifth feeding front-rear driving device 52311 is connected to the fifth rack 51. The fifth feeding left-right driving device 52312 is connected to the fifth feeding front-rear driving device 52311. The fifth feeding up-down driving device 52313 is connected to the fifth feeding left-right driving device 52312. The fifth feeding clamp 5232 is connected to the fifth feeding up-down driving device 52313. The fifth feeding front-rear driving device 52311 and the fifth feeding left-right driving device 52312 can drive the fifth feeding clamp 5232 to move in the front-rear and left-right directions. The fifth feeding up-down driving device 52313 can drive the fifth feeding clamp 5232 to move up and down to take out the fixed block from the fixed block feeding groove 522 and sleeve the fixed block into the middle pipe. The fifth feeding front-rear driving device 52311, the fifth feeding left-right driving device 52312, and the fifth feeding up-down driving device 52313 can adopt cylinders, screw motion modules, or gear and rack motion modules, etc.

[0172] Further, the fifth welding assembly 54 includes a fifth welding up-down driving device 531, a fifth welding transverse driving device 532, a fifth welding head rotating driving device 533, and a fifth laser welding head 534. The fifth laser welding head 534 is connected to the fifth welding up-down driving device 531, the fifth welding transverse driving device 532, and the fifth welding head rotating driving device 533. The fifth welding up-down driving device 531 can drive the fifth laser welding head 534 to move in the up-down direction. The fifth welding transverse driving device 532 can drive the fifth laser welding head 534 to move laterally towards or away from the middle pipe positioning clamp 341. The fifth welding head rotating driving device 533 can drive the fifth laser welding head 534 to rotate laterally.

[0173] The fifth welding up-down driving device 531, the fifth welding transverse driving device 532 and the fifth welding head rotating driving device 533 can drive the fifth laser welding head 534 to move to different positions, so that the fixed block and the tank body can be placed in the space of the fifth positioning seat 532, and the welding position can be adjusted. Specifically, the fifth welding transverse driving device 532 includes a fifth welding left-right driving device 5321 and a fifth welding front-rear driving device 5322, the fifth welding front-rear driving device 5322 is connected to the fifth rack 51, the fifth welding left-right driving device 5321 is connected to the fifth welding front-rear driving device 5322, the fifth welding up-down driving device 531 is connected to the fifth welding left-right driving device 5321, the fifth welding head rotating driving device 533 is connected to the fifth welding up-down driving device 531, and the fifth laser welding head 534 is connected to the fifth welding head rotating driving device 533. The fifth welding left-right driving device 5321, the fifth welding front-rear driving device 5322 and the fifth welding up-down driving device 531 can adopt a screw motion module or a gear and rack motion module.

[0174] In some specific embodiments, the first tank body feeding and discharging device 15 and the second tank body feeding and discharging device 26 are provided with a first transfer conveying assembly 61, the second tank body feeding and discharging device 26 and the third tank body feeding and discharging device 37 are provided with a second transfer conveying assembly 62, the third tank body feeding and discharging device 37 and the fourth tank body feeding and discharging device 48 are provided with a third transfer conveying assembly 63, and the fourth tank body feeding and discharging device 48 and the fifth tank body feeding and discharging device 54 are provided with a fourth transfer conveying assembly 64.

[0175] The first transfer conveying assembly 61 is provided with a first transfer fixing jig 611 for fixing the tank body with the temperature sensing tube welded, and the first transfer conveying assembly 61 can drive the first transfer fixing jig 611 to move between the first tank body feeding and discharging device 15 and the second tank body feeding and discharging device 26. The second transfer conveying assembly 62 is provided with a second transfer fixing jig for fixing the tank body with the side flow tube welded, and the second transfer conveying assembly 62 can drive the second transfer fixing jig to move between the second tank body feeding and discharging device 26 and the third tank body feeding and discharging device 37. The third transfer conveying assembly 63 is provided with a third transfer fixing jig for fixing the tank body with the middle tube welded, and the third transfer conveying assembly 63 can drive the third transfer fixing jig to move between the third tank body feeding and discharging device 37 and the fourth tank body feeding and discharging device 48. The fourth transfer conveying assembly 64 is provided with a fourth transfer fixing jig for fixing the tank body with the bent tube welded, and the fourth transfer conveying assembly 64 can drive the fourth transfer fixing jig to move between the fourth tank body feeding and discharging device 48 and the fifth tank body feeding and discharging device 54.

[0176] Specifically, the first tank body feeding and discharging device 15, the second tank body feeding and discharging device 26, the third tank body feeding and discharging device 37, the fourth tank body feeding and discharging device 48 and the fifth tank body feeding and discharging device 54 can adopt a six-axis manipulator or a multi-axis motion platform, etc. The first transfer conveying assembly 61, the second transfer conveying assembly 62, the third transfer conveying assembly 63, the fourth transfer conveying assembly 64 and the fifth transfer conveying assembly can adopt a conveying module of a synchronous belt or a gear and rack, etc., and can be respectively provided with front and rear two groups to improve the conveying efficiency of the tank body, which will be described below with reference to Figure 59 .

[0177] The first tank body feeding and discharging device 15, the second tank body feeding and discharging device 26, the third tank body feeding and discharging device 37, the fourth tank body feeding and discharging device 48 and the fifth tank body feeding and discharging device 54 are respectively provided with clamps corresponding to the feeding and discharging posture of the tank body, and correspondingly, the first transfer fixing jig 611, the second transfer fixing jig, the third transfer fixing jig and the fourth transfer fixing jig are also set according to the posture of the tank body.

[0178] For example, the first tank body feeding and discharging device 15 is provided with a first tank body feeding and discharging clamp 151, which will be described below with reference to Figure 58 . The first tank body feeding and discharging clamp 151 is a jaw cylinder, and a plurality of jaws clamps the outer side wall of the tank body close to the end plate on the positive side. The second tank body feeding and discharging device 26 is provided with a second tank body feeding and discharging clamp which can be similar to the first tank body feeding and discharging clamp 151. Correspondingly, the tank body on the first transfer fixing jig 611 has the end plate on the top and the open mouth downward, and the first transfer fixing jig 611 is a jaw cylinder which, when positioning the tank body, clamps the inner side wall of the tank body outward in the inside of the tank body, which will be described below with reference to Figure 60 . The third tank body feeding and discharging device 37 is provided with a third tank body feeding and discharging clamp. Since the middle pipe welding equipment 3 needs to weld the middle pipe, the third tank body feeding and discharging clamp clamps the outer side wall of the tank body from the side. Correspondingly, in order to facilitate the feeding of the tank body on the pipe bending welding equipment 4, the posture of the tank body in the third transfer fixing jig is that the end plate is on the bottom and the open mouth is upward. The fourth tank body feeding and discharging device 48 is provided with a fourth tank body feeding and discharging clamp which is similar in structure to the third tank body feeding and discharging clamp. In order to facilitate the feeding of the tank body on the fixed block welding equipment 5, the posture of the tank body in the fourth transfer fixing jig is that the end plate is on the top and the open mouth is downward. The fifth tank body feeding and discharging device 54 is provided with a fifth tank body feeding and discharging clamp which clamps the middle pipe on the tank body.

[0179] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection range of the present application.

Claims

1. A water purifier automatic welding production line, characterized in that, The temperature sensing tube welding device (1), the side flow tube welding device (2), the middle tube welding device (3), the elbow tube welding device (4) and the fixing block welding device (5) are arranged in sequence. The temperature sensing tube welding device (1) is used for welding a tank body and a temperature sensing tube, and comprises a temperature sensing tube feeding assembly (12), a first tank body feeding and discharging device (15), a temperature sensing tube positioning mechanism (13) and a first positioning and welding assembly (14). The first positioning and welding assembly (14) comprises a first support bracket (141), a first welding mechanism (142) and a first support (143). The first welding mechanism (142) and the first support (143) are both mounted on the first support bracket (141). The first support (143) is used for supporting the tank body. The first tank body feeding and discharging device (15) is used for feeding the tank body onto the first support (143) and taking the tank body with the welded temperature sensing tube off the first support (143). The temperature sensing tube feeding assembly (12) is used for feeding the temperature sensing tube to the temperature sensing tube positioning mechanism (13). The temperature sensing tube positioning mechanism (13) is used for inserting the temperature sensing tube into a first side hole of the tank body. The first welding mechanism (142) is used for welding the tank body and the temperature sensing tube on the first support (143). The side flow tube welding device (2) is used for welding a tank body and a side flow tube, and comprises a side flow tube feeding assembly (25), a second tank body feeding and discharging device (26), a side flow tube welding seat (21) and a second welding assembly (23). The second tank body feeding and discharging device (26) is arranged in matching with the first tank body feeding and discharging device (15). The second tank body feeding and discharging device (26) is used for feeding the tank body with the welded temperature sensing tube to the side flow tube welding seat (21) and taking the tank body after welding the side flow tube off the side flow tube welding seat (21). The side flow tube feeding assembly (25) is used for feeding the side flow tube to the side flow tube welding seat (21) and inserting the side flow tube into a second side hole of the tank body. The second welding assembly (23) is used for welding the side flow tube and the tank body positioned on the side flow tube welding seat (21). The middle tube welding device (3) is used for welding a can body and a middle tube, and comprises a middle tube feeding assembly (32), a third can body feeding and discharging device (37), a middle tube positioning assembly (34) and a third welding assembly (35). The middle tube feeding assembly (32) is used for feeding the middle tube to the middle tube positioning assembly (34). The third can body feeding and discharging device (37) is arranged in matching with the second can body feeding and discharging device (26). The third can body feeding and discharging device (37) is used for feeding the can body with the welded side flow tube to the middle tube positioning assembly (34) and sleeving the middle through hole of the can body on the middle tube, and is used for taking the can body after welding of the middle tube from the middle tube positioning assembly (34). The third welding assembly (35) is used for welding the middle tube and the can body positioned on the middle tube positioning assembly (34); The bent tube welding device (4) is used for welding a can body and a bent tube, and comprises a bent tube feeding assembly (42), a fourth can body feeding and discharging device (48), a bent tube positioning assembly (44), a fourth can body positioning assembly (45) and a fourth welding assembly (46). The bent tube feeding assembly (42) is used for feeding the bent tube to the bent tube positioning assembly (44). The fourth can body feeding and discharging device (48) is arranged in matching with the third can body feeding and discharging device (37). The fourth can body feeding and discharging device (48) is used for feeding the can body with the welded middle tube to the fourth can body positioning assembly (45) and sleeving the perforation of the can body on one of the bent segments of the bent tube, and is used for taking the can body after welding of the bent tube from the fourth can body positioning assembly (45). The fourth welding assembly (46) is used for welding the bent tube positioned on the bent tube positioning assembly (44) and the can body positioned on the fourth can body positioning assembly (45). The fixed block welding device (5) is used for welding a can body and a fixed block, and comprises a fixed block feeding assembly (52), a fifth can body feeding and discharging device, a fifth can body positioning assembly (53) and a fifth welding assembly (54). The fifth can body feeding and discharging device is arranged in matching with the fourth can body feeding and discharging device (48). The fifth can body feeding and discharging device is used for feeding the can body with the welded bent tube to the fifth can body positioning assembly (53) and taking the can body after welding of the fixed block from the fifth can body positioning assembly (53). The fixed block feeding assembly (52) is used for feeding the fixed block to the fifth can body positioning assembly (53) and sleeving the fixed block on the middle tube. The fifth welding assembly (54) is used for welding the can body and the fixed block positioned on the fifth can body positioning assembly (53). The side flow pipe welding seat (21) is provided with a side flow pipe feeding hole (211) capable of accommodating the vertical passing of the side flow pipe, an axis of the side flow pipe feeding hole (211) extends transversely, the side flow pipe welding seat (21) is provided with a side flow pipe upper top hole (212) capable of accommodating the vertical passing of the side flow pipe, an axis of the side flow pipe upper top hole (212) extends vertically, the side flow pipe feeding hole (211) is communicated with the side flow pipe upper top hole (212), an upper end of the side flow pipe upper top hole (212) penetrates the upper side of the side flow pipe welding seat (21), the upper side of the side flow pipe welding seat (21) is provided with a tank body positioning portion (213), the tank body positioning portion (213) is used for positioning the tank body in an attitude of the axis extending transversely, the tank body positioning portion (213) is matched with the side flow pipe upper top hole (212), so that the second side hole of the tank body is opposite to the side flow pipe upper top hole (212); The side flow pipe feeding assembly (25) comprises a side flow pipe feeding groove (251) and an upper top assembly, the side flow pipe feeding groove (251) is arranged transversely, the side flow pipe feeding groove (251) is opposite to the side flow pipe feeding hole (211), a lower side of the side flow pipe feeding groove (251) is connected with a side flow pipe straight vibrator (252), the side flow pipe feeding groove (251) can sequentially arrange the side flow pipes in the vertical attitude and convey to the side flow pipe feeding hole (211), the upper top assembly comprises an upper top driving device (221) and an upper top column (222), the upper top column (222) is arranged in the side flow pipe upper top hole (212), the upper top driving device (221) is in transmission connection with the upper top column (222), the upper top driving device (221) can drive the top of the upper top column (222) to move between the upper side and the lower side of the side flow pipe feeding hole (211); The first positioning and welding assembly (14) further comprises a first pressing mechanism (145), the first pressing mechanism (145) comprises a first pressing cylinder (1451), a first pressing block (1452) and a temperature sensing tube positioning limiting block (1453), the first pressing cylinder (1451) is installed on the first support bracket (141), the first pressing block (1452) is installed on an output end of the first pressing cylinder (1451) and is located directly above the first supporting piece (143), the temperature sensing tube positioning limiting block (1453) is installed on the first pressing block (1452) and is provided with a first through hole (14531) for the temperature sensing tube to pass through; The first pressing mechanism (145) further comprises a temperature sensing tube limiting cylinder (1455) and a first telescopic block (1456), the temperature sensing tube limiting cylinder (1455) is installed on the first pressing block (1452), and the first telescopic block (1456) is installed on an output end of the temperature sensing tube limiting cylinder (1455), the first telescopic block (1456) is provided with a first temperature sensing tube passing hole (14561) for the temperature sensing tube to pass through.

2. The water purifier automatic welding line of claim 1, wherein The temperature sensing tube feeding assembly (12) comprises a temperature sensing tube vibrating disc (121), a first feeding transfer mechanism (122) and a first feeding clamping mechanism (123), the first feeding transfer mechanism (122) is located between the temperature sensing tube vibrating disc (121) and the first feeding clamping mechanism (123); The first feeding transfer mechanism (122) comprises a first feeding sliding table air cylinder (1222) and a first feeding positioning block (1223), the first feeding positioning block (1223) is installed on the sliding seat of the first feeding sliding table air cylinder (1222) and is used for placing the vertical temperature sensing tube, and the temperature sensing tube vibrating disc (121) is used for vertically feeding the temperature sensing tubes to the first feeding positioning block (1223) in sequence; The first feeding clamping mechanism (123) is used for clamping the temperature sensing tube on the first feeding positioning block (1223) and feeding it to the temperature sensing tube positioning mechanism (13), the first feeding clamping mechanism (123) comprises a first feeding support frame (1231), a first feeding rotating air cylinder (1232), a first feeding support (1233), a first clamping lifting air cylinder (1234) and a first feeding clamp (1235), the first feeding support frame (1231) is located on one side of the temperature sensing tube positioning mechanism (13), the first feeding rotating air cylinder (1232) is installed on the first feeding support frame (1231), the first feeding support (1233) is installed on the rotating output end of the first feeding rotating air cylinder (1232), the first clamping lifting air cylinder (1234) is installed on the first feeding support (1233), and the first feeding clamp (1235) is installed on the output end of the first clamping lifting air cylinder (1234), the first feeding rotating air cylinder (1232) drives the first feeding clamp (1235) to move between the first feeding positioning block (1223) and the temperature sensing tube positioning mechanism (13).

3. The water purifier automatic welding line of claim 2, wherein The first support (143) is used for supporting the tank body with the posture of the axis transversely arranged, the temperature sensing tube positioning mechanism (13) comprises a first positioning pushing air cylinder (132) and a temperature sensing tube positioning assembly, the temperature sensing tube positioning assembly is connected with the output end of the first positioning pushing air cylinder (132) and is used for inserting the vertical temperature sensing tube into the first side hole of the tank body; The temperature sensing tube positioning assembly comprises a first cylinder fixing base (1331), a temperature sensing tube positioning cylinder (1332) and a temperature sensing tube positioning jig (1333), the first cylinder fixing base (1331) is connected with the output end of the first positioning pushing cylinder (132), the temperature sensing tube positioning cylinder (1332) is installed on the first cylinder fixing base (1331) and the output end faces upward, the temperature sensing tube positioning jig (1333) is connected with the output end of the temperature sensing tube positioning cylinder (1332), the temperature sensing tube positioning jig (1333) is used for receiving and positioning the temperature sensing tube of the first feeding clamp (1235), the first positioning pushing cylinder (132) can drive the temperature sensing tube positioning cylinder (1332) and the temperature sensing tube positioning jig (1333) to enter the inside of the tank body from the opening of the tank body, and the temperature sensing tube positioning cylinder (1332) can drive the temperature sensing tube in the temperature sensing tube positioning jig (1333) to be inserted upward into the first side hole of the tank body. The temperature sensing tube positioning assembly further comprises a temperature sensing tube positioning clamp (1335) for positioning and fixing the temperature sensing tube, and the temperature sensing tube positioning clamp (1335) is installed on the first cylinder fixing base (1331).

4. The water purifier automatic welding line of claim 1, wherein The lateral flow tube welding device (2) further comprises a second pressing assembly (24), the second pressing assembly (24) comprises a second pressing block (241) and a second pressing up-down driving device (242), the second pressing up-down driving device (242) can drive the second pressing block (241) to move up and down, and the second pressing block (241) is used for pressing the tank body. The second pressing assembly (24) further comprises a second pressing lateral driving device (243), the second pressing lateral driving device (243) can drive the second pressing block (241) to move laterally in the direction of entering or exiting the opening of the tank body, the second pressing block (241) is used for pressing the side wall of the lower side of the tank body, the lower side of the second pressing block (241) is provided with a second pressing welding through hole (2411) and a second feeding pressing blocking part (2412), the second pressing welding through hole (2411) and the second feeding pressing blocking part (2412) are arranged along the lateral movement direction of the second pressing block (241), the second feeding pressing blocking part (2412) is used for facing the second side hole when the lateral flow tube enters the second side hole, and the second pressing welding through hole (2411) is used for facing the second side hole when welding.

5. The water filter automatic welding line of claim 1, wherein The upward stroke of the upper jacking column (222) further comprises a position protruding from the lateral flow tube upper jacking hole (212), and the upper jacking driving device (221) can drive the top of the upper jacking column (222) to protrude upward from the lateral flow tube upper jacking hole (212).

6. The water filter automatic welding line of claim 1, wherein The middle tube loading assembly (32) comprises a middle tube loading clamp jaw (321) and a middle tube loading assembly (33), the middle tube loading clamp jaw (321) is used for positioning the loaded middle tube, and the middle tube loading assembly (33) comprises a middle tube loading clamp (331) and a middle tube loading moving device (332), the middle tube loading clamp (331) is arranged on the middle tube loading moving device (332); The middle tube positioning assembly (34) comprises a middle tube positioning clamp (341), the middle tube positioning clamp (341) is used for positioning the middle tube placed vertically from a bottom positioning posture, the middle tube loading clamp (331) is located above the middle tube loading clamp jaw (321) and the middle tube positioning clamp (341), the middle tube loading moving device (332) can drive the middle tube loading clamp (331) to move between the middle tube loading clamp jaw (321) and the middle tube positioning clamp (341), the middle tube loading clamp (331) is used for moving the middle tube positioned on the middle tube loading clamp jaw (321) to the middle tube positioning clamp (341), and a top end of the middle tube positioning clamp (341) is provided with a third tank body supporting surface (342), and the third tank body supporting surface (342) is used for supporting an end plate of the tank body in an open downward posture.

7. The water purifier automatic welding line of claim 6, wherein The middle tube positioning assembly (34) is arranged on the opposite front side of the middle tube loading assembly (32), the middle tube loading assembly (32) further comprises a middle tube loading groove (322) extending in the front-rear direction, and the middle tube loading assembly (32) further comprises a middle tube vibration disc (323) capable of sequentially conveying the middle tube in the posture of extending in the front-rear direction to the middle tube loading groove (322); The middle tube loading assembly (32) further comprises a third rotary loading device (324), the third rotary loading device (324) is arranged on the front side of the middle tube loading groove (322), the third rotary loading device (324) comprises a third rotary loading driving device (3241) and a middle tube loading clamp jaw (321), the middle tube loading clamp jaw (321) is arranged on the third rotary loading driving device (3241), the third rotary loading driving device (3241) can drive the middle tube loading clamp jaw (321) to rotate up and down between the front side of the middle tube loading groove (322) and the lower side of the middle tube loading clamp (331), when the middle tube loading clamp jaw (321) rotates downward, it can be moved to the front side of the middle tube loading groove (322) to clamp the middle tube, and when the middle tube loading clamp jaw (321) rotates upward, the middle tube can be in a vertical posture; The middle tube loading moving device (332) comprises a middle tube loading front-rear driving device (3321) and a middle tube loading up-down driving device (3322), the middle tube loading front-rear driving device (3321) can drive the middle tube loading clamp (331) to move in the front-rear direction, and the middle tube loading up-down driving device (3322) can drive the middle tube loading clamp (331) to move in the up-down direction.

8. The water purifier automatic welding line of claim 6, wherein The middle tube welding device (3) further comprises a third tank body pressing-down assembly (36) arranged beside the middle tube positioning assembly (34), the third tank body pressing-down assembly (36) comprises a third tank body pressing-down up-down driving device (361), a third tank body pressing-down transverse driving device (362) and a third tank body pressing-down block (363), the third tank body pressing-down block (363) is connected to the third tank body pressing-down up-down driving device (361) and the third tank body pressing-down transverse driving device (362), the third tank body pressing-down up-down driving device (361) can drive the third tank body pressing-down block (363) to move up and down, the third tank body pressing-down transverse driving device (362) can drive the third tank body pressing-down block (363) to move transversely towards or away from the middle tube positioning clamp (341), and the third tank body pressing-down block (363) is used for pressing the tank body downwards on the third tank body supporting surface (342).

9. The water purifier automatic welding line of claim 6, wherein The middle tube positioning assembly (34) further comprises a middle tube welding rotary driving device (343), the middle tube positioning clamp (341) is arranged on the middle tube welding rotary driving device (343), and the middle tube welding rotary driving device (343) can drive the middle tube positioning clamp (341) to rotate along the axis of the middle tube; The middle tube positioning assembly (34) further comprises a third positioning seat (344), the third positioning seat (344) is arranged on the middle tube welding rotary driving device (343), a third middle tube positioning rod (345) extending in the up-down direction is fixedly connected to the third positioning seat (344), an upper end of the third middle tube positioning rod (345) is provided with a third clamping hole (3451) for accommodating the middle tube, and an upper side of the third middle tube positioning rod (345) is provided with a plurality of third middle tube clamping petals (3452) arranged around the third clamping hole (3451), the middle tube positioning clamp (341) comprises the third middle tube clamping petals (3452), and an upper end face of the third middle tube clamping petals (3452) is the third tank body supporting surface (342); The middle tube positioning assembly (34) further comprises a third movable sleeve (346) and a third middle tube clamping driving device (347), the third middle tube clamping driving device (347) is connected to the third positioning seat (344), the third movable sleeve (346) is arranged on the third middle tube clamping driving device (347), the third movable sleeve (346) can slide up and down relative to the third positioning seat (344), the third movable sleeve (346) is arranged on the outer periphery of the third middle tube positioning rod (345), an outer side of the third middle tube clamping petals (3452) is provided with a third guide surface (34521) inclined outward from bottom to top, an inner hole of the third movable sleeve (346) abuts against the third guide surface (34521), and the third middle tube clamping driving device (347) can drive the third movable sleeve (346) to move up and down so as to open or compress the third middle tube clamping petals (3452).

10. The water filter automatic welding line of claim 1, wherein, The elbow pipe feeding assembly (42) comprises an elbow pipe feeding clamp jaw (421) and an elbow pipe taking assembly (43), the elbow pipe feeding clamp jaw (421) is used for positioning the feeding elbow pipe, and the elbow pipe taking assembly (43) comprises an elbow pipe taking clamp jaw (431) and an elbow pipe taking moving device (432), the elbow pipe taking clamp jaw (431) is arranged on the elbow pipe taking moving device (432); The elbow pipe positioning assembly (44) comprises an elbow pipe positioning clamp jaw (441), the elbow pipe positioning clamp jaw (441) is used for positioning the elbow pipe and forming a posture of straight section downward and elbow section upward, the elbow pipe taking clamp jaw (431) is located above the elbow pipe feeding clamp jaw (421) and the elbow pipe positioning clamp jaw (441), the elbow pipe taking moving device (432) can drive the elbow pipe taking clamp jaw (431) to move between the elbow pipe feeding clamp jaw (421) and the elbow pipe positioning clamp jaw (441), and the elbow pipe taking clamp jaw (431) is used for moving the elbow pipe positioned on the elbow pipe feeding clamp jaw (421) to the elbow pipe positioning clamp jaw (441); The fourth tank body positioning assembly (45) comprises a fourth tank body positioning clamp (451), the fourth tank body positioning clamp (451) is arranged on the side of the elbow pipe positioning clamp jaw (441), and the fourth tank body positioning clamp (451) is used for positioning the tank body and forming a posture of end plate downward and open mouth upward.

11. The water purifier automatic welding line of claim 10, wherein The elbow pipe positioning assembly (44) is arranged on the opposite front side of the elbow pipe feeding assembly (42), the elbow pipe feeding assembly (42) comprises an elbow pipe feeding groove (422) extending in the front-rear direction, the elbow pipe feeding assembly (42) further comprises an elbow pipe vibrating disc (423) capable of sequentially conveying the elbow pipe with the straight section downward and the elbow section upward to the elbow pipe feeding groove (422), and the elbow pipe feeding clamp jaw (421) is arranged on the front side of the elbow pipe feeding groove (422); The elbow pipe feeding assembly (42) further comprises an elbow pipe feeding front-rear driving device (424), the elbow pipe feeding clamp jaw (421) is arranged on the elbow pipe feeding front-rear driving device (424), and the elbow pipe feeding front-rear driving device (424) can drive the elbow pipe feeding clamp jaw (421) to move in the front-rear direction; The left side of the elbow pipe feeding groove (422) is provided with a left first insertion groove (4221) penetrating in the left-right direction, the right side of the elbow pipe feeding groove (422) is provided with a right first insertion groove (4222) penetrating in the left-right direction, and the front sides of the left first insertion groove (4221) and the right first insertion groove (4222) are open; The left side of the elbow pipe feeding groove (422) is provided with a left first insertion groove (4221) penetrating in the left-right direction, the right side of the elbow pipe feeding groove (422) is provided with a right first insertion groove (4222) penetrating in the left-right direction, and the front sides of the left first insertion groove (4221) and the right first insertion groove (4222) are open; The elbow pipe feeding clamp jaw (421) comprises an elbow pipe left feeding clamp block (4211), an elbow pipe right feeding clamp block (4212) and an elbow pipe feeding clamping driving device (4213). The elbow pipe feeding clamping driving device (4213) is arranged on the elbow pipe feeding front and rear driving device (424). The elbow pipe left feeding clamp block (4211) and the elbow pipe right feeding clamp block (4212) are arranged on the left side and the right side of the elbow pipe feeding groove (422) respectively. The elbow pipe feeding clamping driving device (4213) can drive the elbow pipe left feeding clamp block (4211) and the elbow pipe right feeding clamp block (4212) to move close to or away from each other. The elbow pipe left feeding clamp block (4211) can pass through the left first insertion groove (4221). The elbow pipe right feeding clamp block (4212) can pass through the right first insertion groove (4222). The right side of the elbow pipe left feeding clamp block (4211) and the left side of the elbow pipe right feeding clamp block (4212) are both provided with an elbow pipe feeding positioning groove (4214) capable of clamping the elbow of the elbow pipe. The elbow pipe feeding clamp jaw (421) comprises an elbow pipe left feeding clamp block (4211), an elbow pipe right feeding clamp block (4212) and an elbow pipe feeding clamping driving device (4213). The elbow pipe feeding clamping driving device (4213) is arranged on the elbow pipe feeding front and rear driving device (424). The elbow pipe left feeding clamp block (4211) and the elbow pipe right feeding clamp block (4212) are arranged on the left side and the right side of the elbow pipe feeding groove (422) respectively. The elbow pipe feeding clamping driving device (4213) can drive the elbow pipe left feeding clamp block (4211) and the elbow pipe right feeding clamp block (4212) to move close to or away from each other. The elbow pipe left feeding clamp block (4211) can pass through the left first insertion groove (4221). The elbow pipe right feeding clamp block (4212) can pass through the right first insertion groove (4222). The right side of the elbow pipe left feeding clamp block (4211) and the left side of the elbow pipe right feeding clamp block (4212) are both provided with an elbow pipe feeding positioning groove (4214) capable of clamping the elbow of the elbow pipe. The elbow pipe feeding clamp jaw (421) comprises an elbow pipe left feeding clamp block (4211), an elbow pipe right feeding clamp block (4212) and an elbow pipe feeding clamping driving device (4213). The elbow pipe feeding clamping driving device (4213) is arranged on the elbow pipe feeding front and rear driving device (424). The elbow pipe left feeding clamp block (4211) and the elbow pipe right feeding clamp block (4212) are arranged on the left side and the right side of the elbow pipe feeding groove (422) respectively. The elbow pipe feeding clamping driving device (4213) can drive the elbow pipe left feeding clamp block (4211) and the elbow pipe right feeding clamp block (4212) to move close to or away from each other. The elbow pipe left feeding clamp block (4211) can pass through the left first insertion groove (4221). The elbow pipe right feeding clamp block (4212) can pass through the right first insertion groove (4222). The right side of the elbow pipe left feeding clamp block (4211) and the left side of the elbow pipe right feeding clamp block (4212) are both provided with an elbow pipe feeding positioning groove (4214) capable of clamping the elbow of the elbow pipe. The right side of the elbow pipe left feeding clamp block (4211) is provided with a left second insertion groove (42111) for inserting the elbow pipe left feeding clamp block (4311). The left side of the elbow pipe right feeding clamp block (4212) is provided with a right second insertion groove (42121) for inserting the elbow pipe right feeding clamp block (4312). The elbow pipe left feeding clamp block (4311) and the elbow pipe right feeding clamp block (4312) can clamp the straight section of the elbow pipe. The fourth tank body positioning assembly (45) is arranged on the opposite front side of the elbow pipe positioning assembly (44), the elbow pipe positioning clamping jaw (441) comprises an elbow pipe left positioning clamping block (4411), an elbow pipe right positioning clamping block (4412) and an elbow pipe positioning clamping driving device (4413), the elbow pipe positioning clamping driving device (4413) can drive the elbow pipe left positioning clamping block (4411) and the elbow pipe right positioning clamping block (4412) to move close to or away from each other, the elbow pipe left positioning clamping block (4411) and the elbow pipe right positioning clamping block (4412) are provided with third insertion grooves (4414) for inserting the elbow pipe material taking clamping jaw (431), the right side of the elbow pipe left positioning clamping block (4411) and the left side of the elbow pipe right positioning clamping block (4412) are provided with elbow pipe positioning grooves (4415) capable of clamping the elbow section of the elbow pipe, and the elbow pipe positioning grooves (4415) are arranged close to the fourth tank body positioning clamp (451).

12. The water purifier automatic welding line of claim 10, wherein The fourth tank body positioning assembly (45) further comprises a fourth tank body rotating driving device (452), the fourth tank body positioning clamp (451) is arranged on the fourth tank body rotating driving device (452), and the fourth tank body rotating driving device (452) can drive the fourth tank body positioning clamp (451) to rotate along the axis of the tank body; The fourth tank body positioning assembly (45) further comprises a fourth positioning seat (453), the fourth positioning seat (453) is arranged on the fourth tank body rotating driving device (452), the fourth positioning seat (453) is fixedly connected with a fourth middle pipe positioning rod (454) extending in the up-down direction, the upper end of the fourth middle pipe positioning rod (454) is provided with a fourth clamping hole (4541) for accommodating the middle pipe on the tank body, the upper side of the fourth middle pipe positioning rod (454) is provided with a plurality of fourth middle pipe clamping petals (4542) arranged around the fourth clamping hole (4541), and the fourth tank body positioning clamp (451) comprises the fourth middle pipe clamping petals (4542); The fourth tank body positioning assembly (45) further comprises a fourth movable sleeve (455) and a fourth tank body clamping driving device (456), the fourth tank body clamping driving device (456) is arranged on the fourth positioning seat (453), the fourth movable sleeve (455) is arranged on the fourth tank body clamping driving device (456), the fourth movable sleeve (455) can slide up and down relative to the fourth positioning seat (453), the fourth movable sleeve (455) is arranged on the outer periphery of the fourth middle pipe positioning rod (454), the outer side of the fourth middle pipe clamping petals (4542) is provided with a fourth guide surface (45421) inclined outward from bottom to top, the inner hole of the fourth movable sleeve (455) is in abutment with the fourth guide surface (45421), and the fourth tank body clamping driving device (456) can drive the fourth movable sleeve (455) to move up and down to open or compress the fourth middle pipe clamping petals (4542).

13. The water filter automatic welding line of claim 10, wherein The elbow pipe welding equipment (4) further comprises a fourth pressing assembly (47) arranged beside the elbow pipe positioning assembly (44) and the fourth tank body positioning assembly (45), the fourth pressing assembly (47) comprising a fourth pressing up-down driving device (471), a fourth pressing transverse driving device (472) and a fourth pressing block (473), the fourth pressing block (473) being connected to the fourth pressing up-down driving device (471) and the fourth pressing transverse driving device (472), the fourth pressing up-down driving device (471) being capable of driving the fourth pressing block (473) to move up and down, the fourth pressing transverse driving device (472) being capable of driving the fourth pressing block (473) to move transversely towards or away from the fourth tank body positioning clamp (451), and the fourth pressing block (473) being used for pressing the tank body during welding; A fourth pressing counterbore (4731) and a fourth pressing welding through hole (4732) are arranged on the lower side of the fourth pressing block (473), the fourth pressing counterbore (4731) being used for pressing the elbow pipe and the tank body before welding, and the fourth pressing welding through hole (4732) being used for pressing the tank body during welding and being arranged outside the perforation and the elbow segment.

14. The water filter automatic welding line of claim 1, wherein The fifth tank body positioning assembly (53) comprises a fifth welding rotary driving device (531), a fifth positioning seat (532) and a fifth tank pressing device (533), the fifth positioning seat (532) and the fifth tank pressing device (533) being arranged on the rotary end of the fifth welding rotary driving device (531), and the upper side of the fifth positioning seat (532) being provided with a fifth bearing surface (5321) used for bearing the inner side of the end plate of the tank body in an open-down posture; The fifth tank pressing device (533) comprises a fifth rotary pressing cylinder (5331) and a fifth positioning pressing block (5332), the fifth rotary pressing cylinder (5331) being fixed opposite to the fifth positioning seat (532), and the fifth positioning pressing block (5332) being arranged on the fifth rotary pressing cylinder (5331), the fifth rotary pressing cylinder (5331) being capable of driving the fifth positioning pressing block (5332) to rotate to the upper side of the tank body and press the end plate of the tank body, and the upper side of the fifth positioning pressing block (5332) being provided with a fixed block positioning groove (5333) used for bearing and positioning the fixed block sleeved into the pipe.

15. The water filter automatic welding line of claim 14, wherein, The fixed block feeding assembly (52) comprises a fixed block vibrating disc (521), a fixed block feeding groove (522) and a fixed block taking assembly (523). The fixed block vibrating disc (521) is used for conveying fixed blocks to the fixed block feeding groove (522). The fixed block feeding groove (522) is used for positioning the fixed blocks fed from the fixed block vibrating disc (521). The fixed block taking assembly (523) comprises a fifth taking driving device (5231) and a fifth taking clamp (5232). The fifth taking clamp (5232) is arranged on the fifth taking driving device (5231). The fifth taking driving device (5231) can drive the fifth taking clamp (5232) to move between the fixed block feeding groove (522) and the fifth positioning seat (532).

16. The water filter automatic welding line of claim 1, wherein The first intermediate transfer conveying assembly (61) is arranged between the first tank body feeding and discharging device (15) and the second tank body feeding and discharging device (26). The second intermediate transfer conveying assembly (62) is arranged between the second tank body feeding and discharging device (26) and the third tank body feeding and discharging device (37). The third intermediate transfer conveying assembly (63) is arranged between the third tank body feeding and discharging device (37) and the fourth tank body feeding and discharging device (48). The fourth intermediate transfer conveying assembly (64) is arranged between the fourth tank body feeding and discharging device (48) and the fifth tank body feeding and discharging device. The first intermediate transfer conveying assembly (61) is provided with a first intermediate transfer fixture (611) for fixing the tank body with the temperature sensing tube welded. The first intermediate transfer conveying assembly (61) can drive the first intermediate transfer fixture (611) to move between the first tank body feeding and discharging device (15) and the second tank body feeding and discharging device (26). The second intermediate transfer conveying assembly (62) is provided with a second intermediate transfer fixture for fixing the tank body with the side flow tube welded. The second intermediate transfer conveying assembly (62) can drive the second intermediate transfer fixture to move between the second tank body feeding and discharging device (26) and the third tank body feeding and discharging device (37). The third intermediate transfer conveying assembly (63) is provided with a third intermediate transfer fixture for fixing the tank body with the middle tube welded. The third intermediate transfer conveying assembly (63) can drive the third intermediate transfer fixture to move between the third tank body feeding and discharging device (37) and the fourth tank body feeding and discharging device (48). The fourth intermediate transfer conveying assembly (64) is provided with a fourth intermediate transfer fixture for fixing the tank body with the bent tube welded. The fourth intermediate transfer conveying assembly (64) can drive the fourth intermediate transfer fixture to move between the fourth tank body feeding and discharging device (48) and the fifth tank body feeding and discharging device.

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