Speed chain production line

Abstract

The utility model discloses a speed chain production line which comprises a conveying line assembly, a buffering and blocking assembly, a clamping tool assembly, an eight-station transplanting assembly and a nitrogen filling and water supplementing assembly, the conveying line assembly is used for conveying tool plates, and the buffering and blocking assembly is installed on the conveying line assembly and buffers and blocks the tool plates. The clamping tool assembly is installed on the tool plate and used for clamping and positioning a workpiece, the eight-station transplanting assembly is installed on the conveying line assembly and used for directionally transplanting the tool plate so that the workpiece can be welded, and the nitrogen charging and water supplementing assembly corresponds to the eight-station transplanting assembly and used for charging nitrogen and supplementing water into the clamping tool assembly and the workpiece. Through the structural design, the clamping precision of the four-way valve and the pipe fitting of the four-way valve can be improved, the welding quality and the welding speed between the four-way valve and the pipe fitting are improved, the situation that the welding quality is affected due to the fact that the temperature is too high in the welding process of the four-way valve is avoided, the requirement for flow line production is met, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of speed chain production line, especially relates to a speed chain production line. BACKGROUND

[0002] The production line composed of the speed chain assembly line is usually called: self-flow type conveying system speed chain conveyor, is used for the material conveying in the assembly and processing production line, and its conveying principle is to use the speed increasing function of the speed chain to make the tool plate supporting goods quickly run, to complete the accumulation and placement action, migration, indexing and line changing functions through corresponding instructions, a plurality of workstations are usually arranged on the speed chain production line, different production operations are completed in each workstation, and under the driving conveying of the speed chain transmission system, the work plate moves to the next station for production operation.

[0003] The four-way valve is a control valve with four oil ports. The four-way valve is an indispensable component in the refrigeration equipment, and its working principle is that when the electromagnetic valve coil is in a power-off state, the pilot spool moves left under the driving of the right compression spring, high-pressure gas enters the right end piston cavity after entering the capillary, on the other hand, the gas in the left end piston cavity is discharged, due to the pressure difference between the two ends of the piston, the piston and the main spool move left, the exhaust pipe is communicated with the outdoor unit connecting pipe, the other two connecting pipes are communicated, and the refrigeration cycle is formed.

[0004] The four-way valve needs to be installed with corresponding pipe fittings at the interface of the four-way valve during production, and then welding is carried out. Since the installation positions and bending angles of the four-way valve pipe fittings are different, the efficiency of placing, clamping, rotating and other processes of the four-way valve and the pipe fittings by artificial is low, and after the installation of the four-way valve and the pipe fittings is completed, welding is needed, and the quality and speed of welding also affect the production efficiency, therefore, a speed chain production line is needed to solve the assembly line production demand and improve the four-way valve production efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above technical problems in the prior art, and provides a speed chain production line, which can not only improve the clamping precision of the four-way valve and the pipe fittings, but also improve the welding quality and welding speed between the four-way valve and the pipe fittings, avoids the influence of the welding quality caused by the excessively high temperature in the welding process of the four-way valve, meets the requirements of the assembly line production, and improves the processing efficiency.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A speed chain production line, characterized in that: comprising a conveying line assembly, the conveying line assembly is used for conveying a tool plate; a clamping tool assembly is installed on the tool plate and is used for clamping and positioning a workpiece; an eight-station transplanting assembly is installed on the conveying line assembly, and the eight-station transplanting assembly is used for directional transplanting of the tool plate so as to weld the workpiece in the clamping tool assembly.

[0008] Further, the conveying line assembly comprises a first conveying line and a second conveying line, the first conveying line and the second conveying line are combined to form the production line, the first conveying line and the second conveying line each comprise a power conveying mechanism and a frame body, the power conveying mechanism is installed on the frame body, the power conveying mechanism provides power for conveying the tool plate, the eight-station transplanting assembly is installed on the second conveying line, the first conveying line further comprises a reversing mechanism and a rotating mechanism, the reversing mechanism is used for reversing conveying the tool plate to the second conveying line, and the rotating mechanism is used for rotating the tool plate.

[0009] Further, the power conveying mechanism comprises a driving motor, a driving shaft, a driving gear, a driven gear and a chain, the driving motor is connected with the driving shaft through a shaft coupling, the driving shaft is rotatably installed on the frame body, the driving gear is installed on the driving shaft, the driven gear is rotatably installed on an installation shaft, and the installation shaft is installed on the frame body, and the chain is installed on the driving gear and the driven gear.

[0010] Further, the reversing mechanism and the rotating mechanism each comprise a jacking module, the reversing mechanism comprises a transplanting module, the transplanting module is used for controlling the reversing movement of the tool plate, the rotating mechanism comprises a rotating module, the rotating module is used for rotating the tool plate, and the jacking module is used for pushing the transplanting module or the rotating module to ascend or descend.

[0011] Further, the jacking module comprises a mounting seat one, a jacking seat, a jacking cylinder, a guide seat and a guide rod, the jacking cylinder is installed on the mounting seat one, the jacking cylinder is connected with the jacking seat, the jacking cylinder pushes the jacking seat to ascend or descend, the transplanting module or the rotating mechanism is installed on the jacking seat, the guide seat is fixed on the mounting seat one and penetrates through the mounting seat one, and the guide rod is installed on the jacking seat through the fixing seat one and penetrates through the guide seat and slides along the guide seat.

[0012] Further, the transplanting module comprises a roller and a transplanting motor, the transplanting motor is connected with the roller, the transplanting motor drives the roller to rotate, a plurality of rollers are provided, the plurality of rollers are installed on the jacking seat, the roller is provided with a tooth part, and two adjacent rollers are combined with a belt through the tooth part to realize synchronous rotation.

[0013] Further, the rotating module comprises a rotating motor, a rotating seat, a fixed seat two, and a limiting plate, the fixed seat two is fixed on the jacking seat, the rotating motor is installed on the fixed seat two, the rotating seat is installed in the fixed seat two, the rotating motor is connected with the rotating seat, the rotating motor controls the rotation of the rotating seat, the limiting plate is installed on the rotating seat, the limiting plate rotates synchronously with the rotating seat, the limiting plate is provided with a limiting pillar one, and the limiting plate is used for placing the tool plate and limiting the tool plate through the limiting pillar one.

[0014] Further, the buffer blocking assembly is installed on the conveying line assembly, and the buffer blocking assembly is used for buffering and blocking the tool plate.

[0015] Further, the installation seat two is provided with an installation space, a hinge shaft is installed through the installation space, one end of the blocking piece is rotatably installed on the hinge shaft, a spring is sleeved on the hinge shaft, the other end of the blocking piece is rotatably installed with a roller, the installation seat two is installed with a limiting piece, the blocking piece is provided with a limiting column, and the limiting column abuts against the limiting piece.

[0016] Further, the clamping tool assembly comprises a welding cooling mechanism, a pipe clamping mechanism, and a pipe clamping mechanism, the welding cooling mechanism is used for placing the workpiece and injecting the cooling medium, and the workpiece is cooled and protected when the workpiece is welded, the pipe clamping mechanism is used for clamping and positioning the interface of the workpiece, and the pipe clamping mechanism is used for positioning the pipe of the workpiece, the pipe clamping mechanism is connected with the welding cooling mechanism, and the pipe clamping mechanism is used for clamping the pipe of the workpiece.

[0017] Further, the welding cooling mechanism comprises a water tank, a water tank, a valve, a bottom plate, and a support frame, the water tank is located on the inner side of the water tank, the bottom of the water tank is provided with a first water outlet, the lower part of the water tank is connected with a drainage box, the drainage box is provided with a drainage hole, the drainage hole and the first water outlet are communicated with each other, the valve is arranged in the drainage box, and the valve is used for controlling the on-off of the first water outlet and the drainage hole, the bottom plate is connected to the water tank through the support frame, and the bottom plate is used for supporting the water tank and the water tank.

[0018] Further, the water tank is provided with a water supplement hole and a supporting block, the water supplement hole is used for injecting the cooling medium into the water tank, the supporting block is used for supporting the workpiece and positioning the workpiece, the top of the water tank is provided with a first fixed plate, the first fixed plate is provided with a first arc-shaped clamping groove, and the first arc-shaped clamping groove is used for positioning the interface of the placed workpiece, the water tank is provided with a second water outlet, and the second water outlet is used for draining the water in the water tank.

[0019] Further, the pipe clamping mechanism comprises a push-pull module, a clamping module and a positioning module, the clamping module and the positioning module are connected to the push-pull module, the clamping module and the positioning module are driven by the push-pull module to approach or move away from the workpiece interface placed in the water tank, so as to clamp or loosen the workpiece, facilitating disassembly and assembly of the workpiece.

[0020] Further, the push-pull module comprises a mounting plate one, a sliding rail, a sliding block, a support seat, a Z-shaped push-pull rod and an L-shaped rod, the sliding rail and the support seat are connected to the mounting plate one, the L-shaped rod is connected to the sliding block, the sliding block slides along the sliding rail, the sliding block is connected with a push-pull block, one end of the Z-shaped push-pull rod is rotatably connected to the support seat, the other end is provided with a handle, the Z-shaped push-pull rod is rotatably connected with a rotating arm through a rotating shaft, and the other end of the rotating arm is rotatably connected to the push-pull block.

[0021] Further, the clamping module comprises a first adapter block and a horizontal plate, the horizontal plate is fixedly connected to the L-shaped rod through the first adapter block, one end of the horizontal plate close to the water tank is integrally formed with a clamping portion, and the clamping portion is provided with a second arc-shaped clamping groove, which is used for clamping or loosening the workpiece interface placed in the water tank.

[0022] Further, the positioning module comprises a second adapter block, an adapter block, a stand, a supporting plate and a positioning sleeve, the adapter block is connected to the first adapter block through the second adapter block, the supporting plate is connected to the adapter block through the stand, and the positioning sleeve is arranged on the supporting plate.

[0023] Further, the pipe clamping mechanism comprises a second fixing plate, a balancing plate and at least one clamping unit, the second fixing plate is provided with a locking piece and a positioning pin, the balancing plate is provided with a positioning hole and a through hole, the positioning pin is limited in the positioning hole, the locking piece passes through the through hole, and the fixing connection between the balancing plate and the second fixing plate is realized by rotating the locking piece, and the clamping unit is detachably connected to the balancing plate.

[0024] Further, the clamping unit comprises a vertical rod, a clamping block, a rotating piece, a suspension rod and a clamping block, the rotating piece is connected to the vertical rod through the clamping block, the suspension rod is detachably connected to the rotating piece, the clamping block is located at the end of the suspension rod, and is used for clamping the pipe of the workpiece, the balancing plate is provided with at least one mounting hole one, and the vertical rod is connected to the mounting hole one.

[0025] Further, the eight-station transplanting assembly comprises a conveying chassis, a first conveying mechanism, a second conveying mechanism and a positioning plate, the first conveying mechanism is installed on the conveying chassis, the first conveying mechanism is connected with the second conveying mechanism, the first conveying mechanism and the second conveying mechanism drive the tool plate to move directionally to the positioning plate, and the positioning plate is used for positioning the tool plate.

[0026] Further, the first conveying mechanism comprises a linear guide rail, a guide rail slider, a jacking bottom plate and an electric cylinder, the linear guide rail is arranged on a conveying chassis, the guide rail slider is installed on the linear guide rail, the jacking bottom plate is connected with the guide rail slider, the electric cylinder is connected with the jacking bottom plate, the guide rail slider is driven to move along the linear guide rail through the extension and contraction of the electric cylinder, the jacking bottom plate is provided with a connecting piece, and the connecting pieces on the adjacent two jacking bottom plates are connected through a connecting rod; the second conveying mechanism comprises a pushing cylinder and a jacking plate, and the jacking plate is installed on the output end of the pushing cylinder; the jacking plate is jacked through the pushing cylinder, so that the tool plate is lifted.

[0027] Further, the nitrogen charging and water replenishing assembly is used for replenishing water and charging nitrogen into the clamped tool assembly and the workpiece, so that the workpiece is protected during welding.

[0028] Further, the nitrogen charging and water replenishing assembly comprises a nitrogen charging mechanism and a water replenishing mechanism, the nitrogen charging mechanism is used for charging nitrogen into the workpiece, and the water replenishing mechanism is used for charging cooling medium into the clamped tool assembly.

[0029] The utility model discloses have following beneficial effect because of adopting above -mentioned technical scheme:

[0030] 1、The utility model discloses can improve the clamping precision of four-way valve and pipe fitting, improve the welding quality and welding speed between four-way valve and pipe fitting, avoid the influence of welding quality due to excessively high temperature during four-way valve welding process, satisfy the requirement of flow line production, improve processing efficiency.

[0031] 2、The utility model discloses install rotating mechanism and reversing mechanism on the first conveying line, rotate tool plate through rotating mechanism, facilitate worker to install four-way valve pipe fitting, convenient operation, simultaneously, through reversing mechanism, tool plate is conveyed to the second conveying line on the end, through the first conveying line and the second conveying line, form production line, reduce the occupied space of frequency multiplier chain production line.

[0032] 3. The utility model discloses a plurality of buffer blocking assemblies are equipped on the conveying line assembly, can block the tooling plate on one hand, realize the location of tooling plate, and it is convenient for the worker to install four -way valve and its pipe fitting, and the collision between two adjacent tooling plates is also avoided.

[0033] 4. The utility model discloses through eight work position transplanting assembly to the tooling plate that installs four -way valve and its pipe fitting of completed installation directional and fixed -distance movement, makes four -way valve and the connecting place of pipe fitting correspond with welding equipment, guarantees the quality of welding, and in the process of moving, simultaneously, two tooling plates are moved to next welding station, increases welding efficiency, and corresponding nitrogen filling water supply assembly is equipped, fills nitrogen and cooling medium in the process of welding and cools and protects, improves the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0034] The utility model will be further described in connection with the drawings:

[0035] Figure 1 It is the structure schematic diagram of a kind of multiple-speed chain production line of the utility model;

[0036] Figure 2 It is the structure schematic diagram of conveying line assembly in the utility model;

[0037] Figure 3 It is the structure schematic diagram of first conveying line in the utility model;

[0038] Figure 4 It is the structure schematic diagram of the utility model Figure 3 in the local enlarged view of A place;

[0039] Figure 5 It is the structure schematic diagram of reversing mechanism in the utility model;

[0040] Figure 6 It is the structure schematic diagram of reversing mechanism in the utility model;

[0041] Figure 7 It is the structure schematic diagram of rotating mechanism in the utility model;

[0042] Figure 8 It is the structure schematic diagram of rotating mechanism in the utility model;

[0043] Figure 9 It is the structure schematic diagram of buffer blocking assembly in the utility model;

[0044] Figure 10 It is the structure schematic diagram of mounting seat two and blocking piece in the utility model;

[0045] Figure 11 It is the effect picture after clamping tooling assembly clamps four -way valve and four -way valve pipe fitting in the utility model;

[0046] Figure 12 It is structure schematic view of clamping tool assembly in the utility model;

[0047] Figure 13 It is structure schematic view of clamping tool assembly in the utility model from another perspective;

[0048] Figure 14 It is structure schematic view of balance plate and second fixed plate in the utility model;

[0049] Figure 15 It is connection schematic view between welding cooling mechanism and second fixed plate and pipe clamp mechanism in the utility model;

[0050] Figure 16 It is structure schematic view of pipe clamp mechanism in the utility model;

[0051] Figure 17 It is structure schematic view of welding cooling mechanism in the utility model;

[0052] Figure 18 It is effect drawing after removing bottom plate and support frame of welding cooling mechanism in the utility model;

[0053] Figure 19 It is structure schematic view of second conveying line and eight station transplanting assembly in the utility model;

[0054] Figure 20 It is front view of the utility model; Figure 19

[0055] Figure 21 It is structure schematic view of first conveying mechanism in the utility model;

[0056] Figure 22 It is structure schematic view of backflow prevention assembly in the utility model;

[0057] Figure 23 It is structure schematic view of nitrogen filling and water replenishing assembly in the utility model;

[0058] Figure 24 It is structure schematic view of tool plate in the utility model.

[0059] ​In the figure: 10-tool plate; 11-mounting hole two; 12-guide bearing; 13-guide groove; 14-slot; 15-positioning groove; 16-buffer block; 17-buffer one; 18-mounting part; 19-collision part; 110-limiting hole; 111-positioning through hole; 20-first conveying line; 21-frame body; 211-water collecting groove; 212-buffer seat; 213-buffer two; 22-power conveying mechanism; 221-driving motor; 222-driving shaft; 223-driving gear; 224-driven gear; 225-mounting shaft; 23-reversing mechanism; 231-roller; 232-tooth part; 233-belt; 24-rotating mechanism; 241-rotating motor; 242-fixed seat two; 243-limiting plate; 244-limiting support one; 25-jacking module; 251-mounting seat one; 252-jacking seat; 253-jacking cylinder; 254-guide seat; 255-guide rod; 256-fixed seat one; 30-second conveying line; 40-buffer blocking assembly; 41-hydraulic cylinder; 42-mounting seat two; 43-blocking piece; 44-fixed seat three; 441-third fixed plate; 442-fixed hole; 443-mounting bracket; 444-mounting plate two; 445-mounting hole three; 446-sensing piece; 45-mounting space; 46-hinge shaft; 47-roller; 48-limiting piece; 49-limiting column; 50-clamping tool assembly; 51-welding cooling mechanism; 511-bottom plate; 512-support frame; 513-water tank; 514-water tank; 515-valve; 516-water supply hole; 517-supporting block; 518-first water outlet; 519-first fixed plate; 5110-first arc-shaped clamping groove; 5111-second water outlet; 5112-drainage box; 5113-drainage hole; 52-pipe clamping mechanism; 521-pushing and pulling module; 5211-mounting plate one; 5212-slideway; 5213-slideway block; 5214-supporting seat; 5215-Z-shaped pushing and pulling rod; 5216-handle; 5217-rotation shaft; 5218-rotation arm; 5219-pushing and pulling block; 52110-L-shaped rod; 522-clamping module; 5221-first engaging block; 5222-horizontal plate; 5223-clamping part; 5224-second arc-shaped clamping groove; 523-positioning module; 5231-second engaging block; 5232-adapting block; 5233-stand column; 5234-supporting plate; 5235-positioning sleeve; 53-pipe clamping mechanism; 531-second fixed plate; 532-balancing plate; 533-locking piece; 534-mounting hole one; 535-positioning hole; 536-stand column; 537-clamping block; 538-rotation piece; 539-suspension rod; 5310-clamping block; 5311-positioning pin; 60-eight-station transplanting assembly; 61-conveying chassis; 62-first conveying mechanism; 621-linear guide rail; 622-guide rail sliding block; 623-jacking bottom plate; 624-electric cylinder; 625-connecting piece; 626-connecting rod; 63-second conveying mechanism;631 - push cylinder; 632 - jacking plate; 633 - positioning pillar two; 634 - speed regulating valve; 64 - positioning plate; 641 - positioning pillar three; 65 - check valve assembly; 651 - connecting plate two; 652 - connecting block; 653 - elastic member; 654 - check valve; 70 - nitrogen filling and water supplement assembly; 71 - nitrogen filling mechanism; 711 - telescopic cylinder one; 712 - connecting plate one; 713 - nitrogen filling joint; 72 - water supplement mechanism; 721 - telescopic cylinder two; 722 - connecting pipe; 723 - water supplement joint; 724 - water supplement pipe; 73 - mounting plate three; 80 - welding equipment. DETAILED DESCRIPTION

[0060] As shown in Figures 1 to 24 , the utility model relates to a kind of multiple-speed chain production lines, including conveying line assembly, buffer blocking component 40, clamping tool assembly 50, eight-station transplanting component 60 and nitrogen filling and water supplement assembly 70, conveying line assembly is used to convey tool plate 10 to make tool plate 10 move along conveying line assembly, buffer blocking component 40 is equipped with multiple, according to the arrangement of production line station, distribution is set on conveying line assembly, buffer blocking component 40 is used to buffer and block clamping tool assembly 50 installation on tool plate 10, clamping tool assembly 50 is used to clamp and position four-way valve and its pipe fitting, eight-station transplanting component 60 is installed on conveying line assembly, eight-station transplanting component 60 is used to direct transplanting tool plate 10, so as to weld four-way valve and four-way valve pipe fitting in clamping tool assembly 50 nitrogen filling and water supplement assembly 70 correspond to eight-station transplanting component 60, nitrogen filling and water supplement assembly 70 is used to water supplement and nitrogen filling in clamping tool assembly 50 and four-way valve, so as to protect when welding four-way valve.

[0061] The utility model also includes welding equipment 80, the setting of welding equipment 80 corresponds to eight-station transplanting component 60, and four-way valve and its pipe fitting are welded by welding equipment 80, and welding equipment 80 belongs to prior art, so it is not described in the utility model.

[0062] The utility model not only can improve the clamping precision of four-way valve and its pipe fitting, but also can improve the welding quality and welding speed between four-way valve and pipe fitting, simultaneously avoid that the welding quality is influenced due to temperature excessively high in four-way valve welding process, satisfy the requirement of flow line production, improve processing efficiency.

[0063] As shown in Figure 24As shown, in the embodiment, the jig plate 10 is rectangular in shape, 400mm*400mm*15mm in size, made of aluminum material, and reliable in strength. The jig plate 10 can be supported on the conveying line assembly, and under the driving of the conveying line assembly, the jig plate 10 moves along the conveying direction of the conveying line assembly, and the jig plate 10 is provided with a mounting hole two 11 for mounting the clamping jig assembly 50, so as to facilitate the quick positioning of the clamping jig assembly 50 on the jig plate 10, and reduce the installation difficulty, which is simple and convenient.

[0064] The jig plate 10 moves directionally on the conveying line assembly through the guide bearing 12, which can prevent the jig plate 10 from deviating when moving with the conveying line assembly, improve the reliability of conveying, and the conveying line assembly is provided with a guide groove 13 corresponding to the guide bearing 12. During conveying, the guide bearing 12 is in contact with the groove surface of the guide groove 13, and the rolling friction exists between the guide bearing 12 and the guide groove 13, the friction is small, the guide bearing 12 wears slowly, and thus the service life of the guide bearing 12 is prolonged.

[0065] The jig plate 10 is provided with a missing groove 14 for accommodating the guide bearing 12 at the bottom corner of the jig plate 10, which can ensure that the jig plate 10 is in full contact with the chain of the conveying line assembly, so as to ensure smooth conveying, and on the other hand, does not increase the working surface height of the jig plate 10, so as to not need to increase the jacking height of the buffer blocking assembly 40, and thus reduce the use requirement of the buffer blocking assembly 40.

[0066] The jig plate 10 is provided with a positioning structure, which is a positioning groove 15 formed by the inward recess of the side surface of the jig plate 10, the buffer block 16 is arranged in the positioning groove 15, the buffer block 16 corresponds to the buffer blocking assembly 40, when the jig plate 10 reaches the machining position, the buffer blocking assembly 40 is jacked upward and touches the buffer block 16, so as to stop the jig plate 10, facilitate the machining operation of the four-way valve, the buffer block 16 plays a buffering role, reduces the collision of the buffer blocking assembly 40 on the jig plate 10, so as to prevent the four-way valve on the clamping jig assembly 50 from loosening, the structure is simple, the positioning is accurate, the stopping is reliable, the buffer block 16 can be made of rubber material, and the buffering is reliable. The buffer block 16 is fixedly connected with the jig plate 10 through bolts, which is reliable in fixation, convenient in disassembly and assembly, convenient to use, replaceable when damaged, and flexible and convenient.

[0067] The side of the tool plate 10 is provided with a buffer piece one 17, the buffer piece one 17 includes a mounting portion 18 and a collision portion 19, the collision portion 19 can be made of rubber material, the collision portion 19 is fixed on the mounting portion 18 by bolts, and the mounting portion 18 is fixed on the tool plate 10 by bolts. The buffer piece one 17 is simple in structure, resistant to impact, low in use cost, can be disassembled into two parts, facilitates separate replacement of damaged parts, high in practicability, and the collision portion 19 protrudes outward from the side of the tool plate 10. In the conveying process, if the collision portions 19 of two adjacent tool plates 10 collide, the collision of the two adjacent tool plates 10 can be prevented, and the collision and damage of the guide bearings 12 of the two adjacent tool plates 10 can also be prevented.

[0068] As shown in Figures 1 to 2 The conveying line assembly includes a first conveying line 20 and a second conveying line 30, and in the embodiment, two first conveying lines 20 and two second conveying lines 30 are arranged, the first conveying line 20 and the second conveying line 30 are combined to form a production line, and the first conveying line 20 and the second conveying line 30 each include a power conveying mechanism 22 and a frame 21, the power conveying mechanism 22 is installed on the frame 21, and the power conveying mechanism 22 provides power for conveying the tool plate 10; the first conveying line 20 further includes a reversing mechanism 23 and a rotating mechanism 24, the reversing mechanism 23 is used for reversing the tool plate 10 to the second conveying line 30, and the rotating mechanism 24 is used for rotating the tool plate 10.

[0069] As shown in Figures 3 to 8 In the utility model, the first conveying line 20 is provided with the reversing mechanism 23 at the end of the frame 21, the tool plate 10 is conveyed to the reversing mechanism 23 by the power conveying assembly, the advancing direction of the tool plate 10 is changed by the reversing mechanism 23, the rotating mechanism 24 is installed on the frame 21 to rotate the tool plate 10, the advancing direction of the tool plate 10 is changed while ensuring that the tool plate 10 rotates synchronously, and the occupied space of the multiple-speed chain production line is reduced.

[0070] The power conveying mechanism 22 includes a driving motor 221, a driving shaft 222, a driving gear 223, a driven gear 224 and a chain (not shown in the figure), the driving motor 221 is connected with the driving shaft 222 through a shaft coupling, the driving shaft 222 is rotatably installed on the frame 21, the driving gear 223 is installed on the driving shaft 222, the driven gear 224 is rotatably installed on a mounting shaft 225, the mounting shaft 225 is installed on the frame 21, the chain is installed between the driving gear 223 and the driven gear 224, the driving motor 221 drives the driving shaft 222 to rotate, the driving shaft 222 drives the driving gear 223 to rotate, the driving gear 223 and the driven gear 224 are connected through the chain, the driving gear 223 and the driven gear 224 drive the chain to rotate, and the chain is used to move the tool plate 10 on the conveying line.

[0071] In the embodiment, one reversing mechanism 23 is arranged at each end of the first conveying line 20, and a rotating mechanism 24 is arranged in the middle of the two reversing mechanisms 23, the reversing mechanism 23 and the rotating mechanism 24 are both provided with a jacking module 25, and the reversing mechanism 23 further comprises a transplanting module, the reversing movement of the tooling plate 10 is realized through control of the transplanting module, the rotating mechanism 24 further comprises a rotating module, the rotation of the tooling plate 10 is realized through the rotating module, and the jacking module 25 is used for pushing the transplanting module or the rotating mechanism to lift.

[0072] In the embodiment, the tooling plate 10 moves on the conveying line assembly through the power conveying mechanism 22, when the tooling plate 10 completes the machining work at each work station, the tooling plate 10 needs to continue to move after reversing, first, the tooling plate 10 needs to be rotated through the rotating mechanism 24, and then the reversing mechanism 23 is used for reversing the tooling plate 10, in order to make the reversing mechanism 23 and the rotating mechanism 24 not affect the movement of the tooling plate 10 on the frame body 21, the transplanting module and the rotating module are controlled to lift through the jacking module 25, when rotation and reversing are not needed, the transplanting module and the rotating module are controlled to descend by the jacking module 25, so that the movement of the tooling plate 10 is not affected, when rotation or reversing is needed, the transplanting module and the rotating module are pushed to lift by the jacking module 25, so that the rotation or reversing is realized.

[0073] The jacking module 25 comprises a mounting seat one 251, a jacking seat 252, a jacking cylinder 253, a guide seat 254, a guide rod 255 and a fixing seat one 256, the jacking cylinder 253 is installed on the mounting seat one 251, an output end of the jacking cylinder 253 is connected with the jacking seat 252, and the transplanting module or the rotating module is installed on the jacking seat 252; the transplanting module or the rotating module is driven to lift by the jacking cylinder 253, the guide seat 254 penetrates through and is fixed on the mounting seat one 251, the fixing seat one 256 is fixed on the bottom surface of the jacking seat 252, one end of the guide rod 255 is connected with the fixing seat one 256, the other end penetrates through the guide seat 254 and slides up and down along the guide seat 254, and the stability of lifting of the jacking module 25 is improved through the design of the guide rod 255.

[0074] The transplanting module comprises a plurality of rollers 231 and a transplanting motor (not shown in the figure), the transplanting motor is connected with the rollers 231, the transplanting motor drives the rollers 231 to rotate, the rollers 231 are provided in plurality, the plurality of rollers 231 are rotatably installed on the jacking seat 252, the rollers 231 are provided with tooth portions 232, and synchronous rotation is realized through the tooth portions 232 and the belts 233 between two adjacent rollers 231; in the embodiment, the rotating direction of the rollers 231 is the direction in which the power conveying mechanism 22 controls the tooling plate 10 to move in the conveying line assembly, so that the reversing movement of the tooling plate 10 is realized.

[0075] The rotating module comprises a rotary motor 241, a rotary seat (not shown in the figure), a second fixing seat 242 and a limiting plate 243, the second fixing seat 242 is fixed on the jacking seat 252, the rotary motor 241 is installed on the second fixing seat 242, the rotary seat is rotatably installed in the second fixing seat 242 through a ball bearing, the rotary motor 241 is connected with the rotary seat, the limiting plate 243 is installed on the rotary seat, the rotary seat drives the limiting plate 243 to rotate through the rotary motor 241, so that the limiting plate 243 rotates synchronously with the rotary seat, the limiting plate 243 is arranged for placing and limiting the tool plate 10, specifically, a first limiting support 244 is further arranged on the limiting plate 243, a limiting hole 110 corresponding to the first limiting support 244 is arranged on the tool plate 10 for the first limiting support 244 to insert into, when the jacking module 25 controls the rotating module to rise, the first limiting support 244 on the limiting plate 243 is inserted into the limiting hole 110 on the tool plate 10, so that the tool plate 10 is limited on the limiting plate 243, and deviation of the tool plate 10 in the rotating process is avoided.

[0076] As shown in the figure, Figures 9 to 10 In the utility model, the buffer blocking assembly 40 can be arranged according to the distribution of stations, the buffer blocking assembly 40 comprises a hydraulic cylinder 41, a second mounting seat 42, a blocking piece 43 and a third fixing seat 44, the second mounting seat 42 is connected with the hydraulic cylinder 41, the hydraulic cylinder 41 is installed on the third fixing seat 44, the hydraulic cylinder 41 is used for driving the second mounting seat 42 to lift, the blocking piece 43 is rotatably installed on the second mounting seat 42, the blocking piece 43 is used for blocking the tool plate 1014, the blocking piece 43 is installed on the second mounting seat 42, the second mounting seat 42 and the blocking piece 43 are driven to lift by the hydraulic cylinder 41, when the tool plate 10 moves to a station, the second mounting seat 42 and the blocking piece 43 are controlled to rise by the hydraulic cylinder 41, so that the blocking piece 43 blocks the tool plate 10, thereby limiting the tool plate 10, the workpiece on the tool plate 10 is conveniently machined, and after machining, the second mounting seat 42 and the blocking piece 43 are controlled to descend by the hydraulic cylinder 41, so that the tool plate 4 can continue to move to the next station on the production line.

[0077] The mounting seat two 42 is provided with a mounting space 45, a hinge shaft 46 is installed through the mounting space 45, one end of the blocking piece 43 is rotatably installed on the hinge shaft 46 and located in the mounting space 45, the blocking piece 43 rotates along the hinge shaft 46, a spring (not shown in the figure) is sleeved on the hinge shaft 46, the other end of the blocking piece 43 is rotatably installed with a roller 47, the roller 47 abuts against the tool plate 10, a limiting piece 48 is installed on one side of the mounting seat two 42, a limiting column 49 is arranged on the side of the blocking piece 43 corresponding to the limiting piece 48, through the structure design, the rotation of the blocking piece 43 on the mounting seat two 42 is realized, after the rotation of the blocking piece 43, the blocking piece 43 is restored to the initial state through the elastic force of the spring on the hinge shaft 46, through the cooperation of the limiting column 49 and the limiting piece 48, the limiting column 49 abuts against the limiting piece 48 in the restoring process of the blocking piece 43, and the angle of rotation of the blocking piece 43 when being restored is avoided to be too large.

[0078] In the utility model, when the tool plate 10 needs to be blocked, the mounting seat two 42 and the blocking piece 43 are lifted by the hydraulic cylinder 41, the blocking piece 43 is clamped in the positioning groove 15 of the tool plate 10, so that the blocking of the tool plate 10 is realized, after the workpiece on the tool plate 10 is processed, the tool plate 10 needs to continue to move to the next station on the production line, at this time, the mounting seat two 42 and the blocking piece 43 are lowered by the retraction of the hydraulic cylinder 41, in the process of falling, the friction between the blocking piece 43 and the bottom surface of the tool plate 10 is reduced through the roller 47, the service life of the blocking piece 43 and the tool plate 10 is prolonged, the blocking piece 43 and the mounting seat two 42 are designed to be rotatable, in the process of falling, the tool plate 10 extrudes the blocking piece 43 to make the blocking piece 43 rotate, the time of retraction of the hydraulic cylinder 41 is reduced, and the work efficiency is increased, after the tool plate 10 is separated from the blocking piece 43, the blocking piece 43 rotates under the action of the spring, the excessive rotation of the blocking piece 43 is avoided through the cooperation of the limiting column 49 and the limiting piece 48, and the rotation of the blocking piece 43 when blocking the tool plate 10 is also avoided through the cooperation of the limiting column 49 and the limiting piece 48, so that the stability of the blocking piece 43 when blocking is increased.

[0079] Further, the fixed seat three 44 is bent at both ends to form a third fixed plate 441, the third fixed plate 441 is integrally formed with the fixed seat three 44, a fixing hole 442 is formed in the third fixed plate 441, the fixed seat three 44 is fixed and installed through the fixing hole 442 combined with bolts, an installation bracket 443 is installed on the fixed seat three 44, the installation bracket 443 is provided with a second installation plate 444, the second installation plate 444 and the fixed seat three 44 are provided with a third installation hole 445 in correspondence, the installation bracket 443 is installed on the fixed seat three 44 through the third installation hole 445 combined with bolts, a sensing part 446 is installed on the installation bracket 443, the position of the tool plate 10 is sensed through the sensing part 446, and the sensing part 446 can adopt an inductive switch.

[0080] In the utility model, the water collecting groove 211 is further installed on the frame body 21, water drops falling from the tool plate 10 are collected through the water collecting groove 211, and the water drops are prevented from falling to the ground, the buffer seat 212 is installed at the end of the frame body 21, the second buffer part 213 is installed on the buffer seat 212, the first buffer part 17 on the tool plate 10 corresponds to the second buffer part 213, when the tool plate 10 moves to the end of the frame body 21, the first buffer part 17 on the tool plate 10 is buffered through the second buffer part 213, so that the tool plate 10 is buffered, and the tool plate 10 is prevented from separating from the frame body 21.

[0081] As shown in the figure, Figures 11 to 18 As shown in the figure,

[0082] The welding cooling mechanism 51 comprises a water tank 513, a water tank 514, a valve 515, a bottom plate 511 and a support frame 512, the water tank 514 is located inside the water tank 513, the bottom of the water tank 514 is provided with a first water outlet hole 518, the lower part of the water tank 513 is connected with a drainage box 5112, the drainage box 5112 is provided with a drainage hole 5113, the drainage hole 5113 and the first water outlet hole 518 are in communication with each other, the valve 515 is arranged on the drainage box 5112 and is used for controlling the on-off of the communication between the first water outlet hole 518 and the drainage hole 5113; first, the four-way valve is placed in the water tank 514 for fixation, then the cooling medium is introduced, the four-way valve can be cooled during the welding process, the welding quality is ensured, the waste rate is reduced, after the welding is completed, the first water outlet hole 518 and the drainage hole 5113 are communicated by opening the valve 515, the water in the water tank 514 is output through the drainage hole 5113, the weight of the clamping tool and the four-way valve during the carrying is reduced, the cooling medium in the water tank 514 will shake during the movement, the overflowed cooling medium can be collected through the water tank 513, and the cooling medium splashing to the workshop floor is reduced.

[0083] The water tank 514 is provided with a water supplement hole 516 and a support block 517, the water supplement hole 516 is used for injecting the cooling medium into the water tank 514, the support block 517 is used for supporting the four-way valve and positioning the four-way valve, after the four-way valve and the four-way valve pipe are assembled, the cooling medium is injected into the water tank 514 through the water supplement hole 516, the top of the water tank 514 is provided with a first fixing plate 519, the first fixing plate 519 is provided with a first arc-shaped clamping groove 5110, which is used for positioning the interface of the placed four-way valve, improving the clamping precision of the four-way valve and further improving the welding quality, the water tank 513 is provided with a second water outlet hole 5111, which is used for draining the water in the water tank 513, reducing the weight during the transfer and carrying, and reducing the cooling medium splashing to the workshop floor.

[0084] The bottom plate 511 is connected to the water tank 513 through the support frame 512 and is used for supporting the water tank 513 and the water tank 514, the height of the water tank 513 and the water tank 514 can be integrated through the bottom plate 511 and the support frame 512, the height requirement during the assembly of the four-way valve and the four-way valve pipe by the workers is met, the water tank 513 and the water tank 514 are convenient to connect with the tool plate 10, and it is beneficial to water supplement and drainage.

[0085] The utility model discloses a four-way valve is placed in the water tank 514 and is fixed, and then cooling medium is passed through, can cool four-way valve in the welding process, guarantees the quality of welding, reduces the rejection rate, after welding, through opening the valve 515, can make first water outlet hole 518 and drain hole 5113 intercommunication, and the water in the water tank 514 is exported through drain hole 5113, reduces the weight when the clamping tool and four-way valve carry, and the cooling medium in the water tank 514 will sway in the moving process, and through the water tank 513 can collect the cooling medium that spills, reduces the splashing of cooling medium to workshop ground.

[0086] The pipe clamping mechanism 52 includes a push-pull module 521, a clamping module 522, and a positioning module 523. The clamping module 522 and the positioning module 523 are connected to the push-pull module 521. The push-pull module 521 drives the clamping module 522 and the positioning module 523 to approach or move away from the interface of the four-way valve placed in the water tank 514, thereby clamping or releasing the four-way valve, facilitating the disassembly and assembly of the four-way valve. The push-pull module 521 is manually controlled to work, thereby driving the clamping module 522 and the positioning module 523 to approach or move away from the water tank 514, meeting the clamping requirements of the four-way valve and the four-way valve pipe.

[0087] The pipe clamping mechanism 52 includes a push-pull module 521, a clamping module 522, and a positioning module 523. The clamping module 522 and the positioning module 523 are connected to the push-pull module 521. The push-pull module 521 drives the clamping module 522 and the positioning module 523 to approach or move away from the interface of the four-way valve placed in the water tank 514, thereby clamping or releasing the four-way valve, facilitating the disassembly and assembly of the four-way valve. The push-pull module 521 is manually controlled to work, thereby driving the clamping module 522 and the positioning module 523 to approach or move away from the water tank 514, meeting the clamping requirements of the four-way valve and the four-way valve pipe.

[0088] The push-pull module 521 includes a mounting plate 5211, a slide rail 5212, a slide block 5213, a support seat 5214, a Z-shaped push-pull rod 5215, and an L-shaped rod 52110. The slide rail 5212 and the support seat 5214 are connected to the mounting plate 5211. The L-shaped rod 52110 is connected to the slide block 5213. The slide block 5213 slides along the slide rail 5212. The slide block 5213 is connected to a push-pull block 5219. One end of the Z-shaped push-pull rod 5215 is rotatably connected to the support seat 5214, and the other end is provided with a handle 5216. The Z-shaped push-pull rod 5215 is rotatably connected to a rotating arm 5218 through a rotating shaft 5217. The other end of the rotating arm 5218 is rotatably connected to the push-pull block 5219. By pushing the handle 5216, the Z-shaped push-pull rod 5215 can be rotated along the support seat 5214. The rotating arm 5218 can be driven to move through the rotating shaft 5217, so that the push-pull block 5219 drives the slide block 5213 and the L-shaped rod 52110 to move horizontally along the slide rail 5212, meeting the position adjustment requirements of the clamping module 522 and the positioning module 523.

[0089] The clamping module 522 comprises a first adapter block 5221 and a horizontal plate 5222, the horizontal plate 5222 is fixedly connected to the L-shaped rod 52110 through the first adapter block 5221, one end of the horizontal plate 5222 close to the water tank 514 is integrally formed with a clamping part 5223, the clamping part 5223 is provided with a second arc-shaped clamping groove 5224, which is used for clamping or loosening the interface of the four-way valve placed in the water tank 514, and the first adapter block 5221 improves the connection stability between the horizontal plate 5222 and the L-shaped rod 52110. The second arc-shaped clamping groove 5224 on the clamping part 5223 can clamp and position the interface of the four-way valve.

[0090] The positioning module 523 comprises a second adapter block 5231, an adapter block 5232, a stand column 5233, a supporting plate 5234 and a positioning sleeve 5235, the adapter block 5232 is connected to the first adapter block 5221 through the second adapter block 5231, the supporting plate 5234 is connected to the adapter block 5232 through the stand column 5233, and the positioning sleeve 5235 is arranged on the supporting plate 5234. Through the design of the adapter block 5232, the stand column 5233 and the supporting plate 5234, the positioning sleeve 5235 can be moved to the required position and fixed, meeting the assembly requirements between the four-way valve pipe fitting and the four-way valve, improving the welding quality, and the second adapter block 5231 improves the installation stability of the adapter block 5232.

[0091] The pipe fitting clamping mechanism 53 comprises a second fixed plate 531, a balance plate 532 and at least one clamping unit, the second fixed plate 531 is provided with a locking piece 533 and a positioning pin 5311, the balance plate 532 is provided with a positioning hole 535 and a through hole, the positioning pin 5311 is limited in the positioning hole 535, and the locking piece 533 passes through the through hole. By rotating the locking piece 533, the fixed connection between the balance plate 532 and the second fixed plate 531 is realized, the clamping unit is detachably connected to the balance plate 532, through the design of the locking piece 533 and the positioning pin 5311, not only the installation and dismounting between the balance plate 532 and the second fixed plate 531 is facilitated, but also the connection strength between the balance plate 532 and the second fixed plate 531 is improved. The clamping unit is used for clamping and fixing the four-way valve pipe fitting.

[0092] The clamping unit comprises a vertical rod 536, a clamping block 537, a rotating member 538, a suspension rod 539 and a clamping block 5310. The rotating member 538 is connected to the vertical rod 536 through the clamping block 537. The suspension rod 539 is detachably connected to the rotating member 538. The clamping block 5310 is located at the end of the suspension rod 539 and is used for clamping the four-way valve pipe fitting. The clamping block 5310 can be moved up and down along the vertical rod 536 through the rotating block, so as to adjust the height position of the clamping block 5310. After the clamping block 5310 is rotated to the required angle position, the rotating member 538 can be fixed through the tightening of the screw. The clamping block 5310 can be clamped and fixed through the tightening of the screw after the clamping block 5310 is rotated to the required angle position.

[0093] Through the design of the locking member 533 and the positioning pin 5311, the installation and dismounting between the balance plate 532 and the second fixed plate 531 is facilitated, and the connection strength between the balance plate 532 and the second fixed plate 531 is improved. The clamping unit is used for clamping and fixing the four-way valve pipe fitting.

[0094] The balance plate 532 is provided with at least one mounting hole one 534. The vertical rod 536 is connected to the mounting hole one 534, so as to facilitate the installation and dismounting between the vertical rod 536 and the balance plate 532. Meanwhile, the number of the vertical rod 536 can be increased or reduced according to the number and shape of the four-way valve pipe fitting.

[0095] Through the above structure, the clamping precision of the four-way valve and the four-way valve pipe fitting can be improved, and the welding quality between the four-way valve and the four-way valve pipe fitting can be improved. The welding quality is not affected by the excessively high temperature during the welding of the four-way valve, so as to meet the requirements of the assembly line production and improve the processing efficiency.

[0096] In actual use, the welding cooling mechanism 51 is first fixed to the tooling plate 10, and then the pipe clamping mechanism 52 is installed on the tooling plate 10. The pipe clamping mechanism 53 is installed on one side of the welding cooling mechanism 51. Then, the assembled tooling plate 10 is placed on the conveying line assembly, and is conveyed to each station through the power conveying mechanism 22, so as to realize the installation and clamping positioning of the four-way valve and the four-way valve pipe fitting.

[0097] As Figures 19 to 22As shown, the eight-station transplanting assembly 60 is installed on the second conveying line 30, and the eight-station transplanting assembly 60 comprises a conveying chassis 61, a first conveying mechanism 62, a second conveying mechanism 63 and a positioning plate 64, the first conveying mechanism 62 is installed on the conveying chassis 61, the first conveying mechanism 62 is connected with the second conveying mechanism 63, the first conveying mechanism 62 and the second conveying mechanism 63 drive the tool plate 10 to move to the positioning plate 64 in a directional manner, the tool plate 10 is moved to the positioning plate 64 through the cooperation of the first conveying mechanism 62 and the second conveying mechanism 63, the tool plate 10 is positioned through the positioning plate 64 and moves an equal distance on the positioning plate 64, so that the accurate and efficient transplanting of the transplanted objects is realized, and the operation difficulty and cost are reduced.

[0098] The first conveying mechanism 62 comprises an electric cylinder 624 arranged on the conveying chassis 61 and a linear guide rail 621, the electric cylinder 624 is arranged below the linear guide rail 621, a guide rail sliding block 622 is arranged on the linear guide rail 621, a jacking bottom plate 623 is connected above the guide rail sliding block 622, the number of the jacking bottom plate 623 is arranged according to actual conditions, two guide rail sliding blocks 622 are arranged on each jacking bottom plate 623, the movement stability of the jacking bottom plate 623 is improved, a connecting piece 625 is arranged on the jacking bottom plate 623, the connecting piece 625 is arranged on both sides of the jacking bottom plate 623, adjacent two connecting pieces 625 between adjacent two jacking bottom plates 623 are connected through a connecting rod 626, the synchronous movement of the plurality of jacking bottom plates 623 is realized, the second conveying mechanism 63 is installed on the jacking bottom plate 623, and the second conveying mechanism 63 comprises a pushing air cylinder 631 connected with the jacking bottom plate 623, and a jacking plate 632 connected with the extending end of the pushing air cylinder 631, the jacking plate 632 is jacked through the pushing air cylinder 631, so that the tool plate 10 is lifted and lowered.

[0099] In the utility model, the pushing air cylinder 631 is connected with a speed regulating valve 634, the speed regulating valve 634 is a common component on the market, the speed of the pushing air cylinder 631 is adjusted by adjusting the gas flow of the pushing air cylinder 631 through the speed regulating valve 634, the jacking plate 632 is provided with a positioning pillar two 633 which has the same function as the positioning pillar one, and the tool plate 10 is limited through the positioning pillar two 633.

[0100] The eight-station transplanting assembly 60 is used in the first place to lift the tooling plate 10 through the second conveying mechanism 63, and then drive the second conveying mechanism 63 to move along the direction of the linear guide rail 621, when moving to the welding station, the second conveying mechanism 63 is retracted, and the tooling plate 10 is placed on the positioning plate 64, and the positioning plate 64 is provided with a positioning support three 641, and the tooling plate 10 is provided with a positioning through hole 111 corresponding to the positioning support three 641, and the tooling plate 10 is limited on the positioning plate 64 through the cooperation of the positioning support three 641 and the positioning through hole 111, so as to avoid the movement of the positioning plate 64 during welding, and the eight-station transplanting assembly 60 moves two tooling plates 10 at a time, thereby increasing the work efficiency.

[0101] Specifically, the rack is also provided with a check assembly 65, which is arranged at one end of the rack. The check assembly 65 includes a connecting plate two 651 connected with the rack, a connecting block 652 arranged on the connecting plate two 651, an elastic member 653 arranged in the connecting block 652, and a check member 654 connected with the connecting block 652. The check member 654 is hinged to the connecting block 652, and the connecting block 652 is provided with a limiting groove for the movement of the check member 654. The elastic member 653 is connected with the check member 654, and the check member 654 is driven to move along the limiting groove through the deformation of the elastic member 653 to adjust the position. When the tooling plate 10 moves forward, the tooling plate 10 contacts the check member 654, the tooling plate 10 presses the check member 654, the check member 654 is pressed downward along the limiting groove, and the elastic member 653 is contracted. The tooling plate 10 passes through the check member 654, the elastic member 653 restores to drive the check member 654 to move upward, and the tooling plate 10 cannot press the check member 654 in the reverse direction, thereby achieving the locking of the one-way movement. The arrangement of the check assembly 65 prevents the tooling plate 10 from moving back when moving.

[0102] As shown in Figure 23 The nitrogen charging and water supplementing assembly 70 includes a nitrogen charging mechanism 71 and a water supplementing mechanism 72. The nitrogen charging mechanism 71 is used to charge nitrogen into the workpiece, and the water supplementing mechanism 72 is used to charge cooling medium into the clamping tool assembly 50. The cooling medium can be cooling water or cooling liquid. The nitrogen charging mechanism 71 and the water supplementing mechanism 72 are both mounted on a mounting plate three 73.

[0103] The nitrogen charging mechanism 71 includes a telescopic cylinder one 711, a connecting plate one 712, and a nitrogen charging connector 713. The connecting plate one 712 is mounted on the telescopic cylinder one 711, and the nitrogen charging connector 713 is mounted on the connecting plate one 712. The nitrogen charging connector 713 is connected with an external nitrogen charging pipeline in communication. The nitrogen charging connector 713 is driven by the telescopic cylinder one 711 to move toward the clamping tool assembly 50, and is connected with a four-way valve pipe in communication through the pipeline, so as to charge nitrogen into the four-way valve, thereby protecting the four-way valve during welding and ensuring the welding quality.

[0104] The water supplement mechanism 72 comprises a telescopic cylinder two 721, a connecting pipe 722, a water supplement joint 723 and a water supplement pipe 724, the connecting pipe 722 is installed on the telescopic cylinder two 721, the water supplement joint 723 is installed on the connecting pipe 722, the water supplement pipe 724 is connected with the water supplement joint 723, the water supplement pipe 724 is driven to move by the telescopic cylinder two 721 and fills the cooling medium into the clamping tool assembly 50, so that the four-way valve is protected.

[0105] A production method of a multiple-speed chain production line, characterized in that it comprises the following steps:

[0106] S1, starting the production line;

[0107] S2, placing the tool plate 10, first placing the tool plate 10 on the conveying line assembly, then installing the clamping tool assembly 50 on the tool plate 10, the tool plate 10 moves along the production direction of the production line with the clamping tool assembly 50, and when the tool plate 10 moves to the next station, it is blocked by the buffer blocking assembly 40;

[0108] S3, repeating step S2, continuously placing the tool plate 10 on the conveying line assembly;

[0109] S4, installing the workpiece, when the tool plate 10 moves on the conveying line assembly, the workpiece is installed with different pipes at different stations, and after the pipe installation is completed, the pipe is clamped and positioned by the pipe clamping mechanism 52 and the pipe clamping mechanism 53;

[0110] 1) First rotation and reversing, when the tool plate 10 moves on the production line, the tool plate 10 needs to be rotated and reversed, which is convenient for pipe installation, when the tool plate 10 is located on the first conveying line 20, first rotate the tool plate 10 counterclockwise by 90° through the rotating mechanism 24, when the tool plate 10 moves to the end of the first conveying line 20, move the tool plate 10 to the second conveying line 30 through the reversing mechanism 23, continue to install the workpiece on the second conveying line 30, until the tool plate 10 moves to the second conveying line 20;

[0111] 2) Second rotation and reversing, when the tool plate 10 moves on the second conveying line, first rotate the tool plate 10 clockwise by 90° through the rotating mechanism 24, when the tool plate 10 moves to the end of the second conveying line 20, complete the installation of the workpiece, and move the tool plate 10 to the second conveying line 30 through the reversing mechanism 23;

[0112] S5, the workpiece is welded on the second conveying line 30, and is moved by the eight-station moving assembly 60 to ensure that the welding device corresponds to the welding interface, and the workpiece is moved to the first conveying line 20 after welding to complete welding.

[0113] The four-way valve and the pipe fitting thereof can be directly welded after installation, so that the clamping precision and the installation efficiency of the four-way valve and the four-way valve pipe fitting are improved, the welding quality and the welding speed between the four-way valve and the pipe fitting are improved, the assembly line operation is realized, and the machining efficiency is improved.

[0114] The above is only a specific embodiment of the utility model, but the technical features of the utility model are not limited to this. Any simple change, equivalent replacement or modification, etc. made on the basis of the utility model to solve the basically same technical problems and realize the basically same technical effects are all covered in the protection scope of the utility model.

Claims

1. A multiple speed chain production line characterized by: The device comprises a conveying line assembly for conveying a tool plate, a clamping tool assembly mounted on the tool plate for clamping and positioning workpieces, and an eight-station transplanting assembly mounted on the conveying line assembly for orienting and transplanting the tool plate to weld workpieces in the clamping tool assembly. The conveying line assembly comprises a first conveying line and a second conveying line, which form a production line. The first conveying line and the second conveying line each comprise a power conveying mechanism and a frame. The power conveying mechanism is mounted on the frame and provides power for conveying the tool plate. The eight-station transplanting assembly is mounted on the second conveying line. The first conveying line further comprises a reversing mechanism for reversing and conveying the tool plate to the second conveying line and a rotating mechanism for rotating the tool plate. The clamping tool assembly comprises a welding cooling mechanism for placing workpieces and injecting cooling medium to cool and protect workpieces during welding, a pipe clamping mechanism for clamping and positioning the interface of workpieces and positioning the pipe of workpieces, and a pipe clamping mechanism connected with the welding cooling mechanism for clamping the pipe of workpieces. The eight-station transplanting assembly comprises a conveying chassis, a first conveying mechanism, a second conveying mechanism, and a positioning plate. The first conveying mechanism is mounted on the conveying chassis and connected with the second conveying mechanism. The first conveying mechanism and the second conveying mechanism drive the tool plate to move directionally to the positioning plate. The positioning plate is used to position the tool plate.

2. A multiple speed chain production line according to claim 1, characterized in that: The power conveying mechanism comprises a drive motor, a drive shaft, a driving gear, a driven gear, and a chain. The drive motor is connected with the drive shaft through a coupling. The drive shaft is rotatably mounted on the frame. The driving gear is mounted on the drive shaft. The driven gear is rotatably mounted on a mounting shaft, which is mounted on the frame. The chain is mounted on the driving gear and the driven gear.

3. A multiple speed chain production line as claimed in claim 1, wherein: The reversing mechanism and the rotating mechanism each comprise a jacking module. The reversing mechanism comprises a transplanting module for controlling the reversing movement of the tool plate. The rotating mechanism comprises a rotating module for rotating the tool plate. The jacking module is used to push the transplanting module or the rotating module up and down.

4. A multiple speed chain production line according to claim 3, characterized in that: The jacking module comprises a mounting seat one, a jacking seat, a jacking cylinder, a guide seat and a guide rod, the jacking cylinder is installed on the mounting seat one, the jacking cylinder is connected with the jacking seat, the jacking cylinder drives the jacking seat to lift, the transplanting module or the rotating module is installed on the jacking seat, the guide seat is fixed on the mounting seat one, the guide seat penetrates through the mounting seat one, the guide rod is installed on the jacking seat through a fixed seat one, the guide rod penetrates through the guide seat and slides along the guide seat.

5. A multiple speed chain production line according to claim 4, characterized in that: The transplanting module comprises a roller and a transplanting motor, the transplanting motor is connected with the roller, the transplanting motor drives the roller to rotate, the roller is provided in plurality, the plurality of rollers are installed on the jacking seat, the roller is provided with a tooth part, two adjacent rollers are combined through the tooth part to realize synchronous rotation by a belt.

6. A multiple speed chain production line as claimed in claim 4, wherein: The rotating module comprises a rotating motor, a rotating seat, a fixed seat two and a limiting plate, the fixed seat two is fixed on the jacking seat, the rotating motor is installed on the fixed seat two, the rotating seat is installed in the fixed seat two, the rotating motor is connected with the rotating seat, the rotating motor controls the rotating seat to rotate, the limiting plate is installed on the rotating seat, the limiting plate rotates synchronously with the rotating seat, the limiting plate is provided with a limiting pillar one, the limiting plate is used for placing the tool plate and limiting the tool plate through the limiting pillar one.

7. A multiple speed chain production line as claimed in claim 1, wherein: It also comprises a buffer blocking assembly, the buffer blocking assembly is installed on the conveying line assembly, the buffer blocking assembly is used for buffering and blocking the tool plate, the buffer blocking assembly comprises a hydraulic cylinder, a mounting seat two, a blocking piece and a fixed seat three, the mounting seat two is connected with the hydraulic cylinder, the hydraulic cylinder is installed on the fixed seat three, the hydraulic cylinder is used for driving the mounting seat two to lift, the blocking piece is rotatably installed on the mounting seat two, and the blocking piece is used for blocking the work plate.

8. A multiple speed chain production line according to claim 7, characterized in that: The mounting seat two is provided with a mounting space, a hinge shaft penetrates through the mounting space, one end of the blocking piece is rotatably installed on the hinge shaft, a spring is sleeved on the hinge shaft, the other end of the blocking piece is rotatably installed with a roller, the mounting seat two is installed with a limiting piece, the blocking piece is provided with a limiting column, and the limiting column abuts against the limiting piece.

9. A multiple speed chain production line as claimed in claim 1, wherein: The welding cooling mechanism comprises a water tank, a water tank, a valve, a bottom plate and a support frame, the water tank is located on the inner side of the water tank, the bottom of the water tank is provided with a first water outlet, the lower part of the water tank is connected with a drainage box, the drainage box is provided with a drainage hole, the drainage hole and the first water outlet are in communication with each other, the valve is arranged in the drainage box, and the valve is used for controlling the on-off of the first water outlet and the drainage hole, the bottom plate is connected to the water tank through the support frame, and the bottom plate is used for supporting the water tank and the water tank.

10. A multiple speed chain production line according to claim 9, characterized in that: The water tank is provided with a water supplement hole for injecting cooling medium into the water tank and a support block for supporting and positioning a workpiece, and the top of the water tank is provided with a first fixing plate provided with a first arc-shaped clamping groove for positioning the interface of the placed workpiece.

11. A multiple speed chain production line according to claim 9, characterized in that: The pipe clamping mechanism comprises a push-pull module, a clamping module and a positioning module, the clamping module and the positioning module are connected to the push-pull module, the clamping module and the positioning module are driven by the push-pull module to approach or move away from the interface of the workpiece placed in the water tank, so as to clamp or release the workpiece, facilitating the disassembly and assembly of the workpiece.

12. A multiple speed chain production line according to claim 11, characterized in that: The push-pull module comprises a mounting plate one, a sliding rail, a sliding block, a support seat, a Z-shaped push-pull rod and an L-shaped rod, the sliding rail and the support seat are connected to the mounting plate one, the L-shaped rod is connected to the sliding block, the sliding block slides along the sliding rail, the sliding block is connected with a push-pull block, one end of the Z-shaped push-pull rod is rotatably connected to the support seat, the other end is provided with a handle, the Z-shaped push-pull rod is rotatably connected with a rotating arm through a rotating shaft, and the other end of the rotating arm is rotatably connected to the push-pull block.

13. A multiple speed chain production line according to claim 12, characterized in that: The clamping module comprises a first connecting block and a horizontal plate, the horizontal plate is fixedly connected to the L-shaped rod through the first connecting block, and a clamping portion is integrally formed at one end of the horizontal plate close to the water tank, a second arc-shaped clamping groove is arranged on the clamping portion for clamping or releasing the interface of the workpiece placed in the water tank.

14. A multiple speed chain production line according to claim 13, characterized in that: The positioning module comprises a second connecting block, an adapter block, a stand, a supporting plate and a positioning sleeve, the adapter block is connected to the first connecting block through the second connecting block, the supporting plate is connected to the adapter block through the stand, and the positioning sleeve is arranged on the supporting plate.

15. A multiple speed chain production line as claimed in claim 1, wherein: The pipe clamping mechanism comprises a second fixing plate, a balance plate and at least one clamping unit, the second fixing plate is provided with a locking piece and a positioning pin, the balance plate is provided with a positioning hole and a through hole, the positioning pin is limited in the positioning hole, and the locking piece passes through the through hole, by rotating the locking piece, the fixed connection between the balance plate and the second fixing plate is realized, and the clamping unit is detachably connected to the balance plate.

16. A multiple speed chain production line according to claim 15, characterized in that: The clamping unit comprises a vertical rod, a clamping block, a rotating piece, a suspension rod and a clamping block, the rotating piece is connected to the vertical rod through the clamping block, the suspension rod is detachably connected to the rotating piece, the clamping block is located at the end of the suspension rod for clamping the pipe of the workpiece, and the balance plate is provided with at least one mounting hole one, and the vertical rod is connected to the mounting hole one.

17. A multiple speed chain production line as claimed in claim 1, wherein: The first conveying mechanism comprises a linear guide rail, a guide rail slider, a jacking bottom plate and an electric cylinder, the linear guide rail is arranged on the conveying chassis, the guide rail slider is installed on the linear guide rail, the jacking bottom plate is connected with the guide rail slider, the electric cylinder is connected with the jacking bottom plate, the guide rail slider is driven to move along the linear guide rail through the extension and contraction of the electric cylinder, the jacking bottom plate is provided with a connecting piece, and the connecting pieces on two adjacent jacking bottom plates are connected through a connecting rod; the second conveying mechanism comprises a pushing cylinder and a jacking plate, the jacking plate is installed on the output end of the pushing cylinder, and the jacking plate is lifted through the pushing cylinder to drive the tool plate to ascend and descend.

18. A multiple speed chain production line as claimed in claim 1, wherein: The nitrogen filling and water supplementing assembly is used for supplementing water and nitrogen into the clamping tool assembly and the workpiece, so as to protect the workpiece during welding. The nitrogen filling and water supplementing assembly comprises a nitrogen filling mechanism and a water supplementing mechanism. The nitrogen filling mechanism is used for filling nitrogen into the workpiece. The water supplementing mechanism is used for filling cooling medium into the clamping tool assembly.

19. A multiple speed chain production line according to claim 18, wherein: The nitrogen filling mechanism comprises a telescopic cylinder one, a connecting plate one and a nitrogen filling connector. The connecting plate one is installed on the telescopic cylinder one. The nitrogen filling connector is installed on the connecting plate one. The nitrogen filling connector is driven to move by the telescopic cylinder one and fills nitrogen into the workpiece. The water supplementing mechanism comprises a telescopic cylinder two, a connecting pipe, a water supplementing connector and a water supplementing pipe. The connecting pipe is installed on the telescopic cylinder two. The water supplementing connector is installed on the connecting pipe. The water supplementing pipe is connected with the water supplementing connector. The water supplementing pipe is driven to move by the telescopic cylinder two and fills cooling medium into the clamping tool assembly.

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