Welding apparatus

Abstract

The present application relates to the technical field of welding machine, specifically to a welding device, which comprises a workbench, a feeding assembly, a riveting mechanism and a positioning welding assembly arranged on the workbench; the positioning welding assembly comprises a supporting bracket, a welding mechanism and a supporting piece, the supporting bracket is installed on the workbench, the welding mechanism and the supporting piece are both installed on the supporting bracket, and the supporting piece is used for supporting a second workpiece to be welded; the feeding assembly is used for conveying a first workpiece to be welded to the riveting mechanism, and the riveting mechanism is used for preliminarily fixing the first workpiece to be welded on the second workpiece to be welded. The welding device can be applied to welding parts with relatively complex structures, and different structures of the supporting piece and the riveting mechanism can be correspondingly arranged according to different parts; the welding device realizes automatic welding processing, guarantees the processing efficiency and the welding quality, and especially the first workpiece to be welded can be preliminarily fixed on the second workpiece to be welded through the riveting mechanism, which further guarantees the smoothness and stability of the subsequent welding process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding machines, in particular to a welding device. BACKGROUND

[0002] The existing automatic welding device usually only has the functions of feeding, clamping and welding, and can only be used for welding parts with relatively simple structures, and has poor practicability and narrow application range. For parts with more complex structures, manual feeding, preliminary fixing and welding are required, so the production efficiency is low and the welding quality is unstable. SUMMARY

[0003] The present application aims to provide a welding device to solve the technical problems of narrow application range, low production efficiency and unstable welding quality in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides a welding device for welding a first welding part on a second welding part, which comprises a workbench, a feeding assembly, a riveting mechanism and a positioning and welding assembly arranged on the workbench. The positioning and welding assembly comprises a supporting bracket, a welding mechanism and a supporting part, the supporting bracket is installed on the workbench, the welding mechanism and the supporting part are both installed on the supporting bracket, and the supporting part is used for supporting the second welding part. The feeding assembly is used for feeding the first welding part to the riveting mechanism, and the riveting mechanism is used for preliminarily fixing the first welding part on the second welding part.

[0005] Preferably, the feeding assembly comprises a vibrating disc, a feeding transfer mechanism and a feeding clamping mechanism, the feeding transfer mechanism is located between the vibrating disc and the feeding clamping mechanism, the vibrating disc is used for feeding the first welding part to the feeding transfer mechanism in sequence, and the feeding clamping mechanism is used for clamping the first welding part on the feeding transfer mechanism and feeding it to the riveting mechanism. The continuous and orderly feeding of the first welding part can be realized, and the feeding transfer mechanism can complete the transfer and adjustment of the first welding part, and the feeding clamping mechanism can ensure that the first welding part is stably fed to the riveting mechanism.

[0006] Preferably, the feeding clamping mechanism comprises a feeding support bracket, a rotary cylinder, a feeding support, a clamping lifting cylinder and a feeding clamp, the feeding support bracket is located on one side of the riveting mechanism, the rotary cylinder is installed on the feeding support bracket, the feeding support is installed on the rotary output end of the rotary cylinder, the clamping lifting cylinder is installed on the feeding support, and the feeding clamp is installed on the output end of the clamping lifting cylinder. Full-automatic operation can be realized, and the feeding clamping mechanism can be suitable for feeding first welding parts of various shapes. The feeding clamping mechanism can be arranged on one side of the riveting mechanism, and the overall structure is compact.

[0007] Preferably, the feeding transfer mechanism comprises a feeding fixing frame, a feeding sliding table cylinder and a feeding positioning block. The feeding fixing frame is installed on the workbench. The feeding sliding table cylinder is installed on the feeding fixing frame. The feeding positioning block is installed on the sliding seat of the feeding sliding table cylinder and is used for placing the first welding piece. The feeding transfer mechanism can undertake the transmission between the vibration disc and the feeding clamping mechanism to facilitate the feeding of the vibration disc and the clamping of the feeding clamping mechanism on the first welding piece. Different feeding positioning blocks can be selected according to different shapes of the first welding piece.

[0008] Preferably, the riveting mechanism comprises a riveting support, a pushing cylinder and a riveting assembly. The riveting support is installed on the workbench. The pushing cylinder is installed on the riveting support. The riveting assembly is connected with the output end of the pushing cylinder and is used for preliminarily fixing the first welding piece on the second welding piece. The pushing cylinder pushes the riveting assembly to move, so that the riveting assembly can receive the first welding piece conveyed by the feeding assembly and accurately convey the first welding piece to the corresponding position of the support.

[0009] Preferably, the riveting assembly comprises a cylinder fixing seat, a riveting cylinder and a riveting jig. The cylinder fixing seat is connected with the output end of the pushing cylinder. The riveting cylinder is installed on the cylinder fixing seat and has an upward output end. The riveting jig is connected with the output end of the riveting cylinder. The riveting jig is used for placing the first welding piece. The output end of the riveting cylinder is extended to preliminarily fix the first welding piece on the second welding piece, and the riveting jig can stably place the first welding piece.

[0010] Preferably, the riveting assembly further comprises a limiting block installed on the cylinder fixing seat. The limiting block is provided with a limiting cavity. The riveting jig is slidably embedded in the limiting cavity. The first welding piece is stably lifted when preliminarily fixed on the second welding piece, and can be accurately fixed on the corresponding position of the second welding piece.

[0011] Preferably, the riveting assembly further comprises a positioning clamp used for positioning and fixing the first welding piece. The positioning clamp is installed on the cylinder fixing seat. The first welding piece is prevented from shaking or even falling during movement.

[0012] Preferably, the riveting mechanism further comprises a pushing sliding rail, a pushing sliding block and a buffer. The pushing sliding rail is installed on the riveting support. The pushing sliding block is installed on the riveting assembly and is slidably installed on the pushing sliding rail. The riveting support is provided with the buffer at both ends of the pushing sliding rail. The buffer is used for buffering the sliding of the riveting assembly. The riveting assembly moves more smoothly and directionally, and is prevented from deviating. When the riveting assembly moves to the limit position in two directions, the buffer buffers, so that the riveting assembly moves more stably.

[0013] Preferably, the positioning and welding assembly further comprises a hole positioning mechanism, the hole positioning mechanism comprising a Z-axis sliding table cylinder, a Y-axis sliding table cylinder, a hole positioning sleeve and a hole positioning rod, the Z-axis sliding table cylinder being mounted on the support support and located on one side of the support piece, the Y-axis sliding table cylinder being mounted on the sliding seat of the Z-axis sliding table cylinder, the hole positioning sleeve being connected with the sliding seat of the Y-axis sliding table cylinder, and the hole positioning rod being mounted on the hole positioning sleeve. The hole positioning mechanism can realize accurate positioning of the second welding piece, and facilitate subsequent preliminary fixation of the first welding piece on the second welding piece.

[0014] Preferably, the positioning and welding assembly further comprises a pressing mechanism, the pressing mechanism comprising a pressing cylinder, a pressing block and a rivet pressing limiting block, the pressing cylinder being mounted on the support support, the pressing block being mounted on the output end of the pressing cylinder and located directly above the support piece, and the rivet pressing limiting block being mounted on the pressing block and having a through hole for the first welding piece to pass through. The pressing mechanism can further fix the second welding piece, prevent the second welding piece from being offset after being fed to the support piece, and affect the preliminary fixation of the first welding piece on the second welding piece.

[0015] Preferably, the pressing mechanism further comprises a flattening cylinder and an extension block, the flattening cylinder being mounted on the pressing block, and the extension block being mounted on the output end of the flattening cylinder and having a through hole for the first welding piece to pass through. The pressing function and the flattening function are combined together, the overall structure is relatively simple and reasonable, and the machining parts are more suitable.

[0016] Preferably, the welding mechanism comprises a Y-axis moving device, a Y-axis fixed frame, a Z-axis moving device and a welding head, the Y-axis moving device being mounted on the support support, the Y-axis fixed frame being mounted on the output end of the Y-axis moving device, the Z-axis moving device being mounted on the Y-axis fixed frame, and the welding head being mounted on the output end of the Z-axis moving device. The welding head can be flexibly adjusted in position, facilitating feeding of the second welding piece, and can be used for welding machining of different workpieces.

[0017] The welding equipment has at least the following beneficial effects: the second welding piece can be supported and fixed by the support piece on the support support, the first welding piece fed by the feeding assembly can be preliminarily fixed on the second welding piece by the riveting mechanism, and finally welding is performed by the welding mechanism; therefore, the welding equipment can be applied to machining of parts with complex welding structures, different support pieces and riveting mechanisms with different structures can be correspondingly arranged for different parts; the welding equipment realizes automatic welding machining, ensures machining efficiency and welding quality, and in particular, the first welding piece can be preliminarily fixed on the second welding piece by the riveting mechanism, further ensuring smooth and stable subsequent welding process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without any creative effort.

[0019] Figure 1 It is a structural schematic diagram of the welding equipment of the present application;

[0020] Figure 2 It is a structural schematic diagram of the welding equipment of the present application from another angle;

[0021] Figure 3 It is a structural schematic diagram of the feeding transfer mechanism of the present application;

[0022] Figure 4 It is a structural schematic diagram of the feeding clamping mechanism of the present application;

[0023] Figure 5 It is a structural schematic diagram of the pressing rivet mechanism of the present application;

[0024] Figure 6 It is a structural schematic diagram of the pressing rivet mechanism of the present application from another angle;

[0025] Figure 7 It is an exploded structural schematic diagram of the pushing material cylinder, the pressing rivet jig and the limiting block of the present application;

[0026] Figure 8 It is a structural schematic diagram of the positioning welding assembly of the present application;

[0027] Figure 9 It is a structural schematic diagram of the welding mechanism of the present application;

[0028] Figure 10 It is a structural schematic diagram of the hole positioning mechanism of the present application;

[0029] Figure 11 It is a structural schematic diagram of the pressing mechanism of the present application;

[0030] Figure 12 It is a structural schematic diagram of the pressing mechanism of the present application from another angle;

[0031] Figure 13 It is an exploded structural schematic diagram of the pressing mechanism of the present application;

[0032] Figure 14 It is an assembly structural schematic diagram of the supporting piece, the photoelectric switch mechanism and the supporting bracket of the present application;

[0033] Figure 15 It is a structural schematic diagram of the temperature sensing tube;

[0034] Figure 16 The structure diagram of the tank body.

[0035] In the drawings: 1-Workbench, 2-Feeding assembly, 21-Vibration disc, 22-Feeding transfer mechanism, 221-Feeding fixing frame, 222-Feeding sliding table cylinder, 223-Feeding positioning block, 23-Feeding clamping mechanism, 231-Feeding support frame, 232-Rotary cylinder, 233-Feeding support, 234-Clamping lifting cylinder, 235-Feeding clamp, 2351-Pneumatic finger, 2352-Left feeding claw, 2353-Right feeding claw, 236-Connecting plate, 3-Riveting mechanism, 31-Riveting support, 32-Pushing cylinder, 331-Cylinder fixing seat, 332-Riveting cylinder, 333-Riveting clamp, 334-Limiting block, 3341-Limiting cavity, 335-Positioning clamp, 3351-Pneumatic clamping finger, 3352-Left positioning clamp, 3353-Right positioning clamp, 336-Loading reinforcing rib, 34-Pushing sliding rail, 35-Pushing sliding block, 36-Bumper, 4-Positioning welding assembly, 41-Supporting support, 42-Welding mechanism, 421-Y-axis moving device, 422-Y-axis fixing frame, 423-Z-axis moving device, 424-Welding head, 43-Supporting piece, 44-Hole positioning mechanism, 441-Z-axis sliding table cylinder, 442-Y-axis sliding table cylinder, 443-Hole positioning sleeve, 444-Hole positioning rod, 445-Fixing piece, 45-Pressing-down mechanism, 451-Pressing-down cylinder, 452-Pressing-down block, 453-Riveting limiting block, 4531-Through hole, 454-Fixing plate, 455-Flattening cylinder, 456-Expansion block, 4561-Hole, 46-Photoelectric switch mechanism, 461-Photoelectric support, 462-Diffuse reflection photoelectric switch, 5-Temperature sensing tube, 6-Tank body, 61-Welding hole.

[0036] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0038] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0039] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0040] As shown in Figures 1 to 16 The welding device is used for welding a first welding part on a second welding part, and comprises a workbench 1, a feeding assembly 2, a riveting mechanism 3 and a positioning welding assembly 4 arranged on the workbench 1; the positioning welding assembly 4 comprises a supporting bracket 41, a welding mechanism 42 and a supporting part 43, the supporting bracket 41 is installed on the workbench 1, the welding mechanism 42 and the supporting part 43 are both installed on the supporting bracket 41, and the supporting part 43 is used for supporting the second welding part; the feeding assembly 2 is used for conveying the first welding part to the riveting mechanism 3, and the riveting mechanism 3 is used for preliminarily fixing the first welding part on the second welding part.

[0041] The workbench 1 is used to support the feeding assembly 2, the pressure riveting assembly and the positioning welding assembly 4. The feeding robot or other feeding device loads the second workpiece to be welded onto the support 43. The first workpiece to be welded is transported from the feeding assembly 2 to the pressure riveting mechanism 3. The pressure riveting mechanism 3 then transports the second workpiece to be welded to the support 43 and aligns it with the second workpiece to be welded. The pressure riveting mechanism 3 then preliminarily fixes the first workpiece to be welded to the second workpiece to be welded. Finally, the welding mechanism 42 welds and fixes the connection between the first and second workpieces to be welded. Taking the welding of the temperature sensing tube 5 to the tank body 6 as an example, the temperature sensing tube 5 is transported from the feeding assembly 2 to the pressure riveting mechanism 3 as the first workpiece to be welded. The tank body 6 is loaded onto the support 43 as the second workpiece to be welded. Among them, the tank body 6 is provided with a hole for inserting the temperature sensing tube 5. The pressure riveting mechanism 3 inserts the temperature sensing tube 5 into the hole of the tank body 6 to complete the preliminary fixation. Finally, the welding mechanism 42 welds the connection between the temperature sensing tube 5 and the tank body 6 to complete the fixation. In the present technical solution, the second workpiece to be welded can be supported and fixed first by the support member 43 on the support bracket 41, and the riveting mechanism 3 can preliminarily fix the first workpiece to be welded delivered by the feeding assembly 2 on the second workpiece to be welded, and finally the welding mechanism 42 is used for welding; therefore, it can be suitable for parts with more complex welding structures, and for parts with different structures, support members 43 and riveting mechanisms 3 with different structures can be set accordingly; the welding equipment realizes automated welding processing, ensures processing efficiency and welding quality, especially the riveting mechanism 3 can preliminarily fix the first workpiece to be welded on the second workpiece to be welded, further ensuring the smoothness and stability of the subsequent welding process.

[0042] Further, if Figure 1 and Figure 2 As shown, the feeding assembly 2 includes a vibration plate 21, a feeding transfer mechanism 22 and a feeding clamping mechanism 23 installed on the workbench 1. The feeding transfer mechanism 22 is located between the vibration plate 21 and the feeding clamping mechanism 23. The vibration plate 21 is used to load the first workpiece to be welded onto the feeding transfer mechanism 22 in sequence. The feeding clamping mechanism 23 is used to clamp the first workpiece to be welded on the feeding transfer mechanism 22 and load it onto the riveting mechanism 3.

[0043] The vibrating disc 21 is an auxiliary feeding device of an automatic assembly or automatic processing machine, referred to as a component feeding device; it can arrange various products in order, cooperate with an automatic assembly device to assemble each part of the product into a complete product, or cooperate with an automatic processing machine to complete the processing of a workpiece. A batch of first welding pieces are stored on the vibrating disc 21, and the vibrating disc 21 can arrange and transport the first welding pieces one by one when operating; the feeding transfer mechanism 22 is used for the transfer and adjustment of the first welding pieces in the transportation process, and the feeding clamping mechanism 23 can clamp and transport the first welding pieces on the feeding transfer mechanism 22 to the riveting mechanism 3. The feeding assembly 2 is thus arranged, which can realize continuous and orderly feeding of the first welding pieces, and can complete the transfer and adjustment of the first welding pieces through the feeding transfer mechanism 22, and the feeding clamping mechanism 23 can ensure that the first welding pieces are stably fed into the riveting mechanism 3.

[0044] Further, as shown in Figure 2 and Figure 4 , the feeding clamping mechanism 23 includes a feeding support frame 231, a rotating cylinder 232, a feeding support 233, a clamping lifting cylinder 234, and a feeding clamp 235. The feeding support frame 231 is located on one side of the riveting mechanism 3, the rotating cylinder 232 is installed on the feeding support frame 231, the feeding support 233 is installed on the rotating output end of the rotating cylinder 232, the clamping lifting cylinder 234 is installed on the feeding support 233, and the feeding clamp 235 is installed on the output end of the clamping lifting cylinder 234.

[0045] The feeding clamp 235 comprises a pneumatic finger 2351, a left feeding jaw 2352 and a right feeding jaw 2353, the left feeding jaw 2352 and the right feeding jaw 2353 are respectively installed on two clamping fingers of the pneumatic finger 2351, the left feeding jaw 2352 and the right feeding jaw 2353 are controllable to approach or move away from each other by the pneumatic finger 2351, so as to clamp or release the first welding piece. The feeding support frame 231 is installed on the workbench 1 or the support bracket 41 and located at one side of the pressure riveting mechanism 3, the rotary cylinder 232 is installed on the feeding support frame 231 and can drive the feeding support frame 233 to rotate, the feeding support frame 233 is an L-shaped plate, one side of which is connected with the rotary output end of the rotary cylinder 232, and the other side is provided with the clamping and lifting cylinder 234, the output end of the clamping and lifting cylinder 234 faces upward, and the connecting plate 236 is installed on the output end of the clamping and lifting cylinder 234, and the feeding clamp 235 is specifically installed on the connecting plate 236; specifically, the pneumatic finger 2351 is installed on the lower end face of the connecting plate 236 and located at one side of the clamping and lifting cylinder 234, and the clamping fingers of the pneumatic finger 2351 face downward. The process that the feeding clamp feeding mechanism 23 feeds the first welding piece on the feeding transfer mechanism 22 to the pressure riveting mechanism 3 is as follows: the output end of the clamping and lifting cylinder 234 is extended to drive the connecting plate 236 and the feeding clamp 235 to rise; the rotary cylinder 232 is started to rotate the rotary output end, thereby driving the feeding support frame 233, the clamping and lifting cylinder 234 and the feeding clamp 235 to rotate; when the feeding clamp 235 rotates to the position directly above the feeding transfer mechanism 22, the rotary cylinder 232 is paused, then the output end of the clamping and lifting cylinder 234 is retracted to drive the feeding clamp 235 to descend; when the left feeding jaw 2352 and the right feeding jaw 2353 in the feeding clamp 235 descend to the positions on both sides of the first welding piece, the output end of the clamping and lifting cylinder 234 stops retraction; the pneumatic finger 2351 is started to drive the left feeding jaw 2352 and the right feeding jaw 2353 to approach each other and clamp the first welding piece; then the output end of the clamping and lifting cylinder 234 rises, the rotary output end of the rotary cylinder 232 rotates to the position directly above the first welding piece on the pressure riveting mechanism 3; finally, the output end of the clamping and lifting cylinder 234 descends, and the left feeding jaw 2352 and the right feeding jaw 2353 move away from each other to feed the first welding piece, so as to feed the first welding piece to the pressure riveting mechanism 3. The specific structure of the feeding clamp feeding mechanism 23 is provided to realize fully automatic operation and be applicable to feeding of first welding pieces of various shapes; the feeding clamp feeding mechanism 23 can be arranged at one side of the pressure riveting mechanism 3, and the overall structure is relatively compact.

[0046] Further, as Figure 2 and Figure 3As shown in the drawings, the feeding transfer mechanism 22 comprises a feeding fixing frame 221, a feeding sliding table cylinder 222 and a feeding positioning block 223. The feeding fixing frame 221 is installed on the workbench 1. The feeding sliding table cylinder 222 is installed on the feeding fixing frame 221. The feeding positioning block 223 is installed on the sliding seat of the feeding sliding table cylinder 222 and is used for placing the first welding piece.

[0047] The feeding fixing frame 221 is installed on the workbench 1 and is located between the vibration disc 21 and the feeding clamping mechanism 23. The feeding sliding table cylinder 222 is installed on the feeding fixing frame 221. The sliding direction of the sliding table of the feeding sliding table cylinder 222 is the direction of the line between the vibration disc 21 and the feeding clamping mechanism 23. The feeding positioning block 223 for placing the first welding piece is installed on the sliding table of the feeding sliding table cylinder 222. The feeding positioning block 223 is provided with a counterbore for accommodating the first welding piece. When the feeding sliding table cylinder 222 works, the feeding positioning block 223 can be driven to approach the vibration disc 21. After the first welding piece on the vibration disc 21 is fed to the feeding positioning block 223, the sliding table of the feeding sliding table cylinder 222 slides to approach the feeding clamping mechanism 23, so as to facilitate the feeding clamping mechanism 23 to clamp the first welding piece. The feeding transfer mechanism 22 can undertake the transmission between the vibration disc 21 and the feeding clamping mechanism 23, so as to facilitate the feeding of the vibration disc 21 and the clamping of the first welding piece by the feeding clamping mechanism 23. Different feeding positioning blocks 223 can be selected for different shapes of the first welding piece.

[0048] Further, as shown in the drawings, Figure 5 and Figure 6 The riveting mechanism 3 comprises a riveting support 31, a pushing cylinder 32 and a riveting assembly. The riveting support 31 is installed on the workbench 1. The pushing cylinder 32 is installed on the riveting support 31. The riveting assembly is connected with the output end of the pushing cylinder 32 and is used for preliminarily fixing the first welding piece on the second welding piece.

[0049] The riveting support 31 is used for supporting the pushing cylinder 32 and the riveting assembly. The riveting support 31 can elevate the pushing cylinder 32 and the riveting assembly, so as to avoid the interference between the relatively complex riveting assembly and the workbench 1. By pushing the riveting assembly to move through the pushing cylinder 32, the riveting assembly can not only receive the first welding piece conveyed by the feeding assembly 2, but also accurately convey the first welding piece to the corresponding position of the supporting piece 43.

[0050] Further, as shown in the drawings, Figure 5 and Figure 6 The riveting assembly comprises a cylinder fixing seat 331, a riveting cylinder 332 and a riveting jig 333. The cylinder fixing seat 331 is connected with the output end of the pushing cylinder 32. The riveting cylinder 332 is installed on the cylinder fixing seat 331 and the output end thereof faces upward. The riveting jig 333 is connected with the output end of the riveting cylinder 332. The riveting jig 333 is used for placing the first welding piece.

[0051] The cylinder fixing base 331 is connected with the output end of the pushing cylinder 32 through a cylinder joint, and the press-in cylinder 332 is installed at the end of the cylinder fixing base 331 away from the pushing cylinder 32, and the output end of the press-in cylinder 332 faces upward. The press-in jig 333 is installed at the output end of the press-in cylinder 332, and the press-in jig 333 is used for placing the first welding piece conveyed from the feeding assembly 2. When the output end of the pushing cylinder 32 is stretched and the first welding piece is conveyed to the position directly below the supporting piece 43, the output end of the press-in cylinder 332 is stretched, the press-in jig 333 is driven to move upward, and then the first welding piece on the press-in jig 333 is driven to move upward, so as to preliminarily fix the first welding piece on the second welding piece. For example, the temperature sensing tube 5 is inserted into the hole position of the tank body 6. The press-in assembly is thus arranged, so that the first welding piece can be preliminarily fixed on the second welding piece through the stretching of the output end of the press-in cylinder 332, and the press-in jig 333 can stably place the first welding piece.

[0052] Since the output end of the pushing cylinder 32 or the output end of the press-in cylinder 332 will generate a large force on the cylinder fixing base 331 during the stretching process, the feeding reinforcing rib 336 can be arranged on the cylinder fixing base 331, so as to increase the weight and structural strength of the cylinder fixing base 331 and improve the overall structural strength.

[0053] Further, as shown in Figures 5 to 7 The press-in assembly further comprises a limiting block 334 installed on the cylinder fixing base 331. The limiting block 334 is provided with a limiting cavity 3341, and the press-in jig 333 is slidably arranged in the limiting cavity 3341. The limiting block 334 has a character-shaped structure, and the area formed by the inner wall of the limiting block 334 is the limiting cavity 3341. The limiting block 334 is fixed on the cylinder fixing base 331 and located directly above the press-in cylinder 332. The press-in jig 333 is located in the limiting cavity 3341, and the output end of the press-in cylinder 332 can drive the press-in jig 333 to slide up and down in the limiting cavity 3341 when the output end of the press-in cylinder 332 is stretched. The limiting block 334 can limit the press-in jig 333 to move only in the vertical direction, so as to prevent the press-in jig 333 from deflecting in the horizontal direction during the movement, thereby ensuring that the first welding piece stably rises when preliminarily fixed on the second welding piece and accurately fixed on the corresponding position of the second welding piece.

[0054] Further, as shown in Figure 5 and Figure 6As shown, the press riveting assembly further comprises a positioning clamp 335 for positioning and fixing the first workpiece to be welded, which is installed on the cylinder fixing base 331. The press riveting jig 333 is used to support the first workpiece to be welded, and after being supported, the first workpiece to be welded needs to be moved under the action of the pushing cylinder 32 and the press riveting cylinder 332. In order to prevent the first workpiece to be welded from shaking or even falling during the movement, the positioning clamp 335 is arranged on the cylinder fixing base 331 to fix the first workpiece to be welded. Specifically, the positioning clamp 335 comprises a pneumatic clamp finger 3351, a left positioning clamp 3352 and a right positioning clamp 3353. The pneumatic clamp finger 3351 is installed on the cylinder fixing base 331, and the left positioning clamp 3352 and the right positioning clamp 3353 are respectively installed on the two clamp fingers of the pneumatic clamp finger 3351. The pneumatic clamp finger 3351 can control the left positioning clamp 3352 and the right positioning clamp 3353 to approach or move away from each other to clamp or release the first workpiece to be welded. After the feeding assembly 2 feeds the first workpiece to be welded onto the press riveting jig 333, the pneumatic clamp finger 3351 controls the left positioning clamp 3352 and the right positioning clamp 3353 to approach each other to clamp the first workpiece to be welded. When the press riveting cylinder 332 needs to preliminarily fix the first workpiece to be welded to the second workpiece to be welded, the left positioning clamp 3352 and the right positioning clamp 3353 move away from each other to release the first workpiece to be welded.

[0055] Further, as shown in Figure 5 and Figure 6 The press riveting mechanism 3 further comprises a pushing slide rail 34, a pushing slide block 35 and a buffer 36. The pushing slide rail 34 is installed on the press riveting support 31. The pushing slide block 35 is installed on the press riveting assembly and is slidably installed on the pushing slide rail 34. The press riveting support 31 is provided with the buffer 36 at both ends of the pushing slide rail 34. The buffer 36 is used to buffer the sliding of the press riveting assembly.

[0056] Two pushing slide rails 34 parallel to each other and spaced a certain distance apart are installed on the upper end face of the press riveting support 31. The pushing cylinder 32 is installed on the press riveting support 31 and located between the two pushing slide rails 34. The output end of the pushing cylinder 32 extends in the same direction as the length direction of the pushing slide rail 34. Four pushing slide blocks 35 are installed on the press riveting assembly. Each pushing slide rail 34 corresponds to two pushing slide blocks 35. The pushing slide block 35 is slidably installed on the pushing slide rail 34. When the output end of the pushing cylinder 32 extends, it can drive the press riveting assembly to slide on the pushing slide rail 34. The press riveting support 31 is provided with the buffer 36 at both ends of the pushing slide rail 34, which is used to buffer the sliding of the press riveting assembly. In this way, the movement of the press riveting assembly is smoother and more directional, and deviation is prevented. When the press riveting assembly moves to the limit position in two directions, the buffer 36 buffers, so that the movement of the press riveting assembly is more stable.

[0057] Further, as shown in Figure 8 and Figure 10As shown, the positioning and welding assembly 4 further comprises a hole positioning mechanism 44, which comprises a Z-axis sliding table cylinder 441, a Y-axis sliding table cylinder 442, a hole positioning sleeve 443, and a hole positioning rod 444. The Z-axis sliding table cylinder 441 is installed on the support bracket 41 and located at one side of the support 43. The Y-axis sliding table cylinder 442 is installed on the sliding seat of the Z-axis sliding table cylinder 441. The hole positioning sleeve 443 is connected with the sliding seat of the Y-axis sliding table cylinder 442. The hole positioning rod 444 is installed on the hole positioning sleeve 443.

[0058] The hole positioning mechanism 44 is used for positioning the second welding piece loaded on the support 43. The first welding piece is loaded from the rear side of the support bracket 41, and the second welding piece is loaded from the front side of the support bracket 41. Therefore, the support 43 is arranged at the front side of the support bracket 41, and the hole positioning mechanism 44 is also arranged at the front side of the support bracket 41. The hole positioning mechanism 44 further comprises a fixing member 445 installed on the support bracket 41. The Z-axis sliding table cylinder 441 is installed on the fixing member 445, and the sliding direction of the sliding seat thereof is vertical. The Y-axis sliding table cylinder 442 is installed on the sliding seat of the Z-axis sliding table cylinder 441, and the sliding direction of the sliding seat thereof is horizontal, which is the direction of approaching or moving away from the support 43. The hole positioning sleeve 443 is connected with the sliding seat of the Y-axis sliding table cylinder 442. The hole positioning rod 444 is installed on the hole positioning sleeve 443. When the Z-axis sliding table cylinder 441 operates, the hole positioning rod 444 can move in the vertical direction. When the Y-axis sliding table cylinder 442 operates, the hole positioning rod 444 can move in the horizontal direction. Under the action of the Z-axis sliding table cylinder 441 and the Y-axis sliding table cylinder 442, the hole positioning rod 444 can position the second welding piece on the support 43. For example, a positioning hole is formed on the second welding piece. When the positioning rod can be inserted into the positioning hole, it indicates that the second welding piece is accurately positioned. Or as mentioned above, the hole position of the tank body 6 is formed. When the positioning rod can be inserted into the hole position of the tank body 6, it indicates that the tank body 6 is accurately positioned. Therefore, the subsequent temperature sensing tube can be accurately inserted into the hole position. By arranging the hole positioning mechanism, the accurate positioning of the second welding piece can be realized, and the subsequent preliminary fixation of the first welding piece on the second welding piece is facilitated.

[0059] Further, as shown in Figure 8 , Figures 11 to 13 The positioning and welding assembly 4 further comprises a pressing mechanism 45, which comprises a pressing cylinder 451, a pressing block 452, and a press-in limiting block 453. The pressing cylinder 451 is installed on the support bracket 41. The pressing block 452 is installed on the output end of the pressing cylinder 451 and located directly above the support 43. The press-in limiting block 453 is installed on the pressing block 452 and is provided with a through hole 4531 for the first welding piece to pass through.

[0060] The pressing mechanism 45 is used for pressing and fixing the second welding piece loaded on the support 43. The pressing mechanism 45 further comprises a fixed plate 454 installed on the support bracket 41, a pressing cylinder 451 installed on the fixed plate 454 and located directly above the support 43, an output end of the pressing cylinder 451 downward, a pressing block 452 installed on the output end of the pressing cylinder 451 and used for pressing the second welding piece, and a pressing rivet limiting block 453 installed on the pressing block 452 and used for limiting the first welding piece when the first welding piece is preliminarily fixed on the second welding piece, so that a through hole 4531 is formed on the pressing rivet limiting block 453 and used for the first welding piece to pass through. The pressing mechanism 45 can further fix the second welding piece, prevent the second welding piece from being deviated after being loaded on the support 43, and affect the preliminary fixation of the first welding piece on the second welding piece.

[0061] Further, as shown in Figure 12 and Figure 13 , the pressing mechanism 45 further comprises a flattening cylinder 455 and a telescopic block 456, the flattening cylinder 455 is installed on the pressing block 452, and the telescopic block 456 is installed on an output end of the flattening cylinder 455 and is provided with a through hole 4561 for the first welding piece to pass through.

[0062] The flattening cylinder 455 and the telescopic block 456 are used to flatten the first welding part after the first welding part is preliminarily fixed on the second welding part, so that the end of the first welding part is as flush as possible to the welding position of the second welding part. The lower end surface of the lower pressing block 452 is provided with a recess, the flattening cylinder 455 is installed in the recess, and the output end faces the rivet pressing limiting block 453, and the telescopic block 456 is installed on the output end of the flattening cylinder 455; when the output end of the flattening cylinder 455 telescopes, the telescopic block 456 can slide directly below the rivet pressing limiting block 453. When the first welding part is preliminarily fixed on the second welding part, the output end of the flattening cylinder 455 is retracted, so that the through hole 4561 is directly opposite the through hole 4531, and therefore the first welding part can be inserted upward on the second welding part; then the output end of the lower pressing cylinder 451 is retracted, and the lower pressing block 452, the rivet pressing limiting block 453, the flattening cylinder 455 and the telescopic block 456 are driven to rise synchronously; then the output end of the flattening cylinder 455 is extended, so that the through hole 4561 on the telescopic block is dislocated with the through hole 4531, and the other parts of the telescopic block block the through hole 4531 from below; then the output end of the lower pressing cylinder 451 is extended, and the lower pressing block 452, the rivet pressing limiting block 453, the flattening cylinder 455 and the telescopic block 456 are driven to descend synchronously, and when the telescopic block reaches a certain position, the telescopic block abuts against the upper end surface of the first welding part and presses the first welding part downward, so that the upper end surface of the first welding part is flush with the welding position of the second welding part. The lower pressing mechanism 45 is thus arranged, so that the flattening function and the pressing function are combined together, the overall structure is relatively simple and reasonable, and the machining parts are more suitable.

[0063] As shown in Figure 8 and Figure 14 , the positioning and welding assembly 4 further comprises a photoelectric switch mechanism 46, the photoelectric switch mechanism 46 comprises a photoelectric support 461 and a diffuse reflection photoelectric switch 462, the photoelectric support 461 is installed on the support support 41 and located on one side of the support 43, and the diffuse reflection photoelectric switch 462 is installed on the photoelectric support 461.

[0064] Further, as shown in Figure 8 and Figure 9 , the welding mechanism 42 comprises a Y-axis moving device 421, a Y-axis fixed frame 422, a Z-axis moving device 423 and a welding head 424, the Y-axis moving device 421 is installed on the support support 41, the Y-axis fixed frame 422 is installed on the output end of the Y-axis moving device 421, the Z-axis moving device 423 is installed on the Y-axis fixed frame 422, and the welding head 424 is installed on the output end of the Z-axis moving device 423.

[0065] The Y-axis moving device 421 is installed on the support bracket 41 and is used to drive the welding head 424 to move in the Y-axis direction (close to or away from the support 43), and the Y-axis moving device 421 can adopt a screw sliding table; the Z-axis moving device 423 is installed on the Y-axis fixing frame 422 and is used to drive the welding head 424 to move in the vertical direction, and the Z-axis moving device 423 can be a device composed of a motor, a screw, a sliding block and a guide rail, and the specific working principle is not described here; the welding head 424 is installed at the output end of the Z-axis moving device 423 and is used to weld the connecting part of the first and second workpieces, and the welding head 424 is specifically a galvanometer welding head 424. The galvanometer is an excellent vector scanning device, which is a special oscillating motor. The basic principle is that the current coil generates torque in the magnetic field, but unlike the rotating motor, a restoring torque is added to the rotor by mechanical torsional spring or electronic method, and the size is proportional to the angle of the rotor deviating from the balance position; the galvanometer welding head 424 specifically refers to a welding head 424 with a driving motor inside, and the light emitted can draw a circle. The welding head 424 can flexibly adjust the position, facilitate the feeding and discharging of the second workpiece, and can weld different workpieces.

[0066] As shown in Figure 1 and Figure 2 , two feeding assemblies 2, two riveting mechanisms 3 and a support bracket 41 are arranged on the workbench 1, the support bracket 41 is provided with a welding mechanism 42, two supports 43, two hole positioning mechanisms 44, two pressing mechanisms 45 and two photoelectric switch mechanisms 46. Before welding, the first workpiece needs to be fed, the second workpiece needs to be fed, and the preliminary fixing, flattening and other actions are needed, so the time consumed by the preliminary preparation action is generally greater than the time consumed by the welding; in order to improve the production efficiency, two feeding assemblies 2 and two riveting mechanisms 3 are arranged on the workbench 1, and two supports 43, two hole positioning mechanisms, two pressing assemblies and two photoelectric switch mechanisms 46 are arranged on the support bracket 41, and they cooperate with each other to form two groups of workstations responsible for feeding, preliminary fixing, flattening and other actions, so that one welding mechanism 42 is responsible for welding of two workstations, and one of them works to preliminarily fix the first workpiece on the second workpiece, and the welding mechanism 42 can weld and fix the first workpiece and the second workpiece of the other workstation.

[0067] Taking the welding and fixing of the temperature sensing tube 5 (as shown in Figure 15 ) on the tank body 6 as an example, the tank body 6 is a tank body 6 used on a water dispenser, and the temperature sensing tube 5 needs to be welded on the tank body 6 during use; as shown in Figure 16As shown, the tank body 6 is a hollow cylindrical structure with one end open, and a welding hole 61 is formed in the side wall thereof. The temperature sensing tube 5 is placed in the tank body 6, and one end of the temperature sensing tube 5 is inserted into the welding hole 61. Finally, the welding hole 61 is welded by the welding head 424 to fix the temperature sensing tube 5 on the tank body 6.The specific processing process is as follows: the feeding mechanism (such as a mechanical hand) feeds the can body 6 from the previous work station or rack to the supporting piece 43; the cross section of the supporting piece 43 is an arc structure, the arc of which is matched with the arc of the side wall of the can body 6; the opening of the can body 6 faces the supporting piece 43 and is sleeved on the supporting piece 43; the upper end surface of the supporting piece 43 abuts against the inner side wall of the can body 6, but does not block the welding hole 61; the hole positioning mechanism positions the can body 6; the Y-axis sliding table cylinder 442 drives the hole positioning rod 444 to move to the upper side of the can body 6; the Z-axis sliding table cylinder 441 drives the hole positioning rod 444 to move downward; the hole positioning rod 444 moves downward and passes through the through hole 4531 of the riveting limiting block 453; when the hole positioning rod 444 can be inserted into the welding hole 61, the positioning of the can body 6 is completed; after positioning, the hole positioning rod 444 returns to the initial position; then, the output end of the pressing cylinder 451 is stretched, driving the pressing block 452 and the riveting limiting block 453 to descend and press on the can body 6; at this time, the through hole 4531 on the riveting limiting block 453 is opposite to the welding hole 61; during the feeding, hole positioning and pressing of the can body 6, the feeding assembly 2 synchronously feeds the temperature sensing tube 5; the vibration disc 21 outputs and conveys the temperature sensing tube 5 to the feeding positioning block 223 through vibration; the sliding seat of the feeding sliding table cylinder 222 moves to the feeding clamp sending mechanism 23; the rotary output end of the rotary cylinder 232 rotates and drives the feeding clamp 235 to rotate to the upper side of the temperature sensing tube 5; when the left feeding claw 2352 and the right feeding claw 2353 are located at the two sides of the temperature sensing tube 5, the two fingers of the pneumatic finger 2351 are retracted to clamp the temperature sensing tube 5; the output end of the clamping cylinder is stretched; the rotary output end of the rotary cylinder 232 rotates and drives the temperature sensing tube 5 to rotate to the upper side of the riveting jig 333; the output end of the clamping cylinder is retracted, and the temperature sensing tube 5 is fed to the riveting jig 333; then the positioning clamp 335 clamps the temperature sensing tube 5 on the riveting jig 333; the output end of the pushing cylinder 32 is stretched, driving the temperature sensing tube 5 to move into the can body 6 and be located below the welding hole 61; the output end of the riveting cylinder 332 is stretched, driving the temperature sensing tube 5 to move upward and be inserted into the welding hole 61; the output end of the pressing cylinder 451 is retracted, the output end of the flattening cylinder 455 is stretched, the through hole 4561 on the telescopic block is misaligned with the through hole 4531, and the output end of the pressing cylinder 451 is stretched to make the telescopic block strike the upper end of the temperature sensing tube 5 from top to bottom, so that the temperature sensing tube 5 is inserted into the welding hole 61 while the upper end is flush with the side wall of the can body 6; the welding head 424 moves to a specific position under the action of the Y-axis moving device 421 and the Z-axis moving device 423, the welding head 424 welds at the welding hole 61, and finally the temperature sensing tube 5 is welded and fixed on the can body 6; after welding, the discharging mechanism (such as a mechanical hand) discharges the welded workpiece to the next work station.

[0068] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural changes made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. Welding equipment, characterized in that, Used for welding a first workpiece to be welded to a second workpiece to be welded, the welding equipment comprises a workbench (1) and a feeding assembly (2), a riveting mechanism (3) and a positioning welding assembly (4) arranged on the workbench (1); the positioning welding assembly (4) comprises a support bracket (41), a welding mechanism (42), a support member (43) and a pressing mechanism (45), the support bracket (41) is mounted on the workbench (1), the welding mechanism (42) and the support member (43) are both mounted on the support bracket (41), and the support member (43) is used to support the second workpiece to be welded; the feeding assembly (2) is used to transport the first workpiece to be welded to the riveting mechanism (3), and the riveting mechanism (3) is used to preliminarily fix the first workpiece to be welded to the second workpiece to be welded; The pressing mechanism (45) comprises a pressing cylinder (451), a pressing block (452), a riveting limit block (453), a leveling cylinder (455) and a telescopic block (456), wherein the pressing cylinder (451) is mounted on the support bracket (41), the pressing block (452) is mounted at the output end of the pressing cylinder (451) and is located directly above the support member (43), the riveting limit block (453) is mounted on the pressing block (452) and is provided with a through hole (4531) for the first workpiece to be welded to pass through, the leveling cylinder (455) is mounted on the pressing block (452), the telescopic block (456) is mounted at the output end of the leveling cylinder (455), and the telescopic block (456) is provided with a through hole (4561) for the first workpiece to be welded to pass through.

2. The welding equipment according to claim 1, characterized in that The feeding assembly (2) comprises a vibration plate (21), a feeding transfer mechanism (22) and a feeding clamping mechanism (23) mounted on the workbench (1); the feeding transfer mechanism (22) is located between the vibration plate (21) and the feeding clamping mechanism (23); the vibration plate (21) is used to sequentially load the first workpiece to be welded onto the feeding transfer mechanism (22); and the feeding clamping mechanism (23) is used to clamp the first workpiece to be welded on the feeding transfer mechanism (22) and load it onto the riveting mechanism (3).

3. The welding equipment according to claim 2, characterized in that The feeding and clamping mechanism (23) comprises a feeding support frame (231), a rotating cylinder (232), a feeding bracket (233), a clamping and lifting cylinder (234) and a feeding clamp (235), wherein the feeding support frame (231) is located on one side of the riveting mechanism (3), the rotating cylinder (232) is mounted on the feeding support frame (231), the feeding bracket (233) is mounted on the rotating output end of the rotating cylinder (232), the clamping and lifting cylinder (234) is mounted on the feeding bracket (233), and the feeding clamp (235) is mounted on the output end of the clamping and lifting cylinder (234).

4. The welding equipment according to claim 2, characterized in that The feeding transfer mechanism (22) comprises a feeding fixed frame (221), a feeding slide cylinder (222) and a feeding positioning block (223); the feeding fixed frame (221) is mounted on the workbench (1); the feeding slide cylinder (222) is mounted on the feeding fixed frame (221); and the feeding positioning block (223) is mounted on a sliding seat of the feeding slide cylinder (222) and is used to place a first workpiece to be welded.

5. The welding equipment according to claim 1, characterized in that The pressure riveting mechanism (3) comprises a pressure riveting bracket (31), a pushing cylinder (32) and a pressure riveting assembly, wherein the pressure riveting bracket (31) is mounted on the workbench (1), the pushing cylinder (32) is mounted on the pressure riveting bracket (31), and the pressure riveting assembly is connected to the output end of the pushing cylinder (32) and is used to preliminarily fix the first workpiece to be welded on the second workpiece to be welded.

6. The welding device according to claim 5, characterized in that The pressure riveting assembly comprises a cylinder fixing seat (331), a pressure riveting cylinder (332) and a pressure riveting jig (333); the cylinder fixing seat (331) is connected to the output end of the push cylinder (32); the pressure riveting cylinder (332) is mounted on the cylinder fixing seat (331) with the output end facing upward; the pressure riveting jig (333) is connected to the output end of the pressure riveting cylinder (332); and the pressure riveting jig (333) is used to place a first workpiece to be welded.

7. The welding device according to claim 6, characterized in that The pressure riveting assembly further comprises a limit block (334) mounted on the cylinder fixing seat (331), the limit block (334) defining a limit cavity (3341), and the pressure riveting jig (333) being slidably embedded in the limit cavity (3341).

8. The welding device according to claim 6, characterized in that The pressure riveting assembly further comprises a positioning fixture (335) for positioning and fixing the first workpiece to be welded, and the positioning fixture (335) is mounted on the cylinder fixing seat (331).

9. The welding device according to claim 5, characterized in that The press riveting mechanism (3) further comprises a push rail (34), a push slider (35) and a buffer (36), wherein the push rail (34) is mounted on the press riveting bracket (31), the push slider (35) is mounted on the press riveting assembly and is slidably mounted on the push rail (34), and the press riveting bracket (31) is provided with the buffer (36) at both ends of the push rail (34), and the buffer (36) is used to buffer the sliding of the press riveting assembly.

10. The welding device according to claim 1, characterized in that The positioning welding assembly (4) also includes a hole positioning mechanism (44), and the hole positioning mechanism (44) includes a Z-axis slide cylinder (441), a Y-axis slide cylinder (442), a hole positioning sleeve (443) and a hole positioning rod (444), wherein the Z-axis slide cylinder (441) is mounted on the support bracket (41) and is located on one side of the support member (43), the Y-axis slide cylinder (442) is mounted on the sliding seat of the Z-axis slide cylinder (441), the hole positioning sleeve (443) is connected to the sliding seat of the Y-axis slide cylinder (442), and the hole positioning rod (444) is mounted on the hole positioning sleeve (443).

11. The welding device according to claim 1, characterized in that The welding mechanism (42) comprises a Y-axis moving device (421), a Y-axis fixing frame (422), a Z-axis moving device (423) and a welding head (424), wherein the Y-axis moving device (421) is mounted on the supporting bracket (41), the Y-axis fixing frame (422) is mounted on the output end of the Y-axis moving device (421), the Z-axis moving device (423) is mounted on the Y-axis fixing frame (422), and the welding head (424) is mounted on the output end of the Z-axis moving device (423).

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