A bending mechanism and a bending welding machine

Abstract

The utility model belongs to casing processing technical field especially, it relates to a kind of bending mechanism and bending welding machine, focus on solving the problem that miniaturization lock catch casing machining precision is not high, first lock catch piece body is conveyed to the receiving groove, upper top assembly passes through bending groove from top to bottom and is abutted in the top of receiving groove to lock catch casing, lower top assembly is followed by passing through receiving groove from bottom to top, and is abutted in the lower side of the connecting portion of lock catch casing, preliminary positioning is completed by upper and lower combination.Lock catch piece body and upper top assembly are moved as a whole by lower top assembly upward push, the connecting portion of lock catch piece body is bent under its limit after passing through bending groove, two arc-shaped pieces are pasted towards opposite direction, accurate half bending is completed, and machining precision is improved.Just by the composite motion of translation, clamping, rotation, the lock catch casing after bending can be accurately positioned to welding station, the linkage design of welding mechanism and bending mechanism realizes continuous processing, finally flows out through output mechanism, and improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of shell processing technology, and in particular relates to a bending mechanism and a bending and welding machine. Background Technology

[0002] In the jewelry manufacturing industry, the clasp housing, as a key component connecting jewelry, directly affects the performance and aesthetics of the jewelry due to its processing precision. Traditional clasp housing processing employs a step-by-step production process: first, stamping; then, manual bending; and finally, welding using handheld welding equipment. This production method has significant drawbacks: it's difficult to standardize the bending angle manually, the process is cumbersome, and manual operation easily scratches the surface of the hardware, affecting the product yield.

[0003] While some automated bending equipment exists in the existing technology, they are generally complex in structure, unable to meet the miniaturization requirements of jewelry clasps, and lack linkage with the welding process, making it difficult to meet the dual requirements of precision and efficiency in modern jewelry production. Utility Model Content

[0004] The purpose of this utility model is to provide a bending mechanism and a bending welding machine, which aims to solve the technical problems of low bending efficiency and precision in the prior art, and the inability to link with the welding process.

[0005] To achieve the above objectives, this utility model provides a bending mechanism for processing a latching plate into a latching shell. The mechanism includes a bending table, an upper lifting assembly above the bending table, and a lower lifting assembly below the bending table. The bending table has at least two bending arms, with a bending groove formed between the two arms. Below the bending groove is a receiving platform for receiving the latching plate, and the receiving platform has a receiving groove. The openings of the bending groove and the receiving groove are opposite and communicate with each other. The upper lifting assembly can pass downward through the bending groove to abut the latching plate against the receiving platform. The lower lifting assembly passes upward through the receiving groove and lifts the latching plate and the upper lifting assembly upward together, causing the latching plate to bend under the action of the bending arms.

[0006] Furthermore, the receiving groove is adjacent to an opening groove in the direction near the bending table, and the lower top assembly is also connected to a connecting rod. The lower top assembly passes through the receiving groove upwards, driving the connecting rod to pass through the opening groove upwards, so as to bend the locking piece in half after passing through the bending groove.

[0007] Furthermore, the bending arm is an inclined surface, and a bending space is formed below it. The bending arm gradually narrows towards the bending groove to form a guide surface.

[0008] A bending and welding machine includes a bending mechanism and a machine base. The machine base is provided with a feeding mechanism, a clamping and rotating mechanism, a welding mechanism for welding the edge of the locking housing, and an output mechanism.

[0009] Furthermore, the clamping and rotating mechanism includes a clamping assembly, a rotating assembly, and a translation assembly. The translation assembly includes a translation motor, a first screw, a first base A, and a first base B. The translation motor is mounted on the machine base, and the drive end of the translation motor is connected to the first screw. The first base A and the first base B are respectively mounted on the front and rear ends of the first screw. A first nut seat is movably connected to the first screw, and a first platform is connected above the first nut seat. The machine base is provided with two parallel first slide rails, and the first platform is slidably connected to the first slide rails through a first slider.

[0010] Furthermore, the clamping assembly is set into two groups, respectively located on both sides of the first platform; the clamping assembly includes a clamping motor, a second screw, a second base A and a second base B. The clamping motor is mounted on the first platform, the drive end of the translation motor is connected to the second screw, the second base A and the second base B are respectively mounted on the front and rear ends of the second screw, the second nut seat is movably connected to the second screw, and the second platform is connected above the second nut seat.

[0011] Furthermore, the rotating assembly is mounted on the second platform, which is equipped with a fixed base. The rotating assembly includes a rotating motor, a connecting sleeve, and a rotating shaft. The rotating shaft passes through the fixed base, and the connecting sleeve, which rotates synchronously with the rotating shaft, is fitted on the outer wall of the rotating shaft. The drive end of the rotating motor drives the connecting sleeve to drive the rotating shaft to rotate.

[0012] Furthermore, a positioning component is provided on one side of the second platform, including a positioning cylinder and a positioning pin. The positioning cylinder is located on one side of the second platform, and its drive end is connected to the positioning pin. The positioning pin axially passes through the center end of the rotating shaft and passes through the fixed locking housing.

[0013] Furthermore, the feeding mechanism includes a vibratory feeder, a vibratory channel, and a pushing assembly. The pushing assembly includes a pushing cylinder and a pushing component connected thereto. The vibratory feeder, located on one side of the machine, is connected to one end of the vibratory channel, and its other end is vertically connected to the receiving platform. The pushing cylinder is located on the vibratory channel, and its connecting end points towards the receiving platform. Under the drive of the pushing cylinder, the pushing component pushes the lock housing to be processed into the receiving groove.

[0014] Furthermore, a three-axis drive mechanism is provided on one side of the machine, including an X-axis moving unit, a Y-axis moving unit, and a Z-axis moving unit. The drive end of the previous unit is connected to the next component to form a motion transmission chain. The Z-axis moving unit is movably connected to a top plate, and a welding mechanism is provided on the top plate. The welding mechanism is connected to the top component parallel to the side close to the bending mechanism.

[0015] The bending and welding machine provided in this embodiment of the present invention has at least one of the following technical effects:

[0016] 1. This bending mechanism primarily addresses the issue of low machining accuracy in miniaturized latch housings. First, the latch piece is conveyed to the receiving groove. The upper push assembly passes through the bending groove from top to bottom, abutting the latch housing against the top of the receiving groove. The lower push assembly then passes through the receiving groove from bottom to top, abutting against the lower part of the latch housing's connecting section. This initial positioning is achieved through the upper and lower components working together. The lower push assembly pushes the latch piece and the upper push assembly upwards as a whole, preventing the latch housing from tilting or falling. After passing through the bending groove, the connecting section of the latch piece bends under its limiting condition, causing the two arc-shaped parts to fit together in opposite directions, completing a precise half-bend and improving machining accuracy.

[0017] 2. The clamping and rotating mechanism uses a combination of translation, clamping, and rotation to precisely position the bent locking housing at the welding station. The linkage design between the welding mechanism and the bending mechanism enables continuous processing, and the housing finally flows out through the output mechanism, improving production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A diagram showing the front and rear bending changes of the locking housing provided in an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the overall structure of the bending and welding machine provided in this embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the welding mechanism and feeding mechanism of the bending and welding machine provided in the embodiment of this utility model;

[0022] Figure 4 A schematic diagram of the bending table of the bending mechanism provided in an embodiment of this utility model;

[0023] Figure 5 A schematic diagram of the bending mechanism provided in this embodiment of the utility model before bending. Figure 1 ;

[0024] Figure 6 A schematic diagram of the bending mechanism provided in this embodiment of the utility model after bending. Figure 2 ;

[0025] Figure 7 A schematic diagram of the rotating assembly and clamping assembly of the bending and welding machine provided in an embodiment of this utility model;

[0026] Figure 8 A schematic diagram of the translation component of the bending and welding machine provided in an embodiment of this utility model;

[0027] Figure 9 This is a schematic diagram of the positioning component of the bending and welding machine provided in an embodiment of the present invention.

[0028] The following are the labeling elements in the figure:

[0029] 100. Machine base; 110. Lock housing; 111. Lock plate; 120. Connecting part; 130. Arc-shaped part; 140. Through port;

[0030] 200. Feeding mechanism; 210. Vibratory feeder; 220. Vibration channel; 230. Pushing assembly; 231. Pushing cylinder; 232. Pushing component;

[0031] 300. Bending mechanism; 310. Bending table; 311. Bending arm; 312. Bending groove; 313. Receiving groove; 314. Opening groove; 315. Connecting rod; 320. Upper support assembly; 330. Lower support assembly; 340. Receiving platform;

[0032] 400. Clamping and rotating mechanism; 410. Clamping assembly; 411. Clamping motor; 412. Second screw; 413. Second base A; 414. Second base B; 415. Second platform; 420. Rotating assembly; 421. Fixed base; 422. Rotating motor; 423. Connecting sleeve; 424. Rotating shaft; 430. Translation assembly; 431. Translation motor; 432. First screw; 433. First base A; 434. First base B; 435. First slide rail; 436. First slider; 437. First platform; 438. First nut seat; 440. Positioning assembly; 441. Positioning cylinder; 442. Positioning pin;

[0033] 500. Welding mechanism;

[0034] 600. Three-axis drive mechanism; 610. X-axis moving unit; 620. Y-axis moving unit; 630. Z-axis moving unit; 631. Top extension plate;

[0035] 700, Output mechanism; 710, First output channel; 720, Second output channel. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-9, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-9 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0040] like Figure 1 As shown, the locking housing to be processed by this bending and welding machine is a small part, with a size of approximately 10cm or less. The locking housing includes two mirror-connected arc-shaped parts 130, each arc-shaped part 130 having a through opening 140 formed by the enclosure. The connection point of the two arc-shaped parts 130 forms a bendable connecting part 120; after bending, the connecting part is bent downwards, and the two arc-shaped parts 130 are fitted together in opposite directions.

[0041] In one embodiment of this utility model, such as Figure 4 , 5As shown in Figure 6, a bending mechanism is provided for processing a latching plate into a latching housing. The mechanism includes a bending table 310, an upper support assembly 320 above the bending table 310, and a lower support assembly 330 below the bending table 310. The bending table 310 has at least two bending arms 311, with a bending groove 312 formed between the two bending arms 311. Below the bending groove 312, a receiving platform 340 for receiving the latching plate is provided. The receiving platform 340 has a receiving groove 312, and the openings of the bending groove 312 and the receiving groove 313 are opposite to and communicate with each other. An opening groove 314 is also adjacent to the receiving groove 313 in the direction near the bending table 310. The opening groove 314 is vertically below the bending groove 312, and a connecting rod 315 directly connected to the lower support assembly 330 is also provided within the opening groove 314. First, the diameter of the latching plate is larger than the diameter of the receiving groove 313, allowing the latching plate to be positioned on the receiving groove 313. The upper push assembly 320 passes downward through the bending groove 312, abutting the latching plate against the receiving groove 313. Next, the lower push assembly 330 passes upward through the receiving groove 313, and the connecting rod 315 simultaneously passes upward through the opening groove 314, abutting below the connecting part 120 of the latching housing. This combination completes the initial positioning. The upper push assembly 320 and lower push assembly 330 are preferably driven by cylinders. After initial positioning, the solenoid valve of the upper push assembly controls the cylinder to release air, allowing the upper push assembly 320 to move freely up and down. It is continuously limited by its own weight, causing the connecting rod 315 to push the latching plate and the upper push assembly 330 upward as a whole. The latching plate will not tilt or fall off. Figure 5 , 6 As shown, the connecting part 120 of the latch piece is bent under its limit after passing through the bending groove, and the two arc-shaped parts 130 are attached to each other in opposite directions to complete the precise half-bending and form the latch housing.

[0042] Whether the drive end of the lower top component 330 directly bends the lock shell plate, or the drive end of the lower top component connects to the connecting rod 315 to indirectly bend the lock shell plate, the corresponding effect can be achieved.

[0043] like Figure 4 As shown, bending arms 317 are formed on both sides of the bending groove 312, and a bending space is formed below the bending arms 317. The two bending arms 317 of the bending space are used to abut and bend the lock housing. Preferably, the two side walls are inclined surfaces, and the inclined surfaces gradually shrink towards the bending groove 312 to form a guide surface, so as to realize the bending of the lock piece along the inclined surface.

[0044] In the second embodiment, a bending and welding machine is disclosed, including a bending mechanism 300 and a machine base 100. The machine base 100 is provided with a feeding mechanism 200, a clamping and rotating mechanism 400, a welding mechanism 500 for welding the edge of the locking housing, and an output mechanism 700.

[0045] like Figure 7 , 8 As shown, the clamping and rotating mechanism 400 includes a clamping assembly 410, a rotating assembly 420, and a translation assembly 430. The translation assembly 430 is mounted on the machine base 100. The translation assembly 430 includes a translation motor 431, a first screw 432, a first base A 433, and a first base B 434. The translation motor 431 is mounted on the machine base 100, and its drive end is connected to the first screw 432. The first base A 433 and the first base B 434 are respectively mounted on the front and rear ends of the first screw 432. A first nut seat 438 is movably connected to the first screw 432, and a first platform 437 is connected above the first nut seat 438. Specifically, the machine base 100 has two parallel first slide rails 435, and the first platform 437 is slidably connected to the first slide rails 435 via a first slider 436. This structure ensures translation accuracy through screw drive to deliver the clamping assembly 410 and the rotating assembly 420 to the execution position.

[0046] like Figure 7 As shown, the clamping assembly 410 is configured in two sets, respectively located on both sides of the first platform 437. Each clamping assembly 410 includes a clamping motor 411, a second screw 412, a second base A 413, and a second base B 414. The clamping motor 411 is mounted on the first platform 437. The drive end of the translation motor 431 is connected to the second screw 412. The second base A 413 and the second base B 414 are respectively mounted on the front and rear ends of the second screw 412. A second nut seat is movably connected to the second screw 412, and a second platform 415 is connected above the second nut seat. Specifically, the translation assembly 430 drives the clamping assembly 410 to move longitudinally toward the locking housing 110. The clamping motor 411 drives the second screw 412 to rotate, causing the second nut seat and the second platform 415 to move laterally, so that the clamping assemblies 410 on both sides simultaneously clamp the locking housing and move the locking housing out of the connecting rod 315.

[0047] like Figure 7As shown, the rotating assembly 420 is mounted on the second platform 415, which has a fixed base 421. The rotating assembly 420 includes a rotating motor 422, a connecting sleeve 423, and a rotating shaft 424. The rotating shaft 424 passes through the fixed base 421, and the connecting sleeve 423, which rotates synchronously with the rotating shaft 424, is fitted on the outer wall of the rotating shaft 424. The driving end of the rotating motor 422 drives the connecting sleeve 423 to drive the rotating shaft 424 to rotate. Specifically, the cross-sectional shape of the rotating shaft 424 is adapted to the locking housing 110. The rotating motor 422 drives the rotating shaft 424 to rotate through the connecting sleeve 423, thereby causing the locking housing 110 fixed thereon to adjust its angle, which facilitates multi-directional welding. The design of the rotating shaft 424 allows the angle of the bent locking housing 110 to be adjusted, ensuring uniform weld coverage. The connecting sleeve 423 rotates synchronously with the rotating shaft 424 to avoid slippage and improve rotational accuracy.

[0048] like Figure 3 As shown, a three-axis drive mechanism 600 is also provided on one side of the machine tool 100, including an X-axis movement unit 610, a Y-axis movement unit 620, and a Z-axis movement unit 630, wherein the drive end of the previous stage unit is connected to the next stage component to form a motion transmission chain. The X-axis movement unit 610, the Y-axis movement unit 620, and the Z-axis movement unit 630 can be a linear motor drive module or a manual rotary adjustment module. The Z-axis movement unit 630 is movably connected to a top plate 631, and a welding mechanism 500 is provided on the top plate 631; the welding mechanism 500 is preferably a laser welding machine, and the welding machine is connected to the top component 320 parallel to the side near the bending mechanism 300. The three-axis drive mechanism 600 controls the movement of the welding mechanism 500 in the X / Y / Z directions, and the top plate 631 fine-tunes the position of the welding head to accurately align it with the weld seam and improve the welding quality.

[0049] like Figure 3 As shown, the feeding mechanism 200 is mounted on the machine base 100. The feeding mechanism 200 includes a vibratory plate 210, a vibration channel 220, and a pushing assembly 230. The pushing assembly 230 includes a pushing cylinder 231 and a pushing member 232 connected thereto. The vibratory plate 210, mounted on one side of the machine base 100, is connected to one end of the vibration channel 220, and its other end is vertically connected to the receiving platform 340. The pushing cylinder 231 is mounted on the vibration channel 220, and its connecting end points towards the receiving platform 340. The pushing member 232 pushes the locking plate to the opening slot 314 under the drive of the pushing cylinder 231.

[0050] like Figure 7 As shown, the output mechanism 700 is mounted on the machine base 100 and includes a first output channel 710 and a second output channel 720 on one side relative to the receiving platform 340. The first output channel 710 and the second output channel 720 are connected end to end for outputting the processed locking housing.

[0051] like Figure 9 As shown, a positioning assembly 440 is further provided on one side of the second platform 415, including a positioning cylinder 441 and a positioning pin 442. The positioning cylinder 441 is located on one side of the second platform 415, and its driving end is connected to the positioning pin 442. The positioning pin 442 axially passes through the center end of the rotating shaft 424 and through the through-hole 140 of the locking housing 110. Specifically, before the clamping assembly 410 is activated, the positioning cylinder 441 drives the positioning pin 442 to pass through the center of the rotating shaft 424 and insert it into the two through-holes 140 of the folded locking housing to fix the position of the locking housing. Then, the clamping action is performed, which ensures that the locking housing does not deflect during clamping and improves accuracy.

[0052] Operation Flow: During equipment operation, the feeding mechanism 200 conveys the locking piece to the bending station; the upper lifting component 320 presses down to firmly press the locking housing 110 against the receiving table 340. The upper lifting component 320 and lower lifting component 330 are preferably driven by cylinders. After initial positioning, the solenoid valve of the upper lifting component 320 controls the cylinder to release air, allowing the upper lifting component 320 to move freely up and down, continuously positioning itself solely by its own weight; the lower lifting component 330 rises, pushing the workpiece upwards together with the upper lifting component 320. Under the guidance of the bending table 310, the locking housing completes a precise half-bend. The clamping component 410 of the clamping and rotating mechanism 400 clamps the bent part, and the translation component 430 moves it to the welding station. The rotating component 420 adjusts the workpiece angle according to welding requirements; the welding mechanism 500 automatically welds the bent edges; the processed locking housing is then sent out by the output mechanism 700. This fully automated processing avoids surface damage caused by manual contact and improves production efficiency.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bending mechanism, characterized in that, A device for processing a latching plate into a latching housing includes a bending table, an upper lifting assembly above the bending table, and a lower lifting assembly below the bending table. The bending table has at least two bending arms, with a bending groove formed between the two bending arms. Below the bending groove is a receiving platform for receiving the latching plate, and the receiving platform has a receiving groove. The openings of the bending groove and the receiving groove are opposite to and communicate with each other. The upper lifting assembly can pass downward through the bending groove to abut the latching plate against the receiving platform. The lower lifting assembly passes upward through the receiving groove and lifts the latching plate and the upper lifting assembly upward together, causing the latching plate to bend under the action of the bending arms.

2. The bending mechanism according to claim 1, characterized in that, The receiving groove is also adjacent to an opening groove in the direction near the bending table. The lower push assembly is also connected to a connecting rod. The lower push assembly passes through the receiving groove upwards, driving the connecting rod to pass through the opening groove upwards, so as to bend the locking piece in half after passing through the bending groove.

3. The bending mechanism according to claim 1, characterized in that, The bending arm is an inclined surface, and a bending space is formed below it. The bending arm gradually shrinks towards the bending groove to form a guide surface.

4. A bending and welding machine, comprising a bending mechanism as described in any one of claims 1-3, characterized in that, It also includes a machine base, which is equipped with a feeding mechanism, a clamping and rotating mechanism, a welding mechanism for welding the edge of the locking housing, and an output mechanism.

5. The bending and welding machine according to claim 4, characterized in that, The clamping and rotating mechanism includes a clamping assembly, a rotating assembly, and a translation assembly. The translation assembly includes a translation motor, a first screw, a first base A, and a first base B. The translation motor is mounted on the machine base, and its drive end is connected to the first screw. The first base A and the first base B are respectively mounted on the front and rear ends of the first screw. A first nut seat is movably connected to the first screw, and a first platform is connected above the first nut seat. The machine base is provided with two parallel first slide rails, and the first platform is slidably connected to the first slide rails via a first slider.

6. The bending and welding machine according to claim 5, characterized in that, The clamping assembly is configured in two sets, respectively located on both sides of the first platform; the clamping assembly includes a clamping motor, a second screw, a second base A and a second base B. The clamping motor is mounted on the first platform, the drive end of the translation motor is connected to the second screw, the second base A and the second base B are respectively mounted on the front and rear ends of the second screw, a second nut seat is movably connected to the second screw, and the second platform is connected above the second nut seat.

7. The bending and welding machine according to claim 6, characterized in that, The rotating assembly is mounted on the second platform, which is provided with a fixed base. The rotating assembly includes a rotating motor, a connecting sleeve, and a rotating shaft. The rotating shaft passes through the fixed base, and the connecting sleeve, which rotates synchronously with the rotating shaft, is fitted on the outer wall of the rotating shaft. The driving end of the rotating motor drives the connecting sleeve to drive the rotating shaft to rotate.

8. The bending and welding machine according to claim 7, characterized in that, The second platform is also provided with a positioning component on one side, including a positioning cylinder and a positioning pin. The positioning cylinder is located on one side of the second platform, and its driving end is connected to the positioning pin. The positioning pin axially passes through the center end of the rotating shaft and passes through the fixed locking housing.

9. The bending and welding machine according to claim 4, characterized in that, The feeding mechanism includes a vibratory feeder, a vibratory channel, and a pushing assembly. The pushing assembly includes a pushing cylinder and a pushing member connected thereto. The vibratory feeder, located on one side of the machine tool, is connected to one end of the vibratory channel, and its other end is vertically connected to the receiving platform. The pushing cylinder is located on the vibratory channel, and its connecting end points to the receiving platform. The pushing member, driven by the pushing cylinder, pushes the locking housing to be processed into the receiving groove.

10. The bending and welding machine according to claim 4, characterized in that, The machine tool is also provided with a three-axis drive mechanism on one side, including an X-axis moving unit, a Y-axis moving unit and a Z-axis moving unit, wherein the drive end of the previous unit is connected to the next component to form a motion transmission chain; the Z-axis moving unit is movably connected to a top extension plate, and the welding mechanism is provided on the top extension plate; the welding mechanism is connected to the upper top component on the side parallel to and close to the bending mechanism.

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