Full-automatic welding machine

Abstract

The invention discloses a full-automatic welding machine which comprises a product line feeding mechanism, a resistor element feeding mechanism and a welding discharging mechanism. The feeding mechanism comprises a product line conveying belt, a paying-off and slitting assembly, a front end peeling assembly, a wire twisting assembly and a trimming assembly. The resistor element feeding mechanism comprises a resistor element conveying belt, and a resistor element feeding assembly, a shaping assembly, a pushing and aligning assembly, a defective product recycling assembly and a pin cutting assembly which are sequentially arranged in the conveying direction of the resistor element conveying belt. The welding discharging mechanism comprises a welding conveying belt, a current welding assembly, a laser welding assembly, a primary CCD detection assembly, a defective product recycling assembly, a transfer printing marking assembly and a jig recycling assembly. The tail end of the product line conveying belt is aligned with the starting end of the welding conveying belt, the resistor element conveying belt is located on the side of the welding conveying belt, a transferring assembly is arranged between the tail end of the resistor element conveying belt and the starting end of the welding conveying belt, and the welding machine solves the problem that the production efficiency is low in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, in particular to a full-automatic welding machine. Background Art

[0002] The resistor elements on the market generally have two pins and a chip. The tail ends of the two pins are free ends, and the head ends of the two pins are welded and fixed to the chip. However, in order to meet the use requirements of various scenarios, the resistor elements need to be welded with different product lines according to different requirements. In addition, before welding the resistor elements and product lines, the pins of the resistor elements need to be shaped and cut, and the product lines of corresponding lengths need to be cut by themselves, and the insulation skin at the ends of the product lines needs to be removed and the wire cores need to be twisted. At present, the degree of automation in welding resistor elements is low. It is necessary to independently equip equipment for cutting, peeling, and twisting the product lines. It is also necessary to cooperate with equipment for welding electronic components to product lines. If there is a marking requirement, marking equipment will also be involved. Therefore, the product lines and resistor elements need to be moved manually between multiple sets of equipment, which has the problems of long processing time, inconsistent product quality, and low production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a fully automatic welding machine which can simultaneously complete the preparation of a product line and the welding of electronic components to the product line, thereby solving the problem of low production efficiency in the past.

[0004] To solve the above technical problems, the present invention discloses a fully automatic welding machine, comprising a product line feeding mechanism, a resistor element feeding mechanism and a welding unloading mechanism; the feeding mechanism comprises a product line conveyor belt and a wire laying and slitting component, a front end peeling component, a wire twisting component and a trimming component sequentially arranged along the conveying direction of the product line; the resistor element feeding mechanism comprises a resistor element conveyor belt and a resistor element feeding component, a shaping component, a trimming component, a defective product recovery component and a foot cutting component sequentially arranged along the conveying direction of the resistor element conveyor belt; the welding unloading mechanism comprises a welding conveyor belt and a current welding component, a laser welding component, a primary CCD detection component, a defective product recovery component, a pad printing marking component and a jig recovery component sequentially arranged along the conveying direction of the welding conveyor belt; the end of the product line conveyor belt is aligned with the beginning of the welding conveyor belt, the resistor element conveyor belt is located on the side of the welding conveyor belt, and a transfer component for transporting resistor elements is provided between the end of the resistor element conveyor belt and the beginning of the welding conveyor belt.

[0005] Among them, the front-end peeling component includes a first linear slide rail, the first linear slide rail is provided with a first linear slide plate which can slide along the first linear slide rail, the first linear slide plate is fixedly installed with a first vertical slide rail, the first vertical slide rail is provided with two first vertical slide plates which can slide along the first vertical slide rail, a driving motor which drives the two first vertical slide plates to move toward each other is fixedly installed on the top of the first vertical slide rail, and a first cutting knife for peeling is fixedly installed on each first vertical slide plate.

[0006] Among them, the wire twisting assembly includes second transverse slide rails spaced apart in the height direction, the two second transverse slide rails are each provided with a second transverse slide plate slidably matched with the second transverse slide rails, the two second transverse slide plates are fixedly mounted with wire twisting blocks, and the wire twisting assembly also includes a wire twisting driver driving the two second transverse slide plates to slide; the trimming assembly includes a first clamping cylinder and a waste box, the two working ends of the first clamping cylinder are fixedly mounted with a second cutter for cutting the wire, and the waste box is located below the first clamping cylinder.

[0007] Among them, the resistance element loading assembly includes a first turntable which is rotatable and located on the side of the resistance element conveyor belt. The first turntable is provided with a loading module, a foot brushing module, a foot opening module and a clamping and flipping module which are arranged in sequence along its circumference. The clamping and flipping module includes a second clamping cylinder and a rotating driving source which drives the second clamping cylinder to flip.

[0008] Among them, the shaping component includes a first lifting cylinder, a lifting platform is fixedly installed on the working end of the first lifting cylinder, a forming seat is fixedly installed on the top surface of the lifting platform, two first forming blocks arranged at intervals are fixedly installed on the forming seat, and a forming channel for inserting the resistance element is formed between the two first forming blocks, and a second forming block and a pushing block are arranged between the two first forming blocks, and the second forming block and the pushing block can both slide relative to the lifting platform, and the second forming block and the pushing block are respectively located at the front side and the rear side of the first forming block, and the lifting platform is also provided with a lower pressing block which can reciprocate in the height direction, and the lower pressing block is located above the forming channel.

[0009] Among them, the pushing assembly includes a vertically arranged mounting bracket, a pushing cylinder is fixedly installed on the top of the mounting bracket, a push rod for pushing the resistance element is fixedly installed on the working end of the pushing cylinder, the working end of the pushing cylinder is an L-shaped connecting piece, an indicating piece is fixedly installed on the side of the connecting piece, a scale is fixedly installed on the top end of the mounting bracket, and the indicating piece extends an indicating part toward the scale.

[0010] Among them, the transfer assembly includes a rotatable second turntable, on which are fixedly mounted a plurality of clamping modules arranged at intervals along the circumference of the second turntable, each clamping module includes two clamping arms arranged opposite to each other, and the two clamping arms can move toward each other so that the two clamping arms clamp the resistance element.

[0011] Among them, the current welding assembly includes a current welding machine and a second lifting mechanism that drives the current welding machine to reciprocate in the height direction. The current welding machine is provided with a welding head, a welding seat is provided under the welding head, a holding plate is provided on the side of the current welding machine, the holding plate is provided with a third lifting mechanism that drives the holding plate to reciprocate in the height direction, and the holding plate is provided with a groove for clamping the product line.

[0012] Among them, the laser welding assembly includes a welding transverse slide, the welding transverse slide is provided with a welding transverse motor for driving the welding transverse slide to slide, a welding bracket is fixedly installed on the welding transverse slide, a welding lifting motor is fixedly installed on the welding bracket, the output shaft of the welding lifting motor is fixedly connected to a screw body, a screw nut is sleeved on the outer peripheral side of the screw body, and a laser welding machine is fixedly installed on the screw nut.

[0013] Among them, the defective product recovery component includes a cutting cylinder, which is provided with two working ends sliding toward each other, and each working end is fixedly installed with a third cutter.

[0014] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: the welding machine of the present application can simultaneously complete the preparation of the product line and the welding of the product line and the resistance element, realize fully automated production of the machine, reduce labor costs, reduce the number of product transfers, shorten processing time, solve the problem of low production efficiency in the past, improve the product welding forming rate, and ensure the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of the fully automatic welding machine in the present invention;

[0017] Figure 2 It is a structural schematic diagram of the fixture in the present invention;

[0018] Figure 3 It is a structural schematic diagram of the front end peeling component in the present invention;

[0019] Figure 4 It is a structural schematic diagram of the wire twisting assembly in the present invention;

[0020] Figure 5 It is a structural schematic diagram of the resistor element feeding mechanism in the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the molding component in the present invention;

[0022] Figure 7 It is a structural schematic diagram of the pushing assembly in the present invention;

[0023] Figure 8 It is a structural schematic diagram of the transfer assembly in the present invention;

[0024] Fig. 9 It is a schematic diagram of the structure of the current welding assembly in the present invention;

[0025] Fig.10 It is a schematic diagram of the structure of the laser welding assembly in the present invention;

[0026] Fig.11 It is a schematic diagram of the structure of the defective product recovery component in the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or server that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or servers.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The present invention discloses a specific implementation of a fully automatic welding machine, see Figure 1 The welding machine includes a product line feeding mechanism 1, a resistor element feeding mechanism 21 and a welding unloading mechanism 3.

[0031] In this embodiment, the feeding mechanism 1 includes a product line conveyor belt 21 and a wire laying and slitting assembly, a front end peeling assembly, a wire twisting assembly and a trimming assembly arranged in sequence along the product line conveying direction. Figure 1 The wire-paying and slitting assembly is a conventional wire-paying and slitting assembly on the market, which is mainly composed of a wire-paying wheel 11, a plurality of straightening wheels 12 and a wire-pulling cutter 13. It mainly divides the coiled wire wound on the wire-paying wheel 11 into segments and places them on the jig through the wire-pulling cutter 13.

[0032] It should be noted that the product line conveyor belt 21 is a conventional conveyor belt, which needs to be used in conjunction with a fixture. Figure 2 The jig of this embodiment includes a jig seat 41 , a material plate 42 placed on the jig seat 41 , and a clamping member 43 located on the side of the jig seat 41 .

[0033] Combination Figure 3 , the front-end peeling component is mainly used to remove the insulation skin on the outside of the product line after slitting. Specifically, the front-end peeling component includes a first linear slide 51, and the first linear slide 51 is provided with a first linear slide 52 that can slide along the first linear slide 51. The relative movement between the first linear slide 52 and the first linear slide 51 can be achieved by a driving source composed of a motor, a screw, and a screw sleeve, or directly driven by a cylinder. A first vertical slide 53 is fixedly installed on the first linear slide 52, and the first vertical slide 53 is provided with two first vertical slides 54 that can slide along the first vertical slide 53. A driving motor that drives the two first vertical slides 54 to move toward each other is fixedly installed on the top of the first vertical slide 53. Similarly, the driving motor can cooperate with the screw to drive the first vertical slide 54 to slide. A first cutter 55 for peeling is fixedly installed on each first vertical slide 54. The working process of the front-end peeling component is mainly to drive the two first cutters 55 to move towards each other, control the cutting depth of the first cutters 55, and then guide the first cutters 55 to perform wire stripping by the first linear guide rail 51.

[0034] In this embodiment, combined with Figure 4The wire twisting assembly includes a second transverse slide rail 61 spaced apart in the height direction, and the two second transverse slide rails 61 are both provided with a second transverse slide plate 62 that is slidably matched with the second transverse slide rail 61, and the two second transverse slide plates 62 are both fixedly mounted with a wire twisting block 63, and the wire twisting assembly also includes a wire twisting driver that drives the two second transverse slide plates 62 to slide. The wire twisting driver can be a cylinder or an oil cylinder, and a gear and two racks are arranged between the two second transverse slide plates 62, so that the wire twisting driver can drive one of the second transverse slide plates 62 to slide while driving the other second transverse slide plate 62 to slide. The trimming assembly includes a first clamping cylinder 71 and a waste box 73, and the two working ends of the first clamping cylinder 71 are both fixedly mounted with a second cutter 72 for cutting the wire, and the waste box 73 is located below the first clamping cylinder 71, and the waste box 73 is mainly used to load the cut wire core, and the wire twisting block 63 is mainly used to twist the wire core.

[0035] Combination Figure 5 The resistor element feeding mechanism 21 includes a resistor element conveyor belt 23 and a resistor element feeding assembly 81, a shaping assembly 82, a pushing assembly 83, a defective product recovery assembly 84 and a foot cutting assembly 85 which are sequentially arranged along the conveying direction of the resistor element conveyor belt 23. The resistor element conveyor belt 23 is a conventional synchronous conveyor belt, which includes a synchronous belt, and a plurality of jigs arranged at intervals are fixedly installed on the synchronous belt. Specifically, the resistor element feeding assembly 81 includes a first turntable 810 which is rotatable and located on the side of the resistor element conveyor belt 23. The first turntable 810 is provided with a feeding module 811, a foot brushing module 812, a foot opening module 813 and a clamping and flipping module which are sequentially arranged along its circumference. The clamping and flipping module includes a second clamping cylinder 814 and a rotation driving source 815 which drives the second clamping cylinder 814 to flip. It should be noted that the resistor element loading assembly 81 is mainly used to take the resistor element out of the discharge box and perform positioning, initial molding and transfer processes in sequence. It is a conventional resistor element loading assembly 81, and its working principle is easy to understand for technicians in this field.

[0036] Combination Figure 6The shaping assembly 82 includes a first lifting cylinder 821, a lifting platform 822 is fixedly installed at the working end of the first lifting cylinder 821, a molding seat 827 is fixedly installed on the top surface of the lifting platform 822, two first molding blocks 823 are fixedly installed on the molding seat 827, and a molding channel for inserting the resistor element is formed between the two first molding blocks 823. A second molding block 824 and a push block 825 are arranged between the two first molding blocks 823. Both the second molding block 824 and the push block 825 can slide relative to the lifting platform 822. The second molding block 824 and the push block 825 are respectively located at the front side and the rear side of the first molding block 823. The lifting platform 822 is also provided with a pressing block 826 that can reciprocate in the height direction, and the pressing block 826 is located above the molding channel. When working, the first molding block 823, the second molding block 824 and the push block 825 cooperate with each other to shape the pins of the electronic components into a set shape.

[0037] Combination Figure 7 The pushing assembly 83 includes a vertically arranged mounting bracket 831, a pushing cylinder 832 is fixedly mounted on the top of the mounting bracket 831, a push rod 834 for pushing the resistance element is fixedly mounted on the working end of the pushing cylinder 832, the working end of the pushing cylinder 832 is an L-shaped connecting piece 833, an indicating piece 835 is fixedly mounted on the side of the connecting piece 833, a scale 837 is fixedly mounted on the top end of the mounting bracket 831, and an indicating part 836 extends from the indicating piece 835 toward the scale 837.

[0038] In addition, the defective product recovery component 84 and the pin cutting component 85 are both based on the clamping cylinder. The two working ends of the clamping cylinder are respectively fixed with a cutter or a clamping block. In conjunction with the corresponding moving mechanism, the resistor element can be removed from the fixture or the pins can be cut.

[0039] The welding unloading mechanism 3 includes a welding conveyor belt 22, the end of the product line conveyor belt 21 is aligned with the beginning of the welding conveyor belt 22, the resistor element conveyor belt 23 is located on the side of the welding conveyor belt 22, and a transfer assembly 9 for transporting resistor elements is provided between the end of the resistor element conveyor belt 23 and the beginning of the welding conveyor belt 22. Figure 8 The transfer assembly 9 includes a rotatable second turntable 91, on which a plurality of clamping modules 92 are fixedly mounted and arranged at intervals along the circumference of the second turntable 91, and each clamping module 92 includes two clamping arms 93 arranged opposite to each other, and the two clamping arms 93 can move toward each other so that the two clamping arms 93 clamp the resistor element. The transfer assembly 9 mainly transfers the electronic components from the resistor element conveyor belt 23 to the jig of the welding conveyor belt 22 by clamping and then rotating.

[0040] The welding unloading mechanism 3 also includes a current welding component, a laser welding component, a primary CCD detection component, a defective product recovery component, a pad printing marking component and a fixture recovery component which are sequentially arranged along the conveying direction of the welding conveyor belt 22 .

[0041] Combination Fig. 9 The current welding assembly includes a current welding machine and a second lifting mechanism 102 for driving the current welding machine to reciprocate in the height direction. The current welding machine is provided with a welding head 101, a welding seat 103 is provided below the welding head 101, a holding plate 104 is provided on the side of the current welding machine, the holding plate 104 is provided with a third lifting mechanism 105 for driving the holding plate 104 to reciprocate in the height direction, and the holding plate 104 is provided with a groove for clamping the product line.

[0042] Combination Fig.10 The laser welding assembly includes a welding transverse slide 200, which is provided with a welding transverse motor 201 for driving the welding transverse slide 200 to slide, a welding bracket 202 is fixedly installed on the welding transverse slide 200, a welding lifting motor 203 is fixedly installed on the welding bracket 202, and the output shaft of the welding lifting motor 203 is fixedly connected with a screw body 204, and a screw nut 205 is sleeved on the outer peripheral side of the screw body 204, and a laser welding machine 206 is fixedly installed on the screw nut 205.

[0043] Combination Fig.11 The defective product recovery component includes a cutting cylinder 300, which is provided with two working ends that slide toward each other, and each working end is fixedly installed with a third cutter. The third cutter is mainly used to cut the welding part between the resistor element and the product line, so that the resistor element can be recovered.

[0044] In addition, CCD detection components can be set between each workstation, which can detect products through image recognition. The pad printing and marking components and the jig recycling components are both conventional components. The pad printing and marking components mainly transfer the welded products to the printing components for printing, and the jig recycling components are mainly used to recycle unused jigs. It can achieve the recycling of jigs by setting a guide rail connecting the two ends of the welding machine and cooperating with the corresponding lifting mechanism.

[0045] The working process of the fully automatic welding machine of this embodiment is: first put the jig on the product line conveyor belt 21, and the external moving mechanism transfers the jig to the work station of the wire laying and slitting assembly to pull the wire, cut it to a set length and peel one end of the wire, thereby completing the preparation of the product line. At the same time, the resistor element feeding mechanism 21 works synchronously, the resistor element feeding mechanism 21 transfers the resistor element to the resistor element conveyor belt 23, the resistor element conveyor belt 23 conveys the resistor to the shaping component 82 for shaping and pushing process, cooperates with the CCD detection component for appearance detection, and then the resistor element conveyor belt 23 conveys the resistor to the defective product recovery component 84 for removal of defective products in appearance, the resistor element conveyor belt 23 conveys the good resistor element to the welding conveyor belt 22 via the moving component, and then the resistor element is conveyed to the current welding component, the current welding component performs current welding on the product line and the resistor element, the jig is transferred to the laser welding machine 206 for laser welding, the jig is transferred to the pad printing marking mechanism for pad printing marking, the jig is transferred to the receiving mechanism for product receiving, and the jig is transferred to the empty jig circulation mechanism for empty jig circulation.

[0046] Compared with the prior art, the fully automatic welding machine of this embodiment can simultaneously complete the preparation of the product line and the welding of the product line with the resistance element, realize fully automated production of the machine, reduce labor costs, reduce the number of product transfers, shorten processing time, solve the problem of low production efficiency in the past, improve the product welding forming rate, and ensure the product qualification rate.

[0047] Finally, it should be noted that the fully automatic welding machine disclosed in the embodiment of the present invention is only a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully automatic welding machine, characterized in that: Including product line loading mechanism, resistor element loading mechanism and welding unloading mechanism; The feeding mechanism comprises a product line conveyor belt and a wire laying and slitting assembly, a front end peeling assembly, a wire twisting assembly and a trimming assembly which are sequentially arranged along the conveying direction of the product line; The resistor element feeding mechanism comprises a resistor element conveyor belt and a resistor element feeding assembly, a shaping assembly, a pushing assembly, a defective product recovery assembly and a foot cutting assembly which are sequentially arranged along the conveying direction of the resistor element conveyor belt; The welding unloading mechanism includes a welding conveyor belt and a current welding component, a laser welding component, a primary CCD detection component, a defective product recovery component, a pad printing marking component and a fixture recovery component which are sequentially arranged along the conveying direction of the welding conveyor belt; The end of the product line conveyor belt is aligned with the beginning of the welding conveyor belt, the resistor element conveyor belt is located on the side of the welding conveyor belt, and a transfer component for transporting resistor elements is provided between the end of the resistor element conveyor belt and the beginning of the welding conveyor belt.

2. A fully automatic welding machine according to claim 1, characterized in that: The front-end peeling assembly includes a first linear slide rail, the first linear slide rail is provided with a first linear slide plate that can slide along the first linear slide rail, the first linear slide plate is fixedly installed with a first vertical slide rail, the first vertical slide rail is provided with two first vertical slide plates that can slide along the first vertical slide rail, a driving motor that drives the two first vertical slide plates to move toward each other is fixedly installed on the top of the first vertical slide rail, and a first cutting knife for peeling is fixedly installed on each of the first vertical slide plates.

3. A fully automatic welding machine according to claim 1, characterized in that: The wire twisting assembly includes second transverse slide rails spaced apart in the height direction, the two second transverse slide rails are each provided with a second transverse slide plate that slides with the second transverse slide rail, the two second transverse slide plates are each fixedly mounted with a wire twisting block, the wire twisting assembly also includes a wire twisting driver that drives the two second transverse slide plates to slide; the trimming assembly includes a first clamping cylinder and a waste box, the two working ends of the first clamping cylinder are each fixedly mounted with a second cutter for cutting the wire, and the waste box is located below the first clamping cylinder.

4. A fully automatic welding machine according to claim 1, characterized in that: The resistance element loading assembly includes a first turntable which is rotatable and located on the side of the resistance element conveyor belt. The first turntable is provided with a loading module, a foot brushing module, a foot opening module and a clamping and flipping module which are arranged in sequence along its circumference. The clamping and flipping module includes a second clamping cylinder and a rotating driving source which drives the second clamping cylinder to flip.

5. A fully automatic welding machine according to claim 1, characterized in that: The shaping component includes a first lifting cylinder, a lifting platform is fixedly installed on the working end of the first lifting cylinder, a forming seat is fixedly installed on the top surface of the lifting platform, two first forming blocks arranged at intervals are fixedly installed on the forming seat, a forming channel for inserting the resistance element is formed between the two first forming blocks, a second forming block and a pushing block are provided between the two first forming blocks, both of the second forming block and the pushing block can slide relative to the lifting platform, the second forming block and the pushing block are respectively located at the front side and the rear side of the first forming block, and the lifting platform is also provided with a lower pressing block which can reciprocate in the height direction, and the lower pressing block is located above the forming channel.

6. A fully automatic welding machine according to claim 1, characterized in that: The pushing assembly includes a vertically arranged mounting bracket, a pushing cylinder is fixedly mounted on the top of the mounting bracket, a push rod for pushing the resistance element is fixedly mounted on the working end of the pushing cylinder, the working end of the pushing cylinder is an L-shaped connecting piece, an indicator is fixedly mounted on the side of the connecting piece, a scale is fixedly mounted on the top end of the mounting bracket, and the indicator extends an indicating portion toward the scale.

7. A fully automatic welding machine according to claim 1, characterized in that: The transfer assembly includes a rotatable second turntable, on which a plurality of clamping modules are fixedly mounted and arranged at intervals along the circumference of the second turntable. Each of the clamping modules includes two clamping arms arranged opposite to each other, and the two clamping arms can move toward each other so that the two clamping arms clamp the resistance element.

8. The fully automatic welding machine according to claim 1, characterized in that: The current welding assembly includes a current welding machine and a second lifting mechanism that drives the current welding machine to reciprocate in the height direction. The current welding machine is provided with a welding head, a welding seat is provided below the welding head, a holding plate is provided on the side of the current welding machine, the holding plate is provided with a third lifting mechanism that drives the holding plate to reciprocate in the height direction, and the holding plate is provided with a groove for clamping the product line.

9. The fully automatic welding machine according to claim 1, characterized in that: The laser welding assembly includes a welding transverse slide, the welding transverse slide is provided with a welding transverse motor driving the welding transverse slide to slide, a welding bracket is fixedly installed on the welding transverse slide, a welding lifting motor is fixedly installed on the welding bracket, the output shaft of the welding lifting motor is fixedly connected to a screw body, a screw nut is sleeved on the outer peripheral side of the screw body, and a laser welding machine is fixedly installed on the screw nut.

10. The fully automatic welding machine according to claim 1, characterized in that: The defective product recovery component comprises a cutting cylinder, and the cutting cylinder is provided with two working ends sliding toward each other, and each working end is fixedly mounted with a third cutter.

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