Automatic feeding spot welding machine for cutting

Abstract

The utility model relates to the technical field of machine manufacturing, in particular to a cutting automatic feeding spot welding machine which comprises a machine body, a rotating disc transposition unit is arranged on the machine body, and a plurality of positioning jigs are arranged on the rotating disc transposition unit in a surrounding mode. A workpiece feeding unit, a soldering lug feeding and cutting unit, a welding unit and a discharging unit are sequentially arranged on the machine body in a surrounding mode along the rotary disc transposition unit. The workpiece feeding unit is used for providing workpieces in an oriented mode and placing the workpieces on the positioning jigs. The soldering lug feeding and cutting unit is in butt joint with a material disc so as to be used for cutting a material belt provided by the material disc into soldering lugs and then positioning and placing the soldering lugs on a positioning jig where workpieces are placed in advance. Accurate positioning is carried out through the positioning plug pin before the soldering lug is cut off, interference on positioning caused by impact force generated when adjacent hardware extension sections are broken in a traditional method is effectively avoided, the accuracy of positioning of the soldering lug and a workpiece is greatly improved, and a solid guarantee is provided for subsequent high-quality welding; and welding defects caused by positioning deviation are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical manufacturing technical field especially is related to a cutting automatic feeding spot welding machine. BACKGROUND

[0002] In today's era of rapid technological change, electronic products continue to develop towards miniaturization and precision. To meet the diversified functional needs of electronic products, small and precise hardware plays a very key role. Despite the small size of these hardware, it has a decisive influence on the performance and stability of electronic products. In the assembly and welding process of precision hardware, due to its small size and precise structure, the grabbing and fixing operation faces great difficulties, which is a major challenge in the process of automatic assembly and welding. At present, in order to solve this problem, the method of punching an extension section when machining precision hardware is often used. With the extension section, the precision hardware can be easily grabbed and assembled or positioned at the corresponding position for welding. At the same time, by connecting the precision hardware and the extension section with a breakable structure, the hardware can form a material belt with the extension section as the connection node, realizing directional feeding.

[0003] However, this method has obvious defects. Before grabbing the hardware, the extension section of the adjacent hardware needs to be disconnected, and a large impact force will be generated at the moment of disconnection, which can easily lead to inaccurate positioning. In automatic equipment, after grabbing the hardware, a special positioning or angle adjusting mechanism must be set to reposition the hardware, which not only increases the complexity and cost of the equipment, but also reduces the production efficiency. Therefore, an improved technical solution is urgently needed to effectively solve the above problems and improve the efficiency and precision of precision hardware assembly and welding. INVENTION CONTENTS

[0004] The utility model aims at providing a technical scheme that can solve the above problems.

[0005] A cutting automatic feeding spot welding machine, comprising a machine body, a rotary table transposition machine set is arranged on the machine body, a plurality of positioning fixtures are arranged around the rotary table transposition machine set, a workpiece feeding machine set, a welding sheet feeding and cutting machine set, a welding machine set and a discharge machine set are sequentially arranged around the rotary table transposition machine set on the machine body, the workpiece feeding machine set is used for providing workpieces in a directional manner and placing the workpieces on the positioning fixtures; the welding sheet feeding and cutting machine set is connected with a tray for positioning and placing the welding sheet cut from the material belt provided by the tray on the positioning fixture where the workpiece is placed in advance; the welding machine set is used for welding the workpiece and the welding sheet on the positioning fixture where the workpiece and the welding sheet are placed; and the discharge machine set is used for taking out the workpiece with the welded welding sheet;

[0006] The solder piece feeding and cutting machine set comprises a material belt directional conveying machine set, a lower pressing block arranged in front of the material belt directional conveying machine set, an upper cutting block arranged in front of the lower pressing block, a positioning pin arranged on the upper cutting block, and a first mechanical arm mounted on the machine body and used for taking and placing the solder piece from the upper cutting block to the positioning jig. The solder piece feeding and cutting machine set is further provided with a lower pressing cylinder and an upper pushing cylinder for driving the lower pressing block and the upper cutting block respectively. When the upper cutting block is raised, the solder piece provided by the material belt directional conveying machine set is positioned by the positioning pin, and then the solder piece inserted into the positioning pin is cut from the material belt through the interaction of the lower pressing block and the upper cutting block.

[0007] Preferably, the rotating disc transposition machine set comprises a divider mounted on the machine body and a rotating disc body connected with the divider in power. A plurality of positioning jigs are equidistantly mounted on the edge position of the rotating disc body.

[0008] Preferably, the positioning jig comprises a jig base plate arranged on the rotating disc body, a spring lifting plate connected between the jig base plate and the rotating disc body in a guide mode, a pulling hook member connected with the lower end of the spring lifting plate and penetrating into the lower part of the rotating disc body, and a plurality of limiting strips mounted on the lifting plate and capable of penetrating into the jig base plate in a movable mode. The plurality of limiting strips are used for tightly positioning the periphery of the workpiece and the solder piece. A lower pulling cylinder set is mounted on the machine body at the position corresponding to the discharging machine set and is connected with the pulling hook member.

[0009] Preferably, the workpiece feeding machine set comprises a workpiece directional conveying line mounted on the machine body, a workpiece preliminary positioning component mounted on the machine body and located between the workpiece directional conveying line and the rotating disc body, and a second mechanical arm mounted on the machine body. The second mechanical arm is used for taking and placing the workpiece from the workpiece directional conveying line to the workpiece preliminary positioning component, and then taking and placing the workpiece on the workpiece preliminary positioning component to the corresponding positioning jig.

[0010] Preferably, the material belt directional conveying machine set comprises a lifting frame mounted on the machine body, a material belt guide rail mounted on the lifting frame, a one-way pushing machine set mounted on the material belt guide rail and used for pushing the material belt, and a material belt flow guide plate mounted on the lifting frame and connected with the feeding end of the material belt guide rail.

[0011] Preferably, a guide block is further mounted on the lifting frame. The lower pressing block and the upper cutting block are connected with the guide block in a guide mode. The lower pressing cylinder and the upper pushing cylinder are mounted on the lower end of the lifting frame.

[0012] Preferably, the welding machine set comprises a fixing frame mounted on the machine body, a welding driving cylinder mounted on the fixing frame, a transition plate connected with the welding driving cylinder in power, and a welding head mounted on the transition plate. The welding head is adjusted to be right above the positioning jig through the fixing frame and the transition plate.

[0013] Preferably, the welding machine set further comprises a linear module vertically mounted on the frame of the machine body, a fixing base power-connected to the linear module, and a visual identification module fixedly mounted on the fixing base, the transition plate is provided in a ring structure, the welding head is mounted inside the inner periphery of the transition plate, and the light source module is provided around the transition plate, and the visual identification module is arranged above the transition plate through the fixing base.

[0014] Preferably, the discharging machine set comprises a third mechanical arm mounted on the machine body and a guide chute mounted on the machine body, and the third mechanical arm is used for taking and placing the workpiece on the positioning jig into the guide chute.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The present application realizes close cooperation between the machine sets, has high automation degree, and realizes smooth and efficient workpiece feeding, welding piece feeding and cutting, welding and discharging in one go, reduces the time consumed by additional operations such as repositioning due to inaccurate positioning, and greatly improves the production efficiency of precision hardware assembly welding.

[0017] The positioning pin accurately positions the welding piece before cutting, effectively avoids the interference of the impact force generated when the adjacent hardware extension section is disconnected in the traditional method on the positioning, greatly improves the positioning accuracy of the welding piece and the workpiece, provides a solid guarantee for subsequent high-quality welding, reduces the welding defects caused by positioning deviation, and improves the product quality.

[0018] Compared with the traditional method of setting a special positioning or angle adjusting mechanism after grabbing the hardware, the present application only relies on the positioning pin and other cleverly designed structures of the welding piece feeding and cutting machine set to realize accurate positioning, reduces the number and complexity of device parts, and thus reduces the manufacturing and maintenance costs of the device.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2Is the structure schematic diagram of the positioning fixture in the utility model;

[0023] Figure 3 Is the disassembly structure schematic diagram of the positioning fixture in the utility model;

[0024] Figure 4 Is the structure schematic diagram of the workpiece feeding machine set in the utility model;

[0025] Figure 5 Is the structure schematic diagram of the soldering lug feeding and cutting machine set in the utility model;

[0026] Figure 6 Is the structure schematic diagram of the corresponding machine set of cutting soldering lug in the utility model;

[0027] Figure 7 Is the structure schematic diagram of the welding machine set in the utility model.

[0028] The reference signs and names in the drawing are as follows:

[0029] Machine body 10, rotating disc transposition machine set 20, divider 21, rotating disc main body 22, positioning fixture 30, fixture base plate 31, spring lifting plate 32, pull hook piece 33, limiting strip 34, lower pull cylinder set 35, workpiece feeding machine set 40, workpiece directional conveying line 41, workpiece initial positioning component 42, second mechanical hand 43, soldering lug feeding and cutting machine set 50, material belt directional conveying machine set 51, lifting frame 511, material belt guide rail 512, one-way pushing machine set 513, material belt flow guide plate 514, guide block 515, lower pressing block 52, upper cutting block 53, positioning pin 54, first mechanical hand 55, lower pressing cylinder 56, upper pushing cylinder 57, welding machine set 60, fixing frame 61, welding driving cylinder 62, transition plate 63, welding head 64, linear module 65, fixing seat 66, visual identification module 67, light source module 68, and discharging machine set 70, third mechanical hand 71, material guide groove 72. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Please refer to Figures 1-7The utility model embodiment, a kind of cutting automatic feeding spot welding machine, including body 10, be provided with carousel transposition machine set 20 on body 10, multiple positioning fixtures 30 are provided around on carousel transposition machine set 20, workpiece feeding machine set 40, solder piece feeding and cutting machine set 50, welding machine set 60 and discharge machine set 70 are sequentially provided around on body 10 along carousel transposition machine set 20, workpiece feeding machine set 40 is used to directional provision workpiece and place workpiece on positioning fixture 30;Solder piece feeding and cutting machine set 50 is butt joint with material tray to be positioned after the solder piece that material tray provides is cut into strip and placed on the positioning fixture 30 where workpiece is placed in advance;Welding machine set 60 is used to weld on the positioning fixture 30 where workpiece and solder piece are placed, discharge machine set 70 is used to take out workpiece with solder piece welded;

[0032] Wherein, solder piece feeding and cutting machine set 50 includes strip directional conveyer set 51, lower pressing block 52 before being provided in strip directional conveyer set 51, upper cutting block 53 before being provided in lower pressing block 52, positioning pin 54 on upper cutting block 53, and first manipulator 55 for being installed on body 10 and used to take and place solder piece from upper cutting block 53 to positioning fixture 30, solder piece feeding and cutting machine set 50 is also provided with lower pressing cylinder 56 and upper push cylinder 57 to drive lower pressing block 52 and upper cutting block 53 respectively, when upper cutting block 53 rises, solder piece after being provided by strip directional conveyer set 51 is positioned and inserted by positioning pin 54, then, solder piece inserted on positioning pin 54 is cut off from strip by the interaction of lower pressing block 52 and upper cutting block 53.

[0033] In the above technical solution, the workpiece feeding unit 40 accurately places the workpiece in the positioning jig 30 on the rotary table transposition unit 20 according to the established orientation mode. The rotary table transposition unit 20 will drive the positioning jig 30 to rotate to the position of the solder pad feeding and cutting unit 50 according to the preset program. At this time, the material belt orientation conveyor unit 51 stably feeds the material belt provided by the material disc to the upper cutting block 53, and then the upper cutting block 53 rises under the action of the upper pushing cylinder 57, and the lower pressing block 52 moves downward under the action of the lower pressing cylinder 56. During the upward movement of the upper cutting block 53, the positioning pins 54 accurately penetrate the holes reserved on the solder pad. Generally, two positioning pins 54 are provided to ensure that the solder pad does not rotate after being penetrated. The positioning pins 54 and the solder pad are penetrated to achieve positioning of the solder pad. Then, the lower pressing block 52 and the upper cutting block 53 move to abut each other, cutting off the solder pad inserted into the positioning pins 54 from the material belt. Subsequently, the first mechanical hand 55 installed on the machine body 10 starts to grab the cut-off solder pad from the upper cutting block 53 and accurately places it on the positioning jig 30 where the workpiece has been placed in advance. At this time, the rotary table transposition unit 20 rotates again to transport the positioning jig 30 with the workpiece and the solder pad to the welding unit 60. The welding unit 60 performs welding operation on the workpiece and the solder pad in the positioning jig 30, and firmly connects them through a specific welding process. After welding is completed, the rotary table transposition unit 20 transports the welded workpiece to the discharging unit 70, and the discharging unit 70 takes out the workpiece with the welded solder pad, completing the entire production process.

[0034] Through the above technical solution, the various units work closely and automatically, with high automation degree. From workpiece feeding, solder pad feeding and cutting, welding to discharging, the entire process is smooth and efficient, and the production efficiency of precision hardware assembly welding is greatly improved.

[0035] By accurately positioning the positioning pins 54 before cutting off the solder pad, the interference caused by the impact force on the positioning when the adjacent hardware extension is disconnected in the traditional method is effectively avoided, greatly improving the accuracy of the positioning of the solder pad and the workpiece, providing a solid guarantee for subsequent high-quality welding, reducing welding defects caused by positioning deviation, and improving product quality.

[0036] Compared with the traditional method of setting a special positioning or angle adjustment mechanism after grabbing the hardware, the device only relies on the positioning pins 54 and other cleverly designed structures of the solder pad feeding and cutting unit 50 to achieve accurate positioning, reducing the number and complexity of device parts, thereby reducing the manufacturing and maintenance costs of the device.

[0037] Please refer to Figures 2-3On the basis of the above technical scheme, further proposed turntable transposition unit 20 includes the divider 21 installed on the machine body 10 and the turntable main body 22 connected with the divider 21, a plurality of positioning fixtures 30 are installed at equal distances on the edge position of the turntable main body 22. The divider 21 cooperates with the turntable main body 22 connected with power to accurately and stably drive the positioning fixtures 30 installed at equal distances on the edge position of the turntable main body 22 to be transposed in turn, ensuring that each process is connected in order, and improving the stability of the overall production rhythm. In the positioning fixture 30, the fixture base plate 31 raised, the spring lifting plate 32 connected in a guide manner, and the hook piece 33 are cooperated with each other, so that the positioning fixture 30 can be flexibly lifted and reset at different process stages. The positioning fixture 30 includes the fixture base plate 31 raised on the turntable main body 22, the spring lifting plate 32 connected in a guide manner between the fixture base plate 31 and the turntable main body 22, the hook piece 33 connected to the lower end of the spring lifting plate 32 and penetrating below the turntable main body 22, and a plurality of limiting strips 34 installed on the lifting plate and movably penetrating the fixture base plate 31, the plurality of limiting strips 34 are used for positioning the periphery of the workpiece and the soldering sheet. A lower pull cylinder set 35 is installed on the machine body 10 corresponding to the position of the discharging unit 70 and is connected with the hook piece 33. When placing the workpiece, the soldering sheet, and the soldering soldering sheet, the spring lifting plate 32 is raised under the action of the spring to make the limiting strip 34 clamp the workpiece and the soldering sheet, so as to facilitate the welding operation and reduce the vibration interference from the turntable main body 22, and ensure the welding precision. The plurality of limiting strips 34 movably penetrating the fixture base plate 31 can be flexibly adjusted in position according to the size of the workpiece and the soldering sheet, and accurately position the periphery thereof. The lower pull cylinder set 35 connected with the hook piece 33 is installed on the machine body 10 corresponding to the position of the discharging unit 70, and in the discharging stage, the limiting strip 34 can be accurately controlled to descend by pulling down the hook piece 33, so as to facilitate the discharging unit 70 to smoothly take out the welded workpiece, improve the discharging efficiency, and greatly optimize the operation performance and production efficiency of the equipment as a whole.

[0038] Please refer to Figure 4On the basis of the above technical solutions, the workpiece feeding unit 40 further comprises a workpiece directional conveying line 41 installed on the machine body 10, a workpiece preliminary positioning component 42 installed on the machine body 10 and located between the workpiece directional conveying line 41 and the rotary disc main body 22, and a second mechanical hand 43 installed on the machine body 10, the second mechanical hand 43 being used to take and place the workpiece from the workpiece directional conveying line 41 to the workpiece preliminary positioning component 42, and then synchronously take and place the workpiece on the workpiece preliminary positioning component 42 to the corresponding positioning jig 30. The workpiece directional conveying line 41 can stably and orderly convey the workpiece in a predetermined direction, which can be connected to a manual table for manual feeding or connected to a vibrating disc for automatic feeding, laying a foundation for subsequent accurate feeding. The workpiece preliminary positioning component 42 can preliminarily position the workpiece obtained from the workpiece directional conveying line 41, correct the workpiece posture, improve the workpiece position accuracy, greatly reduce the deviation of the second mechanical hand 43 when grabbing and placing the workpiece, and ensure the feeding accuracy. The second mechanical hand 43 flexibly takes and places the workpiece among the workpiece directional conveying line 41, the workpiece preliminary positioning component 42 and the positioning jig 30, realizes the automatic feeding operation, effectively improves the feeding efficiency, and closely cooperates with the whole design to ensure the efficient and accurate workpiece feeding process, cooperates with other units of the equipment, further improves the overall production efficiency and product quality of the cutting automatic feeding spot welding machine, reduces the manual intervention, and reduces the labor cost.

[0039] Please refer to Figures 5-6On the basis of the above technical solutions, the strip directional conveying unit 51 further comprises a lifting frame 511 installed on the machine body 10, a strip guide rail 512 installed on the lifting frame 511, a one-way pushing unit 513 installed on the strip guide rail 512 for pushing the strip, and a strip guide plate 514 installed on the lifting frame 511 and connected to the feeding end of the strip guide rail 512. The lifting frame 511 lifts the entire conveying unit to a suitable position, facilitating cooperation with other parts of the equipment and facilitating observation and maintenance by the operator. The strip guide rail 512 ensures that the strip always maintains the intended direction during conveying, avoiding deviation and winding, ensuring the stability and continuity of conveying. The one-way pushing unit 513 accurately pushes the strip, ensuring the accuracy of the pushing distance each time, so that the soldering piece can accurately reach the designated position, providing an accurate basis for subsequent cutting and positioning operations. The strip guide plate 514 guides the strip to smoothly enter the strip guide rail 512 at the feeding end, preventing the strip from jamming or mispositioning at the initial stage. The lifting frame 511 is also provided with a guide block 515, the lower pressing block 52 and the upper cutting block 53 are guided and connected to the guide block 515, and the lower pressing cylinder 56 and the upper pushing cylinder 57 are installed at the lower end of the lifting frame 511. The arrangement of the guide block 515 enables the lower pressing block 52 and the upper cutting block 53 to move accurately in the working direction, ensuring the accuracy and stability of the cutting action. The lower pressing cylinder 56 and the upper pushing cylinder 57 are installed at the lower end of the lifting frame 511, which not only makes rational use of space but also stably provides power for the lower pressing block 52 and the upper cutting block 53, enabling the entire strip directional conveying and cutting process to run efficiently and stably, thereby improving the overall work efficiency and product quality of the equipment.

[0040] Please refer to Figure 7On the basis of the above technical scheme, further proposed welding unit 60 includes a fixed frame 61 mounted on the machine body 10, a welding drive cylinder 62 mounted on the fixed frame 61, a transition plate 63 connected to the welding drive cylinder 62, and a welding head 64 mounted on the transition plate 63. The welding head 64 is adjusted above the positioning jig 30 through the fixed frame 61 and the transition plate 63. The welding unit 60 further includes a linear module 65 vertically mounted on the machine frame of the machine body 10, a fixed seat 66 connected to the linear module 65, and a visual identification module 67 fixedly installed on the fixed seat 66. The transition plate 63 is annularly arranged, and the welding head 64 is installed within the inner periphery of the transition plate 63. A light source module 68 is arranged around the transition plate 63, and the visual identification module 67 is arranged above the transition plate 63 through the fixed seat 66. The fixed frame 61 provides a stable mounting basis for the entire welding unit 60. In cooperation with the welding drive cylinder 62 and the transition plate 63, the position of the welding head 64 can be accurately adjusted to be stably above the positioning jig 30, ensuring the accuracy of the welding position and providing a guarantee for high-quality welding. The linear module 65, the fixed seat 66, and the visual identification module 67 work together to allow the visual identification module 67 to be flexibly adjusted above the transition plate 63. Through visual identification of the workpiece and the welding sheet on the positioning jig 30, the position and welding state can be accurately detected, and real-time feedback information can be provided to optimize the welding process, greatly improving the stability and consistency of the welding quality. The transition plate 63 adopts an annular structure, which is not only conducive to the installation of the welding head 64, but also provides convenience for the surrounding light source module 68. The light source module 68 can uniformly illuminate the welding area, improve the detection accuracy of the visual identification module 67, further assist the welding process, and ensure the welding quality. The design of the entire welding unit 60, from accurate adjustment of the welding position to visual monitoring and light source assistance in the welding process, comprehensively improves the efficiency and quality of welding. In cooperation with other parts of the equipment, the overall performance of the cutting automatic feeding spot welding machine is significantly improved.

[0041] Please refer to Figure 1 On the basis of the above technical scheme, further proposed discharging unit 70 includes a third manipulator 71 mounted on the machine body 10 and a guide chute 72 mounted on the machine body 10. The third manipulator 71 is used to take and place the workpiece on the positioning jig 30 into the guide chute 72. The third manipulator 71 accurately grasps the workpiece on the positioning jig 30 that has completed welding, realizes the connection from the equipment processing area to the discharging link, ensures the stability and accuracy of the workpiece transfer process, and avoids damaging the processed workpiece. The guide chute 72 mounted on the machine body 10 provides a standardized discharging path for the workpiece, allowing the workpiece to be orderly and smoothly discharged from the equipment, facilitating subsequent collection and arrangement work.

[0042] In the technical scheme, each manipulator adopts a linear module combined with a lifting cylinder to control the vacuum chuck to complete the pick-and-place operation of the workpiece or the soldering piece, and the PPU manipulator can also be used to control the vacuum chuck to complete the pick-and-place operation of the workpiece or the soldering piece, and the one-way pushing unit 513 adopts a cylinder combined with a pushing piece capable of rotating in one direction to realize the step-by-step pushing of the material belt. When the piston end of the cylinder is retracted, the pushing piece rotates upward to the reserved hole position on the material belt, so that the one-way pushing unit 513 will not move the material belt. When the piston end of the cylinder is stretched, the pushing piece rotates downward to the reserved hole position on the material belt and cannot rotate again, at this time it will drive the material belt to move along the stretching direction of the piston end of the cylinder.

[0043] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A cutting automatic feeding spot welder, characterized in that, The utility model provides a kind of welding machine, including body (10), carousel transposition unit (20) is provided on body (10), multiple positioning fixtures (30) are provided around on carousel transposition unit (20), workpiece feeding unit (40) is sequentially provided around on body (10) along carousel transposition unit (20), solder piece feeding and cutting unit (50), welding unit (60) and discharge unit (70) are provided around, workpiece feeding unit (40) is used to direct provide workpiece and place workpiece on positioning fixture (30);Solder piece feeding and cutting unit (50) is connected with tray for cutting the material belt provided by tray into solder piece and then positioning on the positioning fixture (30) where workpiece is placed in advance;Welding unit (60) is used to weld workpiece and solder piece on the positioning fixture (30) where workpiece and solder piece are placed, and discharge unit (70) is used to take out workpiece welded with solder piece; Wherein, solder piece feeding and cutting unit (50) includes material belt directional conveying unit (51), lower pressing block (52) is arranged before material belt directional conveying unit (51), upper cutting block (53) is arranged before lower pressing block (52), positioning pin (54) is arranged on upper cutting block (53), and first manipulator (55) is installed on body (10) for taking and placing solder piece from upper cutting block (53) to positioning fixture (30), solder piece feeding and cutting unit (50) is also provided with lower pressing cylinder (56) and upper pushing cylinder (57) to drive lower pressing block (52) and upper cutting block (53) respectively, when upper cutting block (53) rises, solder piece provided by material belt directional conveying unit (51) is positioned and inserted through positioning pin (54), and then solder piece inserted into positioning pin (54) is cut from material belt through the interaction of lower pressing block (52) and upper cutting block (53).

2. The cutting automatic feeding spot welding machine according to claim 1, characterized in that, Carousel transposition unit (20) includes divider (21) installed on body (10) and carousel main body (22) power connected on divider (21), multiple positioning fixtures (30) are installed equidistantly on the edge position of carousel main body (22).

3. The cutting automatic feeding spot welder according to claim 2, characterized in that, Positioning fixture (30) includes fixture base plate (31) elevated on carousel main body (22), spring lifting plate (32) connected between fixture base plate (31) and carousel main body (22), hooking member (33) connected to the lower end of spring lifting plate (32) and penetrating below carousel main body (22), and multiple limiting strips (34) are installed on lifting plate and can be movably penetrated to fixture base plate (31), multiple limiting strips (34) are used to tightly position the periphery of workpiece and solder piece, and lower pulling cylinder group (35) is installed on body (10) corresponding the position of discharge unit (70) and is connected with hooking member (33).

4. The cutting automatic feeding spot welder according to claim 2, characterized in that, The workpiece feeding unit (40) comprises a workpiece orientation conveying line (41) mounted on the machine body (10), a workpiece preliminary positioning component (42) mounted on the machine body (10) and located between the workpiece orientation conveying line (41) and the rotary table body (22), and a second mechanical arm (43) mounted on the machine body (10), which is used to take and place the workpiece from the workpiece orientation conveying line (41) to the workpiece preliminary positioning component (42), and then take and place the workpiece on the workpiece preliminary positioning component (42) to the corresponding positioning jig (30) synchronously.

5. The cutting automatic feeding spot welder according to claim 1, characterized in that, The material belt orientation conveying unit (51) comprises a lifting frame (511) mounted on the machine body (10), a material belt guide rail (512) mounted on the lifting frame (511), a one-way pushing unit (513) for pushing the material belt mounted on the material belt guide rail (512), and a material belt guide plate (514) mounted on the lifting frame (511) and connected to the material belt guide rail (512) at the feeding end.

6. The cut-to-length automatic feed spot welder of claim 5, wherein, A guide block (515) is also mounted on the lifting frame (511), and the lower pressing block (52) and the upper cutting block (53) are both guided and connected to the guide block (515), and the lower pressing cylinder (56) and the upper pushing cylinder (57) are both mounted on the lower end of the lifting frame (511).

7. The cutting automatic feeding spot welder according to claim 1, characterized in that, The welding unit (60) comprises a fixing frame (61) mounted on the machine body (10), a welding driving cylinder (62) mounted on the fixing frame (61), a transition plate (63) connected in power to the welding driving cylinder (62), and a welding head (64) mounted on the transition plate (63), and the welding head (64) is adjusted to be directly above the positioning jig (30) through the fixing frame (61) and the transition plate (63).

8. The cut-to-length automatic feed spot welder of claim 7, wherein, The welding unit (60) further comprises a linear module (65) mounted vertically on the machine frame of the machine body (10), a fixing seat (66) connected in power to the linear module (65), and a visual identification module (67) fixedly mounted on the fixing seat (66), the transition plate (63) is provided in a ring structure, the welding head (64) is mounted within the inner periphery of the transition plate (63), a light source module (68) is provided around the transition plate (63), and the visual identification module (67) is configured to be directly above the transition plate (63) through the fixing seat (66).

9. The cut-to-length automatic feed spot welder of claim 1, wherein, The discharging unit (70) comprises a third mechanical arm (71) mounted on the machine body (10) and a guide chute (72) mounted on the machine body (10), and the third mechanical arm (71) is used to take and place the workpiece on the positioning jig (30) into the guide chute (72).

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