Automatic spot welding device based on integrated circuit substrate production

Abstract

The invention relates to the technical field of spot welding, in particular to an automatic spot welding device based on integrated circuit substrate production, which is used for spot welding of front and back surfaces of a circuit board and comprises a rack, one end of the rack is a feeding end, the other end of the rack is a discharging end, a clamp horizontally moving from the feeding end to the discharging end is mounted on the rack, and an X-axis guide rail is mounted on the rack. A sliding rod is connected into the X-axis guide rail in a sliding mode, a connecting column is fixedly installed between the sliding rod and the clamp, a gear is fixedly installed on the connecting column, meanwhile, a push-pull rod is rotatably installed on the connecting column in a penetrating mode, and the middle of the X-axis guide rail is provided with a sunken groove which is sunken downwards and an upwards-protruding groove which protrudes upwards. A rack fixedly connected with the X-axis guide rail is fixedly installed on one side of the sinking groove, and the rack is meshed with the gear when making contact with the gear. When the clamp passes through the middle of the X-axis guide rail, the circuit board on the clamp can be driven to automatically turn over from the front side to the back side, and manual disassembly, refixation and spot welding are not needed.

Description

Technical Field

[0001] The invention relates to the technical field of spot welding, and in particular to a self-spot welding device produced based on an integrated circuit substrate. Background Art

[0002] The integrated circuit board is a carrier for carrying integrated circuits. After selective hole processing, chemical copper plating, electroplating copper, etching and other processing are performed to obtain the required circuit pattern, the electronic components need to be spot welded on the front and back. After spot welding the electronic components on the board, power is turned on, the function is realized, and the production is completed.

[0003] The existing patent with announcement number CN213053148U discloses a spot welding device for circuit board manufacturing. The circuit board cannot be flipped and adjusted during use. When spot welding the other side of the circuit board, it needs to be manually disassembled and re-fixed before spot welding the other side. For this reason, the patent CN219372715U designs a device that can automatically flip the other side of the circuit board to the top for spot welding after spot welding on one side of the circuit board is completed. However, in the above patent, personnel need to manually load and unload the circuit board during the spot welding operation. Obviously, this method is not suitable for production lines of large quantities of circuit boards. The circuit boards consume more manpower and material resources when clamping, and there are great limitations.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0005] The purpose of the present invention is to design a device that can automatically load and unload circuit boards, and can flip the front and back of the circuit boards during the loading and unloading process to cooperate with spot welding components for spot welding, so as to solve the above-mentioned deficiencies in the technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-spot welding device based on the production of integrated circuit substrates, used for spot welding the front and back sides of circuit boards, comprising a frame, one end of the frame is a feeding end, and the other end is a feeding end, a fixture that moves horizontally from the feeding end to the feeding end is installed on the frame, an X-axis guide rail is installed on the frame, a slide bar is slidably connected in the X-axis guide rail, a connecting column is fixedly installed between the slide bar and the fixture, a gear is fixedly installed on the connecting column, and a push-pull rod is penetrated and rotatably installed on the connecting column, the middle part of the X-axis guide rail has a downwardly concave sinking groove and an upwardly convex groove, a rack fixedly connected to the X-axis guide rail is fixedly installed on one side of the sinking groove, and meshing occurs when the rack contacts the gear; After the spot welding on the front of the circuit board on the fixture is completed, the fixture moves horizontally from the loading end to the lower feeding end and passes through the rack in the middle of the X-axis guide rail. The gear and rack engage to cause the fixture to flip 90°-180°. At the same time, the slide bar slides out of the slide rail and rotates in the upper convex groove and the lower sinking groove, and finally returns to the X-axis guide rail to ensure that the fixture is parallel to the horizontal plane.

[0007] Preferably, the X-axis guide rail includes an upper guide rail and a lower guide rail, a horizontally arranged guide groove is formed between the upper guide rail and the lower guide rail, the guide groove is slidably connected to the slide rod, the upper convex groove is located on the upper guide rail, the sunken groove is located on the lower guide rail, and the rack is fixedly connected to the side wall of the lower guide rail.

[0008] Preferably, the gear rotates 180° around the central axis of the connecting column from the time when the gear is engaged with the rack until the gear is separated from the rack.

[0009] Preferably, a motor is fixedly mounted on the frame, a threaded rod rotatably connected to the frame is fixedly mounted on the end of the motor output shaft, the threaded rod passes through the push-pull rod and is threadedly connected to the push-pull rod, and sliders are fixedly mounted on both sides of the push-pull rod, which are slidably connected to the guide grooves.

[0010] Preferably, the clamp comprises a rectangular frame fixedly connected to the connecting column, two symmetrically arranged Y-axis slots are provided in the rectangular frame, a clamping rod is slidably connected in the Y-axis slot, and a first spring is fixedly installed between the clamping rod and the rectangular frame.

[0011] Preferably, a strip hole is formed on the side of the clamping rod away from the first spring and on the inner wall of the rectangular frame, a blind hole is formed in the strip hole, and a second spring is fixedly installed in the blind hole.

[0012] Preferably, a Z-axis slide groove is provided in the Y-axis slide groove, a long bolt passes through and is slidably connected in the Z-axis slide groove, and a nut is threadedly connected to the end of the long bolt.

[0013] Preferably, the feeding end of the frame is fixedly connected to a first hydraulic cylinder, a first U-shaped block is fixedly installed on the end of the output shaft of the first hydraulic cylinder, the unloading end of the frame is fixedly installed to a second hydraulic cylinder, a second U-shaped block is fixedly installed on the end of the output shaft of the second hydraulic cylinder, the top and bottom ends of the clamping rod close to the first hydraulic cylinder are fixedly connected to a toggle rod, and the first U-shaped block and the second U-shaped block are both slidably connected to the toggle rod.

[0014] Preferably, an XYZ three-axis module is installed outside the frame, a spot welding assembly is provided on the head of the XYZ three-axis module, a resettable push switch is fixedly installed in the sinking groove, and the push switch is electrically connected to the XYZ three-axis module.

[0015] Preferably, the length of the sinking groove is smaller than the length of the upper convex groove, and the distance between the upper convex groove and the sinking groove is greater than the length of the sliding rod.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are: When the fixture passes through the middle of the X-axis guide rail, the slide bar, the guide groove, the upper convex groove, the lower groove, the gear and the rack cooperate to drive the fixture to flip 180 degrees, so that the circuit board on the fixture can be automatically flipped over, without manual disassembly, re-fixation and spot welding. The present invention provides the slide bar and the guide groove, so that when the spot welding assembly is spot welding the circuit board, the circuit board can always be in a horizontal state, and the stability of the spot welding can be ensured. At the same time, when the front and back sides of the circuit board are turned over, the upper convex groove and the lower sink groove are matched, so that the turning is not affected, and the structure is simple. At the same time, the present invention can automatically drive the clamping rod to clamp the circuit board on the fixture and automatically unload the circuit board from the fixture through the cooperation between the first U-shaped block, the second U-shaped block and the toggle rod, thereby realizing automated production; The invention can realize automatic production by means of forward and reverse rotation of the motor output shaft, in cooperation with the first hydraulic cylinder, the second hydraulic cylinder and the existing spot welding assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the disassembly of the Y-axis slideway and the fixture of the present invention; Figure 3 It is a schematic diagram of the connection between the clamp and the push-pull rod of the present invention; Figure 4 is a first cross-sectional view of the clamp of the present invention; Figure 5 is a second cross-sectional view of the clamp of the present invention; Figure 6 This is a schematic diagram of the connection of the end of the connecting column of the present invention; Figure 7 It is a schematic diagram of the meshing of the gear and the rack of the present invention.

[0019] Description of reference numerals: 1. Rack; 2. Clamp; 2a. Rectangular frame; 2b. Y-axis slide; 2c. Clamping rod; 2d. First spring; 2e. Strip hole; 2f. Blind hole; 2g. Second spring; 2h. Z-axis slide; 2i. Long bolt; 2j. Nut; 3. X-axis guide rail; 3a. Upper guide rail; 3b. Lower guide rail; 3c. Guide groove; 4. Slide rod; 5. Connecting column; 6. Gear; 7. Push-pull rod; 8. Sinking groove; 9. Upper convex groove; 10. Rack; 11. Motor; 12. Threaded rod; 13. Slider; 14. First hydraulic cylinder; 15. First U-shaped block; 16. Second hydraulic cylinder; 17. Second U-shaped block; 18. Toggle rod; 19. XYZ three-axis module; 20. Spot welding assembly; 21. Press switch. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] The present invention provides Figure 1-7 The self-spot welding device shown is based on the production of integrated circuit substrates, which is used for spot welding the front and back sides of circuit boards, including a frame 1, one end of the frame 1 is a feeding end, and the other end is a unloading end. An XYZ three-axis module 19 is installed outside the frame 1, and a spot welding assembly 20 is provided on the head of the XYZ three-axis module 19. A resettable push switch 21 is fixedly installed in the sinking groove 8, and the push switch 21 is electrically connected to the XYZ three-axis module 19. A motor 11 is fixedly installed on the frame 1, and a threaded rod 12 rotatably connected to the frame 1 is fixedly installed at the output end of the motor 11. The threaded rod 12 passes through and is threadedly connected to a push-pull rod 7. Two connecting columns 5 are rotatably installed on the push-pull rod 7, and a clamp 2 is fixedly installed between the two connecting columns 5. The clamp 2 is used to clamp the circuit board. At this time, the output shaft of the motor 11 drives the threaded rod 12 to rotate, and the push-pull rod 7 can be used to drive the clamp 2 to move horizontally from one end of the feeding end to the unloading end; The fixture 2 mainly includes a rectangular frame 2a fixedly connected between two connecting columns 5, two Y-axis slide grooves 2b are provided on opposite sides of the rectangular frame 2a, a clamping rod 2c is slidably connected in the Y-axis slide groove 2b, a first spring 2d is fixedly installed between the clamping rod 2c and the rectangular frame 2a, the first spring 2d pushes the clamping rod 2c to clamp the circuit board on the rectangular frame 2a, and in order to ensure the stability of clamping, a strip hole 2e for accommodating the edge of the circuit board is also provided on the opposite sides of the clamping rod 2c and the rectangular frame 2a. A blind hole 2f is opened in the strip hole 2e, and a second spring 2g is fixedly installed in the blind hole 2f. The second spring 2g can push the circuit board into the strip hole 2e. In order to prevent the clamping force from being too large, a Z-axis slide groove 2h is opened in the Y-axis slide groove 2b. A long bolt 2i runs through and slidably connects the Z-axis slide groove 2h. A nut 2j is threadedly connected to the end of the long bolt 2i. The long bolt 2i is located at different positions of the Z-axis slide groove 2h to limit the maximum distance that the clamping rod 2c moves in the Y-axis slide groove 2b. The frame 1 is provided with a horizontally arranged X-axis guide rail 3, which includes an upper guide rail 3a and a lower guide rail 3b, and a horizontally arranged guide groove 3c is formed between the upper guide rail 3a and the lower guide rail 3b, and the connecting column 5 slides horizontally in the guide groove 3c. In order to ensure that the fixture 2 rotates in the middle of the X-axis guide rail 3 so that the front and back sides can be turned over, we have fixedly installed a gear 6 on the connecting column 5, and fixedly installed a rack 10 on the lower guide rail 3b, so that after the gear 6 is engaged with the rack 10, the gear 6 will drive the connecting column 5, thereby driving the fixture 2 to rotate, so that the front and back sides of the fixture 2 can be turned over; in order to ensure that the fixture 2 will not rotate around the connecting column 5 when the spot welding assembly 20 spot welds the upper surface of the circuit board, we have also fixedly connected a slide bar 4 to the connecting column 5. The slide bar 4 slides horizontally in the guide groove 3c. Since the connecting column 5 will drive the slide bar 4 to rotate after the gear 6 and the rack 10 are engaged, we set an upper convex groove 9 on the upper guide rail 3a and a sinking groove 8 on the lower guide rail 3b. In this way, the slide bar 4 will rotate when it moves from the guide groove 3c to between the upper convex groove 9 and the sinking groove 8, and then return to the guide groove 3c to continue to move horizontally after the rotation. At the same time, we can set the length of the rack 10, as long as it is ensured that the gear 6 and the rack 10 are engaged to cause the fixture 2 to flip 90°-180°. If it does not reach 180°, the inertia generated by the rotation will drive the slide bar 4 to rotate until the bottom surface of the slide bar 4 contacts the top surface of the lower guide rail 3b. Of course, it is best to rotate the gear 6 180°. In order to realize automatic loading and unloading, we have a first hydraulic cylinder 14 fixedly connected to the loading end, a first U-shaped block 15 fixedly installed at the end of the output shaft of the first hydraulic cylinder 14, a second hydraulic cylinder 16 fixedly installed at the unloading end of the frame 1, a second U-shaped block 17 fixedly installed at the end of the output shaft of the second hydraulic cylinder 16, and a toggle rod 18 fixedly connected to the top and bottom of the clamping rod 2c close to the first hydraulic cylinder 14. The first U-shaped block 15 and the second U-shaped block 17 are both slidably connected to the toggle rod 18. In this way, when the toggle rod 18 on the clamp 2 moves to the first U-shaped block 15 or the second U-shaped block 17, it is only necessary to drive the output shafts of the first hydraulic cylinder 14 and the second hydraulic cylinder 16 to extend or shorten, so that the clamping rod 2c can clamp or unload the circuit board; The overall working process of this product is as follows: a common mechanical arm in the prior art is used to move the circuit board into the rectangular frame 2a, and then the first hydraulic cylinder 14 drives the toggle rod 18 through the first U-shaped block 15. The toggle rod 18 drives the clamping rod 2c to approach the circuit board, so that the circuit board is inserted into the two bar holes 2e, and the second spring 2g is squeezed into the blind hole 2f. At this time, the output shaft of the motor 11 rotates to drive the fixture 2 to move horizontally in the guide groove 3c. When the toggle rod 18 is separated from the first U-shaped block 15, the motor 11 stops rotating. At this time, the head of the XYZ three-axis module 19 commonly used in the prior art has a spot welding assembly 20 to spot weld the horizontal front side of the circuit board. Since the slide bar 4 is horizontally arranged in the guide groove 3c, it can ensure that the circuit board is always in a horizontal state. After the spot welding is completed, the output shaft of the motor 11 continues to rotate, and the drive fixture 2 continues to move horizontally. When the gear 6 is engaged with the rack 10, the gear 6 will drive the connecting column 5 to rotate, and the connecting column 5 will drive the circuit board to rotate through the rectangular frame 2a, and the slide bar 4 will move from the guide groove 3c to the upper convex groove 9 and the sinking groove 8 and rotate therein. When the rack 10 and the gear 6 are separated, the slide bar 4 will fit with the lower guide rail 3b again, and then slide into the guide groove 3c to ensure that the rectangular frame 2a cannot continue to rotate. At this time, the circuit board will be turned over, and the resettable press switch 21 will be triggered when the slide bar 4 rotates in the sinking groove 8. When the output shaft of the motor 11 stops rotating, the XYZ three-axis module 19 drives the spot welding assembly 20 to move to the top of the circuit board. The circuit board is turned over for spot welding, and then the motor 11 continues to drive the clamp 2 to move toward the lower feeding end until the upward flipped toggle rod 18 on the clamping rod 2c slides into the second U-shaped block 17. At this time, the output shaft of the second hydraulic cylinder 16 is shortened, so that the clamp 2 no longer clamps the circuit board, the first spring 2d is compressed, and the two second springs 2g squeeze the circuit board out of the strip hole 2e, and the circuit board falls to the bottom of the frame 1 to realize automatic unloading. A conveyor belt can be installed just below the circuit board unloading to realize automatic feeding.

[0023] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are exemplary only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. A self-spot welding device based on integrated circuit substrate production, used for spot welding the front and back sides of a circuit board, comprising a frame (1), one end of the frame (1) is a loading end, and the other end is a unloading end, and a fixture (2) is installed on the frame (1) and moves horizontally from the loading end to the unloading end, characterized in that: The frame (1) is provided with an X-axis guide rail (3), a slide bar (4) is slidably connected inside the X-axis guide rail (3), a connecting column (5) is fixedly installed between the slide bar (4) and the clamp (2), a gear (6) is fixedly installed on the connecting column (5), and a push-pull rod (7) is rotatably installed through the connecting column (5), the middle part of the X-axis guide rail (3) has a downwardly concave sinking groove (8) and an upwardly protruding upper groove (9), a rack (10) fixedly connected to the X-axis guide rail (3) is fixedly installed on one side of the sinking groove (8), and meshing occurs when the rack (10) contacts the gear (6); After the spot welding of the front side of the circuit board on the fixture (2) is completed, the fixture (2) moves horizontally from the feeding end to the lower feeding end and passes through the rack (10) in the middle of the X-axis guide rail (3). The gear (6) and the rack (10) are meshed, causing the fixture (2) to flip 90°-180°. At the same time, the slide bar (4) slides out of the slide rail and rotates in the upper convex groove (9) and the lower sinking groove (8), and finally returns to the X-axis guide rail (3) to ensure that the fixture (2) is parallel to the horizontal plane.

2. A self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: The X-axis guide rail (3) comprises an upper guide rail (3a) and a lower guide rail (3b), a horizontally arranged guide groove (3c) is formed between the upper guide rail (3a) and the lower guide rail (3b), the guide groove (3c) is slidably connected to the slide bar (4), the upper convex groove (9) is located on the upper guide rail (3a), the sunken groove (8) is located on the lower guide rail (3b), and the rack (10) is fixedly connected to the side wall of the lower guide rail (3b).

3. A self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: Starting from the moment when the gear (6) and the rack (10) are meshed, until the gear (6) and the rack (10) are separated, the gear (6) rotates 180 degrees around the central axis of the connecting column (5).

4. A self-spot welding device based on integrated circuit substrate production according to claim 2, characterized in that: A motor (11) is fixedly mounted on the frame (1); a threaded rod (12) rotatably connected to the frame (1) is fixedly mounted on the end of the output shaft of the motor (11); the threaded rod (12) passes through the push-pull rod (7) and is threadedly connected to the push-pull rod (7); sliders (13) are also fixedly mounted on both sides of the push-pull rod (7); the sliders (13) are slidably connected to the guide grooves (3c).

5. The self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: The clamp (2) comprises a rectangular frame (2a) fixedly connected to the connecting column (5), two symmetrically arranged Y-axis sliding grooves (2b) are provided in the rectangular frame (2a), a clamping rod (2c) is slidably connected in the Y-axis sliding groove (2b), and a first spring (2d) is fixedly installed between the clamping rod (2c) and the rectangular frame (2a).

6. A self-spot welding device based on integrated circuit substrate production according to claim 5, characterized in that: A strip hole (2e) is formed on the side of the clamping rod (2c) away from the first spring (2d) and on the inner wall of the rectangular frame (2a), a blind hole (2f) is formed in the strip hole (2e), and a second spring (2g) is fixedly installed in the blind hole (2f).

7. A self-spot welding device based on integrated circuit substrate production according to claim 6, characterized in that: A Z-axis slide groove (2h) is provided in the Y-axis slide groove (2b), a long bolt (2i) passes through and is slidably connected to the Z-axis slide groove (2h), and a nut (2j) is threadedly connected to the end of the long bolt (2i).

8. The self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: A first hydraulic cylinder (14) is fixedly connected to the feeding end of the frame (1), a first U-shaped block (15) is fixedly mounted on the end of the output shaft of the first hydraulic cylinder (14), a second hydraulic cylinder (16) is fixedly mounted on the feeding end of the frame (1), a second U-shaped block (17) is fixedly mounted on the end of the output shaft of the second hydraulic cylinder (16), a top end and a bottom end of the clamping rod (2c) close to the first hydraulic cylinder (14) are fixedly connected to a toggle rod (18), and the first U-shaped block (15) and the second U-shaped block (17) are both slidably connected to the toggle rod (18).

9. The self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: An XYZ three-axis module (19) is installed outside the frame (1), a spot welding assembly (20) is provided on the head of the XYZ three-axis module (19), a resettable push switch (21) is fixedly installed in the sinking groove (8), and the push switch (21) is electrically connected to the XYZ three-axis module (19).

10. The self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: The length of the sinking groove (8) is smaller than the length of the upper convex groove (9), and the distance between the upper convex groove (9) and the sinking groove (8) is greater than the length of the sliding rod (4).

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