A self-spot welding device based on integrated circuit substrate production

Abstract

The present invention relates to the field of spot welding technology, and specifically to a self-spot welding device based on the production of integrated circuit substrates, which is used for spot welding the front and back sides of a circuit board. The device comprises a frame, one end of the frame is a loading end, and the other end is a unloading end. A clamp is installed on the frame and moves horizontally from the loading end to the lower end. The frame is provided with an X-axis guide rail, and a slide bar is slidably connected in the X-axis guide rail. A connecting column is fixedly installed between the slide bar and the clamp, and a gear is fixedly installed on the connecting column. At the same time, a push-pull rod is passed through 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 protruding upper groove, and 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. When the clamp passes through the middle of the X-axis guide rail, the circuit board on the clamp is driven to automatically flip over the front and back sides, without the need for manual disassembly, re-fixing and then spot welding.

Description

Technical Field

[0001] The present 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] An integrated circuit board (IC) is a carrier that holds integrated circuits. After selectively undergoing hole machining, electroless copper plating, electroplating, and etching to create the desired circuit pattern, electronic components are then soldered to both sides. Once soldered, the board is powered on, functioning, and production is complete.

[0003] The existing patent with announcement number CN213053148U discloses a spot welding device for circuit board manufacturing. During use, the circuit board cannot be flipped and adjusted. 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, the circuit board needs to be manually loaded and unloaded by personnel during the spot welding operation. Obviously, this method is not suitable for production lines of large quantities of circuit boards. The circuit boards consume a lot of 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 form the prior art that is already known to a person 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 shortcomings 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, which is used for spot welding the front and back sides of circuit boards, comprising a frame, one end of the frame being a loading end, and the other end being a unloading end, a clamp which moves horizontally from the loading end to the unloading end is installed on the frame, an X-axis guide rail is installed on the frame, a slide rod is slidably connected in the X-axis guide rail, a connecting column is fixedly installed between the slide rod and the clamp, 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 protruding upper groove, a rack which is 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;

[0007] After the spot welding of the front side 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, causing the fixture to flip 90°-180°. At the same time, the slide rod 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.

[0008] 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.

[0009] 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.

[0010] 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 groove.

[0011] Preferably, the clamp includes a rectangular frame fixedly connected to the connecting column, two symmetrically arranged Y-axis slots are opened 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.

[0012] 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.

[0013] 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.

[0014] Preferably, the feeding end of the frame is fixedly connected to a first hydraulic cylinder, and 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 with a second hydraulic cylinder, and 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.

[0015] 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.

[0016] Preferably, the length of the sunken groove is smaller than the length of the upper convex groove, and the distance between the upper convex groove and the sunken groove is greater than the length of the sliding rod.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0018] When the fixture passes through the middle of the X-axis guide rail, the sliding rod, guide groove, upper convex groove, lower groove, gear and 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.

[0019] The present invention provides a sliding rod and a guide groove, so that when the spot welding assembly is spot welding the circuit board, the circuit board can always be kept in a horizontal state, thereby ensuring the stability of the spot welding. At the same time, when the front and back sides of the circuit board are driven to flip, the upper convex groove and the lower sinking groove are matched, so that the flipping is not affected, and the structure is simple.

[0020] 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;

[0021] The present invention can realize automated production by means of forward and reverse rotation of the motor output shaft, in conjunction with the first hydraulic cylinder, the second hydraulic cylinder and the existing spot welding assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. 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.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the Y-axis slide and fixture disassembly of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection between the clamp and the push-pull rod of the present invention;

[0026] Figure 4 is a first cross-sectional view of the clamp of the present invention;

[0027] Figure 5 is a second cross-sectional view of the clamp of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection of the connecting column end portion of the present invention;

[0029] Figure 7 Schematic diagram of the meshing of the gear and rack of the present invention.

[0030] Description of reference numerals:

[0031] 1. Frame; 2. Clamp; 2a. Rectangular frame; 2b. Y-axis slide; 2c. Clamping rod; 2d. First spring; 2e. Bar 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

[0032] In order to help those skilled in the art 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 embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] The present invention provides Figure 1-7 The self-spot welding device shown is based on the production of integrated circuit substrates and is used for spot welding the front and back sides of circuit boards. It includes a frame 1, one end of the frame 1 is a loading 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 press switch 21 is fixedly installed in the sinking tank 8, and the press 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 on 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 loading end to the unloading end;

[0035] The fixture 2 mainly includes a rectangular frame 2a fixedly connected between two connecting columns 5. Two Y-axis slide grooves 2b are opened 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. In order to ensure the stability of the clamping, we also open a strip hole 2e on the opposite side of the clamping rod 2c and the rectangular frame 2a to accommodate the edge of the circuit board. 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 2h is opened in the Y-axis slide 2b. A long bolt 2i passes through and slides in the Z-axis slide 2h. A nut 2j is threadedly connected to the end of the long bolt 2i. The long bolt 2i is placed in different positions of the Z-axis slide 2h to limit the maximum distance that the clamping rod 2c can move in the Y-axis slide 2b.

[0036] 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. 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 and the front and back sides are flipped, a gear 6 is fixedly installed on the connecting column 5, and a rack 10 is fixedly installed on the lower guide rail 3b. In this way, 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 and flipping the front and back sides of the fixture 2; 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 also fixedly connect the sliding rod 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 is engaged with the rack 10, we set an upper convex groove 9 on the upper guide rail 3a and a sunken 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 sunken 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 is engaged with the rack 10, the fixture 2 will be flipped 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 make the gear 6 rotate 180°.

[0037] 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 is fixedly installed on the end of the output shaft of the first hydraulic cylinder 14, a second hydraulic cylinder 16 is fixedly installed on the unloading end of the frame 1, and a second U-shaped block 17 is fixedly installed on the end of the output shaft of the second hydraulic cylinder 16. The top and bottom ends 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. 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.

[0038] The overall working process of this product is as follows: the 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 close to 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 clamp 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 XYZ three-axis module 19 commonly used in the prior art has a spot welding assembly 20 on the head to spot weld the horizontal front 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 clamp 2 continues to move horizontally. When the gear 6 engages 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 lower groove 8 and rotate therein. When the rack 10 and the gear 6 separate, 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 slide bar 4 will also trigger the resettable press switch 21 when rotating in the lower 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-turned 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. 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.

[0039] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should readily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., the size, scale, structure, shape and proportion of various components, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientation changes, etc.).

Claims

1. 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 (1), one end of the frame (1) is a feeding end, and the other end is a feeding end, and a clamp (2) is installed on the frame (1) and moves horizontally from the feeding end to the feeding end, characterized in that: The clamp (2) is provided with a toggle rod (18) for driving the clamp (2) to clamp and release. The feeding end of the frame (1) is fixedly connected to a first hydraulic cylinder (14). The output shaft end of the first hydraulic cylinder (14) is fixedly provided with a first U-shaped block (15). The unloading end of the frame (1) is fixedly provided with a second hydraulic cylinder (16). The output shaft end of the second hydraulic cylinder (16) is fixedly provided with a second U-shaped block (17). Both the first U-shaped block (15) and the second U-shaped block (17) are slidably connected to the toggle rod (18). The frame (1) is provided with an X-axis guide rail (3). The X-axis guide rail (3) is provided with a ) is slidably connected with a slide bar (4), 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 passed through and rotatably installed on 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 resettable press switch (21) is fixedly installed in the sinking groove (8), and a rack (10) fixedly connected to the X-axis guide rail (3) is fixedly installed on one side of the sinking groove (8), and the rack (10) is engaged with the gear (6) when it contacts. The X-axis guide rail (3) includes 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 sinking 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); 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), and sliders (13) are fixedly mounted on both sides of the push-pull rod (7), and the sliders (13) are slidably connected to the guide groove (3c); After the front surface of the circuit board on the fixture (2) is spot-welded, the fixture (2) moves horizontally from the feeding end to the feeding end and passes through the rack (10) in the middle of the X-axis guide rail (3). The gear (6) engages with the rack (10) and causes the fixture (2) to flip 90°-180°. At the same time, the slide bar (4) slides out of the guide groove (3c) and rotates in the upper convex groove (9) and the lower sinking groove (8), and finally returns to the guide groove (3c) to ensure that the fixture (2) is parallel to the horizontal plane.

2. The self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: From the moment the gear (6) and the rack (10) engage with each other until the gear (6) and the rack (10) separate, the gear (6) rotates 180° around the central axis of the connecting column (5).

3. The self-spot welding device based on integrated circuit substrate production according to claim 1, characterized in that: The clamp (2) includes 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).

4. The self-spot welding device based on integrated circuit substrate production according to claim 3, characterized in that: A strip hole (2e) is provided 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 provided in the strip hole (2e); and a second spring (2g) is fixedly installed in the blind hole (2f).

5. The self-spot welding device based on integrated circuit substrate production according to claim 4, 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).

6. The self-spot welding device based on integrated circuit substrate production according to claim 3, characterized in that: The number of the toggle rods (18) is set to two and they are respectively located at the top and bottom of the clamp (2); the top and bottom ends of the clamping rod (2c) close to the first hydraulic cylinder (14) are fixedly connected to the toggle rods (18).

7. 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), and the push switch (21) is electrically connected to the XYZ three-axis module (19).

8. 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 larger than the length of the sliding rod (4).

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