A positioning tool for welding and coding of a PCBA board on a new energy vehicle

Abstract

This invention discloses a positioning fixture for welding and marking PCBA boards in new energy vehicles, belonging to the field of welding technology. It includes a worktable with a clamping assembly for the PCBA board mounted on its upper side. The clamping assembly includes a rotating groove on the upper side of the worktable, within which a first threaded rod is rotatably connected. Two sets of first threaded rings are threaded onto the outer side of the first threaded rod. A connecting plate is fixedly connected to the upper side of the two sets of first threaded rings. The connecting plate slides through the rotating groove and is slidably connected to it. A movable plate is fixedly connected to the upper side of the connecting plate. This invention uses two sets of first clamping plates and two sets of second clamping plates to complete the clamping and fixing operation of the PCBA board in two different directions, achieving good clamping and fixing effect. During this process, simply rotating the first threaded rod allows the two first clamping plates and two second clamping plates to move, making the operation simple and the clamping effect excellent.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a positioning fixture for welding and marking PCBA boards in new energy vehicles. Background Technology

[0002] Printed circuit boards, also known as printed circuit boards or printed circuit boards, are important electronic components. They serve as the support for electronic components and the provider of circuit connections for electronic components. PCBA boards refer to the entire process of a bare PCB board through SMT assembly or DIP insertion. In new energy vehicles, printed circuit boards are a very important component. During the processing of printed circuit boards, they need to be fixed on a fixed platform first, and then the corresponding soldering and marking operations are performed.

[0003] While the positioning fixture has a simple overall structure and low cost, in actual operation, when it is necessary to use the positioning fixture to clamp and fix the printed circuit board, the overall operation is cumbersome, time-consuming, and labor-intensive. It also requires multiple connectors to ensure the overall stability of the positioning fixture. Too many connectors will affect the normal processing effect of the printed circuit board. Furthermore, the positioning fixture can only perform the operation of clamping and fixing the printed circuit board, which is relatively simple and has no other promotional effects. Therefore, a positioning fixture for soldering and marking PCBA boards in new energy vehicles is provided. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning fixture for welding and marking PCBA boards in new energy vehicles.

[0005] The present invention adopts the following technical solution:

[0006] A positioning fixture for soldering and marking PCBA boards in new energy vehicles includes a worktable. A clamping assembly for the PCBA board is mounted on the upper side of the worktable. The clamping assembly includes a rotating groove on the upper side of the worktable. A first threaded rod is rotatably connected within the rotating groove. Two sets of first threaded rings are threaded onto the outer side of the first threaded rod. A connecting plate is fixedly connected to the upper side of the two sets of first threaded rings. The connecting plate slides through the rotating groove and is slidably connected to it. A movable plate is fixedly connected to the upper side of the connecting plate. Two sets of first clamping plates are slidably connected to the upper side of the worktable. A first spring is fixedly connected between the two sets of first clamping plates and the movable plate. Two sets of second clamping plates are slidably connected to the side of the first clamping plates away from the movable plate. A rotating block is rotatably connected to the side wall of the first clamping plate, and the rotating block is located between the two sets of second clamping plates.

[0007] Preferably, a second threaded ring is rotatably connected inside the movable plate, and a second threaded rod is threadedly sleeved inside the second threaded ring. The second threaded rod passes through the movable plate and is fixedly connected to a first clamping plate. Two sets of sliding plates are slidably connected inside the movable plate. A rack is fixedly connected to the side wall of the two sets of sliding plates. A gear is fixedly sleeved on the outer side of the second threaded ring. The gear meshes with the rack. A first connecting rod is fixedly connected to the side wall of the two sets of sliding plates. The first connecting rod is fixedly connected to a second clamping plate.

[0008] Preferably, a self-locking assembly is installed inside the first clamping plate. The self-locking assembly includes multiple sets of positioning holes opened on the upper side of the worktable. Two sets of control rods are slidably sleeved inside the first clamping plate. The upper side of the two sets of control rods is fixedly connected to the same control plate. A second spring is fixedly connected between the control plate and the first clamping plate. Multiple sets of stop rods are evenly fixedly connected to the outer side of the control rods. The side walls of the two sets of second clamping plates are each opened with a moving groove. Both sides of the moving groove are opened with inclined grooves. The two sets of inclined grooves are slidably connected to the same inclined rod. A moving rod is fixedly sleeved on the outer side of the inclined rod. A third spring is fixedly connected between the moving rod and the moving groove. A second connecting rod is fixedly connected to the side wall of the moving rod. A baffle is fixedly connected to the side wall of the second connecting rod. The baffle and the stop rod are opposite each other.

[0009] Preferably, a torsion spring is fixedly connected between the rotating block and the first clamping plate. A control component for controlling the rotation of the rotating block is installed inside the first clamping plate. The control component includes multiple sets of inclined plates that are uniformly fixedly connected to the outside of the rotating block. Multiple sets of fixed rods are uniformly fixedly connected to the side wall of one of the control rods. The side walls of the multiple sets of fixed rods are provided with sliding grooves. A sliding rod is slidably connected in the sliding groove. A fourth spring is fixedly connected between the sliding rod and the sliding groove. The sliding rod and the inclined plate are opposite each other.

[0010] Preferably, a fixing plate is slidably connected to the outer sides of both second clamping plates, and a connecting spring is fixedly connected between the fixing plate and the second clamping plate. Multiple sets of transmission rods are rotatably connected to the sidewall of the fixing plate, and transmission gears are fixedly sleeved on the outer sides of the multiple sets of transmission rods. Multiple sets of cleaning rods are also rotatably connected to the sidewall of the fixing plate, and cleaning cylinders are slidably sleeved on the outer sides of the multiple sets of cleaning rods. Cleaning gears are also fixedly sleeved on the outer sides of the multiple sets of cleaning rods. The cleaning gears mesh with the transmission gears. Two sets of connecting grooves are opened on the sidewall of the first clamping plate. One end of one of the transmission rods extends into the connecting groove, and a connecting gear is fixedly connected to the end of this transmission rod. Connecting racks are fixedly connected to the inner sidewalls of both sets of connecting grooves, and the connecting gears mesh with the connecting racks.

[0011] Preferably, the outer sides of the inclined plate and the slide bar are both smoothly finished.

[0012] Preferably, anti-slip rubber pads are fixedly fitted to the outer sides of both the first clamping plate and the second clamping plate.

[0013] Preferably, a handle is fixedly connected to the outer side of the first threaded rod.

[0014] The beneficial effects of this invention are:

[0015] 1. First, the PCBA board is clamped and fixed in two different directions by two sets of first clamping plates and two sets of second clamping plates. The clamping and fixing effect is good. In this process, the two first clamping plates and two second clamping plates can be moved by simply rotating the first threaded rod. The operation is simple and the clamping effect is good.

[0016] 2. Furthermore, during this process, when rotating the first threaded rod, the control board and control rod as a whole will only move downward when both the first and second clamping plates are tightly pressed against the PCBA board, thereby completing the self-locking phenomenon between the first clamping plate and the worktable, thus improving the clamping effect and reducing the occurrence of excessive clamping force that could damage the PCBA board.

[0017] 3. Finally, during the disassembly of the PCBA board, the PCBA board can be shaken to simulate the usage environment of the PCBA board in new energy vehicles. At this time, the tightness of the connection between the PCBA board and the soldered parts can be checked, which improves the inspection effect.

[0018] 4. During the above process, the coding position can also be cleaned, and after coding is completed, a simple squeezing operation can be performed on the coding position to better complete the detection of coding effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the positioning fixture for welding and marking PCBA boards in new energy vehicles proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the connection between the moving plate and the first threaded rod in a positioning fixture for welding and marking PCBA boards on new energy vehicles proposed in this invention.

[0021] Figure 3 This is a schematic diagram showing the connection of the moving plate, the first clamping plate, and the second clamping plate in a positioning fixture for welding and marking PCBA boards on new energy vehicles proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the internal connection of the moving board in a positioning fixture for welding and marking PCBA boards in new energy vehicles, as proposed in this invention.

[0023] Figure 5This is a top view of the connection between the second clamping plate and the cleaning plate in a positioning fixture for welding and marking PCBA boards on new energy vehicles, as proposed in this invention.

[0024] Figure 6 This is a schematic diagram of the connection of the inclined groove and inclined rod in the positioning fixture for welding and marking PCBA boards on new energy vehicles proposed in this invention;

[0025] Figure 7 This is a schematic diagram of the internal connection of the first clamping plate in a positioning fixture for welding and marking PCBA boards on new energy vehicles proposed in this invention.

[0026] Figure 8 This is a top view of the rotating block, inclined plate, and sliding rod in a positioning fixture for welding and marking PCBA boards on new energy vehicles, as proposed in this invention.

[0027] Figure 9 This is a cross-sectional view of the fixing rod in a positioning fixture for welding and marking PCBA boards on new energy vehicles, as proposed in this invention.

[0028] Figure 10 This is a top view of the worktable connection in a positioning fixture for welding and marking PCBA boards on new energy vehicles, as proposed in this invention.

[0029] Figure 11 This is a cross-sectional view showing the connection between the second clamping plate and the fixing plate in a positioning fixture for welding and marking PCBA boards on new energy vehicles, as proposed in this invention.

[0030] In the diagram: 1. Workbench, 2. Rotating groove, 3. Moving plate, 4. First clamping plate, 5. Second clamping plate, 6. Positioning hole, 7. First threaded rod, 8. First threaded ring, 9. Second threaded rod, 10. First connecting rod, 11. First spring, 12. Moving rod, 13. Rotating block, 14. Second threaded ring, 15. Gear, 16. Rack, 17. Slide plate, 18. Moving groove, 19. Control plate, 20. Second spring, 21. Control rod, 22. Baffle, 23. Second connecting rod, 24. Inclined groove, 25. Inclined rod, 26. Third spring, 27. Fixed rod, 28. Stop rod, 29. Inclined plate, 30. Torsion spring, 31. Slide rod, 32. Fourth spring, 33. Slide groove, 34. Fixed plate, 35. Transmission rod, 36. Transmission gear, 37. Cleaning rod, 38. Cleaning gear, 39. Cleaning cylinder, 40. Connecting groove, 41. Connecting gear, 42. Connecting rack, 43. Connecting spring. Detailed Implementation

[0031] See Figures 1-11 A positioning fixture for welding and marking PCBA boards on new energy vehicles includes a worktable 1, on the upper side of which a clamping component for PCBA boards is installed.

[0032] like Figure 1 , Figure 2 , Figure 3 The clamping assembly includes a rotating groove 2 on the upper side of the worktable 1. A first threaded rod 7 is rotatably connected in the rotating groove 2. Two sets of first threaded rings 8 are threadedly sleeved on the outer side of the first threaded rod 7. A connecting plate is fixedly connected to the upper side of the two sets of first threaded rings 8. The connecting plate passes through the rotating groove 2 and is slidably connected to the rotating groove 2. A moving plate 3 is fixedly connected to the upper side of the connecting plate. Two sets of first clamping plates 4 are slidably connected on the upper side of the worktable 1. A first spring 11 is fixedly connected between the two sets of first clamping plates 4 and the moving plate 3. Two sets of second clamping plates 5 are slidably connected to the side of the first clamping plate 4 away from the moving plate 3. A rotating block 13 is rotatably connected to the side wall of the first clamping plate 4. The rotating block 13 is located between the two sets of second clamping plates 5. A handle is fixedly connected to the outer side of the first threaded rod 7, which can better rotate the first threaded rod 7. Anti-slip rubber pads are fixedly sleeved on the outer sides of the first clamping plate 4 and the second clamping plate 5, which can better complete the clamping and fixing operation of the PCBA board and maintain the clamping and fixing effect.

[0033] First, the threads on both sides of the first threaded rod 7 have opposite directions of rotation. Therefore, when the first threaded rod 7 is rotated, the two first threaded rings 8 will move away from or towards each other. The PCBA board to be processed is placed between the two first clamping plates 4 and the two second clamping plates 5. Rotating the first threaded rod 7 will cause the two first threaded rings 8 to move towards each other because the first threaded rings 8 are fixedly connected to the connecting plate and the connecting plate is slidably connected to the rotating groove 2. The first threaded rod 7 will then cause the two first threaded rings 8 to move towards each other. The first threaded rings 8 will drive the moving plate 3 to move towards each other. The moving plate 3 will drive the first clamping plate 4 to move towards each other through the first spring 11 until the first clamping plate 4 and the PCBA board come into contact and the first spring 11 is compressed. This completes the initial clamping and fixing operation of the PCBA board.

[0034] like Figure 3 , Figure 4 A second threaded ring 14 is rotatably connected inside the movable plate 3. A second threaded rod 9 is threadedly sleeved inside the second threaded ring 14. The second threaded rod 9 passes through the movable plate 3 and is fixedly connected to the first clamping plate 4. Two sets of sliding plates 17 are slidably connected inside the movable plate 3. A rack 16 is fixedly connected to the side wall of the two sets of sliding plates 17. A gear 15 is fixedly sleeved on the outer side of the second threaded ring 14. The gear 15 and the rack 16 mesh with each other. A first connecting rod 10 is fixedly connected to the side wall of the two sets of sliding plates 17. The first connecting rod 10 is fixedly connected to the second clamping plate 5.

[0035] As the movable plate 3 moves closer to the other side, it drives the first clamping plate 4 to move via the first spring 11. When the first clamping plate 4 comes into contact with the PCBA board, the PCBA board creates an obstruction to the first clamping plate 4, causing it to stop. However, under the action of the first threaded rod 7 and the first threaded ring 8, the movable plate 3 continues to move closer to the other side, causing the first spring 11 to be compressed. The second threaded rod 9, relative to the movable plate 3 (with... Figure 3 Based on the direction, it moves to the left, the second threaded rod 9 drives the second threaded ring 14 to rotate, the second threaded ring 14 drives the gear 15 to rotate, the gear 15 drives the two racks 16 to move, see attached. Figure 4 From the perspective of the rack, the left rack 16 moves downward and the right rack 16 moves upward. That is, the left rack 16 is fixedly connected to the upper second clamping plate 5 through the first connecting rod 10, and the right rack 16 is fixedly connected to the lower second clamping plate 5 through the first connecting rod 10. Therefore, the two second clamping plates 5 can be brought closer to each other until the two second clamping plates 5 and the PCBA board are in contact, thereby completing the clamping and fixing operation of the PCBA board in two different directions.

[0036] like Figure 5 , Figure 11 Two second clamping plates 5 are slidably connected to the outer sides of a fixed plate 34. A connecting spring 43 is fixedly connected between the fixed plate 34 and the second clamping plate 5. Multiple sets of transmission rods 35 are rotatably connected to the side wall of the fixed plate 34. Transmission gears 36 are fixedly sleeved on the outer side of the multiple sets of transmission rods 35. Multiple sets of cleaning rods 37 are also rotatably connected to the side wall of the fixed plate 34. A cleaning cylinder 39 is slidably sleeved on the outer side of the multiple sets of cleaning rods 37. A cleaning gear 38 is fixedly sleeved on the outer side of the multiple sets of cleaning rods 37. The cleaning gear 38 and the transmission gear 36 mesh with each other. Two sets of connecting grooves 40 are opened on the side wall of the first clamping plate 4. One end of one of the transmission rods 35 extends into the connecting groove 40, and a connecting gear 41 is fixedly connected to the end of this transmission rod 35. Connecting racks 42 are fixedly connected to the inner side walls of both sets of connecting grooves 40. The connecting gear 41 and the connecting rack 42 mesh with each other.

[0037] First, a cleaning cloth is fixedly sleeved on the outside of the cleaning cylinder 39. The diameter of the cleaning cylinder 39 is set to be higher than the height of the second clamping plate 5. Therefore, when the cleaning cylinder 39 and the cleaning cloth move with the second clamping plate 5, the cleaning cloth on the cleaning cylinder 39 abuts against the PCBA board before the second clamping plate 5. Second, as the second clamping plate 5 moves closer to the other side, the second clamping plate 5 drives the fixing plate 34 to move. The fixing plate 34 drives the cleaning rods 37 and the cleaning cylinder 39 to move downwards. Since the connecting rack 42 is stationary, the connecting gear 41, which moves with the transmission rod 35 and the fixing plate 34, rotates. The connecting gear 41 drives the transmission rod 35 to rotate. Under the action of the cleaning gear 38 and the connecting gear 41, all the cleaning rods 37 rotate. The cleaning rods 37 drive the cleaning cylinder 39 to rotate. Before the two second clamping plates 5 abut against the PCBA board, the cleaning cylinder 39 has already abutted against the PCBA board. At this time, the cleaning cylinder 39 is in contact with the PCBA board. The second clamping plate 5 stops moving due to the obstruction of the board, but continues to move closer to the PCBA board. During this process, the connecting spring 43 is stretched. The elastic force generated by the connecting spring 43 acts on the PCBA board through the cleaning cylinder 39, forming a squeezing and wiping effect on the PCBA board to keep it clean. When it is necessary to perform a coding operation on the PCBA board, the cleaning cylinder 39 is moved closer to the second clamping plate 5 to expose the position on the PCBA board that needs to be coded, and the coding operation can begin. After the coding operation is completed, the cleaning cylinder 39 is moved back to its original position. When the PCBA board is disassembled, at the beginning, the cleaning cylinder 39 will also squeeze and wipe the PCBA board under the action of the connecting spring 43. If the coding effect is not good, the coding position will become blurred after the squeezing and wiping operation of the cleaning cylinder 39, thus completing a simple detection effect of the coding position.

[0038] like Figure 6 , Figure 7 , Figure 10The first clamping plate 4 is equipped with a self-locking assembly between the first clamping plate 4 and the worktable 1. The self-locking assembly includes multiple sets of positioning holes 6 opened on the upper side of the worktable 1. Two sets of control rods 21 are slidably sleeved in the first clamping plate 4. The same control plate 19 is fixedly connected to the upper side of the two sets of control rods 21. A second spring 20 is fixedly connected between the control plate 19 and the first clamping plate 4. Multiple sets of stop rods 28 are evenly fixedly connected to the outer side of the control rods 21. The side walls of the two sets of second clamping plates 5 are each opened with a moving groove 18. The two sides of the moving groove 18 are each opened with an inclined groove 24. The two sets of inclined grooves 24 are slidably connected to the same inclined rod 25. A moving rod 12 is fixedly sleeved on the outer side of the inclined rod 25. A third spring 26 is fixedly connected between the moving rod 12 and the moving groove 18. A second connecting rod 23 is fixedly connected to the side wall of the moving rod 12. A baffle 22 is fixedly connected to the side wall of the second connecting rod 23. The baffle 22 and the stop rod 28 are opposite to each other.

[0039] First, when no clamping operation is performed, the second spring 20 is in a stretched state, wherein... Figure 7 Based on the direction, the right baffle 22 is located below the uppermost stop 28 and abuts against the stop 28. The left baffle 22 is located below the lowermost stop 28, but the left baffle 22 does not abut against the stop 28. During the movement of the two second clamping plates 5 towards each other, the two second clamping plates 5 drive the moving rod 12 to move towards each other via the third spring 26. Before the two second clamping plates 5 abut against the PCBA board, the moving rod 12 abuts against the PCBA board. Under the obstruction of the PCBA board, the moving rod 12 moves towards the second clamping plate 5 relative to the second clamping plate 5. Under the action of the inclined groove 24 and the inclined rod 25, the moving rod 12 does not move vertically, but moves along the direction of the inclined groove 24. Figure 6 Based on the direction, the left-side moving rod 12 moves to the lower left, and the moving rod 12 drives the left-side baffle 22 to move to the lower left via the second connecting rod 23, switching to Figure 7 middle, Figure 6 The baffle 22 connected to the second connecting rod 23 represents Figure 7 The baffle 22 on the left side, considering only the horizontal movement, Figure 7In the middle, the left baffle 22 moves to the left and the right baffle 22 moves to the right, increasing the distance between both baffles 22 and the stop rod 28. When the moving rod 12 is fully inserted into the moving groove 18, the baffles 22 will not obstruct the stop rod 28. During this process, especially for the right baffle 22, which moves to the upper right, the baffle 22 will first drive the stop rod 28 to move upward. The stop rod 28 will drive the control rod 21 and the control plate 19 to move upward. The control plate 19 stretches the second spring 20 until the connection between the baffle 22 and the stop rod 28 is broken. At this time, under the action of the stretched second spring 20, the control plate 19 drives the control rod 21 to move downward. The control rod 21 enters the corresponding positioning hole 6, and the first clamping plate 4 is stuck on the worktable 1, forming a self-locking phenomenon. The first clamping plate 4 will not move, improving the stability of the first clamping plate 4.

[0040] like Figure 8 , Figure 9 A torsion spring 30 is fixedly connected between the rotating block 13 and the first clamping plate 4. A control component for controlling the rotation of the rotating block 13 is installed inside the first clamping plate 4. The control component includes multiple sets of inclined plates 29 that are uniformly fixedly connected to the outside of the rotating block 13. Multiple sets of fixed rods 27 are uniformly fixedly connected to the side wall of one of the control rods 21. The side wall of the multiple sets of fixed rods 27 has a sliding groove 33. A sliding rod 31 is slidably connected in the sliding groove 33. A fourth spring 32 is fixedly connected between the sliding rod 31 and the sliding groove 33. The sliding rod 31 and the inclined plate 29 are opposite each other. The outer sides of the inclined plate 29 and the sliding rod 31 are both smoothly set.

[0041] First, the inclined plate 29 and slide bar 31 are similar to a ratchet structure in real life. When the control lever 21 moves downward, it drives the fixed lever 27 downward. The fixed lever 27 drives the slide bar 31 downward through the fourth spring 32. When the slide bar 31 and the inclined plate 29 come into contact, since the outer sides of both the inclined plate 29 and the slide bar 31 are smooth, the friction between them is small and negligible. Therefore, the slide bar 31 will only move closer to the fixed lever 27, compressing the fourth spring, but it will not cause the inclined plate 29 to move. The inclined plate 29 remains stationary. Then, after the PCBA board is soldered and marked, when the PCBA board needs to be removed, the first threaded rod 7 is rotated a small turn. Since the first threaded ring 8 is fixedly connected to the connecting plate and the connecting plate is slidably connected to the rotating groove 2, rotating the first threaded rod 7 will cause the two first threaded rings 8 to move away from each other. The first threaded rings 8 drive the moving plate 3 to move away from each other, ultimately causing the moving plate 3 to move away from each other. Move the control plate 19 a short distance, then move it upwards. The control plate 19 drives the control lever 21 to move upwards, which in turn drives the fixed lever 27 and the sliding lever 31 to move upwards. When the sliding lever 31 abuts against the inclined plate 29, the inclined plate 29 causes the rotating block 13 to rotate around the rotating block 13. Since the rotating block 13 abuts against the PCBA board, it causes the PCBA board to rotate. When the sliding lever 31 and the inclined plate 29 are disconnected, under the action of the torsion spring 30, the rotating block 13 rotates in the opposite direction to the previous rotation, causing the rotating block 13 to return to its original position relative to the first clamping plate 4, until the next sliding lever 31 abuts against the inclined plate 29. Ultimately, during the process of the control lever 21 driving multiple fixed levers 27 and sliding lever 31 to move upwards, the PCBA board rotates back and forth, causing it to sway. If the welding effect is not good, the welded parts and the PCBA board will become loose. The back and forth swaying can simulate the actual use environment of the PCBA board in new energy vehicles, forming a better inspection operation between the PCBA board and the welded parts.

[0042] In this invention, the PCBA board to be processed is placed between two first clamping plates 4 and two second clamping plates 5. The first threaded rod 7 is rotated. Since the first threaded ring 8 is fixedly connected to the connecting plate, and the connecting plate is slidably connected to the rotating groove 2, the rotation of the first threaded rod 7 causes the two first threaded rings 8 to move closer to each other. The first threaded rings 8 drive the moving plate 3 to move closer to each other. The moving plate 3, through the first spring 11, drives the first clamping plate 4 to move closer to each other until the first clamping plate 4 and the PCBA board abut against each other, and the first spring 11 is compressed. This completes the initial clamping and fixing operation of the PCBA board. During the movement of the moving plate 3 towards the other side, the moving plate 3 drives the first clamping plate 4 to move through the first spring 11. When the first clamping plate 4 and the PCBA board abut against each other, the PCBA board forms an obstacle to the first clamping plate 4, causing the first clamping plate 4 to stop. However, at this time, under the action of the first threaded rod 7 and the first threaded ring 8, the moving plate 3 continues to move closer to the other side, causing the first spring 11 to be compressed. The second threaded rod 9, relative to the moving plate 3 (with... Figure 3 Based on the direction, it moves to the left, the second threaded rod 9 drives the second threaded ring 14 to rotate, the second threaded ring 14 drives the gear 15 to rotate, the gear 15 drives the two racks 16 to move, see attached. Figure 4 From the perspective of the rack, the left rack 16 moves downward and the right rack 16 moves upward. That is, the left rack 16 is fixedly connected to the upper second clamping plate 5 through the first connecting rod 10, and the right rack 16 is fixedly connected to the lower second clamping plate 5 through the first connecting rod 10. Therefore, the two second clamping plates 5 can be brought closer to each other until the two second clamping plates 5 and the PCBA board are in contact, thereby completing the clamping and fixing operation of the PCBA board in two different directions.

[0043] As the two second clamping plates 5 move closer to each other, the two second clamping plates 5, via the third spring 26, drive the moving rod 12 to move closer to each other. Before the two second clamping plates 5 come into contact with the PCBA board, the moving rod 12 first comes into contact with the PCBA board. Under the obstruction of the PCBA board, the moving rod 12 moves relative to the second clamping plates 5 towards them. Furthermore, under the action of the inclined groove 24 and the inclined rod 25, the moving rod 12 does not move vertically, but rather along the direction of the inclined groove 24. Figure 6 Based on the direction, the left-side moving rod 12 moves to the lower left, and the moving rod 12 drives the left-side baffle 22 to move to the lower left via the second connecting rod 23, switching to Figure 7 middle, Figure 6 The baffle 22 in the middle represents Figure 7 The baffle 22 on the left side, considering only the horizontal movement, Figure 7In the middle, the left baffle 22 moves to the left and the right baffle 22 moves to the right, and the distance between both baffles 22 and the stop rod 28 increases. When the moving rod 12 is fully inserted into the moving groove 18, the baffles 22 will not obstruct the stop rod 28. In this process, especially for the right baffle 22, the baffle 22 moves to the upper right. The baffle 22 will first drive the stop rod 28 to move upward. The stop rod 28 drives the control rod 21 and the control plate 19 to move upward. The control plate 19 stretches the second spring 20 until the connection between the baffle 22 and the stop rod 28 is broken. At this time, under the action of the stretched second spring 20, the control plate 19 drives the control rod 21 to move downward. The control rod 21 enters the corresponding positioning hole 6. The first clamping plate 4 is stuck on the worktable 1, forming a self-locking phenomenon for the first clamping plate 4. The first clamping plate 4 will not move, improving the stability of the first clamping plate 4.

[0044] When the control lever 21 moves downward, it drives the fixed lever 27 downward. The fixed lever 27, through the fourth spring 32, drives the sliding lever 31 downward. When the sliding lever 31 abuts against the inclined plate 29, since both the outer sides of the inclined plate 29 and the sliding lever 31 are smooth, the friction between them is small and negligible. Therefore, the sliding lever 31 only moves closer to the fixed lever 27, compressing the fourth spring, but does not cause the inclined plate 29 to move. The inclined plate 29 remains stationary. Then, after the PCBA board soldering and marking work is completed, when the PCBA board needs to be removed, the first threaded rod 7 is rotated a small turn. Since the first threaded ring 8 is fixedly connected to the connecting plate, and the connecting plate is slidably connected to the rotating groove 2, rotating the first threaded rod 7 will cause the two first threaded rings 8 to move away from each other. The first threaded rings 8 drive the moving plate 3 to move away from each other, eventually moving the moving plate 3 a small distance away from each other, and then moving upward. The control board 19 moves the control rod 21 upward, which in turn moves the fixed rod 27 and the sliding rod 31 upward. When the sliding rod 31 abuts against the inclined plate 29, the inclined plate 29 causes the rotating block 13 to rotate around the rotating block 13. Since the rotating block 13 abuts against the PCBA board, it causes the PCBA board to rotate. When the sliding rod 31 and the inclined plate 29 are disconnected, the rotating block 13 rotates in the opposite direction to the previous rotation under the action of the torsion spring 30, so that the rotating block 13 returns to its original position relative to the first clamping plate 4 until the next sliding rod 31 abuts against the inclined plate 29. In the end, the PCBA board rotates back and forth and shakes during the process of the control rod 21 moving multiple fixed rods 27 and sliding rods 31 upward. If the welding effect is not good, the welded parts and the PCBA board will become loose. The back and forth shaking can simulate the actual use environment of the PCBA board in new energy vehicles, forming a better inspection operation between the PCBA board and the welded parts.

[0045] As the second clamping plate 5 moves closer to the other side, it drives the fixed plate 34 to move. The fixed plate 34 then drives the cleaning rods 37 and the cleaning cylinder 39 to move downwards. Since the connecting rack 42 remains stationary, the connecting gear 41, which moves with the transmission rod 35 and the fixed plate 34, rotates. The connecting gear 41 drives the transmission rod 35 to rotate. Under the action of the cleaning gear 38 and the connecting gear 41, all the cleaning rods 37 rotate, driving the cleaning cylinder 39 to rotate. Before the two second clamping plates 5 and the PCBA board come into contact, the cleaning cylinder 39 has already come into contact with the PCBA board. At this point, the cleaning cylinder 39 stops moving due to the obstruction of the PCBA board. However, the second clamping plate 5 continues to move closer to the PCBA board. During this process, it will create a force on the connecting spring 4. The tension of spring 3 and the elastic force formed by connecting spring 43 will act on the PCBA board through cleaning cylinder 39, forming a squeezing and wiping effect on the PCBA board to keep it clean. When it is necessary to perform coding operation on the PCBA board, move cleaning cylinder 39 to move closer to the second clamping plate 5 to expose the position of the PCBA board to be coded and start coding operation. After the coding operation is completed, move cleaning cylinder 39 back to its original position. When disassembling the PCBA board, at the beginning, under the action of connecting spring 43, cleaning cylinder 39 will also form a squeezing and wiping effect on the PCBA board. If the coding effect is not good, the coding position will be blurred after the squeezing and wiping operation of cleaning cylinder 39, thus completing a simple detection effect of the coding position.

Claims

1. A positioning fixture for welding and marking PCBA boards on new energy vehicles, comprising a worktable (1), characterized in that, A clamping assembly for PCBA boards is installed on the upper side of the workbench (1). The clamping assembly includes a rotating groove (2) opened on the upper side of the workbench (1). A first threaded rod (7) is rotatably connected in the rotating groove (2). Two sets of first threaded rings (8) are threaded on the outer side of the first threaded rod (7). A connecting plate is fixedly connected to the upper side of the two sets of first threaded rings (8). The connecting plate passes through the rotating groove (2) and slides through the rotating groove (2). A moving plate (3) is fixedly connected to the upper side of the connecting plate. Two sets of first clamping plates (4) are slidably connected to the upper side of the workbench (1). A first spring (11) is fixedly connected between the two sets of first clamping plates (4) and the moving plate (3). Two sets of second clamping plates (5) are slidably connected to the side of the first clamping plate (4) away from the moving plate (3). A rotating block (13) is rotatably connected to the side wall of the first clamping plate (4). The rotating block (13) is located between the two sets of second clamping plates (5).

2. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 1, characterized in that, The movable plate (3) is rotatably connected to a second threaded ring (14), and a second threaded rod (9) is threadedly sleeved inside the second threaded ring (14). The second threaded rod (9) passes through the movable plate (3). The second threaded rod (9) and the first clamping plate (4) are fixedly connected. Two sets of sliding plates (17) are slidably connected inside the movable plate (3). A rack (16) is fixedly connected to the side wall of the two sets of sliding plates (17). A gear (15) is fixedly sleeved on the outside of the second threaded ring (14). The gear (15) and the rack (16) mesh with each other. A first connecting rod (10) is fixedly connected to the side wall of the two sets of sliding plates (17). The first connecting rod (10) and the second clamping plate (5) are fixedly connected.

3. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 2, characterized in that, A self-locking assembly is installed inside the first clamping plate (4). The self-locking assembly includes multiple sets of positioning holes (6) opened on the upper side of the workbench (1). Two sets of control rods (21) are slidably sleeved inside the first clamping plate (4). The upper side of the two sets of control rods (21) is fixedly connected to the same control plate (19). A second spring (20) is fixedly connected between the control plate (19) and the first clamping plate (4). Multiple sets of stop rods (28) are evenly fixedly connected to the outer side of the control rods (21). The side walls of the two sets of second clamping plates (5) are opened with sliding holes. The moving groove (18) has inclined grooves (24) on both sides. The two sets of inclined grooves (24) are slidably connected to the same inclined rod (25). A moving rod (12) is fixedly sleeved on the outside of the inclined rod (25). A third spring (26) is fixedly connected between the moving rod (12) and the moving groove (18). A second connecting rod (23) is fixedly connected to the side wall of the moving rod (12). A baffle (22) is fixedly connected to the side wall of the second connecting rod (23). The baffle (22) and the stop rod (28) are in opposite positions.

4. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 3, characterized in that, A torsion spring (30) is fixedly connected between the rotating block (13) and the first clamping plate (4). A control component for controlling the rotation of the rotating block (13) is installed in the first clamping plate (4). The control component includes multiple sets of inclined plates (29) that are uniformly fixedly connected to the outside of the rotating block (13). Multiple sets of fixed rods (27) are uniformly fixedly connected to the side wall of one of the control rods (21). The side walls of the multiple sets of fixed rods (27) are provided with sliding grooves (33). A sliding rod (31) is slidably connected in the sliding groove (33). A fourth spring (32) is fixedly connected between the sliding rod (31) and the sliding groove (33). The sliding rod (31) and the inclined plate (29) are opposite to each other.

5. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 4, characterized in that, A fixing plate (34) is slidably connected to the outer side of each of the two second clamping plates (5). A connecting spring (43) is fixedly connected between the fixing plate (34) and the second clamping plate (5). Multiple sets of transmission rods (35) are rotatably connected to the side wall of the fixing plate (34). Transmission gears (36) are fixedly sleeved on the outer side of the multiple sets of transmission rods (35). Multiple sets of cleaning rods (37) are also rotatably connected to the side wall of the fixing plate (34). Cleaning cylinders (39) are slidably sleeved on the outer side of the multiple sets of cleaning rods (37). The cleaning rods (37) are also fixedly sleeved with cleaning gears (38) on the outside. The cleaning gears (38) and the transmission gears (36) mesh with each other. The side wall of the first clamping plate (4) has two sets of connecting grooves (40). One end of the transmission rod (35) extends to the connecting groove (40) and is fixedly connected with a connecting gear (41). The inner side walls of the two sets of connecting grooves (40) are fixedly connected with connecting racks (42). The connecting gears (41) and the connecting racks (42) mesh with each other.

6. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 5, characterized in that, The outer sides of the inclined plate (29) and the slide bar (31) are both smooth.

7. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 6, characterized in that, Anti-slip rubber pads are fixedly fitted on the outer sides of the first clamping plate (4) and the second clamping plate (5).

8. The positioning fixture for welding and marking PCBA boards in new energy vehicles according to claim 7, characterized in that, A handle is fixedly connected to the outer side of the first threaded rod (7).

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