Magnetic type PCB element positioning jig

Abstract

The invention discloses a magnetic type PCB element positioning jig, and relates to the technical field of PCB element positioning, the magnetic type PCB element positioning jig comprises a bottom plate, a first electromagnet is installed on the upper surface of the bottom plate, a plurality of second electromagnets are arranged on the upper surface of the first electromagnet, a clamping piece is installed on one side, away from the first electromagnet, of each second electromagnet, and a supporting piece is installed on the upper surface of the bottom plate; the supporting piece is installed between the multiple clamping pieces. The multiple second electromagnets are arranged on the upper surface of the first electromagnet, the clamping structures are installed on the upper surfaces of the second electromagnets, the multiple clamping structures are used for limiting the PCB, and when the first electromagnet attracts the second electromagnets, the second electromagnets move towards the center of the first electromagnet; and the circle centers of the multiple second electromagnets are located on the same vertical line, at the moment, clamping and positioning of the PCB are completed, the current direction of the first electromagnets is changed, the first electromagnets and the second electromagnets repel each other, at the moment, the clamping structure loses clamping of the PCB, and the PCB can be taken down conveniently.

Description

Technical Field

[0001] This invention relates to the technical field of PCB component positioning, specifically to a magnetic PCB component positioning fixture. Background Technology

[0002] In the electronics industry, components need to be soldered onto the completed PCB board to form a complete circuit board. Therefore, the PCB board needs to be positioned during the soldering process to avoid deviations in the soldering positions of the components. Thus, the PCB board needs to be clamped and positioned.

[0003] In the existing technology, PCB board positioning mainly uses multiple electric push rods to push clamping devices to confine the PCB board between multiple clamping devices. However, this method not only increases the clamping cost, but also makes the electric push rods prone to damage during long-term use, resulting in reduced accuracy and affecting the positioning of the PCB board. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetic PCB component positioning fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a magnetic PCB component positioning fixture, comprising a base plate, a first electromagnet mounted on the upper surface of the base plate, a plurality of second electromagnets disposed on the upper surface of the first electromagnet, the plurality of second electromagnets being disposed at different horizontal heights, a clamping member mounted on the side of the second electromagnets away from the first electromagnet, the plurality of clamping members being at the same horizontal height, and a support member mounted on the upper surface of the base plate, the support member being disposed between the plurality of clamping members.

[0006] Furthermore, the clamping member includes a support rod, which is installed on the side of the second electromagnet away from the first electromagnet. A support plate is installed on the end of the support rod away from the second electromagnet. The support member is installed between multiple support plates. An adjustment groove is formed on the upper surface of the support plate. An adjustment block is slidably connected in the adjustment groove. A clamping plate is installed on the upper surface of the adjustment block. The multiple clamping plates and the support plates are at the same horizontal height. An adjustment member is installed on the side of the clamping plate away from the first electromagnet. The adjustment member is installed on the upper surface of the support plate.

[0007] Furthermore, the support member includes multiple vertical rods, which are mounted on the upper surface of the base plate. An annular plate is installed at the end of the multiple vertical rods away from the base plate. Multiple rectangular rods are installed inside the annular plate. A rectangular hole is opened on the side of the support plate facing the annular plate. The ends of the rectangular rods away from the annular plate pass through the rectangular hole and are connected to each other.

[0008] Furthermore, the adjusting component includes a bearing, which is installed on the side of the clamping plate away from the first electromagnet. A screw is installed inside the bearing, and a threaded cylinder is installed on the upper surface of the support plate. The end of the screw away from the bearing is threadedly connected to the threaded cylinder.

[0009] Furthermore, the upper surface of the rectangular rod is provided with multiple rotating grooves, and a rotating roller is rotatably connected in the rotating grooves. The horizontal height of the rotating roller is the same as the horizontal height of the support plate.

[0010] Furthermore, multiple limiting grooves are provided on both the upper and lower sides of the rectangular hole, and limiting rollers are rotatably connected in the limiting grooves. The rectangular rod is slidably connected between the multiple limiting rollers.

[0011] Furthermore, an annular cylinder is installed on the upper surface of the annular plate, the annular surface of the annular cylinder has ventilation holes, and multiple connecting pipes are installed on the annular surface of the annular cylinder. A sealing rod is inserted into the end of the connecting pipe away from the annular cylinder, and the end of the sealing rod away from the connecting pipe is connected to the clamping plate.

[0012] Furthermore, a limiting plate is installed on the side of the plurality of clamping plates facing the first electromagnet.

[0013] Furthermore, protective pads are attached to the side of the clamping plates facing the first electromagnet and the side of the limiting plate facing the support plate.

[0014] Furthermore, a control switch for controlling the current flow direction of the first electromagnet is installed on the upper surface of the base plate.

[0015] This invention provides a magnetic PCB component positioning fixture, which has the following advantages:

[0016] 1. This invention involves setting multiple second electromagnets on the upper surface of a first electromagnet, and installing a clamping structure consisting of a support rod, a support plate, an adjusting block, and a clamping plate on the upper surface of the second electromagnets. The multiple clamping structures restrict the PCB board. When the first electromagnet attracts the second electromagnets, the second electromagnets move towards the center of the first electromagnet, aligning the centers of the multiple second electromagnets on the same vertical line. This completes the clamping and positioning of the PCB board. When it is necessary to remove the PCB board from between the multiple clamping structures, simply change the direction of the current in the first electromagnet, causing the first and second electromagnets to repel each other. This causes the clamping structure to lose its grip on the PCB board, facilitating its removal. Furthermore, when the first electromagnet repels the second electromagnet, because the second electromagnet is constrained on the rectangular rod by the clamping structure, the repulsive force of the first electromagnet on the second electromagnet will only cause the second electromagnet to move away from the first electromagnet, and will not cause the second electromagnet to reverse and re-attract the first electromagnet.

[0017] 2. The present invention uses an adjustment structure consisting of a bearing, a screw and a threaded cylinder installed on the upper surface of the support plate to adjust the position of the supporting plate on the support plate, thereby enabling the supporting structure to be used for clamping PCB boards of different sizes and increasing the applicability of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a magnetic PCB component positioning fixture according to the present invention;

[0019] Figure 2 This is an assembly diagram of the rectangular rod and support plate of a magnetic PCB component positioning fixture according to the present invention.

[0020] Figure 3 This invention relates to a magnetic PCB component positioning fixture. Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is an assembly diagram of the support rod, support plate, and clamping plate of a magnetic PCB component positioning fixture according to the present invention.

[0022] Figure 5 This is a schematic diagram of the assembly of a rectangular rod and a limiting roller in a rectangular hole of a magnetic PCB component positioning fixture according to the present invention.

[0023] Figure 6 This is a schematic diagram of the assembly of the sealing rod and connecting pipe with the annular cylinder of a magnetic PCB component positioning fixture according to the present invention.

[0024] In the diagram: 1. Base plate; 2. Control switch; 3. Vertical rod; 4. First electromagnet; 5. Annular plate; 6. Second electromagnet; 7. Annular cylinder; 8. Support rod; 9. Support plate; 10. Rectangular rod; 11. Limiting plate; 12. Rotating roller; 13. Protective pad; 14. Clamping plate; 15. Threaded cylinder; 16. Screw; 17. Adjusting block; 18. Adjusting groove; 19. Bearing; 20. Rectangular hole; 21. Limiting roller; 22. Vent hole; 23. Sealing rod; 24. Connecting pipe. Detailed Implementation

[0025] Please see Figures 1 to 6This invention provides a technical solution: a magnetic PCB component positioning fixture, including a base plate 1. A first electromagnet 4 is mounted on the upper surface of the base plate 1, and a control switch 2 for controlling the current flow direction of the first electromagnet 4 is also mounted on the upper surface of the base plate 1. Multiple second electromagnets 6 are arranged on the upper surface of the first electromagnet 4 at different horizontal heights. By changing the current flow direction of the first electromagnet 4 through the control switch 2, when the magnetism of the second electromagnets 6 is opposite to that of the first electromagnet 4, the multiple second electromagnets 6 are attracted to the first electromagnet 4 and move towards it. When the magnetism of the second electromagnets 6 is the same as that of the first electromagnet 4, the multiple second electromagnets 6 are repelled by the first electromagnet 4 and move away from the first electromagnet 4. Furthermore, due to the characteristic that the magnetic field lines of the magnets are connected and form a closed loop when they attract each other, and the characteristic that the opposite poles of the two magnets are brought close together, the multiple second electromagnets 6 move away from the center of the first electromagnet 4, and finally the centers of the first electromagnet 4 and the second electromagnets 6 are on the same vertical line.

[0026] A support rod 8 is installed on the side of the second electromagnet 6 away from the first electromagnet 4. A support plate 9 is installed on the end of the support rod 8 away from the second electromagnet 6. Multiple vertical rods 3 are installed on the upper surface of the base plate 1. An annular plate 5 is installed on the end of the multiple vertical rods 3 away from the base plate 1. Multiple rectangular rods 10 are installed inside the annular plate 5. A rectangular hole 20 is opened on the side of the support plate 9 facing the annular plate 5. The ends of the rectangular rods 10 away from the annular plate 5 pass through the rectangular hole 20 and are connected to each other. An adjustment groove 18 is opened on the upper surface of the support plate 9. An adjustment block 17 is slidably connected in the adjustment groove 18. A clamping plate 14 is installed on the upper surface of the adjustment block 17. The multiple clamping plates 14 and the support plate 9 are at the same horizontal height. The annular plate 5 supports the rectangular rods 10, thereby supporting the support plate 9.

[0027] By setting multiple second electromagnets 6 on the upper surface of the first electromagnet 4, and installing a clamping structure consisting of a support rod 8, a support plate 9, an adjusting block 17, and a clamping plate 14 on the upper surface of the second electromagnets 6, the PCB board is restricted by multiple clamping structures. When the first electromagnet 4 attracts the second electromagnets 6, the second electromagnets 6 move toward the center of the first electromagnet 4, and the centers of the multiple second electromagnets 6 are on the same vertical line. When the clamping structures installed on all the second electromagnets 6 are in contact with the edge of the PCB board, the clamping and positioning of the PCB board is completed.

[0028] When it is necessary to remove the PCB board from among multiple clamping structures, simply change the current direction of the first electromagnet 4 so that the first electromagnet 4 and the second electromagnet 6 repel each other. At this time, the second electromagnet 6 will drive the clamping structure to move away from the first electromagnet 4, so that the clamping structure loses its grip on the PCB board, making it easier to remove the PCB board. Furthermore, when the first electromagnet 4 repels the second electromagnet 6, since the second electromagnet 6 is restricted to the rectangular rod 10 by the clamping structure, the repulsive force of the first electromagnet 4 on the second electromagnet 6 will only cause the second electromagnet 6 to move away from the first electromagnet 4, and will not cause the second electromagnet 6 to reverse and re-attract the first electromagnet 4.

[0029] A bearing 19 is installed on the side of the clamping plate 14 away from the first electromagnet 4. A screw 16 is installed inside the bearing 19. A threaded cylinder 15 is installed on the upper surface of the support plate 9. The end of the screw 16 away from the bearing 19 is threaded into the threaded cylinder 15. By adjusting the position of the screw 16 in the threaded cylinder 15, the position of the clamping plate 14 can be changed through the bearing 19. By installing an adjustment structure consisting of the bearing 19, the screw 16 and the threaded cylinder 15 on the upper surface of the support plate 9, the position of the abutment plate on the support plate 9 can be adjusted using the adjustment structure, thereby enabling the abutment structure to meet the clamping use of PCB boards of different sizes and increasing the applicability of the device.

[0030] Multiple limiting grooves are provided on both the upper and lower sides of the rectangular hole 20. A limiting roller 21 is rotatably connected in the limiting groove. The rectangular rod 10 is slidably connected between the multiple limiting rollers 21. The limiting rollers 21 limit the position of the rectangular rod 10 to prevent the rectangular rod 10 from shaking after the PCB board is placed on it, which would affect the PCB board soldering.

[0031] Multiple rotating grooves are provided on the upper surface of the rectangular rod 10. Rotating rollers 12 are rotatably connected in the rotating grooves. The horizontal height of the rotating rollers 12 is the same as that of the support plate 9. The rotating rollers 12 support the PCB board, thereby reducing the resistance of the PCB board moving on the multiple rectangular rods 10. At the same time, the rolling of the rotating rollers 12 replaces the sliding friction, thereby reducing the probability of wear during the movement of the PCB board.

[0032] An annular cylinder 7 is installed on the upper surface of the annular plate 5. Ventilation holes 22 are opened on the annular surface of the annular cylinder 7. Multiple connecting pipes 24 are installed on the annular surface of the annular cylinder 7. A sealing rod 23 is inserted into the end of the connecting pipe 24 away from the annular cylinder 7. The end of the sealing rod 23 away from the connecting pipe 24 is connected to the clamping plate 14. By using the cooperation of the sealing rod 23 and the connecting pipe 24, the moving speed of the second electromagnet 6 is reduced, thereby reducing the moving speed of the clamping structure and avoiding damage to the PCB board caused by the second electromagnet 6 clamping too fast.

[0033] A limiting plate 11 is installed on the side of the clamping plate 14 facing the first electromagnet 4. The limiting plate 11 restricts the position of the PCB board and prevents the PCB board from tilting or tilting during movement, which would cause the PCB board to deviate in positioning. Protective pads 13 are attached to both the side of the clamping plate 14 facing the first electromagnet 4 and the side of the limiting plate 11 facing the support plate 9. The protective pads 13 reduce the damage to the PCB board during clamping.

[0034] In summary, when using this magnetic PCB component positioning fixture, the PCB board is first placed on the rectangular rod 10 and supported by the rotating roller 12. Then, the direction of the current through the first electromagnet 4 is adjusted by the control switch 2 so that the first electromagnet 4 has the opposite magnetism to the second electromagnet 6, thereby attracting multiple second electromagnets 6. At this time, the second electromagnets 6 will be attracted by the first electromagnet 4 and move towards the first electromagnet 4.

[0035] Since the rectangular rod 10 is inserted into the rectangular slot and is restricted by multiple limiting rollers 21 installed in multiple rectangular holes 20, the movement of the second electromagnet 6 will drive the clamping structure composed of the support rod 8, support plate 9, adjusting block 17 and clamping plate 14 to move. When the clamping structure contacts the PCB board, it will drive the PCB board to adjust its position on the rectangular rod 10, so that the PCB board moves on the rotating roller 12. When the center of the multiple second electromagnets 6 and the center of the first electromagnet 4 move to the first vertical line, all the clamping structures are in contact with the edge of the PCB board, and the clamping and positioning of the PCB board is completed.

[0036] Furthermore, if the second electromagnet 6 moves too fast toward the first electromagnet 4, the sealing rod 23 seals the connecting cylinder. The rapid movement of the second electromagnet 6 drives the sealing rod 23 to move, reducing the air pressure inside the connecting cylinder and thus restricting the movement of the sealing rod 23. This achieves the purpose of limiting the movement speed of the clamping structure. Meanwhile, the vent holes on the connecting cylinder will slowly balance the air pressure inside the connecting cylinder, ultimately allowing the second electromagnet 6 to move toward the center of the first electromagnet 4.

[0037] After the welding is completed, the current flow direction inside the first electromagnet 4 is changed again by the control switch 2, so that the first electromagnet 4 and the second electromagnet 6 have the same magnetism. This causes the first electromagnet 4 to repel multiple second electromagnets 6. Since the second electromagnets 6 are connected to the clamping structure, the second electromagnets 6 cannot be flipped, but can only move to the side away from the first electromagnet 4, thereby causing multiple clamping structures to separate from the PCB board. At this time, the PCB board can be removed from the rectangular rod 10.

[0038] When clamping PCBs of different sizes, first align the center of the multiple second electromagnets 6 with the center of the first electromagnet 4 on the same vertical line. Then place the PCB between the multiple clamping structures. Next, adjust the position of the screw 16 inside the threaded cylinder 15. Use the screw 16 to adjust the position of the clamping plate 14 until all the clamping plates 14 are in contact with the edge of the PCB. At this point, the positioning of the PCB of that size can be completed.

[0039] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A magnetic PCB component positioning fixture, comprising a base plate (1), characterized in that, A first electromagnet (4) is mounted on the upper surface of the base plate (1). A plurality of second electromagnets (6) are provided on the upper surface of the first electromagnet (4). The plurality of second electromagnets (6) have different horizontal heights. A clamping member is mounted on the side of the second electromagnet (6) away from the first electromagnet (4). The plurality of clamping members have the same horizontal height. A support member is mounted on the upper surface of the base plate (1). The support member is installed between the plurality of clamping members.

2. The magnetic PCB component positioning fixture according to claim 1, characterized in that, The clamping member includes a support rod (8), which is installed on the upper surface of the second electromagnet (6) away from the first electromagnet (4). A support plate (9) is installed at the end of the support rod (8) away from the second electromagnet (6). The support member is installed between multiple support plates (9). An adjustment groove (18) is opened on the upper surface of the support plate (9). An adjustment block (17) is slidably connected in the adjustment groove (18). A clamping plate (14) is installed on the upper surface of the adjustment block (17). The multiple clamping plates (14) and the support plates (9) are at the same horizontal height. An adjustment member is installed on the side of the clamping plate (14) away from the first electromagnet (4). The adjustment member is installed on the upper surface of the support plate (9).

3. The magnetic PCB component positioning fixture according to claim 2, characterized in that, The support includes multiple vertical rods (3), which are installed on the upper surface of the base plate (1). An annular plate (5) is installed at one end of the multiple vertical rods (3) away from the base plate (1). Multiple rectangular rods (10) are installed inside the annular plate (5). A rectangular hole (20) is opened on the side of the support plate (9) facing the annular plate (5). The rectangular rods (10) at the end away from the annular plate (5) pass through the rectangular hole (20) and are connected to each other.

4. A magnetic PCB component positioning fixture according to claim 2, characterized in that, The adjusting component includes a bearing (19), which is installed on the side of the clamping plate (14) away from the first electromagnet (4). A screw (16) is installed inside the bearing (19). A threaded cylinder (15) is installed on the upper surface of the support plate (9). The end of the screw (16) away from the bearing (19) is threadedly connected to the threaded cylinder (15).

5. A magnetic PCB component positioning fixture according to claim 3, characterized in that, The upper surface of the rectangular rod (10) is provided with multiple rotating grooves, and a rotating roller (12) is rotatably connected in the rotating groove. The horizontal height of the rotating roller (12) is the same as the horizontal height of the support plate (9).

6. A magnetic PCB component positioning fixture according to claim 3, characterized in that, Multiple limiting grooves are provided on both the upper and lower sides of the rectangular hole (20). A limiting roller (21) is rotatably connected in the limiting groove. The rectangular rod (10) is slidably connected between the multiple limiting rollers (21).

7. A magnetic PCB component positioning fixture according to claim 3, characterized in that, An annular cylinder (7) is installed on the upper surface of the annular plate (5). A vent hole (22) is opened on the annular surface of the annular cylinder (7). Multiple connecting pipes (24) are installed on the annular surface of the annular cylinder (7). A sealing rod (23) is inserted into the end of the connecting pipe (24) away from the annular cylinder (7). The end of the sealing rod (23) away from the connecting pipe (24) is connected to the clamping plate (14).

8. A magnetic PCB component positioning fixture according to claim 2, characterized in that, A limiting plate (11) is installed on the side of the plurality of clamping plates (14) facing the first electromagnet (4).

9. A magnetic PCB component positioning fixture according to claim 8, characterized in that, Protective pads (13) are attached to the side of the clamping plates (14) facing the first electromagnet (4) and the side of the limiting plate (11) facing the support plate (9).

10. A magnetic PCB component positioning fixture according to claim 1, characterized in that, A control switch (2) for controlling the current flow direction of the first electromagnet (4) is installed on the upper surface of the base plate (1).

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