Special-shaped hole processing device for PCB (Printed Circuit Board)

Abstract

The utility model discloses a printed circuit board (PCB) special-shaped hole machining device which comprises a machining table, a supporting assembly is arranged between a supporting frame and the machining table, a deburring assembly is arranged above the supporting frame, and a two-way threaded rod is driven to rotate forwards by controlling a low-speed motor. The two-way threaded rod can drive the front and rear groups of deburring brushes to move inwards together through the front and rear supporting hanging plates and the driving motor and make contact with the edges of the front and rear sides of the special-shaped hole, so that the two groups of deburring brushes rotating in the later period can remove burrs at the edges of the front and rear sides of the special-shaped hole at the same time; when the multi-stage electric push rod is controlled to drive the supporting seat to transversely move left and right through the extension plate, the supporting seat can drive the circuit board body to transversely move and adjust together through the lifting electric push rod and the supporting frame, and when the lifting electric push rod is controlled to stretch out and draw back, the supporting frame can drive the circuit board body to lift together. Therefore, a worker can adjust the special-shaped hole formed in the circuit board body to be between the two groups of deburring brushes.

Description

Technical Field

[0001] This utility model relates to the field of PCB circuit board hole deburring technology, specifically a PCB circuit board irregular hole processing device. Background Technology

[0002] PCB circuit boards, also known as printed circuit boards, are important electronic components. They serve as the support for electronic components and the carrier for electrical interconnection between them. To enable PCB circuit boards to be used in applications requiring special electromagnetic shielding, heat dissipation, or mechanical fixation, CNC drilling machines are needed to mill irregular holes at designated locations. Since irregular holes differ in shape from traditional standard circular holes, burrs will be generated at the edges of the holes after milling. This processing equipment is then used to deburr the edges of the irregular holes.

[0003] Although existing deburring devices can remove burrs from the edges of irregular holes on circuit boards, they cannot remove burrs from both sides of the irregular holes simultaneously. Since the irregular holes are machined by milling, burrs will be generated on both sides of the irregular holes and need to be removed. In this case, the operator needs to remove the burrs on one side of the irregular hole and then flip the circuit board to fix it before the deburring device can remove the burrs on the other side of the irregular hole. Therefore, the efficiency and convenience of deburring need to be further improved. Utility Model Content

[0004] The purpose of this invention is to provide a PCB circuit board irregular hole processing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A PCB circuit board irregular hole processing device includes a processing table, a chip guide cavity, a collection box, and a support frame. The upper surface of the processing table has a chip guide cavity, and the collection box is inserted directly below the chip guide cavity. A support frame is installed above the processing table, and a circuit board body is inserted into the inner side of the support frame. Irregular holes are formed inside the circuit board body. A support assembly is provided between the support frame and the processing table, and the support assembly is used to adjust the support frame vertically and laterally. A deburring assembly is provided above the support frame, and the deburring assembly is used to remove burrs from the front and rear edges of the irregular holes.

[0007] Preferably, the deburring assembly includes a drive motor, a support plate, a low-speed motor, a limiting cavity, a bidirectional threaded rod, a support plate, and a deburring brush. The support plate is fixedly connected to the rear side of the upper surface of the processing table. A limiting cavity is formed on the upper surface of the support plate. A bidirectional threaded rod is installed inside the limiting cavity. A low-speed motor is installed at the front end of the bidirectional threaded rod. The front and rear sides of the annular side of the bidirectional threaded rod are threaded with support plates. A drive motor is installed on the lower side of the front end of the support plate. A deburring brush is installed at the transmission end of the drive motor.

[0008] Preferably, the support assembly includes a right support plate, a support beam, a lifting electric actuator, a support base, an extension plate, a multi-stage electric actuator, and a left support plate. The left support plate is fixedly connected to the left side of the upper surface of the machining table. The multi-stage electric actuator is installed inside the rear side of the left support plate. The right support plate is fixedly connected to the right side of the upper surface of the machining table. A support beam is fixedly connected between the right support plate and the left support plate. A support base is provided on the outer surface of the support beam. An extension plate is connected to the left side of the rear end face of the support base. A lifting electric actuator is installed between the support base and the support frame.

[0009] Preferably, a limiting rod is fixedly connected to the right side of the upper end face of the support base, and a guide sleeve is connected to the right side of the lower end face of the support frame, and the guide sleeve matches the limiting rod.

[0010] Preferably, the support base has a rectangular cavity inside, and the rectangular cavity matches the support beam. The telescopic range of the lifting electric push rod is greater than the vertical width of the circuit board, and the telescopic range of the multi-stage electric push rod is greater than the horizontal length of the circuit board.

[0011] Preferably, the support frame has symmetrically provided limiting grooves on the left and right sides of its inner wall, and the limiting grooves match the circuit board body. The support frame has chip guide ramps on the front and rear sides of its bottom.

[0012] Preferably, the left end face of the support frame has an internally threaded through hole, and a positioning screw is installed inside the internally threaded through hole, and the positioning screw is a wing screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By controlling the low-speed motor to drive the bidirectional threaded rod to rotate forward, the bidirectional threaded rod can drive the front and rear sets of deburring brushes to move inward together through the front and rear support plates and drive motors and contact the front and rear edges of the irregular hole. Then, the front and rear drive motors can be started to drive the front and rear sets of deburring brushes to rotate and remove the burrs on the front and rear edges of the irregular hole at the same time. The deburring efficiency and convenience are good.

[0015] 2. When the multi-stage electric actuator is controlled to move the support base laterally left and right through the extension plate, the support base can move and adjust the circuit board body laterally together through the lifting electric actuator and the support frame. When the lifting electric actuator is controlled to extend or retract, the support frame can move the circuit board body up and down together, so that the staff can adjust the irregular holes opened on the circuit board body between the two sets of deburring brushes for subsequent deburring processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a structural diagram of the deburring component and the support component in this utility model;

[0018] Figure 3 This is a partial structural diagram of the deburring component in this utility model;

[0019] Figure 4 This is a structural diagram of the support frame in this utility model;

[0020] Figure 5 This is a structural diagram of the support base in this utility model.

[0021] In the diagram: 1. Machining table; 2. Circuit board body; 3. Irregular hole; 4. Deburring assembly; 41. Drive motor; 42. Support plate; 43. Low-speed motor; 44. Limiting cavity; 45. Bidirectional threaded rod; 46. Support plate; 47. Deburring brush; 5. Support assembly; 51. Right support plate; 52. Support beam; 53. Lifting electric push rod; 54. Support base; 541. Rectangular cavity; 55. Extension plate; 56. Multi-stage electric push rod; 57. Left support plate; 58. Guide sleeve rod; 59. Limiting rod; 6. Chip guide cavity; 7. Collection box; 8. Support frame; 81. Positioning screw; 82. Internal threaded through hole; 83. Chip guide ramp; 84. Limiting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution:

[0024] Example 1:

[0025] A PCB circuit board irregular hole processing device includes a processing table 1, a chip guiding cavity 6, a collection box 7, and a support frame 8. The chip guiding cavity 6 is provided on the upper surface of the processing table 1. The chip guiding cavity 6 can guide most of the debris falling off the circuit board 2 during deburring to the collection box 7. The collection box 7 is inserted directly below the chip guiding cavity 6. The collection box 7 can collect the debris falling off the chip guiding cavity 6 for subsequent transfer and cleaning by workers. The support frame 8 is installed above the processing table 1. The support frame 8 can support and limit the circuit board 2. The circuit board 2 is inserted into the inner side of the support frame 8. The circuit board 2 has irregular holes 3. When the circuit board 2 on the support frame 8 is in the lowest position, the vertical distance between the circuit board 2 and the support plate 46 is greater than the vertical height of the circuit board 2, so as to avoid the circuit board 2 contacting the support plate 46 during the upward movement and affecting the deburring range.

[0026] The support frame 8 has symmetrically arranged limiting grooves 84 on the left and right sides of its inner wall, and the limiting grooves 84 match the circuit board body 2. The limiting grooves 84 enable the support frame 8 to limit the circuit board body 2, preventing the circuit board body 2 from shifting left and right, downward, or shaking during the deburring process. The support frame 8 has chip guide ramps 83 on the front and rear sides of its bottom. The chip guide ramps 83 prevent the chips generated during the deburring process from easily falling onto the support frame 8. The upper side of the left end face of the support frame 8 has an internal threaded through hole 82. The internal threaded through hole 82 is fitted with a positioning screw 81. The internal threaded through hole 82 and the positioning screw 81 can fix the circuit board body 2 inserted in the limiting groove 84, preventing the circuit board body 2 from shifting upward during the deburring process. The positioning screw 81 is a wing screw, which makes it easy for workers to tighten or loosen it by hand.

[0027] A support component 5 is provided between the support frame 8 and the processing table 1. The support component 5 is used to adjust the support frame 8 in height and lateral direction so that the multiple irregular holes 3 on the circuit board body 2 can be deburred by the deburring brush 47. A deburring component 4 is provided above the support frame 8 and is used to remove burrs from the front and rear edges of the irregular holes 3.

[0028] The deburring assembly 4 includes a drive motor 41, a support plate 42, a low-speed motor 43, a limiting cavity 44, a bidirectional threaded rod 45, a support plate 46, and a deburring brush 47. The support plate 46 is fixedly connected to the rear side of the upper end face of the processing table 1. The support plate 46 is connected to the processing table 1 by welding. The support plate 46 is L-shaped. The L-shaped support plate 46 can not only support the bidirectional threaded rod 45 and the low-speed motor 43, but also does not hinder the back-and-forth movement of the support plate 42. The upper end face of the support plate 46 has a limiting cavity 44, which matches the support plate 42. The limiting cavity 44 can limit the two sets of support plates 42 to prevent the two sets of support plates 42 from shaking or shifting during use.

[0029] A bidirectional threaded rod 45 is installed inside the limiting cavity 44. The external threads on the front and rear sides of the annular side of the bidirectional threaded rod 45 rotate in opposite directions. An internal threaded through hole 82 (not shown in the figure) is opened on the upper side of the support plate 42, and the internal threaded through hole 82 is engaged with the threads of the bidirectional threaded rod 45. When the bidirectional threaded rod 45, whose external threads on the front and rear sides of the annular side rotate in opposite directions, rotates, it will drive the two sets of support plates 42 to move synchronously and in opposite directions through the internal threaded through hole 82. A low-speed motor 43 is installed at the front end of the bidirectional threaded rod 45. The low-speed motor 43 is connected to the bidirectional threaded rod 45 through a coupling. The low-speed motor 43 is electrically connected to the external control cabinet next to it through a wire. When the low-speed motor 43 is working, it will drive the bidirectional threaded rod 45 to rotate at a low speed. The front and rear sides of the annular side of the bidirectional threaded rod 45 are threaded with support plates 42, which can support the drive motor 41.

[0030] A drive motor 41 is installed on the lower side of the front end face of the support plate 42. The drive motor 41 is electrically connected to the external control cabinet next to it through wires. A deburring brush 47 is installed on the transmission end of the drive motor 41. The deburring brush 47 is made of polishing brush. There are two sets of deburring brushes 47, and the two sets of deburring brushes 47 are the same size. When the drive motor 41 is working, it will drive the deburring brush 47 to rotate so that the rotating deburring brush 47 can remove the burrs on the edge of the irregular hole 3. The deburring brush 47 is a detachable structure. The circuit board body 2, which is inserted into the support frame 8, is located in the middle area between the two sets of deburring brushes 47, so that when the two sets of deburring brushes 47 move inward synchronously, they can simultaneously contact the front and rear end faces of the circuit board body 2, thereby simultaneously deburring the front and rear edges of the irregular hole 3 on the circuit board body 2.

[0031] Example 2:

[0032] Based on Embodiment 1, in this embodiment, when the multi-stage electric push rod is controlled to drive the support base 54 to move laterally left and right through the extension plate 55, the support base 54 can be adjusted laterally by driving the circuit board body 2 together through the lifting electric push rod 53 and the support frame 8. When the lifting electric push rod 53 is controlled to extend or retract, the support frame 8 can be lifted or lowered together with the circuit board body 2, so that the workers can adjust the irregular holes 3 opened on the circuit board body 2 between the two sets of deburring brushes 47 for subsequent deburring processing.

[0033] Support assembly 5 includes a right support plate 51, a support beam 52, a lifting electric actuator 53, a support base 54, an extension plate 55, a multi-stage electric actuator 56, and a left support plate 57. The left support plate 57 is fixedly connected to the left side of the upper surface of the processing table 1. The left support plate 57 is welded to both the processing table 1 and the support beam 52. The left support plate 57 can support the left end of both the multi-stage electric actuator 56 and the support beam 52. The multi-stage electric actuator 56 is installed inside the rear side of the left support plate 57. The extension range of the multi-stage electric actuator 56 is greater than the length of the circuit board body 2. The multi-stage electric actuator 56 is electrically connected to an external control cabinet via wires. During operation, the multi-stage electric actuator 56 can drive the support base 54 to move laterally left and right via the extension plate 55, thus facilitating processing. A right support plate 51 is fixedly connected to the right side of the upper end face of the table 1. The right support plate 51 is connected to the processing table 1 and the support beam 52 by welding. The right support plate 51 can support and fix the right end of the support beam 52. The support beam 52 is fixedly connected between the right support plate 51 and the left support plate 57. The support beam 52 can support and limit the support seat 54. The support seat 54 is provided on the outer surface of the support beam 52. The support seat 54 is a sliding structure. The support seat 54 is connected to the extension plate 55 and the limiting rod 59 by welding. The support seat 54 can support the lifting electric push rod 53 and the limiting rod 59. The extension plate 55 is connected to the left side of the rear end face of the support seat 54. The extension plate 55 enables the multi-stage electric push rod 56 to drive the support seat 54 to move laterally.

[0034] A lifting electric actuator 53 is installed between the support base 54 and the support frame 8. The lifting electric actuator 53 is electrically connected to the external control cabinet next to it through a wire. The extension range of the lifting electric actuator 53 is greater than the vertical width of the circuit board body 2. When working, the lifting electric actuator 53 can drive the support frame 8 to rise and fall. A limit rod 59 is fixedly connected to the right side of the upper end face of the support base 54. A guide sleeve rod 58 is connected to the right side of the lower end face of the support frame 8. The guide sleeve rod 58 is connected to the support frame 8 by welding. The guide sleeve rod 58 matches the limit rod 59. The matching guide sleeve rod 58 and limit rod 59 can limit the support frame 8 and prevent the support frame 8 from shaking or shifting during the lifting and lowering process. A rectangular cavity 541 is opened inside the support base 54, and the rectangular cavity 541 matches the support beam 52. The rectangular cavity 541 facilitates the support beam 52 to limit the support base 54 and prevent the support base 54 from shaking or shifting during the lateral movement process.

[0035] Working principle: After milling irregular holes 3 at designated positions on the circuit board 2 using an external CNC drilling machine, the operator first vertically inserts the circuit board 2 onto the support frame 8, and then manually tightens the positioning screws 81 to fix the circuit board 2 (see reference). Figure 1 Next, the multi-stage electric actuator is controlled to move the support base 54 laterally left and right via the extension plate 55. The support base 54, in turn, moves the circuit board 2 laterally via the lifting electric actuator 53 and the support frame 8. When the lifting electric actuator 53 is extended or retracted, the support frame 8 moves the circuit board 2 up and down, thereby adjusting the irregular hole 3 on the circuit board 2 between the two sets of deburring brushes 47. After adjustment, the low-speed motor 43 is controlled to drive the bidirectional threaded rod 45 to rotate forward at low speed. The bidirectional threaded rod 45 rotates forward at low speed, causing the front and rear support hanging plates 42 to move inward synchronously through the internal threaded through hole 82. This causes the front and rear support hanging plates 42 to move inward together with the front and rear deburring brushes 47 via the drive motor 41, and to be aligned with the front and rear of the irregular hole 3. The two sets of drive motors 41 are activated at the side edges to drive the two sets of deburring brushes 47 to rotate and remove the burrs on the front and rear edges of the irregular hole 3 simultaneously. During this process, the operator only needs to control the multi-stage electric push rod 56 and the lifting electric push rod 53 to move the support frame 8 to move the circuit board left and right or up and down so that the next set of irregular holes 3 can be adjusted between the two sets of deburring brushes 47 for deburring. After the edge of the irregular hole 3 is deburred, the low-speed motor 43 is reversed first so that the front and rear support hanging plates 42 can move outward synchronously with the front and rear deburring brushes 47 through the drive motor 41 to separate from the circuit board body 2. Then, the positioning screw 81 can be loosened to lift the circuit board body 2 away.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCB circuit board special-shaped hole processing device, comprising a processing table (1), a chip guiding through cavity (6), a collection box (7) and a supporting frame (8), characterized in that: The upper surface of the processing table (1) is provided with a chip guide cavity (6), and a collection box (7) is inserted directly below the chip guide cavity (6). A support frame (8) is installed above the processing table (1), and a circuit board body (2) is inserted inside the support frame (8). The circuit board body (2) has irregular holes (3) inside. A support component (5) is provided between the support frame (8) and the processing table (1), and the support component (5) is used to adjust the support frame (8) by lifting and lateral adjustment. A deburring component (4) is provided above the support frame (8), and the deburring component (4) is used to remove burrs from the front and rear edges of the irregular hole (3).

2. The device for processing irregular hole of PCB circuit board according to claim 1, characterized in that: The deburring assembly (4) includes a drive motor (41), a support plate (42), a low-speed motor (43), a limiting cavity (44), a bidirectional threaded rod (45), a support plate (46), and a deburring brush (47). The support plate (46) is fixedly connected to the rear side of the upper end face of the processing table (1). The supporting plate (46) has a limiting cavity (44) on its upper end face. The bidirectional threaded rod (45) is installed inside the limiting cavity (44). The low-speed motor (43) is installed at the front end of the bidirectional threaded rod (45). The support plate (42) is threaded to both the front and rear sides of the annular side of the bidirectional threaded rod (45). The drive motor (41) is installed on the lower side of the front end face of the support plate (42). The deburring brush (47) is installed at the transmission end of the drive motor (41).

3. The device for processing irregular hole of PCB circuit board according to claim 1, characterized in that: The support assembly (5) includes a right support plate (51), a support beam (52), a lifting electric push rod (53), a support seat (54), an extension plate (55), a multi-stage electric push rod (56), and a left support plate (57). The left support plate (57) is fixedly connected to the left side of the upper end face of the processing table (1). The multi-stage electric push rod (56) is installed inside the rear side of the left support plate (57). The right support plate (51) is fixedly connected to the right side of the upper end face of the processing table (1). The support beam (52) is fixedly connected between the right support plate (51) and the left support plate (57). The support seat (54) is provided on the outer surface of the support beam (52). The extension plate (55) is connected to the left side of the rear end face of the support seat (54). The lifting electric push rod (53) is installed between the support seat (54) and the support frame (8).

4. The device for processing irregular hole of PCB circuit board according to claim 3, characterized in that: A limiting rod (59) is fixedly connected to the right side of the upper end face of the support base (54), and a guide sleeve (58) is connected to the right side of the lower end face of the support frame (8), and the guide sleeve (58) matches the limiting rod (59).

5. The device for processing irregular hole of PCB circuit board according to claim 3, characterized in that: The support base (54) has a rectangular cavity (541) inside, and the rectangular cavity (541) matches the support beam (52). The extension range of the lifting electric push rod (53) is greater than the vertical width of the circuit board body (2), and the extension range of the multi-stage electric push rod (56) is greater than the horizontal length of the circuit board body (2).

6. The device for processing irregular hole of PCB circuit board according to claim 1, characterized in that: The support frame (8) has symmetrically provided limiting grooves (84) on the left and right sides of its inner wall, and the limiting grooves (84) match the circuit board body (2). The support frame (8) has chip guide ramps (83) on the front and rear sides of its bottom.

7. The device for processing irregular hole of PCB circuit board according to claim 1, characterized in that: The inner threaded through hole (82) is internally threaded and mounted with a positioning screw (81), and the positioning screw (81) is a butterfly screw.

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