A kind of interlayer hole site pre-positioning compensation puncher for multilayer PCB board
Patent Information
- Application Number
- CN202522122702.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-10-09
AI Technical Summary
[0003]在对多层PCB板进行打孔操作时，需要将多层PCB板置于操作台上，然后通过相对设置的夹持机构进行固定，随后降下钻头完成打孔操作，可由于在打孔时，钻头易在高速的转动下向多层PCB板传递不同方向上的力作用，虽有相对设置的夹持机构作用，但其仅作用在多层PCB板相对的两侧上，对于另一直线方向缺乏固定，可若增设夹持机构作用PCB板的另外两侧，便需要相应的增设直线驱动模组（如气缸等），会在操作台上增加空间的占据，影响操作人员在一旁的行走，以及加工时的取放料
1、本实用新型通过设置两组夹持块与推板组合结构，可在夹持PCB板两侧的基础上，进一步通过L型推板从斜向对PCB板边角进行夹持，形成多方向包裹式固定，有效抵抗钻孔时钻头传递的多向力，防止PCB板移位或振动。
Smart Images
Figure CN224765661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of multilayer PCB board processing technology, and in particular to a pre-positioning compensation drilling machine for interlayer holes in multilayer PCB boards. Background Technology
[0002] PCB, or Printed Circuit Board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical interconnection. Because it is manufactured using electronic printing techniques, it is called a "printed" circuit board. Multilayer PCBs are circuit carriers composed of multiple layers of insulating substrates and conductive layers, achieving integrated connections of electronic components through high-density wiring technology. They typically have four or more layers, which are bonded together using positioning systems and insulating materials to form complex circuit structures.
[0003] When drilling holes in multilayer PCBs, the PCB is placed on the worktable and fixed by a clamping mechanism. The drill bit is then lowered to complete the drilling operation. However, during drilling, the drill bit, rotating at high speed, transmits forces in different directions to the PCB. Although the clamping mechanism is in place, it only acts on opposite sides of the PCB, lacking fixation in the other linear direction. Adding a clamping mechanism to act on the other two sides would require additional linear drive modules (such as cylinders), increasing space on the worktable and affecting operator movement and material handling. Therefore, we propose a pre-positioning compensation drilling machine for interlayer holes in multilayer PCBs. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a pre-positioning compensation drilling machine for interlayer holes in multilayer PCBs.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pre-positioning compensation drilling machine for interlayer holes in multilayer PCB boards, comprising an operating table, a support platform installed on the top of one end of the operating table, a processing table installed on the top of one end of the operating table, a plurality of through holes arranged at intervals on the processing table, and a drilling tool set above the processing table, the drilling tool being fixed to the operating table. Strip-shaped clamping blocks are provided at both ends above the processing table. The bottom surface of the clamping blocks is fitted with the top surface of the processing table with a clearance. A pushing mechanism is vertically installed in the middle of the side where the two clamping blocks are relatively far apart. The pushing mechanism is installed on a fixed base, and the fixed base is fixed on the operating table. A slot is provided on the top of the clamping block, and the slot extends through the bottom of the clamping block. A lead screw is provided in the slot, and the end of the lead screw is rotatably connected to the end of the slot. A first drive motor is installed at one end of the lead screw and is fixed on the outer wall of the clamping block. A movable seat is connected to the lead screw through a nut thread. A connecting frame is installed on the top of the movable seat. A push plate is connected to the other end of the connecting frame. The push plate is L-shaped, and the bottom of the push plate is clearance-fitted with the top surface of the processing table. The two push plates are arranged opposite each other.
[0006] Preferably, a control box is provided on one side of the operating table, and a controller is provided inside the control box. The controller is connected to the push mechanism and the first drive motor respectively through wires.
[0007] Preferably, the punch includes a support column located on the side of the processing table away from the control box and vertically fixed to the operating table. A first linear motor is installed on the side of the support column near the processing table and is connected to the controller via a wire. A support beam is installed on the first linear motor, and a second linear motor is installed at the bottom of the support beam and is connected to the controller via a wire. A motor housing is installed at the bottom of the second linear motor, and a second drive motor is installed inside the motor housing. The second drive motor is connected to the controller via a wire, and the drive end of the second drive motor passes through the bottom of the motor housing and the two are rotatably connected. A drill bit is connected to the drive end of the second drive motor via a chuck.
[0008] Preferably, an annular pressure plate is provided below the drill bit, and several connecting shafts arranged at intervals are vertically installed on the top of the pressure plate. The top of the connecting shafts is placed inside the casing, and the top of the casing is fixed to the motor housing. A compression spring is sleeved on the connecting shaft, one end of the compression spring is fixed to the pressure plate, and the other end of the compression spring is fixed to the motor housing.
[0009] Preferably, a guide shaft is provided parallel to the side of the pushing mechanism, one end of the guide shaft is fixed to the clamping block, and the other end of the guide shaft slides through the fixed seat.
[0010] Preferably, strip-shaped slide rails are installed on both sides of the slot, and sliders are slidably installed on the slide rails, with the sliders fixed to the movable seat.
[0011] Preferably, the operating table has a cavity with an inclined bottom surface inside, wherein a through hole communicates with the cavity, and a waste discharge port is provided at the end of the operating table, the frontal projection of the waste discharge port is located at the bottom of the cavity and communicates with the cavity.
[0012] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model, by setting up a combination structure of two sets of clamping blocks and push plates, can further clamp the corners of the PCB board from the oblique direction by using L-shaped push plates on the basis of clamping the two sides of the PCB board, forming a multi-directional wrapping fixation, which effectively resists the multi-directional force transmitted by the drill bit during drilling and prevents the PCB board from shifting or vibrating.
[0013] 2. This utility model integrates the clamping structure on both sides of the processing table, eliminating the need for additional linear drive modules (such as cylinders) and reducing the equipment's footprint. In addition, the push plate is driven by a lead screw, resulting in a compact structure that does not affect the operator's movement and material handling next to the equipment. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the operating table of this utility model; Figure 3 This is a schematic diagram of the clamping block structure of this utility model; Figure 4 This is a schematic diagram of the hole punch structure of this utility model.
[0015] In the diagram: 1. Operating table; 2. Control box; 3. Support platform; 4. Machining table; 5. Through hole; 6. Clamping block; 7. Pushing mechanism; 8. Fixed seat; 9. Guide shaft; 10. Slot; 11. Lead screw; 12. First drive motor; 13. Moving seat; 14. Connecting frame; 15. Push plate; 16. Slide rail; 17. Slider; 18. Support column; 19. First linear motor; 20. Support beam; 21. Second linear motor; 22. Motor box; 23. Second drive motor; 24. Drill bit; 25. Sleeve; 26. Connecting shaft; 27. Compression spring; 28. Pressure plate; 29. Cavity; 30. Waste outlet. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0017] Example Reference Figures 1-4 A pre-positioning and compensation drilling machine for interlayer hole positions of multilayer PCBs includes an operating table 1, a support platform 3 is installed on the top of one end of the operating table 1, and multiple placement racks are provided on the top surface of the support platform 3 for placing multilayer PCBs to be processed and processed multilayer PCBs.
[0018] A control box 2 is installed on one side of the operating console 1. The control box 2 contains a controller. In actual use, the controller is one of the following: PLC logic controller, control motherboard, or control host. In addition, a touch screen display is installed on the outer wall of the control box 2. The touch screen display is connected to the controller through wires to control the drilling machine.
[0019] A processing table 4 is installed on the top of one end of the operating table 1. Multiple through holes 5 are arranged at intervals on the processing table 4. A hole punch is installed above the processing table 4 and is fixed to the operating table 1.
[0020] The punch includes a support column 18, located on the side of the processing table 4 away from the control box 2, and vertically fixed to the operating table 1. A first linear motor 19 is installed on the side of the support column 18 closest to the processing table 4, and the first linear motor 19 is connected to the controller via wires. A support beam 20 is installed on the first linear motor 19, and a second linear motor 21 is installed at the bottom of the support beam 20, connected to the controller via wires. A motor housing 22 is installed at the bottom of the second linear motor 21. The chassis 22 is equipped with a second drive motor 23, which is connected to the controller via wires. The drive end of the second drive motor 23 passes through the bottom of the motor chassis 22 and the two are rotatably connected. A drill bit 24 is connected to the drive end of the second drive motor 23 via a chuck, allowing the drill bit 24 to perform reciprocating linear motion and lifting motion above the processing table 4. Thus, after the multilayer PCB board to be processed is placed on the processing table 4, the drill bit 24 can be controlled to descend and start rotating, thereby completing the drilling operation on the multilayer PCB board.
[0021] It should be noted that a camera is installed at the bottom of the motor housing 22. The camera is connected to the controller via a wire, which allows for the imaging and identification of multi-layer PCB boards to better determine the drilling location.
[0022] Furthermore, as the drill bit 24 falls, an annular pressure plate 28 is provided below the drill bit 24. Several spaced connecting shafts 26 are vertically mounted on the top of the pressure plate 28. The top of the connecting shafts 26 is placed inside the sleeve 25, and the top of the sleeve 25 is fixed to the motor housing 22. A compression spring 27 is sleeved on the connecting shaft 26. One end of the compression spring 27 is fixed to the pressure plate 28, and the other end of the compression spring 27 is fixed to the motor housing 22. The pressure plate 28 will contact the multilayer PCB board before the drill bit 24. As the drill bit 24 continues to fall, the pressure plate 28 will continuously act on the connecting shafts 26 to slide inside the sleeve 25, thereby compressing the compression spring 27 and providing elastic force to the pressure plate 28. This can provide downward pressure on the multilayer PCB board and improve the stability of the multilayer PCB board during drilling.
[0023] Furthermore, a cavity 29 with an inclined bottom surface is provided inside the operating table 1, wherein the through hole 5 communicates with the cavity 29, and a waste discharge port 30 is provided at the end of the operating table 1. The frontal projection of the waste discharge port 30 is located at the bottom of the cavity 29 and communicates with the cavity 29. During the drilling process, the waste chips that fall into the through hole 5 will fall into the cavity 29 along the through hole 5 and be discharged from the waste discharge port 30 along the bottom surface of the cavity 29.
[0024] At both ends of the processing table 4, there are strip-shaped clamping blocks 6. The bottom surface of the clamping blocks 6 is fitted with the top surface of the processing table 4 with a clearance. A pushing mechanism 7 is vertically installed in the middle of the side of the two clamping blocks 6 that are relatively far apart. The pushing mechanism 7 is connected to the controller through a wire. The pushing mechanism 7 is installed on the fixed base 8, and the fixed base 8 is fixed on the operating table 1. In actual use, the pushing mechanism 7 is one of an electric push rod, a cylinder, or a hydraulic cylinder. After the multilayer PCB board to be processed is placed on the processing table 4, the pushing mechanisms 7 at both ends will push the clamping blocks 6 closer to the multilayer PCB board, thereby clamping the multilayer PCB board. In addition, during the drilling process, the multilayer PCB board can be controlled to move horizontally on the processing table 4 by the simultaneous action of the two pushing mechanisms 7. With the operation of the linear motor, the drill bit 24 can be moved in multiple directions.
[0025] Furthermore, a guide shaft 9 is provided parallel to the side of the pushing mechanism 7. One end of the guide shaft 9 is fixed to the clamping block 6, and the other end of the guide shaft 9 slides through the fixed seat 8 to provide a guide for the linear movement of the clamping block 6 and ensure the stability of the clamping block 6 when it moves.
[0026] A slot 10 is provided on the top of the clamping block 6, extending through the bottom of the clamping block 6. A lead screw 11 is provided in the slot 10, with its end rotatably connected to the end of the slot 10. A first drive motor 12 is installed at one end of the lead screw 11, and the first drive motor 12 is connected to a controller via a wire. The first drive motor 12 is fixed to the outer wall of the clamping block 6. A movable seat 13 is threaded onto the lead screw 11, and a connecting frame 14 is installed on the top of the movable seat 13. A push plate 15 is connected to the other end of the connecting frame 14. The push plate 15 is L-shaped, and its bottom is close to the top surface of the processing table 4. The two push plates 15 are arranged opposite each other. After the clamping block 6 is placed against the side of the multilayer PCB board, the lead screw 11 will start to rotate, thereby controlling the push plate 15, which is perpendicular to the outer wall of the clamping block 6, to approach the multilayer PCB board. Under the action of the two sets of clamping blocks 6 and push plates 15, the two corners on the oblique angle of the multilayer PCB board can be clamped. This allows the multilayer PCB board to be fully wrapped and secured without affecting the space occupied by the drilling machine, improving the stability of the multilayer PCB board during drilling. It also allows the side of the operating table 1 away from the support column 18 to be fully open during loading and unloading, facilitating the loading and unloading operations.
[0027] Furthermore, strip-shaped slide rails 16 are installed on both sides of the inside of the slot 10. A slider 17 is slidably installed on the slide rails 16. The slider 17 is fixed to the movable seat 13 and guides the movement of the movable seat 13 on the lead screw 11, so that the movable seat 13 always moves in a straight line along the axis of the lead screw 11, thereby improving the movement stability of the push plate 15.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A drilling machine for pre-positioning and compensating interlayer holes in multilayer PCBs, characterized in that: Includes an operating table (1), a support platform (3) is installed on the top of one end of the operating table (1), a processing table (4) is installed on the top of one end of the operating table (1), a plurality of through holes (5) are arranged at intervals on the processing table (4), and a punch is set above the processing table (4), and the punch is fixed to the operating table (1). Strip-shaped clamping blocks (6) are provided at both ends above the processing table (4). The bottom surface of the clamping block (6) is fitted with the top surface of the processing table (4) with a clearance. A pushing mechanism (7) is vertically installed in the middle of the side where the two clamping blocks (6) are relatively far apart. The pushing mechanism (7) is installed on the fixed seat (8), and the fixed seat (8) is fixed on the operating table (1). A slot (10) is provided on the top of the clamping block (6), and the slot (10) passes through the bottom of the clamping block (6). A lead screw (11) is provided in the slot (10). The end of the lead screw (11) is rotatably connected to the end of the slot (10). A first drive motor (12) is installed at one end of the lead screw (11). The first drive motor (12) is fixed on the outer wall of the clamping block (6). A movable seat (13) is connected to the lead screw (11) by a nut thread. A connecting frame (14) is installed on the top of the movable seat (13). A push plate (15) is connected to the other end of the connecting frame (14). The push plate (15) is L-shaped, and the bottom of the push plate (15) is clearance-fitted with the top surface of the processing table (4). The two push plates (15) are arranged opposite to each other.
2. The interlayer via site pre-positioning and compensation puncher for multi-layer PCB according to claim 1, characterized in that: A control box (2) is provided on one side of the control panel (1). A controller is provided inside the control box (2). The controller is connected to the push mechanism (7) and the first drive motor (12) respectively through wires.
3. The pre-positioning and compensation puncher for the interlayer hole site of the multi-layer PCB according to claim 2, characterized in that: The punch includes a support column (18), which is located on the side of the processing table (4) away from the control box (2) and is vertically fixed on the operating table (1). A first linear motor (19) is installed on the side of the support column (18) close to the processing table (4). The first linear motor (19) is connected to the controller via a wire. A support beam (20) is installed on the first linear motor (19). A second linear motor (21) is installed at the bottom of the support beam (20). The second linear motor (21) is connected to the controller via a wire. A motor box (22) is installed at the bottom of the second linear motor (21). A second drive motor (23) is installed inside the motor box (22). The second drive motor (23) is connected to the controller via a wire. The drive end of the second drive motor (23) passes through the bottom of the motor box (22) and the two are rotatably connected. A drill bit (24) is connected to the drive end of the second drive motor (23) via a chuck.
4. The pre-positioning and compensation puncher for the interlayer hole site of the multi-layer PCB according to claim 3, characterized in that: Below the drill bit (24) is a ring-shaped pressure plate (28). Several connecting shafts (26) are vertically installed on the top of the pressure plate (28) at intervals. The top of the connecting shafts (26) is placed inside the sleeve (25), and the top of the sleeve (25) is fixed to the motor housing (22). A compression spring (27) is sleeved on the connecting shaft (26). One end of the compression spring (27) is fixed on the pressure plate (28), and the other end of the compression spring (27) is fixed on the motor housing (22).
5. The interlayer via site pre-positioning and compensation puncher for multi-layer PCB according to claim 1, characterized in that: A guide shaft (9) is provided parallel to the side of the pushing mechanism (7). One end of the guide shaft (9) is fixed on the clamping block (6), and the other end of the guide shaft (9) slides through the fixed seat (8).
6. The pre-positioning and compensation puncher for the interlayer hole site of the multi-layer PCB board according to claim 1, characterized in that: A strip-shaped slide rail (16) is installed on both sides inside the slot (10), and a slider (17) is slidably installed on the slide rail (16). The slider (17) is fixed to the moving seat (13).
7. The pre-positioning and compensation puncher for the interlayer hole site of the multi-layer PCB board according to claim 1, characterized in that: The operating table (1) has a cavity (29) with an inclined bottom surface inside, wherein a through hole (5) is connected to the cavity (29), and a waste discharge port (30) is opened at the end of the operating table (1). The frontal projection of the waste discharge port (30) is located at the bottom of the cavity (29) and is connected to the cavity (29).