A drilling device for processing a circuit board

Abstract

The utility model provides a kind of drilling device for circuit board processing, it is related to circuit board drilling equipment technical field, including main drilling module, lower ring frame and upper vertical sliding rack, the lower part of main drilling module is provided with lower ring frame, upper vertical sliding rack is provided in the upper part of main drilling module, the inside circumference of lower ring frame is rotationally provided with transfer ring, the top annular array of transfer ring is provided with upper air deflector, the bottom annular array of transfer ring is provided with lower brush plate, lower ring frame side is communicated with side communication hose, transfer ring is in the middle of lower ring frame and side communication hose communication hole position, the bottom bristle of lower brush plate and lower ring frame bottom are flush setting. Lower brush plate pushes the scrap away from the side of side communication hose to the position close to side communication hose to collect, reduce the residue of scrap, solve the problem that scrap residue is more likely to appear on the side of remote negative pressure fan communication pipeline.

Description

Technical Field

[0001] This utility model relates to the field of circuit board drilling equipment, and in particular to a drilling device for circuit board processing. Background Technology

[0002] During the manufacturing process of printed circuit boards (PCBs), holes of various diameters are drilled on the PCB using a drilling device. The holes on the PCB enable electrical connections between different layers or provide mounting holes for the pins of electronic components or other mechanical parts.

[0003] The drilling device collects drilling debris using a negative pressure fan. The negative pressure fan draws air through a ring cover that surrounds the drill bit. The lower part of the ring cover is connected to the circuit board for air intake. After the drilling device finishes drilling, the ring cover moves upward and adheres to the circuit board, causing the circuit board to become uneven or bumpy. The suction force is stronger on the side of the ring cover closer to the negative pressure fan connecting pipe, while debris is more likely to remain on the side of the ring cover further away from the negative pressure fan connecting pipe. Utility Model Content

[0004] This utility model provides a drilling device for circuit board processing. After drilling is completed, the upper sealing ring and the lower ring frame are separated. Air is introduced from both the top and bottom of the lower ring frame, which weakens the suction force of the bottom of the lower ring frame on the circuit board and avoids problems such as unevenness and deformation of the circuit board due to excessive suction. The lower brush plate pushes the waste from the side away from the side connecting hose to the position close to the side connecting hose for collection, further reducing waste residue and improving the cleanliness of the circuit board surface.

[0005] This utility model provides a drilling device for circuit board processing, specifically including a main drilling module, a lower ring frame, and an upper vertical slide frame. The lower ring frame is provided at the lower part of the main drilling module, and the upper vertical slide frame is provided at the upper part of the main drilling module. An upper telescopic frame is slidably connected to the upper part of the main drilling module. The upper telescopic frame is provided with a telescopic cylinder to support the movement and telescopic extension of the main drilling module. An upper sealing ring is slidably connected to the lower outer side of the main drilling module, and side connecting slide columns are fixedly connected to both sides of the upper sealing ring.

[0006] Furthermore, the side connecting slide of the upper sealing ring is vertically slidably connected to the main drilling module, and a side support spring is provided between the lower ring frame and the main drilling module.

[0007] Furthermore, a transfer ring is rotatably arranged on the inner circumference of the lower ring frame. An upper air guide plate is arranged in an annular array at the top of the transfer ring, and a lower brush plate is arranged in an annular array at the bottom of the transfer ring. A side connecting hose is connected to the side of the lower ring frame, and the tail of the side connecting hose is connected to a vacuum fan to perform the suction and collection of drilling waste.

[0008] Furthermore, the transfer ring is located in the middle of the connecting hole between the lower ring frame and the side connecting hose, the bottom bristles of the lower brush plate are flush with the bottom of the lower ring frame, and the transfer ring surrounds the outside of the drill bit of the main drilling module.

[0009] Furthermore, both sides of the lower ring frame are fixedly connected with side connecting slide columns, the side connecting slide columns of the lower ring frame are vertically slidably connected to the main drilling module, and a side support spring is provided between the lower ring frame and the main drilling module.

[0010] Furthermore, the upper sealing ring is located vertically above the lower ring frame, and the side support spring supports the lower ring frame to move downward. The lower ring frame and the upper sealing ring are in a spaced-out state, and air is introduced from both the top and bottom of the lower ring frame, which weakens the suction force of the bottom of the lower ring frame on the circuit board. The suction force of the bottom of the lower ring frame on the circuit board is quickly reduced to 30% to 40% of the initial value, avoiding problems such as undulation and deformation of the circuit board due to excessive suction force. When the lower ring frame moves upward, the lower ring frame and the upper sealing ring are in a sealed state, which increases the suction force of the lower ring frame on the bottom drilling debris.

[0011] Furthermore, the upper vertical slide frame and the upper horizontal slide frame are slidably connected. The upper horizontal slide frame is fixed to the top of the lower base. The middle rotating shaft of the lower base is engaged with the middle conveyor belt. The upper vertical slide frame and the upper telescopic frame are vertically slidably connected. The upper vertical slide frame and the upper horizontal slide frame are electrically driven sliding mechanisms. The upper vertical slide frame drives the upper telescopic frame to move vertically through a motor. The upper horizontal slide frame drives the upper vertical slide frame to move horizontally through a motor. The upper horizontal slide frame drives the upper vertical slide frame to move horizontally and laterally. The middle conveyor belt drives the circuit board to move longitudinally, realizing the switching of different drilling positions on the circuit board.

[0012] This utility model provides a drilling device for circuit board processing, which has the following advantages:

[0013] The lower ring frame contacts the circuit board before the drill bit of the main drilling module. The upper sealing ring continues to move down with the main drilling module and fits and seals against the top of the lower ring frame. After the top of the lower ring frame is sealed, the lower ring frame increases the suction force on the drilling debris at the bottom. After drilling is completed, the upper sealing ring and the lower ring frame separate, and air enters from both the top and bottom of the lower ring frame, weakening the suction force on the circuit board at the bottom of the lower ring frame. This effectively avoids problems such as undulation and deformation of the circuit board caused by excessive suction.

[0014] The airflow generated by the fan drives the upper air guide plate, the intermediate transfer ring, and the lower brush plate to rotate. The bristles at the bottom of the lower brush plate make full contact with the surface of the circuit board, forming an efficient cleaning effect. The lower brush plate pushes the waste from the side away from the side connecting hose to the position close to the side connecting hose for collection, further reducing the residue of waste, greatly improving the cleanliness of the circuit board surface, and reducing the risk of subsequent processing defects caused by waste residue. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0019] Figure 2 A schematic diagram of the main drilling module structure of this application is shown;

[0020] Figure 3 A schematic diagram of the lower ring frame structure of this application is shown;

[0021] Figure 4 A schematic diagram of the structure of the upper sealing ring and the lower ring frame in the separated state of this application is shown;

[0022] Figure 5 This paper shows a schematic diagram of the lower ring frame in half section.

[0023] Figure 6 This diagram shows a structural schematic of the upper sealing ring and lower ring frame in a sealed state according to this application.

[0024] Figure label:

[0025] 1. Main drilling module; 101. Upper telescopic frame; 102. Upper sealing ring; 103. Side connecting slide column; 104. Side support spring;

[0026] 2. Lower ring frame; 201. Transfer ring; 202. Upper air guide plate; 203. Lower brush plate; 204. Side connecting hose;

[0027] 3. Upper vertical slide frame; 301. Upper horizontal slide frame; 302. Lower base; 303. Middle conveyor belt. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example 1: Please refer to Figures 1 to 6 :

[0030] This utility model proposes a drilling device for circuit board processing, including a main drilling module 1, a lower ring frame 2, and an upper vertical slide frame 3. An upper telescopic frame 101 is slidably connected to the upper part of the main drilling module 1. The upper telescopic frame 101 is equipped with a telescopic cylinder to support the movement and telescopic extension of the main drilling module 1. An upper sealing ring 102 is slidably connected to the lower outer side of the main drilling module 1. Side connecting slide columns 103 are fixedly connected to both sides of the upper sealing ring 102. The side connecting slide columns 103 of the upper sealing ring 102 are vertically slidably connected to the main drilling module 1. A side support spring 104 is provided between the lower ring frame 2 and the main drilling module 1. The lower ring frame 2 is located at the lower part of the main drilling module 1. A transfer ring 201 is rotatably mounted on the inner circumferential side of the lower ring frame 2. The top annular array is provided with an upper air guide plate 202, the bottom annular array of the transfer ring 201 is provided with a lower brush plate 203, the side of the lower ring frame 2 is connected to a side connecting hose 204, the tail of the side connecting hose 204 is connected to a vacuum fan to perform the suction and collection of drilling waste. The transfer ring 201 is located in the middle of the connection hole between the lower ring frame 2 and the side connecting hose 204. The bottom bristles of the lower brush plate 203 are flush with the bottom of the lower ring frame 2. The transfer ring 201 surrounds the outside of the drill bit of the main drilling module 1. The sides of the lower ring frame 2 are fixedly connected with side connecting slide columns 103. The side connecting slide columns 103 of the lower ring frame 2 are vertically slidably connected to the main drilling module 1. A side support spring 104 is provided between the lower ring frame 2 and the main drilling module 1.

[0031] The main drilling module 1 is equipped with an upper vertical slide 3. The upper end of the upper vertical slide 3 is slidably connected to the upper horizontal slide 301. The upper horizontal slide 301 is fixed to the top of the lower base 302. The middle shaft of the lower base 302 is engaged with a middle conveyor belt 303. The upper vertical slide 3 and the upper telescopic frame 101 are vertically slidably connected. The upper vertical slide 3 and the upper horizontal slide 301 are electrically driven sliding mechanisms. The upper vertical slide 3 drives the upper telescopic frame 101 to move vertically through a motor. The upper horizontal slide 301 drives the upper vertical slide 3 to move horizontally through a motor. The upper horizontal slide 301 drives the upper vertical slide 3 to move horizontally. The middle conveyor belt 303 drives the circuit board to move longitudinally, realizing the switching of different drilling positions on the circuit board.

[0032] In this embodiment, the upper sealing ring 102 is located vertically above the lower ring frame 2, and the side support spring 104 supports the lower ring frame 2 to move downward. The lower ring frame 2 and the upper sealing ring 102 are in a spaced-out state. Air enters from both the top and bottom of the lower ring frame 2, which weakens the suction force of the bottom of the lower ring frame 2 on the circuit board. The suction force of the bottom of the lower ring frame 2 on the circuit board is quickly reduced to 30% to 40% of the initial value, avoiding problems such as undulation and deformation of the circuit board due to excessive suction force. When the lower ring frame 2 moves upward, the lower ring frame 2 and the upper sealing ring 102 are in a sealed state, which increases the suction force of the lower ring frame 2 on the bottom drilling debris.

[0033] In this second embodiment, based on the first embodiment, side connecting hoses 204 are provided on both sides of the lower ring frame 2. This reduces the attenuation of suction force on the side of the lower ring frame 2 away from the side connecting hose 204 when there is only one side connecting hose 204. It also reduces the likelihood of drilling debris remaining on the side of the lower ring frame 2 away from the side connecting hose 204, and improves the balance of suction force inside the lower ring frame 2.

[0034] The working principle of this embodiment is as follows: Circuit boards are placed on top of the middle conveyor belt 303. The holes around the circuit boards and the pin holes of the middle conveyor belt 303 are positioned and fixed by pins. The rotating shaft of the middle conveyor belt 303 is driven by a motor to rotate. The middle conveyor belt 303 transports the top circuit boards to below the main drilling module 1. The upper vertical slide 3 drives the main drilling module 1 to move vertically to adjust its height. The telescopic cylinder of the upper telescopic frame 101 supports the main drilling module 1 to move downwards. The lower drill bit of the main drilling module 1 rotates to drill holes in the circuit boards below. The upper horizontal slide 301 drives the upper... The vertical slide 3 moves horizontally, while the central conveyor belt 303 drives the circuit board to move longitudinally, enabling the switching of different drilling positions on the circuit board. This is the same structure as existing devices. During the downward movement of the main drilling module 1, the side support springs 104 support the upper sealing ring 102 below the main drilling module 1. The lower ring frame 2 contacts the circuit board before the drill bit of the main drilling module 1. The main drilling module 1 continues to move downward and further compresses the side support springs 104 on both sides of the lower ring frame 2. The compressed side support springs 104 increase the adhesion between the lower ring frame 2 and the circuit board. As the main drilling module 1 continues to move downwards, the upper sealing ring 102 comes into contact with the top of the lower ring frame 2. After the top of the lower ring frame 2 is sealed, the drill bit of the main drilling module 1 is inside the lower ring frame 2. The negative pressure fan starts and connects to the lower ring frame 2 through the side connecting hose 204. The lower ring frame 2 forms a negative pressure suction, sucking in the drilling debris from the drill bit of the main drilling module 1. The lower ring frame 2 increases the suction force on the drilling debris at the bottom. After drilling is completed, the main drilling module 1 moves upwards, and the main drilling module 1 and the upper sealing ring 102 move upwards synchronously. The upper sealing ring 102 is sealed due to the side connections on both sides. The sliding column 103 limits the maximum range of movement, and the upper sealing ring 102 and the lower ring frame 2 maintain a certain distance. After the upper sealing ring 102 and the lower ring frame 2 separate, air enters from both the top and bottom of the lower ring frame 2, weakening the suction force of the bottom of the lower ring frame 2 on the circuit board. The suction force of the bottom of the lower ring frame 2 on the circuit board is quickly reduced to 30% to 40% of the initial value. This dynamic suction adjustment mechanism effectively avoids problems such as undulation and deformation of the circuit board due to excessive suction, and also avoids repeated switching and adjustment of the negative pressure fan. The negative pressure fan maintains a stable power, which is conducive to saving electricity.

[0035] The drill bit of the main drilling module 1 passes through the center hole of the transfer ring 201. The lower brush plate 203 surrounds the outside of the drill bit of the main drilling module 1. The airflow generated by the fan drives the upper air guide plate 202, the transfer ring 201 and the lower brush plate 203 to rotate. The bristles at the bottom of the lower brush plate 203 make full contact with the surface of the circuit board, forming an efficient cleaning effect. The bristles of the lower brush plate 203 clean up the debris generated by the drilling of the circuit board. The rotation of the lower brush plate 203 can also push the debris away from the side connecting hose 204 to the position closer to the side connecting hose 204 for collection, reducing the dead corners of debris collection, further reducing debris residue, further improving the cleanliness of the circuit board surface, and reducing the risk of subsequent processing defects and equipment failures caused by debris residue.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.

[0038] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A drilling device for circuit board processing, comprising: The main drilling module (1), the lower ring frame (2), and the upper vertical slide frame (3) are characterized in that the lower part of the main drilling module (1) is provided with the lower ring frame (2), the upper part of the main drilling module (1) is provided with the upper vertical slide frame (3), the inner side of the lower ring frame (2) is provided with a central ring (201) rotating in a circular direction, the top of the central ring (201) is provided with an upper air guide plate (202) in a ring array, the bottom of the central ring (201) is provided with a lower brush plate (203) in a ring array, and the side of the lower ring frame (2) is connected with a side connecting hose (204).

2. The drilling device for circuit board processing according to claim 1, characterized in that, The upper part of the main drilling module (1) is slidably connected to an upper telescopic frame (101), and the lower outer side of the main drilling module (1) is slidably connected to an upper sealing ring (102). Both sides of the upper sealing ring (102) are fixedly connected to side connecting slide columns (103).

3. The drilling device for circuit board processing according to claim 2, characterized in that, The upper sealing ring (102) is vertically slidably connected to the side connecting slide (103) and the main drilling module (1), and a side support spring (104) is provided between the lower ring frame (2) and the main drilling module (1).

4. The drilling device for circuit board processing according to claim 1, characterized in that, The transfer ring (201) is located in the middle of the connecting hole between the lower ring frame (2) and the side connecting hose (204), and the bottom bristles of the lower brush plate (203) are flush with the bottom of the lower ring frame (2).

5. A drilling device for circuit board processing according to claim 3, characterized in that, Both sides of the lower ring frame (2) are fixedly connected with side connecting slides (103). The side connecting slides (103) of the lower ring frame (2) and the main drilling module (1) are vertically slidably connected. A side support spring (104) is provided between the lower ring frame (2) and the main drilling module (1).

6. A drilling device for circuit board processing according to claim 3, characterized in that, The upper sealing ring (102) is located vertically above the lower ring frame (2). The side support spring (104) supports the lower ring frame (2) to move downward. The lower ring frame (2) and the upper sealing ring (102) are in a spaced-out state. When the lower ring frame (2) moves upward, the lower ring frame (2) and the upper sealing ring (102) are in a sealed state.

7. A drilling device for circuit board processing according to claim 3, characterized in that, The upper vertical slide frame (3) is slidably connected to the upper horizontal slide frame (301). The upper horizontal slide frame (301) is fixed on the top of the lower base (302). The middle shaft of the lower base (302) is engaged with the middle conveyor belt (303). The upper vertical slide frame (3) and the upper telescopic frame (101) are vertically slidably connected.

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