A drilling device for processing a circuit board

Abstract

The utility model relates to the field of drilling processing, concretely relates to a drilling device for circuit board processing, the utility model discloses a fixed platform, is equipped with clamp on the fixed platform, and clamp is used for fixing circuit board, is equipped with drilling machine on the fixed platform, is equipped with suction on the fixed platform, and the suction is located at the bottom of clamp, is equipped with processing cavity in the fixed platform, and processing cavity communicates with the suction, is equipped with negative pressure suction ware in the processing box, and negative pressure suction ware divides processing cavity into action cavity and cooling cavity, and action cavity is located at the one side of negative pressure suction ware close to suction, and the suction port of negative pressure suction ware faces the suction, is equipped with cooling liquid in the cooling cavity, and the top of cooling cavity is equipped with back gas port, and the gas outlet of negative pressure suction ware is connected with extension pipe, and extension pipe extends to cooling liquid, is equipped with release in action cavity, and release communicates with back gas port, and is equipped with pressure -relief valve at release, adopt the technical scheme of the utility model, is used for through the circulation of airflow, and drilling machine can be cooled by the action of cooling gas after completing the punching.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and more specifically, to a drilling device for circuit board processing. Background Technology

[0002] Circuit boards are also known as printed circuit boards (PCBs), aluminum-based boards, high-frequency boards, impedance boards, etc. Circuit boards miniaturize and visualize circuits, playing a crucial role in the mass production of fixed circuits and optimizing the layout of electrical appliances. Drilling holes in circuit boards is a vital and versatile step in PCB design and manufacturing.

[0003] In existing technologies, the functions of drilling can be categorized into achieving electrical connections, providing mechanical support, and assisting in heat dissipation. Among these, the holes used to provide mechanical support have a larger drilling area, requiring space for screw installation. The inner walls are not electroplated and do not connect to any circuits, and sufficient space is left around them to prevent short circuits.

[0004] Patent publication number CN118973102A discloses a circuit board drilling device and drilling method, which collects debris during the drilling process by using negative pressure suction. However, in addition to generating debris, the drill bit will gradually heat up as the number of drilling operations increases, requiring cooling treatment for the drill bit. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a drilling device for circuit board processing, which uses airflow circulation to cool the drilling machine after drilling by the action of cooling gas.

[0006] This utility model is achieved through the following technical solution: a drilling device for circuit board processing, including a fixed table, a clamp on the fixed table for fixing the circuit board, a drilling machine on the fixed table, a suction port on the fixed table located at the bottom of the clamp, and a processing chamber inside the fixed table, which is connected to the suction port. The processing chamber is equipped with a negative pressure suction device, which divides the processing chamber into an action chamber and a cooling chamber. The action chamber is located on the side of the negative pressure suction device closer to the suction port, and the suction port of the negative pressure suction device faces the suction port. The cooling chamber contains coolant, and a return air port is opened at the top of the cooling chamber. The air outlet of the negative pressure absorber is connected to an extension pipe, which extends into the coolant. The working chamber is equipped with a release port, which is connected to the return air port, and a pressure relief valve is installed at the release port.

[0007] Furthermore, a ring-shaped washer is fixedly connected to the suction port.

[0008] Furthermore, the release port is connected to the return port through a gas storage component, which is an elastic bladder.

[0009] Furthermore, a circulation machine is connected to the bottom of the cooling chamber via a pipeline, and a cooler is installed on the pipeline. The circulation machine is used to circulate the coolant in the cooling chamber.

[0010] Furthermore, a filter is installed on the pipeline to remove debris from the coolant.

[0011] Furthermore, the filter includes a roller, a drive unit, and a scraper. The drive unit is used to drive the roller to rotate, and the scraper includes a scraper blade and a collection trough. The scraper blade is used to scrape off debris from the roller, and the collection trough is used to collect the debris scraped off by the scraper blade.

[0012] Furthermore, the outer casing of the processing box is equipped with an insulation layer.

[0013] The technical solution of this utility model has at least the following beneficial effects: When drilling, the circuit board is placed on the fixture, and the suction port provides suction under the action of the negative pressure suction device, firmly holding the circuit board in place. The drilling machine can then drill holes in the circuit board, leaving holes in it.

[0014] When the suction port tightly grips the circuit board, it becomes blocked, creating negative pressure in the working chamber under the action of the negative pressure suction device. When the negative pressure in the working chamber is high enough, the pressure relief valve opens, introducing cold gas into the chamber and lowering its temperature. The drill bit from the subsequent drilling machine then drills through the hole and enters the working chamber, coming into contact with the cold gas and being cooled. Simultaneously, the negative pressure suction device continues to suction, effectively removing debris near the hole.

[0015] The gas and debris drawn in by the negative pressure suction device are sent into the extension tube, where they are released into the coolant. Once released into the coolant, the gas undergoes thorough heat exchange, resulting in significant cooling. The cooled gas then exits through the return port and release port, with the suction port sealed, into the working chamber. Meanwhile, the debris, released into the coolant, is transferred from the gas into the coolant based on the wet dust collection principle, thus confining the debris and preventing it from being carried away. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of an embodiment of the drilling device for circuit board processing of this utility model; Figure 2 This is a cross-sectional view of an embodiment of the drilling device for circuit board processing according to the present invention; Figure 3 This is a cross-sectional view of the drilling machine after it has been lowered, according to an embodiment of the drilling device for circuit board processing of this utility model. Figure 4 This is a schematic diagram of a filter in an embodiment of the drilling device for circuit board processing according to this utility model.

[0017] Reference numerals: 1. Fixed platform; 2. Fixture; 3. Drilling machine; 4. Suction port; 5. Processing chamber; 6. Negative pressure suction device; 7. Coolant; 8. Air return port; 9. Extension pipe; 10. Release port; 11. Pressure relief valve; 12. Annular washer; 13. Elastic bladder; 14. Circulator; 15. Cooler; 16. Filter; 17. Insulation layer; 501. Working chamber; 502. Cooling chamber; 1601. Roller; 1602. Scraper; 1603. Collection tank. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following detailed description illustrates the specific implementation method: Example 1 As attached Figures 1-4 As shown, a drilling device for circuit board processing includes a fixed table 1, a clamp 2 on the fixed table 1, the clamp 2 being a conventional circuit board clamp 2, the clamp 2 being used to fix the circuit board, a drilling machine 3 on the fixed table 1, the drilling machine 3 being used to drill holes, a suction port 4 on the fixed table 1, the suction port 4 being located at the bottom of the clamp 2, an annular washer 12 being fixedly connected to the suction port 4, and a processing chamber 5 inside the fixed table 1, the processing chamber 5 being connected to the suction port 4.

[0022] The processing chamber is equipped with a negative pressure suction device 6, which divides the processing chamber 5 into an action chamber 501 and a cooling chamber 502. The action chamber 501 is located on the side of the negative pressure suction device 6 near the suction port 4, and the suction port of the negative pressure suction device 6 faces the suction port 4.

[0023] Coolant 7 is provided in the cooling chamber 502. A return air port 8 is provided at the top of the cooling chamber 502. An extension pipe 9 is connected to the outlet of the negative pressure absorber 6. The extension pipe 9 extends into the coolant 7.

[0024] The working chamber 501 is provided with a release port 10, which is connected to the return port 8 through a gas storage component. The gas storage component is an elastic bladder 13, and a pressure relief valve 11 is provided at the release port 10.

[0025] When drilling, the circuit board is placed on the clamp 2. The suction port 4 provides suction under the action of the negative pressure suction device 6, tightly holding the circuit board. The annular washer 12 at the suction port 4 can effectively improve the fit between the circuit board and the suction port 4, improving airtightness. The drilling machine 3 can drill holes in the circuit board. The drilling machine 3 is aligned with the area to be drilled on the circuit board, and the drill bit of the drilling machine 3 leaves a hole in the circuit board.

[0026] When suction port 4 is tightly gripped by the circuit board, it will be blocked by the circuit board, causing negative pressure to be generated in the working chamber 501 under the action of the negative pressure absorber 6. The function of pressure relief valve 11 is to open when the pressure difference on both sides reaches a certain value. When the negative pressure in the working chamber 501 is high enough, pressure relief valve 11 will be triggered and open, thereby inputting cold gas into the working chamber 501. The input cold gas will be continuously sucked away by the negative pressure absorber 6 and circulated, thus reducing the temperature of the working chamber 501. By setting an appropriate threshold for pressure relief valve 11 or by additionally setting a pressure relief port in the cooling chamber 502 to control the maximum value of the gas pressure, suction force can still be maintained at suction port 4 during the cooling process.

[0027] Subsequently, the drill bit of drilling machine 3 will drill through the hole and penetrate into the working chamber 501, where it will come into contact with the cold gas and be cooled. Furthermore, since the working chamber 501 is connected to the outside through the hole, the negative pressure in the working chamber 501 will decrease, reducing the pressure difference, and the pressure relief valve 11 will close after the negative pressure drops. Simultaneously, the negative pressure suction device 6 continues to suction, effectively removing debris near the hole. Compared to directly using air cooling and liquid cooling on the drill bit, this process avoids impact on the area around the drill bit, preventing debris from flying everywhere.

[0028] The gas and debris sucked up by the negative pressure extractor 6 are sent to the extension tube 9, where they are released into the coolant 7. Once released into the coolant 7, the gas undergoes thorough heat exchange, resulting in significant cooling. The cooled gas is then released into the working chamber 501 through the return port 8 and the release port 10, after the suction port 4 is sealed. The elastic bladder 13 acts as an intermediate component, temporarily storing the gas. Debris released into the coolant 7, based on the wet dust collection principle, is transferred from the gas into the coolant 7, thus confining the debris and preventing it from being carried away. Large debris is less prone to drifting; users can install a filter at the suction port of the negative pressure extractor 6. Large debris will be directly intercepted and collected by the filter, while smaller particles are transferred through wet dust collection to prevent them from drifting into the air and affecting the health of operators.

[0029] Example 2 The difference from the above embodiment is that the bottom of the cooling chamber 502 is connected to a circulating machine 14 via a pipeline. The circulating machine 14 is a water pump, and a cooler 15 is provided on the pipeline. The circulating machine 14 is used to circulate the coolant 7 in the cooling chamber 502. A filter 16 is provided on the pipeline to filter out debris from the coolant 7. The filter 16 includes a roller 1601, a drive unit, and a scraper. The drive unit is used to drive the roller 1601 to rotate, and the scraper includes a scraper 1602 and a collection tank 1603. The scraper 1602 is used to scrape off debris from the roller 1601, and the collection tank 1603 is used to collect the debris scraped off by the scraper 1602.

[0030] The outer casing of the processing chamber is equipped with an insulation layer 17, which can reduce heat radiation and thus reduce heat exchange between the processing chamber and the outside environment.

[0031] The coolant 7 serves both cooling and debris collection functions, thus allowing for further optimization of both. The circulator 14 draws out the coolant 7 for circulation, and during this circulation, the cooler 15 cools the coolant 7 to maintain its temperature. The filter 16 further captures and collects debris from the coolant 7.

[0032] The filter 16 rotates via the roller 1601, causing the roller 1601 to be covered with debris and rotated to the scraper 1602. The scraper 1602 then scrapes off the debris from the roller 1601, and the scraped debris falls into the collection tank 1603. Users can periodically remove and recycle the debris from the collection tank 1603.

[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A drilling device for circuit board processing, characterized in that, Includes a fixed platform (1), a clamp (2) is provided on the fixed platform (1) for fixing the circuit board, a drilling machine (3) is provided on the fixed platform (1), a suction port (4) is opened on the fixed platform (1) and the suction port (4) is located at the bottom of the clamp (2), and a processing chamber (5) is provided inside the fixed platform (1) and the processing chamber (5) is connected to the suction port (4). The processing chamber is equipped with a negative pressure suction device (6), which divides the processing chamber (5) into a working chamber (501) and a cooling chamber (502). The working chamber (501) is located on the side of the negative pressure suction device (6) near the suction port (4), and the suction port of the negative pressure suction device (6) faces the suction port (4). Cooling chamber (502) is filled with coolant (7), and a return air port (8) is opened at the top of cooling chamber (502). The outlet of negative pressure suction device (6) is connected to an extension pipe (9), which extends into the coolant (7). The working chamber (501) is provided with a release port (10), which is connected to the return air port (8). A pressure relief valve (11) is provided at the release port (10).

2. The drilling apparatus for circuit board processing according to claim 1, characterized in that, A ring washer (12) is fixedly connected at the suction port (4).

3. The drilling apparatus for circuit board processing according to claim 1, characterized in that, The release port (10) is connected to the return port (8) through the gas storage component, which is an elastic bladder (13).

4. The drilling apparatus for circuit board processing according to claim 1, characterized in that, The bottom of the cooling chamber (502) is connected to a circulation machine (14) through a pipeline, and a cooler (15) is provided on the pipeline. The circulation machine (14) is used to circulate the coolant (7) in the cooling chamber (502).

5. The drilling apparatus for circuit board processing according to claim 4, characterized in that, A filter (16) is provided on the pipeline to filter out debris from the coolant (7).

6. The drilling apparatus for circuit board processing according to claim 5, characterized in that, The filter (16) includes a roller (1601), a drive unit and a scraper. The drive unit is used to drive the roller (1601) to rotate. The scraper includes a scraper (1602) and a collection trough (1603). The scraper (1602) is used to scrape off the debris on the roller (1601), and the collection trough (1603) is used to collect the debris scraped off by the scraper (1602).

7. The drilling apparatus for circuit board processing according to claim 6, characterized in that, The outer casing of the processing box is equipped with an insulation layer (17).

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