PCB drilling equipment integrated with automatic cleaning function

Abstract

The utility model discloses a kind of PCB drilling equipment of integrated automatic cleaning function, including rack, main control system being arranged on rack, drill bit and bearing table, further including integrated cleaning mechanism, the integrated cleaning mechanism includes dust suction subassembly, annular cleaning subassembly and dust collection box.The dust suction subassembly is fixed below bearing table, the annular cleaning subassembly coaxial sleeve is set in the drill bit outside of drill bit, the annular cleaning subassembly includes mounting seat and the annular air jet ring being set around mounting seat, the dust collection box is connected the outlet end of dust suction subassembly by detachable pipeline.Cleaning efficiency and effect significantly improve, substantially improve drilling accuracy and product yield rate.High degree of automation, reduce labor cost, without manual intervention throughout, prolong equipment continuous operation time, speed up production rhythm.Equipment maintenance is convenient and life is extended, integrated is also saved equipment occupied space, improve workshop layout flexibility.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing equipment technology, specifically a PCB drilling device with integrated automatic cleaning function. Background Technology

[0002] In PCB manufacturing, drilling is a crucial step in ensuring product precision. Copper shavings and resin debris generated during drilling, if not removed promptly, can adhere to the drill bit surface or accumulate around the holes on the PCB, leading to accelerated drill bit wear, hole misalignment, and rough hole walls, severely impacting product yield. Existing PCB drilling equipment typically uses independently installed air jet or negative pressure chip suction devices, which suffer from poor coordination and incomplete cleaning: the air jet direction doesn't match the drill bit's rotation trajectory, causing debris to easily spread; misalignment of the chip suction component with the drilling area necessitates regular manual cleaning of residual debris, frequently interrupting production and reducing efficiency. Furthermore, the lack of real-time monitoring of debris accumulation can easily lead to secondary contamination or equipment malfunctions due to excessive buildup, increasing labor and maintenance costs. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a PCB drilling device with integrated automatic cleaning function, which can effectively solve the problems mentioned in the background technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A PCB drilling device with integrated automatic cleaning function includes a frame, a main control system mounted on the frame, a drill bit and a support platform, and an integrated cleaning mechanism, which includes a dust suction component, a ring-shaped cleaning component and a dust collection box.

[0006] The dust collection assembly is fixed below the support platform, and the annular cleaning assembly is coaxially sleeved on the outside of the drill bit. The annular cleaning assembly includes a mounting base and an annular air jet ring arranged around the mounting base. The dust collection box is connected to the outlet end of the dust collection assembly through a detachable pipeline.

[0007] The annular cleaning assembly is mounted on the drive spindle of the drill bit via a floating bracket. The floating bracket is equipped with a detection sensor that is electrically connected to the main control system. The main control system controls the timing of gas injection between the drill bit and the annular jet ring.

[0008] As a further description of the above technical solution, the bottom extension end of the mounting base is provided with a flexible sealing skirt, the inner diameter of which is larger than the diameter of the mounting base.

[0009] As a further description of the above technical solution, the air jet hole of the annular air jet ring is inclined downward at 30°-45° towards the drill bit tip, and the air jet direction is tangential to the drill bit rotation direction. The air jet ring is connected to a compressed air source through a solenoid valve, and the opening and closing of the solenoid valve is controlled by the main control system according to the drilling depth signal.

[0010] As a further description of the above technical solution, the dust collection assembly includes a base box, a vacuum cleaner, and a high-frequency vibrating plate. The high-frequency vibrating plate is inclinedly disposed at the discharge port of the vacuum cleaner, and the base box is connected to the vacuum cleaner.

[0011] As a further description of the above technical solution, a concentrating trough is provided on one side of the bottom box, and a chip guide plate is also provided inside the bottom box that is inclined towards the concentrating trough. The concentrating trough is provided with a chip conveying pipe, and the chip conveying pipe is connected to a vacuum cleaner.

[0012] As a further description of the above technical solution, it also includes two sets of infrared detection components for real-time monitoring of the height of debris accumulation around the drill bit, the infrared detection components being symmetrically arranged on both sides of the support platform.

[0013] As a further description of the above technical solution, the infrared detection component includes a linear array infrared emitter that emits a fan-shaped detection beam covering the drilling area and a photoelectric sensor array that receives reflected light signals and generates a three-dimensional debris distribution map.

[0014] As a further description of the above technical solution, one end of the debris conveying pipeline is provided with a water supply system for cleaning the inside of the debris conveying pipeline, the water supply system including a control valve and a conveying pipe connected to the debris conveying pipeline.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model discloses a PCB drilling device with integrated automatic cleaning function, which has at least one of the following beneficial effects during use:

[0017] Significantly improved cleaning efficiency and effectiveness: The 30°-45° inclined tangential air jet ring, combined with the dust collection component below the support platform, forms an "upward blowing and downward suction" synergy. This, along with the local sealing effect of the flexible sealing skirt, efficiently removes drill bit and PCB board debris, reducing hole displacement and rough hole walls caused by residue, and significantly improving drilling accuracy and product yield. High degree of automation, reducing labor costs: The main control system uses sensors to control the drilling and air jet sequence. The infrared detection component generates a real-time 3D debris distribution map and automatically adjusts cleaning parameters when thresholds are exceeded. The water supply system automatically clears blocked pipes, and the dust collection box is removable and replaceable. No manual intervention is required throughout the process, extending continuous equipment operation time and accelerating production cycle. Convenient equipment maintenance and extended lifespan; the integrated design also saves space and improves workshop layout flexibility. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a PCB drilling device with integrated automatic cleaning function according to this utility model;

[0019] Figure 2 This is a side view of a PCB drilling device with integrated automatic cleaning function according to the present invention.

[0020] Figure 3 This is a top view of a PCB drilling device with integrated automatic cleaning function according to this utility model.

[0021] Figure 4 This is a schematic diagram of the annular cleaning component structure of a PCB drilling device with integrated automatic cleaning function according to this utility model.

[0022] Numbering on the map:

[0023] 1. Frame; 101. Main control system; 102. Support platform; 103. Drill bit; 104. Floating support; 105. Drive spindle; 106. Infrared detection component; 107. Water supply system; 108. Control valve; 2. Integrated cleaning mechanism; 201. Annular cleaning component; 202. Debris suction component; 203. Base box; 204. Centralized tank; 205. Dust collection box; 206. Vacuum cleaner; 207. Debris conveying pipe; 208. Solenoid valve; 209. Annular air jet ring; 210. Flexible sealing skirt; 211. Mounting base. Detailed Implementation

[0024] 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.

[0025] like Figure 1-4 As shown, this utility model provides a PCB drilling device with integrated automatic cleaning function, including a frame 1, a main control system 101, a drill bit 103 and a support platform 102 mounted on the frame 1, and an integrated cleaning mechanism 2, which includes a dust suction component 202, a ring cleaning component 201 and a dust collection box 205.

[0026] The dust collection assembly 202 is fixed below the support platform 102. The annular cleaning assembly 201 is coaxially sleeved on the outside of the drill bit 103. The annular cleaning assembly 201 includes a mounting base 211 and an annular air jet ring 209 arranged around the mounting base 211. The dust collection box 205 is connected to the outlet end of the dust collection assembly 202 through a detachable pipe.

[0027] An annular air jet ring 209 is coaxially fitted around the outside of the drill bit 103. The air jet holes are angled downwards at 30°-45° towards the tip of the drill bit 103, and the air jet direction is tangential to the rotation direction of the drill bit 103. This design allows the airflow to "envelop" and blow away debris along the rotation trajectory of the drill bit 103, preventing debris from adhering to the drill bit 103 or the PCB board surface. The debris suction assembly 202 is fixed below the support platform 102, forming a "blowing from above and sucking from below" synergistic effect with the annular air jet ring 209: the debris blown up by the air jet ring is directly sucked into the negative pressure vacuum cleaner 206 below. The annular cleaning assembly 201 is coaxially fitted around the drill bit 103, and the debris suction assembly 202 is integrated below the support platform 102. All cleaning components are integrated with the drilling body.

[0028] The annular cleaning component 201 is mounted on the drive spindle 105 of the drill bit 103 via a floating bracket 104. The floating bracket 104 is equipped with a detection sensor that is electrically connected to the main control system 101. The main control system 101 controls the timing of gas injection between the drill bit 103 and the annular jet ring 209.

[0029] The air jet ring is connected to a compressed air source via a solenoid valve 208. The main control system 101 controls the opening and closing of the solenoid valve 208 based on the drilling depth signal (e.g., air jetting during drilling and pausing during tool retraction), ensuring chip removal while avoiding air waste. The annular cleaning component 201 is mounted on the drill bit 103 drive spindle 105 via a floating bracket 104. The detection sensor on the bracket is electrically connected to the main control system 101, enabling real-time sensing of the drill bit 103's position (e.g., drilling depth, feed rate).

[0030] The main control system 101 synchronously controls the rotation speed and feed action of the drill bit 103 and the spray timing of the annular air jet ring 209 based on the sensor signals, to ensure that the cleaning action and the drilling action are perfectly matched (e.g., the air jet starts when the drill bit 103 contacts the PCB, and the air jet is delayed and shut off after drilling is completed, so as to thoroughly remove residual debris).

[0031] Furthermore, the bottom extension end of the mounting base 211 is provided with a flexible sealing skirt 210, the inner diameter of which is larger than the diameter of the mounting base 211.

[0032] The flexible sealing skirt 210 at the bottom of the mounting base 211 (with an inner diameter larger than the mounting base 211) will be close to the PCB board surface during drilling, forming a local sealing space, reducing airflow leakage, and making the air jet more concentrated.

[0033] Furthermore, the air jet holes of the annular air jet ring 209 are inclined downwards at 30°-45° towards the tip of the drill bit 103, and the air jet direction is tangential to the rotation direction of the drill bit 103. The air jet ring is connected to a compressed air source through a solenoid valve 208, and the opening and closing of the solenoid valve 208 is controlled by the main control system 101 according to the drilling depth signal.

[0034] The combined use of annular jetting and negative pressure chip suction, along with a sealing skirt, reduces chip residue. Infrared detection provides real-time early warning of chip buildup, preventing chips from affecting the drilling path. This reduces hole position accuracy errors in PCB board drilling, improves hole wall smoothness, and decreases the defect rate.

[0035] Furthermore, the dust collection assembly 202 includes a base box 203, a vacuum cleaner 206, and a high-frequency vibrating plate. The high-frequency vibrating plate is inclinedly disposed at the discharge port of the vacuum cleaner 206, and the base box 203 is connected to the vacuum cleaner 206.

[0036] The vacuum cleaner 206 is connected to the dust collection box 205. The dust collection box 205 is connected to the outlet of the dust collection component 202 through a detachable pipe. When the box is full, it can be directly removed and replaced without stopping the machine to disassemble the equipment, thus improving maintenance efficiency.

[0037] Furthermore, a concentrating trough 204 is provided on one side of the bottom box 203, and a chip guide plate is also provided inside the bottom box 203 and inclined to the concentrating trough 204. The concentrating trough 204 is provided with a chip conveying pipe 207, which is connected to the vacuum cleaner 206.

[0038] The chip guide plate inside the bottom box 203 is tilted towards the collection trough 204 on one side, which can guide the chips to automatically gather in the collection trough 204, and then collect them in the dust collection box 205 through the chip conveying pipe 207, realizing the "non-accumulation" conveying of chips. One end of the chip conveying pipe 207 is connected to the water supply system 107 (including the control valve 108 and the conveying pipe). When the pipe is blocked by chips, the control valve 108 can be opened to flush the inner wall of the pipe with water, avoiding manual disassembly and cleaning.

[0039] Furthermore, it also includes two sets of infrared detection components 106 for real-time monitoring of the height of debris accumulation around the drill bit 103. The infrared detection components 106 are symmetrically arranged on both sides of the support platform 102.

[0040] Furthermore, the infrared detection component 106 includes a linear infrared emitter that emits a fan-shaped detection beam covering the drilling area and a photoelectric sensor array that receives reflected light signals and generates a three-dimensional debris distribution map.

[0041] Infrared detection components 106 are symmetrically arranged on both sides of the support platform 102. The linear infrared emitter emits a fan-shaped detection beam that covers the entire drilling area; the photoelectric sensor array receives the reflected light signal and generates a "three-dimensional chip distribution map".

[0042] When the height of debris accumulation around the drill bit 103 exceeds the threshold, the main control system 101 will trigger an alarm (such as increasing the power of the vacuum cleaner 206 or extending the air jet time) to prevent debris accumulation from affecting drilling accuracy or scratching the PCB board.

[0043] Furthermore, one end of the debris conveying pipe 207 is provided with a water supply system 107 for cleaning the inside of the debris conveying pipe 207. The water supply system 107 includes a control valve 108 and a conveying pipe that connects to the debris conveying pipe 207.

[0044] The main control system features 101-linkage control of the cleaning sequence, automatic infrared detection for early warning, and automatic water system unblocking, all without the need for manual intervention. This extends the equipment's continuous operating time, accelerates production cycle time (e.g., shortens the processing time for each PCB board), and reduces labor costs.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PCB drilling device with integrated automatic cleaning function, comprising a frame, a main control system mounted on the frame, a drill bit, and a support platform, characterized in that: It also includes an integrated cleaning mechanism, which includes a dust suction component, a ring-shaped cleaning component, and a dust collection box; The dust collection assembly is fixed below the support platform, and the annular cleaning assembly is coaxially sleeved on the outside of the drill bit. The annular cleaning assembly includes a mounting base and an annular air jet ring arranged around the mounting base. The dust collection box is connected to the outlet end of the dust collection assembly through a detachable pipeline. The annular cleaning assembly is mounted on the drive spindle of the drill bit via a floating bracket. The floating bracket is equipped with a detection sensor that is electrically connected to the main control system. The main control system controls the timing of gas injection between the drill bit and the annular jet ring.

2. The PCB drilling equipment with integrated automatic cleaning function according to claim 1, characterized in that: The bottom extension of the mounting base is provided with a flexible sealing skirt, the inner diameter of which is larger than the diameter of the mounting base.

3. The PCB drilling equipment with integrated automatic cleaning function according to claim 1, characterized in that: The air jets of the annular air jet ring are inclined downwards at 30°-45° towards the drill bit tip, and the air jet direction is tangential to the drill bit rotation direction. The air jet ring is connected to a compressed air source through a solenoid valve, and the opening and closing of the solenoid valve is controlled by the main control system according to the drilling depth signal.

4. The PCB drilling equipment with integrated automatic cleaning function according to claim 1, characterized in that: The dust collection assembly includes a base box, a vacuum cleaner, and a high-frequency vibrating plate. The high-frequency vibrating plate is inclinedly disposed at the discharge port of the vacuum cleaner, and the base box is connected to the vacuum cleaner.

5. A PCB drilling device with integrated automatic cleaning function according to claim 4, characterized in that: The bottom box has a collection trough on one side, and a chip guide plate is provided inside the bottom box that is inclined to the collection trough. The collection trough is provided with a chip conveying pipe, and the chip conveying pipe is connected to a vacuum cleaner.

6. The PCB drilling equipment with integrated automatic cleaning function according to claim 1, characterized in that: It also includes two sets of infrared detection components for real-time monitoring of the height of debris accumulation around the drill bit, the infrared detection components being symmetrically arranged on both sides of the support platform.

7. A PCB drilling device with integrated automatic cleaning function according to claim 6, characterized in that: The infrared detection component includes a linear infrared emitter that emits a fan-shaped detection beam covering the drilling area and a photoelectric sensor array that receives reflected light signals and generates a three-dimensional debris distribution map.

8. A PCB drilling device with integrated automatic cleaning function according to claim 5, characterized in that: One end of the debris conveying pipeline is provided with a water supply system for cleaning the inside of the debris conveying pipeline. The water supply system includes a control valve and a conveying pipe connected to the debris conveying pipeline.

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