Drilling device for single-sided PCB (printed circuit board)

Abstract

The utility model belongs to the technical field of circuit board drilling devices, and relates to a drilling device for a single-sided PCB (printed circuit board), which comprises a motor frame, a connecting frame is fixedly connected to the lower end of the motor frame, a protective cover is fixedly connected to the lower end of the connecting frame, and a plurality of groups of dust collection holes are formed in one end, close to the connecting frame, of the protective cover in an annular array manner. A diversion groove is formed in the end, close to the protective cover, of the connecting frame, multiple sets of air inlet holes are formed in the inner side of the extrusion ring, an extrusion assembly is arranged between the air inlet holes and the protective cover, and a drilling assembly is arranged on the inner side of the motor frame. Scraps and dust generated in the drilling process are rapidly extracted from a sealing area and discharged through a channel formed by the dust suction holes, the protective cover, the diversion groove and the exhaust pipe, so that the influence of scrap accumulation on the protective cover is remarkably reduced, meanwhile, a scrap splashing path is effectively blocked through a sealing structure of the protective cover, and the service life of the protective cover is prolonged. And the injury to operators caused by high-speed splashing chippings is fundamentally avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit board drilling devices, and relates to a drilling device for single-sided PCB circuit boards. Background Technology

[0002] A single-sided PCB is a printed circuit board with copper plating on only one side of an insulating substrate (such as FR-4) and conductive paths formed by etching. It has a simple structure, low cost, and is suitable for low-complexity circuit designs. It achieves single-sided through-hole or surface-mount mounting of components through drilling and pads, and is widely used in electronic devices with low wiring density requirements, such as home appliance control boards, power modules, and relay switches. Due to its simple manufacturing process and short production cycle, it has become a fundamental component in consumer electronics and industrial control fields.

[0003] For example, patent (CN222200892U) discloses a circuit board drilling device, which describes that it "includes: a main body, the top of the main body is symmetrically provided with sliding grooves, and a movable seat is slidably connected inside the sliding grooves; the left and right sides of the top of the main body are respectively provided with movable grooves, and sliding holes are respectively provided in the movable grooves. Through the threaded connection between the threaded column and the threaded hole of the motor shaft of the motor, the threaded column is rotated to fix different types of drill bits, then the motor is started to drive the drill bit to rotate, then the circuit board is placed on the inclined surface of the adjusting block, and then pressed down so that the fixing hook and the fixing block hook each other, fixing the position of the adjusting block, and clamping the front and rear sides of the circuit board, making it convenient for the staff to fix the circuit board onto the device, solving the problem that the drilling position of some circuit boards is not fixed during maintenance, which is inconvenient for the staff to fix.

[0004] When using the above technology, the following technical problems were found in the prior art: When the above device drills holes in the circuit board, debris and dust will be generated at the drilling position. If these debris and dust are not cleaned in time, they may affect the accuracy of subsequent drilling, resulting in hole position deviation or hole diameter not meeting the standard. At the same time, it may also aggravate tool wear and reduce processing efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is that when the above-mentioned device drills holes in the circuit board, debris and dust will be generated at the drilling position. If these debris and dust are not cleaned in time, they may affect the accuracy of subsequent drilling, resulting in hole position deviation or hole diameter not meeting the standard. At the same time, they may also aggravate tool wear and reduce processing efficiency.

[0006] The present invention discloses a drilling device for a single-sided PCB, comprising a motor frame, a connecting frame fixedly connected to the lower end of the motor frame, a protective cover fixedly connected to the lower end of the connecting frame, a plurality of dust suction holes arranged in a circular array at one end of the protective cover near the connecting frame, a flow divider groove provided at one end of the connecting frame near the protective cover, the dust suction holes and the flow divider groove communicating with each other, a compression ring provided at the lower end of the protective cover, a plurality of air inlets provided on the inner side of the compression ring, a compression assembly provided between the air inlets and the protective cover, and a drilling assembly provided on the inner side of the motor frame.

[0007] The extrusion assembly includes a limiting rod. Multiple sets of limiting rods are slidably connected to the inner side of the protective cover. The lower end of the limiting rod is fixedly connected to the extrusion ring. A spring is provided on the outer side of the limiting rod. The upper and lower ends of the spring are fixedly connected to the extrusion ring and the protective cover, respectively. A limiting post is installed on the upper end of the limiting rod, located on the outer side of the protective cover. A sealing structure is also provided between the protective cover and the extrusion ring.

[0008] The drilling assembly includes a servo motor, which is mounted on the inner side of the motor frame. A connecting rod is fixedly connected to the output end of the servo motor. The connecting rod is rotatably connected to the connecting frame and the protective cover. A drilling head assembly is mounted on the end of the connecting rod away from the servo motor.

[0009] An air extraction pipe is installed on the inner side of the connecting frame, and the air extraction pipe is interconnected with the interior of the connecting frame.

[0010] The sealing structure includes a first folding sleeve, and a first folding sleeve and a second folding sleeve are installed between the protective cover and the compression ring.

[0011] A silicone pad is installed at the lower end of the compression ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the downward pressing component drives the motor frame to move longitudinally, driving the drilling component to drill holes in the circuit board at different depths. At the same time, the movement of the motor frame creates a dynamic sealing structure between the pressing component and the circuit board, effectively sealing the drilling area. The dust collector then uses negative pressure suction to quickly remove the debris and dust generated during the drilling process from the sealed area and discharge them through the channel composed of the dust suction hole, protective cover, diversion groove and air extraction pipe. This significantly reduces the impact of debris accumulation on the protective cover. Meanwhile, the sealing structure of the protective cover effectively blocks the debris splash path, fundamentally preventing high-speed flying debris from causing injury to the operator.

[0013] The downward pressing component drives the drilling component to move downward so as to open holes of different depths on the circuit board. At the same time, the extrusion component continuously extrudes the circuit board to prevent it from moving, thereby improving the accuracy of drilling. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural schematic diagram of the motor frame of this utility model.

[0017] Figure 3 This is a schematic diagram of the extrusion assembly of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the diversion channel and the dust suction hole of this utility model.

[0019] In the diagram: 101, motor frame; 102, connecting frame; 103, protective cover; 104, dust suction hole; 105, diversion groove; 106, extrusion ring; 107, air inlet; 201, limit rod; 202, spring; 203, limit post; 301, servo motor; 302, connecting rod; 303, drill head assembly; 401, air extraction pipe; 501, first folding sleeve; 502, second folding sleeve; 601, silicone pad. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example

[0024] like Figure 1 - Figure 4As shown, a drilling device for a single-sided PCB includes a motor frame 101, which is mounted on the lower end of a drilling machine's pressing assembly. A connecting frame 102 is fixedly connected to the lower end of the motor frame 101, and a protective cover 103 is fixedly connected to the lower end of the connecting frame 102. The protective cover 103 has multiple sets of dust suction holes 104 arranged in a circular array near the connecting frame 102. A diversion groove 105 is provided at the end of the connecting frame 102 near the protective cover 103. The dust suction holes 104 and the diversion groove 105 communicate with each other. A compression ring 106 is provided at the lower end of the protective cover 103. Multiple sets of air inlets 107 are provided on the inner side of the compression ring 106. A compression assembly is provided between the air inlets 107 and the protective cover 103. A drilling assembly is provided on the inner side of the motor frame 101.

[0025] The drilling assembly includes a servo motor 301. The servo motor 301 is installed on the inner side of the motor frame 101. A connecting rod 302 is fixedly connected to the output end of the servo motor 301. The connecting rod 302 is rotatably connected to the connecting frame 102 and the protective cover 103. A drilling head assembly 303 is installed at the end of the connecting rod 302 away from the servo motor 301.

[0026] An exhaust pipe 401 is installed on the inner side of the connecting frame 102. The exhaust pipe 401 is interconnected with the interior of the connecting frame 102, and the end of the exhaust pipe 401 away from the connecting frame 102 is installed on the dust collector.

[0027] During operation, the motor frame 101 is installed at the lower end of the drilling machine's pressing assembly, and the air extraction pipe 401 is connected to the dust collector. After the servo motor 301 is started, its output end drives the drilling head assembly 303 to rotate through the connecting rod 302. At the same time, the pressing assembly drives the entire mechanism to move longitudinally, so that the protective cover 103 pushes the extrusion ring 106 to press the circuit board through the extrusion assembly, achieving stable fixation during drilling. Subsequently, the pressing assembly continues to drive the drilling assembly to move down, and the drilling head assembly 303 drills the circuit board.

[0028] During the drilling process, the dust collector is started simultaneously. External airflow enters through the air inlet 107. Through the negative pressure of the dust collector, the generated dust and debris are sequentially drawn away through the suction hole 104, the protective cover 103, the diversion channel 105, and the extraction pipe 401, thereby effectively removing processing residues, improving drilling accuracy, reducing the impact of debris accumulation on the cutting tool and circuit board, improving processing efficiency and finished product quality. At the same time, the protective cover 103 effectively prevents debris from splashing during drilling and causing injury to workers, thereby improving work safety. Example

[0029] like Figure 1 - Figure 4As shown, the extrusion assembly includes a limiting rod 201. Multiple sets of limiting rods 201 are slidably connected to the inner side of the protective cover 103. The lower end of the limiting rod 201 is fixedly connected to the extrusion ring 106. A spring 202 is provided on the outer side of the limiting rod 201. The upper and lower ends of the spring 202 are fixedly connected to the extrusion ring 106 and the protective cover 103, respectively. A limiting post 203 is installed on the upper end of the limiting rod 201 and on the outer side of the protective cover 103. The limiting post 203 limits the stroke of the limiting rod 201. A sealing structure is also provided between the protective cover 103 and the extrusion ring 106.

[0030] The sealing structure includes a first folding sleeve 501. The first folding sleeve 501 and the second folding sleeve 502 are installed between the protective cover 103 and the compression ring 106, and the first folding sleeve 501 and the second folding sleeve 502 seal the space between the protective cover 103 and the air inlet 107.

[0031] A silicone pad 601 is installed at the lower end of the extrusion ring 106, which makes the extrusion ring 106 more stable when extruding the circuit board.

[0032] During operation, when the pressing component drives the motor frame 101 to move longitudinally, the motor frame 101 synchronously drives the protective cover 103 to move downward. The protective cover 103 pushes the air inlet 107 and the extrusion ring 106 to press the circuit board through the extrusion component, ensuring stable positioning in the initial stage of processing. As the motor frame 101 continues to press down, the drilling component begins to drill holes of different depths on the circuit board. At this time, the protective cover 103 synchronously extrudes the spring 202, causing it to undergo controllable deformation, thereby dynamically adjusting the distance between the air inlet 107 and the protective cover 103. The pressing component drives the drilling component to move downward so as to open holes of different depths on the circuit board. At the same time, the extrusion component continuously extrudes the circuit board, thereby preventing the circuit board from moving and improving the accuracy of drilling.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A drilling device for single-sided PCB circuit boards, characterized in that: The device includes a motor frame (101), a connecting frame (102) fixedly connected to the lower end of the motor frame (101), a protective cover (103) fixedly connected to the lower end of the connecting frame (102), a plurality of dust suction holes (104) are arranged in a circular array at one end of the protective cover (103) near the connecting frame (102), a diversion groove (105) is provided at one end of the connecting frame (102) near the protective cover (103), the dust suction holes (104) and the diversion groove (105) are interconnected, a compression ring (106) is provided at the lower end of the protective cover (103), a plurality of air inlets (107) are provided on the inner side of the compression ring (106), a compression assembly is provided between the air inlets (107) and the protective cover (103), and a drilling assembly is provided on the inner side of the motor frame (101).

2. The drilling device for a single-sided PCB according to claim 1, characterized in that: The extrusion assembly includes a limiting rod (201). Multiple sets of limiting rods (201) are slidably connected to the inner side of the protective cover (103). The lower end of the limiting rod (201) is fixedly connected to the extrusion ring (106). A spring (202) is provided on the outer side of the limiting rod (201). The upper and lower ends of the spring (202) are fixedly connected to the extrusion ring (106) and the protective cover (103) respectively. A limiting post (203) is installed on the upper end of the limiting rod (201) and on the outer side of the protective cover (103). A sealing structure is also provided between the protective cover (103) and the extrusion ring (106).

3. The drilling device for a single-sided PCB according to claim 1, characterized in that: The drilling assembly includes a servo motor (301), the servo motor (301) is mounted on the inner side of the motor frame (101), the output end of the servo motor (301) is fixedly connected to a connecting rod (302), the connecting rod (302) is rotatably connected to the connecting frame (102) and the protective cover (103), and a drill head assembly (303) is mounted on the end of the connecting rod (302) away from the servo motor (301).

4. The drilling device for a single-sided PCB according to claim 1, characterized in that: An air extraction pipe (401) is installed on the inner side of the connecting frame (102), and the air extraction pipe (401) is in communication with the interior of the connecting frame (102).

5. A drilling device for a single-sided PCB according to claim 2, characterized in that: The sealing structure includes a first folding sleeve (501), and the first folding sleeve (501) and the second folding sleeve (502) are installed between the protective cover (103) and the compression ring (106).

6. The drilling device for a single-sided PCB according to claim 1, characterized in that: A silicone pad (601) is installed at the lower end of the compression ring (106).

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