A burr removing device for PCB processing

Abstract

The utility model discloses a kind of burr removing devices for PCB processing, including processing box, the inside of processing box is equipped with assembly frame component, the inside processing cavity bottom of processing box is fixedly connected with guide rail, the top end slidingly connected with movable plate of guide rail, the inside of movable plate is equipped with burr removing component, the utility model relates to PCB board processing device technical field;The burr removing device for PCB processing is placed in the inside of processing box by assembly frame component, in the process that abrasive brush removes the burr of the burr hole position of PCB outside, high-pressure gas that the spray pipe of airflow pipe connection sprays is cleaned to the burr adsorbed on the outside of PCB and abrasive brush, so that the burr adsorbed on PCB and abrasive brush falls off, improve the burr removal efficiency of PCB outside, prevent burr from being adsorbed on the outside of abrasive brush and affect the cleaning effect of burr on the outside of PCB.

Description

Technical Field

[0001] This utility model relates to the technical field of PCB board processing equipment, specifically a burr removal device for PCB processing. Background Technology

[0002] A PCB (Printed Circuit Board) is one of the core components of electronic devices, used for mechanical support and electrical connection of electronic components. A PCB is a plate-like structure composed of an insulating substrate and conductive copper layers. Pre-designed circuit traces are formed on the substrate through processes such as printing and etching to mount and interconnect electronic components. Drilling is a critical step in PCB manufacturing, including vias, through-holes, heat dissipation holes, and back-drilled holes. Drilling methods include laser drilling and mechanical drilling. Mechanical drilling produces burrs on both sides of the holes on the PCB. These burrs may cause accidental contact between adjacent conductive layers or hole walls, leading to short circuits; burrs can also change the characteristic impedance of transmission lines, increasing signal reflection and loss; and the burr tips may also cause partial discharge, accelerating insulation aging. Therefore, burrs generated at the drilling locations need to be removed during PCB manufacturing.

[0003] For PCBs with different processing requirements, deburring operations are divided into multiple steps, including mechanical deburring, chemical deburring, and laser deburring. Mechanical deburring mainly uses a nylon brush to rotate at high speed on the edge of the hole or uses high-pressure air to remove residual debris inside the hole to achieve the deburring effect. However, during the deburring process of a flat PCB, the friction between the abrasive brush and the PCB generates static electricity. The electrostatic attraction force attracts the burrs removed by the abrasive brush to the outside of the PCB, making it difficult to efficiently remove burrs from the outside of the PCB. At the same time, the burrs also adhere to the outside of the abrasive brush, which in turn affects the cleaning effect of the abrasive brush on the burrs on the outside of the PCB and at the drilling location.

[0004] Therefore, this utility model provides a burr removal device for PCB processing to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a burr removal device for PCB processing, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a burr removal device for PCB processing, comprising a processing box, an assembly frame assembly installed inside the processing box, a guide rail fixedly connected to the bottom of the processing cavity inside the processing box, a movable plate slidably connected to the top of the guide rail, a burr removal assembly installed inside the movable plate, a drive assembly installed on the top of the movable plate, and a moving assembly installed inside the processing box, the moving assembly being connected to the movable plate;

[0007] The burr removal assembly includes a rotating shaft installed inside the movable plate, and an abrasive brush is installed on the outside of the rotating shaft.

[0008] Airflow pipes are symmetrically installed on both sides of the movable plate, and nozzles are installed on the outside of the airflow pipes.

[0009] A flexible hose is installed on the outside of the airflow pipe. The flexible hose passes through the processing box and is fixedly connected to an air pump A at its tail end.

[0010] Preferably, the drive assembly includes a worm gear fixedly connected to the middle end of the rotating shaft, a servo motor A fixedly connected to the top of the movable plate, a worm fixedly connected to the output end of the servo motor A, and the worm gear meshing with the worm.

[0011] Preferably, the assembly frame includes a mounting rod fixedly connected to the inner wall of the processing cavity inside the processing box, a lower clamping rod fixedly connected to the lower end of the mounting rod, and an upper clamping rod slidably connected to the outer end of the mounting rod.

[0012] Preferably, the moving component includes a servo motor B fixedly connected to the back of the processing box, and a screw fixedly connected to the output end of the servo motor B, the screw being installed in the processing cavity inside the processing box.

[0013] Preferably, a ventilation plate is installed on the side wall of the processing chamber of the processing box, a collection box is installed on the outside of the processing box, and an air pump B is fixedly connected to the outside of the collection box.

[0014] Beneficial effects

[0015] This invention provides a burr removal device for PCB processing. Compared with the prior art, it has the following advantages:

[0016] This PCB deburring device vertically places the PCB inside the processing box using an assembly frame. During the process of removing burrs from the PCB exterior and its drilled areas using an abrasive brush, high-pressure gas is sprayed from a nozzle connected to an airflow pipe to clean the burrs adsorbed on the PCB and the abrasive brush exterior. This causes the burrs adsorbed on the PCB and the abrasive brush to fall off, improving the efficiency of PCB exterior burr removal while preventing burrs from adsorbing on the abrasive brush exterior and affecting its cleaning effect on the PCB exterior burrs. Attached Figure Description

[0017] Figure 1 This is a perspective view of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the movable plate and the rotating shaft of this utility model;

[0019] Figure 3This is a schematic diagram of the connection structure between the worm gear and the worm of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the assembly frame component of this utility model;

[0021] Figure 5 This is a side view of the present invention.

[0022] In the diagram: 1. Processing box; 2. Assembly frame assembly; 201. Mounting rod; 202. Lower clamping rod; 203. Upper clamping rod; 3. Guide rail; 4. Movable plate; 5. Deburring assembly; 501. Rotating shaft; 502. Abrasive brush; 503. Airflow pipe; 504. Nozzle; 505. Hose; 506. Air pump A; 6. Drive assembly; 601. Worm gear; 602. Servo motor A; 603. Worm; 7. Moving assembly; 701. Servo motor B; 702. Screw; 8. Ventilation plate; 9. Collection box; 10. Air pump B. Detailed Implementation

[0023] 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.

[0024] Example 1:

[0025] Please see Figure 1-3 A burr removal device for PCB processing includes a processing box 1, an assembly frame assembly 2 installed inside the processing box 1, a guide rail 3 fixedly connected to the bottom of the processing cavity inside the processing box 1, a movable plate 4 slidably connected to the top of the guide rail 3, a burr removal assembly 5 installed inside the movable plate 4, a drive assembly 6 installed on the top of the movable plate 4, and a moving assembly 7 installed inside the processing box 1, which is connected to the movable plate 4.

[0026] The burr removal assembly 5 includes a rotating shaft 501 installed inside the movable plate 4. The rotating shaft 501 is rotatably connected to the movable plate 4. Connecting plates are symmetrically fixedly connected to both ends of the rotating shaft 501. An abrasive brush 502 is fixedly connected to the outside of the connecting plates. Sleeves are symmetrically fixedly connected to the outside of the movable plate 4. The connecting plates and sleeves are rotatably connected.

[0027] Airflow pipes 503 are symmetrically installed on both sides of the movable plate 4. The airflow pipes 503 are wavy and are sleeved on the outside of the sleeve column. A nozzle 504 is installed on the outside of the airflow pipes 503. A mounting buckle is fixedly connected between the movable plate 4 and the airflow pipes 503.

[0028] A flexible hose 505 is installed on the outside of the airflow pipe 503. Two symmetrically arranged airflow pipes 503 are fixed by a U-shaped connecting pipe. The flexible hose 505 is fixedly connected to the U-shaped connecting pipe and is in communication. The flexible hose 505 passes through the processing box 1 and the tail end is fixedly connected to an air pump A506. The air pump A506 is fixedly connected to the back side of the processing box 1.

[0029] The nozzle 504 is provided in several groups and is arranged linearly and equidistantly. The interior of the movable plate 4 is provided with a cavity. The drive assembly 6 includes a worm gear 601 fixedly connected to the middle end of the rotating shaft 501. A servo motor A602 is fixedly connected to the top of the movable plate 4. A worm 603 is fixedly connected to the output end of the servo motor A602. The worm gear 601 meshes with the worm 603.

[0030] The movable plate 4 is provided in four sets, and a fixed column is fixedly connected between two adjacent sets of movable plates 4. The moving component 7 includes a servo motor B701 fixedly connected to the back of the processing box 1. A screw 702 is fixedly connected to the output end of the servo motor B701. The screw 702 is installed in the processing cavity inside the processing box 1. The screw 702 is threadedly connected to the fixed column between the two sets of movable plates 4 at the center position.

[0031] In this embodiment, the assembly frame 2 is used to vertically fix the PCB board in the processing cavity inside the processing box 1. During the deburring process, the removed burrs can fall off, effectively preventing burrs from adhering to the outside of the PCB board. During the process of removing burrs from the outside of the PCB board and the drilling positions, the rotating shaft 501 drives the externally mounted abrasive brush 502 to clean the burrs on the outside of the PCB board. At the same time, high-pressure airflow is ejected from the nozzle 504 connected to the airflow pipe 503. The high-pressure airflow is sprayed on the outside of the PCB board, causing the burrs attached to the outside of the PCB board to fall off quickly. On the other hand, the high-pressure airflow is sprayed on the abrasive brush 502. The external surface of the abrasive brush 502 is designed to remove burrs adsorbed on the outside of the PCB board, thereby improving the efficiency of burr removal on the outside of the PCB board and preventing the abrasive brush 502 from adsorbing too many burrs, which would affect its cleaning effect on the burrs on the outside of the PCB board. The servo motor A602 is used to drive the worm gear 603 to rotate inside the movable plate 4, thereby driving the rotating shaft 501 connected to the worm wheel 601 to rotate, which causes the abrasive brush 502 mounted on the outside of the rotating shaft 501 to rotate at high speed. The servo motor B701 drives the screw 702 to rotate, thereby causing multiple sets of movable plates 4 to move back and forth inside the processing cavity of the processing box 1, thereby cleaning burrs at different positions on the outside of the PCB board.

[0032] Example 2:

[0033] Please see Figure 1 and Figure 4This embodiment provides a burr removal device for PCB processing based on embodiment one: the assembly frame assembly 2 includes an installation rod 201 fixedly connected to the inner wall of the processing cavity inside the processing box 1. The lower end of the installation rod 201 is fixedly connected to a lower clamping rod 202, and the outer end of the installation rod 201 is slidably connected to an upper clamping rod 203. Both the lower clamping rod 202 and the upper clamping rod 203 are provided with five rods and their positions correspond.

[0034] In this embodiment, the upper clamping rod 203 can slide outside the mounting rod 201 and can be adjusted according to the size of the PCB board, making it suitable for PCB boards of various specifications. At the same time, both the lower clamping rod 202 and the upper clamping rod 203 are provided with five rods, which can assemble five PCB boards at the same time and process multiple PCB boards at the same time, improving the efficiency of PCB board burr removal.

[0035] Example 3:

[0036] Please see Figure 1 and Figure 5 This embodiment provides a burr removal device for PCB processing based on embodiment one: a ventilation plate 8 is installed on the side wall of the processing chamber of the processing box 1, a collection box 9 is installed on the outside of the processing box 1, the ventilation plate 8 is connected to the collection box 9, and an air pump B10 is fixedly connected to the outside of the collection box 9, and the collection box 9 is connected to the air pump B10.

[0037] In this embodiment, the burrs blown out by the nozzle 504 fly around in the processing chamber inside the processing box 1. As the abrasive brush 502 generates static electricity at its outer end during the cleaning process of the PCB board, some of the burrs are adsorbed on the outside of the PCB board. The suction generated by the air pump B10 draws the flying burrs from the ventilation plate 8 into the collection box 9, reducing the burrs inside the processing chamber of the processing box 1 and improving the burr removal and cleaning effect of the PCB board.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] Working principle:

[0040] During the burr removal process on the PCB board, the outer door of the processing box 1 is first opened, and multiple PCB boards are inserted into the lower clamping rod 202. Simultaneously, the upper clamping rod 203 slides outside the mounting rod 201. The lower and upper clamping rods 202 and 203 clamp and fix the PCB boards. After closing the door, the servo motor A602 drives the worm gear 603 fixed at its output end to rotate inside the movable plate 4. The rotating worm gear 603 drives the rotating shaft 501 fixed to the worm wheel 601 to rotate inside the movable plate 4, thereby causing the abrasive brushes 502 fixed to the connecting plates at both ends of the rotating shaft 501 to rotate. The rotating abrasive brushes 502 clean the exterior of the PCB board. Simultaneously, the air pump A506 delivers airflow from the hose 505 to the airflow pipe 503, and high-pressure airflow is ejected from the nozzle 504. The ejected high-pressure airflow is sprayed onto the exterior of the PCB board and the abrasive brushes 502. This process causes burrs adsorbed on the PCB board and the abrasive brush 502 to fall off. During the burr removal process, the servo motor B701 drives the screw 702 fixed at its output end to rotate. Since the screw 702 is connected to the fixed rods of multiple sets of movable plates 4 by a threaded connection, the movable plates 4 reciprocate at the top of the guide rail 3. This causes the abrasive brush 502 and the nozzle 504 installed on the outside of the movable plates 4 to clean the burrs on the outside of the PCB board. At the same time, the suction generated by the air pump B10 creates a negative pressure state in the processing chamber inside the processing box 1, causing the detached burrs to be sucked into the collection box 9 from the ventilation plate 8. The removed burrs are collected, reducing the burr content inside the processing box 1 and preventing static electricity generated by the friction between the abrasive brush 502 and the PCB board. This causes the burrs to be adsorbed on the outside of the PCB board and the abrasive brush 502 again, improving the burr removal effect on the outside of the PCB board.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A burr removal device for PCB processing, comprising a processing box (1), characterized in that: The processing box (1) is equipped with an assembly frame assembly (2). The bottom of the processing cavity inside the processing box (1) is fixedly connected to a guide rail (3). The top of the guide rail (3) is slidably connected to a movable plate (4). The movable plate (4) is equipped with a burr removal assembly (5). The top of the movable plate (4) is equipped with a drive assembly (6). The processing box (1) is equipped with a moving assembly (7). The moving assembly (7) is connected to the movable plate (4). The burr removal assembly (5) includes a rotating shaft (501) installed inside the movable plate (4), and an abrasive brush (502) is installed on the outside of the rotating shaft (501). Airflow pipes (503) are symmetrically installed on both sides of the movable plate (4), and nozzles (504) are installed on the outside of the airflow pipes (503); A flexible hose (505) is installed on the outside of the airflow pipe (503). The flexible hose (505) passes through the processing box (1) and is fixedly connected to the end of the air pump A (506).

2. The burr removal device for PCB processing according to claim 1, characterized in that: The drive assembly (6) includes a worm gear (601) fixedly connected to the middle end of the rotating shaft (501), a servo motor A (602) fixedly connected to the top of the movable plate (4), a worm (603) fixedly connected to the output end of the servo motor A (602), and the worm gear (601) meshes with the worm (603).

3. The burr removal device for PCB processing according to claim 1, characterized in that: The assembly frame assembly (2) includes an installation rod (201) fixedly connected to the inner wall of the processing cavity inside the processing box (1). The lower end of the installation rod (201) is fixedly connected to a lower clamping rod (202), and the outer end of the installation rod (201) is slidably connected to an upper clamping rod (203).

4. The burr removal device for PCB processing according to claim 1, characterized in that: The moving component (7) includes a servo motor B (701) fixedly connected to the back of the processing box (1), and a screw (702) is fixedly connected to the output end of the servo motor B (701). The screw (702) is installed in the processing cavity inside the processing box (1).

5. The burr removal device for PCB processing according to claim 1, characterized in that: A ventilation plate (8) is installed on the side wall of the processing chamber of the processing box (1), and a collection box (9) is installed on the outside of the processing box (1). An air pump B (10) is fixedly connected to the outside of the collection box (9).

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