PCB board burr polishing equipment

Abstract

The present application relates to PCB production equipment technical field, especially to a kind of PCB burr polishing equipment.The present application provides a kind of PCB burr polishing equipment to improve polishing efficiency by simultaneously polishing opposite side of PCB.A kind of PCB burr polishing equipment, including pedestal, first motor, center shaft and adsorption type bearing platform, etc., center shaft rotationally connected in pedestal center position, first motor is fixed to pedestal bottom and provides power to center shaft, center shaft is cross and end is provided with adsorption type bearing platform, adsorption type bearing platform is built-in pump machine.Through third motor drives grinding roller unit to simultaneously polish one side of PCB, at the same time, the horizontal movement of the moving frame is driven by the movement unit through the worm connected to the output shaft of the third motor, so that the grinding roller unit can move the edge of the PCB.

Description

Technical Field

[0001] This invention relates to the field of PCB board production equipment technology, and in particular to a PCB board burr removal and polishing equipment. Background Technology

[0002] Blinders are a common problem in PCB manufacturing. Blinder formation is related to various factors, such as the aluminum sheet not being tightly adhered to the circuit board during drilling, unevenness of the substrate surface during reverse engineering, insufficiently sharp drill bits, and residue on the outer conductive lines of the circuit board. These factors result in excess metal or resin protrusions at the edges of the PCB, affecting not only the product's aesthetics but also potentially its electrical performance and reliability.

[0003] Currently, most existing burr removal equipment on the market uses a method of sequentially sanding each of the four edges of the PCB board. The limitations of this method are mainly reflected in the following aspects: 1. Low efficiency: Since the equipment can only process the four sides of the PCB board one by one, this processing method is obviously time-consuming for mass production, which seriously affects production efficiency.

[0004] 2. Difficult to automate: Since manual operation is required to process each edge sequentially, this increases human factors and labor intensity, making it difficult to automate and intelligentize the processing.

[0005] 3. Unstable processing results: Since the equipment can only process a single edge, for PCBs with complex shapes or large sizes, there may be problems with incomplete sanding or difficulty in reaching the surface, resulting in unstable removal results.

[0006] Common standard PCB board sizes include 1 inch x 1 inch (approximately 25.4mm x 25.4mm), 2 inches x 2 inches (approximately 50.8mm x 50.8mm), and 4 inches x 4 inches (approximately 101.6mm x 101.6mm). Based on this, for conventional square PCB boards, this invention proposes a device that simultaneously polishes opposite sides of the PCB board to improve burr removal efficiency. Summary of the Invention

[0007] In order to overcome the shortcomings of existing PCB board burr sanding equipment, which can only sand the four sides separately, resulting in low efficiency, difficulty in guaranteeing the sanding effect, and risk of damaging the PCB board structure, this invention provides a PCB board burr sanding equipment that can simultaneously sand opposite sides of the PCB board to improve sanding efficiency.

[0008] A PCB board burr removal and polishing device includes a base, a first motor, a central shaft, and an adsorption-type support. The central shaft is rotatably connected to the center of the base. The first motor is fixed to the bottom of the base and provides power to the central shaft. The central shaft is cross-shaped and has an adsorption-type support at its end. The adsorption-type support has a built-in pump. The device also includes a mounting bracket, a turntable, a mounting plate, a second motor, polishing mechanisms, and a moving unit. The mounting bracket is radially fixed to the side of the base. The turntable is rotatably connected to the upper end of the mounting bracket. The second motor is connected to the mounting bracket, and its output shaft drives the turntable to rotate via a coupling. The mounting plate is connected to the turntable below it. The polishing mechanisms are respectively located on opposite sides of the mounting plate. The moving unit has a built-in moving unit. When the polishing mechanism polishes the edge of the PCB board located on the adsorption-type support to remove burrs, the moving unit can control the polishing mechanism to move horizontally on the mounting plate. Controlling the second motor to drive the turntable to rotate 90 degrees allows for separate polishing of the right-angled edges of the PCB board.

[0009] Furthermore, the grinding mechanism consists of a moving frame, a third motor, a worm gear, and a grinding roller unit. The moving frame is slidably connected to the side of the mounting plate via a spline. The third motor is fixed inside the moving frame by bolts. The output shaft of the third motor is connected to the worm gear via a coupling. The end of the worm gear is connected to the grinding roller unit via a key.

[0010] Furthermore, the grinding roller unit consists of two longitudinally arranged and parallel grinding rollers. One grinding roller is connected to the end of the worm gear by a key, and the other grinding roller is rotatably connected to the moving frame. The two grinding rollers are driven by a pulley set.

[0011] Furthermore, the moving unit consists of a drive shaft, a worm gear, a gear, and a rack. The drive shaft is vertically positioned and rotatably connected within the moving frame. A worm gear is connected to the middle end of the drive shaft via a key, and the worm gear meshes with a worm. A gear is connected to the upper end of the drive shaft via a key. The rack is horizontally positioned within the mounting plate, and the gear meshes with the rack.

[0012] Furthermore, it also includes a fixed base, a telescopic block, a horizontal axis, a vertical axis, a support rod, and a positioning block. The fixed base is fixed to the base with bolts. The telescopic block is connected to the upper part of the fixed base. The telescopic block is divided into a hollow part and a sloping part. The inner wall of the hollow part of the telescopic block is symmetrically provided with horizontal axes. The vertical axis is slidably connected between the horizontal axes. The support rod is slidably connected on the vertical axis. The positioning block is located at the upper end of the support rod.

[0013] Furthermore, the bottom of the adsorption-type support is provided with an inclined surface, which allows the adsorption-type support to contact the telescopic block, and the inclined surface of the adsorption-type support makes frictional contact with the inclined surface of the telescopic block.

[0014] Furthermore, a right-angled groove is provided inside the positioning block, which is used to position the PCB board.

[0015] Furthermore, equidistant slots are provided on both the horizontal and vertical axes, and pins that can be inserted into the slots are provided at the ends of the vertical axes and the lower ends of the support rods.

[0016] Furthermore, it also includes an adjusting screw and a guide rod. The adjusting screw is rotatably connected to the lower part of the turntable. The adjusting screw has symmetrical double threads. The adjusting screw is connected to the mounting plates on both sides through the threads. An insertable guide rod is connected between the mounting plates.

[0017] Furthermore, it also includes a scraper and a processing box. The scraper is connected to the movable frame via a bracket, and the processing box is located below the mounting bracket. The scraper is located outside the grinding roller unit, and the processing box is located below the scraper. The debris will be uniformly guided into the processing box for unified collection and processing.

[0018] The beneficial effects are as follows: 1. The third motor drives the grinding roller unit to grind one pair of edges of the PCB board simultaneously. At the same time, the worm gear connected to the output shaft of the third motor drives the moving frame to move horizontally through the moving unit, so that the grinding roller unit can perform moving grinding on the edge of the PCB board. The second motor is turned on to drive the turntable to rotate 90 degrees, and the grinding roller unit grinds the other pair of edges of the PCB board to remove burrs. Compared with the traditional method of grinding the four sides of the PCB board in sequence, this device not only doubles the grinding efficiency, but also unifies the grinding quality and improves the output quality of the PCB board.

[0019] 2. It is equipped with a positioning block that can be adjusted in real time. The positioning block can be moved flexibly by moving the horizontal support rod and the vertical axis. The positioning block accurately positions the PCB board at the designated position of the adsorption support, so that the grinding mechanism can accurately grind the edge of the PCB board. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the base and central axis of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the grinding mechanism and moving unit of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the moving frame, worm gear, grinding roller unit, and transmission shaft of the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the fixing seat and telescopic block of the present invention.

[0025] Figure 6 This is a detailed three-dimensional structural view of point A in the present invention.

[0026] Figure 7 This is a three-dimensional structural diagram of the adjusting lead screw and guide rod of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of the scraper of the present invention.

[0028] Component names and numbers in the diagram: 1_Base, 2_First motor, 3_Central shaft, 4_Adsorption-type support, 5_Mounting bracket, 6_Turntable, 7_Mounting plate, 8_Second motor, 9_Moving frame, 10_Third motor, 11_Worm gear, 12_Grinding roller unit, 13_Drive shaft, 14_Worm wheel, 15_Gear, 16_Rack, 17_Fixed seat, 18_Telescopic block, 19_Horizontal axis, 20_Vertical axis, 21_Support rod, 22_Positioning block, 23_Adjusting screw, 24_Guide rod, 25_Scraper, 26_Processing box. Detailed Implementation

[0029] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example: A PCB board burr removal and polishing device, such as Figures 1-4 As shown, the system includes a base 1, a first motor 2, a central shaft 3, and an adsorption-type support 4. The central shaft 3 is rotatably connected to the center of the base 1. The first motor 2 is fixed to the bottom of the base 1 and provides power to the central shaft 3. The central shaft 3 is cross-shaped and has an adsorption-type support 4 at its end. The adsorption-type support 4 has a built-in pump. The system also includes a mounting bracket 5, a turntable 6, a mounting plate 7, a second motor 8, a grinding mechanism, and a moving unit. The mounting bracket 5 is radially fixed to the side of the base 1 and is located on the right side of the base 1. The upper end of the mounting bracket 5 is rotatably connected to... There is a turntable 6, and a second motor 8 is connected to the mounting bracket 5. The output shaft of the second motor 8 drives the turntable 6 to rotate through a coupling. The mounting plates 7 are slidably connected to the turntable 6 below. The grinding mechanisms are respectively set on the opposite sides of the mounting plates 7. The grinding mechanism has a built-in moving unit. When the grinding mechanism is used to grind the edge of the PCB board located on the adsorption support 4 to remove burrs, the moving unit can control the grinding mechanism to move horizontally on the mounting plate 7. Controlling the second motor 8 to drive the turntable 6 to rotate 90 degrees can grind the right-angled edges of the PCB board separately.

[0031] like Figure 1 , Figure 3 and Figure 4As shown, the polishing mechanism consists of a moving frame 9, a third motor 10, a worm gear 11, and a polishing roller unit 12. The moving frame 9 is slidably connected to the side of the mounting plate 7 via a spline. The third motor 10 is fixed inside the moving frame 9 by bolts. The output shaft of the third motor 10 is connected to the worm gear 11 via a coupling. The end of the worm gear 11 is connected to the polishing roller unit 12 via a key. The polishing roller unit 12 consists of two longitudinally arranged and parallel polishing rollers. One polishing roller is connected to the end of the worm gear 11 via a key, and the other polishing roller is rotatably connected to the moving frame 9. The two polishing rollers are driven by a pulley set. By setting two polishing rollers, the top and bottom edges of the PCB board can be polished simultaneously, thereby improving the polishing effect. Controlling the third motor 10 to turn it on can drive the worm gear 11 and the polishing roller unit 12 to rotate simultaneously. It should be noted that the two third motors 10 located on the two mounting plates 7 are synchronous motors to ensure the synchronous rotation of the polishing roller unit 12 and to unify the polishing effect on the PCB board.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, the moving unit consists of a drive shaft 13, a worm gear 14, a gear 15, and a rack 16. The drive shaft 13 is vertically positioned and rotatably connected within the moving frame 9. The worm gear 14 is connected to the middle of the drive shaft 13 via a key, and the worm gear 14 meshes with the worm 11. The gear 15 is connected to the upper end of the drive shaft 13 via a key. The rack 16 is horizontally positioned within the mounting plate 7, and the gear 15 meshes with the rack 16. Initially, the moving frame 9 is located on the right side of the mounting plate 7. When the third motor 10 is turned on, it drives the grinding roller unit 12 to rotate and grind the edge of the PCB board. At the same time, the worm 11 drives the worm gear 14 to rotate, which in turn drives the drive shaft 13 to rotate, which in turn drives the gear 15 to rotate. The gear 15 is connected to the rack. Guided by the 16, the moving frame 9 moves to the left. At this time, the grinding roller unit 12 will grind one pair of edges of the PCB board. When the moving frame 9 moves to the left side of the mounting plate 7, the second motor 8 is turned on to drive the turntable 6 to rotate 90 degrees clockwise. Then the moving frame 9 is located behind the mounting plate 7. After controlling the third motor 10 to rotate in the opposite direction, the third motor 10 drives the moving frame 9 to move forward through the moving unit, thereby grinding the other pair of edges of the PCB board. When the moving frame 9 moves to the front of the mounting plate 7, the edges of the PCB board are all ground to remove burrs. Compared with the traditional method of grinding the four sides of the PCB board separately, this device doubles the grinding efficiency and greatly improves the PCB board production efficiency.

[0033] like Figure 1 , Figure 5 and Figure 6As shown, it also includes a fixed base 17, a telescopic block 18, a horizontal axis 19, a vertical axis 20, a support rod 21, and a positioning block 22. The fixed base 17 is fixed to the top front side of the base 1 by bolts. The telescopic block 18 is connected to the upper part of the fixed base 17. The front and rear of the telescopic block 18 are respectively inclined and hollow parts. The horizontal axis 19 is symmetrically arranged on the inner wall of the hollow part of the telescopic block 18. The vertical axis 20 is slidably connected between the horizontal axis 19. The support rod 21 is slidably connected to the vertical axis 20. The positioning block 22 is connected to the upper end of the support rod 21. The positioning block 22 has a right-angled groove inside, which is used to position the PCB board. The bottom of the adsorption support 4 is provided with an inclined surface. The adsorption support 4 can contact the telescopic block 18. The inclined surface of the adsorption support 4 is in frictional contact with the inclined surface of the telescopic block 18. The central shaft 3 rotates continuously. During this process, the adsorption support 4 contacts and pushes the telescopic block 18 downward, allowing the positioning block 22 at the upper end of the telescopic block 18 to perform its positioning function normally without obstructing the rotation of the central shaft 3. Both the horizontal shaft 19 and the vertical shaft 20 have equidistant slots, and the end of the vertical shaft 20 and the lower end of the support rod 21 are equipped with pins that can be inserted into the slots. That is, by inserting and pulling the pin at the lower end of the support rod 21, the position of the support rod 21 on the vertical shaft 20 can be adjusted, and by inserting and pulling the pin at the end of the vertical shaft 20, the position of the vertical shaft 20 on the horizontal shaft 19 can be adjusted. The effect is that the position of the support rod 21 can be precisely adjusted according to the different specifications of the PCB board, so that the positioning block 22 at the upper end of the support rod 21 always limits the PCB board to the designated position of the adsorption support 4, and the grinding mechanism can accurately grind the edge of the PCB board to remove burrs.

[0034] like Figure 1 and Figure 7 As shown, it also includes an adjusting screw 23 and a guide rod 24. The adjusting screw 23 is rotatably connected to the lower part of the turntable 6. The adjusting screw 23 has symmetrical double threads. The adjusting screw 23 is connected to the mounting plates 7 on both sides through the threads. The adjusting screw 23 is provided with symmetrical double threads to drive the mounting plates 7 to move synchronously in opposite directions or in opposite directions. The mounting plates 7 are connected to the insertable guide rod 24.

[0035] like Figure 1 and Figure 8 As shown, it also includes a scraper 25 and a processing box 26. The scraper 25 is connected to the movable frame 9 via a bracket. The processing box 26 is located below the mounting bracket 5. The scraper 25 is located outside the grinding roller unit 12. The scraper 25 can remove PCB board debris adhering to the grinding roller. The processing box 26 is located below the scraper 25. The debris will be uniformly guided into the processing box 26 for unified collection and processing.

[0036] The working principle of this invention embodiment is as follows: The position of the positioning block 22 is adjusted according to the specifications of the PCB board batch being produced. Specifically, the support rod 21 and the longitudinal axis 20 are moved horizontally and fixed by pins. The positioning block 22 can position one corner of the PCB board. Then, the spacing of the mounting plate 7 is adjusted by adjusting the lead screw 23, allowing the grinding roller unit 12 to accurately grind the edge of the PCB board. After the PCB board is accurately placed in the designated position on the adsorption support 4, the adsorption support 4 fixes the PCB board in an adsorption manner. The first motor 2 is turned on, driving the central shaft 3 to rotate intermittently by 90 degrees. The adsorption support 4 carries the PCB board to rotate below the mounting bracket 5. The third motor 10 is then turned on, driving the grinding roller unit 12 to operate, grinding... The grinding roller in roller unit 12 grinds the edges of the PCB board. At the same time, worm gear 11 drives worm wheel 14 to rotate, and worm wheel 14 drives transmission shaft 13 to rotate. Transmission shaft 13 drives gear 15 to rotate. Since gear 15 meshes with rack 16, moving frame 9 will move horizontally relative to mounting plate 7. After the grinding mechanism finishes grinding one pair of edges of the PCB board, the second motor 8 is turned on to drive turntable 6 to rotate 90 degrees. Then, the third motor 10 is controlled to rotate in the opposite direction to drive grinding roller unit 12 to grind the other pair of edges of the PCB board. Compared with the traditional method of grinding all four edges of the PCB board separately, this device not only greatly improves grinding efficiency, but also unifies the grinding effect and ensures the quality of the PCB board after grinding.

[0037] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A PCB board burr removal and polishing device, comprising a base (1), a first motor (2), a central shaft (3), and an adsorption support (4), wherein the central shaft (3) is rotatably connected to the center of the base (1), the first motor (2) is fixed to the bottom of the base (1) and provides power to the central shaft (3), the central shaft (3) is cross-shaped and has an adsorption support (4) at its end, characterized in that, It also includes a mounting bracket (5), a turntable (6), a mounting plate (7), a second motor (8), a grinding mechanism, and a moving unit. The mounting bracket (5) is radially fixed to the side of the base (1). The upper end of the mounting bracket (5) is rotatably connected to the turntable (6). The second motor (8) is connected to the mounting bracket (5). The output shaft of the second motor (8) drives the turntable (6) to rotate through a coupling. The mounting plate (7) is connected to the turntable (6) from opposite sides. The grinding mechanisms are respectively set on the opposite sides of the mounting plate (7). The grinding mechanism has a built-in moving unit. When the grinding mechanism grinds the edge of the PCB board located on the adsorption support (4) to remove burrs, the moving unit can control the grinding mechanism to move horizontally on the mounting plate (7). The second motor (8) can drive the turntable (6) to rotate to grind the right-angled edges of the PCB board separately.

2. The PCB board burr removal and polishing equipment according to claim 1, characterized in that, The grinding mechanism consists of a moving frame (9), a third motor (10), a worm gear (11), and a grinding roller unit (12). The moving frame (9) is slidably connected to the side of the mounting plate (7) via a spline. The third motor (10) is fixed inside the moving frame (9) by bolts. The output shaft of the third motor (10) is connected to the worm gear (11), and the end of the worm gear (11) is connected to the grinding roller unit (12). The moving unit consists of a drive shaft (13), a worm gear (14), a gear (15), and a rack (16). The drive shaft (13) is vertically mounted and rotatably connected to the moving frame (9). The middle end of the drive shaft (13) is connected to the worm gear (14) via a key. The worm gear (14) meshes with the worm (11). The upper end of the drive shaft (13) is connected to the gear (15) via a key. The rack (16) is horizontally mounted in the mounting plate (7). The gear (15) and the rack (16) mesh with each other.

3. The PCB board burr removal and polishing equipment according to claim 2, characterized in that, The grinding roller unit (12) consists of two longitudinally arranged and parallel grinding rollers. One grinding roller is connected to the end of the worm (11) by a key, and the other grinding roller is rotatably connected to the movable frame (9). The two grinding rollers are driven by a pulley set.

4. The PCB board burr removal and polishing equipment according to claim 3, characterized in that, It also includes a fixed seat (17), a telescopic block (18), a horizontal axis (19), a vertical axis (20), a support rod (21), and a positioning block (22). The fixed seat (17) is fixed to the base (1) by bolts. The upper part of the fixed seat (17) is connected to the telescopic block (18). The telescopic block (18) is divided into a hollow part and a sloping part. The inner wall of the hollow part of the telescopic block (18) is symmetrically provided with a horizontal axis (19). The vertical axis (20) is slidably connected between the horizontal axes (19). The support rod (21) is slidably connected to the vertical axis (20). The positioning block (22) is located at the upper end of the support rod (21). The bottom of the adsorption type support (4) is provided with an inclined surface, and the adsorption type support (4) can contact the telescopic block (18). The inclined surface of the adsorption type support (4) and the inclined surface of the telescopic block (18) are in frictional contact.

5. A PCB board burr removal and polishing device according to claim 4, characterized in that, The positioning block (22) has a right-angled groove inside.

6. The PCB board burr removal and polishing equipment according to claim 5, characterized in that, Both the horizontal axis (19) and the vertical axis (20) are provided with equidistant slots, and the end of the vertical axis (20) and the lower end of the support rod (21) are provided with pins that can be inserted into the slots.

7. A PCB board burr removal and polishing device according to claim 6, characterized in that, It also includes an adjusting screw (23) and a guide rod (24). The adjusting screw (23) is rotatably connected to the lower part of the turntable (6). The adjusting screw (23) is simultaneously connected to the two mounting plates (7) by threads. An insertable guide rod (24) is connected between the mounting plates (7).

8. A PCB board burr removal and polishing device according to claim 7, characterized in that, It also includes a scraper (25) and a processing box (26). The scraper (25) is connected to the movable frame (9) by a bracket, and the processing box (26) is located below the mounting bracket (5). The scraper (25) is located outside the grinding roller unit (12).

Images