Polishing device for PCB machining

Abstract

The invention discloses a polishing device for PCB machining, and belongs to the technical field of PCB machining. The device comprises two sets of guide shells, the opposite sides of the two sets of guide shells are open, the rear side of each set of guide shell is provided with a rear guide plate, the front side of each set of guide shell is provided with a front guide plate, the upper end of each set of guide shell is provided with a feeding opening for a PCB to pass through, the PCB is fed from the feeding opening, and the upper end of each set of guide shell is provided with a discharging opening for the PCB to pass through. Moving along the rear guide plate and the front guide plate; a grinding mechanism is arranged on the inner side of each guide shell, and each grinding mechanism comprises a motor fixedly arranged on the corresponding guide shell. When the PCB feeding device is used, the rear guide plate, the front guide plate and the feeding opening provide a stable moving channel for a PCB, and it is ensured that the PCB can move accurately. The first polishing assembly and the second polishing assembly rotate together, so that the edges of the two sides of the PCB can be polished, the production efficiency is improved, and errors caused by manual operation are reduced.

Description

Technical Field

[0001] This invention relates to the field of PCB board processing technology, and in particular to a grinding device for PCB board processing. Background Technology

[0002] PCB fabrication is the process of transforming electronic circuit designs into usable printed circuit boards. First, a large copper-clad laminate is cut to the appropriate size according to requirements. Next, holes are drilled to create through-holes for component leads and conductors. Then, chemical copper plating is performed to coat the hole walls with copper, achieving interlayer conductivity. Afterward, the circuit pattern is transferred to the board surface using pattern transfer, and excess copper foil is etched away to form the circuitry. A thicker copper layer is then electroplated onto the board surface to enhance conductivity. Solder resist ink is then printed to protect the circuitry, and characters are printed for easy identification. Finally, surface treatments such as tin plating are performed, and electrical performance tests are conducted to ensure the PCB meets quality standards and is ready for use in electronic devices.

[0003] After a PCB board is cut, many burrs will appear on its edges. Nowadays, workshops generally remove burrs by mechanical grinding, that is, by using tools such as sandpaper, sanding belt or grinding head to grind the edges, which can quickly remove burrs and make the edges smooth.

[0004] The shortcomings of the existing technical solutions are: the mechanical grinding operation mainly relies on manual labor, making it difficult to significantly increase the speed. Moreover, manual grinding cannot guarantee a consistent grinding degree for each board, and burrs may not be completely removed. Summary of the Invention

[0005] This invention provides a grinding device for PCB board processing, which can solve the problem that mechanical grinding operations in the prior art mainly rely on manual labor and the speed is difficult to improve.

[0006] A PCB board grinding device includes two sets of guide housings, each set of guide housings having an opening on one side facing each other. Each set of guide housings has a rear guide plate on its rear side and a front guide plate on its front side. Each set of guide housings has a feeding opening at its upper end for the PCB board to pass through. The PCB board is fed through the feeding opening and moves along the rear and front guide plates. Each set of guide housings has a grinding mechanism inside its inner side. Each grinding mechanism includes a motor fixedly mounted on a corresponding guide housing. Each set of guide housings has two sets of cooperating drive shafts rotatably mounted on its inner side. The two sets of cooperating drive shafts are respectively equipped with a first grinding component and a second grinding component. The tops of the two sets of cooperating drive shafts are coaxially fixedly mounted with transmission components for transmitting power to each other. The output end of each set of motors is coaxially fixedly connected to the corresponding drive shaft.

[0007] As a further aspect of the present invention: the first polishing assembly includes a first hard polishing roller and a first soft brush roller coaxially fixed on a corresponding drive shaft, the first hard polishing roller being located above the first soft brush roller; the first polishing assembly is located above the second polishing assembly, the second polishing assembly including a second hard polishing roller and a second soft brush roller coaxially fixed on a drive shaft, the second hard polishing roller being located above the second soft brush roller.

[0008] As a further aspect of the present invention: each group of feeding openings is provided with an elastic guide sheet for positioning the PCB board, and a limiting plate for maintaining the position of the PCB board on both sides is fixedly provided below the rear guide plate.

[0009] As a further aspect of the present invention: the bottom of the two sets of guide housings are fitted with bases.

[0010] As a further embodiment of the present invention: the base includes two sets of adjustment seats fixedly connected to the bottom of the corresponding guide housing. One set of adjustment seats is rotatably provided with a first threaded rod and a first guide rod, and the other set of adjustment seats is threadedly connected to the first threaded rod and slidably engaged with the first guide rod.

[0011] As a further aspect of the present invention: a conveying device is provided at the bottom of the two sets of guide shells, and a conveyor belt is provided on the conveying device, and multiple sets of upright plates are fixedly arranged at equal intervals on the conveyor belt.

[0012] As a further embodiment of the present invention: both sets of guide housings are fixedly provided with bases at their lower ends, the conveying device has movable slots on both sides that cooperate with the motor, and the conveying device has second threaded rods that are threadedly connected to the bases on both sides, and the bases are slidably engaged with the sides of the conveying device.

[0013] As a further aspect of the present invention, scales that cooperate with the base are fixedly installed on both sides of the conveying device.

[0014] As a further aspect of the present invention, the two sets of guide shells are fixedly connected by a fixing plate.

[0015] As a further aspect of the present invention: the transmission assembly includes a drive wheel that is coaxially and fixedly connected to the corresponding drive shaft, and the top of each of the two sets of guide housings is rotatably provided with a drive wheel that is in transmission cooperation with the corresponding two sets of drive wheels.

[0016] The beneficial effects of this invention are:

[0017] 1. In use, the rear guide plate, front guide plate, and feeding opening of this invention provide a stable moving channel for the PCB board, ensuring that the PCB board can move accurately and smoothly under the action of gravity, avoiding placement deviations that may occur during manual operation. After the motor is started, the motor drives the transmission shaft to rotate, which in turn enables the first and second grinding components to rotate together through the transmission assembly. During the grinding process, the first grinding component first grinds one side of the PCB board to eliminate the cutting edges and burrs on the PCB board edges, while the second grinding component grinds the other side to eliminate the cutting edges and burrs on that side of the PCB board, ensuring the quality of the PCB board edge grinding. This grinding method can grind both edges at once, improving production efficiency and reducing errors caused by manual operation.

[0018] 2. In use, the operator can rotate the first or second threaded rod according to the width of the PCB board to be polished, thereby moving the adjusting seat and changing the distance between the two sets of guide shells. This allows the device to adapt to PCB boards of different widths. This enables the operator to polish the PCB board first along its length and then along its width, increasing the flexibility of the polishing process.

[0019] 3. In use, when the PCB board enters between the first and second grinding components, the first grinding component first grinds the edge of one side of the PCB board. This edge contacts the first hard grinding rollers 204 on both sides, thus grinding the edge of that side of the PCB board and eliminating the cutting edges. Under the action of gravity, the PCB board falls into the working area of ​​the first soft brush roller 205. The first soft brush roller 205 rotates, further eliminating burrs on that side of the PCB board. After the first grinding component finishes grinding one side of the PCB board, the second hard grinding roller 206 and the second soft brush roller 207 immediately grind the other side of the PCB board. The grinding principle is the same as that of the first grinding component, that is, the second hard grinding roller 206 first eliminates the cutting edges, and then the second soft brush roller 207 eliminates the burrs, thereby ensuring the grinding effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a PCB board processing grinding device provided by the present invention;

[0021] Figure 2 This invention provides a schematic diagram of the drive wheel structure of a grinding device for PCB board processing;

[0022] Figure 3 This is a schematic diagram of the longitudinal section structure of a first embodiment of a PCB board processing grinding device provided by the present invention;

[0023] Figure 4This is a schematic diagram of a second embodiment of a PCB board processing grinding device provided by the present invention;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of a second embodiment of a PCB board processing grinding device provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the third embodiment of a PCB board processing grinding device provided by the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Guide housing; 101. Rear guide plate; 102. Front guide plate; 103. Feed opening; 104. Elastic guide plate; 105. Limiting plate; 2. Grinding mechanism; 201. Motor; 202. Drive shaft; 203. Drive wheel; 204. First hard grinding roller; 205. First soft brush roller; 206. Second hard grinding roller; 207. Second soft brush roller; 208. Drive wheel; 3. Base; 301. Adjusting seat; 302. First threaded rod; 303. First guide rod; 4. Conveying device; 401. Movable groove; 402. Scale; 403. Vertical plate; 404. Second threaded rod. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0029] like Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides a grinding device for PCB board processing, comprising two sets of guide housings 1, which are arranged facing each other, and both facing sides are open. A rear guide plate 101 is provided on the rear side of each set of guide housings 1; and a front guide plate 102 is correspondingly provided on the front side of each set of guide housings 1. To facilitate the feeding of PCB boards, a feeding opening 103 is provided at the upper end of each set of guide housings 1. In actual operation, the PCB board is fed through the feeding opening 103 and moves along the guide path of the rear guide plate 101 and the front guide plate 102.

[0030] A grinding mechanism 2 is provided inside each set of guide housings 1. Specifically, each grinding mechanism 2 includes a motor 201 fixedly mounted on the corresponding guide housing 1. Two sets of cooperating drive shafts 202 are also longitudinally rotatably arranged inside each set of guide housings 1, such as... Figure 1As shown, a first grinding component and a second grinding component are respectively mounted on two sets of cooperating drive shafts 202. A transmission component is coaxially fixedly mounted on the top of each of these two sets of cooperating drive shafts 202 for transmitting power between them. The output end of each set of motors 201 is coaxially fixedly connected to the corresponding drive shaft 202. To ensure that the PCB board can be accurately fed between the first and second grinding components, an elastic guide plate 104 is provided on the inner side of each feeding opening 103. A limiting plate 105 is also fixedly mounted below the rear guide plate 101 to maintain the position of the PCB board on both sides and prevent the PCB board from tilting to one side when it falls onto the pad.

[0031] In use, the two sets of guide housings 1 are located on both sides, with their openings corresponding to each other. After the two sets of motors 201 are started, the motors 201 will drive the corresponding drive shafts 202 to rotate, which in turn will drive the other drive shaft 202 to rotate through the transmission assembly, and finally drive the first grinding assembly and the second grinding assembly to rotate. At this time, the PCB board is fed in through the feeding opening 103. Guided by the elastic guide plates 104 on both sides, the PCB board will move along the rear guide plate 101 and the front guide plate 102 to the working area of ​​the first grinding assembly and the second grinding assembly. Here, the first grinding assembly and the second grinding assembly will respectively perform fine grinding on both edges of the PCB board. After grinding, the PCB board will be output from the bottom of the two sets of guide housings 1 and fall between the two sets of limiting plates 105, and the edge grinding of the PCB board is completed.

[0032] The transmission assembly includes a drive wheel 203 coaxially and fixedly connected to the corresponding drive shaft 202, and a transmission wheel 208 rotatably disposed at the top of the two sets of guide housings 1, which drives the corresponding two sets of drive wheels 203. When one set of drive shafts 202 rotates, it drives the drive wheel 203 to rotate, which in turn drives the other set of drive wheels 203 and drive shaft 202 to rotate through the transmission wheel 208, thereby achieving the effect of the first grinding assembly and the second grinding assembly rotating together.

[0033] like Figure 2As shown, the first polishing assembly consists of a first hard polishing roller 204 and a first soft brush roller 205 coaxially fixed on the corresponding drive shaft 202, with the first hard polishing roller 204 positioned above the first soft brush roller 205. The first polishing assembly is located above the second polishing assembly, which includes a second hard polishing roller 206 and a second soft brush roller 207 coaxially fixed on the drive shaft 202. Similarly, the second hard polishing roller 206 is also positioned above the second soft brush roller 207. During the actual polishing process, the PCB board will first have one edge polished, which will then contact the first hard polishing rollers 204 on both sides, thus eliminating the cutting edges. Subsequently, under the influence of gravity, the PCB board will fall into the working area of ​​the first soft brush roller 205, further eliminating burrs. After the first polishing component finishes polishing one side of the PCB board, the second polishing component will then polish the other side of the PCB board. The principle is the same as that of the first polishing component, so it will not be described again here.

[0034] Furthermore, in the first embodiment, a base 3 is provided at the bottom of both sets of guide shells 1. With the stable support of the base 3, the two sets of guide shells 1 are fixed, thereby achieving the effect of polishing PCB boards of a specific size.

[0035] In the second embodiment, unlike the previous one, the base 3 includes two sets of adjusting seats 301 fixedly connected to the bottom of the corresponding guide housing 1. One set of adjusting seats 301 has a first threaded rod 302 and a first guide rod 303 rotatably mounted on it, while the other set of adjusting seats 301 is threadedly connected to the first threaded rod 302 and slidably engaged with the first guide rod 303. By rotating the first threaded rod 302, one set of adjusting seats 301 can be moved away from or closer to the other set, thereby adjusting the distance between the two sets of guide housings 1 to accommodate PCBs of different widths. This allows workers to first grind the PCB along its length and then along its width, increasing the flexibility of the grinding process.

[0036] In the second specific embodiment, unlike the above embodiment, a conveying device 4 is provided at the bottom of the two sets of guide shells 1. The conveying device 4 can be a conveyor belt platform on which a conveyor belt is mounted. Multiple sets of upright plates 403 are fixedly arranged at equal intervals on the conveyor belt. The polished PCB board will fall vertically into the middle of the upright plates 403 and be vertically transported under the action of the upright plates 403, thereby automatically placing it into another storage box. In addition, the two sets of guide shells 1 are also fixedly connected by a fixing plate. The polishing device in this embodiment can only polish PCB boards of a fixed size.

[0037] In the third specific embodiment, compared with the second embodiment, a base 3 is fixedly installed at the lower end of both sets of guide housings 1. Simultaneously, movable grooves 401 cooperating with the motor 201 are opened on both sides of the conveying device 4, allowing the motor 201 to move laterally along the movable grooves 401. Second threaded rods 404, threadedly connected to the base 3, are also rotatably installed on both sides of the conveying device 4, with the base 3 slidingly engaging with the side of the conveying device 4. Each set of second threaded rods 404 can control the distance between the corresponding base 3 and the conveying device 4, thereby adjusting the distance between the two sets of guide housings 1. For ease of adjustment, scales 402 cooperating with the base 3 are also fixedly installed on both sides of the conveying device 4 as a reference for adjusting the distance between the two sets of guide housings 1.

[0038] Working principle: In the preparation stage, in the second scheme of the first embodiment, the operator can adjust the distance between the two sets of guide shells 1 by rotating the first threaded rod 302 according to the width of the PCB board to be polished, thereby moving one set of adjusting seats 301 away from or closer to another set of adjusting seats 301. This allows the device to adapt to PCB boards of different widths, increasing polishing flexibility so that subsequent polishing can be done first along the length direction and then along the width direction. The third specific embodiment is based on the same principle as the above scheme and will not be described in detail here.

[0039] During the polishing stage, two sets of motors 201 on the guide housing 1 are activated. The output end of each motor 201 is coaxially and fixedly connected to the corresponding drive shaft 202. After the motor 201 is activated, it will drive the corresponding drive shaft 202 to rotate. This will in turn drive the drive wheel 203, which is coaxially and fixedly connected to it, to rotate. The drive wheel 203 then drives another set of drive wheels 203 and drive shaft 202 to rotate through the drive wheel 208, achieving the effect of the first polishing component and the second polishing component rotating together.

[0040] The PCB board to be polished is fed into the feeding opening 103 at the top of each set of guide housings 1. Guided by the elastic guide plates 104 on both sides, the PCB board will move along the rear guide plate 101 provided on the rear side and the front guide plate 102 provided on the front side of each set of guide housings 1, ensuring that the PCB board can be accurately fed between the first polishing component and the second polishing component.

[0041] After the PCB board enters between the first and second grinding components, one edge is first ground. This edge comes into contact with the first hard grinding rollers 204 on both sides, thus grinding the edge of the PCB board and eliminating cutting edges. Under the action of gravity, the PCB board falls into the working area of ​​the first soft brush roller 205. The first soft brush roller 205 rotates, further eliminating burrs on this side of the PCB board.

[0042] After the first grinding component finishes grinding one side of the PCB board, the second hard grinding roller 206 and the second soft brush roller 207 will then grind the other side of the PCB board. The grinding principle is the same as that of the first grinding component, that is, the second hard grinding roller 206 first eliminates the cutting edges, and then the second soft brush roller 207 eliminates the burrs.

[0043] In the second and third specific embodiments, after the polished PCB board is output from the bottom of the two sets of guide shells 1, it will fall vertically into the middle of the upright plate 403 on the conveyor belt of the conveyor device 4, and be vertically transported under the action of the upright plate 403, thereby automatically placing it into another storage box to realize the automatic collection of PCB board.

[0044] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A polishing device for PCB board processing, characterized by, The application relates to a PCB plate polishing device, which comprises two groups of guide housings (1), the two groups of guide housings (1) are provided with openings on one side, the rear side of each group of guide housings (1) is provided with a rear guide plate (101), the front side of each group of guide housings (1) is provided with a front guide plate (102), the upper end of each group of guide housings (1) is provided with a feeding opening (103) for feeding a PCB plate, the PCB plate is fed from the feeding opening (103) and moves along the rear guide plate (101) and the front guide plate (102), the inner side of each group of guide housings (1) is provided with a polishing mechanism (2), each group of polishing mechanisms (2) comprises a motor (201) fixedly arranged on the corresponding guide housing (1), the inner side of each group of guide housings (1) is longitudinally rotatably provided with two groups of matched transmission shafts (202), the two groups of matched transmission shafts (202) are respectively provided with first polishing assemblies and second polishing assemblies, the top of the two groups of matched transmission shafts (202) is coaxially fixedly provided with a transmission assembly for transmitting power to each other, and the output end of each group of motors (201) is coaxially fixedly connected with the corresponding transmission shaft (202).

2. The polishing apparatus for processing a PCB as claimed in claim 1, wherein The first polishing assembly comprises a first hard polishing roller (204) and a first brush soft roller (205) coaxially fixedly arranged on the corresponding transmission shaft (202), and the first hard polishing roller (204) is located above the first brush soft roller (205); the first polishing assembly is located above the second polishing assembly, the second polishing assembly comprises a second hard polishing roller (206) and a second brush soft roller (207) coaxially fixedly arranged on the transmission shaft (202), and the second hard polishing roller (206) is located above the second brush soft roller (207).

3. The polishing apparatus for processing a PCB as claimed in claim 2, wherein The inner side of each group of feeding openings (103) is provided with an elastic material guiding piece (104) for positioning the PCB plate, and the lower side of the rear guide plate (101) is fixedly provided with a limiting plate (105) for maintaining the positions of the two sides of the PCB plate.

4. The polishing apparatus for processing a PCB as claimed in claim 3, wherein The bottom of the two groups of guide housings (1) is matched with a base (3).

5. The polishing apparatus for processing a PCB as claimed in claim 4, wherein The base (3) comprises two groups of adjusting bases (301) fixedly connected with the bottom of the corresponding guide housing (1), the first screw rod (302) and the first guide rod (303) are rotatably arranged on one group of adjusting bases (301), the other group of adjusting bases (301) is threadedly connected with the first screw rod (302) and is slidingly matched with the first guide rod (303).

6. The polishing apparatus for processing a PCB as claimed in claim 3, wherein The bottom of the two groups of guide housings (1) is provided with a conveying device (4), the conveying device (4) is matched with a conveying belt, and a plurality of vertical plates (403) are equidistantly fixedly arranged on the conveying belt.

7. The polishing apparatus for processing a PCB board as claimed in claim 6, wherein The bottom of the two groups of guide housings (1) is fixedly provided with the base (3), the two sides of the conveying device (4) are provided with movable grooves (401) matched with the motor (201), the two sides of the conveying device (4) are rotatably provided with second screw rods (404) threadedly connected with the base (3), and the base (3) is slidingly matched with the side of the conveying device (4).

8. The polishing apparatus for processing a PCB as claimed in claim 7, wherein The conveying device (4) is fixedly provided with a scale (402) matched with the base (3) on both sides.

9. The polishing apparatus for processing a PCB as claimed in claim 6, wherein The two groups of guide housings (1) are fixedly connected through a fixed plate.

10. The polishing apparatus for processing a PCB board as claimed in claim 1, wherein, The transmission assembly comprises a driving wheel (203) coaxially and fixedly connected with a corresponding transmission shaft (202), and a transmission wheel (208) drivingly matched with the two groups of driving wheels (203) is rotationally arranged at the top of the two groups of guide housings (1).

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