A PCB plate grinding device and a plate grinding production line

By designing equipment and automated production lines that can grind both sides of a PCB board simultaneously, the problems of low efficiency of existing equipment and high difficulty of manual operation have been solved, realizing efficient and automated PCB board production and meeting the needs of mass production.

CN224390744UActive Publication Date: 2026-06-23HUIZHOU LIANDAJIN ELECTRONICS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUIZHOU LIANDAJIN ELECTRONICS CO LTD
Filing Date
2025-07-29
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing PCB board grinding equipment is inefficient and cannot meet the needs of mass production. Manual flipping is difficult, the equipment has limited functions, and the transfer efficiency is low, which affects the overall production efficiency.

Method used

Design a PCB board grinding equipment, which adopts a first grinding mechanism and a second grinding mechanism that can grind both sides of the PCB board simultaneously. Combined with a first grinding head and a roller brush assembly, it realizes multiple grinding and dust removal operations, and forms an automated production line with board feeding, testing and board receiving equipment.

Benefits of technology

It improves the efficiency of PCB board grinding, reduces the difficulty and fatigue of workers, realizes the automated production of PCB boards, meets the needs of mass production, and improves production quality and efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to the technical field of PCB board production, disclose a kind of PCB board grinding equipment, grinding production line, the PCB board grinding equipment includes first grinding mechanism, to carry out grinding to the A face of PCB board;And second grinding mechanism, movably set in the first grinding mechanism upper, to carry out grinding to the B face of PCB board;Wherein, the A face is one side of PCB board, the B face is another opposite side of PCB board;And the first grinding mechanism and the second grinding mechanism are all combined grinding mechanism to the twice grinding of PCB board, and the utility model provides a kind of PCB board grinding equipment, not only can effectively improve the efficiency of PCB board grinding, and effectively improve the overall production efficiency of PCB board, to meet the demand of mass production of PCB board, and effectively reduce worker operation difficulty and fatigue intensity.
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Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing technology, specifically to a PCB board grinding equipment and grinding production line. Background Technology

[0002] PCB grinding is a process that involves grinding the surface of a PCB after drilling to remove burrs and improve the flatness and smoothness of the PCB surface.

[0003] In existing technologies, PCB grinding equipment is generally a single-sided grinding structure. After grinding one side of the PCB, it needs to be flipped over to continue grinding the other side. This type of grinding equipment often has the following drawbacks:

[0004] 1. Grinding one side of the PCB board must be completed before grinding the other side. This not only results in low grinding efficiency, which cannot meet the needs of mass production of PCB boards, but also requires manual operation for flipping the PCB board. The operation is difficult and labor-intensive for workers, which further limits the production efficiency of PCB boards and makes it difficult to achieve mass production of PCB boards.

[0005] 2. The grinding equipment can only perform grinding operations. After grinding both sides of the PCB board, it needs to be transferred to the corresponding equipment for dust removal, edge grinding and other processing. Not only is the equipment limited in function, but the transfer efficiency of the PCB board directly affects the overall production efficiency of the PCB board. Utility Model Content

[0006] To address the shortcomings of the existing technology, this utility model provides a PCB board grinding device, which combines a first grinding mechanism and a second grinding mechanism capable of simultaneously grinding both sides of the PCB board. This not only effectively improves the grinding efficiency of the PCB board, thereby significantly increasing the overall production efficiency of the PCB board to meet the needs of mass production, but also eliminates the need for manual flipping, effectively reducing the difficulty and fatigue of workers. Furthermore, both the first and second grinding mechanisms are combined grinding mechanisms capable of multiple grinding operations on both sides of the PCB board, further improving grinding efficiency and simultaneously performing dust removal operations, thus effectively improving the quality of the ground PCB board.

[0007] This utility model also provides a PCB board grinding production line, which combines the above-mentioned PCB board grinding equipment with board feeding equipment, testing equipment and board receiving equipment. It can not only automatically complete the grinding, dust removal and testing operations of PCB boards, effectively improving the efficiency and quality of PCB board production, but also automatically feed and receive PCB boards to replace manual operation, effectively reducing the difficulty and fatigue of workers and saving labor costs.

[0008] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0009] In a first aspect, this utility model provides a PCB board grinding device, comprising:

[0010] The first grinding mechanism is used to grind side A of the PCB board;

[0011] And a second grinding mechanism, which is movably disposed above the first grinding mechanism, for grinding the B side of the PCB board;

[0012] Wherein, side A is one side of the PCB board, and side B is the other opposite side of the PCB board;

[0013] Furthermore, both the first grinding mechanism and the second grinding mechanism are combined grinding mechanisms that perform multiple grinding operations on both sides of the PCB board.

[0014] As one preferred embodiment, the first grinding plate mechanism includes:

[0015] The first grinding head grinding plate assembly is located at the feeding end of the mechanism and is used to grind the A side of the PCB board once.

[0016] The first roller brush grinding plate assembly is located at the discharge end of the mechanism and is used to perform secondary grinding and dust removal on the A side of the PCB board after the first grinding.

[0017] As one preferred embodiment, the first grinding head / grind plate assembly includes:

[0018] The first grinding head unit is used to grind side A of the PCB board once;

[0019] And a first grinding head drive unit, the drive end of which is connected to the first grinding head unit to drive the first grinding head unit to perform a grinding operation on side A of the PCB board.

[0020] As one preferred embodiment, the first roller brush assembly includes:

[0021] The first roller brush unit is used to perform secondary grinding and dust removal on the A side of the PCB board after the first grinding.

[0022] And a first roller brush driving unit, the driving end of which is connected to the first roller brush unit, to drive the first roller brush unit to perform secondary grinding and dust removal on the A side of the PCB board after the first grinding.

[0023] As one preferred embodiment, the second grinding plate mechanism includes:

[0024] The second grinding head grinding plate assembly is located at the feeding end of the mechanism and is used to grind the B side of the PCB board once.

[0025] The second roller brush grinding plate assembly is located at the discharge end of the mechanism and is used to perform secondary grinding and dust removal on the B side of the PCB board after the first grinding.

[0026] And a grinding plate mechanism drive assembly, connected to the second grinding head grinding plate assembly and the second roller brush grinding plate assembly, for driving the second grinding head grinding plate assembly and the second roller brush grinding plate assembly to move closer to or away from the first grinding plate mechanism.

[0027] As one preferred embodiment, the second grinding head and grinding plate assembly includes:

[0028] The second grinding head unit is used to grind the B side of the PCB board once;

[0029] And a second grinding head drive unit, the drive end of which is connected to the second grinding head unit to drive the second grinding head unit to perform a grinding operation on the B side of the PCB board.

[0030] As one preferred embodiment, the second roller brush assembly includes:

[0031] The second roller brush unit is used to perform secondary grinding and dust removal on the B side of the PCB board after the first grinding.

[0032] And a second roller brush drive unit, the drive end of which is connected to the second roller brush unit, to drive the second roller brush unit to perform secondary grinding and dust removal on the B side of the PCB board after the first grinding.

[0033] As a preferred embodiment, the PCB grinding equipment further includes a side grinding mechanism, which is disposed adjacent to the discharge end of the first grinding mechanism and the second grinding mechanism, for grinding the side of the PCB board.

[0034] As one preferred embodiment, the side grinding plate mechanism includes:

[0035] The first and second side grinding plate assemblies, which are arranged opposite to each other and spaced apart, are used to grind the two opposite sides of the PCB board simultaneously.

[0036] An auxiliary board feeding assembly is provided between the first side grinding plate assembly and the first side grinding plate assembly to assist in the feeding of the PCB board.

[0037] Secondly, this utility model provides a PCB board grinding production line, comprising:

[0038] The PCB grinding equipment described above is used to grind PCBs.

[0039] A board feeding device is arranged adjacent to the feed end of the PCB board grinding device to realize the feeding and conveying of the PCB board to be ground;

[0040] The testing equipment is located adjacent to the discharge end of the PCB grinding equipment to test the smoothness and flatness of the PCB after grinding.

[0041] And a board collecting device, which is set up adjacent to the discharge end of the testing device, is used to collect the PCB boards that have been tested in separate sections.

[0042] In summary, this utility model has at least the following advantages:

[0043] 1. The PCB grinding equipment provided by this utility model combines a first grinding mechanism and a second grinding mechanism capable of simultaneously grinding both sides of the PCB board. This not only effectively improves the efficiency of PCB board grinding, thereby increasing the overall production efficiency of the PCB board to meet the needs of mass production, but also eliminates the need for manual flipping, effectively reducing the difficulty and fatigue of workers. Furthermore, both the first and second grinding mechanisms are combined grinding mechanisms capable of multiple grinding operations on both sides of the PCB board, further improving grinding efficiency and simultaneously performing PCB board dust removal, thus effectively improving the quality of the ground PCB board.

[0044] 2. The PCB grinding production line provided by this utility model combines the above-mentioned PCB grinding equipment with board feeding equipment, testing equipment and board receiving equipment. It can not only automatically complete the grinding, dust removal and testing operations of PCB boards, effectively improving the efficiency and quality of PCB board production, but also automatically feed and receive PCB boards to replace manual operation, effectively reducing the difficulty and fatigue of workers and saving labor costs. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the PCB board grinding equipment in this embodiment of the present invention.

[0046] Figure 2 This is a schematic diagram of the structure of the first grinding plate mechanism in an embodiment of this utility model.

[0047] Figure 3 This is a schematic diagram of the structure of the second grinding plate mechanism in an embodiment of this utility model.

[0048] Figure 4 This is a schematic diagram of the side grinding plate mechanism in an embodiment of this utility model.

[0049] Figure 5 This is a schematic diagram of the overall structure of the PCB board grinding production line in this embodiment of the present invention.

[0050] Figure label:

[0051] 10. PCB board grinding equipment;

[0052] 100. First grinding plate mechanism; 110. First grinding head grinding plate assembly; 111. First grinding head unit; 112. First grinding head drive unit; 120. First roller brush grinding plate assembly; 121. First roller brush unit; 122. First roller brush drive unit;

[0053] 200. Second grinding plate mechanism; 210. Second grinding head grinding plate assembly; 211. Second grinding head unit; 212. Second grinding head drive unit; 220. Second roller brush grinding plate assembly; 221. Second roller brush unit; 222. Second roller brush drive unit; 230. Grinding plate mechanism drive assembly;

[0054] 300. Side grinding plate mechanism; 310. First side grinding plate assembly; 320. Second side grinding plate assembly; 330. Auxiliary feeding plate assembly;

[0055] 20. Plate feeding equipment;

[0056] 30. Testing equipment;

[0057] 40. Plate collecting equipment. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0059] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0060] Example 1:

[0061] Please see the appendix Figure 1 The PCB grinding device 10 of this utility model includes a first grinding mechanism 100 for grinding side A of the PCB board, and a second grinding mechanism 200 movably disposed above the first grinding mechanism 100 for grinding side B of the PCB board. Side A is one side of the PCB board, and side B is the other opposite side of the PCB board; both the first grinding mechanism 100 and the second grinding mechanism 200 are combined grinding mechanisms that perform multiple grinding operations on both sides of the PCB board.

[0062] The PCB grinding equipment 10 in this embodiment combines a first grinding mechanism 100 and a second grinding mechanism 200 capable of simultaneously grinding both sides of the PCB board. This not only effectively improves the efficiency of PCB grinding, thereby increasing the overall production efficiency of the PCB board to meet the needs of mass production, but also eliminates the need for manual flipping, effectively reducing the difficulty and fatigue of workers and saving labor costs. Furthermore, both the first grinding mechanism 100 and the second grinding mechanism 200 are combined grinding mechanisms capable of multiple grinding operations on both sides of the PCB board, further improving grinding efficiency and simultaneously performing PCB board dust removal, thus effectively improving the quality of the ground PCB board.

[0063] Please see the appendix Figure 1 In some embodiments, the first grinding mechanism 100 includes a first grinding head grinding assembly 110 disposed at the feeding end of the mechanism for grinding the A side of the PCB board once, and a first roller brush grinding assembly 120 disposed at the discharging end of the mechanism for grinding and dust removal of the A side of the PCB board after the first grinding.

[0064] Please refer to the appendix for further details. Figure 2 The first grinding head assembly 110 includes a first grinding head unit 111 for grinding surface A of the PCB board, and a first grinding head drive unit 112 connected to the first grinding head unit 111 for driving the first grinding head unit 111 to grind surface A of the PCB board. Preferably, the first grinding head unit 111 is a sanding disc unit disposed on the top or side of the mechanism; and when the sanding disc unit is disposed on the top of the mechanism, the first grinding head drive unit 112 is selected as a motor drive unit, and when the sanding disc unit is disposed on the top side of the mechanism, the first grinding head drive unit 112 is selected as a cylinder drive unit.

[0065] The first roller brush grinding assembly 120 includes a first roller brush unit 121 for secondary grinding and dust removal of the A-side of the PCB board after primary grinding, and a first roller brush drive unit 122 connected to the first roller brush unit 121 for driving the first roller brush unit 121 to perform secondary grinding and dust removal on the A-side of the PCB board after primary grinding. Preferably, the first roller brush unit 121 is an abrasive filament roller brush, a nylon filament roller brush, or a horsehair roller brush, and the number is at least two sets; the first roller brush drive unit 122 is a motor drive unit.

[0066] Please see the appendix Figure 1 In some embodiments, the second grinding mechanism 200 includes a second grinding head assembly 210 disposed at the mechanism feed end for primary grinding of the B-side of the PCB board; a second roller brush assembly 220 disposed at the mechanism discharge end for secondary grinding and dust removal of the B-side of the PCB board after primary grinding; and a grinding mechanism drive assembly 230 connected to the second grinding head assembly 210 and the second roller brush assembly 220 for driving the second grinding head assembly 210 and the second roller brush assembly 220 closer to or further away from the first grinding mechanism 100. Preferably, the grinding mechanism drive assembly 230 is a cylinder drive assembly.

[0067] Please refer to the appendix for further details. Figure 3 The second grinding head assembly 210 includes a second grinding head unit 211 for grinding the B-side of the PCB board, and a second grinding head drive unit 212 connected to the second grinding head unit 211 for driving the second grinding head unit 211 to grind the B-side of the PCB board. Preferably, the second grinding head unit 211 is disposed opposite to the first grinding head unit 111 and has the same structure, and the structure of the second grinding head drive unit 212 is the same as that of the first grinding head drive unit 112. Therefore, the specific structures of the second grinding head unit 211 and the second grinding head drive unit 212 will not be described in detail here.

[0068] Furthermore, the second roller brush grinding assembly 220 includes a second roller brush unit 221 for secondary grinding and dust removal of the B-side of the PCB board after the first grinding, and a second roller brush drive unit 222 connected to the second roller brush unit 221 for driving the second roller brush unit 221 to perform secondary grinding and dust removal of the B-side of the PCB board after the first grinding. Similarly, the specific structure of the second roller brush grinding assembly 220 is the same as that of the first roller brush grinding assembly 120, and will not be described again here.

[0069] When the PCB board is manually or using auxiliary tools to feed into the gap between the first grinding mechanism 100 and the second grinding mechanism 200, the grinding head grinding assembly in the first grinding mechanism 100 and the second grinding mechanism 200 is activated first to grind both sides of the PCB board simultaneously. Then the PCB board continues to be pushed forward, and the roller brush grinding assembly set at the discharge end of the mechanism is activated to simultaneously grind and remove dust from both sides of the PCB board after the first grinding.

[0070] Please see the appendix Figure 1 In some embodiments, the PCB grinding equipment 10 further includes a side grinding mechanism 300 disposed adjacent to the discharge end of the first grinding mechanism 100 and the second grinding mechanism 200, for grinding the sides of the PCB board. Please refer to the appendix for further details. Figure 4 The side grinding mechanism 300 includes a first side grinding assembly 310 and a second side grinding assembly 320 arranged opposite to and spaced apart from each other, and an auxiliary feeding assembly 330 disposed between the first side grinding assembly 310 and the second side grinding assembly 320. The first and second side grinding assemblies 310 and 320 simultaneously grind the two opposite sides of the PCB board to remove burrs from the sides, thereby effectively improving the quality of PCB board production. Preferably, both the first and second side grinding assemblies 310 and 320 are roller grinding assemblies. The auxiliary feeding assembly 330 assists in conveying the PCB board to facilitate the grinding of the PCB board sides. Preferably, the auxiliary feeding assembly 330 is a conveyor belt assembly.

[0071] The PCB grinding equipment 10 in this embodiment can not only grind both sides of the PCB board simultaneously, effectively improving the efficiency and quality of PCB board grinding, but also grind the sides of the PCB board, thereby further improving the overall production quality of the PCB board.

[0072] Example 2:

[0073] Please see the appendix Figure 5 The PCB grinding production line in this embodiment includes a PCB grinding device 10 as described in Embodiment 1 for grinding PCBs, a feeding device 20 disposed adjacent to the feeding end of the PCB grinding device 10 for feeding and conveying the PCBs to be ground, a testing device 30 disposed adjacent to the discharging end of the PCB grinding device 10 for testing the smoothness and flatness of the ground PCBs, and a receiving device 40 disposed adjacent to the discharging end of the testing device 30 for partitioning and storing the tested PCBs. Preferably, the feeding device 20, the testing device 30, and the receiving device 40 are all devices that can achieve the corresponding functions in the prior art, and are not the main inventive point of this technical solution, so they will not be described in detail here.

[0074] The PCB grinding production line in this embodiment combines the PCB grinding equipment 10 of Embodiment 1 with the board feeding equipment 20, the testing equipment 30, and the board receiving equipment 40. It can not only automatically complete the grinding, dust removal, and testing operations of PCB boards, effectively improving the efficiency and quality of PCB board production, but also automatically feed and receive PCB boards to replace manual operations, effectively reducing the difficulty and fatigue of workers and saving labor costs.

[0075] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0077] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0078] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0079] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A PCB board grinding device, characterized in that, include: The first grinding mechanism (100) is used to grind the A side of the PCB board; And a second grinding mechanism (200), which is movably disposed above the first grinding mechanism (100), for grinding the B side of the PCB board; Wherein, side A is one side of the PCB board, and side B is the other opposite side of the PCB board; Both the first grinding mechanism (100) and the second grinding mechanism (200) are combined grinding mechanisms that perform multiple grinding operations on both sides of the PCB board.

2. The PCB board grinding equipment according to claim 1, characterized in that, The first grinding plate mechanism (100) includes: The first grinding head grinding plate assembly (110) is set at the feeding end of the mechanism and is used to grind the A side of the PCB board once. The first roller brush grinding plate assembly (120) is set at the discharge end of the mechanism to perform secondary grinding and dust removal on the A side of the PCB board after the first grinding.

3. The PCB board grinding equipment according to claim 2, characterized in that, The first grinding head and grinding plate assembly (110) includes: The first grinding head unit (111) is used to grind the A side of the PCB board once; And a first grinding head drive unit (112), the drive end of which is connected to the first grinding head unit (111) to drive the first grinding head unit (111) to perform a grinding on the A side of the PCB board.

4. The PCB board grinding equipment according to claim 2, characterized in that, The first roller brush abrasive plate assembly (120) includes: The first roller brush unit (121) is used to perform secondary grinding and dust removal on the A side of the PCB board after the first grinding. And a first roller brush drive unit (122), the drive end of which is connected to the first roller brush unit (121) to drive the first roller brush unit (121) to perform secondary grinding and dust removal on the A side of the PCB board after the first grinding.

5. The PCB board grinding equipment according to claim 1, characterized in that, The second grinding plate mechanism (200) includes: The second grinding head grinding plate assembly (210) is set at the feeding end of the mechanism and is used to grind the B side of the PCB board once. The second roller brush grinding plate assembly (220) is set at the discharge end of the mechanism to perform secondary grinding and dust removal on the B side of the PCB board after the first grinding. And a grinding plate mechanism drive assembly (230), connected to the second grinding head grinding plate assembly (210) and the second roller brush grinding plate assembly (220), for driving the second grinding head grinding plate assembly (210) and the second roller brush grinding plate assembly (220) to approach or move away from the first grinding plate mechanism (100).

6. The PCB board grinding equipment according to claim 5, characterized in that, The second grinding head and grinding plate assembly (210) includes: The second grinding head unit (211) is used to grind the B side of the PCB board once; And a second grinding head drive unit (212), the drive end of which is connected to the second grinding head unit (211) to drive the second grinding head unit (211) to perform a grinding on the B side of the PCB board.

7. The PCB board grinding equipment according to claim 5, characterized in that, The second roller brush abrasive plate assembly (220) includes: The second roller brush unit (221) is used to perform secondary grinding and dust removal on the B side of the PCB board after the first grinding. And a second roller brush drive unit (222), the drive end of which is connected to the second roller brush unit (221) to drive the second roller brush unit (221) to perform secondary grinding and dust removal on the B side of the PCB board after the first grinding.

8. The PCB board grinding equipment according to claim 1, characterized in that, It also includes a side grinding mechanism (300), which is disposed adjacent to the discharge end of the first grinding mechanism (100) and the second grinding mechanism (200) for grinding the side of the PCB board.

9. The PCB board grinding equipment according to claim 8, characterized in that, The side grinding plate mechanism (300) includes: The first side grinding plate assembly (310) and the second side grinding plate assembly (320) are arranged opposite to each other and spaced apart, and are used to grind the two opposite sides of the PCB board simultaneously. An auxiliary board feeding assembly (330) is provided between the first side grinding plate assembly (310) and the first side grinding plate assembly (310) for auxiliary conveying of the PCB board.

10. A PCB board grinding production line, characterized in that, include: The PCB board grinding equipment (10) as described in any one of claims 1-9 is used to grind PCB boards; The board feeding device (20) is arranged adjacent to the feeding end of the PCB board grinding device (10) to realize the feeding and conveying of the PCB board to be ground; The testing equipment (30) is set up adjacent to the discharge end of the PCB board grinding equipment (10) to test the smoothness and flatness of the PCB board after grinding. And a board collecting device (40) is set up adjacent to the discharge end of the test device (30) to collect the PCB boards after the test is completed in sections.