A deburring grinding plate device used in PCB manufacturing process

Abstract

This utility model relates to a deburring and grinding device for PCB manufacturing. From board entry to board exit, it comprises, in sequence, a first grinding machine (1), a second grinding machine (2), a primary pressurized water washing machine (3), an ultrasonic water washing machine (4), a countercurrent rinsing machine (5), an ultra-high pressure water washing machine (6), a secondary pressurized water washing machine (7), and a combined dryer (8). The first grinding machine (1) and the second grinding machine (2) are both equipped with a combination of FH mold brushes and needle brushes, with each set of brushes having a mesh size of 240 mesh FH mold brush + 240 mesh FH mold brush + 320 mesh needle brush + 500 mesh needle brush. The advantages of this utility model are increased deburring effect at the orifice, prevention of hole blockage caused by brush debris, and improved orifice burr grinding capability.

Description

Technical Field

[0001] This utility model relates to the field of PCB deburring technology, and in particular to a deburring grinding device used in the PCB manufacturing process. Background Technology

[0002] In the drilling process of PCB manufacturing, burrs are generated due to the difference in ductility between the copper layer and the substrate during the cutting process. The height difference of the lamination pattern, which causes the bottom to be suspended and generate burrs, is an industry problem. Drilling burrs cause abnormal hole diameter and burrs after electroplating and scrap.

[0003] Currently, deburring methods generally include horizontal grinding or manual grinding. The types of brushes used in horizontal grinding include ceramic, non-woven fabric, and needle brushes. However, the adhesion and deburring effects of different types of brushes vary greatly, and brush debris can cause electroplating clogging. Utility Model Content

[0004] The purpose of this invention is to solve the problem of burrs on the drilling openings caused by unevenness on the surface of the circuit board in the existing circuit board industry. It provides a deburring and grinding device for use in the PCB manufacturing process, which can increase the deburring effect of the openings, avoid the blockage caused by brush debris falling off, and improve the burr grinding capability of the openings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A deburring and grinding device for PCB manufacturing includes a first grinding machine, a second grinding machine, a primary pressurized water washing machine, an ultrasonic water washing machine, a countercurrent rinsing machine, an ultra-high pressure water washing machine, a secondary pressurized water washing machine, and a combined dryer connected in sequence. The first grinding machine and the second grinding machine are equipped with a combination of FH mold brushes and needle brushes, and the mesh size combination of each brush group is 240 mesh FH mold brush + 240 mesh FH mold brush + 320 mesh needle brush + 500 mesh needle brush.

[0007] Furthermore, the FH mold brush is made of silicon carbide, and the needle brush is made of nylon, in order to improve the burr grinding capability of the orifice by using different materials and brush grit combinations.

[0008] Furthermore, both the first and second grinding machines are 4-axis automatic grinding brush machines.

[0009] Furthermore, the countercurrent rinsing machine includes a first countercurrent rinsing machine, a second countercurrent rinsing machine, and a third countercurrent rinsing machine, and the first, second, and third countercurrent rinsing machines are connected in series. The first countercurrent rinsing machine is located on the side closer to the ultrasonic water washing machine, and the third countercurrent rinsing machine is located on the side closer to the ultra-high pressure water washing machine.

[0010] Furthermore, the ultra-high pressure washing machine includes a first ultra-high pressure washing machine and a second ultra-high pressure washing machine, and the first and second ultra-high pressure washing machines are connected in series, with the second ultra-high pressure washing machine located on the side closer to the secondary pressurized washing machine.

[0011] Furthermore, a suction mechanism is provided between the secondary pressurized washing machine and the combined dryer to absorb the moisture from the PCB board after washing before it enters the dryer for drying.

[0012] In the technical solution of this utility model, by optimizing the configuration of the deburring brush type, the deburring effect after drilling is improved, the blockage caused by brush debris falling off is reduced, the ability to grind the burrs at the hole opening is enhanced, the problem of burrs at the hole opening is effectively avoided, the defect rate of burrs is reduced by 75%, and the economic effect is significant. Attached Figure Description

[0013] Figure 1 This is a flowchart illustrating the structure of the deburring and grinding device for PCB manufacturing according to this utility model. Detailed Implementation

[0014] Example

[0015] To make this utility model clearer, the following description, in conjunction with the accompanying drawings, further illustrates a deburring and grinding device for use in the PCB manufacturing process. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0016] See Figure 1 A deburring and grinding device for use in PCB manufacturing process, characterized in that:

[0017] The equipment, from the inlet to the outlet, includes a first grinding machine 1, a second grinding machine 2, a primary pressurized water washing machine 3, an ultrasonic water washing machine 4, a countercurrent rinsing machine 5, an ultra-high pressure water washing machine 6, a secondary pressurized water washing machine 7, and a combined dryer 8.

[0018] Both the first grinding machine 1 and the second grinding machine 2 are 4-axis automatic grinding brush machines;

[0019] The countercurrent rinsing machine 5 includes a first countercurrent rinsing machine 51, a second countercurrent rinsing machine 52 and a third countercurrent rinsing machine 53, and the first, second and third countercurrent rinsing machines are connected in series. The first countercurrent rinsing machine 51 is located on the side closer to the ultrasonic water washing machine 4, and the third countercurrent rinsing machine 53 is located on the side closer to the ultra-high pressure water washing machine 6.

[0020] The ultra-high pressure washing machine 6 includes a first ultra-high pressure washing machine 61 and a second ultra-high pressure washing machine 62, and the first and second ultra-high pressure washing machines are connected in series. The second ultra-high pressure washing machine 62 is located on the side close to the secondary pressurized washing machine 7.

[0021] A suction mechanism 9 is provided between the secondary pressurized water washing machine 7 and the combined dryer 8 to absorb the moisture from the PCB board after water washing before it enters the dryer for drying.

[0022] According to the above device, the deburring and grinding process follows these steps: plate feeding → first grinding section → second grinding section → pressurized water washing → ultrasonic water washing → countercurrent water washing → ultra-high pressure water washing → pressurized water washing → drying → plate discharge.

[0023] In this embodiment, the first grinding machine 1 and the second grinding machine 2 are both equipped with a combination of FH mold brushes and needle brushes, and the mesh size combination of each set of brushes is 240 mesh FH mold brush + 240 mesh FH mold brush + 320 mesh needle brush + 500 mesh needle brush.

[0024] In this embodiment, the FH mold brush is made of silicon carbide and the needle brush is made of nylon, which is used to improve the grinding ability of the orifice for different materials and brush grit combinations.

[0025] This utility model uses a combination of FH mold brush and needle brush to improve the deburring and burr grinding ability, which can effectively solve the problem of burrs at the orifice and reduce the burr defect rate by 75%, reducing the defect rate from 0.43% to 0.108%. Based on a monthly production of 30,000 square meters, the actual monthly revenue is calculated.

[0026] 30,000 square meters / month * 0.6% * 1,600 yuan / square meter * 60% = 92,736 yuan / month;

[0027] Actual annual income: 92,736 yuan / month * 12 months = 1,112,832 yuan / year.

[0028] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A deburring and grinding device for use in PCB manufacturing process, characterized in that: The process from board entry to board exit includes a first grinding machine (1), a second grinding machine (2), a primary pressurized water washing machine (3), an ultrasonic water washing machine (4), a countercurrent rinsing machine (5), an ultra-high pressure water washing machine (6), a secondary pressurized water washing machine (7), and a combined dryer (8). The first grinding machine (1) and the second grinding machine (2) are equipped with a combination of FH mold brushes and needle brushes, and the mesh size of each brush combination is 240 mesh FH mold brush + 240 mesh FH mold brush + 320 mesh needle brush + 500 mesh needle brush.

2. The deburring and grinding device for PCB manufacturing process according to claim 1, characterized in that: The FH mold brush is made of silicon carbide, and the needle brush is made of nylon.

3. The deburring and grinding device for PCB manufacturing process according to claim 1 or 2, characterized in that: The first grinding machine (1) and the second grinding machine (2) are both 4-axis automatic grinding brush machines.

4. The deburring and grinding device for PCB manufacturing process according to claim 1 or 2, characterized in that: The countercurrent rinsing machine (5) includes a first countercurrent rinsing machine (51), a second countercurrent rinsing machine (52) and a third countercurrent rinsing machine (53), and the first, second and third countercurrent rinsing machines are connected in series. The first countercurrent rinsing machine (51) is set on the side close to the ultrasonic water washing machine (4), and the third countercurrent rinsing machine (53) is set on the side close to the ultra-high pressure water washing machine (6).

5. The deburring and grinding device for PCB manufacturing process according to claim 1 or 2, characterized in that: The ultra-high pressure washing machine (6) includes a first ultra-high pressure washing machine (61) and a second ultra-high pressure washing machine (62), and the first and second ultra-high pressure washing machines are connected in series. The second ultra-high pressure washing machine (62) is located on the side close to the secondary pressurized washing machine (7).

6. The deburring and grinding device for PCB manufacturing process according to claim 1 or 2, characterized in that: A suction drying mechanism (9) is provided between the secondary pressurized washing machine (7) and the combined dryer (8).

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