Pre-pressed board grinding device for PCB

Abstract

The invention discloses a pre-pressed board grinding device for a PCB. The pre-pressed board grinding device is characterized by comprising a base, a Y-axis feeding mechanism, an X-axis feeding mechanism, a placement die, a portal, a cylinder, a guide rod, an upper supporting plate, a lower supporting plate, a pre-pressed board grinding mechanism and a motor, wherein the PCB is placed in the placement die; the cylinder moves downwards to drive the pre-pressed board grinding mechanism to contact with the PCB; the motor drives the pre-pressed board grinding mechanism to carry out board grinding on the PCB; the Y-axis feeding mechanism and the X-axis feeding mechanism drive the PCB to carry out transversal and longitudinal movement, and then board grinding for the PCB is completed. The device is simple in structure, and capable of continuously and uniformly conveying a grinding material and enabling the grinding material to uniformly contact with the PCB through elastic pre-pressing, thereby improving the uniformity of the board grinding.

Description

Technical field [0001] The invention relates to a mechanical device, in particular to a pre-pressing type PCB board grinding device. Background technique [0002] Printed circuit board, also known as PCB board, is the support of electronic components and the carrier of electrical connection of electronic components. The production process of PCB board is complicated. Before green oil covering, surface treatment must be carried out, and surface treatment is usually There are two types, one is physical polishing plate, and the other is chemical polishing plate. [0003] A. Physical grinding plate: The physical grinding plate is generally polished by grinding rollers and volcanic ash to roughen the surface. The basic principle is to use volcanic ash as an abrasive to grind the PCB board with the help of the high-speed rotation of the grinding reel, remove the impurities and oxides on the copper surface, and increase the bonding force between the copper board and the green oil. [0004...

AI Technical Summary

Problems solved by technology

[0005] Because the solution after the chemical grinding plate reaction is easy to cause environmental pollution, many manufacturers use physical grinding plates, but the length of the grinding wheel of the existing physical grinding plate equipment is long, and it is difficult to evenly contact the abrasive with the PCB board. As a result, the effect of grinding the board is poor. At the same time, due to the presence of some coarse abrasives, the copper layer of the PCB board is prone to damage.

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