Film pressing wheel

Abstract

The invention provides a film pressing wheel which comprises a pipe body, a heat source arranged in the pipe body and a rubber face coated on the outer surface of the pipe body. Both the rubber face and the pipe body are controlled by an outside electric eye, both the electric eye and a heating rod are regulated and controlled by an electric control box, multiple uniformly-distributed longitudinally-penetrating through holes are formed in the pipe wall of the pipe body, a temperature controller electric eye for controlling temperature of copper pipes and the rubber face is arranged, the copper pipes and copper woven nets are arranged in the penetrating through holes, the copper pipes are filled with liquid-state water, and the rubber face on the outer surface of the pipe body is controlled by the temperature controller electric eye. The film pressing wheel is soft in temperature change, low in defective percentage, high in pressed film yield and safety and convenient in temperature regulation, and points on the rubber face are stable in temperature and small in temperature difference.

Description

technical field [0001] The invention relates to the field of electronic processing, in particular to a pressure film wheel. Background technique [0002] With the advent of the electronic industry era, the equipment for producing electronic products and manufacturing parts is booming. Laminator is a device that hot-presses a specific PCB (printed circuit board) dry film onto a PCB. The dry film to be pressed is erected on the laminator equipment. Only the pressing wheel is pressed against each other, relying on the pressure and temperature of the pressing wheel to make the dry film closely adhere to the surface of the PCB. [0003] The lamination process requires that the dry film pressed on the surface of the entire PCB board be neat and uniform without any air bubbles or wrinkles. Consistent with the above, the thickness, hardness and temperature of the rubber layer of the lamination wheel are appropriate. Only by doing the above points can the quality of the lamination ...

AI Technical Summary

Problems solved by technology

[0004] At present, the heat-pressing film wheels on the PCB film lamination equipment are all placed with heating elements from the inner hole, and the temperature difference between each point on the glue surface is as large as 6°C to 15°C. The temperature drop is too large, which affects the lamination effect.

The lamination wheels of various brands of lamination machines used by PCB companies have common shortcomings. When the temperature is unstable or the drop is large, it will seriously affect the bonding of the film and the circuit board surface, resulting in a large loss of bad board surface.

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