An ultra-thin high-voltage resistant metallized film evaporation equipment

Abstract

The invention discloses an ultra-thin high-voltage resistant metallized film evaporation equipment, which includes an evaporation mechanism for heating and evaporating metals, and the evaporation mechanism includes several evaporation boats; and is used for transporting evaporation materials into the evaporation mechanism A wire feeding mechanism for metal wire, the wire feeding mechanism includes a main drive shaft and several transmission assemblies driven by the main drive shaft, each of the transmission assemblies includes a wire feed wheel; and is used to control the feeding The control mechanism of the wire feeding rate of the wire mechanism, each of the control mechanisms includes a signal collector for detecting the evaporation rate of the evaporation boat, a signal for processing the detection signal collected by the signal collector and outputting a control signal A processor, and a signal actuator for adjusting the wire feeding plastic of the wire feeding wheel by receiving the control signal output by the signal processor and adjusting the transmission ratio of the transmission assembly. The invention can improve the vapor deposition thickness uniformity of the metallized thin film metal coating.

Description

technical field [0001] The invention relates to an ultra-thin high-voltage resistant metallized film evaporation equipment, which belongs to the technical field of metallized film manufacturing equipment. Background technique [0002] The metallized film used to manufacture film capacitors consists of an insulating dielectric film and an evaporated metal layer, and a metal thin film is evaporated on the surface of the insulating dielectric film through a vacuum evaporation process. [0003] Among them, the insulating dielectric film is mainly composed of polypropylene and polyester film. Biaxially stretched polypropylene film in polypropylene film is widely used. Biaxially stretched polypropylene film has high mechanical and electrical properties. Biaxially stretched Capacitors manufactured by vacuum evaporation of polypropylene film have significant advantages such as low heat shrinkage, stable performance, high temperature resistance, high pressure resistance, and breakdow...

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Problems solved by technology

[0006] The continuous vapor deposition equipment in the prior art usually has a relatively large width, and can vapor deposit multiple metallized films at the same time. After the evaporation is completed, the entire metallized film is cut into multiple strips by a cutting device. For a metal evaporation furnace with a large width, it is usually necessary to arrange several evaporation boats in parallel, and each evaporation boat is correspondingly equipped with a wire feed wheel. Because there are certain errors in the shape structure and texture uniformity of the metal wire, and the wire feed wheel There is also a deviation in the wire feeding rate, resulting in a difference in the rate of metal vapor generated in each evaporation boat, resulting in insufficient uniformity of the coating thickness of the metallized film product, which needs to be further improved

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