Double-layer coating die head and coating machine

Abstract

The invention belongs to the technical field of coating machines and coating machine accessories, and particularly relates to a double-layer coating die head and a coating machine. The double-layer coating die head comprises a die body, the side, close to a base material, of the die body is provided with a semi-arc groove, the end, located in a first cavity, of the semi-arc groove is provided with a first arc groove, and the side, away from the first cavity, of the first arc groove is provided with a second arc groove; the radius of the second arc groove is larger than that of the first arc groove, a first discharging port is formed in the connecting position of the first arc groove and the second arc groove, a heating plate is arranged on the surface of the second arc groove, a third arc groove is formed in the side, close to the second cavity, of the second arc groove, and the radius of the third arc groove is larger than that of the second arc groove. By separating the two discharge ports and arranging the heating plate, the air drying and curing time of a first layer of coating is prolonged, the curing process of the first layer of coating is accelerated, and the effect that a second layer of coating is attached to the first layer of coating is better.

Description

technical field [0001] The invention belongs to the technical field of coating machines and coating machine accessories, in particular to a double-layer coating die head and a coating machine. Background technique [0002] Many products in daily life need to apply specific glue, paint or ink on the substrate to make the substrate have specific functions. For example, adhesive tape needs to apply glue on the plastic substrate to make it have bonding function. The active material layer is coated on the substrate to improve battery safety, etc. [0003] Because the coating machine is made of relatively mature structures and materials, the various mechanisms of the equipment operate stably. When coating coatings, it not only reduces labor intensity but also improves coating efficiency compared with manual work. However, in actual In production and life, sometimes it is necessary to apply double-layer coatings to the substrate. Generally, it can only be coated in a single layer....

AI Technical Summary

Problems solved by technology

[0003] Because the coating machine is made of relatively mature structures and materials, the various mechanisms of the equipment operate stably. When coating coatings, it not only reduces labor intensity but also improves coating efficiency compared with manual work. However, in actual In production and life, sometimes it is necessary to apply double-layer coatings to the substrate. Generally, it can only be coated in a single layer. The double-layer coating dies in the prior art improve the efficiency and time of double-layer coating, but the disadvantage is that the double-layer coating During the coating process, the distance between the two coating openings is relatively close. Before the first layer of coating material is completely attached to the substrate, the second layer of coating material starts to coat, which may easily cause the second layer of coating material to fall off. , thereby reducing the quality and yield of double-layer coating

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