A coating die and coating machine

A coating and die head technology, applied in the field of coating machines, can solve the problems of affecting the coating quality, poor gasket homogenization effect, uneven density, etc., to improve coating quality, improve homogenization effect, and transverse surface The effect of uniform density distribution

Active Publication Date: 2022-08-05
SHENZHEN MANST TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved in the present invention is to overcome the poor homogenization effect of the gasket in the coating die in the prior art, and the inhomogeneous transverse surface density everywhere when the slurry flows out, which affects the coating quality. defects, thereby providing a coating die head and a coating machine

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  • A coating die and coating machine
  • A coating die and coating machine
  • A coating die and coating machine

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Embodiment Construction

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must hav...

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Abstract

The invention discloses a coating die head and a coating machine. The coating die head comprises an upper die head and a lower die head that cooperate with each other, an extrusion gap is provided between the upper die head and the lower die head, and one end of the extrusion gap is provided. There is a discharge port, the coating gasket is arranged in the extrusion gap, at least one coating opening for discharging is formed on the coating gasket, and the coating gasket is located in the part between the coating opening and the discharging port There are a plurality of protrusions arranged at intervals. A multi-layer coating gasket is arranged in the extrusion gap, and a plurality of staggered protrusions are arranged on the coating gasket; on the one hand, the plurality of protrusions can play a supporting role between different layers of the coating gasket, Avoid the problem that the coating gasket is deformed due to the large pressure difference in the extrusion gap, thereby affecting the coating quality; on the other hand, multiple protrusions can homogenize the slurry flowing in the coating channel , so that when the slurry is extruded, the lateral surface density distribution is more uniform, and the coating quality is improved.

Description

technical field [0001] The invention relates to the technical field of coating machines, in particular to a coating die head and a coating machine for multi-layer coating. Background technique [0002] Extrusion coating is one of the main coating methods in the current lithium battery industry. In the extrusion coating process, the slurry delivered to the slit of the coating die is extruded, coated on the surface of the substrate, and then passed through. The coated product was obtained after oven drying. When the slurry is extruded from the slit, because the middle of the slit is close to the feed port, the extrusion pressure will be greater than that on both sides, resulting in a higher lateral surface density in the middle than on both sides, which affects the quality of the coated product. At present, spacers are generally placed in the slits to make the extrusion pressure and transverse areal density more uniform throughout the slurry as it is extruded. However, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C5/02
CPCB05C5/0254
Inventor 彭建林许玉山
Owner SHENZHEN MANST TECH CO LTD
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