An integral adjustment bar coating die head

Abstract

The invention discloses an integral regulating bar coating die head, which relates to the technical field of pole piece coating; comprising a lower die, an upper die, an adjusting gasket located between the lower die and the upper die, a liquid storage tank, and a squeeze block , a chute, an adjustment bar, and an adjustment device; the liquid squeeze block is fixed on the lower side of the adjustment gasket, and the adjustment gasket separates the upper mold and the lower mold to form a slurry channel, and the liquid storage tank and The squeeze block forms a squeeze channel with a U-shaped cross section, one end of the squeeze channel is blocked by an adjusting gasket, the other end of the squeeze channel communicates with the slurry outlet channel, and the lower end of the chute communicates with the slurry outlet channel ; The material of the adjustment bar is rubber. The adjusting bar and the adjusting rod of the present invention are firmly connected, and the adjusting bar is made of rubber material, which does not contain metal material. During the coating process, under the pressure of the cavity and the state of flow, the coating slurry washes the bottom of the adjusting bar, and the adjusting bar is covered. Abrasion produces non-metallic materials, which will not pose a safety hazard to lithium batteries.

Description

technical field [0001] The invention belongs to the technical field of pole piece coating, in particular to an integral regulating bar coating die head. Background technique [0002] Lithium batteries are made of pole pieces that are wound, stacked, welded and packaged, and the pole pieces are the carrier for charging and discharging the power supply. [0003] The pole piece production process is the basic process for manufacturing lithium batteries. The most widely used pole piece production process is the slit extrusion type. A typical slit extrusion coating die head mainly has an upper mold, a lower mold, and an adjustment pad. It consists of a piece and an adjustment device. The adjustment device is a manual device. Each set of adjustment devices is independent of each other. It mainly includes a differential head, a mounting seat, a coupling, an adjustment rod, and an adjustment bar. The differential head is installed on the mounting seat and connected to the adjustmen...

AI Technical Summary

Problems solved by technology

[0005] The traditional adjustment bar is made of metal, and the bottom of the adjustment bar is in direct contact with the slurry. The hardness of the coating slurry can reach 5HRC. Under the pressure and flow of the cavity, the coating slurry washes the adjustment bar, and the adjustment bar is worn The generated metal particles are mixed into the battery slurry, and the slurry is polluted, which brings safety hazards to lithium batteries

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