Double-sided high-speed gravure coating device and method for lithium battery

A coating device, lithium battery technology, applied in gravure rotary printing machine, printing, rotary printing machine and other directions, can solve the problems of high coating cost and low efficiency, so as to reduce production cost, reduce labor, and improve work efficiency Effect

Inactive Publication Date: 2017-05-10
XIAN XINDA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lithium battery positive and negative electrode materials - aluminum foil or copper foil needs to be coated with conductive agent (carbon powder slurry or ceramic slurry) on both sides; the original imported or domestic coating machine can only coat one side, and the other side needs to be coated on another Coating on the machine, and the machine speed is only 30m / min; so the efficiency is low and the coating cost is high

Method used

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  • Double-sided high-speed gravure coating device and method for lithium battery
  • Double-sided high-speed gravure coating device and method for lithium battery
  • Double-sided high-speed gravure coating device and method for lithium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0038] In order to overcome the problem of low efficiency of the original coating machine, this embodiment provides a double-sided high-speed gravure coating device for lithium batteries, such as figure 1 As shown, it includes the unwinding mechanism 1, the feeding traction mechanism 2, the front coating mechanism 3, the lower drying box 4, the reverse coating mechanism 5, the upper drying box 6, and the discharging traction mechanism through which the positive and negative materials of the lithium battery pass sequentially. 7 and winding mechanism 8, the described unwinding mechanism 1, feeding traction mechanism 2, front coating mechanism 3, discharging traction mechanism 7 and winding mechanism 8 are arranged in sequence from left to right, and the lower drying box 4 and The upper drying box 6 is distributed parallel up and down, the front coating mechanism 3 and the discharge traction mechanism 7 are located at one end of the lower drying box 4, and the reverse coating mech...

Embodiment 2

[0041] Such as figure 2 As shown, the present embodiment describes the unwinding mechanism 1 in detail on the basis of Embodiment 1, and the described unwinding mechanism 1 consists of a frame and a first unwinding shaft 1-1 installed on the frame, a second unwinding shaft 1-1, and a second unwinding shaft 1-1. Reel 1-2, unwinding cutter 1-3, automatic rewinding device 1-4, lithium battery positive and negative materials are rolled on the first unwinding reel 1-1, second unwinding reel 1-2, the second One unwinding reel 1-1 and the second unwinding reel 1-2 are installed on the automatic rewinding and unwinding device 1-4, and an unwinding cutter 1-2 is installed next to the first unwinding reel 1-1 or the second unwinding reel 1-2 3.

[0042] The first unwinding shaft 1-1 and the second unwinding shaft 1-2 work alternately. When the first unwinding shaft 1-1 has lighted the material, the unwinding cutter 1-3 cuts the material, and the automatic unwinding device 1-4 Control...

Embodiment 3

[0044] Such as image 3 As shown, the present embodiment describes in detail the feeding traction mechanism 2 on the basis of Embodiment 1. The described feeding traction mechanism 2 consists of a frame and a tension roller control system 2-1 installed on the frame, Feeding driving mechanism 2-2, traction pressing system 2-3, tension floating roller control system 2-1, feeding driving mechanism 2-2, traction pressing system 2-3 on the frame from bottom to top distributed.

[0045] The tension floating roller control system 2-1, the feeding drive mechanism 2-2, and the traction pressing system 2-3 involved here are all existing mechanisms, such as image 3 shown, and will not be described in detail here. After the lithium battery material (aluminum foil or copper foil) enters the tension roller control system 2-1, it enters the feeding drive mechanism 2-2, and then enters the traction pressing system 2-3 and is pulled out.

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Abstract

The invention belongs to the technical field of gravure coating for lithium battery materials, and specifically relates to a double-sided high-speed gravure coating device and a method for a lithium battery. According to the double-sided high-speed gravure coating device for the lithium battery, coiled lithium battery materials, that is, aluminium foils or copper foils, sequentially pass through an unwinding mechanism, a charging traction mechanism and a front-surface coating mechanism from the left to right, then enter upwards a lower drying box and pass downwards through a back-surface coating mechanism, then pass upwards through an upper drying box from the left to right, and then pass downwards through a discharging traction mechanism and are led to a winding mechanism for winding. According to the double-sided high-speed gravure coating device and method for the lithium battery, a coating manner is changed into quantitative and same-direction high-speed coating adopting a cable from the original 'reverse coating adopting a micro-gravure roll', and the lengthened, high-temperature, high-air-quantity and energy-saving drying boxes are used, thus the drying time of the coated materials is shortened, and a machine speed can achieve 120m / min for completing one-time double-sided high-speed coating.

Description

technical field [0001] The invention belongs to the technical field of gravure coating for lithium battery materials, and in particular relates to a double-sided high-speed gravure coating device and method for lithium batteries. Background technique [0002] Lithium battery positive and negative electrode materials - aluminum foil or copper foil needs to be coated with conductive agent (carbon powder slurry or ceramic slurry) on both sides; the original imported or domestic coating machine can only coat one side, and the other side needs to be coated on another On-machine coating, and the machine speed is only 30m / min; so the efficiency is low and the coating cost is high. Contents of the invention [0003] The purpose of the present invention is to realize high-speed one-time coating on the front and back of lithium battery materials. [0004] For this reason, the present invention provides a double-sided high-speed gravure coating device for lithium batteries, includin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F9/00
CPCB41F9/009
Inventor 曹江南
Owner XIAN XINDA MACHINERY
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