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Constant tension system and method based on it to avoid under-extension of diaphragm cold-pressed belt

A technology of constant tension and diaphragm, which is applied in the direction of thin material processing, transportation and packaging, and winding strips. The effect of improving the efficiency, avoiding wrinkling, and improving the anode efficiency

Active Publication Date: 2021-02-09
UNITED AUTO BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] After the anode is rewound and spliced, the unextended blank area at the end of the roll shrinks and overlaps, which causes the correction device to fail and swing during pre-slitting, resulting in abnormal conditions such as diaphragm wrinkling, pre-slitting width deviation, and broken tape. , fixed loss 4EA / roll

Method used

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  • Constant tension system and method based on it to avoid under-extension of diaphragm cold-pressed belt

Examples

Experimental program
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Effect test

Embodiment 1

[0025] like figure 1 Shown, a kind of constant tension system, it comprises unwinding part 1, front tension cut-off device 2, front tension stretching device 3, roll set 4, back tension stretching device 5, back tension cutoff device 6 and take-up arranged in sequence Rolling part 7, unwinding part 1 The unrolled film passes through the front tension cut-off device 2, the front tension stretching device 3, the roll group 4, the back tension stretching device 5 and the back tension cut-off device 6, and finally passes through the winding part 7 rewinding.

[0026] like figure 1 As shown, the front tension stretching device 3 and the rear tension stretching device 5 are both tension swing rollers. Specifically, the tension pendulum roller controls the magnitude of its tension through the thrust of the cylinder.

[0027] like figure 1 As shown, both the front tension breaking device 2 and the rear tension breaking device 6 include a set of nip rollers.

[0028] like figure ...

Embodiment 2

[0031] A method for avoiding under-stretching of a diaphragm cold pressure transition zone, based on a constant tension system, wherein,

[0032] After the production of the previous film roll is completed and before the production of the next film roll, the head of the next film roll is connected to the tail of the previous film roll with tape to form a joint;

[0033] When the splicing joint moves to the back of the front tension stretching device 3 and before the roll group 4, open the two rolls in the roll group 4, and the tension of the front tension stretching device 3 and the rear tension stretching device 5 will be automatically balanced to normal Production film tensile tension;

[0034] After the splicing joint passes through the roll group 4, the two rolls in the roll group 4 are closed, and the tension of the front tension stretching device 3 and the rear tension stretching device 5 is adjusted to the automatic balance before continuing normal production.

[0035]...

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Abstract

The invention discloses a constant tension system and a method for avoiding under-stretch of a diaphragm cold pressure transition belt based on the constant tension system. The tension stretching device, the back tension cut-off device and the winding part, the unwinding film in the unwinding part passes through the front tension cut-off device, the front tension stretch device, the roller group, the back tension stretch device and the back tension cut-off device, and finally The rewinding part is rewinded. The constant tension system of the present invention can ensure the consistency of the stretching of the diaphragm, thereby effectively reducing loss and improving yield.

Description

technical field [0001] The invention relates to a constant tension system and a method for avoiding under-extension of a diaphragm cold pressure transition zone based on the constant tension system. Background technique [0002] The traditional cold-press tension system only has one tension stretching device. The cold-press changes rolls and connects the strips. Before the joints reach the rolls, in order to avoid loss of rolls at the joints and breakage of the film rolls, the rolls need to be opened. There is no tension cut-off for the rolls. Keep consistent with the unwinding tension, the system automatically weakens the tension of the tension stretching device to the unwinding tension. After the joint passes through the roll, there is a blank area of ​​the diaphragm that is equal to the distance from the transition belt and the cathode is easily broken. The belt and the anode are prone to shrinkage and overlapping of the rollers in the blank area, causing the correction d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H19/18B65H23/14B65H23/34
CPCB65H19/18B65H23/14B65H23/34
Inventor 王灏骆昌胜童杰张盛武
Owner UNITED AUTO BATTERY CO LTD