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A yarn constant tension control device, method and system

A technology of a control device and a control method, which are applied in the directions of transportation and packaging, thin material processing, and filamentary material transportation, can solve the problems of difficulty in controlling the speed of the yarn and the constant tension of the yarn, and achieve a simple structure. , the effect of constant tension

Active Publication Date: 2021-04-06
NEWTRY COMPOSITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The carbon fiber spreading process refers to releasing and expanding the yarn on the bobbin to a specific width, and then evenly winding it on a winding device. One of the most important process requirements is to control the yarn tension. Now In the prior art, the speed difference method is often used to control the yarn tension, that is, there is a certain difference between the winding speed and the unwinding speed, and the yarn is kept at a constant tension by using this difference. However, this method is only applicable to the winding device. Cylindrical structure, when the winding device is a plate-shaped structure, the yarn is wound on the plate for variable speed movement, it is difficult to control the speed of the yarn wound on the winding plate, so it is difficult to control the yarn on the plate-shaped winding device Thread tension is constant

Method used

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  • A yarn constant tension control device, method and system
  • A yarn constant tension control device, method and system
  • A yarn constant tension control device, method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1-3 The yarn constant tension control device shown, the device includes:

[0038] The constant tension unwinding assembly 1 includes a bobbin and a bobbin driving device, the bobbin is used to store the yarn, the bobbin driving device is connected with the bobbin and drives the bobbin to rotate, so that the yarn is released from the bobbin;

[0039] Here, in order to control the rotation of the bobbin conveniently, the bobbin driving device adopts a stepping motor or a servo motor. When unwinding, if everything is running normally, the bobbin rotates at a constant speed, so that the yarn tension value remains constant.

[0040] The yarn pendulum 2 is set to swing, and its free end is provided with a yarn roller for the yarn to bypass. When the tension on the yarn changes, the yarn pendulum swings following the tension of the yarn, thereby controlling the tension to be constant;

[0041] The flat-plate winding assembly 3 includes a winding board and a w...

Embodiment 2

[0047] In the second aspect, based on the same inventive concept, the second embodiment of this specification provides a method for controlling constant yarn tension, such as Figure 4 As shown, the method includes the following steps:

[0048]Step S201, rotating the yarn bobbin, leading out the yarn on it and passing through the yarn swinging rod 2 and the two yarn storage rods 4 in sequence, until the end of the drawn out yarn is fixed on the winding plate and stops rotating;

[0049] Step S202, hanging a weight 5 and the yarn between the two yarn storage rods 4;

[0050] Step S203, rotating the yarn bobbin to make the weight 5 drop due to its own gravity, thereby storing the yarn between the two yarn storage rods;

[0051] Step S204, rotating the winding board so that the yarn is wound on the winding board;

[0052] Step S205, controlling the rotation speed of the yarn bobbin to keep the weight suspended between the two yarn storage rods.

[0053] In the above embodiment...

Embodiment 3

[0058] In the third aspect, based on the same inventive concept, the third embodiment of this specification provides a yarn constant tension control system, such as Figure 5 As shown, the system includes:

[0059] The touch control unit 31 is provided with a start / stop button of the bobbin driving device, a speed adjustment button and a start / stop button of the winding board driving device;

[0060] Drive unit 1 32 and drive unit 2 33 are respectively connected to the bobbin drive motor and the winding drive motor for controlling the rotation of the two motors;

[0061] The PLC unit 34 is connected to the touch unit 31, the drive unit 1 32 and the drive unit 2 33 respectively, and is used to receive the information of the touch unit 31 and make the drive unit 32 and the drive unit 2 33 connected to drive according to the information received Yarn bobbin driving motor and winding driving motor.

[0062] Specifically, the speed adjustment button includes an acceleration butto...

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Abstract

The invention relates to the technical field of carbon fiber spreading, in particular to a yarn constant tension control device, which includes a constant tension unwinding component, a yarn swing bar, a flat plate winding component, two yarn storage bars and a weight. After winding the yarn in the constant tension unwinding assembly over the yarn swing bar, it passes through two yarn storage bars, and realizes constant tension control by placing a weight between the two yarn storage bars. By using the structure of setting the yarn swing bar and the yarn storage rod between the winding plate and the yarn bobbin, the tension on the yarn remains unchanged when the winding plate rotates, which overcomes the problem that the yarn on the winding plate rotates. For the problem of changing the linear speed, the weight between the yarn storage rods is maintained in a suspended state by controlling the rotating speed of the yarn drum, so that the tension is constant. Compared with the prior art, the present invention has simple structure, convenient control and easy realization.

Description

technical field [0001] The invention relates to the technical field of carbon fiber spreading, in particular to a yarn constant tension control device, method and system. Background technique [0002] Large tow carbon fiber preparation technology is one of the key technologies for the carbon fiber industry to achieve low cost. Large tow is also the main technical path for large-scale application of carbon fiber in the industrial field. Compared with small tows, the production efficiency of large tow carbon fibers is higher, and the layup efficiency in the composite material preparation process is also higher, but the production cost can be reduced by more than 30%. [0003] The carbon fiber spreading process refers to releasing and expanding the yarn on the bobbin to a specific width, and then evenly winding it on a winding device. One of the most important process requirements is to control the yarn tension. Now In the prior art, the speed difference method is often used t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H51/22B65H59/36
CPCB65H51/22B65H59/36B65H2701/31
Inventor 谈源李镓旭钮青李春惠
Owner NEWTRY COMPOSITE