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Preparation device and preparation process of carbon fiber multifilament test sample strip

A preparation device and carbon fiber tow technology are applied in the field of preparation devices for carbon fiber multifilament test splines, which can solve the problems of uneven tension between splines, inability to guarantee the tension during fiber dipping, and the like, and achieve the effect of ensuring accuracy

Active Publication Date: 2021-11-05
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual operation process, in order to realize the "straightening and tightening" of the fibers after dipping, the sample preparation devices used by various carbon fiber manufacturers also have their own characteristics. Dipping on the frame, this method cannot guarantee the tension during and after dipping of the fiber, and some manufacturers use a frame with springs, a bundle of fibers reciprocates 10 times, but the tension when winding the frame is still subject to human factors Influence, resulting in uneven tension between splines

Method used

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  • Preparation device and preparation process of carbon fiber multifilament test sample strip
  • Preparation device and preparation process of carbon fiber multifilament test sample strip
  • Preparation device and preparation process of carbon fiber multifilament test sample strip

Examples

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Effect test

Embodiment 1

[0044] Such as Figure 1 to Figure 8 The preparation device for the shown carbon fiber multifilament test sample includes:

[0045]The constant tension unwinding assembly 1 further includes a bobbin 2 and a bobbin driving assembly 3, the bobbin 2 is used to store carbon fiber tow, the bobbin driving assembly 3 is connected with the bobbin 2 and drives the bobbin 2 to rotate, so that the bobbin The carbon fiber tow on 2 is released;

[0046] The untwisted positioning assembly further includes two adjacent positioning columns 4, and the carbon fiber tow released from the bobbin 2 passes between the two positioning columns 4;

[0047] The buffer device further includes a fixed first yarn roll 5 and a swinging second yarn roll 6, the two ends of the first yarn roll 5 are respectively connected to swing levers 7, and the second yarn roll 6 is rotatably connected to the swing lever 7. At one end, the second yarn roller 6 swings following the tension of the carbon fiber tow, and th...

Embodiment 2

[0065] A preparation process for a carbon fiber multifilament test sample, comprising the steps of:

[0066] S1: Unwind the carbon fiber tow on the bobbin, and pull the unwound carbon fiber tow;

[0067] S2: Carry out untwisted positioning, buffering operation, fiber spreading operation, tension detection, dipping operation and extrusion operation on the unwound carbon fiber tow in sequence, and finally wind the carbon fiber tow on the cross creel, and use The fixed pressing piece fixes the end of the carbon fiber tow;

[0068] S3: Use the constant tension unwinding component to unwind the carbon fiber tow on the bobbin, and control the unwinding speed of the bobbin through the detection signal of the tension sensor to maintain the constant tension state of the carbon fiber tow. At the same time, the power of the cross creel Driven to rotate at a constant speed to wind the carbon fiber tow;

[0069] S4: After the winding is completed, the carbon fiber tow in the state of con...

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Abstract

The invention relates to the technical field of carbon fiber multifilament testing, and especially relates to a preparation device and a preparation process of a carbon fiber multifilament testing sample strip. The device comprises a constant-tension unwinding assembly and a non-twist positioning assembly; and a buffer device, a fiber spreading assembly, a tension sensor, a gum dipping tank, a plurality of gum extruding wheels, a winding device and a PLC. The constant-tension unwinding assembly is adopted to unwind carbon fiber tows on a spool, the winding device is adopted to wind carbon fibers, in the winding process, tension detection is performed through the tension sensor, the PLC receives and displays a tension signal of the tension sensor and controls the rotating speed of a yarn drum according to the received tension signal, constant-tension unwinding is achieved, it is guaranteed that the tension of the carbon fiber tows is consistent in the winding process, and the accuracy of the tensile property test is guaranteed. Compared with a conventional means, the preparation device is high in automation degree and has practicability.

Description

technical field [0001] The invention relates to the technical field of carbon fiber multifilament testing, in particular to a preparation device and a preparation process for a carbon fiber multifilament test sample. Background technique [0002] Due to its excellent properties such as high strength, high modulus, corrosion resistance, low density, high electrical conductivity, etc., and the production cost has been greatly reduced, carbon fiber has been widely used in aerospace, high-power wind power generation machinery, automobile industry, sporting goods, and marine durability. Military or civilian fields such as corrosion materials, especially high-performance carbon fibers, are indispensable strategic materials in the defense industry. [0003] In the process of R & D and production, the mechanical properties of carbon fibers need to be tested. The content of the mechanical properties of carbon fibers mainly includes: tensile strength, tensile modulus of elasticity, fr...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 谈昆伦季小强刘时海
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH