Automatic tensile testing device with large circumferential area and adjustable draw ratio and automatic tensile testing method for films

An experimental device and stretching ratio technology, which is applied in the field of film stretching, can solve the problems of inaccurate control of stretching ratio, uneven film stretching, and low material utilization rate, so as to save materials, increase the ratio, and increase the stretching speed. fast effect

Inactive Publication Date: 2019-02-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects in the prior art that the stretching of the film is not uniform enough, the utilization rate of the material is not high, and the stretching

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  • Automatic tensile testing device with large circumferential area and adjustable draw ratio and automatic tensile testing method for films
  • Automatic tensile testing device with large circumferential area and adjustable draw ratio and automatic tensile testing method for films

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Embodiment Construction

[0031] In the following detailed description, reference is made to the accompanying drawings which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting.

[0032] Other embodiments may be utilized, and other changes may be made, without departing from the scope of the subject matter presented herein. It will be readily understood that aspects of the disclosure as generally described herein and illustrated in the drawings may be arranged, substituted, combined, separated and designed in various configurations, all of which are expressly contemplated herein .

[0033] The automatic tensile test device for films with adjustable stretch ratio in the circumferential direction and large area of ​​the present invention includes a fixture 1 , a driving device 2 , an aluminum alloy stand 3 , a fi...

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Abstract

The invention discloses an automatic tensile testing device with large circumferential area and adjustable draw ratio and an automatic tensile testing method for films. The automatic tensile testing device comprises a clamp, a driving device, an aluminum alloy stand, a film releasing device and a control console, wherein the driving device consists of a screw rod, a stepper motor, a stepper motordriver and a switching power supply; the film releasing device consists of a film releasing platform and a lifting platform; during use, a film is cut to a certain size and then is putted on the filmreleasing platform; after the film is clamped by a clamp, the stepper motor is started; a sliding table on the screw rod drives the clamp to uniformly outward draw and finally the film with certain draw ratio and better uniformity is obtained.

Description

technical field [0001] The invention belongs to a film stretching device, and in particular relates to a film stretching technology, in particular to an automatic stretching test device and method for a film with a large circumferential area and adjustable stretching ratio. Background technique [0002] The film stretching device is a test device that cuts the film material of the dielectric elastic polymer to a certain size and then stretches it according to the required stretching ratio. The film stretched by the stretching device can be used for the laboratory to make the driver. And the measurement of the mechanical and electrical properties of the material after stretching. [0003] There are several requirements for the film stretching device: 1. The stretching of the film is as uniform as possible, which is beneficial to the follow-up test; 2. The stretching area is as large as possible to improve the utilization rate of materials; 3. The stretching ratio can be freel...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 李铁风陈祥平张明琦周方浩曹许诺张桢
Owner ZHEJIANG UNIV
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