JPS58173452A - Biaxial tensile torsion tester - Google Patents

Abstract

PURPOSE:To enable the measurement of elongation and torsion with one unit, by sliding the shafts of holders which hold both ends of a film material and rotating one of the shafts by a set angle. CONSTITUTION:Both ends of a cylindrial film material A are held to holders 1, 2. A pressure medium is forced into the material A through a compressor 7, a pressure control device 18 and a hose 16, whereafter a shaft 5 is moved with a motor 9, an internal screw 8, a gear 10, an external screw 6 so as to retreat the holder 1. The elongation of the material A is measured with a detector 14. When a driving device 12 is operated to rotate a shaft 13 at a set angle, the material A is twisted by the rotation of the holder 2 and the torsion of the material A is measured with a detector 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a biaxial tensile torsion testing machine for cylindrical membrane materials such as canvas, rubber, and film.

Conventionally, in order to test a cylindrical membrane material, the ends of the membrane material are first held by opposing plate-shaped bodies, and then a pressure medium such as air is injected into the membrane material in the radial direction. In this method, the membrane material was expanded and the elongation was measured by the difference between the diameter before stretching and the expanded diameter, which had the disadvantage that accurate numerical values could not be measured.

Another disadvantage was that it was not possible to conduct a torsion test.

The present invention aims to eliminate the above-mentioned drawbacks by allowing accurate numerical elongation and torsion measurements.

In this invention, a pair of opposing holders hold the end of the cylindrical membrane material, one holder restricts rotation and moves in the axial direction, and the other holder restricts axial movement. A tester is provided which is capable of measuring elongation and torsion while rotating the membrane material and pressurizing a pressure medium into the membrane material.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1.2 is a pair of holders that hold both ends of the cylindrical membrane material A, and this holder 1.2 has a disk 3 and
A band 4 is used to clamp the edge of the membrane material A fitted onto the surface of the disc 3.

Further, one of the holders 1 is provided with a shaft 5 that restricts rotation and moves in the axial direction.

In the illustrated case, the movement mechanism of the shaft 5 is as follows: a vertebral screw 6 is provided on the shaft 5, a screw screw 8 provided to be rotated at a fixed position by a bearing 7 is screwed into the mass screw 6, and is moved by a motor 9. A gear 10 and a gear 11 fixed to a single screw 8 are meshed to move the shaft 5 in the axial direction.

Furthermore, a shaft 13 is connected to the other holder 2 to restrict movement in the axial direction and to provide rotation at a set angle by means of a crimped oscillation device 12.

Further, a thrust detector 14' is provided in the middle of the shaft 5 or between the shaft 5 and the holder 1.

Further, a torque detector 15 is provided in the middle of the shaft 13 or between the shaft 13 and the holder 2.

The holder 1 is supplied with a set pressure in the membrane material A, and the hose 16 is supplied with air at a constant pressure from a compressor 17 to a pressure fjlla device 18tl-.

In the figure, 19 is tape μ, and on this tape /I/19,
A shaft 5.13 is supported through the bearing 20t.

The testing machine according to the present invention has the above configuration, and then:
To explain the trial manufacturing method, first, both ends of the cylindrical membrane material A are held by the holder 1.2.

After that, after injecting the pressure medium at the set pressure into the membrane material A, when one holder 1 is moved backward (in a direction away from the other holder 2) by moving the shaft 5, the detector 14 detects that the membrane The elongation of material A can be measured.

In addition, when the shaft 13 is rotated at a set angle by operating the V-movement device 12, the membrane material A is
Since the membrane material A is twisted, the twist of the membrane material A can be measured by the detector 15.

As described above, according to the testing machine according to the present invention, the elongation of the membrane material is measured by the detector by sliding the shaft of one holder, and the shaft of the other holder is rotated by a set angle. Since the detector can measure the torsion of the membrane material, elongation and torsion can be measured with a single detector.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a test rock according to the present invention;
The figure is a perspective view showing the main parts of the same as above. A...Membrane material, 1.2...Holder, 3...Circle, temporary, 4...Tightening band, 5...Shaft, 6...Male screw, 7... Bearing, 8...Female screw, 9...Motor,
DESCRIPTION OF SYMBOLS 10... Gear, 11... Gear, 12... IK moving device, 13... Shaft, 14... Detector, 15... Detector, 16... Hose, 17...・Compressor 18
...Pressure 1fIII control device patent applicant Taiyo Kogyo Co., Ltd.

Claims (1)

[Claims] A pair of holders arranged oppositely to hold both ends of the cylindrical membrane material, □A shaft connected to one of the holders and provided to restrain rotation and move in the axial direction, and the other holder At the same time as connecting to the
A device is equipped to provide a fixed angle of rotation, a thrust ejector is provided to act by moving the shaft, a tortuosity detector is provided to act by rotating the shaft, and a set pressure is set within the membrane material. A two-axis tensile torsion tester consisting of a hose connected to one holder so as to pressurize a pressure medium.