SU938155A1 - Instrument for extension of textile and film materials - Google Patents

Description

one

 The invention relates to apparatus for testing textile and film materials and can be used in the textile industry to obtain single-cycle and multi-cycle characteristics of tensile materials.

A device for testing textile and film materials is known, comprising a sample clamp, a holding unit comprising a lock with a housing and a stem, a lock locking assembly, a sample static tensioning lever and a cyclic loading mechanism including a double-arm lever, with one arm connected to a cam drive tl.

The drawback of the device is its low reliability and accuracy of a given cyclic amplitude of deformation.

The purpose of the invention is to improve the reliability and accuracy of the test results.

This is achieved by the fact that the device containing the clamp of the sample, its holding unit, includes a lock with a housing and a rod, a lock assembly of a lock,

J The lever of the static tensioning mechanism of the sample and the cyclic loading mechanism, which includes a double-arm lever connected by a cam drive with one arm, has guides to fit the lock body, while the sample clamp is connected to its holding unit through the lever of the static tensioning mechanism , the lock body is provided with a damping spring, and the lower end of the lock rod is in contact with the working shoulder of the static tension lever.

The drawing shows the kinematic diagram of the device.

Claims (1)

20 The device consists of clamping an image 1 installed in guides 2, a hinge 3, a lever k, a static tension mechanism 5 through which the clamp of sample 1 is connected to a clamp 6, having a rod 7i and a housing 8 installed in guides 9 with an emphasis on the damping spring 10. The locking unit of the lock consists of the stop 11 resting on the lever 12, on which the indicator 13 is mounted. The lever 12 under the spring of spring 1. The cyclic loading mechanism consists of the pusher 15, mounted on the stem 16, resting on traverse 17 which interacts with one double-arm lever arm 18 mounted on the movable support 1.9, using a displaceable .vinta 20. The cam actuator 21 through the cam 22 is coupled with the second arm of the lever dvuplefiero 1B. For setting the desired amplitude of the cyclic deformation, the scale 23 is used to count the residual cyclic deformation - the scale 24, to set the specified static tension - the moving load 2 The kinematic lock control circuit 6 consists of a cam 26, a lever 27, a rod 28, a fork 29 which is tightly connected with the cam sleeve 30, the cams of which interact with the spring-loaded balls 31 of the lock 6. The device also contains counters of the number of deformation cycles (Samples and a counter of a specified number of cycles of deformation of the samples, providing device operation up to a specified number of cylinders (not shown). The device can operate both in a mode with a constant value of a given amplitude of cyclic deformation, and a constant value of a given cyclic load. In a mode of operation with a constant value of a given amplitude cyclic deformations are used to set the amplitude by moving the support 19 of the two shoulders lever 18 with the aid of a screw 20, while observing the adjustment of the amplitude is carried out on a scale 23. The body of the lock 6 is restrained from moving by the stop 11 through the lever 12 The static tension value of the sample is established by moving the load 25 along the lever k of the static tension mechanism 5. At the moment before the sample starts to deform, the locks 6 are closed using a kinematic control circuit consisting of a cam 26, a lever 27 and a rod 28, which, when moved, protrude the cam sleeves 30 through the forks 29, the cams of which ensure the spring balls to wedge. 31 locks 6. Specimens are deformed by pushers 15 mounted on rods 16, driven by a cam actuator 21 by means of a cam 22 through a double-arm lever 18 and a yoke 17. The law of loading, load and load periods Samples of samples are provided with cam profile parameters 22. After the loading period is over, locks 6 are opened using the kinematic locking control circuit. Observation of the residual cyclic deformation of the sample is carried out on a 2k 8 operating mode with a constant amplitude of cyclic deformation and a predetermined static tension of the image set with a given cyclic load in the same way as with a constant predetermined amplitude of cyclic deformation. Then the stop 11 is retracted from the lever 12 and the body 8 is loaded through the lever 12 by the spring 14, while deforming the spring i5, the deformation of which provides the specified load. By ; the scale of the indicator 13, traded by the calibration weights, control the specified load on the sample. Then the device works in the same way as in the mode with a given amplitude of cyclic deformation. The use of the proposed device will improve reliability by reducing the load on the lock and reduce the error of a given amplitude of cyclic deformation, which contributes to improving the accuracy of the test results. The invention The device for stretching textile and film materials, containing a sample clamp, a holding unit containing a lock with a housing and a stem, a lock lock assembly, a sample static tensioning lever and a cyclic loading mechanism including a double-arm lever connected to one shoulder cam drive, characterized in that, in order to increase the reliability and accuracy of test results, it  the lever arm of the mechanism is static and guiding to install the shaft. lock, and the sample clamp is connected. with a knob holding it through a lever - :. -GYMG t: rGGr: AO. . . . .01.5 / 18.1E70. AND J -five frrrr1 I I 1 d 4 siy