SU1223144A1 - Arrangement for determining effort of textile material puncture - Google Patents

Abstract

The invention makes it possible to increase the reliability of measurement results in a device for determining the puncture force of a textile material. The needles 9 are mounted in a holder 1 having a movement mechanism 3. The holder 1. moves in the guides 2. The plates 4 and 5 serve to clamp the sample in the puncture zone. The upper plate 4 is pressed to the lower plate 5 by means of a spring 6. The threads 10 are threaded into the eye of each needle 9 and held by rubber rings 11. The proposed device is also equipped with puncture force sensors. The needles 9 are set at equal distance from one another. Each trace of a needle in a row is shorter than the previous one by the same amount. 3 il. T g Cyxy gwjgKjSxfo exggs; / T

Description

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The invention relates to materials science of garment production and can be used in other industries of light industry to determine the puncture force of a textile material.

The purpose of the invention is to increase the reliability of measurement results.

Figure 1 shows the device, a general view; figure 2 - section aa on fig.G (section of the upper part of the needle holder); on fig.Z - node I in figure 1.

A device for determining the puncture force of a textile material will hold the holder 1 mounted for movement in the guides 2, the mechanism of its movement 3, the plates 4 and 5 for clamping the sample in the puncture zone, the upper A of which is pressed against the lower 5 by means of a spring 6 The clamping force is controlled by the coils 7. In the sockets 8 of the needle holders, the needles 9 are installed with the threads 10 threaded into each of them, held by the rubber rings 11.

Needles 9 are installed in a row at the same distance from each other, corresponding to the step of the selected line, with each next needle in a row shorter than the previous one by one and the same value of h, preferably not less than 70% of the thickness of the test material. On the needle holder 1, under each of the sockets 8 for the needles 9, spring plates 12 are mounted with strain gages 13 fixed on them, while the plates 12 touch the upper part of the flasks of the needles 9.

The device works as follows.

On the plate 5 without prior specimen is placed

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a section of textile material and is clamped by the plate 4 by means of a spring 6 and screws 7. The mechanism for moving 3 needle holders 1 is turned on and it is lowered along the guides 2 in a vertical plane at a predetermined speed. When the material is punctured by the first needle 9, it is fixed relative to the plates 4 and 5, the Second needle enters the material only when the first needle has already fixed its position, and the puncture force is recorded. Each next needle enters the material at an equal distance from the previous one and after fixing its position, which imitates the wall of the stitch, each time the value of the puncture force is recorded.

After piercing the material with all the needles, the drive is stopped and the needle holder is returned to its original position.

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Claims (1)

Invention Formula A device for determining the puncture force of a textile material, comprising a needle mounted in the holder, a holder movement mechanism, a puncture force sensor mounted on the holder, and a plate for plugging the sample in the puncture zone, characterized in that, in order to increase the reliability of the determination results, it is additionally It is equipped with needles and sensors, the needles are set in a row at the same distance from one another, with each next needle in a row shorter than the previous one by the same amount. FIG. 2 Fig.Z