SU1335843A1 - Arrangement for determining stifness coefficent of industrial fibres and fabrics - Google Patents

Abstract

This invention relates to a measurement technique and can be used in textile industry. The purpose of the invention is to improve the accuracy of determining the stiffness coefficient of technical yarns and fabrics. The device contains a vice mounted on a steel plate, connected via a spring-loaded system of levers with a rheochord sensor, which allows to take into account the movements of the vice resulting from the deformation of the steel plate. 1 hp f-ly, 3 ill. (L 00 00 4 00

Description

The invention relates to a measurement technique, in particular, to devices for determining the stiffness coefficient of textile materials.

The purpose of the invention is to improve the accuracy of determining the stiffness coefficient of technical yarns and fabrics by creating test conditions that are close to the conditions of use.

Fig. 1 shows a device for determining the stiffness coefficient of technical threads and fabrics; a general view; in fig. 2 - plate with vices mounted on it, associated with a rheochord sensor; in fig. 3 is an oscillogram obtained by measuring the stiffness coefficient of a CBM yarn.

The device consists of a plate 1, a stand 2, a movable vice 3 associated with the drive 4 and the movement control device 5. Vise 6 is rigidly mounted on a steel plate 7, on which strain gauges are pasted on a bridge circuit. The plate 7 is cantilever-mounted on a rack 2, on which a rheochord sensor 85cc is installed, through a system of levers 9 with a vise 6. The system of levers is held by springs 10., In a vice 6 and a fixed vise 3, research material 11 is installed.

The device operates as follows:

The steel plate 7 is calibrated with a strain gauge and a resistor sensor 8 pasted on it in a bridge circuit. After being tamed, the system of levers 9 of the resistor chassis 8 is rigidly connected to vise 6 and, in order to avoid backlash in the system of levers 9, spring 10. in the highest position. Test material 11 is fixed in a vice 6 and some initial tension is set to it. Then the lower end of the test material 11 is fixed in the movable vice 3.

ten

15 20

358432

After switching on the drive mounted on the plate 1, the mobile vice 3 makes a reciprocating motion in the vertical plane and through the material under test act on the steel plate 7 and the rheochord sensor 8. Recording vibrations and movements along the vertical of the vice b are performed using recording equipment close to the conditions of operation of technical threads and fabrics on textile equipment.

The calculation of the stiffness coefficient of the meter sample is made according to the formula

de

L1nAlf

LT

the amount of deforming force; the amount of movement of mobile tiscoli;

the amount of movement of the vice mounted on a steel plate,

25 ZO

35

0

five

0

Claims (2)

1. A device for determining the coefficient (|) of the stiffener of technical yarns and fabrics} containing its plate, a rack mounted on it with a movable vise, and a top vise mounted on a steel plate cantileverly mounted on a rack, characterized in that In order to improve the accuracy of determining the stiffness coefficient of technical threads and fabrics, a rheochord sensor and a spring-loaded system of levers are inserted into it, with the upper vise connected via a spring-loaded system of levers with a rheohord sensor mounted in console Toke, I 2. The device according to claim 1, wherein the mobile vise is associated with a movement control device. 8 9 o / J  L i ig. / Editor, p. Geresi Order 4040/36 Edition 776 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Compiled by V. Korolev Tehred M.DYDYK Proofreader N. King