SU1751672A1 - Fabric shrinkage analyzer - Google Patents

Abstract

Use1 in the apparel industry to study the ability of sewing materials to shape the essence of the invention. The device comprises a housing, a base, vertical guides fixed on them mounted in the guides of the movable plate and a transparent pressing plate movable in the plane of the base an additional plate and means for forming a bulge made in the form a spherical end rod mounted on a movable plate with the possibility of vertical movement and equipped with an indicator The value of the displacement of the rod mounted on a movable plate and interacting with its probe with the base. Coaxial central holes are made at the base of the additional plate for the transparent pressing plate. The spherical end of the stem is arranged. The transparent pressing plate is equipped with weights that are evenly placed on its surface. (/)

Description

The invention relates to devices for determining the physicomechanical properties of textile materials and can be used in the clothing industry.

A known device for the spatial stretching of a circular sample containing a pressing device, an elastic membrane, a device for loading a sample of pneumatic action.

The disadvantage of the device is that it does not allow to evaluate the properties of the convexity on the material in the near-formed zone and to determine its thickness.

A device is known for investigating the process of tissue landing, comprising a base, pressure plates mounted thereon, mounted in guides a pressure plate and a measuring scale, in addition there is a gauge of material sample thickness, a mechanism for lowering the pressure plate and centering the initial bulge

The drawback of the device is the impossibility of estimating the properties of the waviness of the material during its spatial (biaxial) molding.

The purpose of the invention is to expand the technological capabilities of assessing the physico-mechanical properties of textile materials.

This goal is achieved by the fact that the device comprising a base, a movable transparent pressing plate, means for forming a bulge on the sample and a sample thickness gauge is additionally provided with a housing with vertical on it fixed on the XI.

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(VJ

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control plates, a movable plate mounted in vertical guides above the transparent pressing plate and an additional plate mounted on the base for movement in its plane, while the means for forming a bulge on the specimen is made as mounted on the movable plate with the possibility of vertical movement of the rod with a spherical end and provided with an indicator of the magnitude of the movement of the rod mounted on a movable plate and interacting with its probe with the base, and the pressing plate and an additional plate made based coaxial central holes for receiving a rod with a spherical end.

In addition, the transparent pressing plate is provided with weights placed evenly over its surface.

FIG. 1 shows the device, a general view; in fig. 2 - the device with the lowered transparent pressing plate, a general view; in fig. 3 is a diagram of the contact of the spherical surface of the rod with the sample materials.

The device includes a base 1, in the groove of which there is an additional movable plate 2 with a hole 3 in the form of a circle in the center, a retainer 4, racks 5 on which the base 1 is fixed, guides 6 rigidly connecting the base 1 to the housing 7 on which a nut 8 with a screw 9 and a handle 10. At the end of the screw 9, a washer 11 is fixedly slidable, located in a groove of the mounting plate 12 mounted on the movable plate 13 with bushings 14 located on the guides b, and a holder 15 in which located, fixed the first screw 16, the rod 17 bumps generating means. On the guides 6 is fixed by means of sleeves 18 and screws 19 a pressing plate 20, through the opening 21 of which the rod 17 passes, which has weights 22 mounted on the brackets 23. On the tide 24 of the base 1 the sleeve 25 is rigidly fixed, in which the screw 26 fixes the measuring pin 27, passing through the opening in the inflow 28 of the movable plate 13 and coming into contact with the lever 29 of the indicator 30.

The device works as follows.

A sample of material W in the form of a circle of radius R is placed on the movable plate 2 of the base 1, extending it in such a way that the rod 17 rotates by the handle 10 downward until it contacts the plate 2. After this, a zero value is set

on the indicator 30, moving the measuring pin 27 and fixing it with the screw 26 Turning the handle 10 the rod 17 is raised above the movable plate 2 to a height sufficient for placing the material sample The device is ready for operation, turning the handle 10 the rod 17 is lowered by the specified immersion value , following the indications of the indicator 30 Reaching the desired height, turning the screws 19 release the pressing plate 20, which is lowered onto the sample of material W. The brackets 23 hang weights at the rate of 1 kg / cm 2 for light fabrics and 2 kg / cm for heavy

tissue, compressing a sample of material W between pressure plate 20 and base 1. Measurements of test parameters are made using indicator 30 and gauge ram (not shown) Indicator 30 determines the amount of rod 17 having a diameter with radius RI in the material and its corresponding value corner of it. To do this, to determine how well the process is performed,

You need to know how much material distortion can affect the quality of the product. Proceeding from the condition that (Cd) the deformation coefficient characterizes the degree of material deformation

- the quality of technological operations, accompanied by the deformation of the material, can be assessed by the presence of waves, wrinkles, folds on the material that cannot be eliminated, which is characterized by

thick material. The change in the thickness of the material corresponds to the value of Kd, which is called the critical. The value of the material deformation coefficient is determined as the ratio

arc lengths with radii RI and R2 according to the formula

Cd

2 n R1 and RI tg a 2JIR20.N

45 where RI is the radius of the rod (see FIG. 3),

R2 is the radius of the arc of a circle located on the border of the immersion depth

R2

H tg a

, H Ri -h

h - immersion depth, determined by the indicator readings.

For a specific example, mm and mm are chosen, the tangent of the angle will be a 0.46,,, 05;

After that, the thickness of the bulges sandwiched between

clamping plate 20 and the base 1 of the area of material of radius R according to the formula

(hnn + ho), where pm - thickness of the clamped material;

he is the total total thickness measured by shtangraymus;

NPL is the pre-measured thickness of the pressure plate;

h0 is the previously measured base thickness.

Then the measurement cycle is repeated.

The proposed device will allow to expand the measurements of the parameters of the physicomechanical properties of the tested samples of materials; improve the quality of measurement results; shorten the process of creating new models; reduce the complexity of the process of making models of garments.

Claims (2)

1. An apparatus for studying the process of planting a material comprising a base, a movable transparent pressure plate, means for forming a bulge on the specimen and a thickness gauge sample, characterized in that, in order to expand the technological capabilities, it additionally has a housing with vertical guides fixed on it, a movable plate mounted in vertical guides above the transparent pressing plate, and an additional plate mounted on the base with the possibility of in its plane, with the means for forming a bulge on the sample made in the form mounted on a moving plate with the possibility of vertical movement of the rod with a spherical t rtsom and the amount of movement is provided with an indicator rod, mounted on the movable plate and cooperating with the probe to its base, wherein a transparent pressing plate dopol0 tional plate and bottom formed coaxial central holes for receiving a rod with a spherical end. 2. The apparatus according to claim 1, characterized in that the pressing plate is transparent 5 is supplied with loads placed evenly over its surface. figure 1 thirty FIG. 2