JPS5837990Y2 - Slit plate for fabric distortion detection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a slit plate in a device for detecting grain distortion of textiles, in which a slit group consisting of at least three slits arranged radially at different angles is connected to a reference grain.
It is an object of the present invention to provide an excellent fabric distortion detection device with high detection accuracy by configuring a detection section by arranging it symmetrically in the advance direction and the delay direction.

Conventionally, a slit plate with a slit whose length direction is at an angle to the standard grain direction is used to detect whether the woven fabric is normal or to what extent it is distorted. A device is used that detects the texture of the fabric and the amount of light transmitted through the slit.

In other words, when the amount of light emitted from a light source such as a tungsten light bulb passes through a woven fabric and is detected by a light receiving element via a slit, the distortion angle of the texture matches the inclination angle of the slit of the slit plate placed on the surface of the woven fabric. Since the amount of light transmission reaches a maximum when the amount of light transmission reaches a maximum, the degree of grain distortion is detected based on the amount of light transmission.

FIG. 1 shows a slit configuration based on the above principle found in the conventional method, and shows the direction of the reference grain arrow XX' of the woven fabric 1 and the direction of the reference grain arrow XX' of the woven fabric 1.
A slit plate 4 is used, which is composed of slits 2 and 3 having two different angles: 0° and 9°.

In the slit plate of the conventional cloth distortion detection device, which has two slits at different angles, when the cloth grain distortion matches the slits at an angle of 4° or 9°, the light is transmitted through each slit to the light receiving element. The amount of incident light is maximum, and distortion angles of 4° and 9° can be detected, but the sensitivity for detecting texture distortion is extremely low for fabrics with high density of texture, making it difficult to correct the texture. There was a drawback that accuracy could not be obtained.

In other words, when a cloth has a structure with a large grain density, the amount of light transmitted from the grain with a certain distortion angle decreases and becomes a light spot, and the positional interval of the transmitted light spots becomes large, so that the two of 4° and 9° Experiments have revealed that using slits at different angles causes miscounting, which reduces the probability of detection and dramatically reduces distortion detection ability.

The present invention was developed after repeated research into the configuration of slits necessary for accurate and responsive detection of grain distortion in various textiles, such as plain weave, twill weave, Shuss weave, erudite, and thick-edged textiles. The above-mentioned problems are solved by arranging at least three or more slits radially with different angles to form a slit group, symmetrically in the advance direction and the delay direction with respect to the reference fabric grain, I was able to make improvements.

Examples will be described below with reference to the drawings.

FIG. 2 is an example of a structure of a slit group suitable for a woven fabric having a Shuss weave structure.

In other words, the reference grain direction arrow XX' of the woven fabric 1 made of Shuss weave
The slits 5, 6, and 7 have three inclination angles of 2°, 4°, and 9° in the advancing direction. Slits 5', 6' and 7' are provided in a slit plate 8 radially in the delay direction.

The slit in the above embodiment is, for example, width Q, length 2
A thin hole with a size of 5 mm is provided in a slit plate 8 made of a copper plate to form a slit.

Now, when the grain of the Shussu weave is in the advancing direction, the amount of light emitted from the tungsten bulb passes through the distorted grain and enters any one of the slits 5, 6, and 7. Detected by a light receiving element.

If the distorted state is in the delay direction, the light that has passed through the distorted cloth grains enters any one of the slits 5', 6', and 7' and is detected by the light receiving element.

While the conventional method had a detection probability of 60% for various degrees of distortion in Shussu weaving, the detection probability was improved to over 95% according to this embodiment.

FIG. 3 shows an example of a structure of a slit group suitable for a woven fabric having a twill weave structure.

That is, the twill weave structure has a higher density of the weave, and it is preferable to have at least three or more groups of slits with different angles.

In this embodiment, slits 9, 10, 11 . and 1
2 in the advance direction with respect to the reference grain direction arrow XX', and in correspondence with the above advance direction, 5 degrees, 15 degrees, 20 degrees, and 22 degrees.
Slits at an angle of 9', 10', 11', 12
', are provided radially on the slit plate 13 in the delay direction.

While the distortion detection probability of the conventional method for various degrees of distortion in twill weave was 20% or less, according to this embodiment, the detection probability was improved to 95% or more.

As described above, the present invention is composed of a group of slits in which at least three slits are arranged at different angles in a radial manner, so it is possible to detect fabric distortions with a high probability even in twill weave, etc., which is almost impossible to detect conventionally. Therefore, it is possible to perform a highly reliable grain correction operation.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating the configuration of a slit in a conventional device. FIGS. 2 and 3 are diagrams explaining the structure of the slit of the present invention. 1... Woven fabric, 5.5', 6.6', 7.7',
9.9', 10.10', 11.11'. 12.12'...Slit, 8,13...
...Slit plate.

Claims (1)

[Scope of utility model registration request] A slit plate for a cloth grain distortion detection device, comprising at least three slits radially provided at different angles to form a slit group, and the slit groups are arranged symmetrically in the advancing direction and the retarding direction with respect to a reference cloth grain.