KR200448762Y1 - Weft sensing device for automatic weft-straightener - Google Patents

Abstract

The present invention relates to an automatic tooling corrector, in the weft detecting device for the automatic tooling corrector for correcting the weft of the fabric fabric, a single LED that emits light toward the fabric fabric, and the path of the light emitted from the LED A light emitting unit including a lens positioned at and extending a region in which light emitted from the LED is illuminated; And a light receiving unit for emitting light emitted from the LED to receive light through the fabric fabric. By providing a weft detecting device for an automatic tooling corrector, the LED having excellent straightness, low power consumption, and semi-permanent use can be used. Use as a light source but using only one LED, and use a lens to inject light with equal amount of light in a relatively wide target area, providing enough light for weft detection, In addition, even if it changes, it is possible to obtain the effect of preventing the phenomenon of light unevenness in the target area to continuously perform accurate weft detection.

Weft, correction, LED, lens, light emitting part, light receiving part, weft detection

Description

Weft detection device for automatic tool corrector {WEFT SENSING DEVICE FOR AUTOMATIC WEFT-STRAIGHTENER}

1 is a front view showing an example of an automatic tool cutter;

Figure 2 is a cross-sectional view showing the automatic tool corrector of Figure 1,

3 is a conceptual view schematically showing an example of an arrangement structure of the weft detecting device for the automatic tooling corrector;

4 is a conceptual diagram schematically showing another example of an arrangement structure of the weft detecting device for the automatic tooling corrector;

5 is a conceptual diagram schematically showing another example of the arrangement structure of the weft sensing device for the automatic tooling corrector;

Figure 6 is a perspective view showing an example of a light source for the weft detection device according to the prior art,

7 is an exploded perspective view showing a light emitting unit of the weft detecting apparatus according to the present invention,

8 is a cross-sectional view schematically showing a light emitting unit of the weft sensing device according to the present invention.

* Description of the symbols for the main parts of the drawings *

30: skew roller 40: bow roller

55, 100: light emitting portion 65: light receiving portion

110: LED 120: lens

130: light guide tube

The present invention relates to an automatic woodworking corrector, and more particularly, to a weft sensing device for woodworking corrector for detecting the bending of the weft of the fabric immediately before the dyeing process or tent process of the woven fabric.

In general, fabric fabrics woven with warp and weft yarns will bend to weft yarns when weaving, and if the weft yarns are not corrected before dyeing or tenting, the fabrics will be cut. It cannot be commercialized.

The automatic tooling corrector is a device that makes the weft and warp form a grid of exactly 90 degrees by automatically correcting the warp generated in the weft of the fabric during the weaving of various fabrics before performing the dyeing process or the tent process.

1 is a front view illustrating an example of an automatic tool corrector, and FIG. 2 is a cross-sectional view illustrating the automatic tool corrector of FIG. 1.

1 and 2, a general automatic tool corrector 10, which is mounted on the frame 20, as shown in Figures 1 and 2, for correcting the entering fabric fabric, that is, the angle is skewed to correct the weft generated The skew roller 30 and the bow roller 40, and the skew roller 30 and the skew roller 30 is mounted to the lower portion of the frame 20 to be located below the bow roller 40, skew Weft detection device 60 for detecting the weft angle of the fabric fabric corrected in the course of passing through the roller 30 and the bow roller 40. In addition, a control unit (not shown) for controlling the skew roller 30 and the bow roller 40 to accurately correct the weft of the fabric fabric based on the information on the weft angle detected by the weft sensing device 60. .

The weft detecting device 60 includes a light emitting unit 55 and a light receiving unit 65. The light emitting unit 55 emits light toward the fabric fabric 1, and the light receiving unit 65 is a light emitting unit 55. The light emitted through the fabric fabric (1) receives the light to detect the angle of the weft is to determine whether the bending occurs in the weft.

Such weft detecting device 60 is essential to the automatic tool corrector 10 to detect the weft of the fabric fabric 1 to be corrected, the automatic tool corrector 10 is appropriate to correspond to the width of the fabric to be corrected In order to be able to ensure that it is preferable to have a plurality of weft sensing devices arranged in parallel to the width direction of the fabric fabric 1, passing through the central lower position of the frame 20.

3 is a conceptual diagram schematically showing an example of the arrangement structure of the weft sensing device for automatic tool corrector, and FIG. 4 is a conceptual diagram schematically showing another example of the arrangement structure of a weft sensing device for an automatic tool corrector, FIG. 5 is a conceptual diagram schematically showing another example of the arrangement structure of the weft sensing device for the automatic tool corrector.

Specifically, as described above, the weft detecting device 60 for automatic tool corrector, as shown in Figure 3, the light-emitting portion 55 and the light-receiving portion 65 provided at the point where the fabric fabric 1 passes. A transmissive weft detecting device arranged to face each other with a space therebetween and sensing the weft in a manner of receiving the light emitted from the light emitting unit 55 and transmitted through the fabric fabric 1 from the light receiving unit 65; As shown in FIG. 4, the light emitting unit 55 and the light receiving unit 65 are located together on one side of the fabric fabric 1 and are emitted from the light emitting unit 55. Reflective weft detecting device for detecting the weft in the manner of receiving the light reflected by (1) in the light receiving unit 65; And a mixture of them, that is, one light emitting unit 55 and a light receiving unit 65 are disposed at one side and two light emitting units are disposed at one side of the fabric fabric 1 with two light emitting units passing therethrough. Only the portion 55 is disposed, it can be divided into a composite weft sensing device in which only one of the light emitting portion 55 is selectively operated.

Among the various types of weft sensing devices, any one suitable for the type of fabric fabric to be calibrated is used for weft sensing by being mounted on an automatic tooling corrector. Specifically, it is preferable that a weft detecting device of a transmissive weft detecting device is used as a weft detecting device of fabric fabric having excellent light transmitting property, and a reflective weft detecting device is used as a weft detecting application of a fabric fabric having poor light transmitting property. Therefore, when it is necessary to be used in general, regardless of the type of the textile fabric to enter, it is preferable that the composite weft sensing device capable of performing both the weft detection, both transmissive and reflective.

The light emitting unit 55 constituting the weft sensing device includes a light source that emits light, and the light emitted from the light source is not directly transmitted to the light receiving unit 65, but the light receiving unit 65 via the fabric fabric 1. To be delivered. For example, the description will be made based on the case of the transmissive weft detecting apparatus, and not all of the light emitted from the light source passes through the fabric fabric and is transmitted to the light receiving unit 65. That is, part is reflected or absorbed by the fabric fabric (1), the rest of the light is transmitted through the fabric fabric (1). As such, in the process of passing the light through the fabric fabric 1, the light is transmitted according to the shape of the weft of the fabric fabric so that the angle of the light directed to the light receiving unit 65 varies in various ways. The light having a specific angle component is received by the light receiving unit 65 to detect the bending of the weft generated in the fabric fabric (1). For reference, the reflective weft detecting device, except for the light transmitted from the light source of the light emitting unit 55, except for the light transmitted or absorbed through the fabric fabric, that is, the light reflected by the fabric fabric (1) receiving unit 65 It is only different from the transmission type weft sensing device.

The weft detecting device 60 is emitted from the light source of the light emitting unit 55 as the power is applied to the light passing through the fabric fabric 1 or reflected from the fabric fabric is received by the light receiving unit 65, in the weaving process It detects the bend generated in the weft of the fabric, and generates an electrical signal proportional to the degree of the bend. Information in the form of electrical signals sensed in this way is transmitted to the control unit, which enables the control unit to generate appropriate control signals for controlling the bow roller 40 and the skew roller 30, and thus the bow roller. The 40 and the skew roller 30 allow proper calibration of the fabric fabric.

On the other hand, the light source used in the light emitting portion of the weft sensing device as described above, it is preferable to prevent the generation of unnecessary noise signal and to be as excellent as possible straightness of the emitted light for precise detection of the weft angle.

6 is a perspective view showing an example of a light source for the weft sensing device according to the prior art.

In the past, incandescent lamps (not shown) have been widely used as light sources for weft sensing devices. However, since the light emitted from the incandescent bulb is not excellent in the straightness, the situation that acted as a factor limiting the accuracy of the weft correction through the automatic tooling calibrator.

To overcome this problem, as shown in FIG. 6, a weft sensing device having a plurality of LED type light sources 80 of a type in which a plurality of LEDs (Light Emitting Diodes) 75 are integrated on a substrate 77 is developed. It has been. The LED 75 is a light emitting device that has been recently improved in performance and is used for various purposes, and has various advantages such as excellent linearity of emitted light, low power consumption, and semi-permanent use. It has a very good suitability for the use of the weft sensing device. In addition, by fabricating a plurality of LEDs 75 in a constant spaced array form, the fabric fabric passing through the target area by emitting light having excellent straightness and a constant light toward the target area having a predetermined area (1) To improve the accuracy of the weft detection for).

However, the multiple LED type light source 80 as described above, even if the same current is applied to the plurality of LEDs 75 used, a difference occurs in the amount of light emitted from the individual LEDs 75 over time. . That is, when the same current is applied, even though the first level of light is initially displayed, as the use time is accumulated, the amount of light of the individual LEDs is changed non-linearly, making it difficult to provide a constant amount of light to the target area. There is a problem losing. This problem acts as a factor that prevents accurate weft detection, and furthermore, as the calibration is performed based on inaccurate information, the calibration quality of the fabric fabric made by the automatic tooling calibrator may be deteriorated. will be.

In order to solve the problems of the prior art as described above,

The present invention uses an LED that has excellent straightness, low power consumption, and semi-permanent use, and weft detection for automatic tool corrector can continuously perform accurate weft detection even if the light quantity of the LED changes with the use time. The purpose is to provide a device.

The present invention for realizing this,

In the weft detecting device for automatic tool corrector for correcting the weft of the fabric fabric,

A light emitting unit including a single LED emitting light toward a fabric fabric, and a convex lens positioned on a path of light emitted from the LED and converting light emitted in a radial form from the LED into a parallel light form; And

It provides a weft detecting device for an automatic tooling corrector comprising a; light-receiving unit is emitted from the LED to receive light through the fabric fabric.

The light emitting unit may further include a hollow light guide tube positioned between the LED and the lens.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. For reference, the same reference numerals will be used to refer to the components corresponding to those of the prior art.

7 is an exploded perspective view showing a light emitting part of the weft sensing device according to the present invention, Figure 8 is a cross-sectional view schematically showing the light emitting part of the weft sensing device according to the present invention.

Weft sensing device for automatic tool corrector according to a preferred embodiment of the present invention, as shown in Figure 7 and 8, the light emitting unit using one LED 110 as a light source for emitting light toward the fabric fabric ( 100). The light emitting unit 100 includes a convex lens 120 disposed on a path of light emitted from the LED 110 in addition to the LED 110. The lens 120 serves to extend the area on the fabric fabric illuminated by the light emitted from the LED 110. That is, the convex lens 120 converts the light emitted from the LED 110 in the form of parallel light, and is incident to the wider target area in the form of direct light, thereby having an effect similar to using a plurality of LEDs as a light source. Make it work. In other words, even when using a single LED as a light source, it is possible to provide enough light for weft detection.

However, the light emitting unit 100 of the weft sensing device according to the present invention, in view of the absolute amount of light, the large amount of light emitted than the LED used in the prior art using a large number of LEDs as a light source, a large LED (110) It would be desirable to use. Of course, it does not need to be directly proportional to the sum of the amounts of light emitted by the multiple LEDs.

In addition, the light emitting unit 100 of the weft detecting apparatus according to the present invention includes a hollow light guide tube 130 disposed between the LED 110 and the lens 120. The light guide tube 130 serves to block the light emitted from the LED 110 from leaking to the outside while reaching the lens 120. Thus, more efficient lighting is possible. In detail, the length of the light guide tube 130 is adjusted according to the focal length of the convex lens 120 to reach the convex lens through the hollow light guide tube. It can be converted to a balanced light form to illuminate a wider area.

Weft sensing device according to the present invention, as in the prior art includes a light receiving unit. The light receiving unit 65 is emitted from the LED 110 of the light emitting unit 100 to receive the light through the fabric fabric.

The light receiving unit 65, like the light receiving unit of the related art, receives the light incident through the fabric fabric 1 to sense the weft of the fabric fabric. Information about the weft detected by the light receiving unit 65 is transmitted to the control unit (not shown) in the form of an electrical signal, the control unit generates an appropriate control signal based on the received signal to configure the automatic tool corrector 10 The bow roller 40 and the skew roller 30 are transferred to the bow roller 40 and the skew roller 30 so that the bending caused in the weft of the fabric fabric during the weaving process can be corrected through the bow roller and the skew roller.

The weft sensing device according to the present invention as described above, as in the prior art, may be provided as a weft sensing device of various arrangements.

Specifically, as shown in FIG. 3, the light emitting unit and the light receiving unit are disposed to face each other with a point where the fabric fabric passes through, so that light emitted from the light emitting unit and transmitted through the fabric fabric is received by the light receiving unit. It may be provided as a transmissive weft sensing device for sensing the weft.

And, as shown in Figure 4, the light emitting portion and the light receiving portion is disposed together on one side of the point passing through the fabric fabric, the light emitted from the light emitting portion reflected from the fabric fabric in the manner of receiving the weft in the light receiving unit It may be provided as a reflective weft sensing device for sensing.

In addition, as shown in Figure 5, consisting of a configuration including two light emitting portion, only one light emitting portion is disposed on one side and the light emitting portion and the light receiving portion is disposed together on the other side, based on the point where the fabric fabric passes, It may be provided as a composite weft detecting device for detecting the weft in a manner that the light received by the light-receiving unit is emitted from any one of the light emitting portion through the fabric fabric. For reference, such a composite weft sensing device emits light by selectively operating any one of two light emitting parts. That is, the weft sensing method can be appropriately selected according to the type of fabric fabric to be calibrated. Therefore, by selection, in the case of a fabric fabric having excellent light transmitting property, the weft can be detected by a transmissive type, and a reflection type of the fabric fabric having excellent light reflecting property.

By providing a weft detecting device for automatic tooling corrector according to the present invention as described above, the present design uses a LED that is excellent in straightness, low power consumption and semi-permanent use as a light source, but using only one LED, and relatively By using the lens to inject light with equal amount of light in a wide target area, it is possible to provide sufficient light for weft detection while preventing the unevenness of light in the target area even if the amount of LED light changes with the use time. It is possible to obtain the effect that can continuously carry out accurate weft detection.

Although the present invention as described above has been shown and described with respect to specific embodiments, it is common in the art that various design changes and changes are possible without departing from the spirit and scope of the invention as indicated in the utility model registration claims. Anyone with knowledge will know it easily.

Claims (2)

In the weft detecting device for automatic tool corrector for correcting the weft of the fabric fabric, A light emitting unit including a single LED emitting light toward a fabric fabric, and a convex lens positioned on a path of light emitted from the LED to convert light emitted in a radial form from the LED into a form of parallel direct light; And A light-receiving unit that receives all the light passing through the fabric fabric after all the parallel direct rays of light passing through the convex lens pass through the fabric fabric on the straight path, and are disposed on the same straight path as the equilibrium direct light direction immediately before the fabric fabric; Weft detecting device for automatic tool corrector comprising a. The method of claim 1, The light emitting unit weft detection device for an automatic tool corrector, characterized in that it further comprises a hollow light induction pipe positioned between the LED and the convex lens.

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