KR20040080145A - Rotation-type weft sensing device for automatic weft-straightener - Google Patents

Abstract

PURPOSE: A rotary weft sensing device for an automatic textile straightening machine is capable of getting precise detection result regardless of angle change of weft, reducing parts thereof, reducing the production cost and productivity and miniaturizing products. CONSTITUTION: The weft sensing device for an automatic textile straightening machine contains a light receiving sensor part(100). The light receiving sensor part(100) comprises: a main body(60) containing a light source and a light path; a lens installed in front of the light path; a rotating device containing a driving plate(75) installed at the rear of the main body(60) and rotated; the weft sensing device which is installed in the center of the driving plate(75), sensing light at the rear of the light path; and an angle sensing device(90) sensing angle of rotation of the driving plate(75).

Description

ROTATION-TYPE WEFT SENSING DEVICE FOR AUTOMATIC WEFT-STRAIGHTENER}

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

In general, textile fabrics woven with warp yarns and weft yarns will bend or warp in the weft yarns when weaving, and the bending or warp yarns of the weft yarns generated will be dyed or tented. Fabrics cannot be commercialized unless previously calibrated.

Automatic woodworking corrector is a device that automatically corrects the bending or inclination of the weft of the fabric when weaving various textile fabrics before performing the dyeing process or the tent process.

1 is a perspective view showing an example of a wood cutting machine according to the prior art, Figure 2 is a cross-sectional view showing an example of the weft detection device for wood cutting machine according to the prior art, Figure 3 is a weft detection device according to the prior art Is an exploded perspective view showing an example of the light receiving sensor unit constituting the.

As shown in FIGS. 1 and 2, the general woodworking corrector 10 includes a plurality of weft sensing devices including a light source 4 and a light receiving sensor unit 3 mounted opposite to each other, and a sensed signal. And a skew roller (1: skew roller) and a bow roller (2: bow roller) that are driven according to a control signal output from the controller according to the detected signal, and a controller to amplify and convert the Is done. That is, a weft sensing device for sensing the weft of the fabric fabric to be corrected is essentially required, and a plurality of weft sensing devices are mounted on each of the left and right sides based on the center of the woodworking straightener.

In general, the weft detecting device for wood cutting machine according to the prior art, as shown in Figure 2, a light source 4 for emitting a strong straightness, and is emitted from the light source (4) transmitted through the fabric fabric (7) It consists of a light receiving sensor unit 5 for detecting one light. In other words, the light source 4 and the light receiving sensor unit 5 are mounted on the woodworking cutter in a state in which the light source 4 and the light receiving sensor unit 5 are separated on both sides of the fabric to be corrected, and the light emitted from the light source 4 is directly received by the light receiving sensor unit 5. Rather than being transmitted to the fabric fabric (7) can only be transmitted to the light receiving sensor (5).

All of the light emitted from the light source 4 is not transmitted to the light receiving sensor unit 5, but part of the light is reflected or absorbed by the fabric fabric 7, and the remaining light passes through the fabric fabric 7 to receive the light receiving sensor unit. (5) is delivered. When light passes through the fabric fabric 7, the angle of light transmitted varies according to the shape of the weft yarn of the fabric fabric. Thus, light having a specific angle component depends on the shape of the weft yarn. Received from the portion 5 is to detect the bend or inclination of the weft formed on the fabric fabric (7).

The light receiving sensor unit 5 will be described in detail. As shown in FIGS. 2 and 3, the light receiving sensor unit 5 is a light oil tool 20 and a film attached to the back side of the light oil tool 20. (30) and the board | substrate 40 attached continuously to the back surface of this film 30 are included. In more detail, the light tool 20 is formed with a plurality of through holes 22, the lens 21 is mounted on the front side of each through hole 20, respectively. In addition, the film 30 includes a plurality of slits 31 formed at positions corresponding to the number of the through holes 22 and the number of the through holes 22 formed in the light oil tool 20. Here, each of the slits 31 has different inclination angles. The substrate 40 includes a plurality of photosensors 41 mounted at positions corresponding to the positions of the slits 31 formed in the film 30, and the inclination angles of the photosensors 41 also correspond to slits. It has the same inclination angle as the inclination angle of (31).

The weft detecting device according to the prior art as described above is to transmit the light of the light source 4 to the light-receiving sensor unit 5 through the fabric fabric (7), which is defined as a transmissive weft sensing device.

The transmissive weft sensing device is electrically powered according to the degree of inclination and the degree of bending of the weft formed on the fabric fabric in the light receiving sensor unit 5 when the light transmitted from the light source 4 to the fabric fabric 7 is applied. To be converted into a signal. That is, the light passing through the fabric fabric (7) is collected in each lens 21 of the light tool 20, passes through the through-hole 22, and then the amount of light in each slit 31 formed in the film 30 This adjustment is transmitted to the photosensor 41. That is, since each of the slits 31 formed in the film 30 have different inclination angles, the amount of light passing through each of the slits 31 changes according to the bending or inclination of the weft. Each photosensor 41 of the substrate 40 generates a voltage proportional to the amount of light received, which is amplified and converted by a controller (not shown).

By detecting the degree of bending and inclination of the weft in the above manner, in accordance with the detected electrical signal to the control roller and the roller roller (2) by applying a control signal, the weft of the fabric fabric (7) It is a correction.

However, the transmissive weft sensing device according to the prior art as described above generally includes a film 30 having 11 to 15 slits having different angles, and the number of photosensors 41 having the same number of slits. As the slit-type sensing means composed of one substrate 40 was provided, it was necessary to provide an amplifying circuit composed of the same number of amplifiers (not shown) to enable one-to-one correspondence with each photosensor 41.

The amplifier constituting such an amplification circuit requires adjustment because a significant difference in signal detection amount occurs depending on the position and angle of the corresponding slit on the film. In other words, unless the amplification degree of the amplifier is separately adjusted, there is a large difference in the signal detection amount even when the same amount of light passes between the photosensors at the upper and lower ends with the largest inclination angle and the photosensors at the center.

However, under the same illuminance, it is impossible to obtain an accurate detection result by adjusting the average signal difference between the photo sensor at both ends and the photo sensor at the center. And it is difficult to adjust individually according to the position on the film, the more the larger the number of amplifiers, and as a result, it is very difficult to adjust all the amplifiers to the same conditions, there was a problem that accurate signal detection is impossible.

In addition, the presence of an amplifier circuit composed of a plurality of amplifiers means that a lot of occupied space is required, such a spatial burden is causing a lot of problems in miniaturization of the product.

In addition, the construction of an amplifier circuit with a plurality of amplifiers means that the circuit configuration must be complicated in order to connect the plurality of amplifiers. The increase in the parts cost accordingly leads to an increase in the production cost, and has a problem in that the frequency of occurrence of failure increases.

Invented to solve the problems of the prior art as described above,

The object of the present invention is to always obtain accurate detection results irrespective of the change of the weft angle of the fabric fabric to be detected, and it is easy to handle due to the reduction of the number of parts and the configuration is simplified, thereby reducing the productivity and production cost. It is also possible to provide a weft detecting device for automatic tooling corrector, which is advantageous in miniaturization of the product.

1 is a perspective view showing an example of an automatic tool corrector according to the prior art,

Figure 2 is a cross-sectional view showing an example of the weft detection device for automatic tool corrector according to the prior art,

3 is an exploded perspective view showing an example of the light receiving sensor unit constituting the weft detecting apparatus according to the prior art,

Figure 4 is a perspective view showing a light receiving sensor unit of the rotary weft detecting device according to an embodiment of the present invention,

5 is an exploded perspective view of FIG. 4;

6 is a rear view of FIG. 4;

7 is a conceptual diagram schematically showing a rotary weft detecting device according to the present invention;

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

45: frame 47: support bracket

50: light source 53: convex lens

55: axis of rotation 60: body

70: weft sensor 71: recessed part

73, 74: rotational limit 75: rotating plate

77: hollow shaft 79: pulley groove

80: stepping motor 81: belt

83: output shaft 85: main pulley

90: angle sensor 95: rotation limit bar

100: light receiving sensor

The present invention for realizing this,

In the weft detecting device for automatic tool corrector comprising a light source, a body having a light path, a lens mounted in front of the light path and a light receiving sensor unit having a weft sensor for detecting light from the rear of the light path,

The light receiving sensor unit includes a rotating means including a rotating plate (75) rotatably mounted on the rear side of the body, the weft detecting sensor installed at the center of the rotating plate, and an angle detecting sensor for detecting a rotation angle of the rotating plate. It provides a rotary weft detecting device for an automatic tooling corrector comprising a.

Here, the rotating plate has a pair of circumferential rotation limit jaw formed by forming a concave indent toward the center by a predetermined angular width at one side edge, the light receiving sensor is located on the same line as the reference line of the rotating plate and the concave portion It is characterized in that it further comprises a rotation limit bar fixed to be adjacent to the outer circumference to define the rotation range of the rotating plate.

In addition, the angle sensor is located on the same line as the reference line of the rotating plate and is characterized in that it is fixed to be adjacent to the outer peripheral side of the concave portion.

And, the body has an integral rotary shaft formed in a cylindrical shape at the rear end, the rotating means is mounted to the front of the rotating plate is formed in a hollow for rotatable coupling with the rotating shaft and a hollow shaft formed with a pulley groove on the outer peripheral surface And characterized in that it comprises a stepping motor mounted on the output shaft is the main shaft pulley interlocked with the hollow shaft and the belt.

In addition, the weft sensor is characterized in that consisting of a film having a single slit, and a substrate having a corresponding single photosensor.

BEST MODE Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Referring to the drawings shown in Figures 4 and 5, the rotary weft detecting device according to an embodiment of the present invention is a light source 50 that emits light with a strong straightness, and the fabric is emitted from the light source It consists of a rotating light receiving sensor unit 100 for detecting the transmitted light.

Light receiving sensor unit 100 according to an embodiment of the present invention is largely composed of a body 60, a rotation means, weft detection sensor 70 and the angle detection sensor (90).

The body 60 has a cylindrical shape and is mounted horizontally, and has a light path (not shown) passing through the center thereof, and a convex lens 53 is mounted at the front entrance of the light path. By forming the outer diameter of the rear end portion to a predetermined diameter, the integrated rotary shaft 55 is provided. The body 60 is fixed to the horizontal frame 45 using the support bracket 47 is maintained.

The rotating means is mounted on the front side of the rotating plate 75 for rotatable coupling with the rotating shaft 55 and the rotating plate 75 is attached to the weft sensor 70 in the center front of the rotating shaft 55 It consists of a configuration including a hollow shaft 77 and stepping motor 80 having an inner diameter corresponding to the outer diameter of).

The weft sensor 70 is composed of a film having a single slit and a substrate having a corresponding single photosensor, all angles within the rotation angle range in accordance with the rotation of the rotating plate 75 in the state attached to the rotating plate 75 Weft detection for

And, as shown in Figure 6, the rotating plate 75 is formed on the one side edge by the rotation limit bar 95 to be described later to form a concave inlet portion 71 inclined toward the center by a predetermined angle width at the edge It is provided with a rotation limiting jaw 73, 74 to physically limit the rotation range of the (75). That is, the indentation portion 71 having a circumferential width up to the same angular range in both clockwise and counterclockwise directions with respect to the zero point (0 °) on both ends of the horizontal reference line of the rotating plate 75 that matches the weft detecting sensor 70. ) Is formed, and preferably the concave portion 71 is formed to have a circumferential width corresponding to an angular range of ± 45 °.

In addition, the hollow shaft 77 has a pulley groove 79 for driving the belt on its outer circumferential surface.

The stepping motor 80 is to rotate the rotating plate by providing a rotational force to the hollow shaft 77 in a belt driving method, the main shaft pulley 85 is mounted on the output shaft 83, the main shaft pulley 85 The position of is mounted on the frame 45 to correspond to the position of the pulley groove (79). The stepping motor 80 is a motor that rotates discontinuously by a predetermined angle at a time, unlike a general motor that rotates continuously, it is possible to forward and reverse rotation. In addition, the rotation angle per step of the rotating plate 75 may be adjusted according to the diameter of the main shaft pulley 85 to be mounted, and the rotation angle per step falling within the range of 0.5 ° to 1.5 ° is preferably adjusted.

That is, the weft sensing device according to the prior art detects the weft using a plurality of photosensors that are individually installed to have a unique angle, the maximum difference determined by the photosensor located at the outermost and the angle difference between adjacent photosensors While the detectable angle is also impossible to change once determined, the weft detecting device of the present invention can increase or decrease the angular interval for performing the detection by adjusting the rotation angle per step according to the needs of the user, the maximum detectable The angle can also be varied within the geometric limits.

The angle sensor 90 is fixed to a position adjacent to the outer periphery of the concave portion 71 so as to be on the same line as the horizontal reference line of the rotary plate 75, the rotary plate 75 relative to the zero point (0 °) ) Will detect the rotation angle.

And, in order to limit the rotation range of the rotating means as described above, the end of the rotation limit bar is fixed so as to be adjacent to the outer periphery of the concave portion 71 in the same line as the horizontal reference line of the rotating plate 75 95 is provided, the rotary limiting jaw (73) 74 is provided as the concave inlet portion 71 is formed on the rotating plate 75 is physically constrained in both directions by the rotation limiting bar (95) by rotating plate 75 Physically prevent excessive rotation of the

In addition, the weft sensing device according to the present invention as described above is an amplifier (not shown) to amplify the electrical signal generated according to the amount of light detected by the weft sensing sensor 70, the electrical signal of the amplifier and the angle sensor By providing a control unit (not shown) for comprehensively calculating the angle of the rotating plate 75 sensed by the 90 to generate an output value, it provides a command signal for weft calibration of the fabric fabric to the automatic tooling corrector.

Referring to the operation of the weft detecting apparatus according to the present invention as described above are as follows.

As shown in Figure 7, the weft sensing device is to be positioned in the center of the fabric fabric 200 to be detected and the light source 50 is located on one side, the light receiving sensor unit 100 is located on the other side to the automatic tooling corrector Detect the weft of the fabric fabric while it is attached.

The light emitted from the light source toward the textile paper is partially absorbed or reflected, and the remaining light passes through the textile paper while having an influence according to the angle of the weft, and then enters the lens 53 provided in the body of the light receiving sensor unit 100. Done. The incident light forms a phase in the reverse phase at the center of the front side of the rotating plate 75 of the rotating means, and a weft sensor 70 is installed at the center of the position where the image is formed. Information about the weft is detected in the transmitted light containing the information about the weft.

The weft sensor 70 is a hollow shaft in which the pulley groove 79 is formed through the belt 81 is driven by the stepping motor 80 controlled by the control unit in the state attached to the rotating plate 75 of the rotating means As the rotating plate 75 is rotated in the forward and reverse direction by being transmitted to the 77, it senses the light incident while the angle of the moment changes itself, and transmits the electric signal to the controller through the amplifier. The angle of the rotating plate 75 is also transmitted to the controller.

In more detail, the light detected by the weft sensor 70 is amplified by the amplifier and then transmitted to a control unit (not shown), and after performing a calculation process in this control unit, a skew roller and bow provided in the automatic tooling corrector. It outputs a command signal to control the rollers to correct the weft of the fabric fabric. That is, while the angle of the weft sensor 70 changes as the rotary plate 75 rotates, an electrical signal generated according to the amount of light detected by the weft sensor 70 is input to the controller, and at the same time, the angle sensor 90 The angle value of the rotating plate (75) detected by the control unit is input to the control unit, and the control unit on the basis of the fact that the maximum electric signal is detected when the light incident through the weft of the fabric fabric and the weft sensor 70 are parallel. Calculate and determine the weft angle of the fabric fabric from the angle of the rotating plate 75 where the weft sensor 70 is installed at the moment when the largest electrical signal is generated through the calculation process, and based on the calculation, It outputs a command signal that controls the driving of the skew roller and the bow roller.

Such weft sensing device can be controlled in various operating modes through the control unit. First, the range of the detection of the oblique angle can be set within the circumferential width range of the concave portion 71 formed on the rotating plate 75. That is, in the case where the width of the concave portion 71 is formed to be ± 45 °, the maximum detectable angle may be extended to approximately ± 35 ° even if the rotation limit bar 95 is taken into consideration, for example, ± 10 ° and ± 15 degrees. Various angle ranges such as °, ± 20 °, ± 25 °, ± 30 °, and ± 35 ° can be used. That is, the control unit applies a control signal to the stepping motor 80 according to the angle value of the rotating plate 75 sensed by the angle detecting sensor 90 to perform the weft detection while repeating the forward and reverse rotation only within a predetermined range. .

As the weft detection device according to the present invention uses only one weft detection sensor, when the same amount of light is incident, the amount of light is constant at each angle, so that accurate detection results are always obtained regardless of the weft angle change. And only one amplifier needs to be used, so it is easy to adjust when it is necessary to adjust according to the type of fabric fabric. In addition, the rotation limit bar provided in the ± direction and the rotation limit bar located between the two rotation limit jaw to prevent excessive rotation physically to stop the rotation by protecting the connection wire even if excessive rotation occurs due to an operation error The calculation error may be prevented from occurring during the operation of the controller.

In addition, since a plurality of weft signals can be selected and detected by the controller, the present invention can be applied to a twill fabric having a second weft in a diagonal direction.

Overall, it is possible to always obtain accurate detection result regardless of weft angle change, and it is easy to handle and simple configuration due to the reduction of the number of parts, which can reduce productivity and production cost, and it is also advantageous for miniaturization of products. It has an excellent effect.

While the invention has been shown and described in connection with specific embodiments, it is conventional in the art that various changes, modifications and variations are possible without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone with knowledge of this will easily know.

Claims (5)

A light receiving sensor unit having a light source 50, a body 60 having a light path, a lens 53 mounted at the front of the light path, and a weft detecting sensor 70 for detecting light from the rear of the light path ( In the weft detecting device for automatic tool corrector comprising 100), The light receiving sensor unit 100 is a rotating means including a rotating plate 75 rotatably mounted to the rear of the body 60, the weft sensor 70 is installed in the center of the rotating plate 75, and Rotating weft detection device for an automatic tool corrector, characterized in that it comprises an angle sensor (90) for detecting the rotation angle of the rotating plate (75). The method of claim 1, The rotating plate 75 has a pair of circumferential rotation limit jaw (73) 74 to form a concave inlet portion 71 inclined toward the center by a predetermined angle width at one side edge, The light receiving sensor unit 100 further includes a rotation limit bar 95 positioned on the same line as the reference line of the rotating plate 75 and fixed to be adjacent to the outer circumference of the concave part to define a rotation range of the rotating plate 75. Rotating weft detection device for automatic tool corrector, characterized in that. The method of claim 2, The angle sensor (90) is located on the same line as the reference line of the rotary plate 75, the rotary weft sensing device for an automatic tool corrector, characterized in that it is fixed to be adjacent to the outer periphery of the opposite side of the recess 71. The method according to any one of claims 1 to 3, The body 60 has an integrated rotary shaft 55 formed in a cylindrical shape at the rear end, The rotating means is mounted to the front of the rotating plate 75 is formed in a hollow for rotatable coupling with the rotating shaft 55 and the hollow shaft 77 formed with a pulley groove 79 on the outer circumferential surface, and the hollow shaft ( 77) and the rotary weft sensing device for an automatic tooling corrector, characterized in that it comprises a stepping motor (80) mounted on the output shaft (83), the coarse pulley (85) interlocked with the belt (81). The method of claim 1, The weft sensor 70 is a rotary weft sensing device for automatic tool corrector, characterized in that consisting of a film having a single slit, and a substrate having a corresponding single photosensor.