KR101948736B1 - Rotation-type weft sensing device for automaticweft-straightener - Google Patents

Abstract

The present invention relates to a rotary weft detection device for an automatic weft proofing machine, and more particularly, to an automatic weft inspecting device for detecting an angle of a weft of a fabric by irradiating light to a fabric passing through an automatic weft proofing machine, An apparatus comprising: a housing having a lens through which light passing through a fabric passes; A step motor provided at the center of the housing and having a rotation axis rotatably driven; A sensor substrate provided on and coupled to a rotating shaft of the step motor; A weft detection sensor module provided on the sensor substrate, the center of which is aligned with the rotation axis of the step motor, the light passing through the center of the lens is directly incident on the central portion, and the angle of the weft yarn is sensed; A main board provided in the housing for microstep driving the step motor in fine units; And a center confirmation sensor provided on the main board to sense a rotation angle of the sensor substrate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic weft inspecting apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a warp detection apparatus for an automatic weft inspecting apparatus, and more particularly to a weft detection apparatus for an automatic weft proofing apparatus for detecting a warp and a warp of a fabric in a dyeing process of a woven fabric or a tent process will be.

Generally, the weft yarns are warped or inclined at the time of weaving, and the bending or inclination of the weft yarns is performed in a dyeing process or a tent Fabric can not be commercialized unless it is calibrated before the process.

Accordingly, when the weft of the fabric is warped and / or tilted at the time of weaving the fabric, the warp and weft of the weft and / or warp yarn is precisely positioned at an angle of 90 degrees Grid type).

The weft detection device for the automatic weft proofing machine is provided with a plurality of weft detection devices on the left and right sides respectively based on the center of the weft correcting device. The light amount of the light transmitted through the fabric is transmitted to the light receiving sensor, .

Such a conventional weft detection apparatus for an automatic weft proofing machine has been proposed in Korean Patent Laid-Open No. 10-2004-0080145 (hereinafter referred to as "prior art document") filed by the present applicant.

Such conventional prior art documents include a light source including a light source, a body provided with a light path, a lens mounted in front of the light path, and a light receiving sensor unit having a weft detection sensor for detecting light at the rear of the light path A weft detection device for an orthodontic appliance, comprising: rotation means including a rotation plate rotatably mounted to the rear of the body; a weft detection sensor provided at the center of the rotation plate; and an angle detection sensor And an automatic weft inspecting apparatus for an automatic weighing calibrator.

The rotation plate is provided with a pair of circumferential rotation restricting tines formed at one side edge thereof with a predetermined angular width oriented toward the center, and the light receiving sensor unit is located on the same line as the reference line of the rotation plate, And a rotation restricting bar fixed to the rotation restricting portion and defining a rotation range of the rotation disc.

The conventional weft sensing apparatus senses the weft of the fabric in a state where the fabric to be sensed is positioned at the center, the light source is positioned at one side, and the light receiving sensor is positioned at the other side.

The light emitted from the light source toward the fabric is partially absorbed or reflected and the remaining light is transmitted through the fabric with the influence of the angle of the weft and enters the lens provided in the body of the light receiving sensor unit. The incident light forms a phase in reverse phase at the center of the front side of the rotary plate of the rotating means and the weft detection sensor is provided at the center of the position where the image is formed so as to contain information about the weft of the fabric It senses information about weft in transmitted light.

The weft detection sensor is attached to the rotating plate of the rotating means. As the driving force is transmitted by the stepping motor controlled by the control unit, the angle of the moment itself changes as the rotating plate rotates in the forward and reverse directions. And the angle of the rotary plate at every moment is also transmitted to the control unit, and the control unit controls the skew roller and the bow roller provided in the automatic weft insertion straightener after performing the calculation process A command signal is output to correct the weft of the fabric.

That is, while the control unit rotates the stepping motor by a predetermined angle and the angle of the weft detection sensor is changed by rotating the rotary plate at the same angle, an electric signal generated according to the amount of light detected by the weft detection sensor is input to the control unit, When the angle of the light incident through the weft is matched with the angle of the weft detection sensor, the control unit calculates the change of the maximum electrical signal based on the detection of the change of the electrical signal. The control unit calculates and determines the weft angle of the cloth fabric from the angle of the rotating plate on which the sensor is installed and outputs a command signal for controlling the operation of the skew roller and the bow roller of the automatic weft barrel calibrator.

However, the conventional weft sensing apparatus for realizing such operation has a plurality of support brackets fixed on the frame, a body installed between the support brackets, and a body including a rotating shaft, a stepping motor, an output shaft, a moving pulley, a belt, There is a problem in that the structure is complicated due to a large number of parts such as a bar, a bar, and the like.

The weft detecting apparatus for the automatic weft proofing machine as described above and the technology therefor are described in detail in the following prior art documents, so that detailed description thereof will be omitted.

Korean Patent Publication No. 10-2004-0080145

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a weft detection apparatus for detecting warp and weft warp of a fabric, And to provide a rotatable weft sensing apparatus for an automatic weft proofing apparatus which can be manufactured simply at low cost.

According to another aspect of the present invention, there is provided a rotational weft-sensing apparatus for an automatic weft brace, comprising: an automatic weft inspecting apparatus for automatically detecting an angle of a weft of a fabric by irradiating light passing through the automatic weft- A rotary weft wound sensing apparatus for a calibrator, comprising: a housing having a lens through which light passing through a fabric passes; A step motor provided at the center of the housing and having a rotation axis rotatably driven; A sensor substrate provided on and coupled to a rotating shaft of the step motor; A weft detection sensor module provided on the sensor substrate, the center of which is aligned with the rotation axis of the step motor, the light passing through the center of the lens is directly incident on the central portion, and the angle of the weft yarn is sensed; A main board provided in the housing for microstep driving the step motor in fine units; And a center confirmation sensor provided on the main board for sensing a rotation angle of the sensor board.

At least one projecting portion sensed by the center confirmation sensor may be formed on the sensor substrate. The main substrate is axially coupled to the housing. The housing is provided with a plurality of coupling grooves Can be formed.

According to another aspect of the present invention, there is provided a rotatable weft-sensing apparatus for an automatic weighing calibrator, comprising a motor bracket on a housing of the weft-detecting apparatus, a sensor substrate rotatably mounted on one surface of the motor bracket, The number of parts can be drastically reduced as compared with the conventional weft sensing apparatus, so that the structure can be simplified, and the weft sensing apparatus can be manufactured easily at low cost.

Particularly, in the present invention, the center of the lens, the center of the weft detection sensor module, and the center of the rotation axis of the step motor are all aligned linearly so that the light passing through the center of the lens directly enters the weft detection sensor module, The step motor is provided in the center of the rotation shaft of the step motor. The step motor is rotated in a minute unit by a microstep drive by a micro-step driveable main substrate. Thus, in the prior art document, The number of components (at least two pulleys, belts, and other components) that are provided due to the straight line passing through the center of the motor shaft and the straight line passing through the center of the motor shaft are parallel to each other can be drastically reduced, In addition, in the prior art document, in order to subdivide the unit drive angle of 1.8 degrees of the step motor, Although adjusting the ratio, in the present invention, there is an effect that it is possible to implement the more precise drive to resolve the step motor in the microstep drive.

FIG. 1 is a configuration diagram showing a back side of a weft detection apparatus according to the present invention.
FIG. 2 is a view showing the separation of the housing and the substrate of the weft sensing apparatus according to the present invention.
FIG. 3 is a combined view showing another surface of the substrates provided in the weft detection apparatus according to the present invention.
4 is an exploded view of Fig.
5 is an enlarged view showing a rotation state of the sensor substrate in FIG.

With reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

The terms used in the present invention are defined in consideration of the functions of the present invention and may vary depending on the intention or custom of the user or the operator. Therefore, the definitions of these terms are meant to be in accordance with the technical aspects of the present invention As well as the other.

In particular, the term "and / or" used in the present invention is used to mean at least one of the elements listed before and after, and "one or more"

As used in the present invention, optional terms such as "first", "second", "one side" and "other side" are used to distinguish one component from another component, But is not limited by the terms.

In the present invention, "forming on a phase" and "forming on a side" do not mean only that the constituent elements are laminated directly on each other, but include the meaning that other constituent elements are formed between the constituent elements do. For example, "formed on the surface" means that a second component is directly formed in contact with the first component, and further, a third component is formed between the first component and the second component It includes the meaning that can be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rotational warp detection apparatus for an automatic weft insertion apparatus according to the present invention; FIG.

The weft detection apparatus 100 according to the present invention is an apparatus for detecting an angle of a weft of a fabric passing through an automatic weft brace.

First, the automatic weft proofing apparatus is provided with a plurality of weft detecting apparatuses 100, and the weft detecting apparatus 100 indicates the weft angle at each corresponding point. Thus, the automatic weft straightener can know the angle of the weft of the fabric at a plurality of points so that if the angles of the points are similar to each other, the fabric has a degree of inclination, and if the angles of the points are symmetrical about the center, It has a curvature. The weft detecting apparatus 100 senses and discriminates only the angle of the fabric at the corresponding point, and detects the inclination of the weft at the point. And the final determination of the warp and warp of the weft of the fabric takes place in the automatic warp calibrator.

In the weft sensing apparatus 100 according to the present invention, the rotational weft yarn sensor module 170 (FIG. 1) rotated by a sensor substrate 160, which will be described later, while irradiating a continuous moving fabric in the automatic weft- ) Is used to sense the angle of the weft of the fabric. Thus, in order to detect the angle of the weft using light, it is necessary to sense light in various directions. That is, in order to detect the angle of the weft, it is necessary to arrange the light sensor in various directions so that the angle of the accurate weft can be known.

In view of this, in the present invention, in order to configure the weft detection sensor module 170 to continuously sense light and to sense light in various directions, as shown in FIGS. 1 and 2, A housing 110 having an inner rectangular parallelepiped shape and sensing means for sensing the weft of the fabric directly inside the housing 110 and rotating means formed inside the housing 110 for rotating the sensing means.

The housing 110 is a rectangular parallelepiped. The housing 110 is provided with a cover including a glass plate through which light can be transmitted, and a cover provided with a connector (not shown) on the rear surface of the housing 110.

A lens (not shown) is provided on an inner front surface of the housing 110, a sensing means is provided behind the lens, and a rotating means is provided behind the sensing means.

As shown in FIGS. 1 and 2, a plurality of coupling grooves 111, to which a main board 120 to be described later, is slidably coupled, are formed on the upper and lower surfaces of the housing 110, And the main board 120 is easily fitted in the housing 110 in the axial direction by the coupling grooves 111 to improve the assembling property and the workability, Accordingly, the position of the main board 120 may be varied.

As shown in FIG. 2, a plurality of mounting blocks 112 for fastening and fixing a motor bracket 140, which will be described later, are provided on the inner surface of the housing 110, And a fastening hole in which a thread is formed on the inner peripheral surface is formed.

3 to 5, the sensing means includes a main substrate 120 slidably coupled to the housing 110, and a sensor substrate 160 disposed at a central portion of the main surface of the main substrate 120, And a center confirmation sensor 130 that detects the arrival of the sensor substrate 160 at the reference angle through the protrusion 161. [

A motor bracket 140 coupled to the main board 120 in a direction orthogonal to the main board 120 is provided on a rear surface of the main board 120. A front surface of the motor bracket 140 is provided with a step motor 150 And a sensor substrate 160 connected to the rotation shaft 151 and rotatable.

Since the sensor substrate 160 is provided in a rotatable manner in the present invention, only one slit of the sensor substrate 160 is required. For this purpose, a sensor substrate having only one slit in the center may be separately manufactured and used. Alternatively, a sensor substrate having thirteen slits may be used. In this case, only one slit is actually used .

The weft detection sensor module 170 is disposed at the center of the front surface of the sensor substrate 160 to detect the angle of the fabric. The center of the weft detection sensor module 170 is aligned with the center of the lens. The weft detection sensor module 170 is an optical sensor module for sensing the light emitted from the light source and passing through the fabric. The weft detection sensor module 170 outputs an electrical signal corresponding to the intensity of the received light. When the angle of the weft detection sensor module 170 matches the angle of the weft detection light, the weft of the fabric completely covers the slit of the weft detection sensor module 170 according to the movement of the fabric, The output signal of the weft detection sensor module 170 shows the largest variation range. The output signal of the weft detection sensor module 170 is transmitted to a control unit (not shown), and the controller analyzes the strength of the electric signal transmitted from the weft detection sensor module 170 to determine the state of the weft.

The weft detection sensor module 170 includes at least one or more optical sensors, and the number of the optical sensors included in the weft detection sensor module 170 can be appropriately adjusted as needed. Accordingly, in the present embodiment, as in the case of the sensor substrate 160 described above, the weft sensor module 170 has 13 optical sensor modules used in the past, but actually only one of the optical sensors is used.

In addition, the sensor substrate 160 may have at least one protrusion 161 formed on the outer circumferential surface thereof and may be sensed by the center confirmation sensor 130. In the embodiment of the present invention, as shown in FIGS. 4 and 5, A plurality of protrusions 161 are formed on the outer circumferential surface of the sensor substrate 160 so as to protrude in opposite directions to each other.

The center confirmation sensor 130 and the sensor substrate 160 are used to detect that the rotation angle of the sensor substrate 160 reaches a reference angle The center confirmation sensor 130 checks the signal of the center confirmation sensor 130 when the sensor substrate 160 reaches the reference angle (for example, 0 degree) For example, 0 degrees).

As shown in FIGS. 4 and 5, the central confirmation sensor 130 includes a light source on one side and a light sensor on the other side, which are provided in the main substrate 120, The incident light is incident on the optical sensor. Accordingly, when there is no protrusion 161 (a shield) of the sensor substrate 160 between the light source and the optical sensor, the optical sensor senses the light emitted from the light source, but the sensor substrate 160 When the protrusion 161 is positioned, the light emitted from the light source can not be incident on the optical sensor.

On the other hand, protrusions on one side of the protrusions 161 formed on the sensor substrate 160 are provided so as to pass through the center of the center confirmation sensor 130. The projection 161 of the sensor substrate 160 passes through the light source and the optical sensor formed on the center confirmation sensor 130 to shield the light emitted from the light source while the sensor substrate 160 rotates, Is output to the control unit and transmitted. The control unit sets the reference angle to the light shielding state by the protrusion 161 of the sensor substrate 160 so that the angle of the sensor substrate 160 calculated by the control unit and the angle of the actual sensor substrate 160 Can be corrected.

The stepping motor 150 rotates by one unit angle when the characteristic of the motor gives one pulse by the control unit. One unit angle of the stepping motor 150 is a commonly used two-phase stepping motor, Lt; / RTI > If such a step motor 150 is used as a control unit capable of microstepping, it can be controlled by dividing it into one unit angle roll microsteps (1/4, 1/8, 1/16, and the like). That is, since the control unit generates the step for driving the motor, the rotation angle of the present motor can be known by calculating the number of steps in the control unit. However, if the motor gives a pulse to the control unit for some reason, the control unit calculates the rotation angle by calculation in the case where the motor can not move to the corresponding pulse, but the actual motor may not move so much, The angle of the motor and the angle of the actual motor can be different. In this case, the center confirmation sensor 130 is configured.

As shown in FIGS. 4 and 5, the rotating means is provided with a motor bracket 140 which is coupled and fixed in a direction orthogonal to the main board 120 of the sensing means.

A sensor substrate 160 is provided on the front surface of the motor bracket 140, and a step motor is fixed on the rear surface.

The stepping motor 150 is a two-phase stepping motor. In the present invention, since the stepping motor 150 is driven by using a microstepping motor driver, It is possible to finely divide the rotation angle in a multiple of 1/2, 1/4, 1/8, 1/16, and so on, and in this embodiment, And the step motor 150 of the present invention is configured to have a unit rotation angle of 0.225 degrees.

Here, there is no separate microstep motor, and if the driver IC driving the stepping motor supports the microstep function, the general stepping motor can also be driven by the microstep.

The step motor 150 is capable of fine rotation of the sensor substrate 160 through the rotation shaft 151 which is rotated in the forward and reverse directions through the motor bracket 140. The sensor substrate 160 And a sensor bracket 180 which is directly coupled and fixed to the rotary shaft 151. The sensor bracket 180 is fixed to the rear surface of the sensor substrate 160 and is fixed to the rotation shaft 151 in a key manner.

Therefore, the sensor substrate 160 is safely protected from impact or vibration generated in connection with the rotation shaft 151 by the sensor bracket 180, so that accurate and precise sensing operation can be performed.

The process of detecting the weft state of the fabric by the rotational weft detection apparatus for an automatic weft adjuster according to the present invention will now be described.

The control unit drives the step motor 150 by microstepping by 1/8 of a step and rotates so that the weft detection sensor module 170 rotates 0.225 degrees.

Light emitted from a light source whose position is fixed under these conditions passes through the fabric, passes through a lens (not shown) of the housing 110, and then enters the weft detection sensor module 170.

Then, the output signal of the weft detection sensor module 170 and the output signal of the center confirmation sensor 130 are both transmitted to a control unit (not shown), and the control unit outputs the output signal of the weft detection sensor module 170 at the current angle, And receives the output signal of the center confirmation sensor 130 for a predetermined time. At this time, when the weft detection sensor module 170 has an angle equal to the angle of the weft yarn, the largest signal change occurs, and the controller controls the weft yarn sensor module 170 for a predetermined time (hereinafter referred to as "A time & The output signal of the weft detection sensor module 170 is continuously received. As a result, it is possible to know the output value of the weft detection sensor module 170 for a predetermined time when the sensor substrate 160 is at a specific angle.

Since the process is continuously performed, the control unit receives the output signal of the weft sensor module 170 in units of a unit rotation angle of 0.225 degrees, which is one-eighth step of the sensor substrate 160, And receives the output signal of the sensor module 170.

Meanwhile, the weft sensing apparatus 100 is rotated by a minute unit rotation angle, and a series of processes for receiving and processing the output signal of the weft detection sensor module 170 are continuously performed within a range of sensing angles So that the number of times A time required for a series of processes should be minimized. On the other hand, if the number of times A required for the series of processes is too short, the weft of the fabric needs to be moved in the direction of the far end to change the signal, If we finish the process of receiving and processing the signal, we can not get a proper weft angle.

Therefore, according to the moving speed of the fabric, the time A must be shortened so long as the moving speed is fast, and the time A must be appropriately adjusted so that the time A is long if the moving speed of the fabric is low.

The weft sensing apparatus 100 operates as described above. The weft sensing apparatus 100 includes a main board 120 having a center confirmation sensor 130, a motor bracket 140 having a step motor 150, a sensor bracket 180 The weft sensing device 100 of the present invention can be manufactured at a low cost by simplifying the structure and reducing the number of parts compared with the conventional weft sensing device. ) Can be easily manufactured.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: weft detection device 110: housing
111: coupling groove 112: mounting block
120: main board 130: center confirmation sensor
140: motor bracket 150: step motor
151: rotation shaft 160: sensor substrate
161: protrusion 170: weft detection sensor module
180: Sensor bracket

Claims (3)

An automatic weft inspecting apparatus for an automatic weft inspecting apparatus, which is provided in an automatic weft proofing apparatus and detects an angle of a weft of a fabric by irradiating light to a fabric passing through an automatic weft proofing apparatus,
A housing having a lens through which light passing through the fabric passes;
A step motor provided at the center of the housing and having a rotation axis rotatably driven;
A sensor substrate provided on and coupled to a rotating shaft of the step motor;
A weft detection sensor module provided on the sensor substrate, the center of which is aligned with the rotation axis of the step motor, the light passing through the center of the lens is directly incident on the central portion, and the angle of the weft yarn is sensed;
A main board provided in the housing for microstep driving the step motor in fine units; And
And a center confirmation sensor provided on the main board for sensing a rotation angle of the sensor board,
Wherein at least one protrusion detected by a center confirmation sensor is formed on the sensor substrate.
delete The method according to claim 1,
Wherein the main board is axially coupled to the housing and the housing is formed with a plurality of engagement grooves slidingly coupled to the main board at a position where the main board is coupled to the rotatable weft-sensing device.

Images