JPH0428654A - Cloth continuously-enlarging device - Google Patents

Abstract

PURPOSE:To prevent hunting by precluding deviation being detected even if a cloth to be transferred is oscillated somewhat crosswise, which has the ear edge portions served as dead zones between an outside sensor and an inside sensor. CONSTITUTION:Sensors (6a, 6b), (6c, 6d) which detect the deviation of the ear edge portions on both sides of a cloth 1 are placed outside and inside of the ear edge portions on both sides of the cloth, respectively. In this way, the ear edge portions of the cloth 1, when running between the sensors (6a, 6b), (6c, 6d) outside and inside thereof, are served as dead zones to preclude a deviation signal from being sent to a control mechanism 7 and to prevent hunting phenomenon.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a continuous fabric spreading device having a cross guider used in various processing devices such as fabric dyeing devices.

(Prior Art) Traditionally, ear wraps that occur on running fabrics, l! As a continuous spreading device for making corrections such as the above, there is a known cross guider which is configured to spread the cloth by bringing opposed rolls closer and in contact with each other by detecting the edges of the fabric.6 In addition, this cross guider There are also known devices that automatically adjust the distance between the two when the width of the fabric to be transferred changes.

This continuous spreading device for fabric will be briefly explained based on FIG. 2. This continuous spreading device is arranged parallel to the width direction of the fabric (1) on the running path of the fabric (1), and spreads the fabric from the middle to both ends. Similarly, a screw rod (2
) and a drive motor (3) that controls the rotation of the screw rod (2).
and cross guiders (5a) and (5b) respectively attached to a pair of cross guider holding members (4a) and (4b) which are screwed and held by the rod (2), and the cross guider holding member. Sensors (4a) and (4b) for detecting the deviation of the ends of both sides of the fabric (1)
6a), (6b) and the sensor (6a)
, (6b) causes the drive motor (3
) to drive the cross guiders (5a) and (5
b) in the direction of correcting the deviation.For example, when a narrow fabric (1) is transferred, the sensors (6a) and (6b) detect the deviation. The position is detected, and this deviation detection signal is sent to the control mechanism (7), which drives the drive motor (3), so that the cross guiders (5a) and (5b) move in the direction where the distance becomes narrower. Thus, the cloth stops at intervals corresponding to the narrow width of the fabric (1).

(Problem to be Solved by the Invention) However, in such a continuous fabric spreading device, only one sensor is provided on the cloth holding member, corresponding to each side edge end of the fabric. Even when there is a slight deviation, a deviation detection signal is sent to the control mechanism, causing problems such as hunting in operation and placing a load on the drive motor.

Furthermore, since the screw rod is composed of one shaft,
This method has the disadvantage that the cross guider can only be operated to widen or narrow it, and the fabric running path cannot be set at an arbitrary position. Therefore, when using a guide cloth to remove dirt adhering to the end of a guide roll of a hot flu dyeing machine, for example, remove the guide cloth from the cross guider and swing the guide cloth by hand in the width direction. However, there are problems in that the work in which the worker holds the guiding cloth in his hands and swings it is inefficient and even dangerous.

The present invention has been made in view of the above-mentioned problems, and includes:
It is an object of the present invention to provide a continuous fabric spreading device that can prevent hunting operations and set a fabric running path at an arbitrary position.

(Means for solving the problem) The above object is to be arranged on the running path of the fabric in parallel with the width direction of the fabric, and to rotate independently of each other on both the left and right sides with the center part of the fabric in the width direction as the border. A screw rod, a drive motor that controls rotation of the screw rod independently of each other, a cross guider attached to each of a pair of cross guide holding members screwed and held by the screw rod, and a cross guider provided on the cross guide holding member. four sensors located on the outside and inside of the selvage ends on both sides of the fabric to detect the deviation of the selvage ends of the fabric; and the drive motor driven by the deviation detected by the sensors. , Is it possible to move the above cross guider in the direction of correcting the deviation? BI! This is achieved by a continuous fabric spreading device characterized by comprising a structure.

(Function) In the present invention, the sensors for detecting the deviation of the edge ends of both sides of the fabric are provided so as to be located outside and inside the edge ends of both sides of the fabric, so that the edge ends of the fabric are located outside and inside the edge ends of both sides of the fabric. When the vehicle travels between the inner sensors, it is possible to prevent the deviation detection signal from being sent to the control mechanism as a dead zone, making it possible to prevent the hunting phenomenon.

Further, since the screw rod is divided into left and right parts, and each is provided with a drive motor, the cross guider can be moved to any desired position, and the fabric running path can be set to any desired position.

(Example) Hereinafter, an example of the continuous fabric spreading device according to the present invention will be described in detail based on the drawings.

FIG. 1 is a front view showing the configuration of a continuous fabric spreading device, in which (2a) and (2b) are arranged parallel to the width direction of the fabric (1) on the running path of the fabric (1), and (3a) and (3b) are the screw rods (2a) and (2b), respectively, which are provided with spiral protrusions that rotate independently of each other with the center part in the width direction as the boundary of (1). The drive motors (4a) and (4b) for rotation control are the screw rods (2a)
), (2b) are screwed and held cross guiders, (5a) and (5b) are respectively attached to the cross guiders (4a) and (4b), (6a) and (6b). ), (6c),
(6d) is the cross-gay goo holding member (4a), (
4b) A photoelectric switch as a sensor for detecting the deviation of the edge of the fabric (1), which is located on the outside and inside of the edge of both sides of the fabric (1) provided in the fabric (1), respectively. Photoelectric swift (6a), (6b), (6c
), (6d) is a control mechanism that drives the drive motors (3a), (3b) to move the cross guiders (5a), (5b) in the direction of correcting the deviation.

Note that the cross guiders (5a) and (5b) are of a well-known structure, and the detailed structure thereof will not be explained here, but they are provided so as to be able to approach and separate from a fixed roll using the shaft end of the fixed roll as a fulcrum. It consists of a movable roll and a touch lever that detects the deviation of the selvage end of the fabric, and can grip the selvage end of the fabric as necessary, and can also release the selvage end of the fabric. It is composed of

Next, the operating state of the continuous fabric spreading device constructed as described above will be explained.

For example, when a narrow fabric (1) is transferred in the direction of the arrow, the light shielding of the photoelectric switches (6b) and (6c) is turned off, and a deviation detection signal is sent to the control mechanism (7). The drive motors (3a) and (3b) are driven, and the cross guiders (5a) and (5b) move in the direction where the distance becomes narrower and stop at an appropriate position according to the distance between the narrow fabrics (1). become.

On the other hand, when the wide fabric (1) is transferred in the direction of the arrow, the light shielding of the photoelectric switches (6a) and (6d) is turned on, and a deviation detection signal is sent to the control mechanism (7). Then, the drive motors (3a) and (3b) are driven, and the cross guiders (5a) and (5b) move in the direction where the distance becomes wider and stop at the appropriate position according to the distance between the wide fabrics (1). I come to do it.

Next, after the transfer of the fabric is completed, for example, when the full dyeing machine performs wiping of the guide rolls, the guide cloth is supplied to the real full dyeing machine, but when supplying this guide cloth, The drive motor (3aL (3b)) is driven to swing the cross guiders (5a) and (5b) alternately left and right in the same direction.

As a result of this operation, the guide cloth that replaces the fabric (1) is transferred while being reciprocated in the width direction of the guide cloth by the swinging motion of the cross guiders (5a) and (5b), and as a result, the guide cloth is moved to the end of the guide roll. This allows the surface to be effectively wiped down.

In addition, the above sensors (6a), (6b), (6c
) and (6d) use a photoelectric switch, but it goes without saying that an air type 1 mechanical means or the like may also be used.

(Effects of the Invention) As described in detail above, according to the continuous fabric spreading device of the present invention, even if the fabric to be transferred swings from side to side to some extent, the selvage end of the fabric can be removed between the outer sensor and the inner sensor. If there is a dead zone, no deviation is detected, so hunting can be prevented, no load is placed on the drive motor, and maintenance costs can be reduced.

Further, according to this device, since the guiding cloth can be swung in the axial direction of the guide roll, the frictional wiping force of the guiding cloth on the guide roll is strengthened. Since the roll can be moved to both the left and right ends, it is possible to effectively wipe the entire length of the guide roll.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the continuous fabric spreading apparatus of the present invention, and FIG. 2 is a front view showing a conventional example. Explanation of symbols (1)...Fabric, (2a), (2b)
... Screw rod, (3a), (3b) ... Drive motor, (4a), (4b) ... Cross guider holding member, (5a), (5b) ... Cross guider (6a), (6b), (6c), (6d) - Sensor (photoelectric switch (7)...control mechanism.

Claims (1)

[Claims] (1) A screw rod that is arranged parallel to the width direction of the fabric on the running path of the fabric and rotates independently on both sides of the cloth with the center part in the width direction as the boundary; a drive motor that controls the rotation thereof; a cross guider that is attached to a pair of cross guider holding members that are screwed and held by the screw rod; and four sensors located inside, respectively, for detecting the deviation of the edge end of the fabric, and driving the drive motor based on the deviation detected by the sensor,
A continuous fabric spreading device comprising: a control mechanism for moving the cross guider in a direction for correcting deviation.