JPH0512442U - Fabric spreading centering device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to surely perform centering without causing deformation or bending of the running cloth, and to cause the transferred cloth to have a winding around it. To provide a spreading centering device that does not have any problems. [Structure] A pair of left and right screw rolls (1a) arranged substantially parallel to each other along the width direction of the cloth on the running path of the cloth and configured so as to have different spiral directions and can rotate independently of each other. , (1b), drive motors (2a) and (2b) that independently control forward and reverse rotation of the left and right screw rolls (1a) and (1b), respectively, and a sensor that detects deviation of the running fabric. A controller for controlling the rotation of the drive motors (2a), (2b) based on the deviations detected by the sensors (3a), (3b) and the sensors (3a), (3b) to center the cloth ( 4) and are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, in order to continuously perform pre-treatment, post-treatment, etc. on a long fabric, it is possible to constantly control the transport of a fabric that is continuously transported in a predetermined device to the center of the transport path. The present invention relates to a spreading centering device for a cloth, which is capable of ensuring the spread state of the transfer cloth.

[0002]

[Prior Art]

 For example, when continuously manufacturing industrially produced long fabrics, such as hair-burning, desizing, scouring, bleaching, dyeing, washing, or other liquid treatment, this long fabric is used as a predetermined equipment. It is necessary to guide it to the guide rolls and run continuously. During this continuous running, the cloth must be run continuously while spreading the cloth so as not to shift from the predetermined position (center position) of the transfer path. The transferred fabric may shake in the axial direction of the guide roll due to horizontal accuracy, uniform outer diameter accuracy, quality accuracy of the cloth, etc. Extremely speaking, there is a problem that the fabric comes off the guide roll or becomes rope-shaped, which makes continuous running in the spread state of the fabric impossible. Therefore, in a transfer path where a long fabric to be continuously run is guided by a guide roll and transferred, the center of the cloth passes through the center of the transfer path, and the transferred cloth does not wind around. Thus, there is a spreading centering device for automatically spreading the running fabric.

As this conventional means, for example, there is a cross guider, but in the above cross guider, since the selvage ear of the cloth is sandwiched by at least two guide rolls, this cloth is used. With the mechanical force of the guider, for example, if a silk cloth that is prone to get loose or a knitted fabric that is easy to bend is centered, the fabric may be bent or deformed such that the good treatment cannot be achieved. is there. In addition, since the cross guider must have at least two inclined guide rolls as one set, and these combined guide roll groups must be arranged on both side ears of the cloth to be run, both of them are required. A space for arranging the guide rolls is required, and it is often impossible to install a cross guider in a device with a small space. Furthermore, it is necessary to adjust the working width according to the width of the cloth for the centering of spreading the cloth by the cross guider.

In order to solve such a problem, in Japanese Patent Laid-Open No. 63-196761, the cloths are arranged in parallel on the running path of the cloth along the width direction of the cloth, and the central portion in the width direction of the cloth is used as a boundary. The left and right outer peripheral surfaces are formed with reverse screw-shaped parts, and the left and right both sides are configured so that they can rotate independently of each other. Against each other, a variable speed motor that can control rotation independently of each other, a sensor that is installed near the spreading roller and that detects the cloth width ratio on the left and right sides of the running cloth, and the cloth width ratio detected by the sensor. Has proposed a centering / spreading device including a control device for controlling the rotational speeds of variable speed motors on the left and right sides of the spreading roller to center the fabric.

However, in such a centering / spreading device, the spreading roller on the side deviated from the normal position is operated at a low speed, and the other spreading roller is operated at a high speed, so that the cloth is returned to the normal position. However, there is a problem in that the centering ability is low and the centering cannot be performed when the fabric is largely displaced.

[0006]

[Problems to be solved by the device]

 The present invention has been made in view of the above-mentioned conventional problems, and makes it possible to reliably perform centering without causing deformation of a running fabric such as a shift or a bend. It is an object of the present invention to provide a spreading centering device that does not generate a torn or the like on the transferred cloth.

[0007]

[Means for Solving the Problems]

 The above-mentioned object is arranged on the running path of the cloth along the width direction of the cloth in a substantially parallel manner, and has a pair of left and right screw rolls configured to have different screw directions and to be able to rotate independently of each other. A drive motor that independently controls the forward and reverse rotations of the screw rolls on both the left and right sides, a sensor that detects the deviation of the running fabric, and the deviation that is detected by the sensor controls the rotation of the drive motor. And a spreading device centering device for controlling the centering of the cloth.

[0008]

[Action]

 Since the present invention is configured as described above, when the fabric is running without being displaced from the normal position, the sensor does not operate, the control signal is not output from the control device, and the drive motors on the left and right sides are Can rotate the left and right screw rolls at the same speed counter to the running direction of the fabric, and spread the fabric by the same amount from the widthwise center to the left and right sides. However, when the fabric is eccentric, the sensor sends an eccentricity detection signal to the control device, and the control signal is sent from the control device to the drive motors on both the left and right sides. Then, the screw roll is rotated in the same direction as the running direction of the fabric, while the other screw roll continues to rotate at the same speed against the running direction of the fabric. To work.

[0009]

【Example】

 An embodiment of a fabric spreading centering device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a configuration of a cloth spreading centering device, wherein (1a) and (1b) are arranged on a running path of the cloth (5) substantially parallel to the width direction of the cloth (5). A pair of left and right screw rolls that are provided and rotate independently on the left and right sides of the cloth (5) with the center portion in the width direction as a boundary. The screw rolls (1a) and (1b) are well-known spiral protrusions having different spiral directions, and are configured to have a spreading action when the cloth roll (5) rotates counter to the running direction. Has been done. (2a) and (2b) are drive motors that control the rotation of the screw rolls (1a) and (1b) independently of each other, and can be rotated forward and backward. A gear (6) is connected to the left screw roll (1a), a gear (7) is connected to the right screw roll (1b), and a gear (8) is connected to the left drive motor (2a). ), A gear (9) is connected to the drive motor (2b) on the right side. The gear (6) and the gear (8) are configured to mesh with each other by an endless chain (10), and the gear (7) and the gear (9) are configured to mesh with each other by an endless chain (11).

(3a) and (3b) are photoelectric sensors serving as sensors for detecting the deviation of the edge of the running cloth (5). In the embodiment, the screw rolls (1a) and (1b) are On the other hand, it is provided on the downstream side of the fabric (5). Reference numeral (4) is a control device for controlling the rotation of the drive motors (2a), (2b) by the deviation detected by the sensors (3a), (3b) to center the cloth (5).

Next, the operating state of the cloth spreading centering device configured as described above will be described.

When the edge of the cloth (5) is running without being displaced from the normal position, the photoelectric sensors (3a) and (3b) do not operate and the control signal from the control device (4). Is not output, and the left and right drive motors (2a) and (2b) operate to rotate the left and right screw rolls (1a) and (1b) at the same speed counter to the running direction of the cloth (5). .. Therefore, the screw rolls (1a) and (1b) spread the cloth (5) from the center in the width direction to the left and right sides by the same amount.

When the edge of the fabric (5) is displaced to the right, the amount of light received by the sensor (3a) on the left changes, so a displacement detection signal is sent to the control device (4). Is sent from the control device (4) to the drive motors (2a), (2b) on both the left and right sides, the right screw roll (1b) is decelerated at a low speed by the drive motor (2b), and the right screw roll (1b) is further decelerated. ) Is rotated by the drive motor (2b) in the same direction as the running direction of the fabric (5), and the left screw roll (1a) is directly moved by the drive motor (2a) against the running direction of the fabric (5) at the same speed. Since it continues to rotate, the spreading action on the left side becomes large, and the cloth (5) moves to the left side. When the fabric (5) is displaced to the left, the operation reverse to the above is performed.

Although photoelectric sensors are used for the sensors (3a) and (3b), air sensors, mechanical means, sensors for detecting the cloth width ratio on the left and right sides, and the like may be used. Needless to say.

[0016]

[Effect of the device]

 As described above in detail, according to the cloth spreading centering device of the present invention, the deviation of the cloth is detected by the sensor, and the screw roll on the side of the deviation is decelerated to a low speed by the detection, and the running direction of the cloth is further detected. While the other screw roll continues to rotate at the same speed against the running direction of the fabric, the deviation of the fabric is corrected, which is simple and efficient. It will be possible to perform spread centering, which is very useful.

[Brief description of drawings]

FIG. 1 is a plan view of a fabric spreading centering device of the present invention.

[Explanation of symbols]

 1a screw roll 1b screw roll 2a drive motor 2b drive motor 3a sensor 3b sensor 4 controller

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right screw rolls, which are arranged substantially parallel to each other along a width direction of the cloth on a running path of the cloth, are configured to have different spiral directions and can rotate independently of each other. 1a) and (1b), drive motors (2a) and (2b) that independently control forward and reverse rotation of the left and right screw rolls (1a) and (1b), respectively, and the deviation of the running fabric is detected. Control for controlling the rotation of the drive motors (2a), (2b) by the sensors (3a), (3b) that perform rotation and the deviation detected by the sensors (3a), (3b) to center the cloth. A fabric spreading centering device comprising: a device (4).