JPS6335872A - Method and apparatus for reversal control of cloth between take-up rolls - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for controlling the reversal of a fabric between winding rolls and a reversing control device thereof, and more specifically, to a method for controlling the reversal of a fabric between winding rolls facing each other. Dyeing, bleaching or cleaning while rewinding! When performing processing such as a, the present invention relates to a fabric reversal control method and a reversal control device.

BACKGROUND OF THE INVENTION A jigger is a conventional device for dyeing or otherwise processing a fabric while it is rotated between two take-up rolls. A jigger forms a travel path for the spread material to be processed between two wooden take-up rolls that are installed in parallel in a processing tank, using several guide rolls that are installed parallel to each other downward.
The lowermost idle roll is arranged so as to be immersed in the processing liquid staying in the processing tank. The object to be treated is subjected to dyeing and other treatments by alternately reversing and repeating winding and unwinding between these two wooden winding rolls (Japanese Utility Model Publication No. 33-8598).

Furthermore, Japanese Patent Publication No. 40-23990 discloses a device for detecting textures of parallel fabrics in which metal foil is sewn into the joints of the fabrics and detected by a non-contact proximity switch.

Problems to be Solved by the Invention The temperature and treatment liquid for the object to be treated are selected according to the characteristics of each material, but a temperature raising process to reach the treatment temperature, a constant temperature holding process, and a cooling process are performed. Therefore, the object to be processed expands and contracts during these steps.

When the object to be treated is reversed between two wooden winding rolls and subjected to dyeing or other treatments while this is repeated, the object to be treated similarly expands and contracts depending on the processing temperature. Therefore, if the number of rotations of the winding roll is kept the same as the initial number of windings, if the material is elongated during processing, a portion of the material will remain during winding and unwinding, resulting in an ending phenomenon in which the edge of the fabric is not processed. occurs. In addition, in the case of the treated material that shrinks during treatment, there is a problem in that the edges of the cloth come off.

In an attempt to solve this problem, it was considered to attach a longer guide cloth to the end of the material to be processed, but making the guide cloth longer would result in a reduction in the amount of winding around the roll in the processing tank. There is also an attempt to absorb the expansion and contraction by installing a dancer roll between the take-up roll and the guide roll, but the mechanism is complicated and the cost is high, making it difficult to put it into practical use. It has drawbacks such as difficulty.

Furthermore, as mentioned above, there is Japanese Patent Publication No. 40-23990 that detects seams in textiles, but this only detects the passing of running textiles, and winds up and winds them by expansion and contraction due to dyeing and other treatments. It does not include the idea of absorbing changes in fabric length during return.

It is an object of the present invention to solve the above-mentioned difficulties and to control the number of rotations of the winding roll according to the expansion and contraction of the object to be processed.

Means for Solving the Problems In order to achieve the above object, the method invention of the present invention provides a method for dyeing and other processing of the processed material while alternately reversing and repeating winding and unwinding between two winding rolls. In a processing method, two magnetic material parts provided at both longitudinal ends of the workpiece are detected back and forth between the two winding rolls according to the traveling direction, and the magnetic material part at one end is detected. The fabric reversal between the winding rolls is characterized in that only when it detects that the magnetic material at the other end passes after passing, the control unit sends a reversal command to each of the two winding rolls. This is the control method.

In addition, the apparatus invention provides a processing apparatus for dyeing or other processing of a workpiece while alternately reversing and repeating winding and unwinding between two winding rolls, wherein both ends of the workpiece in the longitudinal direction are a magnetic body part provided on each of the two winding rolls, a magnetic body detection part provided on the running path between the two winding rolls, and a control part controlling the drive of the two winding rolls based on a signal from the detection part. This control section sends a reversal command to each of the two winding rolls only when it detects that the magnetic material section at one end of the object to be processed has passed and the magnetic material section at the other end has passed. This is a fabric reversal control device between winding rolls.

Function In the present invention, as a method of controlling the reversal of the object to be processed, magnetic parts are provided at both ends of the object to be processed, and the reversal command is issued by the control section only after both are detected. Therefore, even if the fabric, etc. stretches by 1.5, expands or contracts, or L2 during dyeing or other processing, the magnetic body part is detected and the fabric is reliably driven, regardless of its actual length. Inconveniences such as coning no longer occur.

In addition, in the apparatus of the present invention, magnetic material parts are provided at the joints with the guide cloth at both ends of the workpiece, so when the workpiece is wound around two take-up rolls, the detection means detects two parts along the traveling direction. The magnetic material part can be detected reliably. In addition, the control unit does not issue a reversal command to the two take-up rolls until the two magnetic material parts are detected, so there is no inconvenience such as the edges not being processed during dyeing or other processing. It is no longer affected by the expansion and contraction of objects.

Example .

The embodiment shown in one drawing will be described below.

In FIG. 1, reference numerals 1 and 2 indicate take-up rolls, and two of them are installed in parallel inside and above a can body (not shown) having a closed structure. Reference numeral 3 denotes an object to be processed, which is driven in reverse so that it is wound onto one of the take-up rerolls 1.2 and unwound from the other take-up roll. 4 is a guide roller, a winding roll L,
It is located midway down between the two.

5.6 is a movable guide bar. The above winding roll 1
．． 2, guide rollers 4, and movable guide bars 5.6 constitute a travel path for the spread material to be processed. A shower pipe 7 is arranged on the guide roller 4 and sprays the processing liquid. Reference numeral 8 denotes a detection means, which uses a proximity switch or the like that uses magnetism to detect the state of proximity. 9 is the control section.

The drive sources 10.11 of the two winding rolls 1.2 are controlled by commands from the detection means 8.

Figure 2 shows a workpiece 3 such as a fabric, with conductors 1 at both ends.
512.13 and are respectively wound on two winding rolls 1.2. Reference numeral 14.15 denotes a magnetic body section having a magnetic body such as metal, which joins the guide cloth 12.13 and the end of the object 3 to be processed.

When winding the winding around these two winding rolls 1.2, it is desirable that one of the magnetic parts be located in front of the detection means 8, and installed so that one of the magnetic parts always passes through the detection means at the start of driving. .

The two magnetic body parts 14.15 are detected by the detection means 8 and sent to the control part 9, and the drive source 10.1 is
Two winding rolls 1 and 2 are driven via 1 and are adapted to be reversed.

Control of winding and rewinding is performed in the following steps.

One of the magnetic parts 15 of the workpiece 3 wound around one of the two winding rolls 1.2 is wound up in front of the detection means 8, and the magnetic parts 15 are taken up at the same time as the start of operation. The passage is detected and an output is sent to the control unit 9, but the control circuit of the control unit 9 waits for a reversal command to the drive source 1O1II until it receives an output from the next passing magnetic body part 14. It is in a state of being. Therefore, both of the magnetic body parts 14 and 15 always pass, so that the winding and unwinding directions of the workpiece 3 are reversed. Therefore, by providing these magnetic parts at both ends of the object 3,
Even if the fabric is elongated or contracted due to dyeing or other treatments, the process continues until the two magnetic parts pass, eliminating the phenomenon of ending where the edges of the fabric are left untreated.

Effects of the Invention In the method and apparatus of the present invention, the magnetic body parts provided at both ends of the object to be treated in the longitudinal direction are detected by the detection unit, and after the magnetic body part at one end passes, the magnetic body part at the other end passes. Only when this is detected, the control section sends a reversal command to each of the two take-up rolls, so that processing is always carried out to the ends of the object. Therefore, there is no risk of inconveniences such as ending occurring, and dyeing and other treatments can be performed reliably and quality can be improved.

In addition, even if the object to be processed expands or contracts, the timing of reversing the two winding rolls is such that the magnetic material at the end of the object passes through both, so there is no effect from expansion or contraction. Also, it is no longer necessary to attach a dancer roller or the like, which is a complicated mechanism as in the past.

[Brief explanation of the drawing]

Fig. 1 is a front view of main parts showing one embodiment of the device of the present invention;
The figure is a partially cutaway plan view of the object to be processed.

Claims (4)

[Claims] (1) In a processing method in which the workpiece is dyed or otherwise processed while winding and unwinding are alternately reversed and repeated between two winding rolls, The two magnetic body parts are detected back and forth between the two winding rolls according to the direction of travel, and only when the magnetic body part at one end passes and the magnetic body part at the other end passes. A method for controlling the reversal of a fabric between winding rolls, characterized in that a control unit sends a reversal command to each of the two winding rolls. (2) In a processing device that performs dyeing or other processing on a workpiece while alternately reversing and repeating winding and unwinding between two winding rolls, each is provided at both ends of the workpiece in the longitudinal direction. a magnetic material part, a magnetic material detection part provided on the running path between the two winding rolls, and a control part for controlling the driving of the two winding rolls based on a signal from the detection part; In the control section, after the magnetic material at one end of the object to be processed passes,
A reversal control device for fabric between take-up rolls, characterized in that a control unit sends a reversal command to each of the two take-up rolls only when the passage of the magnetic material portion at the other end is detected. (3) A fabric reversal control device between take-up rolls according to claim 2, wherein the two take-up rolls are installed in parallel in a high-pressure can. (4) The apparatus for controlling the reversal of a fabric between take-up rolls according to claim 2, which uses a spread-like fabric as the object to be processed.