JPH01292148A - Method for cloth inspection - Google Patents

Abstract

PURPOSE:To improve efficiency of cloth inspecting operation, by memorizing weave defects occurring in weaving in relation to fabric length divided into blocks and rapidly feeding a cloth to a desired block in cloth inspection. CONSTITUTION:Weaving defects, such as mispick 3 or warp yarn breakage 4, occurring during weaving are memorized in relation to weaving length 2 in a memory device 6. The weaving length is labeled with the block number obtained by allotting one 'TAN' [roll of cloth (about 12 yard)] to one block and the length from the starting end of the block. In cloth inspection, the cloth is rapidly fed to an end where a prescribed number or more of cloth defects per block are present and the block is then subjected to cloth inspection.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for inspecting woven fabric woven by a loom.

<Prior art> Conventionally, when determining the surface quality of a woven fabric woven by a loom, the woven fabric woven by the loom and wound around a cross roller is wound around another take-up roller in a fabric inspection machine. The unit fabric length (one fabric) is determined by passing through the fabric inspection section between the cross roller and the take-up reroller at a constant speed while the fabric is being removed, and the worker visually detects fabric defects and tallies them.
The surface quality was judged every time.

In addition, some machines detect stops due to weft insertion mistakes or warp breaks during weaving on a loom, and automatically inspect the fabric based on the number of stops, etc., but even when automatic inspection is performed, After that, as mentioned above, the fabric was inspected by the workers.

However, in such a fabric inspection process, workers must search for fabric defects in the fabric that is progressing at high speed.
This required a high level of skill and placed a heavy burden on the workers.

Therefore, as shown in Japanese Utility Model Application Publication No. 62-110297, an inspection method is proposed based on the storage contents of a storage device that stores at least the position of fabric defects on a woven fabric during weaving on a loom. The speed at which the fabric advances in the fabric inspection section of the winding machine is changed and controlled, and parts with no fabric defects, that is, areas that do not require fabric inspection, are fed at high speed, and areas with fabric defects, that is, areas that do not require fabric inspection, are fed at high speed. Some parts are fed at low speed.

(Problem to be solved by the invention) However, even with the fabric inspection method described in the above publication, the operator must constantly monitor the woven fabric while the fabric inspection machine is in operation, and must not leave the fabric inspection machine. However, there was a problem in that it was not possible to inspect the fabric using multiple inspection machines at the same time.

Furthermore, since the length measurement on the loom and the length measurement on the fabric inspection machine do not necessarily match exactly, there is also the problem that speed control near the position of a fabric defect is extremely difficult.

In view of such conventional problems, the present invention requires inspection of the portions where fabric defects exist, that is, the fabric defects, based on the memory contents of a storage device that stores fabric defects on the fabric during weaving on a loom. It is an object of the present invention to provide a fabric inspection method that allows fabric inspection to be performed only on parts, and also enables multiple fabric inspection operations or other operations to be performed in parallel.

<Means for Solving the Problems> For this reason, the present invention allows the woven fabric woven by a loom to be wound around a cross roller to be wound up by another winding roller, while the cross roller and the winding reroller are connected to each other. When inspecting the fabric by passing it through the fabric inspection section between the looms, the fabric is inspected based on the memory contents of a storage device that stores at least the number of fabric defects for each block that is divided into units of fabric length during weaving on the loom. A block is set for performing this, the winding roller is wound up to the starting point of the set block, then stopped, and then the block is inspected.

In the above inspection method, the operator or automatically sets a block to be inspected (a block with fabric defects), winds the take-up reroller to the starting point of that block, and then stops. Therefore, during this winding, the operator may be away from the fabric inspection machine, and after the machine has stopped, he or she can visually inspect the required blocks while waiting for instructions from the operator.

<Example> Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, a loom 1 includes a weaving length signal transmitter 2. Weft insertion error signal transmitter 3. A warp breakage number transmitter 41 and a manual defect input device 5 are provided.

The weaving length signal transmitter 2 outputs a weaving length signal indicating the weaving length by detecting the rotational speed of the main shaft of the loom. However, as shown in Figure 2, this is converted into the block number (reverse number) divided into units of fabric length (1 roll) and the yarn length (m) from the starting point of each block. Ru.

A weft insertion error signal transmitter 3 detects a weft insertion error and outputs a weft insertion error signal for stopping the loom. A warp breakage signal transmitter 4 outputs a warp breakage signal for detecting a warp breakage and stopping the loom.A manual defect input device 5 is provided for inputting defect details as necessary when the loom is stopped.

These devices 2 to 5 are connected to a storage device 6, which is connected to a weft insertion error signal transmitter 3. The contents of the fabric defect based on the signal from the warp breakage signal transmitter 43 and the manual defect input device 5 and the position of the fabric defect on the fabric (reverse number and the weaving length from the starting point of the reversal).

Note that this storage device 6 may be provided for each loom, or may be stored in all looms collectively as a host computer.

Therefore, if a weft insertion error occurs during the operation of the loom 1, the weft insertion error signal is transmitted from the weft insertion error signal transmitter 3, the loom is stopped, and the weft insertion error signal is input to the storage device 6. , the contents of the fabric defects are stored.

The storage device 6 also receives input from the weaving length signal transmitter 2, and stores the weaving length when the weft insertion error signal is input.

As a result, it is stored that, for example, there was a weft insertion error at the lom of reverse number 3. Finally, the number of fabric defects is also stored for each rotation.

After completing weaving of a predetermined fabric, the fabric is cut off, the cross roller is removed, and the fabric is set in a fabric inspection machine.

In the fabric inspection machine 7, a cross roller 8 is rotatably supported, and the woven fabric 9 pulled out from the cross roller 8 passes through guide rollers 10 and 11 and then passes through a pair of parallel pulling rollers 12.
．． The film is wound around a winding roller 14 placed on a winding roller 13.

The output shaft of a motor 15 is connected to one of the traction rollers 13, and the motor 15 rotates the traction roller 13 and rotates the take-up roller 14, so that the woven fabric 9 wound around the cross roller 8 is wound. It is wound up on the take-up roller 14.

A light source 7 such as a fluorescent lamp is provided on the back side of the woven fabric 9 between the guide rollers 10.11 through a glass plate 16.
It consists of 8. In the figure, M indicates a worker.
A visual inspection is performed by standing in front of the woven fabric 9 as it progresses.

The motor 15 is controlled by an inverter 20 by a control device 19.
It is rotationally driven through the , and in addition to rotating and stopping, the rotation speed is controlled.

The control device 19 is connected to the storage device 6 and also to a winding length signal transmitter 21 that outputs a winding length signal indicating the winding length of the winding roller 14 . Further, a keyboard 22 and a display 23 are connected.

Here, the control device 19 performs control according to the flowchart of FIG. 3 under instructions from the operator.

First, step 1 (marked as Sl in the figure. The same applies below)
Then, the memory content (defect data) stored in the storage device 6 is called up, and the 0 display content displayed on the display 23 in step 2 is at least the reverse number with the fabric defect,
and the number of fabric defects within that reversal.

In the next step 3, the operator's input is accepted, and the operator is allowed to set the reversal number (stop reversal number) to be inspected (multiple settings are possible). Here, the operator inputs from the keyboard 22 the reverse number with fabric defects or a large number of defects as the stop reverse number while looking at the display 23.

In this embodiment, the number of fabric defects is displayed for each block of unit fabric length, and the operator looks at this and inputs the stop reverse number to set it. The stop reverse number may be set based on the judgment.

When the stop reverse number is set, the reverse number counter T is set in step 4.
is set to 1, and then executes step 5 and subsequent steps.

In step 5, it is determined whether the value of the reverse number counter T matches the stopped reverse number. If NO, the process proceeds to step 6, where the motor 15 of the inspection machine 7 is rotated at high speed, and the winding roller 14 is rotated at high speed. winds up at high speed.

Then, in step 10, while reading the signal from the winding length signal transmitter 21, in step 11 it is determined whether or not the winding of one roll has been completed, and when the winding of one roll has been completed, in step 12 The reversal number counter T is incremented by 1, and in the next step 13 it is determined whether or not the final reversal number has been exceeded.If not, the process returns to step 5.

In this way, while monitoring the reverse number, the winding roller 14
is wound at high speed, and when the set stop rotation number is reached, the process proceeds from step 5 to step 7, and the motor 15 of the fabric inspection machine 7
is stopped, and the starting point of the block of the stopped reverse number is checked by the inspection part 18.
to be located. After this, in step 8, instructions from the operator are awaited.

If the operator returns to the fabric inspection machine at any time after this and gives an instruction to start fabric inspection from the keyboard 22, the process proceeds to step 9 and the motor 15 of the fabric inspection machine 7 is rotated at an appropriate speed. It is sufficient to inspect one roll in this condition. At this time as well, while reading the signal from the winding length signal transmitter 21 in step 7, it is determined in step 8 whether or not winding for one roll has been completed, and when this is completed, the reverse number counter T is read in step 9.
is incremented by 1, and in the next step 13 it is determined whether or not the final reversal number has been exceeded, and if it has not been exceeded, the process returns to step 5.

When it is determined in step 13 that the final reversal number has been exceeded, the process proceeds to step 14, where the motor 15 of the inspection machine 7 is stopped, and the entire process is completed.

In addition, when counting the reverse number, etc., the numbers are reversed during weaving and winding, so it is done by counting backwards, but this is omitted in the above explanation. However, in the case of water-jet looms, where the woven fabric is wound on a cross roller after being spun and then wound on another cross roller during the drying process, if the fabric is inspected afterwards, Since the length and the winding length match, there is no need to calculate backwards.

<Effects of the Invention> As explained above, according to the present invention, fabric inspection can be performed only on areas with fabric defects, that is, areas that require fabric inspection, and moreover, it is possible to perform multiple fabric inspection operations at the same time or in parallel. The effect is that you can perform other tasks.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the present invention, FIG. 2 is a diagram explaining reversal, and FIG. 3 is a flowchart showing control details. ■... Loom 6... Storage device 7... Inspection machine 8... Cross roller 9... Woven fabric 14...
Winding roller 15... Motor 18... Inspection section 19... Control device 20... Inverter 2
2... Keyboard 23... Display 8... Cross roller 14... Take-up roller 18... Inspection section Fig. 1

Claims (1)

[Claims] When inspecting a woven fabric that has been woven by a loom and wound around a cross roller while winding it up on another take-up roller, it passes through an inspection section between the cross roller and the take-up roller. During weaving, a block to be inspected is set based on the memory contents of a storage device that stores at least the number of fabric defects for each block divided into unit fabric lengths, and the fabric is wound up to the starting point of the set block. Wind up the take-up roller,
A fabric inspection method characterized by stopping the fabric and then inspecting the block.