JPH03124851A - Sensor for amount of wound fabric of loom - Google Patents

Abstract

PURPOSE:To obtain the subject apparatus, equipped with a fabric length setting means for cloth wound onto a fabric winding roll, a sensing means for the actual fabric length of the cloth and a means for sending a signal for resetting the actual fabric length ar zero when the difference between the set fabric length and the actual fabric length attains a prescribed value and capable of automating resetting operation. CONSTITUTION:A sensor provided with a fabric length setting means 1 for cloth (C) to be wound onto a fabric winding roll, a fabric length sensing means 2 for sensing the actual fabric length of the cloth and a signal generating means 3 for outputting a signal for resetting the actual fabric length at zero to the fabric length sensing means 2 when a compared value between the set fabric length and the actual fabric length attains a prescribed value is used to set the fabric length of the fabric winding roll 12 with a fabric length setter 29 and input the set length to a controller 28. The rotation of a surface roller 14 is sensed with a sensor 30 with winding of the cloth (C) onto the fabric winding roll 12 to calculate the actual fabric length of the cloth (C). The calculated fabric length is then compared with the set fabric length. If both coincide, the actual fabric length is reset at zero. A full roll delivery command is outputted to a delivery device 19 with the controller 28 to move the resultant full roll to a stocker 22 and set an empty fabric winding roll 25.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for detecting the amount of fabric on a fabric roll for replacing the fabric roll.

Conventional technology When a predetermined amount of fabric is wound onto a fabric roll and the fabric roll is fully wound, a series of fabric roll replacement operations are required, including cutting the fabric, unloading the fabric roll, loading an empty fabric roll, and wrapping the fabric end. Become.

This cloth roll replacement work is performed when the cloth roll is fully wound, the loom automatically stops, and a warning light turns on, allowing the operator to know when the cloth is finished. Furthermore, in a loom such as that disclosed in Japanese Patent Application Laid-Open No. 60-171956, when the cloth roll is fully wound, the cloth roll replacement work is automatically performed without stopping the loom.

In either case, in order to replace the cloth wrapper,
It is necessary to automatically detect whether the cloth roll is fully wound. This full spooling state can be detected by, for example, counting the number of rotations of the surface roller and the number of weft picks using a counter, calculating the actual length of the woven fabric to be wound onto the fabric roll from the counted values, and then determining the actual length of the woven fabric before weaving. This is done by equipping the loom with a cloth wrapping amount detection device that compares the set cloth length and the actual cloth length, and outputs a signal related to cloth wrapping roll replacement work when they match.

Problems to be Solved by the Invention In the cloth wrapping amount detection device as described above, it is necessary to reset the counter to zero each time the cloth wrapping roll is replaced. Conventionally, this zero-resetting operation was performed by the operator when the cloth wrapping work was completed. After checking, this was done by resetting the counter installed in the loom to zero. For this reason, even when the cloth roll replacement work is performed automatically, there is a drawback that the operator has to go all the way to the loom to get the rice. Also,
There is also a possibility that a worker forgets to reset the counter to zero, and that even though the fabric roll is fully wound, the full state is not detected.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cloth winding 1 detection device for a loom that does not require an operator to reset the detected actual cloth length to zero.

Means for Solving the Problems As shown in FIG. 1, the present invention comprises a cloth length setting means I for setting a predetermined cloth length of a woven cloth to be wound onto a cloth winding roll;
A cloth length detection means 2 detects the actual cloth length of the woven cloth, and a signal is provided to the cloth length detection means 2 to reset the actual cloth length to zero when a comparison value between the set cloth length and the actual cloth length reaches a predetermined value. and a signal generating means 3 for outputting.

Operation Before weaving, a work sound is used to set the set length of the woven fabric to be wound onto the cloth roll by the fabric length setting means 1.

During weaving, the fabric length detection means 2 detects the actual fabric length of the woven fabric, and when the comparison value between the set fabric length and the actual fabric length reaches a predetermined value, the signal generation unit 3 detects the actual fabric length. By outputting the length reset signal by 4°, the actual fabric length is reset to zero every time the fabric roll is replaced.

Embodiment FIGS. 2(A) to 2(E) apply an embodiment of the cloth winding amount detecting device according to the present invention; FIG. 3 is a flowchart showing the operation of the cloth wrapping detection device.

First, the configuration will be explained with reference to FIG. 2(A). The winding device is of a surface drive type and consists of a pair of rotating rolls 10. The cloth roll 12 is placed on If, and the cloth C is wound up by driving each rotating roll 10, 11 with a motor (not shown) to follow the cloth roll 12. The woven fabric C is moved from the weaving moe (not shown) to the guide bar 13 -> surf S roller 14 -> press roller 15 - guide bar 1
6 → guide bar 17 → guide bar 18 are guided to the winding device in this order.

Reference numeral 19 denotes a dispensing device consisting of an actuator 20 and a lever 21 for dispensing the fully wound cloth roll 12 to the stocker 22, and 23 denotes a locking device for locking the empty cloth roll 25 placed on the stocker 25. be. Further, 26 is a cutting device that cuts the woven fabric C by rotating a rotary blade with an air turbine and moving the rotary blade in the left-right direction when viewed from the front of the loom, and 27a and 27b are woven fabric C after cutting.
This is an air blowing device for winding the end portion of the cloth around the empty cloth winding roll 25.

Now, 28 is a control device of the loom including a cloth winding amount detection device, and is the above-mentioned dispensing device 19. Locking device 23, cutting device 2
6 and the air blowing devices 27a, 27b. This control device 28 receives set cloth length data from a cloth length setting device 29 that sets the cloth length of the cloth C at which the cloth roll 12 is fully wound, and the surface [rotation attached to the drive shaft of the J-ra 14]. Rotation detection signals are input from the sensor 30, and based on these human input signals, each device 19, 23, 26, 27a, as described later.

27b is controlled.

Next, the operation will be explained with reference to FIGS. 2(A) to 2(E) and FIG. 3. First, before weaving, 1 cloth roll
The working sound sets the cloth length at which the cloth length 2 becomes fully wound using the cloth length setting device 29. Then, when the working sound presses the setting button of the cloth length setting device 29, the set cloth length data is output, and the set cloth length is stored in the memory of the control device 28 (step S in FIG. 3).
l).

When the loom starts operating, the surface roller I4 is driven to rotate as the fabric C is wound around the fabric roll, and the rotation sensor 3 detects the rotation of the surface roller 14.
A rotation detection signal output of 0 is given to the control device 28, and the control device 289 counter starts counting the number of rotations of the surface roller 14 (step S2 in FIG. 3). and,
Based on the counted value of the counter, the actual length of the woven fabric C to be wound around the fabric roll 12 is calculated (step S3 in the third diagram).

Next, the set cloth length stored in the memory is compared with the actual cloth length obtained as a result of the calculation (step S4 in FIG. 3), and if they do not match, the set cloth length stored in the memory is compared with the actual cloth length as described in step S3. S4 is repeated. When the set fabric length and the actual fabric length do not match, no command is output from the control device 28 to each device 19, 23, 26, 27a, 27b, and the woven fabric C remains in the state shown in FIG. 2(A). Cloth roll! It is wound up in 2.

When the set cloth length and the actual cloth length match, the count value of the counter is reset to zero (step S5 in FIG. 3).

When the set fabric length and the actual fabric length match, it means that the fabric roll 12 has become fully wound (hereinafter, the fabric roll !2 at this time will be referred to as a fully wound roll), and almost at the same time as the above-mentioned zero reset operation. A full roll dispensing command is output from the control device 28 to the dispensing device 19, and as shown in FIG.
2 (step S6 in FIG. 3).

When the full roll is completely discharged and the lever 2I of the dispensing device 19 returns to the retracted position where it will not interfere with the empty fabric roll 25 in the subsequent process, the control device 28 issues an empty roll loading command to the locking device 23. The empty fabric roll 25 is transferred from the stocker 24 to the rotating roll 1 as shown in FIG. 2(C).
0.11 (step S7 in FIG. 3).

The empty cloth wrapping roll 25 is the rotating roll 10. When moved onto If, a cloth cutting command is output from the control device 28 to the cutting device 26, and the cloth C is cut as shown in FIG. 2(D) (step S8 in FIG. 3).

When the cutting of the woven fabric C is completed, a cloth wrapping command is output from the control device 28 to the air blowing devices 27a and 27b, and as shown in FIG.
As shown in E), the woven fabric C is wrapped around the empty fabric roll 25 by air.
The ends of the woven fabric C are brought into close contact with each other, and the woven fabric C is wound around the empty fabric winding roll 25 (step S9 in FIG. 3).

After this, the process returns to step S2, and steps 82 to S9
By repeating this, the cloth-wrapped roll replacement work is automatically repeated when the cloth-wrapped roll I2 becomes fully wound.

Note that the full roll placed on the stocker 22 is transferred to a carrier from a carrier store in the factory by a command from the control device 28, and is moved and placed on the carrier by the transfer arm of the carrier. Further, an empty fabric roll 25 is placed on the carrier, and the empty fabric roll 25 is moved and placed on the stocker 24.

As described above, in this embodiment, when the set fabric length and the actual fabric length match, the count value of the counter for detecting the actual fabric length of woven fabric C is automatically reset to zero. There is no need for a worker to come to the loom and reset the loom every time the roll is replaced. In addition, in the above operation, the zero reset operation is performed before replacing the cloth winding roll, but since the zero reset operation is performed at the same time when replacing the cloth winding roll for the first time, it is possible to wind the cloth into a full roll. The actual fabric length is the same as the fabric length set by the fabric length setting device 29.

Further, in the above-described embodiment, the count value of the counter indicating the number of revolutions of the surface roller 14 is reset to zero at the time when the fabric roll replacement work is started, that is, almost at the same time as the full roll delivery command is output. It is also possible to use a timer or the like to perform the zeroing operation after a predetermined time delay and after the fabric roll replacement work.

In addition, when performing operations such as checking whether the empty fabric roll 25 is placed on the stocker 24 before starting the fabric roll replacement work before the set fabric length and the actual fabric length match, the set fabric length and the actual fabric length are These operations may be commanded when the length comparison value reaches a predetermined value.

Furthermore, the actual fabric length may be detected by counting the pick number of weft yarns and based on the pick number count 1-° (and a preset weft density).

Effects of the Invention As described above, according to the present invention, when the comparison value between the set fabric length and the actual fabric length reaches a predetermined value, the fabric length detection means is configured to reset the actual fabric length to zero, so that it is easy to replace the fabric roll, etc. There is no need for a worker to come to the loom and reset the loom every time the loom is reset. Also, the situation where the reset work is forgotten is avoided.

[Brief explanation of the drawing]

Fig. 1 is a claim correspondence diagram showing the structure of the present invention, and Figs. 2(A) to 2(E) show the vicinity of the winding device of a loom to which an embodiment of the cloth winding amount detecting device according to the present invention is applied. FIG. 3 is a flowchart showing the operation of the cloth wrapping detection device. ■...Fabric length setting means, 2...Fabric length detection means, 3...
- Signal generation means. Figure 1 Figure 2 (A)

Claims (1)

[Claims] (1) Fabric length setting means for setting the set fabric length of the woven fabric to be wound onto the fabric roll; fabric length detecting means for detecting the actual fabric length of the woven fabric; A cloth winding amount detecting device for a loom, comprising: signal generating means for outputting a signal for resetting the actual cloth length to zero to the cloth length detecting means when the comparison value reaches a predetermined value.