JPS63315663A - Apparatus for automatically feeding cloth - Google Patents

Abstract

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

Description

Detailed Description of the Invention [Field of Application of the Invention] The present invention provides continuous feeding of a long fabric to a tenter and automatic feeding of the fabric to a tenter so that the weft density of the spread fabric can reach a predetermined density. This invention relates to an automatic feeding device for fabric that is fed and hung.

[Background of the Invention] It is possible to carry out hot air treatment such as drying and heat setting by blowing hot air onto the fabric during running by sandwiching both widthwise edges of a long fabric to be industrially produced and processed. It is considered publicly known. However, since tension in the warp direction is applied to the long fabric that is continuously transported, the weft density of the fabric with this tension in the warp direction becomes coarse, and it is difficult to produce processed fabric with an appropriate weft density. If you try to hang the fabric under light tension directly on a tenter and spread it out, unreasonable tension will be applied to the weft threads, causing problems such as damage to the fabric. .

Therefore, in the conventional example, an overfeed roller is provided on the fabric supply side of the tenter chain, which is driven by a motor via a continuously variable transmission, and by manually turning the speed ratio adjustment shaft of the continuously variable transmission, the overfeed roller is A known method is to set the ratio, that is, the ratio between the circumferential speed of the overfeed roller and the running speed of the tenter chain.

And the above overfeed ratio is f! ! The weft density is set based on experience according to the weft density specified in advance by the above-mentioned regulations, and then after the start of operation, the weft density is measured at the fabric delivery side end of the tenter, and the weft density is determined according to the difference between the measured value and the above target value. This was to correct the initial overfeed ratio. In other words, in the past, the speed ratio adjustment shaft of the continuously variable transmission for driving the overfeed roller was manually turned.
There was a problem in that it took a long time to correct the weft density after measuring it on the delivery side of the fabric, and uncorrected fabric was produced during that time. Further, when the weft density of the fabric supplied to the tenter fluctuates, there is a drawback that the overfeed ratio cannot be corrected in accordance with the fluctuation. Therefore, as a means to eliminate this drawback, we have developed an overfeed ratio measuring device to measure the overfeed ratio of the overfeed roller, and a fabric running length measuring device to measure the running length of the fabric transferred by the tenter chain. , a weft density measuring device for counting the number of weft yarns per unit length of the fabric on the fabric delivery side of the tenter chain, and a reversible device for rotating the speed ratio adjustment shaft of the continuously variable transmission for changing the speed of the overfeed roller. A motor and a controller for controlling the reversible motor based on each output signal of the overfeed ratio measuring device and the weft density measuring device and a preset target value of the weft density,
The overfeed ratio is measured and stored for each predetermined running length on the fabric supply side, the weft density of the measured portion is measured on the fabric delivery side, and the measured value of the weft density is used to measure the overfeed ratio. The above target value is divided by this supply side weft density to calculate the corrected overfeed ratio, and the above target value is divided by this supply side weft density, and the overfeed roller An overfeed device for a fabric tenter has been proposed in which the overfeed ratio can be changed to the above-mentioned modified overfeed ratio by rotating a reversible motor.

However, in such a conventional overfeed device, the weft density measuring device is installed at the end of the fabric feeding side of the tenter chain, and the rotational speed of the overfeed roll installed at the end of the fabric feeding side of the tenter chain is measured. Since the weft density of the fabric derived from the tenter is automatically controlled to a predetermined density by controlling the It can only be confirmed on the derivation side, and therefore,
The fabric cannot be detected after it has passed through the overfeed roll until it reaches the weft density measuring device, that is, while it is being transported by a tenter. Generally, the total length of the tenter is long, 30 to 40 m, so the length of the fabric fed into the tenter (approximately 30 to 40 m) from passing through the overfeed roll to reaching the weft density measuring device. 40 m) may reach the set density, resulting in a defective fabric and causing waste of the original fabric.

[Object of the Invention] The present invention has been made in view of this problem, and includes a fabric weft density measuring device installed close to the fabric introduction side of the overfeed roll installed at the fabric feeding side end of the tenter. Then, the weft density measured by the weft density measuring device is compared with a predetermined weft density to be used as a draft, and the overfeed roll is driven so that the comparison difference approaches 7, so that the weft density just before being sent to the tenter is It is an object of the present invention to provide a fabric feeding device that can automatically control the density to a predetermined value, and the present invention has the effect of enabling processing without waste.

[Embodiments of the Invention] The present invention will be described in detail below based on embodiments shown in the drawings.

1 is a long fabric to be processed, and 2 is a tenter for setting and processing the fabric 1 in a spread state. Reference numeral 3 indicates an overfeed roll disposed on the fabric feeding side of the tenter 2, 4 indicates a touch roll for the fabric marked on the fabric feeding side of the overfeed roll 3, and 5 indicates a fabric guide roll. 6 is a drive motor for driving the tenter 2, and 7 is a drive motor for driving the overfeed roll 3. The driving force from the drive motor 7 is transmitted to the overfeed roll 3 via a transmission 8. It is meant to be transmitted. 9 is the fabric touch roll 4 mentioned above.
A tachometer generator 10 outputs an output by the rotation of the tacho generator, and 10 is a weft density measuring device for measuring the weft density of the fabric 1 fed to the overfeed roll 3. As this weft density measuring device, a known weft density measuring device can be selectively used. can. 11
12 is a control circuit, and 12 is a density setting device for setting the weft density of the fabric 1 that has passed through the overfeed roll 3. 1
3 is a DC motor (can be forward or reverse) for rotating the speed change handle that determines the speed change of the transmission 8; 14 is a potentiometer for setting the adjustment range of the transmission; 15 is its limit switch; and 16 is a tenter. A transmitter 17 that oscillates a drive signal for the drive motor 6 receives a signal from the transmitter and transmits a drive signal to the drive motor 7 of the overfeed roll 3.
This is a receiver that controls the drive of the

The configuration of this embodiment has been described above. Next, the operation will be described. First, the density setter 12 is used to input the expected weft density of the fabric to be fed into the tenter 2 to the control circuit 11. So NJ'r! +Motor 6 and drive motor 7
The tenter 2 and overfeed roll 3 are driven to transport the fabric 1 in the direction of the arrow. The movement of the fabric 1 causes the touch roll 4 to rotate, which causes the tacho generator 9 to rotate, and the transmission from the tacho generator 9 to
A signal confirming that the fabric 1 is being transferred is supplied to the control circuit 11 manually. Therefore, it is supplied to this control circuit 11. Therefore, the control circuit 11 operates to compare the weft density of the fabric 1 read by the density measuring device 10 and the expected weft density set by the density setting device 12, If there is a comparative difference between the density and the density, a control signal for speeding up or decelerating the overfeed roll 3 is manually input to the DC motor 13 so that the comparative difference approaches zero, and as a result, the transmission 8 Due to the fluctuation, the circumferential speed of the overfeed roll 3 is automatically adjusted, and the weft density of the fabric 1 fed into the tenter 2 can be brought closer to the expected density manually input to the setting device 12. Note that in order to drive the overfeed roll 3 only when the drive motor 6 of the tenter 2 is operating, the rotational operation signal output from the oscillator 16 of the drive motor 6 is transmitted to the overfeed roll. By manually applying power to the receiver 17 of the driving motor 7,
This prevents tenter 2 and overfeed roll 3 from malfunctioning.

In this way, according to this embodiment, the weft density of the fabric to be fed into the tenter can be automatically adjusted on the feeding side of the tenter so that it becomes the weft density inputted with the density setting device. Compared to a method in which the weft density is detected on the fabric delivery side of the tenter, there is no untreated weft density area of the fabric on the tenter, and therefore there is no wastage of fabric, and the yield of treated fabric is improved. . Further, according to this device, a touch roll 4 and a tacho generator 9 are provided which contact the fabric to be processed and detect the transfer state of the fabric, and if there is no output from the tacho generator 9, that is, if the fabric is not being transferred. In this case, since the control circuit 11 is not activated, malfunctions of the overfeed roll 3 and the tenter can be prevented. Further, the drive motor 6 of the tenter 2 is provided with a transmitter 16, and the drive motor 7 of the overfee l' roll 3 is provided with a receiver 17 for receiving the signal from the transmitter 16.
If tenter 2 does not drive, overfeet roll 3
Since the structure is such that the overfeed roll is not driven, only the overfeed roll is driven during alignment, and smooth fabric transfer processing is possible without problems such as fabric accumulation on the feeding side of the tenter. There are effects that can be achieved.

[Summary of the Invention] As described above, the present invention is a fabric transfer processing device including an overfeed roll on the fabric feed side of a tenter, in which movement of the fabric is detected on the fabric introduction side of the overfeed roll. It is equipped with a density measuring device that detects the weft density of the touch roll and its fabric, and also receives signals from the touch roll and the density measuring device, further receives a signal from the density setting device, and measures the density from the density measuring device. A control circuit is provided to drive and adjust the overfeed roll so that the signal is compared with the density signal from the density setting device so that the density signal value from the density measuring device approaches the density signal value from the density setting device. This is an automatic fabric feeding device characterized by:

[Effects of the Invention] Therefore, according to this device, the weft density of the fabric to be fed into the tenter can be automatically adjusted on the feeding side of the tenter so that it becomes the weft density manually set by the density setting device.
As shown in the conventional example, compared to the method in which the weft density is detected on the fabric feeding side of the tenter, there is no untreated weft density area of the fabric on the tenter, so there is no waste of fabric, and the yield of treated fabric is reduced. This has the effect of improving

Furthermore, according to this device, in contact with the fabric to be treated,
A touch roll 4 and a tacho generator 9 are provided to detect the transfer state of the fabric, and if there is no output from the tacho generator 9, that is, if the fabric is not transferred, the control circuit 11 will not be activated. This has the effect of eliminating malfunctions before they occur.

[Brief explanation of the drawing]

The drawings are explanatory diagrams showing an embodiment of the apparatus according to the present invention. 1... Fabric 2... Tenter 3... Overfeed roll 4... Touch roll 5... Fabric guide roll 6
... Drive motor 7... Drive motor 8... Transmission 9... Tacho generator 10... Density measuring device 11... Control circuit 12... Density setting device 13... DC motor 14. ...Potentiometer 15...Limit switch

Claims (1)

[Claims] In a fabric transfer processing device comprising an overfeed roll on the fabric feed side of a tenter, a touch roll for detecting movement of the fabric and a density measurement device for detecting the weft density of the fabric are provided on the fabric introduction side of the overfeed roll. equipment, receives the signals from the touch roll and the density measuring device, further receives the signal from the density setting device, and compares the density signal from the density measuring device with the density signal from the density setting device. An automatic fabric feeding device characterized in that it is provided with a control circuit that drives and adjusts the overfeed roll so that the density signal value from the density measuring device approaches the density signal value from the density setting device.