JP3147550B2 - Cloth cutting position setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woven cloth cutting position setting for detecting a predetermined detection mark formed on a warp in a loom, thereby setting a cutting position for performing cloth unrolling of a cross roll. Related to the device.

[0002]

2. Description of the Related Art In general, when a predetermined amount of woven fabric is wound on a wrapping roll during weaving and becomes full, a series of cutting of woven fabric, lowering of the wrapping roll, mounting of an empty wrapping roll, and wrapping a cloth end. Work of replacing the cloth roll is required. Here, in order to perform this replacement work, it must be detected that a predetermined amount of the woven cloth has been wound on the cloth roll. As this detecting means, conventionally, a cut mark is previously attached to a warp, and a weaving length at a time when the cut mark is almost located at a cutting position is calculated from the number of rotations of a drive shaft of a loom, and this count number is used. After stopping the loom, the operator searched for the cut mark, cut the woven cloth at the position of the cut mark, and cut the cloth.

Further, as disclosed in, for example, Japanese Patent Application Laid-Open No. 3-279443, a predetermined portion of a warp is marked in advance with a magnetic material paint or the like in a warping step, and a magnetic material for detecting the magnetic material is detected. There has been proposed a cloth roll replacement time detecting device that includes a sensor, determines the replacement time of the cloth roll based on the output signal of the magnetic sensor, and turns off the loom or turns on a warning or the like.

[0004]

In the case of the former of the prior art described above, when measuring the weaving length using a drive shaft of a loom or the like,
Large measurement errors occur due to fluctuations in warp or woven fabric tension or shrinkage of woven fabric. Therefore, even if the loom is stopped when the weaving length reaches the set length by the measurement, the stop position and the position of the cut mark are usually greatly deviated. Especially, the cut mark is already entangled in the cross roll,
If it is still in the warp beam, it cannot be distinguished whether the cut mark is in the cross roll or in the warp beam, and the woven fabric cannot be cut at the cut mark position. Furthermore, in order to pull out the cut marks in the cross roll, the cross roll must be unwound, and there is a problem that this operation is complicated and stains the woven fabric. On the other hand, if the loom stops before the cross mark, the worker must monitor the loom as often as possible until the cut mark is woven to the cutting position. And the work efficiency is poor.

In the case of Japanese Unexamined Patent Publication No. Hei 3-279443, a magnetic material paint is detected.
There is a disadvantage that a large detection signal cannot be obtained and the detection accuracy is poor. In addition, there is a type of cutting the woven fabric at the cut mark position by the cut mark sensor without measuring the weaving length, which detects the cut mark by distinguishing the color. There is a problem that it cannot be detected if it is done. Further, when a metal piece or the like is pasted as a cut mark, there is a problem that a substance attached to the warp becomes large and gets caught on a dropper pin, a heald mail, a reed feather and the like.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and has a simple structure, in which a woven cloth can be cut accurately at a cut mark position attached to a warp. It is an object to provide a setting device.

[0007]

According to the present invention, a pre- cut
The warp marked and the weave formed by this warp
Measuring means for directly or indirectly measuring the weaving length of the cloth ,
The cut mark reaches a predetermined position before the cloth cutting position.
Alarm means for grasping the time to perform based on the measured value and outputting an alarm, and at the position of the cut mark after the alarm
Setting means for setting the weaving length necessary for the cut mark to reach the woven cloth cutting position based on the setting,
The time when the woven fabric to be woven at the set weaving length reaches the above
This is a woven cloth cutting position setting device provided with cutting instruction means for grasping by the measuring means and outputting a woven cloth cutting signal.

[0008]

In the woven cloth cutting position setting device of the present invention, an alarm signal is issued before the position of the cut mark provided on the warp reaches the woven cloth cutting position, and thereafter, a predetermined remaining weaving is set by the operator. Since the woven cloth is cut when the length is woven, the operator can easily find the cut mark, and the woven cloth can be cut accurately at a position very close to the cut mark.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 2, in the loom provided with the woven cloth cutting position setting device of this embodiment, the warp 12 wound around the delivery beam 10 is
It is sent to the weft insertion part 18 via the heald 16 and the weft insertion part 18
Is provided with a weft insertion device (not shown). In the weft insertion portion 18, an opening 26 for the warp 12 is formed to insert the weft 24, and a reed 28 is swingably provided. Then, the woven cloth 3 which is weft-inserted and beaten and woven
0 is wound around a winding roller 34 via a guide roll 32 and then wound around a predetermined amount on a cross roll 36.

The woven cloth cutting position setting device of this embodiment comprises a digital control device such as a microcomputer or the like. As shown in FIG. 1, the number of rotations of the drive shaft of the loom or the number of rotations of the winding roller 34, etc. Weaving length measuring means 40 to which the rotation amount signal is input is provided. In the weaving length measuring means 40, the rotation amount signal is a pulse signal emitted at every rotation or every predetermined angle of the loom drive shaft or the take-up roller 34, and counts this to calculate the weaving length. It is. When the calculated value is one pulse for one rotation of the loom driving shaft, the weaving length L is obtained by L = count value / {implantation density (1 + weaving shrinkage ratio)}.
Here, the driving density is the number of weft yarns / cm, and the weaving shrinkage ratio is the degree of shrinking after forming a woven fabric. Further, the weaving length measuring means 40 may measure the consumption length of the warp yarn 12 and convert it into the weaving length of the woven fabric.

Further, the woven cloth cutting position setting device of this embodiment has a woven cloth predetermined length setting means 42, a woven cloth cutting length setting means 44, which are respectively set by an operator's input operation.
And the remaining weaving length setting means 45 are provided. The woven cloth take-off length setting means 44 sets the weaving length Lo at which the cross roll 36 becomes full and performs the take-off.
The weaving length Lo is a weaving length when a cut mark previously attached to a warp passes a weaving position and reaches a cutting position after weaving is started with an empty cross roll. The predetermined length setting means 42 of the woven cloth is for setting a point of time at which a warning for cutting off to be described later is issued, and the set weaving length L1 is a distance slightly longer than the measurement error of Lo. . For example, if the measurement error of the weaving length Lo is ± 100 cm, it is set to 300 cm which is equal to or more than this error. The remaining weaving length setting means 45 is for setting the warp / woven cloth path length Lx from the woven cloth cutting position of the loom to the predetermined position where the cut mark exists.

As shown in FIG. 3, the remaining weaving length setting means 45 adds an illustration displayed on the display device 52 of the loom to
The path of the woven fabric or warp is displayed, and the distance from the unwinding position S is displayed at a predetermined position in a series of steps along the path. A touch switch (not shown) is provided on the screen of the display device, and a predetermined numerical value is pressed so that the numerical value is input as the remaining weaving length Lx.

The weaving length measuring means 40 receives an unloading signal of the cross roll 36 and an operation signal of the remaining weaving length setting means 45 via an OR gate 49. Then, the output of the weaving length measuring means 40 is input to the first, second, and third comparing means 46, 47, and 48. Further, the output of the predetermined length setting means 42 is passed through a calculating means 50 for obtaining a difference from the output of the unwinding length setting means 44, and the difference (Lo-L) is obtained.
The signal of 1) is input to the first comparing means 45.

The output of the first comparing means is output as an alarm signal and is also input to the elapsed weaving length calculating means 53. The elapsed weaving length calculating means 53 stores the weaving length L at the time when the alarm signal of the first comparing means is issued, subtracts this weaving length L from the subsequent weaving length L, and outputs the weaving length after the alarm is output. Is displayed on the display device 52. The output of the remaining weaving length setting means 45 is input to the second comparing means 47, which is the cutting instruction means, and the cutting instruction signal is output by comparing the remaining weaving length Lx with the weaving length L after the setting of the remaining weaving length. .
The output of the cut-off length setting means 44 is input to the third comparing means 48 which is the cut-off length determining means. Further, an output signal of the storage unit 54 to which the operation signal of the remaining weaving length setting unit 45 has been input is input to the third comparison unit 48 as an operation permission signal of the third comparison unit. The storage means 54 is constituted by a flip-flop or the like, is reset by an operation signal output when the remaining weaving length setting means 45 is operated, and is set by a cross roll cutoff signal. Therefore, the operation of the third comparing means is permitted by the storage means 54 during a period from the previous output of the cross roll unloading signal to the output of the operation signal of the remaining weaving length setting means 45.

The operation of the woven cloth cutting position setting device of this embodiment will be described below. First, the predetermined length setting means 42 and the cutting length setting means 44 set the weaving length L up to the cutting off.
o and a predetermined length L1 to be subtracted from Lo are input. Thereafter, when the weaving is started, the weaving length L is inputted to the first comparing means 46 as needed, and this weaving length L is compared with the length (Lo-L1) inputted from the calculating means 50. Then, when the weaving length L becomes (Lo-L1), the first comparing means 42 outputs an alarm signal. Thereafter, the worker confirms the alarm signal, and inputs the necessary weaving length from the stocking position S to the cut mark by the remaining weaving length setting means 45. The remaining weaving length to be entered here should be such that the cut mark at that time should be located before the woven cloth cutting position, so that the operator can cut the woven cloth or warp cut mark before the woven cloth cutting position. Search and perform input operation. This input operation is performed by pressing a touch switch on the screen of the display device 52 as shown in FIG. Until the input operation of the remaining weaving length setting means 45 is performed, the display device 52 displays the elapsed weaving length, which is the woven fabric weaving length up to the present after the output of the alarm signal, and the operator also displays this display. Find the cut mark for reference.

When the remaining weaving length Lx is set, the weaving length measuring means 40 is reset by this operation signal, and the second weaving means sets the remaining weaving length Lx and the weaving woven after setting the remaining weaving length. The length L is compared with the length L, and when they match, a cutting instruction signal for the woven fabric is output. When the cutting of the woven fabric is performed and the cutting off is performed, a cutting off signal is output, and the weaving length measuring means 40 is reset by the cutting off signal. Also, the remaining weaving length L
If the actual weaving length L becomes equal to the set weaving length Lo before x is set, a loom stop signal is output from the third comparing means, and the loom is stopped. In this case, as in the related art, an operator searches for a cut mark, weaves the cloth to the position of the cut mark, and cuts off the woven fabric. This is because, when the worker cannot reach the loom immediately after the alarm signal is output, or when the worker cannot find the cut mark even when the worker arrives, weaving is continuously performed without performing the remaining weaving length setting operation. This is to prevent the cross roll from being taken up excessively. Further, even when an automatic cloth roll unloading device is provided, the cloth unloading is performed at the cut mark position by an operator without performing the automatic cloth unloading. The above operation is shown in a flowchart in FIG.

The woven cloth cutting position setting device of this embodiment utilizes the weaving length L measured by the weaving length measuring means 40 to issue an alarm at a weaving length shorter than the initially set off length Lo by a predetermined length L1. Output, and then the operator sets the necessary weaving length as the remaining weaving length Lx, so that the cut mark does not get caught in the cross roll,
The measurement error of the woven fabric occurs only for the remaining weaving length Lx, and the woven fabric can be almost completely unloaded at the cut mark position. In addition, when an automatic cloth unloading device is provided, after setting the remaining weaving length, the worker automatically cuts the woven fabric by only the remaining weaving length without monitoring the loom. It also reduces man-hours.

As another embodiment of the woven cloth cutting position setting device of the present invention, instead of the predetermined length setting means, a time point which is a predetermined time T earlier than a time required to reach a predetermined cutoff length Lo is set. You may do it. In this case, the alarm output point is output at the point of time (To-T) obtained by subtracting the predetermined time T from the predicted weaving time To up to the stocking length Lo. The predicted weaving time To is obtained by dividing the stocking length Lo by the weaving speed of the loom. The weaving length measuring means may measure the time, calculate the weaving length from the weaving time, and output an alarm signal in the same manner as described above.

The remaining weaving length setting means may be provided on the loom with a display plate on which an illustration as shown in FIG. 3 is drawn, or may be provided at the warp path or the woven cloth path on the loom from the cloth cutting position. A scale indicating the distance may be attached, and the operator may look at the scale and input the distance from the cut mark to the cutting position. Further, the scale on the loom may be rough, and the distance brought by the operator may be compensated for more accurately. Further, the remaining weaving length may be input simply by visual inspection of the operator. The input means of the remaining weaving length may be a keyboard other than the touch panel as long as it can be input to the control device. Further, the woven cloth cutting position setting device of the present invention is capable of automatically performing accurate cloth unloading by being applied to a loom provided with an automatic cloth unloading device, and has a great effect. The present invention is not limited to a loom equipped with a cloth unloading device, and is also effective in a case where an operator performs cloth unloading.

[0020]

According to the woven cloth cutting position setting device of the present invention, an alarm is output at a weaving length that is shorter than the initially set off length by a predetermined length, and thereafter, the operator leaves the necessary weaving length up to the cut mark position. The length is set, and after the weaving for the remaining weaving length, the woven fabric is cut, so that the measurement error of the weaving length measuring means can be eliminated and the woven fabric can be reliably cut off at the cut mark position. . In addition, after setting the remaining weaving length, the worker can automatically cut the necessary woven fabric after weaving without monitoring the loom, thereby reducing the number of man-hours for the worker.

[Brief description of the drawings]

FIG. 1 is a block diagram of a woven cloth cutting position setting device according to a first embodiment of the present invention.

FIG. 2 is a schematic view showing a loom according to a first embodiment of the present invention.

FIG. 3 is a diagram showing display contents on a display unit according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the woven cloth cutting position setting device according to the first embodiment of the present invention.

[Explanation of symbols]

 12 Warp 30 Woven cloth 36 Cross roll 40 Weaving length measuring means 42 Predetermined length setting means 44 Remaining weaving length setting means

Continuation of the front page (56) References JP-A-61-225358 (JP, A) JP-A-56-9450 (JP, A) JP-A-3-279443 (JP, A) JP-A-48-72464 (JP) , A) JP-A-62-177261 (JP, A) JP-A-62-149950 (JP, A) JP-A-5-98542 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB Name) D03D 51/18 D03D 49/20 D03J 1/20

Claims (1)

(57) [Claims] 1. A method according to claim 1, wherein a weaving length of a warp with a cut mark and a woven fabric formed by the warp is directly or interposed.
Measuring means for indirectly measuring, reaches a predetermined position in front of the cut mark is woven cutting position
Alarm means for grasping the time to perform based on the measured value and outputting an alarm, and weaving necessary for the cut mark to reach the woven cloth cutting position based on the position of the cut mark after the alarm.
Setting means for setting the length, and cutting instruction means for grasping by the measuring means when the woven fabric to be woven after the setting has reached the set weaving length, and outputting a cutting signal of the woven fabric is provided. A cloth cutting position setting device.