JPH0416452A - Selvage cut preventing device for winding device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a cut selvage without complicating structure of a running passage by intermittently operating a regulating device, receiving a detecting signal from an edge detecting device and operating an actuator so as to correct displacement, during winding operation. CONSTITUTION:A regulating device 10 corrects the position of a raw fabric roll 2 through operation of an actuator 8 based on a detecting signal from an edge detecting device 9 located in the vicinity of a slitter 4. A control device 11 intermittently works the regulating device 10 so that next correction operation is stopped by the actuator until a beltlike sheet 1 unwound from a raw fabric roll 2 is run to a position near the slitter 4. The control is repeated in succession during winding operation. This operation waits for the correction result of an edge position to perform subsequent correction again. This constitution prevents the control device from being brought into a non-controllable state as a result of hunting occurring to a control system due to a time lag in which the influence of correction operation at a raw fabric roll part is exercised on a slitter part.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a winding device for winding a strip-shaped sheet of metal foil, paper, plastic film, etc. from an original roll and cutting it decoratively with a slitter. To prevent edge breakage caused by unspecified widthwise deviation of the belt-shaped sheet fed to the slitter, that is, the width of the decoratively cut edges becoming narrower during operation, causing them to break, or the edges to be cut off. This invention relates to an ear cut prevention device.

(Prior art) Conventionally, in a winding device that rewinds a strip-shaped sheet from a raw fabric roll and winds it while performing decorative trimming using a slitter, the rewound strip-shaped sheet has unevenness in the width direction due to uneven end surfaces of the raw fabric roll. Some were equipped with an edge position control device to prevent the edges from shifting. However, this edge position control device does not correct the edge position of the strip sheet in a part of the slitter, but rather maintains the edge position of the strip sheet near the original roll at a constant position. That is, in this apparatus, a shift in the edge position of the strip-shaped sheet is detected by an edge detection device for detecting the edge position provided near the original roll.

Then, based on the detection signal, an actuator capable of reciprocating the original fabric roll support device is operated to move the original fabric roll in the width direction so that the edge of the strip-shaped sheet comes to the reference position.

(Problem to be Solved by the Invention) However, the above-mentioned edge position control device is not suitable for preventing edges from being cut when winding a belt-shaped sheet that is difficult to shift in the width direction due to uneven thickness, such as a thin stretchable plastic film. Although effective, a sufficient effect could not be obtained for preventing edge breakage of belt-shaped sheets such as metal plates with poor elasticity. In other words, if the strip-shaped sheet is made of metal or other material with poor elasticity, it may shift in the width direction while traveling to a part of the slitter, even if the edge of the sheet can be kept at a constant reference position near the raw roll. This is thought to be caused by the uneven thickness of the belt-shaped sheet.Furthermore, the amount of deviation of the belt-shaped sheet changes depending on its running speed and the magnitude of the tension acting on it.Therefore, it is necessary to accurately measure this widthwise deviation in advance. Even if the strip sheet is rewound so that the edge is at the reference position, if the strip sheet shifts while traveling to the slitter,
If there is no margin for cutting the ears, the decoratively cut ears may be cut off, or the narrowed ears may break, making winding operation impossible. Originally, the above-mentioned edge position control device did not take into consideration the correction of the deviation that occurs while the strip sheet is traveling to the slitter.

In addition, an edge detection device that detects the edge of the strip sheet and a guide roll mechanism that changes the posture of the roller and corrects the running direction of the strip sheet based on the detection signal of this edge detection device are installed near the slitter. It is also possible to apply a known belt-shaped sheet edge position control device that corrects the deviation of the belt-shaped sheet.However, in this case, in the case of non-stretchable belt-shaped sheets, etc. Distortion or the like is likely to occur, or correction of misalignment becomes uncertain.In addition, providing the guide roll mechanism on the running path of the belt-shaped sheet complicates the structure of the sheet running path and increases the occupied space. Furthermore, it becomes more difficult to automate the process of passing the leading edge of a strip sheet during winding preparation, and therefore, the range of application of this edge position control device is very narrowly limited. .

An object of the present invention is to solve the above-mentioned problems and to obtain a device for preventing edge breakage of a winding device, which can prevent edge breakage without complicating the structure of the running path of a belt-shaped sheet.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for decoratively cutting ears using a slitter while unwinding a belt-like sheet from a raw roll, and then winding up the decoratively cut belt-like sheet. An edge cut prevention device for a stripping device includes a material roll support device movable in the width direction of the strip sheet, an actuator capable of reciprocating the material roll support device in the width direction of the strip sheet, and provided near the slitter. an edge detection device that detects a deviation in the edge position of a belt-shaped sheet; an adjustment device that receives a detection signal from the edge detection device and operates the actuator to correct the deviation; and a winding device for winding the adjustment device. The vehicle is characterized by comprising a control device that operates intermittently during operation.

In addition, in a device for preventing edges from being cut off in a winding device that uses a slitter to cut edges while unwinding a strip sheet from a raw roll and winds up the trimmed strip sheet,
a material roll support device that is movable in the width direction of the strip sheet;
an actuator capable of reciprocally driving the web roll support device in the width direction of the belt-like sheet; and an actuator for detecting a shift in the edge position of the web roll, which is movably provided in the vicinity of the web roll (in the width direction of the belt-like sheet). A reverse edge detection device, a detection device actuator that reciprocates the original edge detection device in the width direction of the strip sheet, and a detection signal from the original edge detection device to correct the deviation. A sheet side adjustment device that operates the actuator, an edge detection device that detects the deviation of the edge position of the belt-shaped sheet, which is installed near the slitter, and the edge detection device receives a detection signal and detects the detected edge position. an adjusting device that operates the actuator for the detection device so that the original side edge detection device moves to a position where the edge of the strip sheet should be moved to correct the deviation; and an adjusting device that operates the adjusting device intermittently during the winding operation. The invention is characterized in that it is equipped with a control device that operates in a controlled manner.

In addition, the control device receives a detection signal from the belt-shaped sheet running length detection device, and controls the adjustment device every time the operation of the adjustment device is stopped and the counted value of the running length of the strip-shaped sheet reaches a required value. It is best to control the system so that it starts working.

Furthermore, a control device having an adjustment mechanism that receives a detection signal from the line speed detection device and adjusts the proportional sensitivity of the adjustment device according to the line speed may be adopted.

(Operation) The adjustment device operates an actuator based on a detection signal from an edge detection device provided near the slitter to correct the position of the original fabric roll.

The control device operates the adjustment device intermittently so that the next corrective action by the actuator is stopped until the strip sheet unwound from the original roll runs close to the slitter. This control is constantly repeated during the winding operation. By doing this, the next correction can be made again after waiting for the edge position correction result. Therefore, it is possible to prevent hunting or the like from occurring in the control system, which would result in loss of control, due to a time delay until the influence of the correction operation in the original roll part appears on a part of the slitter.

In addition, when the proportional sensitivity of the control operation of the adjusting device is adjusted according to the line speed with the control device, the line speed changes6 and a certain amount of correction is made for a certain unwinding length of the strip sheet. You can get C.

(Example) Next, an example will be described with reference to the drawings. In each embodiment, 1 is a belt-like sheet, 2 is a roll of raw material, 3 is a delivery roller, 4 is a slitter, 5 is a lug, 6 is a winding shaft, 7 is a raw roll support device, 8 is an actuator, and 9 is an edge detector 10 is an adjustment device, and II is a control device.

Example 1 will be described based on FIGS. 1 and 2. 1st
The figure is an overall explanatory view of the edge cut prevention device of the winding device. The winding device in this case is a sheet dividing winding device, and the strip-shaped sheet 1 is rewound from the raw roll 2 by a driven rolling roller 3, and travels in the direction of the arrow in FIG. Both ears are decoratively trimmed, and the remaining portion is divided into multiple strips. The selvage 5, which has become a cut scrap after the cosmetic cutting, is guided to an selvage winding device (not shown) and wound up. Further, each of the divided strips 1a is distributed and wound up on the left and right winding shafts 6, 6 alternately. In this case, the raw fabric roll 2 used has its end surfaces aligned.

The original fabric roll 2 is attached to a known original fabric roll support device 7. This original roll support device 7 is arranged in the width direction of the strip-shaped sheet,
That is, it is guided and movable in the direction of arrow A.

The actuator 8 can be driven to reciprocate.

An edge detection device 9 is provided near the slitter 4 to detect the positional deviation of the edge 1b of the belt-shaped sheet, and outputs a detection signal to the adjustment device IO. The amount of operation of the actuator 8 can be adjusted so as to eliminate this. That is, if the strip sheet 1 deviates while traveling to the slitter 4, the actuator 8 is actuated so that the original fabric roll 2 moves in the direction opposite to the direction of the deviation.

The operation of the adjusting device IO, that is, whether the edge position can be automatically controlled or whether the automatic control is stopped is controlled by the control device 11.

As shown in FIG. 2, the control device 11 in this embodiment includes a pulse generator 12 as a device for detecting the running length of the strip sheet, a commercially available sequence controller 13, and a relay 14.

The pulse generator 12 generates a pulse signal in proportion to the traveling length of the belt-like sheet l.

The sequence controller 13 is programmable and programmable via the input device 13a, and includes a CPU (not shown), a timer circuit, a counter circuit for counting pulse signals from the pulse generator 12, and the like (not shown). The sequence controller 13 includes a circuit for operating the contact 14a. - The circuit closes the contact 14a when the winding operation is started. Then, the contact 14a opens after the time set in the timer circuit by the input device 13a (and the counter circuit starts counting. After that, when the counted value of the detected pulse signal reaches the counted value set in the counter circuit A signal is output from the counter circuit, and the contact 14a of the relay 14 closes.At the same time, the timer circuit operates again and the contact 14a opens after the set time, and during the winding operation, the contact 14a repeats this operation. Instead, the sequence controller 13 is provided with a second counter circuit, and the counter circuit also counts the pulse signal detected by the pulse generator 12, and the second counter circuit starts counting at the same time as the contact 14a closes. , a circuit configured to output a signal and open the contact 14a when the counted value reaches a set value may be used.

On the other hand, in this embodiment, the regulating device 10 includes an amplifier 15 receiving a detection signal from the edge detecting device 9, a servo valve 16 .
Hydraulic unit 1 that supplies pressure oil to actuator 8
Consists of 7. Further, these are commercially available edge position control devices that control the edge position of the unwound strip sheet immediately after the original roll to maintain it at the reference position. The amplifier 15 is equipped with terminals 15a and +5a for starting and stopping its operation by remote control, and the terminal of the contact +4a of the relay 14 is connected to these terminals 15a and 15a with a conductor. and contact 14
When contact 14a closes, amplifier 15 operates, and when contact 14a opens, amplifier 15 stops operating. When the adjustment device 1o stops working, pressure oil is not supplied to the actuator 9, and the position of the fabric roll support device 7 is not adjusted.

In this way, the control device 11 controls the contact point 14a in this embodiment.
By repeatedly opening and closing at predetermined intervals, the adjustment device 1o can be controlled to repeatedly turn on and off during the winding operation, that is, the adjustment device 1o can be controlled to work intermittently. The on/off interval of the adjustment device 10 can be set via the input device 13a. In this setting, normally, the timer circuit in the sequence controller 13 sets a delay time so that the relay 14 operates for only a short time, and the counter circuit sets the running length of the strip sheet 1 from when the contact 14a opens until it closes. Set the corresponding count value. Note that these set values are not necessarily constant at 6 and may vary depending on conditions such as the length of the path of the strip sheet from the original roll to the slitter, the installation position of the edge detection device 9, etc. As for the setting value of the counter circuit, first select a value corresponding to the length that the strip-shaped sheet 1 travels from the original roll 2 to the position of the edge detection device 9, or a value smaller than that, and then perform actual winding operation and check the results. Based on this, it is desirable to modify the control so that it becomes more stable, and it is also desirable to modify the delay time setting according to the proportional sensitivity of the control system.

Example 2 will be explained based on FIG. 3.

In the edge cut prevention device according to this embodiment, the edge detection device 9 and the control device 11 have the same structure as in the first embodiment and operate in the same manner. The adjustment device 10 does not operate the actuator 8 that drives the fabric roll support device 7, but operates the detection device actuator 19 that drives the fabric side edge detection device 18 provided near the fabric roll 2. is Example 1
However, the structure is otherwise similar to that of the first embodiment and operates in the same manner. This embodiment differs from the first embodiment in that it is provided with an original fabric side adjusting device 20 which has the same structure as the adjusting device 10 and operates in the same way, and the actuator 8 is operated by this.

The original side edge detection device 18 is supported by a support device 18a that can slide in the width direction of the strip-shaped sheet 1.
The deviation between the reference position set on itself and the position of the edge 1b of the sheet 1 rewound from the original roll 2 is detected.

The original fabric side adjusting device 20 receives a detection signal from the original fabric side edge detection device 18, and adjusts the edge 1b of the strip-shaped sheet 1 so as to eliminate the above-mentioned deviation (i.e., to bring the edge 1b of the strip-shaped sheet 1 to the reference position above the edge detection device 18). In this case, the actuator 8 is constantly operated during the winding operation.If the web side edge detection device 18 is not moved by the detection device actuator 19, the web side edge detection device 18, the web side adjustment device 20, and the actuator 8 must be operated. and the original roll support device 7 are conventional edge position control,
This will configure the device.

During winding operation, if the strip sheet 1 deviates, for example, in the direction of arrow B while traveling to the slitter 4, the edge detection device 9 detects the deviation, and the adjustment device 1O operates the actuator 19 based on the detection signal. Then, the original side edge detection device 18 is moved from the reference position in the direction of arrow C by the amount of the correction.

Then, the web side adjustment device 20 moves the edge 2 of the web roll 2 to the reference position on the moved web side edge detection device 18.
Operate the actuator 8 so that a matches. As a result, the raw fabric roll 1 moves in the direction of the arrow. That is, the fabric side adjusting device 20 operates the actuator 8 so that the fabric roll moves following the movement of the fabric side edge detection device 18.

Furthermore, even if there is an irregularity in the end surface of the web roll 2, the deviation of the rewound belt-like sheet 1 due to this is detected by the web side edge detection device 18, and the web side adjustment device 2
0, the actuator 8 is always operated so that the edge of the strip-shaped sheet from the original fabric roll 2 follows the reference position of the original fabric side edge detection device 18. can be prevented from reaching the vicinity.

Therefore, according to this embodiment, it is possible to simultaneously prevent edge breakage of the belt-shaped sheet 1 due to uneven end surfaces of the winding roll 2 and edge breakage caused by deviation of the belt-shaped sheet while moving to the slitter 4.

Example 3 will be explained based on FIG. 4.

In this embodiment, the control device 11 has a servomotor 21 as an adjustment mechanism, which is provided in the adjustment device 10 in order to adjust the proportional sensitivity of the adjustment device IO so that it is proportional to the running speed of the strip sheath 1. The shaft 22a of the proportional sensitivity adjustment potentiometer (sliding resistor) 22 can be rotated, and the control device 11 receives a speed signal from the belt-shaped sheet running speed detection device 23. The electric signal proportional to the speed is compared with the detection signal from the potentiometer 24 that detects the rotation angle of the servo motor 21, and the result is applied to the amplifier 25, and the magnitude of the rotation angle of the servo motor 21 is determined by the magnitude of the belt sheet running speed. In addition, the adjustment device 1O is controlled so that it is proportional to the adjustment device 1 by rotating the shaft 22a of the potentiometer 22.
It is now possible to change the proportional sensitivity of 0,
In the first embodiment, the rotation angle of the shaft 22a is approximately proportional to the proportional sensitivity, and the adjusting device 10 constantly operates the actuator 8 during the winding operation.
Or it is different from Example 2.

Although a small number of embodiments have been described above, the implementation thereof can be varied in various ways depending on the design conditions and the well-known techniques of the designer.

For example, the edge cut prevention device of the present invention is not limited to the winding device of the above-described embodiment, but can also be used in a manner in which a belt-shaped sheet is wound around a single winding shaft, and in which a belt-shaped sheet is divided into a plurality of strips in the longitudinal direction. Applicable to known types of winding devices, such as winding around a single winding shaft, winding a strip sheet divided into multiple parts around a winding shaft supported by individual support devices, etc. can do. Further, the belt-shaped sheet may be unwound by the rotational driving force of the take-up shaft instead of the feeding roller, or the roll may be rotationally driven by a motor provided on the support device for the roll to assist in unwinding. Alternatively, the edge detection device may be provided near the winding shaft of the rewinding machine and used simply as an edge position control device for the belt-shaped sheet.

Further, the actuator is not limited to hydraulic pressure, and may be operated by pneumatic pressure, electric power, or the like.

Furthermore, the edge detection device may be provided not only on the upstream side but also at the same position as the slitter or downstream of the slitter.

Further, as a detection method, a photoelectric method, a pneumatic method, an eddy current method, etc. can be used.

Furthermore, the operation of the regulating device is not limited to being controlled via relay contacts; for example, it is also conceivable that a voltage or current signal is applied directly from the control device to the regulating device. Furthermore, the actuator may be operated intermittently by being able to supply or stop a manipulated variable such as pressure oil between the servo valve and the actuator, and is not limited to an amplifier using an electric circuit. An amplifier using a pneumatic circuit or a hydraulic circuit can be used.

Further, as a control device, for example, a timer circuit is used to set the time at which the adjustment device stops working, and the set value of the delay time of the timer circuit is inversely proportional to the traveling speed based on a detection signal of the traveling speed of the strip sheet. Alternatively, the setting of the on/off interval of the adjusting device may be changed by the control device during winding.

(Effect of the invention) According to this invention, the following effects are achieved.

The position of the edge of the belt-like sheet is automatically controlled so that it passes approximately through the reference position in a portion of the slitter. As a result, the width of the decoratively cut selvage is almost constant, so the selvage is not broken or interrupted (stable winding operation can be performed). Since the direction deviation is corrected, there is no need to complicate the structure of the running path of the strip sheet.Furthermore, most of the components can be provided with commercially available products, making it easy to construct the device. If the anti-roll support device is movable in the width direction of the strip sheet, it is easy to apply the edge cut prevention device of the present invention to an existing winding device.

Furthermore, if a control device is used that controls the adjustment device to operate intermittently based on the detection signal of the running length of the strip sheet,
Stable control can be performed regardless of changes in winding speed.

Also, instead of a control device that operates the adjustment device intermittently,
When equipped with a control device that receives the detection signal from the line speed detection device and has an adjustment mechanism that adjusts the proportional sensitivity of the adjustment device according to the line speed, it is possible to stably and continuously control the strip sheet regardless of the running speed of the strip sheet. The edge position can be controlled. Therefore, smoother control can be achieved than in the case of intermittent operation.

[Brief explanation of drawings]

FIG. 1 is an overall explanatory diagram of a device for preventing edge breakage of a winding device according to the first embodiment, FIG. 2 is an explanatory diagram of the control device, and FIG. 3 is an explanatory diagram of the device for preventing edge breakage of a winding device according to the second embodiment. FIG. 4 is an explanatory diagram of the control device in the edge cut prevention device of the winding device according to the third embodiment. x-band-shaped sheet, 2 raw roll, 4... slitter,
5. Ears, 7. Fabric roll support device, 8. Actuator, 9. Edge detection device, 10. Adjustment device, 11.
・Control device, 18・・Original side edge detection device, 19・−
Actuator for detection device, 20 Original side adjustment device, 21
...Servo motor, 22. Potentiometer, 23. Band-shaped sheet running speed detection device. Patent applicant Katakai Kikai Seisakusho 3Q Figure

Claims (4)

[Claims] (1) In a device for preventing edges from being cut off in a winding device that cuts edges with a slitter while unwinding a strip sheet from a raw roll and winds up the trimmed strip sheet,
a material roll support device that is movable in the width direction of the strip sheet;
an actuator capable of reciprocating the original roll support device in the width direction of the strip sheet; an edge detection device provided near the slitter for detecting a shift in the edge position of the strip sheet; and detection from the edge detection device. Prevention of edge breakage in a winding device, comprising: an adjustment device that receives a signal and operates the actuator to correct the deviation; and a control device that operates the adjustment device intermittently during winding operation. Device. (2) In a device for preventing edges from being cut off in a winding device that cuts edges with a slitter while unwinding a strip sheet from a raw roll and winds up the trimmed strip sheet,
a material roll support device that is movable in the width direction of the strip sheet;
an actuator capable of reciprocally driving the raw roll support device in the width direction of the belt-shaped sheet; and an actuator for detecting a shift in the edge position of the belt-shaped sheet, which is provided near the raw roll so as to be movable in the width direction of the belt-shaped sheet. a side edge detection device; a detection device actuator for reciprocating the original fabric side edge detection device in the width direction of the strip sheet; A sheet side adjustment device that operates an actuator, an edge detection device that detects a shift in the edge position of the strip sheet, which is installed near the slitter, and a detection signal from the edge detection device that detects the detected shift. an adjusting device that operates the actuator for the detection device so that the original side edge detection device moves to a position where the edge of the belt-shaped sheet should move in order to correct the edge of the belt-like sheet; An edge cut prevention device for a winding device, comprising: a control device for controlling the winding device. (3) The control device receives a detection signal from the belt-shaped sheet running length detection device, and adjusts the adjustment device every time the operation of the adjustment device stops and the counted value of the running length of the belt-shaped sheet reaches a required value. The device for preventing edge breakage of a winding device according to claim (1) or claim (2), wherein the device is controlled so that the device starts working. (4) Instead of the control device according to claim (1) or claim (2), a control device has an adjustment mechanism that receives a detection signal from a line speed detection device and adjusts the proportional sensitivity of the adjustment device according to the line speed. A device for preventing edge breakage of a winding device.