JP2012171750A - Conveying speed control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveying speed control system controlling a conveying speed of a belt-like body and stopping the belt-like body at the position where non-defective product parts are to be connected to each other even when a plurality of defective position identifying labels are applied to the belt-like body which is wound into a roll-like form.SOLUTION: The conveying speed control system includes: a means for paying out the belt-like body with the applied defective position identifying labels from the roll and conveying the same; a means for detecting the outer circumferential part of the roll on the outer side of the positions of the labels in the radial direction of the roll and near the labels; a mechanism for moving the means for detecting the outer circumferential part of the roll to the position near them; a means for computing a conveying length of the belt-like body until the speed of conveying the belt-like body having the applied labels is controlled and reduced and the conveyance is stopped based on the position information near them, the position information where the identifying labels are applied, and thickness information of the belt-like body; a means for reducing the conveying speed and conveying the belt-like body by the computed conveying length; and a means for stopping the conveyance of the belt-like body.

Description

  The present invention reduces the conveying speed of the long band-shaped body from the position before the position for applying the defective portion identification label applied to the long band-shaped body such as various films and paper, and provides the position for applying the defective portion identification label. It is related with the conveyance speed control system of the strip | belt-shaped body stopped by.

  FIG. 1 is a diagram schematically showing a case where printing or coating is performed on a long strip such as various films or paper. A long belt-like body 101 is unwound from an original fabric roll 100 such as various films or paper, and after printing or coating is performed by a printing unit or a coating unit 102, the film is wound on a roll 103. At this time, inspection for detecting various defective portions is performed by the defect inspection machine 104. When a defect is found by this inspection, in order to remove the defective portion in a subsequent process, a defective portion identification label is attached to the defective portion portion of the strip by one of the end portions in the width direction of the strip. And then wound on a roll 103 having a winding core 107. In addition, when there are a plurality of defects on one roll, a plurality of defective part identification labels are provided. FIG. 2A is a schematic view of the defective portion identification label 106 attached to the long band wound around the roll 103 as seen from the side, and FIG. 2B is a view seen from the front. An example in which five defective portion identification labels are given is shown.

  For example, when the process of removing the defective part is a slitter process, the operator detects the defective part identification label applied in the printing or coating process while unwinding and transporting the roll-shaped strip in the slitter process. . Then, the defective part removal mechanism part cuts out and discards the part of the defective part to which the defective part identification label is given, and connects the non-defective part.

  The work of cutting out the defective part and connecting the non-defective parts needs to be performed after temporarily stopping the unwinding and transport of the belt-like body. Therefore, it is necessary to detect by some method whether or not the portion to which the defective portion identification label is attached is approaching.

  As an example of a conventional method for an operator to detect whether or not the portion to which the defective portion identification label of the belt-like body is provided is approaching, there is the following. That is, when applying the defective part identification label, the defective part identification label is affixed to the band so that a part of the defective part identification label protrudes from the end in the width direction of the band. . When detecting the defective part identification label, the operator visually confirms the defective part identification label protruding from the end of the roll-shaped belt, and the part to which the defective part identification label is applied is likely to be unwound. When the position is reached, the transport mechanism is operated at a low speed or stopped, and the defective portion of the belt-like body is removed and the non-defective part is reconnected. However, in order to visually confirm the defective part identification label, the worker must be constantly aware of the defective part identification label while performing other work. In addition, in order to avoid oversight, work efficiency deteriorates because there is a situation where the user enters a waiting state such as going to a work place where reconnection is made early and waiting.

  In Patent Document 1, the remaining amount of the supply roll is adjusted in the component supply device by adjusting the optical axes of the light emitting element and the light receiving element to arbitrary positions to detect the replacement time. Although the technique of this patent document 1 can detect the remaining amount of the supply roll in the wound state in the radial direction height, only the remaining amount of the winding is detected. It is not possible to deal with a case where a plurality of sheets are provided on the same roll.

Japanese Utility Model Publication No. 4-12698

  The present invention has been made in view of the above-described problem, and even when there are a plurality of defective portion identification labels provided on a strip wound in a roll shape, the position at which the conveyance speed of the strip is controlled and the non-defective parts are connected. An object of the present invention is to provide a transport speed control system that can stop the belt-like body.

Invention of Claim 1 is a system which controls the conveyance speed at the time of unwinding and conveying the strip | belt-shaped body which was wound up in roll shape and was provided with the defect location identification label,
Means for unwinding and transporting the belt-like body provided with the defective part identification label from the roll;
Means for detecting the outer peripheral portion of the roll at the outer position in the radial direction of the roll from the position of the defective portion identification label and in the vicinity of the defective portion identification label;
A mechanism for moving the means for detecting the outer periphery of the roll to the adjacent position;
After detecting the outer peripheral portion of the roll, the transport of the band-shaped body provided with the defective part identification label based on the adjacent position information, the position information provided with the defective part identification label, and the thickness information of the band-like body Means for calculating the conveyance length of the belt until the speed is controlled and stopped,
Means for decelerating and transporting the calculated transport length;
And a means for stopping conveyance of the belt-like body after carrying out the deceleration control conveyance.

  The invention according to claim 2 is the transport speed control system according to claim 1, wherein the means for detecting the outer periphery of the roll has a light transmitting / receiving part and a light reflecting part.

  According to the transport speed control system of the present invention, even if a defective part identification label is attached to any part of the belt-like body, the transport speed is automatically reduced when the roll outer periphery reaches the set height, and the defective part is further reduced. It becomes possible to stop the conveyance before the position where the identification label is given, and it becomes unnecessary for the operator to monitor the position of the defective part identification label. As a result, the work efficiency can be improved, and the defective part is further improved. The oversight of the identification label can be prevented.

The figure which showed typically the case where printing and coating are performed to elongate strip | belt bodies, such as various films and paper. The figure which shows a defective location identification label. (A) is the schematic diagram which looked at the defect location identification label from the side. (B) is the figure seen from the front. The figure which shows an example of the slitter apparatus with which the conveyance speed control system of this invention is applied. The schematic block diagram which shows an example of the conveyance speed control system of this invention. The figure which shows the mechanism which moves the roll outer peripheral part detection part of the conveyance speed control system of this invention, and a roll outer peripheral part detection part. (A) is a figure which shows having performed the position adjustment of the light transmission / reception part. (B) is a figure which shows the case where a light transmission / reception part detects a roll outer peripheral part. The figure for demonstrating the method of calculating | requiring the conveyance length L of the strip | belt-shaped body until deceleration control of the conveyance speed control system of this invention is stopped. The figure which shows an example of conveyance speed transition at the time of performing deceleration control by the conveyance speed control system of this invention. The figure which shows an example of the position adjustment of the light transmission / reception part of the conveyance speed control system of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a view showing an example of a slitter apparatus to which the conveyance speed control system of the present invention is applied.

  The defective part identification label 1 has already been applied to the roll 2 that has wound up the long strip 101 subjected to printing or coating. The defective portion identification label 1 is affixed so that a part thereof protrudes from the end of the roll 2 in the width direction. The long strip 101 wound around the roll 2 is unwound from the roll 2 and provided in the slitter device 3 in the slitter process shown in FIG. While being transported by a transport device which is a means for transporting the strip-shaped body, it is slit into a plurality of strip-shaped bodies and wound around the roll 4-1 and the roll 4-2 narrower than the roll 2. Although FIG. 3 shows an example in which two strips are slit, the number of strips is appropriately selected.

  FIG. 4 is a schematic configuration diagram showing an example of a conveyance speed control system according to the present invention. The conveyance speed control system 10 includes a conveyance unit 11 that is a unit that unwinds and conveys the belt-like body to which the defective portion identification label is attached, and the outer side in the radial direction of the roll from the position of the defective portion identification label. A roll outer periphery detection unit 12 that is a means for detecting the outer periphery of the adjacent position, a mechanism 13 that moves the roll outer periphery detection unit 12 to the adjacent position, and further, after detecting the outer periphery of the roll, the proximity The conveyance of the band-like body provided with the defective portion identification label is decelerated and stopped based on the position information 14, the position information 15 provided with the defective portion identification label, and the thickness information 16 of the band-like body. A transport length calculation processing unit 17 which is a means for calculating the transport length of the belt-shaped body, a speed reducer 18 which is a means for decelerating transport for the calculated transport length, and transport of the belt-shaped body after deceleration control It includes a stop device 19 is a means for stopping, the.

  In this case, the transport unit 11 can use a device for driving the winding roll and the winding roll of the belt-shaped body provided in the slitter device 3.

  FIG. 5 is a diagram showing a roll outer periphery detection unit 12 and a mechanism 13 that moves the roll outer periphery detection unit 12. The roll outer peripheral part detection part 12 is for detecting the roll outer peripheral part 2a, and comprises a light transmitting / receiving part 12a and a light reflecting part 12b. The light transmission / reception unit 12a is outside the position of the defective part identification label in the radial direction of the roll, and is close to the height of the adjacent position, that is, a position G above the defective part identification label 1 shown in FIG. Adjusted. The position of the light transmitting / receiving unit 12 a is adjusted along the direction of the arrow 20 by the slide rail 13. When the roll 2 is unwound as shown in FIG. 5 (b), the diameter of the roll gradually decreases, and the roll outer peripheral part 2a reaches the adjusted height of the light transmitting / receiving part 12a, the light reflecting part 12b The reflected light is detected by the light transmitting / receiving unit 12a, and a detection signal is output from the light transmitting / receiving unit 12a. Here, as the light transmission / reception unit 12a, for example, a light transmission / reception sensor having a light transmission unit that emits a laser beam of an ultra-fine light projecting spot type that has excellent linearity and a light reception unit using a photodiode can be adopted, and the light reflection unit 12b. A general-purpose reflecting mirror can be used.

When a signal for detecting the outer peripheral portion of the roll is output from the light transmitting / receiving unit 12a, the detection signal is sent to the conveyance length calculation processing unit 17. The transport length here refers to the transport length of the strip until the transport of the strip provided with the defective part identification label is decelerated and stopped. The conveyance length calculation processing unit 17 determines the conveyance length based on the positional information 14 that is close when the detection signal is received, the positional information 15 that is provided with the defective portion identification label, and the thickness information 16 of the strip. calculate. FIG. 6 is a diagram for explaining a method for calculating the transport length of the belt until deceleration and stop. FIG. 6 shows the transport length of the belt-like body until deceleration control is stopped, that is, the length L of the belt-like body between the defective portion identification label 1 given to the roll 2 and the outer peripheral portion 2a where the outer peripheral portion is detected. It is a figure for demonstrating the calculation method, and is calculated | required by the following (Formula 1).
That is, L = Π (D ² −d ² ) / 4t (Expression 1)
Here, Π is the circular ratio D is the size of the outer diameter (mm) obtained from the position information 2a where the light transmitting / receiving unit 12a detects the outer periphery of the roll
d is the size of the outer diameter (mm) obtained from the position information to which the defective part identification label is attached.
t is the thickness of the strip (mm)
It is assumed that there are no gaps between the band-like bodies around which the band-like body is wound, but the thickness t of the band-like body due to the gaps is appropriately increased in consideration of the strength of winding of the band-like body of the roll 2. Is desirable.

  The outer diameter D obtained from the position information 2a at which the roll outer periphery detecting unit 12 has detected the outer periphery of the roll, the outer diameter d obtained from the position information provided with the defective portion identification label, The body thickness t is input to the transport length calculation processing unit 17, but may be manually input in advance or input via a factory network.

  FIG. 7A is a diagram showing an example of the controlled conveyance speed transition after the light transmitting / receiving unit 12a detects the outer periphery of the roll. From the time 31 when the light transmitting / receiving unit 12a detects the outer periphery of the roll, feedback control is applied to the speed controller of the transport device, and the belt is transported to the time indicated by 32 while being decelerated by the speed reducer. Thereafter, stop control is started from the time indicated by 32, and finally the calculated length L of the belt-like body is conveyed and stopped at the time indicated by 33. In this case, the conveyance length of the belt may be controlled by decelerating by the length of the calculated belt by integrating the yard meter pulses (for example, 1 m / pulse) obtained from the slitter device.

  For example, in the case of FIG. 7 (a), the belt length L from the time point 31 to the time point 32 is 15m, and the speed reduction control is further performed. The stop control is started at the point of time, and it is stopped after conveying 5 m to the point of time 33.

  FIG. 7B is a diagram illustrating an example of conveyance control different from that in FIG. The feedback control is applied to the speed controller of the conveying device from the time 41 when the light transmitting / receiving unit 12a detects the outer periphery of the roll, and the belt is conveyed to the time indicated by 42 while being decelerated by the reduction device. Thereafter, the sheet is conveyed at a constant speed from the time indicated by 42 to the time indicated by 43. From time 43, manual speed control is started by the operator and finally stopped at time 44.

  After that, when the defective part to which the defective part identification label 1 is given reaches the defective part removing mechanism part, the defective part removing mechanism part (not shown) performs a work to reconnect the defective part removing work and the non-defective part by the worker at the time of arrival. . After these operations are completed, the conveyance is resumed. When there are a plurality of defective portion identification labels 4, the height of the light transmitting / receiving unit 12a is adjusted again in the outer peripheral direction of the next defective portion identification label.

  In the above description, the case where the position adjustment of the light transmitting / receiving unit 12a is performed by an operator is exemplified. However, when a large number of defective portion identification labels are provided, the position adjustment is performed by using, for example, the means shown in FIG. Can reduce the load. The position where the defective part identification label is given (that is, the distance from the winding core to the position where the defective part identification label is given) is input in advance from the distance data input unit 51 to the distance data storage unit 52, and Position adjustment may be performed by driving the transmitter / receiver unit by transmitting the stored distance data to the transmitter / receiver unit driving device 53 via the factory network. In this case, the slide rail 13 is provided with a linear encoder, whereby the position of the light transmitting / receiving unit 12a can be adjusted.

  As described above, according to the conveyance speed control system of the present invention, the position where the defective portion identification label is applied can be accurately detected by the defective portion removing mechanism section, regardless of where the defective portion identification label is applied. As a result, there is no need for the operator to monitor the position where the defective portion identification label is applied, work efficiency can be improved, and oversight of the defective portion identification label can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Defect location identification label 2 ... Roll 2a ... Roll outer peripheral part 3 ... Slitter apparatus 4-1, 4-2 ... Roll narrower than roll 2 ... Conveyance speed control System 11 ... Conveying unit 12 ... Roll outer periphery detection unit 12a ... Transmission / reception 12b ... Light reflection unit 13 ... Mechanism for moving the roll outer periphery detection unit (slide rail)
14 ... Position information 15 for detecting the outer peripheral part of the roll 15 ... Position information 16 to which the defective part identification label is given ... Thickness information 17 for the strip-shaped body 17 ... Conveyance length calculation processor 18 ... Deceleration device 19 ... Stop device 20 ... Arrow 31 indicating the direction in which the light transmission / reception unit is moved 31 ... When the outer periphery of the light transmission / reception unit roll is detected and deceleration control is started 32 ... Stop control Time point 33 when started ... Time point 41 when stopped ... Time point when the outer periphery of the light transmission / reception unit roll is detected and deceleration control is started 42 ... Time point when conveyance at a constant speed is started 43 ... Time point 44 at which manual speed control is started ... Time point 51 at which it stops ... Distance data input unit 52 ... Distance data storage unit 53 ... Transmitter / receiver drive device 100 ... Original film, paper, etc. Anti-roll 101 ... long strip 102 ... Printing unit, coating unit 103 ... roll 104 ... defect inspector 105 ... labeler 106 ... defect spot identification label 107 ... winding core

Claims (2)

A system for controlling the transport speed when unrolling and transporting a belt-like body wound in a roll shape and provided with a defective portion identification label,
Means for unwinding and transporting the belt-like body provided with the defective part identification label from the roll;
Means for detecting the outer peripheral portion of the roll at the outer position in the radial direction of the roll from the position of the defective portion identification label and in the vicinity of the defective portion identification label;
A mechanism for moving the means for detecting the outer periphery of the roll to the adjacent position;
After detecting the outer peripheral portion of the roll, the transport of the band-shaped body provided with the defective part identification label based on the adjacent position information, the position information provided with the defective part identification label, and the thickness information of the band-like body Means for calculating the conveyance length of the belt until the speed is controlled and stopped,
Means for decelerating and transporting the calculated transport length;
Means for stopping conveyance of the belt-like body after carrying out the deceleration control conveyance.   2. The conveyance speed control system according to claim 1, wherein the means for detecting the outer periphery of the roll has a light transmitting / receiving part and a light reflecting part.

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