JP6344600B2 - Web processing device - Google Patents

Description

  The present invention relates to a web processing apparatus that performs predetermined processing on a web.

  2. Description of the Related Art A web processing apparatus that performs predetermined processing such as coating, bonding, and printing on a web while conveying a web, which is a film-like base material that extends in one direction, in the stretching direction is known. In such a web processing apparatus, a technique for reducing processing defects by detecting a web tension using a tension detector and performing feedback control has been proposed (see Patent Document 1).

JP 2002-145499 A

  The range of tension generated in the web in the web processing apparatus varies depending on the web. The range of tension that can be detected by the tension detector varies depending on the tension detector. In general, the tension detector has a larger error as the detection range is larger. Therefore, when a plurality of types of webs are processed in one web processing apparatus, the detected tension error becomes large for the types of webs processed with a small tension, and it is difficult to appropriately control the tension. Become.

  An object of this invention is to provide the web processing apparatus which can process a various web appropriately in view of the said problem.

In order to achieve the above object, one embodiment of the present invention includes a conveyance unit that conveys a web, a processing unit that performs a predetermined process on the web conveyed by the conveyance unit, and a detection range that is different from each other. A plurality of tension detectors that respectively detect web tension in the processing unit and output detection signals corresponding to the tension, and detection signals output by any of the plurality of tension detectors according to the type of the web The gist of the present invention is a web processing apparatus including a switching unit that outputs a tension and a tension control unit that controls web tension in the processing unit based on the detection signal output from the switching unit.

  ADVANTAGE OF THE INVENTION According to this invention, the web processing apparatus which can process various webs appropriately can be provided by detecting tension | tensile_strength using the tension | tensile_strength detector according to various webs.

It is a typical block diagram explaining the basic composition of the web processing device concerning a 1st embodiment of the present invention. It is an expanded sectional view explaining the processing part of the web processing apparatus concerning a 1st embodiment of the present invention. It is a perspective view explaining the 1st tension detection part of the web processing device concerning a 1st embodiment of the present invention. It is a perspective view explaining the 2nd tension | tensile_strength detection part of the web processing apparatus which concerns on 1st Embodiment of this invention. It is a typical block diagram explaining the fundamental structure of the web processing apparatus which concerns on 2nd Embodiment of this invention. It is a perspective view explaining the tension | tensile_strength detection part of the web processing apparatus which concerns on 2nd Embodiment of this invention.

  Next, first and second embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals, and redundant description is omitted. Further, the following first and second embodiments exemplify apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is a material of a component, The shape, structure, arrangement, etc. are not specified below. The technical idea of the present invention can be variously modified within the technical scope described in the claims.

(First embodiment)
As shown in FIG. 1, the web processing apparatus according to the first embodiment of the present invention includes a sending unit 11 that sends out the web 2, a processing unit 4 that performs predetermined processing on the web 2, a drive unit 31, A tension detection unit 53, a collection unit 12 that collects the web 2, and a drive control unit 9 are provided.

  The web 2 is a belt-like (film shape extending in one direction) base material. The web 2 is made of, for example, a resin film made of polyethylene terephthalate (PET) or the like, or a metal foil made of copper or the like.

  The sending unit 11 includes a cylindrical sending roller around which the web 2 is wound, and a sending motor that rotates the sending roller. The sending unit 11 sends out the web 2 when the sending roller is rotated by the sending motor. The web 2 delivered by the delivery unit 11 is conveyed toward the processing unit 4.

  For example, the processing unit 4 performs predetermined processing such as coating, bonding, and printing on the web 2 to be conveyed. For example, as illustrated in FIG. 2, the processing unit 4 includes a coating unit 41 that coats the surface of the web 2 with the coating liquid L, and a cylindrical first processing roller 42 that guides the web 2 to be transported. A second processing roller 43.

  The first processing roller 42 and the second processing roller 43 are arranged on the upstream side and the downstream side of the coating unit 41 in the processing unit 4, respectively. The first processing roller 42 and the second processing roller 43 are arranged to face the coating unit 41 with the web 2 interposed therebetween so as to sandwich the web 2 with the coating unit 41.

  The coating unit 41 is driven according to the control of the processing unit 4, thereby moving in a direction in which the web 2 is pressed and a direction away from the web 2. The first processing roller 42 and the second processing roller 43 support the web 2 that is pressed by the coating unit 41. The coating unit 41 forms the thin film T on one surface of the web 2 by pressing the web 2 to be conveyed at the tip and discharging the coating liquid L from the tip.

  The driving unit 31 includes a columnar driving roller disposed on the downstream side of the processing unit so as to contact the web 2 processed in the processing unit 4 and a driving motor that rotates the driving roller. The drive unit 31 conveys the web 2 processed in the processing unit 4 when the drive roller is rotated by the drive motor.

  The tension detection unit 53 detects the tension of the web 2 from the cylindrical detection roller disposed so as to come into contact with the web 2 via the driving unit 31 and the rotation axis of the detection roller, and the detected tension And a tension detector that outputs a detection signal according to the above.

  The collection unit 12 includes a columnar collection roller that winds the web 2 via the tension detection unit 53 and a collection motor that rotates the collection roller. The collection unit 12 winds and collects the web 2 processed in the processing unit 4 by rotating the collection roller by the collection motor.

  The drive control unit 9 controls the driving of the sending motor of the sending unit 11, the driving motor of the driving unit 31, and the collecting motor of the collecting unit 12, thereby conveying the web 2 from the sending unit 11 to the collecting unit 12. Function as.

  The web processing apparatus according to the first embodiment includes a first tension detection unit 51, a second tension detection unit 52, a first guide roller 61, a second guide roller 62, a switching unit 7, and a tension control unit 8. And a braking portion 81. The first tension detection unit 51 and the second tension detection unit 52 are respectively disposed between the sending unit 11 and the drive unit 31 to detect the tension of the web 2 in the processing unit 4.

  As shown in FIG. 3, the first tension detector 51 includes a shaft portion 550, a columnar first detection roller 551 that rotates around the shaft portion 550 as a rotation axis, a pair of first holding portions 57, and a pair of A first tension detector 56. The shaft portion 550 is provided through the first detection roller 551 so as to protrude outward from the centers of both bottom surfaces of the first detection roller 551. The 1st holding | maintenance part 57 hold | maintains the both ends of the axial part 550 so that the 1st detection roller 551 can rotate.

  The 1st detection roller 551 is arrange | positioned so that the process may be performed by the process part 4, and may contact the web 2 guided by the 1st guide roller 61, and it rotates when the web 2 is conveyed. The first detection roller 551 is disposed so as to be displaced according to the tension of the web 2 in the processing unit 4.

  The first tension detector 56 has a predetermined detection range and detects the tension of the web 2 in the processing unit 4. The first tension detector 56 includes a main body portion 561 and a movable portion 562 installed on the main body portion 561 so as to be displaceable with respect to the main body portion 561. The main body 561 outputs a detection signal corresponding to the amount of displacement of the movable part 562. When the first holding portion 57 is fixed to the movable portion 562, the first tension detector 56 detects the displacement amount of the first detection roller 551 according to the tension of the web 2, and a detection signal according to the displacement amount. Is output to the switching unit 7.

  As shown in FIG. 4, the second tension detector 52 includes a shaft portion 550, a columnar second detection roller 552 that rotates around the shaft portion 550 as a rotation axis, a pair of second holding portions 59, and a pair of A second tension detector 58. The second tension detector 52 is disposed on the downstream side of the first tension detector 51 so as to be adjacent to the first tension detector 51. The shaft portion 550 is provided through the second detection roller 552 so as to protrude outward from the centers of both bottom surfaces of the second detection roller 552. The second holding unit 59 holds both end sides of the shaft portion 550 so that the second detection roller 552 can rotate.

  The 2nd detection roller 552 is arrange | positioned so that the web 2 which passed through the 1st tension | tensile_strength detection part 51 may be contacted, and it rotates when the web 2 is conveyed. The second detection roller 552 is arranged to be displaced according to the tension of the web 2 in the processing unit 4.

  The second tension detector 58 has a predetermined detection range and detects the tension of the web 2 in the processing unit 4. The second tension detector 58 includes a main body part 581 and a movable part 582 installed on the main body part 581 so as to be displaceable with respect to the main body part 581. The main body portion 581 outputs a detection signal corresponding to the amount of displacement of the movable portion 582. When the second holding portion 59 is fixed to the movable portion 582, the second tension detector 58 detects the displacement amount of the second detection roller 552 according to the tension of the web 2, and a detection signal according to the displacement amount. Is output to the switching unit 7.

  The switching unit 7 receives the detection signals output from the first tension detector 56 and the second tension detector 58, respectively, and the detection output from either the first tension detector 56 or the second tension detector 58. A signal is output to the tension controller 8. The switching unit 7 includes, for example, an input device that receives an operator's operation, and switches a detection signal to be output to the tension control unit 8 in accordance with the operator's operation on the input device. For example, the switching unit 7 refers to a database that associates the type of the web 2 and the detection range of the tension in accordance with the operation of the operator who designates the type of material, size, etc. of the web 2. The detection signal to be output may be selected and switched.

  The tension control unit 8 receives the detection signal output from the switching unit 7 and controls the driving of the braking unit 81 according to the input detection signal. The braking unit 81 is a brake device that brakes the conveyed web 2 on the upstream side of the processing unit 4. The tension control unit 8 controls the tension of the web 2 between the drive unit 31 and the braking unit 81, that is, the processing unit 4 by controlling the braking unit 81 based on the input detection signal. When the tension control unit 8 controls the tension of the web 2 in the processing unit 4 to be constant, a uniform thin film T can be formed, and the processing accuracy in the processing unit 4 can be improved.

  The first tension detector 56 and the second tension detector 58 have different detection ranges. For example, the first tension detector 56 has a detection range of 0 to 100N, and the second tension detector 58 has a detection range of 0 to 500N. For example, the switching unit 7 outputs the detection signal output from the first tension detector 56 to the tension control unit 8 when the type of the web 2 is a resin film having a relatively small tension. The switching unit 7 outputs the detection signal output from the second tension detector 58 to the tension control unit 8 when the type of the web 2 is a metal foil having a relatively large tension.

  The tension of the resin film can also be detected by the second tension detector 58. However, since the tension detector generally has a larger error as the detection range is larger, when the tension of the resin film is detected by the second tension detector 58, the error becomes larger.

  The web processing apparatus according to the first embodiment can be used by switching a plurality of tension detectors having different detection ranges according to the type of the web 2. Therefore, since the web processing apparatus according to the first embodiment can detect the tension of the various webs 2 with high accuracy, the various webs 2 can be appropriately processed, and the processing of the various webs 2 can be performed. Accuracy can be improved.

(Second Embodiment)
In the web processing apparatus according to the second embodiment of the present invention, as shown in FIGS. 5 and 6, the tension detector 5 includes a first tension detector 56 and a second tension detector 58 having different detection ranges. It differs from the first embodiment in that it has such as. Other configurations not described in the second embodiment are substantially the same as those in the first embodiment and are omitted because they are duplicated.

  The web processing apparatus according to the second embodiment includes a delivery unit 11, a plurality of drive units 32 and 33, a processing unit 4, a plurality of tension detection units 5, 53 and 54, an idler roller 63, and a collection unit 12. A drive control unit 9, a switching unit 7, and a tension control unit 8.

  The tension detecting unit 53 is disposed on the downstream side of the sending unit 11 so as to be adjacent to the sending unit 11. The tension detection unit 53 detects the tension of the web 2 from the cylindrical detection roller disposed so as to be in contact with the web 2 sent out by the sending unit 11, and the displacement of the detection roller, and according to the detected tension A tension detector for outputting the detected signal. The drive control unit 9 controls the drive of the delivery motor of the delivery unit 11 based on the tension of the web 2 detected by the tension detection unit 53.

  The drive unit 32 includes a columnar drive roller disposed upstream of the processing unit 4 so as to contact the web 2 via the tension detection unit 53 and a drive motor that rotates the drive roller. The driving unit 32 conveys the web 2 sent out by the sending unit 11 when the driving motor rotates the driving roller according to the control of the driving control unit 9.

  The tension detection unit 54 is disposed on the upstream side of the collection unit 12. The tension detection unit 53 detects the tension of the web 2 from the cylindrical detection roller disposed so as to come into contact with the web 2 processed by the processing unit 4, and the displacement of the detection roller, and the detected tension And a tension detector that outputs a detection signal according to the above. The drive control unit 9 controls the drive of the collection motor of the collection unit 12 based on the tension of the web 2 detected by the tension detection unit 54.

  The idler roller 63 is disposed between the tension detection unit 54 and the collection unit 12 so as to come into contact with the web 2, and guides the web 2 via the tension detection unit 54 to the collection unit 12.

  The drive control unit 9 controls the driving of the sending motor of the sending unit 11, the driving motor of the driving unit 32, and the collecting motor of the collecting unit 12, thereby conveying the web 2 from the sending unit 11 to the collecting unit 12. Function as.

  The drive unit 33 includes a columnar drive roller disposed on the downstream side of the processing unit 4 so as to come into contact with the web 2 processed by the processing unit 4, and a drive motor that rotates the drive roller. The drive unit 33 controls the tension of the web 2 with the drive unit 32, that is, the tension of the web 2 in the processing unit 4, by the drive motor rotating the drive roller at a speed according to the control of the tension control unit 8. To do.

  The tension detection unit 5 is disposed between the drive unit 32 and the processing unit 4 to detect the tension of the web 2 in the processing unit 4. As shown in FIG. 6, the tension detection unit 5 includes a shaft portion 550, a columnar detection roller 55 that rotates about the shaft portion 550 as a rotation axis, a pair of first holding portions 57, and a pair of second holding portions 59. A pair of first tension detectors 56 and a second tension detector 58.

  The shaft portion 550 is provided through the detection roller 55 so as to protrude outward from the centers of both bottom surfaces of the detection roller 55. The 1st holding | maintenance part 57 each hold | maintains the both ends of the axial part 550 so that the detection roller 55 can rotate. The second holding part 59 holds both end sides of the shaft part 550 outside the first holding part 57 so that the detection roller 55 can rotate.

  The detection roller 55 is arrange | positioned so that the web 2 conveyed from the drive part 32 may be contacted, and rotates when the web 2 is conveyed. The detection roller 55 is disposed so as to be displaced according to the tension of the web 2 in the processing unit 4.

  The first tension detector 56 and the second tension detector 58 have different detection ranges, respectively, and detect the tension of the web 2 in the processing unit 4. The first tension detector 56 and the second tension detector 58 respectively detect the displacement amount of the detection roller 55 according to the tension of the web 2, and output a detection signal according to the displacement amount to the switching unit 7.

  The switching unit 7 receives the detection signals output from the first tension detector 56 and the second tension detector 58, respectively, and the detection output from either the first tension detector 56 or the second tension detector 58. A signal is output to the tension controller 8.

  The tension control unit 8 receives the detection signal output from the switching unit 7 and controls the driving of the driving unit 33 in accordance with the input detection signal. The tension control unit 8 controls the tension of the web 2 between the driving unit 32 and the driving unit 33, that is, the processing unit 4 by controlling the rotation speed of the driving unit 33 based on the input detection signal. When the tension control unit 8 controls the tension of the web 2 in the processing unit 4 to be constant, a uniform thin film T can be formed, and the processing accuracy in the processing unit 4 can be improved.

  The web processing apparatus according to the first embodiment can be used by switching a plurality of tension detectors having different detection ranges according to the type of the web 2. Therefore, since the web processing apparatus according to the first embodiment can detect the tension of the various webs 2 with high accuracy, the various webs 2 can be appropriately processed, and the processing of the various webs 2 can be performed. Accuracy can be improved.

(Other embodiments)
As described above, the present invention has been described according to the first and second embodiments. However, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  For example, in the first and second embodiments already described, the processing unit 4 may perform printing, bonding, and the like on the web 2. The tension control unit 8 detects the tension of the web 2 in the processing unit 4 with high accuracy by detecting the tension of the web 2 in the processing unit 4 with high accuracy using a tension detection unit corresponding to the type of the web 2. Can be controlled.

  In addition to the above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

2 Web 4 Processing unit 7 Switching unit 8 Tension control unit 9 Drive control unit (conveyance unit)
55 Detection Roller 56 First Tension Detector 58 Second Tension Detector 551 First Detection Roller 552 Second Detection Roller

Claims (3)

A transport unit for transporting the web;
A processing unit that performs a predetermined process on the web conveyed by the conveyance unit;
A plurality of tension detectors each having a different detection range, each detecting a tension of the web in the processing unit, and outputting a detection signal corresponding to the tension;
A switching unit that outputs a detection signal output by any of the plurality of tension detectors according to the type of the web ;
A web processing apparatus comprising: a tension control unit that controls tension of the web in the processing unit based on a detection signal output by the switching unit. A plurality of detection rollers arranged in contact with each of the webs and displaced according to the tension of the web in the processing unit;
The web processing apparatus according to claim 1, wherein the plurality of tension detectors respectively detect the tension of the web in accordance with each displacement amount of the plurality of detection rollers. Further comprising a detection roller arranged to contact the web and displace according to the tension of the web in the processing section;
The web processing apparatus according to claim 1, wherein the plurality of tension detectors respectively detect the tension of the web in accordance with a displacement amount of the detection roller.

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