JP2013023350A - Decurling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decurling device applicable to various kinds of sheets and capable of preventing a sheet surface from being damaged, and of preventing a coating agent applied to the sheet surface from being scraped off.SOLUTION: The decurling device constituted of a decurling members 9, 9a, 9b disposed downstream of a decurling roller 3 whereon a continuous sheet 1 which continuously travels is wound, rotating in accordance with the travelling of the continuous sheet, for decurling bars 11, 11a to be allowed to contact a face opposite to the other face contacting the decurling roller, of the continuous sheet wound thereon, with the decurling members comprising the decurling bars each having a circular circumferential face and held on the front ends of holding plates 10, 10a respectively, and of a guide roller 7b disposed downstream of the decurling members to allow the continuous sheet contacting the decurling bars of the decurling members to travel to return from the decurling bars, is characterized in that the decurling members are constructed in a manner of enabling the decurling bars to move in the travelling direction of the continuous sheet wound on the decurling roller.

Description

  The present invention relates to a decurling apparatus that removes curl generated in the running direction of continuous paper in a continuous paper processing apparatus that performs printing on continuous paper and various types of processing.

  The continuous paper supplied from the roll paper has the curl due to the winding of the roll paper. Further, the continuous paper fed from the paper feeding unit and printed by the printing unit may curl on the front side or the back side due to the difference in printing density between the front surface and the back surface of the continuous paper.

  The curl may remain on a sheet of paper cut by the cutting device after printing the continuous paper thus curled and after processing such as perforation, which may cause inconvenience in subsequent handling.

  For this reason, on the continuous paper supplied from the roll paper, printing is performed by the printing unit according to the running of the paper, and then the perforation and the file punch hole are processed by the processing unit and then cut into a sheet by a cutting device. If the continuous paper thus formed is in the processing apparatus, a decurling device for removing the curl is provided on the running path of the continuous paper.

  A conventional decurling apparatus of this type is such that, for example, as shown in FIG. 1, the top of a decal bar b having a square top is pressed against one surface of continuous paper a (see Patent Document 1), or FIG. As shown in FIG. 4, a decal bar d rotatably supported by backup bearings c1 and c2 at two locations on the circumferential support side is pressed against the surface of continuous paper a (see Patent Document 2). Are known.

Japanese Patent Application Laid-Open No. 2003-275995 JP 2009-208937 A

  In the former technique described above, the corner of the decurling bar b is pressed against the surface of the running continuous paper a, so the curl removal effect is high, but the paper surface is damaged. In the case of a label paper or the like, problems such as peeling off of the coating agent applied to the surface of the paper or separation of the label adhered and held on the surface of the label paper occur.

  Further, in the latter of the above prior arts, there is a limit in the winding angle when winding around the rotating decal bar due to the presence of the backup bearings c1 and c2, and the winding angle with respect to the peripheral surface of the rotating decal bar becomes large. However, a sufficient curl removal effect could not be obtained, and there was room for improvement in this aspect.

  The present invention has been made in view of the above, and can prevent the surface of the paper from being damaged or the coating agent applied to the surface of the paper from being peeled off or scraped off, and can be applied to various types of paper. An object of the present invention is to provide a decurling apparatus capable of obtaining a curl removing effect on paper.

  In order to achieve the above object, a decurling apparatus according to the present invention is a decurling bar having a circular peripheral surface on the downstream side of a decurling roll wound around continuous paper that is continuously run and rotated according to the running of the continuous paper. The decal member is supported by the tip of the support plate so that the decal bar of the decal bar comes into contact with the surface opposite to the surface of the continuous paper that is wound around the decal roll. A guide roll is provided on the downstream side of the decurling member so that the continuous paper contacting the decurling bar of the decurling member travels back from the decurling bar, and the decurling member is wrapped around the decurling roll. It is configured to move in the traveling direction.

Both the decal members are configured such that the decal bar of the decal member is rotatably supported by a support plate, or the decal bar of the decal member is fixed to the support plate.
The decal bar that is rotatably supported by the support plate is rotatably supported by brackets fixed to the both ends of the support plate at both ends of the decal bar. In this configuration, a part of the circumferential direction is supported by a sliding bearing member fixed to the tip of the support plate so as to be able to slide and rotate.

  Both the decurling members are used selectively, or the two decurling members are overlapped so that the respective decurling bars can move relatively in the direction in which the winding angle of the continuous paper with respect to the decurling roll increases or decreases.

  In the decal device configured as described above, the support shaft that rotatably supports the decal roll is rotatably supported on the frame, a decal member is coupled to the decal lever fixed to the support shaft, and the support shaft is attached to the support shaft. It has a configuration in which rotating drive units are coupled.

  According to the decurling device of the present invention, the decurling bar contacts the surface opposite to the rolling contact surface of the continuous paper wound around the decurling roll with the circumferential surface, whereby the surface of the paper that is decurled. It is possible to prevent the coating agent applied to the paper surface from being scraped off.

  By moving the decal bar in the running direction of the continuous paper, the wrap angle of the continuous paper with respect to the decal roll can be increased or decreased. By this movement of the decal bar, the wrap angle of the continuous paper with respect to the decal bar is increased or decreased. The decurling effect of the decurling bar can be adjusted over a wide range. In particular, by moving the decurling bar in a direction in which the wrapping angle of the continuous paper with respect to the decurling roll is increased, The wrapping angle with respect to the paper becomes large, and the folding running angle of the continuous paper by the decurling bar can be made acute, and the thin paper that is difficult to remove curl can be decurled well.

In particular, in the decurling apparatus according to claim 2 of the present invention, the decurling bar can be rotated to remove the curl without damaging the surface of the coated paper or the label paper.
In the decurling device according to claim 3, the rotating decurling bar is supported not only at both ends but also by a sliding bearing member at an intermediate portion thereof, so that the decurling action can be performed without deformation even in an elongated decurling bar. can do.

  Further, in the decurling apparatus according to the fourth aspect, it is possible to satisfactorily remove the curl of the continuous paper, which is suitable for removing the curl by sliding contact.

  Further, in the decurling device according to claim 5, the decurling device according to the present invention can be widened by selectively using both the decurling members separately or in a stacked state.

  Further, in the decal device according to claim 6, the decal device is coupled to a decal lever fixed to a support shaft that supports the decal roll, and the decal member is rotated by a rotation drive device to rotate the decal member. By doing so, it has a wide range of applicability with a simple component configuration and structure that only adjusts the rotational position of the decal bar around the decal roll, and it has excellent operability, economy, and versatility. A decal device having the technology can be obtained.

It is a schematic explanatory drawing which shows the conventional decal apparatus. It is a schematic explanatory drawing which shows the other conventional decurling apparatus. 1 is a side view schematically showing an embodiment of a decal device according to the present invention. 1 is a front view schematically showing an embodiment of a decal device according to the present invention. It is a top view which shows the 1st Embodiment of this invention. It is a side view which shows the 1st Embodiment of this invention. It is sectional drawing which follows the AA line of FIG. It is a side view which shows the 2nd Embodiment of this invention. It is a side view which shows the 3rd Embodiment of this invention roughly.

  An embodiment of the present invention will be described with reference to FIGS.

  FIG. 3 shows a decurling device 2 interposed during the running of the continuous paper 1 in the continuous paper processing apparatus. Reference numeral 3 denotes a continuous paper 1 running around the continuous paper processing apparatus. It is a decal roll that rotates freely according to the travel of As shown in FIG. 4, the decal roll 3 is rotatably supported on a support shaft 5 rotatably supported by front and rear frames (operator side, prime mover side) 4a and 4b. The support shaft 5 is connected to the operator-side frame 4a via the worm wheel device 6. By operating the worm wheel device 6 with a drive device such as an electric motor, the support shaft 5 is rotated in the rotational direction. The phase can be changed. Guide rolls 7 a and 7 b are arranged on both sides of the decal roll 3 in the running direction of the continuous paper 1.

  Decal levers 8a and 8b are fixedly provided on the support shaft 5 on both sides in the axial direction of the decal roll 3, and are fixed to both ends of the decal levers 8a and 8b in a state where both ends of the decal member 9 are bridged. It has come to be. The decal member 9 includes a support plate 10 and a decal bar 11 attached to the tip of the support plate 10. The support plate 10 is arranged so that the decal bar 11 faces the downstream side in the rotation direction of the decal roll 3. The decal levers 8a and 8b are detachably attached.

  In this embodiment, the decal bar 11 is rotatably attached to the support plate 10.

  The decurling member 9 in this embodiment is as shown in FIGS. 3 to 5, and brackets 12 a and 12 b are fixed to both side ends of a support plate 10 that supports the decurling bar 11. Both end portions of the decal bar 11 are rotatably supported by the bearing member 13. An intermediate portion of the decal bar 11 is supported on the tip of the support plate 10 via a sliding bearing member 14. The sliding bearing member 14 is configured to come into contact with a part of the decal bar 11 in the circumferential direction on the support plate 10 side in an arc shape, and is provided over the entire length of the support plate 10 or at a plurality of partial locations. These are fixed to the support plate 10 with an adhesive or screws.

  As described above, the decurling member 9 is arranged so that the decurling bar 11 faces the downstream side in the running direction of the continuous paper 1 wound around the decurling roll 3, and is located on the downstream side of the decurling roll 3. The guide roll 7b is disposed at a position where the continuous paper 1 wound around the decal roll 3 travels in the direction of turning back upstream, and the continuous paper 1 is wound around the decal bar 11 at an acute angle. Yes. In this case, the winding angle becomes sharper as the diameter of the decal bar 11 is smaller. The diameter of the wrapping angle is preferably as small as possible. In this embodiment, a 4 mm one was used. The tip of the support plate 10 that supports the decurling bar 11 is tapered (saddle-shaped) as shown in FIG. 7 so as not to interfere with the continuous paper 1 wound around the decurling bar 11 at an acute angle.

  In the above configuration, as shown in FIG. 3, the continuous paper 1 is wound around the decurling unit 3 from the upstream guide roll 7 a and then around the decurling bar 11 of the decurling member 9, as shown in FIG. 3. The paper is passed through the side guide roll 7b.

  In this state, the continuous paper 1 that has been run from the upstream side of the continuous paper processing apparatus is wound around the decal roll 3 from the upstream guide roll 7a and then turned back at an acute angle by the decal bar 11, and then downstream. Then, the paper is continuously traveled downstream of the continuous paper processing apparatus from the side guide roll 7b. The continuous paper 1 that passes through the decurling device 2 is wound around the decurling bar 11 at an acute angle from the peripheral surface of the decurling roll 3 to the downstream guide roll 7b. Is removed.

  At this time, by operating the worm wheel device 6 provided on the support shaft 5 to change the phase of the support shaft 5 to the downstream side or the upstream side in the rotation direction of the decal roll 3, the decal levers 8a and 8b are integrated with this. The decurling bar 11 of the decurling member 9 of the decurling device 2 is moved to the downstream side or the upstream side in the rotation direction of the decurling roll 3. By moving the decal bar 11 downstream or upstream in the rotational direction of the decal roll 3, the winding angle of the continuous paper 1 with respect to the peripheral surface of the decal bar 11 is increased or decreased, and the decal bar 11 is wound around the decal bar 11. As the angle approaches 180 degrees, the turning traveling angle thereof decreases, and the decurling bar 11 moves to the upstream side in the rotation direction of the decal roll 3, so that the winding angle decreases, and the turning traveling angle thereof becomes smaller. growing.

  FIG. 8 shows a decal member 9a according to the second embodiment. In this embodiment, the decal bar 11a is fixed to the support plate 10a by welding, bonding, screwing or the like. ing.

  The decurling member 9a in the second embodiment is used in the same manner as in the first embodiment described above. In this case, the continuous paper 1 is slidably contacted with the decurling bar 11a and travels back.

  FIG. 9 shows a third embodiment. In the third embodiment, the second decal member 9a in the second embodiment is overlaid on the decal member 9 of the first embodiment. This is an example in which the decal member 9b having the configuration is used.

  In this case, the support plate 10 a of the second decurling member 9 a that is stacked on the upper side is connected to the support plate 10 of the first decurling member 9 with a long hole, and the decurling bar 11 a is in the rotational direction of the decurling roll 3. The second decal member 9a is fixed to the projecting and retracting direction so that the position of the second decal member 9a is moved to one side or the other, so that the decal bar 11a has the first decal member 11a. Nine decal bars 11 appear and disappear.

  FIG. 9 shows the first decal member 9 and the decurling member 9b in which the decurling bar 11 is immersed from the decurling bar 11a of the second decurling member 9a. In this case, the continuous paper 1 is the first decurling member 9b. After the rolling contact with the decurling bar 11 of the decurling member 9, it is slidably contacted with the second decurling bar 11a and travels back. In this case, the continuous paper 1 is decurled by both the decurling bars 11 and 11a.

  First described above. The decurling members 9 and 9a of the second embodiment are the types of continuous paper 1 to be decurled by attaching and detaching the support plates 10 and 10a to the decurling levers 8a and 8b, for example, high-quality paper and coated paper. It is selectively used according to label paper, thick paper, thin paper, and the like.

  For example, in the case of coated paper, label paper, and thick paper as high-quality paper, the decurling member 9 according to the first embodiment in which the decurling bar 11 rotates so that the surface of the continuous paper 1 is not scratched or peeled off. In the case of thin paper that is difficult to curl, the decurling member 9a of the second embodiment in which the decurling bar 11a does not rotate is used.

  Further, by using the decurling member 9b of the third embodiment, the decurling members 9, 9a of the first and second embodiments can be selectively used according to the type of the continuous paper 1. .

  According to the decal member 9b of the third embodiment, the decal bars 11 and 11a of both the decal members 9 and 9a are placed at the same position, and the continuous paper is brought into contact with both the decal bars 11 and 11a. The curl of the continuous paper 1 can be decurled on both the rotating decurling bar 11 and the non-rotating decurling bar 11a.

  Further, in each of the above embodiments, by moving the decurling portions 9, 9 a, 9 b in the rotation direction of the decurling roll 3 by operating the worm wheel device 6, the winding angle of the continuous paper 1 with respect to the decurling bars 11, 11 a is increased. As a result, the decurling effect is also increased or decreased.

  In each of the above-described embodiments of the present invention, the decurling members 9, 9 a, 9 b are used as means for changing the phase in the circumferential direction of the decurling roll 3, and the support shaft 5 that supports the decurling roll 3. In this example, the decal levers 8a and 8b are coupled to each other and the support shaft 5 is rotated by the worm wheel device 6. However, the decal members 9, 9a and 9b are connected to the front and rear frames 4a and 4a. The decal members 9, 9 a, 9 b may be moved in the circumferential direction of the decal roll 3 by being supported by another support member on the 4 b side.

  Further, the decurling members 9, 9 a, 9 b are not limited to the movement of the decurling bars 11, 11 a in the circumferential direction of the decurling roll 3 as described above. You may make it move to the running direction of the continuous paper 1 more downstream.

  DESCRIPTION OF SYMBOLS 1 ... Continuous paper, 2 ... Decal apparatus, 3 ... Decal roll, 4a, 4b ... Frame, 5 ... Support shaft, 6 ... Worm wheel apparatus, 7a, 7b ... Guide roll, 8a, 8b ... Decal lever, 9, 9a, 9b ... Decal member, 10, 10a ... Support plate, 11, 11a ... Decal bar, 12a, 12b ... Bracket, 13 ... Bearing member, 13 ... Sliding bearing member.

Claims (6)

On the downstream side of the decal roll that is wound around continuous paper that runs continuously and rotates according to the running of this continuous paper,
A decurling member formed by supporting a decurling bar having a circular peripheral surface on the front end of a support plate is in contact with a surface opposite to a surface that contacts the decurling roll of continuous paper wound around the decurling roll. So that
Provided on the downstream side of the decal member is a guide roll that allows the continuous paper that contacts the decal bar of the decal member to travel back from the decal bar,
A decurling device characterized in that the decurling member moves in the running direction of a continuous paper having its decurling bar wound around the decurling roll.   2. A decurling apparatus according to claim 1, wherein the decurling bar of the decurling member is rotatably supported by a support plate.   A slide bearing in which both ends of the decal bar are rotatably supported by brackets fixed to both ends of the support plate, and an intermediate portion of the decal bar and a part of the support plate side in the circumferential direction are fixed to the tip of the support plate 3. The decal device according to claim 2, wherein the decal device is supported by a member so as to be able to slide and rotate.   2. A decurling apparatus according to claim 1, wherein a decurling bar of the decurling member is fixed to a support plate.   The decal member according to claim 2 and the decal member according to claim 3 can be selectively moved, or both decal members can move relative to each other in a direction in which the wrap angle of the continuous paper with respect to the decal roll increases or decreases. The decurling apparatus according to claim 1, wherein the decaling apparatus is used in an overlapping manner.   A support shaft that rotatably supports the decal roll is rotatably supported on the frame, a decal member is coupled to a decal lever fixed to the support shaft, and a rotary drive device that rotates the support shaft is coupled to the support shaft. The decurling apparatus according to claim 1, wherein the decurling apparatus is a decurling apparatus.

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