JP2009208937A - Decurler device and continuous paper processing device using decurler device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decurler device capable of coping with a curled continuous paper whichever of a top surface or a rear surface without changing a paper surface path, and performing a decurling action without changing a length of a paper passage in the device. <P>SOLUTION: Decurler bars 14a, 14b are provided on both sides of a paper passage nipped between decurl rollers 10a and 10b spaced apart in a paper passage direction of a continuous paper 4, and a decurler part 11 is provided so that both of the decurler bars are made movable in a direction orthogonal to the paper passage. A passage length adjusting part 13 for adjusting the passage length of the continuous paper changing between both of the decurl rollers in an offset direction by pressing the decurler bars at the decurler part is provided on either an upstream side of the decurl roller positioned on an upstream side of the paper passage or a downstream side of the decurl roller positioned on a downstream side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a decurler device that removes curl deformed in the width direction of continuous paper fed from roll paper, and a continuous paper processing apparatus using the decurler device.

  The continuous paper fed from the roll paper has the curl due to the roll paper curl. 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, it is printed in the printing unit according to the running of this, and then processed into perforations, file punch holes, etc. in the processing unit and then cut into sheets with a cutting device In the continuous paper processing apparatus configured to do this, a decurler device for removing the curl is provided in the continuous paper traveling path.

  This type of conventional decurler device is configured to press the decurler bar from one side of the continuous paper. This decurler device is provided immediately after the paper feed unit that feeds continuous paper from the roll paper of the continuous paper processing device (see, for example, Patent Document 1, paragraph (0026), FIG. 1).

Japanese Patent Application Laid-Open No. 2003-275995

  In the conventional decurler device described above, since the decurler bar is pressed from one side of the continuous paper, immediately after feeding from the roll paper having the curl only on one side, this decurler device also If it is uncertain which side the curl will touch, check the curl state of the continuous paper, pass the continuous paper through the upper or lower side of the decurler rubber, and press the decurler rubber in the pressing direction. I had to change the settings, and it was troublesome.

  Also, in this conventional decurler device, the paper path length of the continuous paper of this portion changes depending on the pressing movement amount of the decurler bar, and this decurler device is placed between the printing unit and the processing unit of the continuous paper processing device, Or, if it is provided in the processing section, there is a problem that the registration in the apparatus is shifted.

  For this reason, in the continuous paper processing apparatus using the conventional decurler device, as described above, it is provided immediately after the paper feed unit that does not affect the processing of the continuous paper even if the paper passage path length changes. Thus, in the continuous paper processing apparatus using the conventional decurler device, curling due to roll paper curl in the paper feeding unit can be removed immediately after the paper feeding unit, but the curl generated in the subsequent printing unit and processing unit can be removed. Could not cope.

  Further, as described above, since the decurler device is provided immediately after the paper feeding unit, the decurler device is inevitably located far upstream from the cutting device. There is a problem that the curl removal result flows unconfirmed by the amount existing in the sheet passing path from the paper feeding unit to the cutting device until it can be confirmed by the sheet cut by the cutting device. .

  The present invention has been made in view of the above, and a first object of the present invention is to change the continuous paper curled on either the front surface or the back surface without changing the paper passage route. The change in the path length of the continuous paper that occurs when the decurler rubber is pressed against the continuous paper for decurling can be adjusted in the apparatus, and the path length of the apparatus may change. The present invention provides a decurler device that can operate without decurling.

  The second object of the present invention is to provide the decurler device described above between the printing unit and the cutting device, so that the decurling state by the decurling device can be confirmed immediately before the cutting device, An object of the present invention is to provide a continuous paper processing apparatus capable of reducing the number of sheets.

  In order to achieve the first object, a decurler device according to the present invention as set forth in claim 1 is provided on both sides of a paper passing path between decurling rollers spaced apart in the paper passing path direction of continuous paper. And a decurler portion that is movable in the direction orthogonal to the paper passage path, and is located upstream or downstream of the decurling roller located upstream of the paper passage path. A path length adjustment unit is provided on either one of the downstream sides of the decurling roller to adjust the path length of the continuous paper that changes between the two decurling rollers by pressing the decurling rubber in the decurling unit. Yes.

  According to a second aspect of the present invention, there is provided a continuous paper processing apparatus for printing a continuous paper fed from a roll paper by a printing unit and then cutting the continuous paper into a sheet by a cutting device. The decurler device according to claim 1 is arranged between the printing unit and the cutting device.

  According to the decurler device of the first aspect, there are decurler bars on both sides of the paper passage path of the continuous paper in the decurler section, so that the decurler section is directed to one or the other in the direction perpendicular to the paper passage path. It is possible to move and push one of the decurler rubbers to one side of the continuous paper, even if it is continuous paper curled on either the front or back side without changing the paper path It can correspond to one side.

  Further, the path length of the continuous paper that has changed in the decurler section on one side of the paper path of the decurler section can be canceled by the path length adjustment section, so that the decurler operation can be changed to the continuous paper path length in the decurler device. It can be done without change.

  Therefore, when this decurler device is arranged between the printing unit and the processing unit of the continuous paper processing device, the paper path length between the printing unit and the processing unit (cutting device) is always predetermined even if the decurler device is operated. The length can be maintained, and the positional relationship between the printed pattern and various processing positions in the processing section can be always maintained at a fixed position.

  Further, according to the continuous paper processing apparatus using the decurler device according to claim 1, the decurler device is disposed between the printing unit and the cutting device, so that the decurling state by the decurler device is reduced. The sheet can be checked immediately before the cutting device, and the number of sheets in the curled state can be reduced, so that the quality of the sheet can be improved and the workability for creating the sheet can be improved. In addition, by arranging the decurler device on the downstream side of the printing unit, even if curl occurs on any side of the continuous paper by the printing unit, the decurler device is used to remove the curl due to the printing. can do.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a continuous paper processing apparatus 1, which is equipped with a decurler device 2 according to the present invention. The continuous paper processing apparatus 1 includes a paper feeding unit 5 that feeds the continuous paper 4 from the roll paper 3, and one or a plurality of printing units 6 a, 6 b, 6 c on the continuous paper 4 fed from the paper feeding unit 5. For example, a paste is applied to a predetermined position on the printing unit 6 that performs predetermined printing, and then the continuous paper 4 by, for example, a glue applicator 7a, and a vertical perforation or a horizontal perforation is processed by the perforation processing machine 7b. In addition, it comprises a processing unit 7 for cutting into sheets with a cutting device 7c. A discharge device 8 stacks and discharges the cut sheets.

  The decurler device 2 is disposed between the printing unit 6 of the continuous paper processing device 1 and the cutting device 7c of the processing unit 7. In this embodiment, for example, the decurler device 2 is arranged between the glue applying device 7a and the perforation processing machine 7b of the processing unit 7, but this is the decurler device 2 in the upstream portion of the cutting device 7c. May be provided.

  The decurler device 2 is configured as shown in FIG. 2, and an upstream side and a downstream side that are arranged in the direction of the paper passing path L so as to face each other with the continuous paper 4 sandwiched between a pair of rollers 9a and 9b that are in rolling contact with each other. Side decurling rollers 10a, 10b, a decurling unit 11 disposed between the decurling rollers 10a, 10b so as to be movable in the vertical direction, and a receiving roller 12 provided downstream of the decurling roller 10b on the downstream side. A path length adjusting unit 13 is provided between the decurling roller 10b on the downstream side and the receiving roller 12, and adjusts the path length of the continuous paper 4 between the rollers 10b and 12. The path length adjusting unit 13 may be disposed on the upstream side of the upstream decurling roller 10 a together with the receiving roller 12.

  The decurler portion 11 includes an upper decurler member 11a having an upper decurler bar 14a, and a lower decurler member 11b having a lower decurler bar 14b. Are disposed so as to be opposed to each other in the vertical direction with the position shifted in the direction of the paper passage path L of the continuous paper 4, and both ends thereof are provided at both ends in the width direction of the continuous paper 4 (hereinafter simply referred to as the width direction). The connecting plates 15a and 15b are rotatably supported.

  Since the decurler members 11a and 11b are point-symmetrical in the vertical direction and have the same configuration, one (lower side) will be described with reference to FIGS.

  Both ends of the decurler rubber 14b are rotatably supported by connecting plates 15a and 15b on both sides in the width direction. Then, the receiving roller 16 receives the opposite side (lower side) of the paper passing path L side at a plurality of positions in the middle portion of the decurler rubber 14b. Reference numeral 17 denotes a plurality of brackets for supporting the receiving rollers 16, and each bracket 17 is fixed to a base plate 18 fixed to the connecting plates 15a and 15b. Two brackets 19a and 19b are penetrated and supported by each bracket 17 so as to be separated from each other in the direction of the paper passage path L. On both sides of each bracket 17, the above-described receiving roller 16 is supported by different spindles 19a and 19b. The receiving rollers 16 are supported in a staggered manner in the axial direction by shifting the phase in the direction perpendicular to the axis on the opposite side of the paper path L of the decurler rubber 14b.

  A collar may be arranged between the receiving rollers 16 on the support shafts 19a and 19b so that the receiving rollers 16 arranged along the brackets 17 do not move in the axial direction.

  The decurler rubbers 14a and 14b are sufficiently small in diameter so as to roll onto the continuous paper 4 and remove the curl thereof. Further, ball bearings are used for the support portions of the decurler rubbers 14a and 14b and the receiving roller 16, and these are rotated with an extremely light force.

  Nut members 20 and 20 are fixed to the outer sides of the connecting plates 15a and 15b on both sides in the width direction. The nut members 20 and 20 are frames 21 on both sides in the width direction of the processing section 7 of the continuous paper processing apparatus 1. , 21 are respectively screwed into screw shafts 22, 22 provided in the vertical direction. The screw shafts 22 and 22 are configured to rotate forward and reverse in synchronization by motors 24 and 24 via bevel gear mechanisms 23 and 23. For example, when the screw shafts 22 and 22 rotate forward. When the decurler unit 11 moves down and reverses, it moves up.

  The path length adjusting unit 13 includes an adjusting roller 13a that is in rolling contact with one side of the continuous paper 4. The adjusting roller 13a is movable in a direction in which the continuous paper 4 is pressed. The path length of the continuous paper 4 between the decurling roller 10b and the receiving roller 12 can be changed.

  The path length adjusting unit 13 is configured as shown in FIG. 4, and both ends of the adjusting roller 13a are screw shafts 25 provided on the inner sides of the frames 21 and 21 on both sides in the width direction in the vertical direction. By rotating the screw shafts 25 and 25 in synchronization with motors 28 and 28 via bevel gear mechanisms 27 and 27, the nut members 26 and 26 screwed to 25 are rotatably supported. The adjusting roller 13a is moved vertically in the direction perpendicular to the paper path L.

  The decurler unit 11 and the path length adjusting unit 13 operate in conjunction with each other, and the adjusting roller 13a is in a direction in which the path length adjusting unit 13 cancels the change in the path length of the continuous paper 4 in the decurler unit 11. Therefore, the path length of the continuous paper 4 as the decurler device 2 does not change.

  The screw shafts 22 and 22 on both sides in the width direction of the decurler unit 11 connect the bevel gears on the input side of the bevel gears 23 and 23 provided at the base ends of the screw shafts 22 and 22 with one shaft. The screw shafts 22 and 22 may be driven and controlled by rotating the shaft by a single motor 24. The same applies to the path length adjustment unit 13, and the drive shafts 25, 25 may be driven and controlled by a single motor 28.

  In the above configuration, the decurler members 11a and 11b in the decurler unit 11 have been shown in an example in which the decurler bars 14a and 14b are displaced in the paper path direction. The members 11a and 11b may be arranged at the same position in the paper path direction.

  In the above configuration, the decurler portion 11 in the non-decurl state (neutral state) is as shown in FIG. 2, and the top portions of the decurler rubbers 14a and 14b of both decurler members 11a and 11b connect the decurler rollers 10a and 10b. It is at a position in contact with the path L. Then, the path length adjusting unit 13 at this time moves the adjusting roller 13a to form a loop between the decurling roller 10b and the receiving roller 12, and the path length of the continuous paper 4 between the rollers 10b and 12 is determined. Is longer than the length between the rollers. The surplus length longer than the length between rollers of the path length adjusting unit 13 in the non-decurler state is a length sufficient to cancel out the surplus length that becomes longer in this portion when the decurler is operated in the decurler unit 11.

  When one side, for example, the upper surface side of the continuous paper 4 is curled convexly in the width direction, the decurler unit 11 is moved downward as shown by the solid line in FIG. 14a is rolled to the upper side of the continuous paper 4. As a result, the upper side surface of the continuous paper 4 is squeezed by the decurler bar 14a of the upper decurler member 11a, and the curl on the upper side surface is removed so that the continuous paper 4 becomes flat.

  At this time, the path length of the continuous paper 4 between the decurling rollers 10a and 10b in the decurling unit 11 is increased by the loop amount due to the movement of the decurling rubber 14a. On the other hand, the adjusting roller 13a of the path length adjusting unit 13 at this time moves from the initial state shown in FIG. 2 in the direction of loosening the loop, and the path length of the continuous paper 4 between the rollers 10b and 12 is increased in the decurler unit 11. Try to be shorter as much as possible. Thereby, the change in the length of the continuous paper 4 in the decurler unit 11 is adjusted in a direction to be canceled by the path length adjusting unit 13, and the length of the continuous paper 4 in the decurler device 2 does not change.

  When the other side surface of the continuous paper 4, for example, the lower surface side is curled convexly in the width direction, the decurler unit 11 is moved upward as shown by a chain line in FIG. The decurler rubber 14 b is rolled to the lower surface of the continuous paper 4. As a result, the lower surface of the continuous paper 4 is squeezed by the decurler bar 14b of the lower decurler member 11b, and the curl on the lower surface is removed.

  At this time, the path length of the continuous paper 4 in the decurler device 2 is not changed by the operation of the adjusting roller 13a as in the case of the upper surface of the continuous paper 4.

  The operation of the decurler unit 11 and the operation of the path length adjusting unit 13 are performed in conjunction with each other as described above. This operation detects a change in the path length in the decurler unit 11 as a vertical movement of the decurler unit 11. Depending on the detected amount, the control device operates the path length adjusting unit 13 in a direction in which the change in path length in the decurler unit 11 is offset.

  Even when the decurler unit 11 of the decurler device 2 is operated in this way, the path length of the continuous paper 4 between the printing unit 6 and the cutting device 7c of the processing unit 7 does not change and is always held at a fixed position. The positional relationship with various processing positions in the processing unit is always held at a fixed position. In addition, the curl removal result by the decurler device 2 is also cut by the cutting device 7c immediately after the processing by the decurler device 2, so the confirmation of the curl removal state by the decurler device 2 is the cutting work by the cutting device 7c. It can be done simultaneously.

It is a front view which shows the continuous paper processing apparatus provided with the decurler apparatus. It is a block diagram schematically showing a decurler device. It is operation | movement explanatory drawing which shows a decurler apparatus schematically. It is a development explanatory view showing the composition of a decurler device. It is an AA cross-sectional arrow view of FIG. It is a BB cross-sectional arrow view of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Continuous paper processing apparatus, 2 ... Decurler apparatus, 3 ... Roll paper, 4 ... Continuous paper, 5 ... Paper feed part, 6 ... Printing part, 6a, 6b, 6c ... Printing unit, 7 ... Processing part, 7a ... Glue coating Cloth machine, 7b ... perforation machine, 7c ... cutting device, 8 ... discharge device, 9a, 9b ... roller, 10a, 10b ... decal roller, 11 ... decurler part, 11a, 11b ... upper and lower decurler members, DESCRIPTION OF SYMBOLS 13 ... Path length adjustment part, 13a ... Adjustment roller, 14a, 14b ... Upper / lower decurler rubber, 15a, 15b ... Mounting plate, 16 ... Receiving roller, 17 ... Bracket, 18 ... Base plate, 19a, 19b ... Support shaft, 20, 26 ... nut members, 21 ... frame, 22, 25 ... screw shaft, 23, 27 ... bevel gear mechanism, 24, 28 ... motor.

Claims (2)

Between the decal rollers that are separated in the paper path direction of continuous paper,
There is a decurler on both sides of the paper path, and a decurler is provided that allows both decurlers to move in a direction perpendicular to the paper path.
On either the upstream side of the decurling roller located on the upstream side of the paper path or the downstream side of the decurling roller located on the downstream side,
A decurler device comprising: a path length adjusting section that adjusts a path length of continuous paper that changes between both decurling rollers by pressing a decurler rubber in the decurler section. In a continuous paper processing device that prints continuous paper fed from roll paper in a printing unit, and then cuts it into sheets with a cutting device,
A continuous paper processing device, wherein the decurler device according to claim 1 is disposed between a printing unit and a cutting device.

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