JP2004035172A - Roller used in process for removing exterior paper sheet of roll paper sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller for preventing a trace of a wrinkle on a main paper sheet of a roll paper sheet by preventing generation of the wrinkle on an exterior paper sheet in surface-contact with the roller and the roll paper sheet with the exterior paper sheet wound around even when a slack is generated in front of the roller on a rotational entering side or between two parallel rollers for supporting the roll paper sheet with the exterior paper sheet wound around in a process for removing the exterior paper sheet of the roll paper sheet. <P>SOLUTION: The roll paper sheet R with the exterior paper sheet W wound around is placed on the two parallel rollers 1, 1. After the exterior paper sheet on an outermost surface is cut, the roll paper sheet with the exterior paper sheet wound around is rotated by rotation of the two parallel rollers to remove the exterior paper sheet. The roller 1 is provided with a plurality of approximately circular friction members 2 mounted on an outer peripheral surface by spacing apart from each other, and thus an escape route of air is formed by the friction members 2 when the rollers 1 and the roll paper sheet with the exterior paper sheet W wound around are in surface-contact, and generation of the wrinkle is prevented. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is directed to a process of removing an exterior paper wound on an outer surface of a roll paper in which newsprint, magazine paper, or the like is wound in a roll shape around a core, and removing the exterior paper from the roll paper on which the exterior paper is wound. A roller used in an exterior paper removing step of removing the exterior paper while placing the roll paper on which the exterior paper is wound on two parallel rollers and rotating the paper in a direction opposite to the winding direction of the exterior paper About.
[0002]
[Prior art]
Newsprint paper, magazine paper, etc. are delivered as roll paper wound around a core, for example, to a newspaper company, a printing factory, etc. At this time, in order to protect the roll paper, an exterior paper (wamp) is rolled. It is delivered in a state of being wrapped and wound around the outer surface of the paper for 2-3 turns. In this case, the exterior paper is wound in the same direction as the winding direction of the roll paper. The roll paper on which the exterior paper is wound is sent to the next step after the exterior paper is removed in the exterior paper removal step, and is then set on a rotary press.
[0003]
There are various types of exterior paper removal devices in the exterior paper removal process of roll paper wound with exterior paper. In addition, although illustration is omitted about this prior art thing, the same code | symbol is attached | subjected suitably about the member common to the prior art thing mentioned later and it demonstrates below. As a simple process of removing the exterior paper of the roll paper R, the roll paper R on which the exterior paper W is wound is placed on two parallel rollers (12, 12), and the exterior paper W on the outermost surface is removed. After cutting by an operator or by an automatic cutting machine, the operator rotates the roll paper R in the direction opposite to the direction in which the outer paper W is wound by rotating the two parallel rollers (12, 12). A roll paper exterior paper removing step (hereinafter referred to as the former) for taking off and removing the paper W is known.
[0004]
Various types of exterior paper processing apparatuses having an exterior paper removal step have also been proposed. One example (Japanese Patent Application Laid-Open No. 2001-206327) is shown in FIG. The exterior paper processing device 10 includes an exterior paper removal device 11 and an exterior paper roll-in processing device 20 that perform an exterior paper removal process (hereinafter, referred to as the latter). An ascending and descending roll paper support means 13 composed of two parallel rollers 12, 12 on which the roll paper R wound on the outer surface is placed, and an exterior paper cutting means (not shown) for cutting the exterior paper W of the roll paper R ). In FIG. 2, reference numeral 14 denotes a slat conveyor for placing and transporting the roll paper R on which the exterior paper W is wound, 15 a motor, 16 a belt, 17 a pulley, 18 a belt or a chain, The slat conveyor 14 is disposed between two parallel rollers 12, 12, as shown in FIGS.
[0005]
The exterior paper wrapping processing device 20 includes a conveyor means 21 for pulling the exterior paper W from the roll paper R, an exterior paper winding sending means 22 for spirally winding the exterior paper W, and crushing the spiral exterior paper to discharge it outside the machine. And a conveyer means 23 for carrying out the pressing. In FIG. 2, reference numeral 21a denotes a lower belt conveyor, 21b denotes an upper carry-in belt conveyor, 22a denotes a front curved guide plate, 22b denotes a rear curved guide plate, and 22c denotes a pivot shaft of the front curved guide plate 22a.
[0006]
In the external paper wrapping apparatus 20, the roll paper R on which the external paper W is wound is first placed on the slat conveyor 14, conveyed over two parallel rollers 12, 12, and stopped there. The support means 13 rises and supports the roll paper R on which the exterior paper W is wound on the two parallel rollers 12 and 12. Here, the outer paper W on the outermost surface of the roll paper R is cut, and the two parallel rollers 12 and 12 are rotated to keep the roll paper R until the cut portion of the outer paper W comes to the air jet nozzle N. Turn clockwise to stop. Next, when the roll paper R is rotated counterclockwise while injecting air from the air injection nozzle N, the end of the exterior paper W is taken up by the conveyor 21 and sent to the exterior paper winding and sending means 22 to be formed in a spiral shape. The spirally-wrapped outer paper W is crushed by the squeeze-out conveyor means 23 and discharged out of the machine.
[0007]
[Problems to be solved by the invention]
In the former roll paper exterior paper removing step, when removing the exterior paper W from the roll paper R on which the exterior paper W is wound, the roll paper wound with the exterior paper is placed on two parallel rollers. Then, after cutting the outermost surface of the exterior paper, the worker rotates the roll paper in the direction opposite to the winding direction of the exterior paper (2 to 3 rotations) by rotating two parallel rollers, and the worker removes the exterior paper. Removed. In this case, since the roll paper R has a large mass (about 1 ton), the roll paper R on which the exterior paper W is wound and the roller 12 are slightly in surface contact. Here, since the roll paper R is rotated in a direction in which the exterior paper W is loosened, a slack T occurs between the two parallel rollers 12 and 12 and in front of the rotation entrance side roller 12 as shown in FIG. . In this case, the rollers 12, 12 may not always be completely parallel, so that the roll paper moves along the axis of the roll paper. Therefore, when the roll paper R is rotated while the slack T is generated, the roll paper R on which the exterior paper W is wound comes into surface contact with the smooth-surfaced roller 12 having no irregularities. As a result, a wrinkle parallel to the axis of the roll paper (horizontal wrinkle) or a wrinkle perpendicular to the axis (vertical wrinkle) is generated on the exterior paper W. When pressed by its own weight, there is a problem that traces of wrinkles are left on the actual roll paper, which causes trouble in the next process.
[0008]
Further, in the latter case of removing the exterior paper of the roll paper, when removing the exterior paper, the roll paper R on which the exterior paper W is wound is placed on two parallel rollers 12 and 12 and the outermost surface of the outermost surface is removed. After the outer paper is cut, the roll paper R is rotated clockwise by the rotation of the two parallel rollers 12, 12, and after being stopped, the roll paper R is rotated counterclockwise in a direction opposite to the winding direction of the outer paper W, and the outer paper is rotated. Has been sent out. As a result, similarly to the above-mentioned prior art (the former), slack occurs in the exterior paper between the two parallel rollers and before the roller on the rotation approach side, and the two rollers may not always be completely parallel. When the roll paper R is rotated and comes into surface contact with the roller 12 while the sag T is generated, there is no air escape at the surface contact portion between the roll paper on which the exterior paper is wound and the roller. Horizontal wrinkles or vertical wrinkles occur. The wrinkles of the exterior paper leave traces of wrinkles on the roll paper, causing a problem in the next process.
[0009]
As described above, in order to suppress the generation of wrinkles due to the absence of an escape space for air, bandage-shaped tape is spirally wound between the outer covering papers to form irregularities, and the air that causes wrinkles is released. However, it is considered that the unevenness in the spiral direction does not allow air to escape properly when the roll paper is rotated in the normal or reverse direction, so that it is impossible to prevent wrinkles from being generated in the exterior paper.
[0010]
In view of the above, the present invention solves the above-described problems of the prior art, and, in a roll paper outer paper removing step, between two parallel rollers supporting the roll paper around which the outer paper is wound and a rotary entrance side roller. Even if sagging occurs in front of the roll paper, by creating an air escape path when the roller and the roll paper on which the outer paper is wound come into surface contact, wrinkles are prevented from forming on the outer paper, and It is an object of the present invention to provide a roller that can be used in a roll paper exterior paper removing step that can keep traces.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides, as a first solution to the above-mentioned problem, a method in which a roll paper having an outer paper wound on its outer surface is placed on two parallel rollers, and The rollers used in the roll paper outer paper removal process, which removes the outer paper while rotating the roll paper on which the outer paper is wound by the rotation of the two rollers, have a plurality of substantially circular friction members on the outer peripheral surface of each other. It is configured such that rollers are attached at intervals (claim 1). As a second solution to the above-mentioned problem, a roller used in the step of removing the outer paper of the roll paper is formed of a single sheet having a plurality of substantially circular friction members formed on the outer peripheral surface thereof at intervals. A roller around which the object is wound (claim 2). Further, as a third solution to the above problem, the roller used in the step of removing the exterior paper of the roll paper is a roller having a knurled outer peripheral surface. ).
[0012]
[Action]
When the roll paper R around which the exterior paper W placed on the two parallel rollers 1 and 1 is wound is rotated, the slack T is set between the two parallel rollers 1 and 1 and in front of the rotation entrance side roller 1. Occurs. However, even if the roll paper R is rotated in a state where the slack has occurred, the roll paper R on which the outer paper W is wound and the roller 1 come into surface contact and the outer paper W is pressed, According to the present invention, the substantially circular friction members 2 are attached to the outer peripheral surface of the roller 1 with a space therebetween, so that a large number of air escape paths are formed, and the air escapes in all directions, and The paper W does not wrinkle. As a result, it is possible to prevent a trace due to wrinkles from occurring on the main roll paper. According to the second solving means, since a single sheet-like material in which a plurality of substantially circular friction members are formed at an interval from each other is wound around the outer peripheral surface of the roller, According to the third aspect of the present invention, since the outer peripheral surface of the roller used in the roll paper outer paper removing step is subjected to knurling, a large number of air escape paths are formed, and air is released in all directions. No wrinkles are generated on the exterior paper W. As a result, it is possible to prevent a trace due to wrinkles from occurring on the main roll paper.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a perspective view of a roller 1 used when removing the exterior paper from the roll paper R on which the exterior paper W is wound.
[0014]
The roller 1 has a plurality of substantially circular friction members 2 attached to the outer peripheral surface of a metal roller at intervals. The friction member 2 is a member made of nitrile rubber and has, for example, a substantially circular shape having a diameter of about 35 mm and a thickness of about 2 mm.
[0015]
When removing the exterior paper W in the exterior paper removal step of the roll paper, the roll paper R having the exterior paper wound on the outer surface is not shown in the drawing, but as in the prior art, two parallel rollers are used. After the outer paper W on the outermost surface is cut on the outer paper W, the roll paper R is rotated in the same direction by rotating the two parallel rollers 1, 1 in the opposite direction to the winding direction of the outer paper W. While rotating in the direction, the exterior paper W is taken off and removed.
[0016]
In this case, the roll paper R around which the exterior paper W placed on the two parallel rollers 1 and 1 is wound is rotated in a direction in which the exterior paper W is loosened. In addition, the slack T occurs before the rotation entry side roller 1. However, even if the roll paper R is rotated in a state in which the slack is generated, and the roll paper R on which the exterior paper W is wound is in surface contact with the roller 1 and the exterior paper W is pressed, the outer peripheral surface of the roller 1 is Since the substantially circular friction members 2 are attached to each other with a space therebetween and a large number of air escape paths are formed, air is released in all directions and wrinkles do not occur in the exterior paper W. . As a result, it is possible to prevent a trace due to wrinkles from occurring on the main roll paper. Further, when this roller 1 is used, even when the roll paper R around which the outer paper W is wound is rotated forward and reverse as in the latter related art, it is possible to prevent the outer paper W from being wrinkled. .
[0017]
As a modified example (not shown) of the embodiment of the present invention, instead of attaching a substantially circular friction member to the outer peripheral surface of the roller, a substantially circular convex portion, that is, a friction member is provided on the rubber sheet surface with an interval therebetween. The rubber sheet may be formed separately, and this one rubber sheet may be wound around the outer peripheral surface of the roller and attached. Further, as another modified example (not shown), the outer peripheral surface of the roller may be knurled. In this case, the knurl processing may be processing by knurling such as cross-curved processing other than diagonally crossed straight processing. In short, a pattern is formed such that air can escape in all directions by the grooves formed by the knurl processing. Any knurling process may be used.
[0018]
Although the embodiment has been described above, the substantially circular friction member attached to the outer peripheral surface of the roller may be made of natural rubber or the like in addition to nitrile rubber, and may be made of a soft material that does not leave an impression on the roll paper. preferable. The size may be a substantially circular shape having a diameter of about 30 mm and a thickness of about 2.5 mm. Also, the bonding pitch may be widened, but care must be taken because when the surface pressure receiving the load increases, the vibration during rotation increases. For example, wrinkles are less likely to occur when the sticking pitch is 40 mm and the sticking positions are not arranged side by side but arranged alternately. Further, the shape is not limited to a circular shape, but may be an elliptical shape, a rectangular shape having no corners, or the like.
[0019]
【The invention's effect】
As described above, the present invention according to claim 1 is characterized in that two parallel rollers for placing roll paper on which outer paper is wound on the outer surface have a plurality of substantially circular friction members on the outer peripheral surface. When the outer paper is removed from the roll paper, the roll paper with the outer paper wound is placed on two parallel rollers, and the outer paper is loosened. When the roll paper is rotated, slack occurs in the outer paper between the two parallel rollers and in front of the rotation entry side roller. When the paper W is pressed, a large number of air escape paths are formed by a plurality of substantially circular friction members attached to the outer peripheral surface of the roller at a distance from each other, so that air escapes in all directions. As a result, wrinkles occur on the exterior paper W. It is possible to prevent the. Accordingly, it is possible to prevent traces of wrinkles from remaining on the roll paper.
[0020]
According to a second aspect of the present invention, the roller used in the step of removing the outer paper of the roll paper is a single sheet in which a plurality of substantially circular friction members are formed on an outer peripheral surface of the roller at intervals. Is a roller around which the sheet-like material is wound, and a roller whose outer peripheral surface is subjected to knurling, so that a plurality of substantially the same as the effect of the invention according to claim 1 is provided. By having a large number of air escape paths formed by a circular friction member, or by having a large number of air escape paths formed by a large number of irregularities formed by knurling, air is released in all directions. As a result, it is possible to prevent the exterior paper W from being wrinkled. Accordingly, it is possible to prevent traces of wrinkles from remaining on the roll paper.
[Brief description of the drawings]
FIG. 1 is a perspective view of a roller according to an embodiment of the present invention.
FIG. 2 is a side view of a conventional exterior paper processing apparatus.
FIG. 3 is a perspective view of the vicinity of a roll paper bearing.
FIG. 4 is an explanatory diagram of a state where roll paper is placed on two parallel rollers.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roller 2 Friction member 10 Exterior paper processing device 11 Exterior paper removal device 12 Roller 13 Roll paper bearing means 14 Slat conveyor 15 Motor 16 Belt 17 Pulley 18 Belt or chain 20 Exterior paper wrapping processing apparatus 21 Conveyor means 21a Lower belt conveyor 21b Upper carry-in belt conveyor 22 Outer paper winding and sending means 22a Front curved guide plate 22b Back curved guide plate 22c Pivot shaft 23 Nipping pressure conveyor means N Air jet nozzle R Roll paper W Exterior paper

Claims (3)

The roll paper having the outer paper wound thereon is placed on two parallel rollers, and the outer paper is removed while rotating the roll paper with the outer paper wound by the rotation of the two rollers. A roller used in an exterior paper removing step,
A roller used in a roll paper exterior paper removing step, wherein a plurality of substantially circular friction members are attached to an outer peripheral surface of the roller at intervals. The roll paper having the outer paper wound thereon is placed on two parallel rollers, and the outer paper is removed while rotating the roll paper with the outer paper wound by the rotation of the two rollers. A roller used in an exterior paper removing step,
In the roll paper exterior paper removing step, the roller is wound around a sheet-like material formed by a plurality of substantially circular friction members spaced apart from each other on an outer peripheral surface thereof. Rollers used. The roll paper having the outer paper wound thereon is placed on two parallel rollers, and the outer paper is removed while rotating the roll paper with the outer paper wound by the rotation of the two rollers. A roller used in an exterior paper removing step,
A roller used in a roll paper exterior paper removing step, wherein the outer periphery of the roller is subjected to knurling.

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