JP6179256B2 - Folding assist mechanism for folding long sheets - Google Patents

Description

  The present invention is an auxiliary mechanism that enables a folding operation to be smoothly performed in an apparatus that continuously processes a long sheet while folding it. Specifically, in an apparatus for processing a seal or the like while continuously folding and stacking a postal form such as a continuous form or a folded postcard using a long sheet along a folding line in the flow direction, the folding in the flow direction is performed. The present invention relates to a mechanism for smoothing an operation of continuously folding in two or three along a line.

  Conventionally, a postal form such as a continuous form, a folded postcard, and a sealed letter using a long sheet is finished by continuously folding and sealing the long sheet after printing and printing. For example, a sheet folding apparatus disclosed in JP-A-2006-44883 is used for the folding.

  The sheet folding apparatus includes a sheet pressing member that forms a concave line extending in the longitudinal direction by pressing against a continuous sheet from one side, and a support shaft having an axis perpendicular to the feeding direction of the continuous sheet. And a push roller having an inclined convex peripheral edge that is rotatably supported by the shaft and has a large-diameter circle at the center in the thickness direction and a small-diameter circle at both ends in the thickness direction. A bending force is applied to the continuous sheet at the same time as the rotation by the pressing roller. With such a configuration, it is possible to easily and smoothly bend the continuous sheet related to the production of sealed postcards, etc. It is.

  The sheet folding apparatus is referred to as an “angle” or a “folding folding machine”, and is normally used today at the processing site for long sheets. Such a folding apparatus is, for example, the most continuous sheet processing apparatus such as a continuous sheet processing apparatus disclosed in Japanese Patent Laid-Open No. 9-272660 and a continuous sheet crimping and tearing system disclosed in Japanese Patent Laid-Open No. 2002-29183. It is arranged upstream, and is sent out to the downstream process while folding the long sheet.

JP 2006-44883 A Japanese Patent Laid-Open No. 9-272660 JP 2002-29183 A

For example, as shown in FIG. 7, the long sheet S which is arranged at the uppermost stream of the process and is temporarily pulled up by the sheet feeding roller 11 arranged at the upper part of the downstream while being folded by the folding device X is 1 is passed through various downstream processing devices and finished into various products. However, there is no problem if the paper sheets to be folded of the long sheet are folded with substantially the same width. In the case of folding paper pieces having different widths as shown, each paper piece is narrowed down and folded by the paper feed roller 11 shown in FIG. When a piece of paper narrow in width is exposed when it is narrowed between the pair of support rollers 13a and 13b, a strong repulsive force acts on the narrow piece of paper and opens. And will, state of the support rollers 13a, or causing jamming can not pass through between 13b, or the feed roller 11 partially completely unable to Guests I tatami folding each piece of paper, the narrow paper width open Accidents such as being sent to downstream processes occur. The above tendency is generated more when the long sheet is coated and laminated on the film sheet and the elastic force of the coated film sheet is added.

In the present invention, in view of the above problems, when a long sheet folded by a folding device is fed to a paper feeding unit of a downstream processing device, a paper piece having a narrow width is exposed particularly when folded in a different width. there is provided a folding auxiliary mechanism in corresponds capable elongated sheet folding when.

In order to achieve the above object, the folding assist mechanism for folding a long sheet according to the present invention is a long sheet in which a paper piece having a width less than half of the width of another paper piece is exposed by a folding device. Is a folding assist mechanism when the sheet feeding roller feeds it to the downstream processing apparatus while folding the sheet, and is less than half of the long sheet continuously fed while being folded through the pair of support rollers from below the sheet feeding roller. The long sheet is positioned at a position where the opposite surface can pass through the pair of support rollers in a substantially vertical state while a piece of paper of a width is in contact with the surface opposite to the surface exposed by folding. It is characterized by comprising a backup guide that assists in folding.

  The contact portion of the backup guide with the exposed surface of the long sheet may be planar so that they contact each other over a wide area, or may be constituted by a single or a plurality of rotatable rollers. I do not care. When there are many contact parts with a long sheet in a flat shape, etc., the surface may be subjected to a sliding process such as a fluorine process to reduce the resistance of conveyance of the long sheet. In addition, the conveyance resistance may be increased by, for example, forming a plurality of lateral grooves.

For example, the continuous sheet folding includes two-fold and three-fold (Z-fold). However, since the width of the folded paper piece is different from the width of the other paper pieces, the repulsive force between the paper pieces against folding is strong. In the case where the paper pieces tend to open strongly after folding, the occurrence of jamming and other troubles due to the opening of the paper pieces is effectively suppressed between the folding and the support roller that sends the folded long sheet to the downstream process. .

(A) And (B) is the front view and back view of the elongate sheet | seat S used in an Example. (A) is a top view which shows the folded state of the elongate sheet | seat S folded between the folding apparatus X to the support roller 11. FIG. (B) is the II sectional view taken on the line in said (A). In one Example of this invention, it is a principal part schematic diagram at the time of using the plate-shaped backup guide G. FIG. It is a perspective view of the plate-shaped backup guide G in FIG. FIG. 5 is a schematic diagram of a main part of a backup guide G having a configuration different from that of FIG. (A) And (B) is the front view and back view of a postcard completed by this processing process. (C) is the II-II sectional view taken on the line in (A). It is a principal part schematic diagram which shows the paper feed part of the process to which this invention is applied. It is the principal part schematic which expanded and showed the paper supply part of the process to which this invention is applied from FIG. It is a perspective view explaining the principal part schematic of FIG. 8 clearly.

Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings, taking a tri-fold crimped postcard as an example.
As shown in FIG. 1, the long sheet S used in the present embodiment has a first paper piece 1, a second paper piece 2, and a third paper piece 3 connected in the lateral direction via folding perforations 4 and 5. The unit sheets t are connected in the vertical direction via perforations 6 for cutting in the vertical direction. A marginal portion 9 provided with a marginal hole 8 on the outside of the first paper piece 1 and the third paper piece 3 via a cut line 7 (not necessarily displayed but may be replaced by a perforation for cutting). Are connected. The first paper piece 1 has a width approximately half or less than the other two paper pieces. Various information may be displayed on the front and back surfaces of each piece of paper, but in the present embodiment, as shown in FIG. A postal code column is written, and in some cases, the name and address of the recipient are printed on this side.

  The long sheet S configured as described above is folded in a bellows shape with, for example, a perforation 6 for cutting in the vertical direction, and in a block state, as shown in FIG. Placed in. The long sheet S does not necessarily need to be folded and installed in a block state. For example, the long sheet S may be wound in a roll shape and fed out while being sequentially rotated. In this case, the perforation 6 for cutting can be omitted.

  Note that the marginal portion 9 outside the first paper piece 1 is cut off by an inter-stacker or the like (not shown) before being sent to the folding device X. Then, as shown in FIG. 7, the folding device X is pulled up to the paper feeding roller 11 while being folded in a Z-shaped cross section as shown in FIG. It is pulled out and sent out to a downstream pressure postcard processing step (not shown).

  As shown in FIGS. 3, 5, 7, 8 and 9, for example, the sheet feeding roller 11 is provided between the folding device X and the sheet feeding roller 11 while forcibly folding the long sheet S to be folded. A pair of support rollers 13a and 13b is provided (there is also a structure in which the long sheet S in which the pair of guide bars are folded and passed is sandwiched between crab ridges from both sides). Normally, when a piece of paper having substantially the same width is folded into a Z-shaped cross section by the pair of support rollers 13a and 13b, the paper can be efficiently folded. However, as shown in FIGS. Is narrow, the pressing width of the support rollers 13a and 13b is small as indicated by the arrow Y in the figure, and the first paper piece 1 inevitably rises upstream of the support rollers 13a and 13b due to the repulsive force of the paper pieces. It is in.

  The raised first narrow paper piece 1 may be successfully folded and passed between the pair of support rollers 13a and 13b, but each paper piece may be laminated with a resin film or the length of the long sheet S may be reduced. When the paper pieces are large and thick, a strong repulsive force against folding is generated, and when the paper passes between the pair of support rollers 13a and 13b, the first paper piece 1 having a narrow width is generated when the paper is shifted or severe. Tries to pass while standing up, causing jamming between the pair of support rollers 13a and 13b.

In the present invention, in order to prevent such an accident, a backup guide G is provided on the upstream side of the pair of support rollers 13a and 13b as shown in FIG. It said backup guide G is disposed at a position capable of passing through the pair of support rollers 13a, 13 b a pair of support rollers 13a, a third piece of paper 3 on the upstream side of 13b in a substantially vertical state. By doing in this way, the narrow 1st paper piece 1 is pressed in the state folded by the 2nd paper piece 2 side by force, and, thereby, each paper piece does not stress between a pair of support rollers 13a and 13b. You can pass through.

  As shown in FIG. 6, the crimped postcard manufactured by the above procedure has a Z-shaped cross section, and the opposing surfaces of each piece of paper can be separated by known pseudo-adhesive means (or any opposing surfaces) Cannot be peeled off). The recipient of the pressure-bonded postcard can open the pseudo-bonded facing surfaces and visually recognize the information inside.

The backup guide G used in FIG. 3 uses a single plate as shown in FIG. 4, but may be divided into a plurality of pieces in the horizontal direction or the vertical direction (or diagonal direction). I do not care.
Further, the shape of the backup guide G is not limited to a plate shape such as the plate. For example, as shown in FIG. 5, a cylindrical rotating body (not shown, but a plurality of rotating bodies may be arranged) may be replaced with the plate, and a long sheet S passing therethrough may be backed up. I do not care. The rotating body in this case it is possible to avoid the occurrence of excessive back tension to rotate in accordance with the flow direction of the elongated sheet S. If course of the plate, or to reduce the resistance of the long sheet S in contact by applying a release treatment of the fluorine treatment etc. to the plate surface, or if the resistance increase and then to order or a reversed slip is too good The above process (such as forming a plurality of lateral grooves on the plate to increase friction) may be performed.
Further, both the rotating body and the plate may be used in combination.

S Long sheet G Backup guide t Unit sheet X Folding device 1, 2, 3 Paper piece 4, 5 Perforation for folding 6, 7 Perforation for cutting 8 Marginal hole 9 Marginal portion 11 Paper feed roller 12 Pin tractor 13a 13b A pair of support rollers

Claims (4)

The folding assisting mechanism when the folding device feeds a long sheet on which a paper piece having a width less than half the width of the other paper piece after folding is fed to a downstream processing device by a paper feeding roller while folding the long sheet. While the paper piece having a width of half or less of the long sheet continuously fed while being folded through the pair of support rollers from below the paper roller is in contact with the surface opposite to the surface exposed by folding , the above-mentioned Folding assistance in folding a long sheet , comprising a backup guide for assisting folding of the long sheet at a position where the opposite surface can pass through the pair of support rollers in a substantially vertical state mechanism.   2. The folding assist mechanism for folding a long sheet according to claim 1, wherein the backup guide is plate-shaped.   The folding back assisting mechanism for folding a long sheet according to claim 1, wherein the backup guide is a rotating body.   2. The folding assist mechanism for folding a long sheet according to claim 1, wherein the backup guide is a combination of a plate and a rotating body.

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