JP5881880B1 - Printing method using folding cylinder device of offset rotary press - Google Patents

Abstract

[PROBLEMS] To prevent wrinkles from occurring when folding only printed broad paper, or when folded with the printed section paper superimposed on the printed broad paper, without requiring a large-scale device. An apparatus and method are provided. Only the printed broad paper is sent to the folding rollers 19 and 19 via the folding blade 171a of the folding cylinder 17 and folded, and the printed section paper is overlapped on the printed broad paper via the folding blade 171a. Wrinkle generation that is configured to selectively perform folding to the folding rollers 19 and 19 to prevent the section paper from being wrinkled when the section paper is fed to the folding roller via the folding blade 171a. The prevention member is detachably provided at a predetermined position near the folding blade protruding position on the outer peripheral surface of the folding cylinder. [Selection] Figure 2

Description

In the present invention, only the printed broad paper is fed to the folding roller via the folding blade of the folding cylinder and folded, and the folded roller is fed via the folding blade in a state where the printed section paper is superimposed on the printed broad paper. a printing method using a folding cylinder equipment of alternatively performing offset rotary press to be folded sent to.

  In a conventionally known offset rotary press for printing on a web, or a digital printing press that has recently begun to be used, one or more webs printed by a printing unit are folded by a folding cylinder device to form a signature. The paper is being discharged at.

  There are various types of folding systems. As an example of this type of folding cylinder device, an offset rotary press folds the web by combining a folding cylinder equipped with a folding blade and a folding roller called a folding roller. The method is generally used extensively.

  The schematic structure of the folding cylinder device will be described below. A web printed by an offset rotary press or a digital printing machine is guided to a folding cylinder device by a drag roller, and parallel to the traveling direction of the web by a triangular former and a pair of forming rollers provided below the former. Folded (vertically folded) into a vertically folded web.

  This vertical fold web is composed of a vertical fold side (bag side) and a vertical folding open end side (peller side), and is inserted into a nipping roller provided at the lower part of the forming roller, between the folding cylinder and the saw cylinder. It is sent.

  The saw cylinder incorporates a saw blade supported by a saw bed, and a longitudinally folded web is formed between the folding cylinder and a saw blade receiver provided on the outer periphery of the folding cylinder by the opposing rotation operation of the saw cylinder. Cut at a constant pitch in the direction of travel.

  In the folding cylinder, a pair of saw blade receivers made of a resilient material such as rubber is used as a member for receiving the saw blade, and the longitudinally folded web is pierced at a position immediately upstream of the cutting position of the longitudinally folded web. A needle for transferring and a folding blade for folding a longitudinally folded web cut by a saw blade at a rotational phase position determined by a folding cylinder are provided.

  Before the saw cylinder cuts the longitudinally folded web, the longitudinally folded web, which is pierced by the needle at a position immediately upstream of the cutting position in the traveling direction and the cut end portion is downstream of the traveling direction, is held by the needle. It is transferred along the outer peripheral surface of the folding cylinder, and the upstream side in the advancing direction is cut to a certain length by the cutting operation of the next saw cylinder to form a cut longitudinally folded web.

  Then, the folding blade protrudes from the outer peripheral surface of the folding cylinder at a position substantially at the center of the cut longitudinally folded web, and the needle holding the downstream side in the traveling direction of the longitudinally folded web simultaneously cut is the folding cylinder. Enter the folding cylinder from the outer peripheral surface. The position of the folding blade is adjusted so that the position corresponding to the center of the vertically folded web that has been cut is inserted between the pair of folding rollers.

  As described above, the cut vertically folded web is inserted between the pair of folding rollers at the center equivalent position to form a folded signature, which is sent to the downstream side via the delivery fan. They are aligned in a state of being wrapped on the conveyor belt at a predetermined pitch, and discharged outside the machine. And it is carried to a back process by the conveying apparatus provided separately from the folding cylinder apparatus.

  In the above-described conventional structure, in the case of a multi-section signature, a thin page (2 to 8 pages) section paper is inserted into a thick page (20 pages or more) broad paper such as a daily newspaper (daily newspaper) in particular ( Regarding signatures (which are so-called section-printed), broad paper, which is the outside section, tends to be preceded by the bag side when entering between a pair of folding rollers along the outer periphery of the folding cylinder. Therefore, the bag side of the section paper, which is the inside section, tends to follow behind the pella side. And, because the bag side is delayed and enters between the pair of folding rollers, and the paper flutters, etc., problems such as wrinkles occur on the side of the section paper, which is the inside section of the thin page, especially on the bag side. To do.

  On the other hand, for example, in order to prevent wrinkling of a thin printing paper at the time of printing, at least the peripheral portion of the surface of the folding cylinder to which the end of the printing paper hits has a satin finish, or the surface friction resistance is small A thin paper printing method is known in which printing is performed by applying a tape-like material to reduce the friction on the surface of the peripheral portion of the folding cylinder where the end of the printing paper hits (Patent Document). 1).

  Furthermore, in order to prevent the above-described problem, for example, a folding blade that can be attached to a folding cylinder device, and the tip portion that is in contact with the object to be folded is the reference length from the folding blade to the tip. A folding blade having both a certain reference tip and a short tip whose length to the tip is shorter than the reference length is known (see Patent Document 2).

Japanese Patent No. 4252960 Japanese Patent No. 5217062

  The folding cylinder apparatus described in Patent Document 1 is characterized in that printing is performed only in an offset rotary press that prints thin paper, and the satin finish portion of the folding cylinder surface is at least a peripheral portion where the end of the printing paper hits The entire surface may be acceptable, but the cost for finishing a part or the entire surface of the folding cylinder surface is increased.

  In addition, if such a technique is temporarily applied to a form in which the broad paper and the section paper printed as described above are overlapped and then folded, when dealing with a case where a problem occurs, the surface processing of the folding cylinder is used. In the worst case, the folding cylinder is completely replaced, and the folding cylinder is manufactured and repaired, which entails enormous costs such as material costs and labor costs. Therefore, it is impossible to apply the technique disclosed in Patent Document 1 to the means for solving the above problem.

  In addition, the folding blade device described in Patent Document 2 is effective when printing only section paper, but during normal broad paper printing and section paper printing, the folding blade can be replaced and the height can be finely adjusted. Or, in the case of a separate folding blade, it is necessary to adjust the height.

  In addition, the technique described in Patent Document 2 is very excellent in that it prevents wrinkling when printing section paper. However, section paper is usually not printed at all times, and is often printed at a time referred to as so-called separate printing between broad printing in which only broad paper is printed.

  In such a situation, if a process delay occurs during separate printing, it takes time to replace the folding blade and finely adjust the height after the section paper has been printed until the normal broad paper is printed. There is a problem that the adjustment work must be performed quickly within a limited work time.

  SUMMARY OF THE INVENTION An object of the present invention is to realize the prevention of wrinkles from occurring on a thin-section section paper that becomes an inside section during a folding operation by a folding cylinder device without requiring a large-scale device.

In order to solve the above-mentioned problem, a printing method using the folding cylinder device of the offset rotary press according to claim 1 of the present invention,
Only the printed thick page broad paper is sent to the folding roller through the folding blade of the folding cylinder and folded, and the printed thin page section paper is overlapped with the printed broad paper through the folding blade. In the printing method using the folding cylinder device of the offset rotary press that selectively sends the folding roller to fold,
A wrinkle generation preventing member that prevents wrinkles from being generated on the section paper when the section paper is fed to the folding roller via the folding blade is placed at a predetermined position near the folding blade protruding position on the outer peripheral surface of the folding cylinder. Ready for removal ,
The wrinkle generation preventing member has a roughened surface in contact with the section paper, and a contact surface with the folding cylinder is an adhesive surface that can be attached to and detached from the folding cylinder, and
A printing method using a folding cylinder device of an offset rotary press provided with a spacer at a predetermined position of the folding blade to reduce a gap generated between the section paper and the folding blade,
When folding only the printed broad paper by the folding cylinder device, the wrinkle prevention member is removed from the folding cylinder, and the printed section paper is superposed on the printed broad paper by the folding cylinder device. When folding, the wrinkle generation preventing member is attached to a predetermined position on the outer periphery of the folding cylinder .

Further, a printing method using the folding cylinder device of the offset rotary press according to claim 2 of the present invention,
Only the printed thick page broad paper is sent to the folding roller through the folding blade of the folding cylinder and folded, and the printed thin page section paper is overlapped with the printed broad paper through the folding blade. In the printing method using the folding cylinder device of the offset rotary press that selectively sends the folding roller to fold,
A wrinkle generation preventing member that prevents wrinkles from being generated on the section paper when the section paper is fed to the folding roller via the folding blade is placed at a predetermined position near the folding blade protruding position on the outer peripheral surface of the folding cylinder. Ready for removal,
The wrinkle generation preventing member includes a brush support that is attachable to and detachable from a recessed portion formed at the predetermined position of the folding cylinder, and a brush planted in a predetermined region of a contact surface of the brush support with the section paper. And
A printing method using a folding cylinder device of an offset rotary press provided with a spacer at a predetermined position of the folding blade to reduce a gap generated between the section paper and the folding blade,
When folding only the printed broad paper by the folding cylinder device, the wrinkle prevention member is removed from the folding cylinder, and the printed section paper is superposed on the printed broad paper by the folding cylinder device. When folding, the wrinkle generation preventing member is attached to a predetermined position on the outer periphery of the folding cylinder .

According to the present invention, it provides a printing method using the folding cylinder equipment capable of creating a signature is not trouble creases thin pages section paper to be inside the section at the time of printing sections paper Offset Press can do.

It is the schematic which shows the one part schematic structure of the folding cylinder apparatus of this invention which produces only the broad paper, or the signature which consists of a broad paper and selection paper, and a prior art. It is the schematic which shows the schematic structure around the folding cylinder apparatus of this invention. It is a partial enlarged front view of a folding cylinder apparatus. It is an enlarged front view (Drawing 4 (a)) and a side view (Drawing 4 (b)) of a cap used for a 1st embodiment of the present invention, and covering a crevice which stores a needle mechanism of a folding cylinder. FIG. 5 is an enlarged front view of a bridge that is attached to a recessed portion opening that accommodates a folding blade of a folding cylinder used in the first embodiment of the present invention, flush with the surface of the folding cylinder and through a gap that allows the folding blade to go in and out. It is (a) and a side view (Drawing 5 (b)). It is a front view of a folding blade. It is explanatory drawing which shows the triangular top attached to a folding blade, The front view (FIG. 7 (a)) and the side view (FIG.7 (b)). It is a front view which shows the state which attached the triangular top to the folding blade attached to the rotating shaft. It is a front view of the cap part and bridge part of the folding cylinder apparatus which concern on the 1st Embodiment of this invention. It is the front view (FIG. 10 (a)) and side view (FIG.10 (b)) of the bridge | bridging used for the 2nd Embodiment of this invention. It is a front view (Drawing 11 (a)) and a side view (Drawing 11 (b)) of a bridge used for a 3rd embodiment of the present invention. It is the front view (FIG. 12 (a)) and side view (FIG.12 (b)) of the brush member which has a function as a wrinkle generation | occurrence | production prevention member attached to the bridge shown in FIG. It is a front view (Drawing 13 (a)) and a side view (Drawing 13 (b)) of an auxiliary bridge attached to a bridge used for a 3rd embodiment instead of the brush member shown in Drawing 11. Enlarged front view (FIG. 14 (a)) and side view (FIG. 14) showing the cap used in the third embodiment of the present invention and covering the recess that houses the needle mechanism of the folding cylinder in a state where no brush is attached. 14 (b)). It is the front view (FIG. 15 (a)) and side view (FIG.15 (b)) of the cap provided with the function as a wrinkle generation | occurrence | production prevention member used for the 3rd Embodiment of this invention. It is explanatory drawing about the signature produced with a folding cylinder apparatus, Comprising: The figure (FIG. 16 (a)) which shows the ideal signature of a section printing paper, The inside section side (at the time of 4 pages) of the broad paper used as an outside section ) (FIG. 16 (b)) showing a wrinkle defect signature generated on the bag side, and a diagram showing a wrinkle failure signature generated on the selection side (at the time of page 2) (FIG. 16 (b)). c)).

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings. First, a general structure of the folding cylinder device that is a premise of each embodiment will be described. FIG. 1 is a cross-sectional view showing a schematic structure of a common portion around the folding cylinder of the present invention and the prior art. FIG. 2 is a schematic diagram showing a schematic structure around the folding cylinder device 1 of the present invention.

  As shown in FIG. 1 and FIG. 2, one page of two pages width or a plurality of superimposed sheets (20 pages to 40 pages) printed by an offset rotary press or a digital printing machine (both not shown here). The continuous paper Wa-0 is guided to the triangular former 12a by the drag roller 11, and the broad paper Wa which is vertically folded to a half width to make a signature width, and one or two or more overlapped sheets (two pages wide) The continuous paper Wb-0 from page 2 to page 8) is guided to the former 12b by the drag roller 11 and overlapped with the side edges of the section paper Wb vertically folded to a half width to coincide with the section paper Wb. The overlapping continuous paper We (hereinafter simply referred to as “continuous paper We”) is created.

  Here, although the drag roller 11, the formers 12a and 12b, and the continuous papers Wa-0 and Wb-0 are drawn as one plane, they are actually provided separately in the vertical direction. . As will be described later, the continuous paper Wa-0 and the continuous paper Wb-0 include a folding cylinder 17 which is a rotating cylinder, and a pair of folding rollers 19 and 19 each having a rotation axis substantially parallel to the axis of the folding cylinder 17. Are folded into the folded broad paper A and selection paper B shown in FIG. 2 and FIG.

  More specifically, when the newspaper signature E is created, the folding cylinder device 1 guides the continuous paper We to the cutting position between the saw cylinder 16 and the folding cylinder 17 and attaches it to the saw cylinder 16 as shown in FIG. The cutting blade 162 is cut into a predetermined cutting dimension at right angles to the traveling direction, and is folded horizontally by the folding cylinder 17. As a result, the broad paper and the section paper have the same horizontal folding line, the broad paper is on the outer side (outside section), and the section paper is on the inner side (inside section), and is folded over as shown in FIG. A newspaper signature E consisting of two sections is created.

  Here, as shown in FIG. 1, in the folding cylinder device 1, the continuous paper Wa-0 is folded by a drag roller 11 by a former 12 a and a pair of forming rollers 13 a and 13 a provided downstream thereof. And is folded in two (vertically folded) at the center in the width direction in parallel with the traveling direction of the continuous paper Wa-0 to form the continuous paper Wa. The continuous paper Wa is sent to the downstream side of the pair of forming rollers 13a and 13a.

  On the other hand, in the folding cylinder device 1, the continuous paper Wb-0 is guided by the drag roller 11 to the folded portion constituted by the former 12b and a pair of forming rollers 13b and 13b provided on the downstream side thereof, and the continuous paper Wb. Parallel to the direction of travel of −0, the paper is folded in half (vertically folded) at the center in the width direction to form continuous paper Wb. The continuous paper Wb is sent to the downstream side of the pair of forming rollers 13b and 13b.

  The continuous paper Wa and the continuous paper Wb fed to the forming rollers 13a, 13b, 13a, and 13b, respectively, are a pair of counter-rotating units provided on the downstream side of the pair of forming rollers 13a, 13b, 13a, and 13b in the folding cylinder device. By being overlaid by the nipping rollers 14, 14, the continuous paper We is formed and fed into the saw cylinder 16 and the folding cylinder 17.

  As shown in FIG. 2, the saw body 16 is provided with saw blades 162 supported by a saw table 161 at two locations in the circumferential direction of the saw body 16. On the other hand, the folding cylinder 17 is provided with saw blade receivers 172 d corresponding to the two saw blades 162. Then, by the opposing rotation operation of the folding cylinder 17 and the saw cylinder 16, the continuous paper We (the overlapping continuous paper Wa and the continuous paper Wb is overlapped between the saw blade 162 and the paper guide 181 provided on the outer peripheral surface of the folding cylinder 17. ) At a constant pitch perpendicular to the direction of travel.

  As shown in FIGS. 2 and 3, the folding cylinder 17 is provided with two needle mechanisms 172 at equal circumferential positions of the folding cylinder 17. In the present embodiment, the needle mechanism 172 includes a needle lever 172b, a needle 172a attached to the tip of the needle lever 172b, and a needle shaft 172c that supports the needle lever 172b. As the needle shaft 172c is reciprocated by a cam mechanism (not shown), the needle lever 172b swings, and with this, the tip of the needle 172a does not interfere with the saw blade receiver 172d of the folding cylinder 17 at the outer peripheral surface. To come in and out.

  Before the saw blade 162 cuts the continuous paper We, the needle 172a pierces the position immediately upstream in the traveling direction of the cutting position (that is, the planned cutting position) on the continuous paper We. When the saw blade 162 cuts the continuous paper We, the needle 172a turns the continuous paper We with the cut end into the downstream end in the direction of the arrow a in FIG. It is transferred along the outer periphery of 17.

  Here, in this embodiment, as shown in FIGS. 2 and 3, the cap 111 shown in FIG. 4 is flush with the folding cylinder surface as long as the needle 172 a does not interfere with the entrance and exit of the needle mechanism 172. It is attached with an attachment screw (not shown) using the attachment hole 111b.

  As shown in the figure, a recess 111a for attaching a saw blade receiver (not shown) of the saw blade 162 is provided on the surface of the cap 111, and a recess 111e is provided on the back surface so as not to interfere with the needle shaft 172c. It has been.

  A folding blade mechanism 171 is disposed and incorporated at a substantially central portion of the position where the two needle mechanisms 172 are disposed. In the present embodiment, since a plurality of needles 172 a are arranged in one folding cylinder 17, two folding blade mechanisms 171, 171 are arranged at equal circumferential positions on the outer circumferential surface of the folding cylinder 17. Arranged and incorporated.

  The bridge 112 shown in FIG. 5 is attached to the built-in recess opening of the folding blade mechanism 171 through a gap 130 so as to be flush with the surface of the folding cylinder. The bridge 112 is attached to the folding blade shaft 171b from the gap 130. The leading end of the folding blade 171 a protrudes from the outer peripheral surface of the folding cylinder 17. As shown in the figure, the bridge 112 has an arc shape that coincides with the outer peripheral surface of the folding cylinder 17, and is attached to the folding cylinder 17 with mounting screws (not shown) using mounting holes 112a provided at both ends thereof. It has been.

  Then, the folding blade mechanism 171 is arranged on a folding blade shaft 171b that rotates in the direction opposite to the arrow a in FIG. 2 (the direction opposite to the direction of rotation of the folding cylinder 17 (arrow a)) at the rotational phase position determined by the folding cylinder 17. The tip of the attached folding blade 171 a protrudes from the outer peripheral surface of the folding cylinder 17 from the gap 130 between the bridges 112.

  As shown in FIG. 6, the folding blade 171a is formed in a comb-like shape so as to pass through the gap 130 between the bridges 112, and a mounting hole 171c attached to the folding blade shaft 171b is provided on one side in the width direction. ing. Further, the folding blade 171a is provided with a mounting hole 171d for attaching the triangular piece 113 as a spacer shown in FIG. 7, and the triangular piece 113 is aligned with the mounting hole 113a of the triangular piece 113. Is attached to the folding blade 171a with a screw 115.

  The triangular top 113 is formed in a taper shape so that the thickness increases from the tip side toward the attachment side (folding blade shaft 171b side) of the folding blade 171a. As shown in FIG. 8, a predetermined shape of the folding blade 171a is formed. Attach to the front and back of the part. As a material of the triangular top 113, any of resin such as nylon (registered trademark) 66 and metal such as aluminum alloy can be used. Further, the folding blade 171a to which the triangular frame 113 is attached is attached to the folding blade shaft 171b shown in FIG. Note that the triangular top 113 embodies one aspect of a spacer that reduces the gap generated between the section paper and the folding blade 171a, and has another shape as long as the same effect is exhibited. It does not matter.

  A pair of folding rollers 19, 19 are disposed in parallel downstream of the folding cylinder 17 with their outer peripheral surfaces facing each other, and are driven to rotate in the direction of arrow c in FIG. The folding blade 171 a is adjusted in position so as to protrude to the center position of the pair of folding rollers 19 and 19.

  The continuous paper We transported along the outer peripheral surface of the folding cylinder 17 by the needle 172a is cut into a certain length at the position of the upstream rear end by the cutting operation of the next saw blade 162, and the stacked paper We− 1 Note that the overlapped paper We-1 has a form in which the continuous paper Wa-1 similarly cut is overlapped with the upper side of the continuous paper Wb-1 cut on the outer periphery of the folding cylinder 17 (see FIG. 2). .

  Further, in the present embodiment, the folding blade 171a protrudes from the outer peripheral surface of the folding cylinder 17 when the overlapped paper We-1 passes through the gap between the folding cylinder 17 and the pair of folding rollers 19, 19, and after cutting. A position (corresponding to the center) that is substantially the center of the overlapped paper We-1 is inserted between the pair of folding rollers 19 and 19.

  In synchronism with the operation in which the folding blade 171 a protrudes from the outer peripheral surface of the folding cylinder 17, the needle 172 a that has pierced the position immediately upstream of the downstream end of the continuous paper We is continuously retracted from the outer peripheral surface of the folding cylinder 17. The leading end of the paper We is released from restraint. Since the rear end portion of the overlapped paper We-1 is cut by the saw blade 162 as described above and becomes the upstream rear end, the continuous paper We becomes the overlapped paper We-1 that is free at both ends. . As described above, the overlapped paper We-1 is inserted at a central portion between the pair of folding rollers 19 and 19 and folded at right angles to its own traveling direction as shown in FIG. Folded), the signature B is inserted into the signature A, and the newspaper signature E (see FIG. 16A) having a horizontal fold and a vertical fold is sent downward.

  Hereinafter, the broad paper on the outside section side of the overlapped paper We-1 is denoted as “broad paper”, and the section paper on the inside section side is denoted as “section paper”.

  In the folding cylinder device 1 according to the present embodiment, as shown in FIG. 2, below the folding cylinder 17, the position of the overlapped paper We-1 drawn into the folding rollers 19, 19 is a lateral folding portion. A paper guide 181 for guiding the downstream side is provided with a certain distance from the peripheral surface of the folding cylinder 17.

  Further, in this embodiment, as shown in FIG. 16A, the newspaper signature E has a horizontal fold line common to the signature A made of broad paper and the signature B made of section paper, and the signature A is outside. (Outside section) and two signatures A and B in which the signature B is inside (inside section).

  In the folding cylinder device 1, the prepared newspaper signature E is further sent to the downstream side and aligned in a state of being wrapped at a predetermined pitch on a delivery belt (not shown) via the delivery fan 110 shown in FIG. The paper is discharged outside. And it is carried to a post process by the conveying apparatus (not shown) provided separately from the folding cylinder apparatus 1. FIG.

  In the above-described structure, the outer peripheral speeds of the pair of folding rollers 19 and 19 are such that the downstream end of the succeeding overlapping paper We-1 does not catch up with the upstream rear end of the cut overlapping paper We-1. Is usually about 10% faster than the outer peripheral speed of the folding cylinder 17.

  Hereinafter, the structure in the folding cylinder apparatus 1 which concerns on 1st Embodiment which makes the characterizing part of this invention is demonstrated. As shown in FIG. 9, the folding cylinder device 1 according to the first embodiment is a sheet-like wrinkle generation preventing member 116 indicated by hatching in the drawing from the cap 111 to the surface of the front half part (paper entry side) of the bridge 112. Is pasted to be exchangeable.

  As the wrinkle generation preventing member 116, a Velcro tape (registered trademark), sponge tape, a sheet-like member whose surface contacting the section paper is processed into a file shape with irregularities, or a brush member with a brush on the surface is used. . It should be noted that the entire back surface of the wrinkle generation preventing member 116 has a sufficient adhesive force so that the wrinkle generation preventing member 116 is not peeled off from the outer peripheral surface of the folding cylinder 17 while the folding cylinder 17 is rotated for another printing. The double-sided tape which has is stuck.

  And this wrinkle generation prevention member 116 changes a sticking place, length, etc. according to the change of a building page, a printing medium, etc. In the drawing, the wrinkle prevention member 116 is provided only in the first half of the bridge 112, but it may be provided in the second half, that is, the entire surface of the bridge 112 in addition to the first half. Further, when the wrinkle generation preventing member 116 is attached to the cap 111 with the maximum width, the wrinkle generation preventing member 116 is attached to the extent that the saw blade receiver 172d is not covered.

  The surface roughness (degree of unevenness) of the surface of the wrinkle generation preventing member 116 that contacts the section paper is such that the section paper is wrinkled when the overlapping paper We-1 is fed to the forming rollers 13a and 13b via the folding blade 171a. The degree is sufficient to prevent this.

  In the folding cylinder device 1 according to the first embodiment, a method of folding only broad paper and a method of folding section paper on broad paper, that is, a method of folding after overlapping paper We-1 is cut alternatively. It is a form to select. That is, the folding cylinder 17 without the wrinkle generation preventing member 116 shown in FIG. 3 is used when printing only ordinary broad paper. However, when section paper is printed together with broad paper, the wrinkle as shown in FIG. 9 is used. The folding cylinder 17 equipped with the generation preventing member 116 is used.

  More specifically, when only the printed broad paper is folded by the folding cylinder device 1, the wrinkle generation preventing member 116 is peeled off from the folding cylinder 17 and the printed section paper is superimposed on the printed broad paper. That is, when the folded overlapped paper We-1 is folded by the folding cylinder device 1, it is attached to the predetermined position on the outer periphery of the folding cylinder via a double-sided tape formed on the entire back surface of the wrinkle generation preventing member 116.

  By mounting the wrinkle generation preventing member 116, the diameter of the folding cylinder 17 is substantially increased, the gap between the folding cylinder 17 and the section paper is reduced, and the frictional resistance between the folding cylinder 17 and the section paper is reduced. Increases and prevents fluttering and slipping that occur during the transfer of the section paper, and stabilizes the pulling ratio of the section paper as the folding cylinder 17 rotates.

  That is, the wrinkle generation preventing member 116 has a rough surface as described above, and the contact surface with the folding cylinder 17 is an adhesive surface that can be attached to and detached from the folding cylinder 17. By changing the pasting area of the member 116, the pulling rate during the folding operation by the folding blade 171a when printing only the broad paper can be easily changed when the section paper is printed. 16 (b) and 16 (c), which can be stably transported, and can also be generated at the time of the folding operation of the section paper bag side or at the time of the perforation (hereinafter simply referred to as “wrinkle”). Occurrence ”) can be prevented.

  Further, since the radius of the folding cylinder 17 increases by the thickness of the wrinkle generation preventing member 116, the tension acting on the section paper contacting the wrinkle generation preventing member 116 increases. As a result, it is possible to reliably prevent the generation of wrinkles that occurred during the folding operation by the folding blade 171a.

  Further, the wrinkle generation preventing member 116 is peeled off when printing only the broad paper, and the wrinkle generation preventing member 116 is pasted when printing the broad paper and the section paper. Therefore, when folding only the printed broad paper, When folding the section paper that does not have any influence and is inserted inside the printed broad paper, the folding cylinder device 1 that does not cause wrinkles on the section paper is provided. It can be easily realized without using a large-scale device.

  Further, during the above folding operation, the triangular top 113 provided at a predetermined portion of the folding blade 171a is used as a spacer for minimizing the space formed between the folding blade 171a and the section paper while protruding from the folding cylinder 17. And also serves as a paper travel guide in the vicinity of the folding blade 171a when the section paper is drawn between the folding rollers 19 and 19. Accordingly, since the section paper transport is stabilized in cooperation with the wrinkle generation preventing member 116, the section paper can be more reliably prevented from being wrinkled.

  Then, the folding cylinder apparatus which concerns on the 2nd Embodiment of this invention is demonstrated. Fig.10 (a) is a front view of the bridge applied to the folding cylinder apparatus which concerns on 2nd Embodiment. FIG. 10B is a side view of the bridge. As shown in FIG. 10, the bridge 217 has an arc shape that coincides with the outer peripheral surface of the folding cylinder 17, and is attached to the folding cylinder 17 with mounting screws (not shown) using mounting holes 217a provided at both ends thereof. .

  The bridge 217 has a brush 218 protruding at a certain height from the surface, and is planted in the front half (paper entry side).

  The brush 218 includes any one of a resin brush such as nylon (registered trademark) 66 and monoeight (registered trademark), a brush made of chemical fiber, a conductive brush, and a brush made of animal hair.

  The brush 218 functions as a wrinkle generation preventing member in the same manner as Magic Tape (registered trademark), sponge tape, and the like that can be attached to the folding cylinder or peeled off from the folding cylinder 17 in the first embodiment. That is, the surface roughness (unevenness degree) of the brush 218 is sufficient to prevent the section paper from being wrinkled when the section paper is fed to the folding roller via the folding blade 171a.

  Accordingly, the section paper on the side in contact with the folding cylinder 17 is subjected to contact resistance by the brush 218 during the transfer accompanying the rotation of the folding cylinder 17, and fluttering and slipping that occur during the transfer are prevented. Further, since the brush 218 protrudes from the outer peripheral surface of the folding cylinder 17, the diameter of the folding cylinder 17 is increased accordingly. As a result, the tension acting on the section paper increases. As a result, the section paper does not flutter between the surface of the folding cylinder 17 and the broad paper serving as the outside section, and it is possible to prevent wrinkling of the section paper that has conventionally occurred during the folding operation.

  In the second embodiment, it is also possible to replace the bridge 217 whose material and protrusion height from the bridge surface are changed in accordance with the number of section papers, building pages, and paper quality (new paper, coated paper, etc.). Thereby, the frictional resistance between the brush 218 and the section paper is changed, and the section paper serving as the inside section can be stably transferred. As a result, the folding cylinder device suitable for the number of section sheets, the construction pages, and the paper quality can be easily realized by simply replacing the bridge 217.

  FIG. 11A is a front view of a bridge 319 applied to the folding device according to the third embodiment. FIG. 11B is a side view of the bridge 319. The bridge 319 is formed in an arc shape so as to coincide with the outer peripheral surface of the folding cylinder 17, and a notch recess 320 for assembling the brush member 321 is formed on the surface of the front half (paper entry side). . The notch recess 320 is provided with an attachment hole (not shown) for attaching the brush member 321, and the other part of the notch recess 320 and the bridge 319 is provided with an attachment hole for attaching the bridge 319 to the folding cylinder 17. 319a are provided at predetermined intervals.

  FIG. 12A is a front view showing the brush member 321 assembled to the notch recess 320. FIG. 12B is a side view showing a state where the brush member 321 is attached to the bridge 319. The brush member 321 is formed in an arc shape so as to coincide with the notch recess 320, and attachment holes 321a to be attached to the bridge 319 are provided at both ends thereof, and the brush 322 is implanted on the entire surface thereof. The material of the brush 322 is the same as that in the second embodiment. Further, the surface roughness (degree of unevenness of the surface) of the brush 322 is the same as that of the brush 218 according to the second embodiment.

  First, the brush member 321 is attached to the notch recess 320 with a screw 326 as shown in FIG. 12B using the attachment hole 321a. Then, the bridge 319 is attached to the folding cylinder 17 using the attachment holes. After the installation, the diameter of the folding cylinder 17 to which the brush member 321 is attached is increased by the brush 322.

  With this configuration, similarly to the second embodiment described above, the section paper is subjected to contact resistance by the brush 322 during transfer accompanying the rotation of the folding cylinder 17, and fluttering and slipping that occur during the transfer are prevented. The section paper pulling rate and frictional resistance accompanying rotation of 17 are stabilized. As a result, it is possible to prevent the section paper from fluttering between the surface of the folding cylinder 17 and the broad paper which is the outside section, and to prevent the section paper from being wrinkled during the folding operation. .

  FIG. 13A is a front view showing the auxiliary bridge 323 that is exchanged with the brush member 321 and attached to the notch recess 320 of the bridge 319. FIG. 13B is a side view thereof. The auxiliary bridge 323 is formed in an arc shape so as to coincide with the notch recess 320, and attachment holes 323a to be attached to the bridge 319 are formed at both ends thereof.

  When only the broad paper is folded, the brush member 321 as a wrinkle-preventing member is not required. In this case, the auxiliary bridge 323 is used instead of the brush member 321 and the mounting hole 323a is used in the recess 320. And install. In this way, the brush member 321 and the auxiliary bridge 323 are replaced and attached to the bridge 319 so that only the printed broad paper is folded via the folding blade 171a and the printed section paper is overlapped on the printed broad paper. The alternative process of folding through the folding blade 171a can be realized very simply and quickly without the need for a large apparatus.

  In the present embodiment, in addition to the form in which the brush member 321 is attached to the bridge 319 as described above, a form in which the brush is also attached to the cap side may be employed. This additional mode will be described in detail below.

  FIGS. 14A and 14B are an enlarged front view (FIG. 14A) and a side view (FIG. 14B) showing the cap 311 used in the third embodiment of the present invention without the brush member 321 attached. . As shown in the figure, the cap 311 has a mounting portion 311c for the brush 325 formed on the surface thereof, and a recess 311a for attaching a saw blade receiver (not shown) of the saw blade 162 adjacent thereto. Has been. Further, a recess 311e is provided on the back surface of the cap 311 so as not to obstruct the needle shaft 172c. The cap 311 is attached to the folding cylinder 17 with an attachment screw (not shown) using an attachment hole 311b.

  Fig.15 (a) is a front view which shows the cap 324 applied to the folding cylinder apparatus of 3rd Embodiment. FIG. 15B is a side view of the brush member 324 attached to the cap 311 shown in FIG. The brush member 324 is formed in an arc shape so as to coincide with the folding cylinder 17, and attachment holes 324 a to be attached to the folding cylinder 17 are formed at both ends thereof at regular intervals. Further, a brush 325 is implanted on the surface of the cap 324 at one end in the width direction.

  Therefore, the brush 325 functions as a wrinkle prevention member by attaching the cap 324 to the cap 311 with a screw 326 using the attachment hole 324a. As a result, the section paper in contact with the folding cylinder 17 comes into contact with the brush 325 to receive contact resistance, and stabilizes the pulling and frictional resistance of the section paper as the folding cylinder 17 rotates. As a result, the section paper is prevented from fluttering and slipping between the surface of the folding cylinder 17 and the broad paper which is the outside section, and wrinkling of the section paper which has occurred during the folding operation can be prevented.

  That is, also in this embodiment, when printing only ordinary broad paper, the printed broad paper is obtained by using the cap 311 having no brush 325 shown in FIG. 4 instead of the cap 324 shown in FIG. Without the need for a large-scale apparatus, the process of alternatively folding the folded section paper via the folding blade 171a and alternatively folding the folded section paper over the printed broad paper via the folding blade, It can be realized very easily and quickly.

  As described above, according to the folding cylinder device of the offset rotary press according to the present invention, when printing on normal broad paper, the printing on only normal broad paper is stably performed by not mounting the wrinkle generation preventing member. be able to. Also, when printing section paper between broad printing, by installing a wrinkle prevention member, the diameter of the folding cylinder is substantially increased, and the gap between the folding cylinder and the section paper is reduced, The frictional resistance between the folding cylinder and the section paper is increased to prevent the fluttering that occurs during the transfer of the section paper, and the generation of wrinkles during the folding operation by the folding blade can be reliably prevented.

  Also, the wrinkle generation preventing member is removed when printing only on the broad paper, and the wrinkle generation preventing member is attached when printing the section paper between the printing of the broad paper, thereby generating wrinkles on the section paper. It is possible to easily realize a folding cylinder device that does not require a large-scale device.

  Further, in the wrinkle generation preventing member of the folding cylinder device of the offset rotary press according to the present invention, the surface that contacts the section paper is roughened, and the contact surface with the folding cylinder is an adhesive surface that can be attached to and detached from the folding cylinder. By changing the pull rate when folding with the folding blade when printing broad paper to the pull rate when printing section paper, the inside section paper can be transported stably without fluttering. And the generation of wrinkles on the section paper can be prevented.

  Further, the wrinkle generation preventing member of the folding cylinder device of the offset rotary press according to the present invention is provided on the contact surface between the brush support body and the section paper of the brush support body that can be attached to and detached from the recessed portion formed at a predetermined position of the folding cylinder. By including the brush planted in the predetermined area, the installation location and length of the brush can be changed in accordance with the change of the print medium from time to time. This makes it possible to stabilize the contact surface with the section paper to give a desired friction effect, and to stably transfer the section paper that becomes the inside section without fluttering, and generating wrinkles on the section paper. Can be prevented.

  Further, in the wrinkle generation preventing member of the folding cylinder device of the offset rotary press according to the present invention, a spacer for reducing a gap generated between the section paper and the folding blade is provided at a predetermined position of the folding blade, thereby protruding from the folding cylinder. The gap between the folding blade and the section paper can be reduced, and it can serve as a guide for identifying the travel path of the section paper. It is possible to stabilize the pulling rate during the folding operation and reliably eliminate the occurrence of wrinkles on the bag side that are defective signatures.

  And, by carrying out the printing method using the folding cylinder device of the offset rotary press according to the present invention, that is, when folding only the printed broad paper by the folding cylinder device, remove the wrinkle generation prevention member from the folding cylinder, When the folded section device is folded with the printed section paper superimposed on the printed broad paper, a wrinkle generation preventing member is mounted by performing a printing method for attaching the wrinkle generation preventing member to a predetermined position on the outer periphery of the folding cylinder. The section paper printed inside the printed broad paper is not attached at the time of normal broad paper printing, and only attached at the time of section printing, without causing special influence when folding only the printed broad paper. When folding, it is possible to always make a good quality signature without causing a problem such as wrinkles on the section paper.

  It should be noted that, in the folding press apparatus for an offset rotary press according to the present invention, instead of providing a wrinkle generation preventing member at a part of each bridge shown in FIG. The generation preventing member may be provided, or the wrinkle generation preventing member may be provided only at the rear side in the folding cylinder rotation direction with respect to the folding blade projecting position of the bridge corresponding to the section paper bag side.

  Further, even if the wrinkle generation preventing member is not provided in the cap portion, the effect of the present invention can be exhibited only by providing the wrinkle generation preventing member only in the bridge portion.

  In addition, the wrinkle generation prevention member can be easily peeled off particularly in the case of Velcro (registered trademark), sponge tape, etc., so there was something inconvenient when the wrinkle generation prevention member was once attached to the folding cylinder. When it turns out, you may add a wrinkle generation prevention member to this part further.

  Further, the present invention is not limited to the shape, size, material, and the like of each component described in the above-described embodiment, and can be appropriately changed as long as the effects of the present invention can be exhibited. Needless to say.

DESCRIPTION OF SYMBOLS 1 Folding cylinder apparatus 11 Drag roller 12a, 12b Former 13a, 13b Forming roller 14 Nipping roller 16 Saw cylinder 17 Folding cylinder 19 Folding roller 110 Delivery fan 111 Cap 111a Concave part 111e Concave part 112 Bridge 113 Triangle piece 116 Wrinkle generation prevention member 130 Crevice 161 saw base 162 saw blade 171 folding blade mechanism 171a folding blade 171b folding blade shaft 172 needle mechanism 172a needle 172c needle shaft 172d saw blade holder 181 paper guide 217 bridge 218 brush 311 cap 319 bridge 320 brush 320 321 brush 32 member 32 Auxiliary bridge 324 Cap 325 Brush A (Wa) Broad paper (continuous paper)
B (Wb) Section paper (continuous paper)
A signature, broad paper B signature, section paper E signature Wa-0, Wb-0 Continuous paper We Continuous paper Wa-1, Wb-1 Cut continuous paper We-1 Overlapping paper

Claims (2)

Only the printed thick page broad paper is sent to the folding roller through the folding blade of the folding cylinder and folded, and the printed thin page section paper is overlapped with the printed broad paper through the folding blade. In the printing method using the folding cylinder device of the offset rotary press that selectively sends the folding roller to fold,
A wrinkle generation preventing member that prevents wrinkles from being generated on the section paper when the section paper is fed to the folding roller via the folding blade is placed at a predetermined position near the folding blade protruding position on the outer peripheral surface of the folding cylinder. Ready for removal ,
The wrinkle generation preventing member has a roughened surface in contact with the section paper, and a contact surface with the folding cylinder is an adhesive surface that can be attached to and detached from the folding cylinder, and
A printing method using a folding cylinder device of an offset rotary press provided with a spacer at a predetermined position of the folding blade to reduce a gap generated between the section paper and the folding blade,
When folding only the printed broad paper by the folding cylinder device, the wrinkle prevention member is removed from the folding cylinder, and the printed section paper is superposed on the printed broad paper by the folding cylinder device. A printing method using a folding cylinder device of an offset rotary press, wherein the wrinkle generation preventing member is attached to a predetermined position on the outer periphery of the folding cylinder when folding . Only the printed thick page broad paper is sent to the folding roller through the folding blade of the folding cylinder and folded, and the printed thin page section paper is overlapped with the printed broad paper through the folding blade. In the printing method using the folding cylinder device of the offset rotary press that selectively sends the folding roller to fold,
A wrinkle generation preventing member that prevents wrinkles from being generated on the section paper when the section paper is fed to the folding roller via the folding blade is placed at a predetermined position near the folding blade protruding position on the outer peripheral surface of the folding cylinder. Ready for removal,
The wrinkle generation preventing member includes a brush support that is attachable to and detachable from a recessed portion formed at the predetermined position of the folding cylinder, and a brush planted in a predetermined region of a contact surface of the brush support with the section paper. And
A printing method using a folding cylinder device of an offset rotary press provided with a spacer at a predetermined position of the folding blade to reduce a gap generated between the section paper and the folding blade,
When folding only the printed broad paper by the folding cylinder device, the wrinkle prevention member is removed from the folding cylinder, and the printed section paper is superposed on the printed broad paper by the folding cylinder device. A printing method using a folding cylinder device of an offset rotary press, wherein the wrinkle generation preventing member is attached to a predetermined position on the outer periphery of the folding cylinder when folding .

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