JPH1135230A - Two-stage triangular plate-equipped folder for rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily meet double-row feeding and single-row feeding in a section and to simplify a mechanical structure. SOLUTION: A folder 10 is provided with a drag roller 4 at the inlet of continuous paper 1. A slitter 3 for a vertical cutter is engaged with the drag roller 4 and is disposed. An upper-stage triangular plate 11 is disposed at the downstream side of the drag roller 4 with its base faced the drag roller 4 side and its top face in the flowing direction of the continuous paper 1 at the downstream side. Two sets of lower-stage triangular plates 12a, 12b are juxtaposed at the downstream side of a forming roller 17. A double-width cutting and folding device 13 is placed at the downstream sides of the lower-stage triangular plates 12a, 12b. The double-width cutting and folding device 13 consists of two cylinders, a saw cylinder 18, and a holding cylinder 19. A double-width cutting device 15 is disposed at the downstream side of the cutting and folding device 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous paper that is printed and sent out, and divides the continuous paper into two equal parts in the paper width direction. The present invention relates to a two-stage folding machine with a triangular plate for a rotary press capable of two rows and one row.

[0002]

2. Description of the Related Art Conventionally, continuous paper that has been printed and sent out is bisected in the paper width direction, and two rows of signatures formed by the bisected half-width continuous paper are output. There is a rotary press folding machine that can do this. In such a folding machine, half-width continuous paper divided into two equal parts is separately fed into two sets of triangular plates, vertically folded, cut into predetermined dimensions by two sets of cutting / folding devices, folded, and discharged in two rows. Or,
Continuous paper divided into two equal parts in the paper width direction is overlapped on one side and simultaneously vertically folded by one set of triangular plates, cut to a predetermined size by one set of cutting / folding device, folded, arranged in a line, and discharged. FIG. 5 shows an example of a conventional representative folding machine in a newspaper rotary press that prints using a newspaper having a width of four pages.

The folding machine 20 includes two sets of triangular plates 22a and 22b arranged side by side in the paper width direction on the upstream side of the paper flow, a drag roller 4 disposed at the entrance of the folding machine, and an outer side of the drag roller 4. A slitter of a vertical cutting device for cutting the continuous paper 1 wound on the front surface in the paper flow direction at the center of the paper width is provided. On the downstream side, two sets of cutting / folding, each of which cuts and folds each continuous paper 1a, 1b, which has been longitudinally cut into two newspaper pages by the vertical cutting device and longitudinally folded by the triangular plates 22a, 22b, to a predetermined size. Devices 24a, 24b, and 4 formed by these cutting / folding devices 24a, 24b.
Two sets of discharge devices 25a and 25b for discharging signatures of a folded newspaper on both sides of the operation side and the drive side of the folding machine are provided.

[0004] When performing the double-sided printing, that is, the double-row printing by such a conventional folding machine 20, as shown in FIG. 5, the continuous paper 1 having a width of four pages of the newspaper printed and sent by the printing unit is sent out. The paper is longitudinally cut into two newspaper pages by the slitter 3 of the vertical cutting device which engages with the drag roller 4 at the entrance of the folding machine. Next, the continuous papers 1a and 1b are sent to separate triangular plates 22a and 22b, respectively, and are vertically folded, then cut and folded to predetermined dimensions by respective cutting and folding devices 24a and 24b. In one printing unit, four copies of a four-page newspaper are formed per rotation of the plate cylinder, and four newspapers are formed and transported separately to the conveyors 26a and 26b of the two discharging devices, from both the operation side and the drive side of the folder. Had been discharged.

[0005] Further, when performing single-sided printing, that is, single-sheet printing, as shown in FIGS. 6 and 7, the continuous paper 1 having a width of four pages of newspapers sent from the printing unit is in the paper passing path. The slitter 3 of the vertical cutting device attached to the entrance of the turn bar 8 vertically cuts the newspaper into two pages. The vertically cut continuous paper 1b having a width of two pages on the operating side is allowed to go straight as it is, but the continuous paper 1a having a width of two pages on the driving side is placed under the straight paper 1b on the operating side through two turn bars 8, 8. Then, the compensator 9 adjusts the phase of the printing surface with the straight paper 1b.

The half-width continuous webs 1a and 1b which run side by side in phase with the upper and lower papers are superimposed on the drag roller 4 and sent to the triangular plate 22b on the operation side to be vertically folded. Is cut and folded to a predetermined size by the cutting / folding device 24b to produce two copies of a newspaper of 8 pages per rotation of the plate cylinder per printing unit. Therefore, as shown in FIG. 6, when printing is performed using four rolls of newspaper having a width of four pages simultaneously, two newspapers each having 32 pages are formed per rotation of the plate cylinder. Then, these signatures are transported in a line on the conveyor 26b of the discharging device, and are discharged from the operation side of the folder.

[0007]

As described above, in this type of conventional folding machine, a half-width continuous paper cut vertically at the center of the paper width is vertically cut at the outlet of a drag roller provided at the entrance of the folding machine. Two sets of triangular plates having a size corresponding to each other, and two sets of cutting / folding devices having a size corresponding to continuous paper vertically folded by the respective triangular plates are provided below each triangular plate,
There were the following difficulties. In the case of the single-row operation, the continuous paper sent from the printing unit is vertically cut into half widths at the turn bar entrance, and one of the vertically cut papers is shifted under the other straight paper by the turn bar, and the compensator is used. Then, the phases of the stamp surfaces of the upper and lower papers are adjusted to be superimposed on the drag roller at the entrance of the folding machine, and are sent to a set of triangular plates and a cutting / folding device. For this reason, a straight course and a turn bar course are required for the paper threading route,
In addition to the need for a turn bar for turning, a vertical cutting device at the entrance of the turn bar and a compensator, and a guide roller and a paper passing device for both courses, the mechanical structure of the paper passing path becomes more complicated with multiple pages, and large I had to change. In the case of the double-row operation, the continuous paper sent from the printing unit is vertically cut into half widths at the center of the drag roller at the entrance of the folding machine, and each of the half-width continuous papers cut and cut into separate triangular plates. Since the signatures are sent to the folding device to create the signature, two cutting / folding devices are required, and the operation adjustment and the maintenance of the machine require manual labor. In the case of the single-row operation and the case of the two-row operation, the paper threading path is significantly different, and it is necessary to set the paper tension in accordance with the operating conditions. Skill was required. Accordingly, the present invention solves these problems, and can easily cope with double-row and single-row operation, and further greatly simplifies the mechanical structure and easily adjusts the two-stage rotary press. It is intended to provide a folding machine with a triangular plate.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a vertical cutting device for cutting a continuous paper that is printed and sent out into two equal parts in the paper width direction, and a two-part cutting apparatus. Two sets of lower triangular plates for vertically folding a half-width continuous paper to a 1/4 width; a cutting / folding device capable of cutting and folding a 1 / 4-width vertically-folded continuous paper; And a discharge device capable of discharging the signature formed by the apparatus to the outside of the machine. On the other hand, an upper triangular plate with the base directed toward the upstream and the vertex directed toward the downstream is disposed upstream of the lower triangular plate, and the half-width continuous paper is placed on each side for changing the orientation of the upper triangular plate. Over the hypotenuse, overlap the continuous half-width paper, and cut and fold the above The width of the placing and discharging device is widened so that the continuous paper folded vertically to the above quarter width is arranged in two lines in parallel, cut, folded, and discharged, and two lines of signatures are output. In some cases, the half-width continuous paper superimposed by the upper triangular plate is separated and supplied to any lower triangular plate, and when one line is taken out, the superimposed half-width continuous paper is supplied to one of the lower triangular plates. It is characterized by doing so.

According to the present invention, since the cutting edge of the slitter of the vertical cutting device is inserted into the central groove of the drag roller and rotated, the continuous paper sent out from the printing unit and wound on the outer surface of the drag roller is used. Then, the drag roller rotates in the direction in which the paper is sent out, and is sent out onto the upper triangular plate while being vertically cut in half. Continuous paper that slides down the slope of the upper triangular plate while being vertically cut at the center of the paper width is sent out from both sides of the upper triangular plate toward the pair of forming rollers at the tip of the upper triangular plate, with their backs overlapping. It is.

[0010] When two rows are to be output by this folding machine, a half-width continuous sheet having a back surface overlapping each other after passing through a forming roller is separated into right and left sides and divided into two sets of lower triangular plates and fed. Fold it vertically with each lower triangular plate. The continuous paper, which is vertically folded by each lower triangular plate and descends in two rows, is fed into a double-width cutting / folding device, and the desired signatures cut and folded to a predetermined size are simultaneously made in two copies. The paper is discharged from the discharge conveyor in two rows. Further, when one line is set by this folding machine, the half-width continuous paper that has passed through the forming roller and overlapped is passed through a set of lower triangular plates as it is to be vertically folded. Then, the continuous paper folded vertically by the pair of lower triangular plates is lowered in one line, sent to a double-width cutting / folding device, cut to a predetermined size, folded, and folded. The signatures are formed one by one, and are discharged in a row from one side of the discharge conveyor to the outside of the apparatus.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A two-stage folding machine with a triangular plate for a rotary press according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a folding machine 10 with a two-stage triangular plate for a rotary press according to the present invention.
The present invention is applied to a newspaper rotary press using continuous paper 1 having a page width. As shown in the figure, the folding machine 10 has a drag roller 4 provided at the entrance of the continuous paper 1 and engages with the drag roller 4 to dispose a slitter 3 of a vertical cutting device. The slitter 3 is disposed at the center of the continuous paper 1 so that the continuous paper 1 can be bisected.

Downstream of the drag roller 4, an upper triangular plate 11 having a bottom directed toward the drag roller 4 upstream of the continuous paper 1 and an apex directed toward the flow direction downstream of the continuous paper 1 is disposed. A forming roller 17 is disposed at the vertex of the roller 11 in a direction perpendicular to the axis of the drag roller 4. Continuous paper 1a, 1b vertically cut into two pages of newspaper
Is folded inward at a side portion of the upper triangular plate 11, and the back surface is overlapped by the forming roller 17. Downstream of the forming roller 17, a lower triangular plate 12a,
12b are arranged side by side in a direction perpendicular to the upper triangular plate 11. The lower triangular plates 12a and 12b are continuous papers 1a and 1b.
The vertex is directed to the upstream side of the continuous paper 1 so that the apex overlaps the folded portion of the continuous paper 1a, 1b. Therefore, the continuous papers 1a and 1b each having the width of two pages of the newspaper, which overlap and descend from the forming roller 17, can be separated and separately vertically folded to a quarter width of the continuous paper 1.

On the downstream side of the lower triangular plates 12a and 12b.
A double-width cutting / folding device 13 is provided. The double-width cutting / folding device 13 includes a saw cylinder 18 and a folding cylinder 19.
In this case, the surface length (width direction) of each body is substantially twice as long as that of the conventional machine. The double-width cutting / folding device 13 includes continuous papers 1a, 1b vertically folded by lower triangular plates 12a, 12b.
Can be arranged in parallel in two rows and cut and folded at the same time. On the downstream side of the cutting / folding device 13, the discharging device 1
5 are provided. The discharge device 15 has a known structure including an impeller and a paper discharge conveyor 16 and has a surface length (width direction) substantially twice that of the conventional machine. The discharge direction of the discharge conveyor 16 in the present embodiment is the same as the paper traveling direction, that is, the longitudinal direction of the rotary press, as shown in FIGS. May be perpendicular to the longitudinal direction of the rotary press.

Next, a folding machine 10 with a two-stage triangular plate for a rotary press.
The operation of will be described. In the folding machine 10, the newspaper 4 pages wide continuous paper 1 is sent out from the printing unit and dragged by the drag roller 4.
Wrapped around the outside surface. The drag roller 4 is rotated in the direction in which the continuous paper 1 is sent out. When the cutting edge of the slitter 3 of the vertical cutting device is inserted into the center groove of the drag roller 4 and rotated, the continuous paper 1 is vertically cut in half at the center of the paper width. While sending it to the surface of the upper triangular plate 11. The continuous paper 1a, 1b, which has been vertically cut to have a width of two pages of the newspaper, slides down the slope of the upper triangular plate 11, and the oblique sides of the upper triangular plate 11 turn the paper surface 90 degrees (if the paper surfaces overlap, , Need not be 90 degrees), and are sent out to a pair of forming rollers 17 at the tip of the upper triangular plate 11 while their respective back surfaces overlap.

When the folding machine 10 performs the two-line output, as shown in FIG. 1, the continuous paper 1a, 1b having a half width of two pages of a newspaper having passed through the forming roller 17 and overlapped on the back side is used. Separate the flow into two routes, left and right. That is, the half-width continuous papers 1a and 1b are separately fed into the separated lower triangular plates 12a and 12b, and are respectively separated by the lower triangular plates 12a and 12b into １ ／ of the continuous paper 1.
Folded vertically to width. After passing through the lower triangular plates 12a and 12b, the half-width continuous papers 1a and 1b descend in two rows while being vertically folded. Double width cutting on the downstream side
In the folding device 13, half-width continuous papers 1a and 1b
A pair of saw cylinders 18 and folding cylinders 19 are arranged in a row.
Get in between. Here, the continuous papers 1a and 1b are cut and folded to a predetermined size, and four copies of a four-page newspaper are formed per one rotation of the plate cylinder per one roll of newspaper having a width of four pages.

Accordingly, as shown in FIG. 4, if four rolls of newspaper having a width of four pages are used at the same time for printing, four newspapers of 16 pages are produced per rotation of the plate cylinder. Then, these signatures are placed on the discharge conveyor 16 of the discharge device, transferred in two rows, and discharged outside the machine.
When one line is set by the folding machine 10, as shown in FIG. 2 and FIG.
It follows the same path as in the case of two rows. Newspaper 2-page width continuous paper 1a, 1 overlapped by forming roller 17
b is vertically folded as it is through one lower triangular plate 12b. That is, the lower triangular plate 12a side is not used.

The continuous paper 1a, 1b is a lower triangular plate 1
By 2b, the sheets are vertically folded while being stacked, lowered in one line, and sent to the double-width cutting / folding device 13. Here, the continuous papers 1a and 1b are cut to a predetermined size in a state of being overlapped and folded, and two rolls of eight pages of newspaper per rotation of the plate cylinder per roll of newspaper four pages wide. Are formed one by one. Therefore, as shown in FIG. 4, when printing is performed using four rolls of newspaper having a width of four pages simultaneously, two newspapers each having 32 pages are formed per rotation of the plate cylinder. Then, the signature is sent to the delivery conveyor 16 of the delivery device.
, And are discharged out of the apparatus from one side of the discharge conveyor 16 in one line.

Although the embodiments of the present invention have been described above, the present invention is, of course, not limited thereto, and various modifications can be made based on the technical concept of the present invention.

[0019]

As described above, the folding machine according to the present invention overlaps the upper triangular plate on the back surface of each half-width continuous paper bisected in the paper width direction, and descends from the upper triangular plate by overlapping. By combining two sets of lower triangular plates that separate half-width continuous paper to the left and right and vertically fold them separately, and a double-width cutting / folding device that can simultaneously cut and fold the continuous paper vertically folded by these lower triangular plates Since it is possible to cope with one-row and two-row display, the following effects are obtained. Continuous paper sent from the printing unit is sent to the position of the drag roller at the entrance of the folding machine in exactly the same paper passing path as in the case of two-row printing in the case of one-row printing. There is no need to provide guide rollers for the turn bar for shifting, the vertical cutting device at the entrance of the turn bar, the compensator at the exit of the turn bar, and the paper threading device of the turn bar course in the paper passing path, which greatly simplifies the mechanical structure and facilitates the threading operation. It will be easier. Since the width of the cutting / folding device is doubled, a single device can be used even in the case of two rows, and there is no need to use two cutting / folding devices as in the related art. For this reason, the structure of the folding machine is simplified, the number of manpower required for operation adjustment and maintenance is reduced by half, and work efficiency is improved. In both the single-row operation and the two-row operation, the paper passage path and the paper width up to the drag roller at the entrance of the folding machine are the same, so there is no need to change the paper tension setting according to the operating conditions as in the past. Thus, a stable printing operation can be always performed without any skill. Therefore, the present invention can easily cope with the switching operation between the single row and the double row, and can provide a folding machine with a greatly simplified mechanical structure and easy operation adjustment.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of a folding machine with a two-stage triangular plate of a rotary press according to an embodiment of the present invention.

FIG. 2 is a perspective view of a rotary press according to an embodiment of the present invention, in which one row is set in a folding machine with a two-stage triangular plate.

FIG. 3 is a plan view showing a flow of paper of the folding machine in FIG. 2;

FIG. 4 is a side view showing a flow of paper when a plurality of continuous papers are passed through a folding machine with a two-stage triangular plate of the rotary press according to the embodiment of the present invention.

FIG. 5 is a perspective view showing an outline of a conventional folding machine.

FIG. 6 is a side view showing the flow of paper when a plurality of continuous papers are passed through a conventional folding machine to form a single line.

FIG. 7 is a plan view of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Continuous paper 1a, 1b Semi-secondary continuous paper 3 Slitting machine of a vertical cutting device 4 Drag roller 10 Folding machine with two-stage triangular plate 11 Upper triangular plate 12a, 12b Lower triangular plate 13 Double-width cutting / folding device 15 Discharge device 16 Discharge Conveyor 17 Forming roller 18 Saw cylinder 19 Folding cylinder

Claims (1)

[Claims] 1. A vertical cutting device that cuts a continuous paper that is printed and sent out into two equal parts in the paper width direction, and vertically folds a half-width continuous paper that is cut into two equal parts into a quarter width. A cutting / folding device capable of cutting and folding a lower triangular plate of a set, a continuous paper folded vertically to 1/4 width, and a discharging device capable of discharging a signature formed by the cutting / folding device to the outside of the machine. In a rotary press folding machine capable of switching the signature between two rows and one row, the bottom is directed upstream and the top is directed downstream with respect to the flow of continuous paper. The upper triangular plate is disposed upstream of the lower triangular plate, the half-width continuous paper is hung on the oblique sides on each side for changing the orientation of the upper triangular plate, and the half-width continuous paper is overlapped, and The width of the cutting / folding device and the discharge device is continuously folded vertically to the 1/4 width. The paper is arranged in two rows in parallel, and is widened so that it can be cut, folded, and discharged. At the time of taking out the signatures in two rows, the half-width continuous paper superimposed on the upper triangular plate is separated and separated. A folding machine with a two-stage triangular plate for a rotary press, wherein the half-width continuous paper that has been superimposed is supplied to one of the lower triangular plates when one row is taken out.