JPH04292374A - Folding device for rotary printer - Google Patents

Abstract

PURPOSE:To reduce the size of a folding device, to eliminate a work at an elevated place, and to improve folding precision by applying different folding on a printed running sheet by means of a second folding unit after the passage of it through the nipping roller of a first folding unit. CONSTITUTION:A running sheet 200 running from a printing unit is divided in the direction of width into two sections by a slitter 41. The one division sheet 200 is folded in the direction of width through a drag roller 5 by a former 6. The folded sheet 200 is pulled out by a nipping roller 7. The sheet is discharged as a eight-page folded sheet onto a delivery table 14 by a first folding unit. Meanwhile, the other division sheet of two division sheets into which the sheet is divided by the slitter 41 is pulled out through a turn bar 4 and a guide roll 15 by nipper rollers 16 and 7. The running direction of the other division sheet is changed over by guide rollers 43, 44, and 45 and the sheet is delivered in a second folding unit 52. In the folding unit 52, the sheet is cut and folded two times by folding drum groups 26-28 and is discharged as a 32-page folded sheet to a delivery table 30.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a folding machine for a rotary printing press, and in particular, it is possible to miniaturize a rotary printing press equipped with a plurality of folding machines, shorten the paper path of running paper, and improve folding accuracy. Concerning a folding machine for a rotary printing press that can be measured.

0002

2. Description of the Related Art Generally, an offset rotary press has a configuration as shown in FIG. That is, the paper feed section 100
The running paper 200 unrolled from
After passing through 00, the folding machine 600 cuts and cuts the paper at a predetermined position.
The paper is folded and output as a signature book.

[0003] In such an offset rotary press, the running paper 2 printed and discharged in the printing unit 300 is
00 is introduced into the folding machine 600, cut and folded at a predetermined position, becomes a signature, and is discharged for delivery. However, if the offset rotary press requires a folding method different from the folding method of the folding machine installed in the offset rotary press, a second folding machine is used in addition to the main folding machine.
It is necessary to equip multiple folding machines. Therefore, in conventional offset rotary presses, a first folding machine and a second folding machine are installed, and the use of the first folding machine and the second folding machine can be switched depending on the type of signatures to be ejected. I use them differently.

A folding machine 600 of a conventional offset rotary press provided with the first folding machine and the second folding machine has a configuration as shown in FIG. That is, 1 is the first folding machine, 2 is the second folding machine
This is a folding machine. Reference numeral 3 constituting the first folding machine 1 is an upper turn bar for converting the running direction of the running paper 200 running from the printing unit 300 (see FIG. 4) and sending it toward the second folding machine 2. belongs to. 4 is a turn bar,
This is for feeding the running paper 200 toward the first folding machine 1. 5 is a drag roller for driving the running paper 200 running through the turn bar 4. Reference numeral 6 denotes a former, which is a triangular folding section that bends the running paper 200 running through the drag roller 5 in the running direction. 7 is an upper nipping roller which has the function of pulling out the running paper 200 folded by the former 6 at a predetermined speed. Reference numeral 8 denotes a lower nipping roller which has the function of feeding the traveling paper 200 drawn out by the upper nipping roller 7 to the folding cylinder group at a predetermined speed. 9 is a cutter cylinder for cutting the running paper 200 one by one. Reference numeral 10 denotes a plunger cylinder that has the function of bending the folded portion of the running paper 200 in a direction perpendicular to the running direction of the running paper 200. Reference numeral 11 denotes a gripper cylinder, which has the function of reliably folding the folds added in the plunger cylinder 10. The cutter cylinder 9, thrust cylinder 10, and jaw cylinder 11 constitute a folding cylinder group. Reference numeral 12 denotes a conveying tape that conveys the signature ejected by the catch cylinder 11 to the delivery fan 13. 14 is a delivery tape and a delivery fan 13
The ejected signature is conveyed to the outside. 15 is a guide roll, and 16 is a nip roller. This first folding machine 1 is placed on a stand 20.

Reference numeral 21 constituting the second folding machine 2 is an upper turn bar, which is used to feed the traveling paper 200 whose running direction has been changed by the upper turn bar 3 toward the second folding machine 2. It is. 22 is a drag roller for driving the running paper 200 running through the upper turn bar 21. Reference numeral 23 denotes a former, which is a triangular folding section that bends the running paper 200 running through the drag roller 22 in the running direction. 2
Reference numeral 4 denotes an upper nipping roller which has the function of pulling out the running paper 200 folded by the former 23 at a predetermined speed. Reference numeral 25 denotes a lower nipping roller which has the function of feeding the running paper 200 drawn out by the upper nipping roller 24 to the group of folding cylinders at a predetermined speed. 26 is a cutter cylinder for cutting the running paper 200 one by one. 27 is a first jaw cylinder, 28 is a second jaw cylinder, and the first and second jaw cylinders 27 and 28 are reliably folded at the crease added in the cutter cylinder 26 and the first jaw cylinder 27. It has an effect. The cutter cylinder 26, the first jaw cylinder 27, and the second jaw cylinder 28 constitute a folding cylinder group.

[0006] 29 is a delivery fan, and the second mouth cylinder 2
This is for adjusting the ejection speed of the signature ejected from the delivery tape 8 to the speed of the delivery tape 30. 31 and 32 are transport tapes that transport the signature discharged from the delivery tape 30 to the delivery tape 14. This transport tape 31
, 32 are provided at the lower part of the first folding machine 1, and the signature discharged from the delivery tape 30 is sent to the delivery tape 14 through the lower part of the first folding machine 1.

In the folding machine 600 of the conventional rotary offset press configured as described above, when the first folding machine 1 is used, the running paper 200 is moved from the printing unit 300 in the traveling direction by the drag roller 5 and the former 6. It is folded in two, cut by a group of folding cylinders (cutter cylinder 9, plunging cylinder 10, and pick cylinder 11), folded in the length direction, and an 8-page signature is discharged onto the delivery tape 14.

In addition, when the first folding machine 1 discharges a folded document in another way, the direction is changed by 90 degrees by the turn bar 4, and the sheet passes through the nip roller 16 and reaches the upper nipping roller 7, and then the above-mentioned The 4-page signature is delivered in two rows onto the delivery tape 14 through the same route as the 8-page signature.

Furthermore, the folding machine 60 of the conventional offset rotary press
0, if the desired signature cannot be obtained by using the first folding machine 1, the second folding machine 2 is used. In the folding machine 600 of a conventional offset rotary press, when the second folding machine 2 is used, the running paper 200 is rotated by the upper turn bar 3 at the top of the first folding machine 1 in the folding drum entry section.
The direction is changed by 0 degrees, and then the direction is changed by 90 degrees by the upper turn bar 21 at the top of the second folding machine 2, and the folding cylinder group (cutter cylinder 26, 1st mouthpiece 27, 2nd mouthpiece 28
), folded twice in the length direction, and then wound and folded into 32 pages on the delivery tape 30, and the signature is discharged.

[0010] As described above, when the folding machine 600 of the conventional rotary offset press has a plurality of signatures,
A folding cylinder entry section was provided for each folding book, and a turn bar was arranged to pass the running paper through each folding machine.

[0011]

[Problems to be Solved by the Invention] However, the folding machines of conventional rotary printing presses have the same configuration as simply two folding machines with different folding shapes placed side by side. The problem is that the folding machine itself is large and requires a large amount of space.

[0012] In addition, when using the folding machine of a conventional rotary printing press by changing from the main folding machine to a sub-folding machine,
The paper is threaded through the turn bar of the sub-folding machine, but the turn bar of this sub-folding machine is located high, and people have to climb up on the steps of the sub-folding machine to thread the paper through the turn bar. There is a problem in that the operability is poor when switching from the main folding machine to the sub-folding machine.

Furthermore, in the folding machine of a conventional rotary printing press, when a sub-folding machine is used, the running paper is folded from the upper turn bar at the top of the first folding machine 1 in the introduction section to the second folding machine. The paper passes through the upper turn bar at the top of the folding machine 2, is cut by a group of folding cylinders (cutter cylinder, first gripping cylinder, second gripping cylinder), and is ejected onto the delivery tape, so the folding accuracy is high. There is a problem that it decreases.

[0014] According to the present invention, the external shape of the folding machine can be made smaller, and work efficiency is improved by eliminating the need for work at high places such as climbing on steps when passing paper through the second folding machine. The object of the present invention is to provide a folding machine for a rotary printing press that can improve folding accuracy.

[0015]

[Means for Solving the Problems] In order to achieve the above object, in the folding machine of the rotary printing press of the present invention, the running paper printed by the printing unit is supplied to the folding machine via a former, and the paper is folded and delivered. A folding machine for a rotary printing press comprising a first folding machine having a path for discharging sheets onto a tape and a path for supplying sheets to a folding machine without passing through a former through a turn bar and discharging the sheets onto a folding delivery tape. A second folding machine is provided, which is composed only of folding drums that use a folding method different from that of the first folding machine.

In addition, in order to achieve the above object, in the folding machine of the rotary printing press of the present invention, the running paper printed by the printing unit is passed through the former, and is constituted by a cutter cylinder, a plunging cylinder, and a pick cylinder. A path for supplying paper to a folding machine and discharging it to a folding delivery tape; and a route for supplying paper to a folding machine constituted by a cutter cylinder, a thrusting cylinder, and a pick cylinder without passing through a former through a turn bar, and discharging it to a folding delivery tape. In the folding machine of a rotary printing press, the second folding machine includes a nipping roller, a cutter cylinder, a first gripping cylinder, a second gripping cylinder, and a delivery fan. The running paper printed by the printing unit is supplied to the first folding machine via the turn bar, passes through the nipping roller of the first folding machine, and then passes through the nipping roller of the second folding machine to the second folding machine. The present invention is characterized in that the folding machine adds a fold different from that of the first folding machine.

[0017]

[Operation] A path in which the running paper printed by the printing unit is supplied to the folding machine via the former, and then delivered to the folding delivery tape.It is also supplied to the folding machine via the turn bar without passing through the former, and is delivered to the folding delivery tape. By providing a second folding machine constituted only by a folding cylinder of a different folding method from that of the first folding machine of a rotary printing press having a first folding machine having a paper path, the folding machine The external shape of the folding machine can be made smaller, and work efficiency is improved by eliminating the need to work at heights such as climbing up steps when threading paper through the second folding machine.
It is possible to improve folding accuracy by shortening the paper path from the paper introduced into the running paper folding machine to the folding cylinder.

[0018] Furthermore, the running paper printed by the printing unit is supplied via a former to a folding machine constituted by a cutter cylinder, a plunger cylinder, and a catch cylinder, and the paper is folded and delivered to a delivery tape via a path and a turn bar to the former. A first path having a path for supplying sheets to a folding machine constituted by a cutter cylinder, a plunger cylinder, and a pick cylinder and discharging the sheet to a folding delivery tape.
The folding machine of a rotary printing press equipped with a folding machine is provided with a second folding machine constituted by a nipping roller, a cutter cylinder, a first jaw cylinder, a second jaw cylinder, and a delivery fan. The running paper printed by the unit is passed through the turn bar to the first
After passing through the nipping roller of the first folding machine, the second folding machine applies a fold different from that of the first folding machine through the nipping roller of the second folding machine. This allows the folding machine to be made smaller in appearance, improves work efficiency by eliminating the need for work at heights such as climbing steps when passing paper through the second folding machine, and improves work efficiency. It is possible to improve folding accuracy by shortening the paper path from when it is introduced into the paper folding machine to the folding cylinder.

[0019]

[Examples] Examples of the present invention will be described below. 1 to 3 show an embodiment of a folding machine for a rotary printing press according to the present invention. 1 is a perspective view of the overall configuration of a folding machine of a rotary printing press according to the present invention, FIG. 2 is a front view of the folding machine of the rotary printing press illustrated in FIG. 1, and FIG. 3 is a perspective view of the folding machine of a rotary printing press illustrated in FIG. FIG. 3 is a plan view of the folding machine of the machine. Note that the same numbers as in FIG. 5 represent the same members.

The difference between this embodiment and the conventional example shown in FIG. 5 is that the conventional example has the same configuration as simply two folding machines of different folding shapes placed side by side. An example is a configuration in which a conventional first folding machine and a second folding machine are combined.

In the figure, 50 is a folding machine, which is the first folding machine in FIG.
The folding machine 1 and the second folding machine 2 are combined. That is, 41 is a slitter, and the printing unit 300
(See FIG. 4) The running paper 200 that has been running is divided into two in the width direction. One of the running paper 200, which is divided into two by this slitter 41, runs through a drag roller 5, and is folded in the width direction by a former 6. This folded running paper 200 is pulled out by the upper nipping roller 7 at a predetermined speed. Reference numeral 42 denotes a guide roller for changing the running path of the running paper 200 pulled out at a predetermined speed by the upper nipping roller 7. 43, 44, and 45 are guide rollers that guide the running paper 200 toward the second folding machine 52. 46 is a turn bar, a guide roller 43,
The running direction of the running paper 200 that has been running through the paper folding machines 44 and 45 is changed by 90 degrees, and the running paper 200 is fed into the second folding machine 52. The running paper 200 that runs through this turn bar 46
is pulled into the second folding machine 52 by the lower nipping roller 25.

The running paper 200 drawn into the second folding machine 52 is passed through a group of folding cylinders (cutter cylinder 26, first mouth cylinder 2
7. It is fed into the second jaw cylinder 28) and cut by the folding cylinder group,
It is folded twice in the length direction and placed on the delivery tape 30.
The paper is ejected as a two-page signature. Further, the running paper 200 that has run through the drag roller 5 and has been folded in the width direction by the former 6 is pulled out at a predetermined speed by the upper nipping roller 7, and is pulled out by the lower nipping roller 8 at a predetermined speed by the group of folding drums (cutters). Torso 9, thrusting trunk 10,
The sheet is fed into the gripping cylinder 11), cut by a group of folding cylinders, folded in the length direction, and discharged onto the delivery tape 14 via the delivery fan 13 as an 8-page signature.

The other running paper 200 that has been divided into two by the slitter 41 runs through the turn bar 4, and is pulled out by the nip roller 16 through the guide roll 15 at a predetermined speed. The running paper 200 running through this nip roller 16 is pulled out at a predetermined speed by the upper nipping roller 7, and then is pulled out at a predetermined speed.
It is possible to travel on two routes. One route is that after passing through the upper nipping roller 7, the running direction is changed by 90 degrees by the turn bar 46, and the paper passes through the second folding machine 52. The running paper 200 running through the turn bar 46 is pulled into the second folding machine 52 by the lower nipping roller 25, and is pulled into the folding cylinder group (cutter cylinder 26, first
The delivery tape 30 is fed into the first mouth cylinder 27 and the second mouth cylinder 28), cut by the folding cylinder group, and folded twice in the length direction.
A folded book with 16 pages is discharged on top.

The other one is that after passing through the upper nipping roller 7, the lower nipping roller 8 is not suspended on the roller 42.
The paper is fed into a group of folding cylinders (cutter cylinder 9, plunging cylinder 10, and pick cylinder 11) at a predetermined speed, is cut by the group of folding cylinders, is folded in the length direction, and is placed on a delivery tape 14 via a delivery fan 13. The folded booklet is ejected.

Therefore, according to this embodiment, one folding introduction section can be used for two folding machines, so the machine can be made smaller, and the operability is improved because the paper threading operation does not have to be carried out on steps. Further, when the paper is discharged by the second folding machine, the paper path length is shortened, so that the folding accuracy can be improved.

[0026]

Effects of the Invention The present invention provides a second folding machine consisting only of a folding cylinder that uses a different folding method from the first folding machine of a folding machine of a rotary printing press. It is possible to reduce the size of the paper, eliminate work at high places such as climbing on steps when threading the paper through the second folding machine, improve work efficiency, and improve folding accuracy.

Further, the present invention provides a folding machine for a rotary printing press having a first folding machine constituted by a cutter cylinder, a plunging cylinder, and a jaw cylinder, which includes a nipping roller, a cutter cylinder, and a first jaw cylinder. Since the second folding machine is provided with a second mouth cylinder and a delivery fan, the appearance of the folding machine can be made smaller, and there are no steps etc. when threading the paper through the second folding machine. It is possible to improve work efficiency by eliminating work at high places, such as climbing up to the top, and to improve folding accuracy.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a folding machine of a rotary printing press according to the present invention.

FIG. 2 is a front view of FIG. 1 showing an embodiment of a folding machine of a rotary printing press according to the present invention.

FIG. 3 is a plan view of FIG. 1 showing an embodiment of a folding machine of a rotary printing press according to the present invention.

FIG. 4 is an overall configuration diagram of an offset rotary press to which the present invention is applied.

FIG. 5 is an overall configuration diagram of a folding machine of a conventional rotary printing press.

[Explanation of symbols]

1......First folding machine 2………Second folding machine 3………………upper turn bar 4………………Turn bar 5………………Drag roller 6…………Forma 7...... Upper nipping roller 8…………Lower nipping roller 9………………Cutter body 10......Pushing trunk 11………………mouth torso １４…………Delivery tape 26………………Cutter body 27......First mouth barrel 28………Second jaw barrel 30...Delivery tape 42...... Laura 46…………Turn bar 200……travel paper

Claims (2)

[Claims] Claim 1: A path in which running paper printed by a printing unit is supplied to a folding machine via a former, and then delivered to a folding delivery tape, and a turn bar is supplied to the folding machine without passing through the former, and the paper is folded into a delivery tape. A folding machine for a rotary printing press including a first folding machine having a paper ejection path, characterized in that a second folding machine is provided with a different number of jaw cylinders than the first folding machine. A folding machine of a rotary printing press. 2. A path for supplying running paper printed by a printing unit via a former to a folding machine constituted by a cutter cylinder, a thrusting cylinder, and a pick cylinder, folding the paper, and discharging the paper onto a delivery tape; In a folding machine of a rotary printing press, the folding machine of a rotary printing press is equipped with a first folding machine that has a path for supplying paper to a folding machine constituted by a cutter cylinder, a plunger cylinder, and a pick cylinder and for delivering paper to a folding delivery tape. A second folding machine including a cutter cylinder, a first gripping cylinder, a second gripping cylinder, and a delivery fan is provided, and the running paper printed by the printing unit is passed through a turn bar to the first folding machine.
After passing through the nipping rollers of the first folding machine, the second folding machine passes through the nipping rollers of the second folding machine so that the second folding machine applies a fold different from that of the first folding machine. A folding machine for a rotary printing press.