JP3348399B2 - Discharge device of folding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
Regarding a folding device having a folding mechanism, particularly when the continuous paper fed between the folding cylinder and the saw cylinder is cut parallel to the axis of the folding cylinder without holding the leading end of the continuous paper without being held on the outer peripheral surface of the folding cylinder. The present invention relates to a discharge device of a folding device that discharges generated unconstrained paper, particularly paper obtained by cutting a starting end portion of a continuous paper and a defective portion subsequent thereto.

[0002]

2. Description of the Related Art The leading end of continuous paper fed between a folding cylinder and a saw cylinder is held on the outer peripheral surface of the folding cylinder, and is wound around the outer peripheral surface by the rotation of the folding cylinder, and cut into a predetermined length. As a folding device that folds in parallel with the axis of the folding cylinder, for example, cutting for edge folding is described on page 55 of “Newsprint Printing Edition” (published by the Japan Newspaper Association on October 31, 1980). The folding mechanism is shown, and the cutting / folding mechanism of blade folding is shown on page 91 of "Newspaper Printing Handbook" (published by the Japan Newspaper Association on April 10, 1997).

[0003] In addition, before the continuous paper introduced into the folding device enters between the folding cylinder and the saw cylinder, the starting end thereof and a defective portion following the cutting end are cut, and the cut paper is discharged. Is Japanese Patent Application Laid-Open No. 3-61262, "Paper Ejection Device for Folding Machine".
Are publicly known.

FIG. 3 shows the above-mentioned “newspaper printing”.
It is the schematic of the common component part of the folding device of the rotary press shown by "print edition revised edition" and "newspaper printing handbook." In this folding device, the continuous paper W is cut and folded by the downstream cutting / folding mechanism 5.
Nipping rollers 57, 57 for guiding toward 1;
A cutting / folding mechanism 51 including a folding drum 52 and a saw drum 53 that cuts and folds the continuous paper W sent from the nip rollers 57, 57, and a gap is appropriately formed on the outer peripheral surface of the folding drum 52. And a paper guide 56 provided with an appropriate width in the paper width direction and having a leading end held on the outer peripheral surface of the folding drum 52 and guiding paper drawn along the outer peripheral surface of the folding drum 52 (hereinafter, referred to as a paper guide 56). , A first prior art).

In the first prior art, the continuous paper W fed between a folding cylinder 52 and a saw cylinder 53 of a cutting / folding mechanism 51 is used.
Is cut in parallel with the axis of the folding drum 52 between the folding drum 52 and the saw drum 53 which rotate in opposite directions to face each other, and substantially simultaneously with the cutting, the continuous paper W upstream from the cutting position is moved to the cutting position. At the upstream position, that is, the cut edge portion is penetrated in the thickness direction by a needle 54 provided in the folding drum 52, is held on the outer peripheral surface of the folding drum 52, and is wound by the rotation of the folding drum 52, It is pulled in while being guided by the paper guide 56 along the outer peripheral surface of the folding drum 52. The next cutting is performed on the upstream side of the continuous paper W when the leading edge of the continuous paper W drawn by the needle 54 reaches an appropriate position in the rotation direction of the folding drum 52. The cut paper having a predetermined length is cut by folding means (not shown) in the cutting / folding mechanism 51 so that the center of the leading edge and the rear edge cut in the next cutting is formed. Folded body 5
The sheet is folded in parallel with the axis 2 to form a two-fold print, which is transferred to a conveyer (not shown) via an impeller (not shown) and carried out of the machine. Then, the above-described cutting and folding are repeated.

Japanese Unexamined Patent Publication No. 3-61262 discloses a paper cutter provided in a continuous paper path on the upstream side of a cutting / folding mechanism and capable of cutting continuous paper. It comprises a nip means for sandwiching and feeding the continuous paper in the downstream direction, and a paper guide for discharging the paper cut by the paper cutter to the side of the continuous paper path (hereinafter referred to as a second conventional technique).

In the second prior art, a continuous sheet introduced into a folding device is cut into an irregular portion at a starting end of the continuous sheet and a defective portion following the same before entering a cutting / folding mechanism.
The cut paper is discharged by the guide of the paper guide.

[0008]

The above prior arts include:
Each had some issues to solve. That is,
In the first prior art, when the continuous paper W is introduced into the folding device, when the starting end of the continuous paper W is fed between the folding cylinder 52 and the saw cylinder 53 and cut in parallel with the axis of the folding cylinder 52, At approximately the same time as the cutting, the continuous paper W on the upstream side of the cutting position has the leading edge cut by the needle 54 provided in the folding drum 52 held on the outer peripheral surface of the folding drum 52, Since the paper W 'at the downstream end is not held on the outer peripheral surface of the folding drum 52 by the needle 54, the paper W' is unrestricted free paper. It is easy to jam between the paper guides 56. If the jam occurs, the continuous paper W on the upstream side is obstructed by the passage when it is sent, and jams one after another, causing a further large paper jam and leading to mechanical breakage.

Also, for example, in a shaftless rotary press in which the folding device and the printing device are driven by different driving machines and the respective devices are synchronously controlled, it takes time until the initial phases of the folding device and the printing device match. Until they match, there may be a slight difference between the rotation speed of the printing device and the rotation speed of the folding device. When the rotation speed of the printing device is lower than the rotation speed of the folding device, the continuous paper on the upstream side of the folding device is not sent out. In the direction, the folding cylinder 52
When the continuous paper W is pulled by the needle 54 along its outer peripheral surface due to the rotation of the continuous paper W, the continuous paper W cannot keep up with the speed of the needle 54, and the through-hole of the continuous paper W formed by the needle 54 gradually becomes oval. Thus, the continuous paper W was detached from the staple 54. like this,
The continuous paper W on the downstream side of the cutting position, which is not held by the needle 54 on the outer peripheral surface of the folding drum 52, is released from the needle 54 and is unrestricted free paper. Paper jams easily occur in between.

Further, in the second prior art, the irregular portion of the starting end of the continuous paper is cut by a paper cutter before entering the cutting / folding mechanism, and the continuous paper having the same leading end is formed with the folding drum. It is sent between saw cylinders and cut. However, also in this case, the continuous paper upstream of the cutting position is held on the outer peripheral surface of the folding drum by the needle provided in the folding drum, but the paper at the start end downstream of the cutting position is folded by the needle. Since it is not held on the outer peripheral surface of the drum, it is unrestricted and free paper, and the paper at the start end is more likely to be clogged downstream than between the folding cylinder and the saw cylinder. When they are fed, they obstruct the passage and become jammed one after another, causing even larger paper jams and leading to machine damage.

SUMMARY OF THE INVENTION The present invention is to solve the problems of the prior art at once, and feeds continuous paper between the folding cylinder of the cutting / folding mechanism and the saw cylinder, and aligns the continuous paper with the axis of the folding cylinder. When cut in parallel, paper on the downstream side of the cut portion, whose leading edge was not held on the outer peripheral surface of the folding drum by the needle provided in the folding drum, entered between the outer peripheral surface of the folding drum and the paper guide, and It is an object of the present invention to provide a discharge device of a folding device for preventing clogging.

[0012]

In order to achieve the above object, a discharge device of a folding device according to the present invention is configured such that a continuous paper fed between a folding cylinder and a saw cylinder has a leading end connected to the outer periphery of the folding cylinder. In the folding device, the paper is pulled along the outer peripheral surface of the folding cylinder by the rotation of the folding cylinder and cut to a predetermined length, and the paper downstream of the cutting position is folded in parallel with the axis of the folding cylinder. A position for closing a gap between the folding cylinder and the saw cylinder along the outer peripheral surface of the folding cylinder, guiding the continuous paper fed between the two cylinders and drawn along the outer peripheral surface of the folding cylinder; A guide means movably provided between a position where the lower part of the gap between the cylinders can be opened and the cut sheet of continuous paper fed between the two cylinders can be dropped downward, and a guide means movably provided between the two. A guide displacement drive means for moving the guide means between the two positions, and a folding cylinder and a saw cylinder. Receiving means for receiving the cut paper falling below the gap of the folding cylinder, the tip of the cutting paper being parallel to the axis of the folding cylinder without being held by the outer peripheral surface of the folding cylinder while being fed between the folding cylinder and the saw cylinder. The paper produced by the cutting is dropped below the gap between the folding cylinder and the saw cylinder, and is configured to be receivable.

In the above-mentioned discharge device of the folding device, the receiving means is a conveyor so that the received paper can be carried out of the apparatus.

[0014]

[Operation] A guide means for guiding the paper wound around the outer peripheral surface by the rotation of the folding cylinder and drawn along the outer peripheral surface of the folding cylinder to the downstream side in the rotation direction of the folding cylinder along the outer peripheral surface of the folding cylinder, The guide displacement driving means is displaced from a position along the outer peripheral surface of the folding cylinder to a position opening below a gap between the folding cylinder and the saw cylinder.

The guide means is in an open state at the time of the slow running operation of the rotary press at the beginning of the operation.
The continuous paper cut by the folding cylinder and the saw cylinder, and the paper which is not held by the needle of the folding cylinder and is in a free state is dropped and discharged below this open portion, and is in a free state which is not held by the needle. Paper is prevented from jamming between the folding cylinder and the paper guide.

[0016]

1 and 2 show an embodiment of the present invention.
It will be described based on. FIG. 1 is an explanatory view schematically showing a configuration of a folding device provided with a discharge device of the present invention, and FIG. 2 is a partially cutaway plan view of the discharge device.

In the rotary press, at least one sheet feeding device and at least one printing device (not shown) are provided, and a folding device having a cutting / folding mechanism 1 shown in FIG. Has been deployed. Then, after the continuous paper W pulled out from the take-up paper attached to each paper feeding device is printed in each printing device, the continuous paper W is introduced into the folding device, and is cut into a predetermined length by the cutting / folding mechanism 1. After being cut and folded, printed matter is produced.

The folding device rotates at least one of the continuous papers W introduced in the opposite direction to guide the continuous papers W downstream.
A pair of nip rollers 7, 7 and a fold which is provided in parallel with the width direction of the continuous paper W so as to sandwich the continuous paper W guided by the nip rollers 7, 7 and cuts the continuous paper W in parallel with its axis. A cutting / folding mechanism 1 including folding means (not shown) for folding the cylinder 2, the saw cylinder 3, and the central portion of the cut paper in the running direction parallel to the axis of the folding cylinder 2, and the outer peripheral surface of the folding cylinder 2. The paper guide 6 includes a paper guide 6 that holds a leading end and guides the paper drawn along the outer peripheral surface of the folding cylinder 2 by the rotation of the folding cylinder 2, and a discharge device 18 provided upstream of the paper guide 6. . At the downstream side of the folding device, there is provided an impeller (not shown) for transferring the printed material folded in two by the folding device to a conveyer (not shown) that carries the printed material out of the machine.

The diameter ratio between the folding cylinder 2 and the saw cylinder 3 of the cutting / folding mechanism 1 is, for example, 5: 2. Saw blades 5 are provided at two locations on the circumferential surface of the saw cylinder 3 at equal intervals in the circumferential direction. A saw blade receiver 21 facing the saw blade 5 and a needle 4 are provided on the upstream side of the saw blade receiver 21 at positions, and are fed by the nip rollers 7 by rotation of the folding cylinder 2 and the saw cylinder 3. The cut continuous paper W is cut by the saw blade 5 and the saw blade receiver 21, and the downstream end of the cut portion is penetrated by the needle 4 in the thickness direction. Is to be held.

The paper guide 6 is held by the needle 4, is wound around the outer peripheral surface by the rotation of the folding cylinder 2, and draws the paper drawn along the outer peripheral surface of the folding cylinder 2 along the outer peripheral surface of the folding cylinder 2. And is provided with an appropriate clearance from the outer peripheral surface of the folding cylinder 2.

As shown in detail in FIGS. 1 and 2, the discharge device 18 closes the lower part of the gap between the folding cylinder 2 and the saw cylinder 3 along the outer peripheral surface of the folding cylinder 2 and 3, a position for guiding the continuous paper W drawn in along the outer peripheral surface of the folding cylinder 2 and a lower portion of a gap between the folding cylinder 2 and the saw cylinder 3 are opened to open the gap between the both cylinders 2 and 3. A guide means 8 movably provided between a position at which the cut paper of the continuous paper W fed into the paper is dropped downward, a guide displacement drive means 13 for driving the guide means 8 to be displaced, and the folding cylinder 2. The folding cylinder 2 is provided below the opening when the lower part between the saw cylinders 3 is opened.
And receiving means 20 for receiving the cut paper falling from the gap between the cutting cylinder 3 and the saw cylinder 3.

The guide means 8 comprises a movable paper guide 9 formed in a shape constituting a part of the upstream side of the paper guide 6, and a shaft 10 to which the movable paper guide 9 is connected via an arm. ing. The shaft 10 is the folding cylinder 2
The bearings 11, 11 are attached to brackets 12, 12 having both ends attached to the frames F, F 'at positions below the gap between the cutting cylinder 3 and the saw cylinder 3 and appropriately deviated toward either of the cylinder sides.
It is rotatably supported through.

The guide displacement driving means 13 has its base end rotatably supported by an arm 15 having one end attached to the end of the shaft 10 and a support shaft 17 attached to one frame F '. The tip of the other cylinder rod is
A fluid pressure cylinder (hereinafter, referred to as a pneumatic cylinder 14) is rotatably mounted to the other end of the arm 15 via a joint 16 and a pin 19. The position where the movable paper guide 9 is in a posture of being connected to the paper guide 6 due to the expansion and contraction of the cylinder rod of the pneumatic cylinder 14, and the position where the movable paper guide 9 is separated downward from this position and the lower part between the folding cylinder 2 and the saw cylinder 3 is opened. Is reciprocally displaced.

The receiving means 20 is a dish-shaped container having a width larger than the width of the paper obtained by cutting the continuous paper W falling from the gap between the folding cylinder 2 and the saw cylinder 3 and having an open upper portion. It is designed to receive incoming paper. When the fallen paper accumulates, it is carried out of the machine, and the paper is discarded and used repeatedly.

Next, the operation of the apparatus according to the above-described embodiment will be described. When the operation of the rotary press is stopped and the operation is slow at the beginning of the operation, the cylinder rod of the pneumatic cylinder 14 of the guide displacement driving means 13 is extended by receiving the signal of the machine stop or the signal of the slow operation, and the movable paper guide is moved. Reference numeral 9 denotes a position where the lower part between the folding cylinder 2 and the saw cylinder 3 is opened by being rotationally displaced downward from a position connected to the paper guide 6.

At the time of the slow rotation operation at the beginning of the operation of the rotary press, the continuous paper W that has passed through the printing device is driven by the slow rotation operation and sent out to the folding device. The paper is slowly fed between the folding cylinder 2 and the saw cylinder 3 of the cutting / folding mechanism 1 by the nip rollers 7, 7 which rotate. The starting end of the continuous paper W fed between the folding cylinder 2 and the saw cylinder 3 is cut in parallel with the axis of the folding cylinder 2 by a saw blade 5 provided in the saw cylinder 3.

At this time, almost simultaneously with the cutting, the continuous paper W on the upstream side of the cutting position has its leading edge cut by the needle 4 provided in the folding cylinder 2 held on the outer peripheral surface of the folding cylinder 2. . on the other hand,
Since the paper W 'at the start end downstream from the cutting position is not held by the needle 4, it becomes unrestricted free paper, which falls downward and is received by the receiving means 20.

The continuous paper W, the leading end of which is held by the needle 4 on the upstream side of the cutting position, is wound around the outer peripheral surface of the folding cylinder 2 by rotation of the folding cylinder 2, and is wound along the outer peripheral surface of the folding cylinder 2 by the needle 4. It is retracted and the next cutting is performed at a predetermined rotation position. And the preceding cut paper is this folding cylinder 2
At the center in the rotation direction of the cutting / folding mechanism 1, is folded in parallel with the axis of the folding cylinder 2 by folding means (not shown) in the cutting / folding mechanism 1, and is folded out of the machine via an impeller and a conveyor (not shown). Is done.

Thereafter, the operation is shifted to a speed-up operation, and when the operation speed reaches a predetermined operation speed, the cylinder rod of the pneumatic cylinder 14 is contracted by the speed signal, and the movable paper guide 9 is rotationally displaced upward and the paper rod is moved upward. It becomes a position connected to the guide 6, and the lower part between the folding cylinder 2 and the saw cylinder 3 is closed along the outer peripheral surface of the folding cylinder 2. Thereafter, the paper cut by the cutting / folding mechanism 1 operated by the rotation of the folding cylinder 2 and the saw cylinder 3 is sequentially moved along the movable paper guide 9 and the paper guide 6 connected thereto. It becomes a folded print and is carried out of the machine.

Also, in a shaftless rotary press, it takes time until the initial phases of the folding device and the printing device are aligned at the start of the machine operation.
A slight difference may occur between the rotation speed of the printing device and the rotation speed of the folding device. When the rotation speed of the printing device is lower than the rotation speed of the folding device, the needle flow phenomenon occurs as described above, and the continuous paper W is detached from the needle 4 and is not held on the outer peripheral surface of the folding drum 2 by the needle 4. Is unrestricted free paper, which also falls downward from the gap between the saw cylinders 3 of the folding cylinder 2 in the same manner as the paper W 'at the start end of the continuous paper W not held. , Are received in receiving means 20 provided below.

The folding device and the printing device are rotated synchronously in phase with each other, and the continuous paper W fed between the folding cylinder 2 and the saw cylinder 3 is moved by the needle 4 onto the outer peripheral surface of the folding cylinder 2. The needle 4 is held along the outer circumferential surface of the folding cylinder 2 by the rotation of the folding cylinder 2.
And is folded in parallel with the axis of the folding cylinder 2 to be folded into a two-fold print and then carried out of the machine. Then, the operation is shifted to a speed-up operation, and when a predetermined operation speed is reached, the speed is increased. The signal causes the cylinder rod of the pneumatic cylinder 14 to retract, and the paper guide 9 closes the lower part between the folding cylinder 2 and the saw cylinder 3 along the outer peripheral surface of the folding cylinder 2.

The timing at which the paper guide 9 moves away from the position where the paper guide 9 is separated from the outer peripheral surface of the folding drum 2 and the lower portion between the folding drum 2 and the saw drum 3 is opened to a position near the outer peripheral surface of the folding drum 2 is determined as follows. This may be performed based on the carry-out count of an appropriate number of copies of the printed matter.

In the above-described embodiment, the discharging device 1
Although the guide means 8 of FIG. 8 is shown as a part of the paper guide 6, the entire paper guide 6 is used as a movable paper guide, and the entire paper guide 6 is guided by the guide displacement driving means 13 to the outer periphery of the folding drum 2. The rotational displacement may be performed from a position facing the surface with an appropriate gap therebetween to a position where the lower part between the folding cylinder 2 and the saw cylinder 3 is opened.

Further, the driving means of the guide displacement driving means 13 for rotating and displacing the movable paper guide 9 may be replaced with a pneumatic cylinder 14 to be a rotary actuator, which may be connected to the shaft 10 for use.

Further, a conveyor may be used as the receiving means 20, and the paper falling below the space between the folding cylinder 2 and the saw cylinder 3 may be received on the conveyor, and may be sequentially carried out of the machine.

[0036]

As described above, the operation and effect as described below can be obtained by implementing the present invention.

That is, when the starting end of the continuous paper is fed between the folding cylinder and the saw cylinder of the folding device and cut in parallel with the axis of the folding cylinder, the continuous paper is located downstream from the cutting position and enters the folding cylinder. Cut paper not held on the outer peripheral surface of the folding cylinder by the provided needle is rotated downward by the guide means to open the lower part between the folding cylinder and the saw cylinder, so that the paper is discharged downward. Paper that was not retained on the outer surface of the folding cylinder,
Clogging between the paper guide provided along the outer peripheral surface of the folding cylinder and the folding cylinder can be prevented.

Therefore, it is possible to prevent the machine from being damaged due to the subsequent paper jam caused by the paper jam between the paper guide and the folding cylinder. In addition, since there is no machine stoppage due to machine breakage, no loss time is generated. Further, since the paper falling downward is received by the receiving means, the cut paper falling downward does not scatter around, and it is easy to carry it out of the machine.

According to the second aspect of the present invention, the receiving means is used as a conveyor so that the paper is carried out of the apparatus. This makes it possible to automate the carrying out, and it is not necessary to manually remove the paper that has fallen and accumulated. Good for safety.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view schematically showing a folding device provided with a discharge device of the present invention.

FIG. 2 is a partially broken plan view schematically showing the discharge device of the present invention.

FIG. 3 is a configuration explanatory view schematically showing a conventional folding device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cutting and folding mechanism, 2 ... Folding cylinder, 3 ... Saw cylinder, 4 ... Needle, 5
... Saw blade, 6 ... Paper guide, 7 ... Nipping roller, 8 ... Guide means, 9 ... Movable paper guide, 10 ...
Shaft, 11 bearing, 12 bracket, 13 guide displacement driving means, 14 pneumatic cylinder (fluid cylinder), 15 arm, 16 joint, 17 support shaft,
18 ejector, 19 pin, 20 receiving means, 21
Saw blade receiver, 51: cutting / folding mechanism, 52: folding cylinder, 53 ...
Saw cylinder, 54 needle, 55 saw blade, 56 paper guide,
57 ... Nipping roller, F, F '... Frame, W ...
Continuous paper, W ': paper at the beginning of the continuous paper.

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-3-172282 (JP, A) JP-A-3-8662 (JP, A) JP-A-3-97451 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) B65H 45/28 B26D 1/40 502 B41F 13/56

Claims (2)

(57) [Claims] 1. A continuous paper fed between a folding cylinder and a saw cylinder has its leading end held on the outer peripheral surface of the folding cylinder, is drawn along the outer peripheral surface of the folding cylinder by rotation of the folding cylinder, and has a predetermined length. In a folding device that cuts the paper downstream of the cutting position in parallel with the axis of the folding cylinder, the lower part of the gap between the folding cylinder and the saw cylinder is closed along the outer surface of the folding cylinder. A position where the continuous paper that is fed in between and drawn in along the outer peripheral surface of the folding cylinder and the lower part of the gap between the folding cylinder and the saw cylinder are opened, and the continuous paper that is fed between the two cylinders is cut. Guide means movably provided between a position at which the guide means can be dropped, a guide displacement driving means connected to the guide means and moving the guide means between the two positions, a folding cylinder and a saw cylinder Receiving means for receiving the cut paper falling below the gap between the folding cylinder and The paper that is cut while being fed between the cylinders and not held on the outer peripheral surface of the folding cylinder and cut parallel to the axis of the folding cylinder is dropped below the gap between the folding cylinder and the saw cylinder and received. Discharge device for a folding device, wherein the discharge device is provided so as to be capable of being provided. 2. The discharging device of a folding device according to claim 1, wherein the receiving means is a conveyor, and the received paper can be carried out of the apparatus.