JPH0649573Y2 - Folding machine for rotary printing press - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a folding machine attached to a web-fed rotary printing press for cutting and folding a printed web into a predetermined size, and more particularly to a folding machine capable of parallel double-folding. Is.

[Conventional technology]

The web-fed rotary printing machine is equipped with a folding machine that cuts the dried and cooled web after printing and folds it in the width or length direction. For one side, the web before cutting is folded in half in the width direction with a foma, the folded part after cutting is parallel folded in the length direction with an origami cylinder, and the folded signature is cut with a chiupa. There are two types of folding, which are half-folding at right angles. These folding methods are selected and used alone according to the specifications of the signature, or some of them are combined.

As described above, the folding machine is provided with the former for the folding, the group of origami cylinders for the parallel folding, and the folding device for the folding folding in this order, but due to the diversification of printing in recent years, the folding folding is performed in parallel. There is a demand for parallel double bending to fold objects in the same direction and to fold them into four, and a folding machine has been developed that enables parallel 1 bending and parallel 2 bending with one machine. The parallel two-fold bending device is roughly configured as follows. First of all, in the case of one parallel bend, after holding the cutting cylinder, the folding cylinder and the signature half-folded by the gripper cylinder by the gripper plate of the gripper cylinder and changing it to the nail of the reduction cylinder, etc., When the sheet is conveyed to the sheet discharging device, the parallel two-fold bending is performed by deactivating the holding plate and the claw. That is, when the gripper cylinder is the first gripper cylinder, a second gripper cylinder is located downstream of and in contact with the first gripper cylinder in addition to the speed reducer cylinder. An insert knife and a gripping plate are provided on the body so as to face each other. Then, it is held by the holding plate of the first gripping cylinder to make contact with the reduction cylinder and the second
The parallel fold signature that passes through the counter contact point with the gripper cylinder has the insertion knife and the gripper plate at the center part of this signature when the center part reaches the counter contact point with the second gripper cylinder. Opposite each other, the signature is clamped by the gripper plate by its operation, and is folded in half. The signature folded in parallel twice in this way is released from the grip of the gripper and discharged.

In such a parallel two-fold bending device, when the second holding cylinder is held by the holding plate and is conveyed, the parallel one-fold signature has only the center holding the holding plate. Both pieces other than the end are not held, and one piece in particular moves suddenly in the opposite direction after gripping, so it is easy to flap or wavy, which may cause the signature to be soiled or torn. I was crying.

Therefore, conventionally, an arc-shaped guide plate is provided in the vicinity of the rotary discharge portions of the first and second gripper cylinders, and one piece of parallel double-folded signatures is carried by being clamped by the gripper plate. The guide plate is slidably contacted with the guide plate for guiding.

[Problems to be solved by the invention]

However, since such a conventional signature guide slides one piece of a signature that is conveyed at high speed as described above, the print surface is easily rubbed and dirty or scratched. There was a retention problem.

[Means for solving problems]

In order to solve such a problem, according to the present invention, a brush roller rotatably supported on the machine frame side is provided in the rotary discharge side space of the first and second gripping cylinders. The flocked ends are arranged so as to face each other around the circumference of the body,
An adjusting mechanism is provided for adjusting the distance between the brush roller and the first gripping cylinder and between the brush roller and the second gripping cylinder.

[Action]

The signature, which was folded once in parallel and then held by the holding plate of the first gripper, was conveyed while being attached to the peripheral surface of the cylinder. The center of the signature is a pair of first and second gripper cylinders. When reaching the contact point, the center part is held by the holding plate of the second holding cylinder and folded in half, and conveyed while being attached to the peripheral surface of the second holding cylinder. During the period from the grip to the conveyance, one piece of the signature is released from the grip of the first gripper side gripping plate and becomes in the non-holding state, but the brush roller is attached to this signature piece. Since the flocked ends are rotated while being in slight contact, the printing surface of the signature and the brush rollers do not move relative to each other and rubbing does not occur. Further, the contact pressure of the brush-implanted end of the brush with respect to the signature can be appropriately maintained by the adjusting mechanism.

〔Example〕

1 to 3 show an embodiment of a folding machine according to the present invention. FIG. 1 is a side view of the vicinity of a brush roller, FIG. 2 is a front view of the same, and FIG. Fold parallel 2
FIG. 3 is a cylinder array diagram of a double-fold machine.

In FIG. 3, a parallel folding device 2 for cutting and folding the web 1 into a predetermined size is provided in the traveling direction of the web 1 which is cooled and dried and guided to the paper input portion of the folding machine. The folding device 2 includes a cutting cylinder 3, a folding cylinder 4, a clamping cylinder 5, a second clamping cylinder 6, a reduction cylinder 7, and upper and lower transfer cylinders 8 and 9 which rotate in a direction indicated by an arrow in the figure. Among them, the cutting cylinder 3 and the folding cylinder 4 are provided with a plurality of needles arranged in parallel with a cutting blade 10 for cutting the web 1 in predetermined dimensions and abutting it on the lower half peripheral surface of the folding cylinder 4. 11 and 2 in the circumferential direction on the circumference of both bodies 3 and 4
They are arranged at equal positions so as to face each other. Also,
On the outer peripheral portion of the folding cylinder 4, two rows of insertion knives 12 are provided which are arranged in parallel in the axial direction and are set at a substantially middle position in the circumferential direction of both needles 11, On the other hand, at a position where the circumferential surface of the gripper cylinder 5 is divided into two equal parts in the circumferential direction, a gripping plate 13 which is parallel to the axial direction and constitutes a set is disposed so as to face each of the insertion knives 12. Has been done. Further, at a position where the circumferential surface of the gripper cylinder 5 is divided into two equal parts in the circumferential direction, two rows of insertion knives 14 that are parallel to each other in the axial direction and make one set, rotate the cylinder more than the gripper plate 13. It is arranged at a position that lags approximately 45 ° with respect to the direction, and is parallel to the axial direction at a position where the circumferential surface of the second gripping cylinder 6 for parallel bi-folding is bisected in the circumferential direction. Two rows of gripping plates 15 each including a plurality of sets are arranged so as to face each of the insertion knives 14. The cylinders 3, 4, 5 and 6 described above have the same diameter and rotate at the same peripheral speed.

The reduction cylinder 7 has a diameter of about 1.5 times that of the gripping cylinder 5, and a plurality of groups arranged in parallel in the axial direction form a set at positions at which the peripheral surface thereof is divided into four substantially in the circumferential direction. A gripping claw 16 (hereinafter, simply referred to as a claw 16) including a row of claws and a claw base is provided. By setting the peripheral speed of the reduction cylinder 7 to be lower than the peripheral speed of the clamping cylinder 5, Even if there is a difference in the number ratio of the holding plate 13 and the claw 16 and the diameter ratio of the two cylinders, the holding plate 13 and the claw 16 are configured to face each other. Further, the upper and lower transfer cylinders 8 and 9 have the same diameter as the reduction cylinder and rotate at the same peripheral speed, and a plurality of shafts arranged in parallel in the axial direction are bisected in the circumferential direction. Holding jaws 17 and 18 (hereinafter abbreviated as nails 17 and 18), which are made up of two pairs of nails and a nail base, are provided at positions opposed to the nails 16 by rotation. Further, on the downstream side of each of the transfer cylinders 8 and 9, there is provided a tipper device via a conveyor belt (not shown).

With such a configuration, in the case of a single parallel bend, after the holding plate 13 and the claw 16 are activated, the cylinders rotate and the web 1 cuts the cutting cylinder 3 and the folding cylinder 4. When the web 1 is fed between the cutting line and the cutting line, the web 1 is cut by a cutting blade 10 to a predetermined size, and the web 1 following the cutting line is needled.
It is held by 11 and wound around the lower half peripheral surface of the folding cylinder 4, and the trailing edge of the paper is cut by the cutting blade 10 in the same manner as described above. When the cutting web held by the needle 11 is wound around the folding cylinder 4 until the central portion in the lengthwise direction reaches the contact points of the two cylinders 4 and 5, the insertion knife 12 and the gripping plate 13 face each other. Therefore, the center of the cutting web is clamped by the clamping plate 13 by the cooperation of the insertion knife 12 and half-folded, and is joined to the upper peripheral surface of the clamping cylinder 5 while forming a signature. This half-folded signature is from the support plate 13 to the reduction cylinder 7
After being replaced with the nail 16 of the lower body, first, the nail 18 of the lower transfer body 9
Is transferred to the next signature, and the claw 17 of the upper transfer cylinder 8 is clamped and transferred to the next signature to follow. In this way, the signatures alternately conveyed by the upper and lower transfer cylinders 8 and 9 are discharged onto the conveyor belt and alternately conveyed to the upper and lower checker devices to be folded, or passed through the checker devices. The paper is ejected as a single folded parallel signature. The gripping portion between the gripping plate 13 and the claw 16 is provided with a feed roller 19 and the like for ensuring gripping, but detailed description thereof will be omitted.

Therefore, the parallel two-fold device will be described in more detail. As described above, the pair of insert knives 14 and the gripping plates 15 are arranged on the first and second gripping cylinders 5 and 6 so as to face each other at two equal positions in the circumferential direction. It is installed, and when the center of the half-folded signature held by the holding plate 13 of the first holding cylinder 5 reaches the counter contact point of the two cylinders 5, 6, the insertion knife 14 and the holding plate 15 The phases are set so as to face each other. Then, when the holding plate 15 is opened and closed at this position and the insertion knife 14 is moved back and forth, the center portion of the half-folded signature is held by the holding plate 15 and further half-folded. Figure 1 shows that after each half-fold,
5 and 6 are slightly rotated, and at the same time, the holding plate 13 of the first holding cylinder 5 releases the folded end of the half-folded signature 20 from the holding.

A plurality of brush rollers 27, which will be described below, are arranged in the rotary discharge side space portion 21 of both the drums 5 and 6. That is, the brackets fixed to the left and right frames 22 facing the space 21.
A pair of left and right arms 24 are fixed to the left and right arms 23 by the engagement of the long holes and the bolts so as to be movable and adjustable.
A brush shaft 25, which is parallel to the body shaft, is fixed and supported by bolts 26 between them. A plurality of brush rollers 27 are arranged side by side on the brush shaft 25 with a pair of collars 28 restricting movement in the axial direction. The brush rollers 27 are planted from the disc 27a and its peripheral surface. It is formed by a large number of flocked hairs 27b. The bristles 27b are almost in contact with the peripheral surfaces of the two cylinders 5 and 6, and as shown in FIG. 1, when the cylinders 5 and 6 rotate, the signature 20 slides on the brush roller 27 and rotates. It is configured to be conveyed while being carried.

The parallel two-fold bending operation of the folding machine configured as described above will be described. When the holding plates 13 and the claws 16 at the points facing the claws 16 are not opened / closed and each cylinder is rotated, the cutting cylinder 3, the folding cylinder 4, and the folding cylinder 4 and The signature 20 folded in parallel 1 by the gripper 5 is the gripper 13
It is conveyed by passing through the counter contact points of both cylinders 5 and 7, and is passed through the counter contact points of both cylinders 5 and 6 and is attached to the first clamp cylinder 5. When the center of the signature 20 reaches the counter contact point between the two bodies 5, 6, the insertion knife 14 and the gripping plate 15 face the center of the signature 20 and move forward and backward, respectively, so that the signature 20 The central portion of is pressed by the insertion knife 14 and held by the holding plate 15. The gripping plate 13 opens a moment earlier than this gripping to release the tip of the signature 20 from the grip, so that the signature 20 is half-folded as shown in FIG. 1 while being transported by the second gripping cylinder 6. Be started. At this time, since the brush rollers 27 make the flocked ends almost contact with the peripheral surfaces of both the trunks 5 and 6, the signatures 20 which are conveyed while being half-folded.
Is guided while slidingly contacting the brush roller 27 and rotating the brush roller 27. In this case, since the brush roller 27 rotates as the signature 20 travels, rubbing does not occur between the signature 20 and the peripheral surface of the brush roller 27, and the brush roller 27 is lightweight and has low rotation resistance and a small weight. Since the diameter is large, the signature 20 is not narrowed down significantly.

[Effect of device]

As is clear from the above description, according to the present invention, a folding machine capable of performing parallel double folding for performing the second parallel folding between the first and second gripping cylinders that are in contact with each other. , The brush rollers rotatably supported on the machine frame side are arranged in the space of the rotary discharge side of both gripping cylinders, with the flocked ends of the brush rollers almost facing the peripheral surface of both gripping cylinders. After folding twice in parallel, the brush roller is made lighter by arranging the signature that is carried by the gripping plate of the second gripper and is conveyed along this brush roller. Since the rotation resistance is small and the hair transplants while deforming the male as the signature runs, rubbing does not occur between the signature and the brush roller peripheral surface.
The printed surface of the signature is not contaminated or broken, and the amount of waste paper is reduced. In addition, since the brush roller has a large diameter for its weight and the signature will not be greatly squeezed,
The quality of the printed matter is improved without the signature being bent or wrinkled. Further, according to the present invention, since the adjusting mechanism for adjusting the distance between the brush roller and the first gripping cylinder and the distance between the brush roller and the second gripping cylinder is provided, the contact pressure of the brush-implanted end with respect to the signature is adjusted. Therefore, it is possible to cope with the wear of the flocked hair and the change in the thickness of the signature, and it is possible to always maintain an appropriate contact pressure.

[Brief description of drawings]

1 to 3 show a folding machine of a rotary printing press according to the present invention. FIG. 1 is a side view near a brush roller, FIG. 2 is a front view of the same, and FIG. 3 is a parallel view of the present invention. It is a trunk | drum arrangement figure of the machine for which 1 turn and 2 parallel turns are combined. 1 ... Web, 2 ... Parallel folding device, 5 ... First gripper,
6 ... second gripper, 13 ... gripper plate, 14 ... insert knife,
15 …… Holding plate, 20 …… Signature, 21 …… Rotating discharge side space, 22 …… Frame, 23 …… Bracket, 24 …… Arm, 25 …… Brush shaft, 27 …… Brush roller, 27a ... disc, 27b ... flocked.

Claims (1)

[Scope of utility model registration request] 1. A first gripping cylinder and a second gripping cylinder whose circumferential surfaces are in contact with each other.
It is equipped with a gripper and is held by the gripper plate of the first gripper first
The second part is the central part of the parallel signature attached to the peripheral surface of the gripper.
In a folding machine of a rotary printing press which is held by the holding plate of the gripper cylinder to make a second parallel fold, in the rotary discharge side space portion of the both gripper cylinders, freely rotatable to the machine frame side. Equipped with supported brush rollers, the brush rollers are arranged almost in contact with the peripheral surfaces of both gripper cylinders, and are clamped by the gripper plate of the second gripper cylinder to perform the second parallel folding. In addition to providing the bristles for guiding the front half of the first half-folded signature, which is attached to the peripheral surface of the first gripper, to the second gripper, the brush roller and the A folding machine for a rotary printing press, comprising a first gripping cylinder and an adjusting mechanism for adjusting a distance between a brush roller and a second gripping cylinder.