JPH0643091Y2 - Folding machine for rotary printing press - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a folding machine attached to a web-fed rotary printing press to cut and fold a printed web into a predetermined size, and particularly, a single folding and parallel twice. The present invention relates to a folding machine capable of folding and origami.

[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 direction or the length direction. For folding, the web before cutting is folded in half in the width direction with a foamer, and the folded signature is folded in half or four in the length direction with an origami cylinder. There are two folds, and a folding method in which a folded signature is folded in half in the orthogonal direction with a fastener. These folding methods are selected according to the specifications of the signature and used independently. Some of them are combined.

As described above, the folding machine is provided with the formater for the folding, the group of origami cylinders for the parallel folding, and the sorting device for the folding folding in this order. A folding machine has been developed which enables parallel one-fold and parallel two-fold, and this type of folder is generally configured as follows. That is, in addition to the conventionally well-known group of parallel folding cylinders including a cutting cylinder, a folding cylinder, and a holding cylinder,
It is equipped with a speed reduction cylinder and a second suction cylinder, which are in contact with the suction cylinder,
The holding cylinder and the reduction cylinder are provided with a holding plate and a claw for changing the signatures of each other. In addition, between the holding body and the second holding body,
An insert knife and a gripping plate are provided which cooperate with each other to fold the parallel folded part in half. In the case of parallel bending once, when the gripper plate and the claw are activated and each cylinder is rotated, the signature folded once in parallel is clamped from the gripping plate to the claw and decelerated. After being conveyed by the cylinder, it is conveyed by the upper and lower transfer cylinders and the conveyer conveyor to the tipper device or directly to the sheet discharge device alternately. In addition,
Since the mechanism cannot make it high speed, the peripheral speed of the reduction cylinder is made slower than the peripheral speed of the cylinder, the feeding speed to the checker device is made slower, and two lines of the conveying path after the reduction cylinder and the checker device are provided. This is dealt with by alternately feeding the upper and lower chips.

Also, in the case of one-fold parallel bending, when the gripper plate of the gripper cylinder and the claw of the speed reducer cylinder are deactivated, the signatures carried by the gripper plate of the gripper cylinder are conveyed. It passes through the counter contact points between the transfer cylinder and the reduction cylinder and is wound around the support cylinder, and is parallel to the second support cylinder.
It will be folded.

In this way, the conveying path of the signature is switched between the path from the gripper cylinder to the speed reducer cylinder and the path around which the gripper cylinder is wound, depending on whether it is a single bend or a double bend. And when going from the gripping cylinder to the decelerating cylinder, there is a difference in peripheral speed between the two cylinders and it is not possible to change the grip, so a separate signature is provided to release the grip from the gripping plate. It is performed by feeding it out with a high-speed rotating feed roller, hitting it against a pad on the side of the reduction cylinder, and holding it by a pawl with the relative speed to the reduction cylinder being zero.

[Problems to be solved by the invention]

However, in such a conventional folding machine, there is a problem in folding a signature at the contact point between the gripping cylinder and the reduction cylinder in the above-mentioned parallel 1-fold and parallel 2-fold.
In other words, in the case of one-fold parallel bending, when the tip of the signature fed to the speed reduction cylinder side by the feed roller hits against the deceleration cylinder side and is clamped by the claw, the rest of the signature is not held. , The course became unstable, and there was a risk of getting caught. Also, in the case of two parallel folds, the bottom of the signature, which is held by the holding plate of the gripper and heads to the contact point with the second gripper, is released from the feed roller and then retained. As a result, I was sometimes caught up on the side of the speed reducer.

[Means for solving problems]

In order to solve such a problem, in the present invention, a shaft which can be rotated from the outside of the frame is extended in the cylinder axial direction in the rotary discharge side space of the first gripping cylinder and the reduction cylinder. A plurality of signature guides, which are connected to the shaft by a ring and whose front end faces the annular groove of the outer peripheral surface of the reduction cylinder, are arranged in parallel in the axial direction and are advanced and retracted by the rotation of the shaft.

[Action]

In the case of one parallel bend, when the shaft is rotated by an operation from the outside of the frame, a plurality of signature guides move forward in the annular groove through the link to the upstream side of the rotation, and the signature guides toward the reduction cylinder. Is guided between the signature guide and the peripheral surface of the reduction cylinder. Also, parallel 2
In the case of folding, when the shaft is rotated in the opposite direction by an operation from the outside of the frame, the plurality of signature guides retracts in the annular groove toward the downstream side through the link and the second gripper cylinder. The signature that faces the side is blocked from contact with the peripheral surface of the reduction cylinder by the signature guide.

〔Example〕

1 to 4 show an embodiment of a folding machine according to the present invention. FIG. 1 is a side view in the vicinity of a contact portion between a first gripping cylinder and a reduction cylinder, and FIG. A front view as seen from A, FIG. 3 is a front view of a rotating operation portion of a shaft, and FIG. 4 is a cylinder arrangement diagram of a folding machine. In FIG. 4, after printing, 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 sheet input portion of the folder. The parallel folding device 2 includes a cutting cylinder 3, a folding cylinder 4, a gripping cylinder 5, a second gripping cylinder 6, a speed reducing cylinder 7, and upper and lower transfer cylinders 8 and 9 which rotate in a direction indicated by an arrow in the figure. There is. 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 is delayed by about 45 ° with respect to the direction, and the circumferential surface of the second gripper cylinder for parallel two-fold bending is circumferentially divided by two.
Two rows of gripping plates 15 each of which is parallel to each other in the axial direction and which constitute one set are arranged facing the insertion knives 14 at equal positions. 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
Then, the next signature to be followed is clamped by the claw 17 of the upper transfer cylinder 8 and conveyed. 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.

Further, in the case of the parallel two-fold, after the holding plate 13 and the claw 16 are made inactive, when the respective cylinders rotate, they are bent once in the parallel manner and conveyed by the holding plate 13. The folded signature passes through the opposite contact points of both bodies 5 and 7, and also through the opposite contact points of both body 5 and 6. When the center of the signature reaches the counter contact point between the two bodies 5, 6, the insertion knife 14 and the gripping plate 15 face each other, and the center of the signature is clamped by the gripping plate 15. Since it is conveyed while being folded, it is ejected as a parallel double-folded signature.

Among such folding operations, in the case of one-fold parallel bending,
As described above, the half-folded signature includes the grip plate 13 to the claw of the reduction cylinder 7.
It can be changed to 16, but in order to make this change smooth regardless of the peripheral speed difference between both cylinders 5 and 7, a paper feeding device and a signature guide described below are provided. .

That is, a pair of arm shafts 21 is provided between the left and right frames 20.
Is rotatably supported by bearings near the upper peripheral surface of the first gripping cylinder 5 via a bearing, and is rotationally driven from the driving side by a gear device (not shown) outside the frame. This arm axis
A pair of left and right arms 22 are rotatably supported on the boss portion of the bearings of both ends 21 so as to be restricted from moving in the axial direction, and a roller shaft 23 is provided between the free ends of the arms 22 in the axial direction. Is rotatably supported and is rotatably supported. The arm shaft 21 and the shaft 23 are drivingly connected to each other by a gear (not shown). twenty four
Is a plurality of feed rollers fixed in parallel on the roller shaft 23 at a predetermined interval, and the feed roller 24 is an annular roller base 24a fixed to the roller shaft 23 and forming a small diameter portion of the entire roller. The roller 24b is formed in a fan shape and becomes a large diameter portion of the entire roller, and the roller 24b is bolted to the roller base 24a. The feed roller 24 is driven by the gear device and is configured to rotate once together with the roller shaft 23 every time one signature is conveyed. Further, 25 is a pair of air cylinders pivotally attached to the left and right frame 20 sides, and the working ends of the piston rods 26 thereof are pivotally attached to the free ends of the arms 22, respectively. The feed rollers 24 are configured to be attached to and detached from the peripheral surface of the first gripping cylinder 5 by operating in synchronization. Reference numeral 27 is a stopper that is screwed into a stud 28 on the frame 20 side and regulates the rotation limit of the arm 22 in the direction in which the feed roller 24 contacts the body circumferential surface. With this configuration, the piston rod 26 of the air cylinder 25 is moved forward to bring the roller 24b of the feed roller 24 into contact with the peripheral surface of the first gripping cylinder 5, and the feed roller 24 is folded while being rotationally driven. When the work is performed, the signature released from the grip of the gripping plate 13 is fed by the feed rollers 24 into the space between the circumferential surfaces of the two bodies 5, 7. It should be noted that a gap of about 2 mm indicated by a symbol t in FIG. 1 is formed between the peripheral surfaces of the two bodies 5, 7. Further, a gap of about 2 mm shown by reference numeral t ₁ in FIG. 1 is also formed between the peripheral surfaces of the two bodies 5, 6.

An operation shaft 30 is rotatably supported in the left and right frame 20 side bearings in the rotary discharge side space of both bodies 5 and 7 so as to be close to the reduction cylinder 7 side. A link 31 is split and fixed to the section. On the other hand, the left and right frames
A rectangular slide guide 32 having a U-shaped cross section is bolted to the inner surface of the bolt 20 diagonally above and adjacent to the operating shaft 30. The slide guide 32 slides in the tangential direction of the first gripper cylinder 5. A square top 33 is slidably fitted in the groove 32a of the guide 32. Reference numeral 34 denotes a guide support shaft extending parallel to the body shaft, both end shafts 34a of which are fitted in the circular arc of the top 33, and a hole at one end thereof is rotatably fitted in the end shaft 34a. The other end of the separated link 35 is pivotally attached to the free end of the link 31 by a pin 36. On the guide support shaft 34,
Multiple signature guides 37 made of plate material in a tapered shape
Are juxtaposed in parallel with each other, and on the other hand, an operating lever 39 having a handle 38 which is rotatable between a solid line and a chain line in FIG. It is worn. Numerals 40 and 41 are stoppers for restricting both rotational ends of the operating lever 39. Further, a compression coil spring (not shown) for urging the handle 38 toward the frame 20 is interposed between the handle 38 and the boss portion 39a of the operation lever 39 which slidably supports the shaft portion thereof. , The handle 38 is pulled against the spring force and the operating lever 39 is rotated to release the hand at the end of the rotation, so that the shaft end of the handle 38 is inserted into the hole provided on the frame 20 side. Thus, the rotation is locked. The operation shaft 30 is rotated by the rotation operation of the operation lever 39, and the signature guide 37 slides the top 33 in the groove 32a through the links 31 and 35, and the solid line position and the chain line position in FIG. It is configured to move back and forth between. That is, a plurality of annular grooves 5a are provided on the outer peripheral portion of the first gripper cylinder 5 in correspondence with each signature guide 37,
The signature guide 37 is located in the annular groove in the forward position indicated by the solid line.
It is engaged by 5a and guides the signature to the reduction cylinder 7 side. Further, the signature guide 37 guides the signature to the first gripping cylinder 5 side at the retracted position shown by the chain line. Further, on the peripheral surface of the reduction cylinder 7, a plurality of pads 42 for abutting the tip of the signature fed along the signature guide 37 by the feed roller 24 are arranged in the axial direction and are arranged in the circumferential direction with the claw 16. It is provided in the same phase.
Further, the base of the signature guide 37 is also in the same phase as the pad 42 in the circumferential direction, but since the respective members 42, 16, 37 are out of phase in the axial direction, they do not interfere with each other.

With the above-described structure, in the case of parallel bending once, when the operation lever 39 is pivotally operated to the solid line position in FIG. 3 and locked, the signature guide is provided via the links 31 and 35. 37
While sliding the sliding frame 33 in the groove 32a, it advances to the position indicated by the solid line in FIG. 1 and engages in the annular groove 5a. Also, air cylinder
The piston rod 26 of 25 is moved forward to activate the feed roller 24. When the folding operation is started in this way, the signature folded in parallel by the cylinders 3, 4 and 5 is held by the holding plate 13 of the first holding cylinder 5 and its holding end is fed by the feeding roller 24. Reach in front of. At this time, the feed roller 24 is rotationally driven from the prime mover side, and the roller base 24a, which is a small diameter portion, faces the signature until the gripping plate 13 holding the signature passes through the feed roller 24 and ends. . Then, when the edge of the signature has passed through the feed roller 24, the roller 24b, which is the large-diameter portion, begins to face the signature, and the signature plate 13 opens a moment later than this and the signature is clamped. Since the signature becomes free, it is sent by the contact pressure of the roller 24b toward the opposite contact points of the two cylinders 5 and 7, and the friction between the peripheral surface of the reduction cylinder 7 and the friction between the signature guide 37 causes It is fed while being decelerated, and the tip comes into contact with the contact 42. That is, the leading edge of the signature gently abuts against the pad 42 due to deceleration, so that it is not damaged. Further, since the signature guide 37 is positioned so as to form a gap as an extension of the gap t between the signature guide 37 and the peripheral surface of the reduction cylinder 7, the signature is guided correctly and abuts against the pad 42. The feed roller 24 ends contact with the roller 24b for a moment immediately before the signature abuts against the signature 42, and the roller base 24a faces the paper edge of the signature to release the contact with the signature 42. Simultaneously with the contact with, the pawl 16 of the reduction cylinder 7 closes and the tip of the signature is held. The operation after this is the same as that described above, and a description thereof will be omitted.

Next, in the case of two-fold parallel bending, the operating lever 39 is pivoted to the chain line position in FIG. 3 and locked, and the signature guide 37 is retracted to the chain line position in FIG. 1 via the links 31 and 35. Then, the tip end is attached to the reduction cylinder 7 side. Further, the piston rod 26 of the air cylinder 25 is retracted to deactivate the feed roller 24, and the gripping plate 13 and the claw 16 are prevented from opening and closing at their opposing positions. When the folding operation is started in this way, after parallel folding, the signature held by the gripping plate 13 passes through the floating feed rollers 24 and both the cylinders 5, 7 that have been stopped from opening and closing.
It goes through the counter contact point of and goes to the counter contact point of both bodies 5, 6. At this time, since the signature guide 37 blocks the gap between the signature and the peripheral surface of the speed reduction cylinder 7, the paper tail is properly guided to the first gripping cylinder 5 side without being caught in the speed reduction cylinder 7 side. Guided and transported. When the signature is conveyed, the gripping edge passes through the contact points of both cylinders 5 and 6, and when the center of the signature reaches the contact point of both cylinders 5 and 6, it is clamped by the clamp plate 15 When it is folded, it becomes two parallel folds.

[Effect of device]

As is apparent from the above description, according to the present invention, in the folding machine of the rotary printing press, the shaft which is rotatably operable from the outside of the frame is provided in the rotary discharge side space of the first gripping cylinder and the reduction cylinder. Direction, and a plurality of signature guides, which are connected to the shaft by a link and have their tips facing the annular groove of the outer peripheral surface of the reduction cylinder, are arranged side by side in the axial direction and By making it move forwards and backwards, the signature guide moves forward by an operation from the outside of the frame when it bends once in parallel, and it is affixed to the side of the first jaw.
Since a predetermined gap is formed between the signature guide and the peripheral surface of the speed reduction cylinder, the part other than the gripping edge of the signature will be properly guided by the signature guide without fluttering, and there will be no damage. Does not occur. Also, when folding in parallel twice, the signature guide moves backward from the frame and is attached to the speed reduction cylinder side to block the gap between the signature and the peripheral surface of the speed reduction cylinder, so the signature faces the speed reduction cylinder side. Without being conveyed, it is correctly attached to the first gripping cylinder and conveyed, and the amount of waste paper is reduced. Further, the signature guides can be easily switched from the outside of the frame between the one-fold parallel bending and the two-fold parallel bending, and the operability is extremely good.

[Brief description of drawings]

1 to 4 show an embodiment of a folding machine of a rotary printing press according to the present invention. FIG. 1 is a side view near a contact portion between a first gripping cylinder and a reduction cylinder, and FIG. 1 is a front view of FIG. 1, FIG. 3 is a front view of a rotary operation portion of a shaft, and FIG. 4 is a cylinder array diagram of a folding machine. 5 ... 1st holding cylinder, 5a ... annular groove, 6 ... 2nd holding cylinder,
7 ... Reduction cylinder, 13,15 ... Holding plate, 16 ... Claw, 20 ... Frame, 30 ... Operation axis, 31,35 ... Link, 32 ... Slide guide, 33 ... Top, 34 …… Guide support shaft, 37 …… Folder guide, 38 …… Handle, 39 …… Operating lever.

Claims (1)

[Scope of utility model registration request] 1. A signature path having a speed reducing cylinder facing a first gripping cylinder and a second gripping cylinder, and the signature of the signature being conveyed alongside the first gripping cylinder. In a folder for a rotary printing press, which is configured to selectively switch between the speed reducing cylinder side and the second gripping cylinder side, a plurality of annular grooves are provided on the peripheral surface of the first gripping cylinder.
And, in the rotary discharge side space portion of the first holding cylinder and the reduction cylinder,
A shaft that can be rotated from the outside of the frame is mounted parallel to the body shaft, and the shaft is connected by a ring, and the rotation of this shaft advances and retracts the tip end toward the annular groove for conveyance. A folding machine for a rotary printing press, comprising a plurality of signature guides for selectively abutting a signature on the reduction cylinder and the second gripping cylinder.