JPH0475967A - Folding machine - Google Patents

Abstract

PURPOSE:To apply one folding machine for pinless folding and parallel folding by rotating a cutting barrel to both directions with the operation of clutches to select either cutting operation between the cutting barrel and a cutting edge rest barrel or parallel bending between a bending barrel and a biting barrel. CONSTITUTION:When a web 49 is pinless-folded, the first clutch 71 and the second clutch 72 are put in contact with each other to rotate a drive gear 61, so that the web 49 is guided to a guide roller 50, cut in preset lengths at a place where the cutting edge 44 of a cutting barrel 42 and the cutting edge rest 59 of a cutting edge rest barrel 43 are opposite to each other, guided via a speed increasing belts 47, 48 and sent to a discharge device. For parallel folding, the third clutch 73 and the for the clutch 74 are in contact with each other to rotate the gear 61, so that the web 49 is guided to the second lead roller 51 and cut in preset sizes by the cutting edge 44, when another web 49 following a cutting line is held by a pin 53, wound around the semi-circular face on the lower side of a folding barrel 52 and cut by the cutting edge 44. Then, the web 49 is nipped by a nipping plate 56, put aside in contact with the circular face on the upper side of the nipping barrel 55 while being half- folded into a folded form and sent to the discharge device.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a folding machine attached to a rotary printing press.

<Prior Art> A paper roll printing press is equipped with a folding machine that cuts the dried and cooled web into predetermined lengths after printing, and folds the web in the width direction or length direction. . The folding methods using this folding machine include former folding, in which the web before cutting is folded in half in the width direction with a former, and parallel folding, in which the cut signature is folded in half lengthwise or into quarters with an origami cylinder. There are two types of folding: one-time folding, two-fold parallel folding, and two-fold folding, in which a parallel-folded signature is folded in half in the perpendicular direction at the chisel collar, and these folding methods are selected according to the specifications of the signature. They can be used alone or in combination.

A folding machine (binless folding machine) that performs cutting immediately after performing former folding will be explained based on FIG.

A cutting side 2 of a cutting device 1 and a blade receiving barrel 3 are rotatably supported on the lower side of a former (not shown) in contact with each other. Two cutting blades 4 are attached to the outer periphery of the cutting side 2 at positions dividing the blade into two in the circumferential direction, and two cutting blade holders 6 are attached to the outer periphery of the blade receiver 3 at positions dividing the blade into two in the circumferential direction. installed on. The cutting side 2 and the blade receiver 3 are driven and rotated in the direction of the arrow in the figure by driving means (not shown), and the cutting blade 4 on the cutting side 2 and the cutting blade receiver 6 of the blade receiver 3 are rotated at 18.
They are arranged to face each other every 0 degrees.

A pair of lead rollers 8 and 9 are rotatably provided above the cutting device 1 to fold the web 21 and feed the web 21 between the cutting side 2 and the blade receiving cylinder 3. Support rollers 10 and 11 are supported below the cutting device 1, and speed increasing belts 12 and 13 are wound around the support rollers 10 and 11, respectively. The signatures cut by the cutting device 1 are guided by speed increasing belts 12 and 13 and sent to a paper discharge device (not shown).

In the folding machine described above, the web 21 that has been folded in half in the width direction by a former (not shown) is sent between the cutting side 2 and the blade receiving cylinder 3 by the lead rollers 8 and 9, and the cutting blade 4 on the cutting side 2
The cutter is cut into a predetermined length at a position where the cutting blade receiver 6 of the blade receiver barrel 3 faces. The cut signature is speed-up Pel) 12, 13
is guided to the paper output device.

Next, a folding machine for folding in half (parallel folding) the stacked sheets in the length direction will be explained based on FIG. 6.

The parallel folding device 31 includes a cutting side 32, a folding cylinder 33, and a gripping cylinder 3.
4, which are rotatably driven in synchronization in the directions indicated by arrows in the figure.

Among these, a former 22 is provided on the cutting side 32 and the folding drum 33.
A cutting blade 36 that cuts the half-folded web 35 into predetermined dimensions and attaches it to the lower half circumferential surface of the folding cylinder 33 and a plurality of needles 37 parallel to each other in the axial direction are connected to both cylinders 32, 33. They are arranged facing each other at positions that bisect the circumferential surface of the cylinder into two equal parts in the circumferential direction. Furthermore, two rows of insertion knives 38 each having a plurality of insert knives 38 arranged in parallel in the axial direction are provided on the outer circumference of the folding drum 33 and are located approximately in the middle of both needles 37 in the circumferential direction. On the other hand, at a position that bisects the curved surface of the jaw barrel 34 into two in the circumferential direction, a jaw plate 39, which is made up of a plurality of plates arranged in parallel in the axial direction, is arranged facing each insertion knife 38. It is set up.

In the figure, reference numerals 23 and 24 are lead rollers that guide the web 35 folded in half by the former 22 between the cutting side 32 and the folding cylinder 33.

In the folding machine described above, the web 35 is separated from the cutting side 32 and the folding cylinder 33.
When the web 35 is fed in between, the cutting blade 36 cuts the web 35 into predetermined dimensions, and the web 35 following the cutting line is held by the needle 37 and is cut on the lower semicircular surface of the folding drum 33. The tail end of the paper is cut by the cutting blade 36 in the same manner as above.
It is cut with The cutting web held by the needle 37 is wound around the folding cylinder 38 until the central part in the longitudinal direction reaches the point of contact between the folding cylinder 33 and the gripping cylinder 34, and then the insertion knife 38
8 and the gripping plate 39 face each other, the center of the cut web is gripped by the gripping plate 39 by the cooperation of the insertion knife 38 and folded in half to form a signature, which is placed on the upper side of the gripping body 34. and is sent to a paper discharge device (not shown).

The above-mentioned folding machines are different from each other, and are used appropriately depending on the type of signature.

<Problems to be solved by the invention> In recent years, there has been a demand for space saving in factories and for the production of a wide variety of products using one machine, and even for printing presses, one folding machine can fold in various ways. It has become desirable to be able to obtain Ding. However, with current folding machines, by increasing the number of insertion knives and gripping plates, and increasing the number of gripping cylinders, it is possible to achieve a certain degree of diversification in terms of the number of parallel folds and overlapping folds; Regarding folds, the route of the web became complicated and it was difficult to share the folding machine. A cutting blade provided with a blade, a blade receiving barrel provided facing each other for cutting and provided with a cutting blade holder, and a needle provided facing each other for cutting and provided with a cutting blade holder and holding signatures. a folding cylinder provided with a folding cylinder, a gripping cylinder provided opposite to the folding cylinder for receiving the signatures held on the folding cylinder and performing parallel folding, a driving source for driving cutting, and a driving source for driving the driving source. a first power transmission mechanism that drives and rotates the cutting device in one direction and cuts off the driving of the folding cylinder and the jaw cylinder to cut the folded sheets between the blade receiving cylinder; It is characterized by comprising a second power transmission mechanism that drives and rotates the cutting device in the other direction, cuts off the drive of the blade receiving cylinder, and performs parallel folding of signatures between the folding cylinder and the gripping cylinder. .

Function> By transmitting the drive of the drive source to the first power transmission mechanism,
The cutting cylinder is driven to rotate in one direction, and the driving of the folding cylinder and the gripping cylinder is cut off, and the signatures are cut between the cutting cylinder and the blade receiving cylinder.

By transmitting the drive of the drive source to the second power transmission mechanism,
At the same time as the cutting blade rotates in the other direction, the driving of the blade receiving cylinder is cut off, and the signatures are folded in parallel between the cutting cylinder, the folding cylinder, and the gripping cylinder.

Embodiment> FIG. 1 shows a side row state of a folding machine according to an embodiment of the present invention;
FIG. 2 shows the arrangement state of the drive system, and FIGS. 3 and 4 show the developed state of FIG. 2.

As shown in FIG. 1, a lead roller 40 is provided below the former 41, and below the lead roller 40, a cutting member 42 and a blade receiving cylinder 43 are rotatably supported in contact with each other.

Two cutting blades 44 are provided on the outer periphery of the cutting blade 42 in the cutting direction.
It is installed at equally divided positions, and the outer periphery of the blade receiving barrel 43 has two
Two cutting blade receivers 59 are attached at positions dividing the blade into two in the circumferential direction.

The rotational phases of the cutting blade 42 and the blade receiver 43 are such that the cutting blade 44 and the cutting blade receiver 59 face each other every 180 degrees.

A support roller 45 is provided below the cutting 42 and the blade receiving cylinder 43,
46 is supported, and speed increasing belts 47 and 48 are wound around the support rollers 45 and 46. Also, the lead roller 4
A guide roller 50 for guiding the web 49 between the cutting member 42 and the blade receiving cylinder 43 is provided at the lower part of the cutting member 0 .

On the other hand, a second lead roller 5 is provided below the lead roller 40.
1 for cutting is provided below the second lead roller 51.
A folding cylinder 52 is rotatably supported in opposition to 2. The diameter of the folding drum 52 is twice that of the cutting drum 42, and a plurality of needles 53 having a cutting blade receiving function arranged in parallel in the axial direction are attached to the outer circumference of the folding drum 52 at positions dividing the needle into two in the circumferential direction. It is being

Furthermore, two rows of insertion knives 54 each having a set of several pieces arranged in parallel in the axial direction are provided on the outer circumferential portion of the folding drum 52 and are located approximately in the middle of both needles 58 in the circumferential direction. ing.

A gripping cylinder 55 having the same diameter as the folding cylinder 52 is rotatably supported in opposition to the folding cylinder 52, and a plurality of gripping cylinders 55 arranged in parallel in the axial direction are arranged in positions that bisect the curved surface of the gripping cylinder 55 into two equal parts in the circumferential direction. A pair of gripping plates 56 are provided facing each insertion knife 54.

As shown in FIG. 2, a driving gear 61 driven by a drive source (not shown) meshes with a blade receiving barrel gear 63 that is integrated with the blade receiving barrel 43 via a first gear 62, and the blade receiving barrel gear 63 is used for cutting. 44 and is meshed with a cutting gear 64 that is integrated with the cutting gear 64. - On the other hand, the drive gear 61 meshes with a folding drum gear 67 that is integrated with the folding drum 52 via a second gear 65 and a third gear 66.
7 is meshed with a jaw barrel gear 68 and a cutting mesh wheel 64 which are integrated with the jaw barrel 55.

That is, when the rotation of the drive gear 61 is transmitted to the first gear 62 and the blade receiver gear 63, the cutting gear 64 rotates in one direction (indicated by the solid arrow in the figure), and the rotation of the drive gear 61 is transmitted to the second gear. 65, when the cutting gear 64 is transmitted through the third gear 66 and the folding barrel gear 67, the cutting gear 64 rotates in the other direction (indicated by the dotted line arrow in the figure).

As shown in FIGS. 3 and 4, the first gear 62, the second gear 65, and the folding barrel gear 67 are a pair of gears 62m, 62.
b, 65 a, 65 b, 67 a.

67b, and a first clutch 71, a third clutch 73, and a fourth clutch 74 are interposed between each gear. Further, a second clutch 72 is interposed between the blade receiving barrel gear 63 and the blade receiving barrel 43. The first clutch 71 and the second clutch 72 are connected and disconnected at the same time, and the third clutch 73 and the fourth clutch 74 are connected and disconnected at the same time in a state opposite to that of the first clutch 71 and the second clutch 72. Ru.

That is, as shown in FIG. 3, when the first clutch 71 and the second clutch 72 are in the engaged state, the rotation of the drive gear 61 is transmitted as rotation in one direction to the cutting gear 64, and the rotation is transmitted to the cutting gear 67 and the jaw. When the rotation of the side gear 68 is cut off and the third clutch 73 and fourth clutch 74 are in the engaged state, the rotation of the drive gear 61 is transmitted as the rotation of the cutting gear 64 in the other direction, and the rotation of the blade receiving barrel gear 63 is transmitted. Rotation is blocked. The gears 62, 63, 64, 65, 66, 67 and the clutches 71, 72, 73, 74 constitute a first power transmission mechanism and a second power transmission mechanism.

The operation of the folding machine having the above configuration will be explained.

When performing binless folding in which the web 49 that has been folded in half in the width direction by the former 41 is cut as it is, as shown in FIG. The fourth clutch 74 is disengaged. When the drive gear 61 is rotated in this state, the cutting side 42 and the blade receiving barrel 43t! injury is driven (first
direction of the solid line arrow in the figure).

As shown by the solid line in FIG.
0 and is fed between the cutting side 42 and the blade receiving cylinder 43, and the cutting blade 44 on the cutting side 42 and the cutting blade receiving cylinder 5 of the blade receiving cylinder 43.
9 are cut to a predetermined length at opposing positions. The cut signature is guided by speed increasing belts 47 and 48 and sent to a paper discharge device.

When performing parallel folding in which the web 49 that has been half-folded by the former 41 is folded in half in the length direction, as shown in FIG.
The third clutch 73 and the fourth clutch 74 are brought into the engaged state, and the first clutch 71 and the second clutch 72 are brought into the disengaged state. When the drive gear 61 is rotated in state B, only the cutting side 42, folding cylinder 52, and gripping cylinder 55 are driven (the first
direction of the dotted line arrow in the figure).

As shown by the dotted line in FIG. 1, when the web 49 is guided by the second lead roller 51 and fed between the cutting side 42 and the folding cylinder 52, the web 49 is cut into predetermined dimensions by the cutting blade 44. At the same time, the web 49 following the cutting line is held by the needle 53 and wound around the lower semicircular surface of the folding drum 52, and the tail end of the paper is cut by the cutting blade 44 in the same manner as above. .

Note that since the diameter of the cutting side 42 is half that of the folding drum 52, only one of the cutting blades 44 is used.

When the cutting web held by the needle 53 is wound around the folding cylinder 52 until the central part in the longitudinal direction reaches the point of contact between the folding cylinder 52 and the gripping cylinder 55, the insertion knife 54 and the gripping plate 5
6 are facing each other, so the center of the cutting web is the insertion knife 5.
4 is held in the mouth by the mouth plate 56 and folded in half to form a signature, attached to the upper side of the mouth cylinder 55, and sent to a paper discharge device (not shown).

Therefore, according to the folding machine described above, the cutting side 42 is rotated in both directions by operating the clutch to select cutting between the blade receiving cylinder 43 and parallel folding between the folding cylinder 52 and the gripping cylinder 55. One folding machine can be applied to binless folding and parallel folding.

<Effects of the Invention> The folding machine of the present invention is equipped with a first power transmission mechanism and a second power transmission mechanism that transmit the drive of the drive source to the cutting side, so that the cutting cylinder can be rotated in both directions and connected to the blade receiving cylinder. It is possible to choose between cutting in between and parallel folding between the folding cylinder and the gripper cylinder. As a result of (B), pinless folding and parallel folding can be performed with one folding machine, making it possible to share the folding machine.

[Brief explanation of the drawing]

FIG. 1 is a trunk arrangement diagram of a folding machine according to an embodiment of the present invention, and FIG.
The figure is an arrangement diagram of the drive system, Figures 3 and 4 are expanded views of Figure 2, Figure 5 is a diagram of the trunk arrangement of a conventional bottleless folding machine, and Figure 6 is a diagram of the trunk of a conventional parallel folding machine. FIG. In the drawing, 42 is a cutting cylinder, 43 is a blade receiving cylinder, 44 is a cutting blade, 49 is a web 1, 52 is a folding cylinder, 53 is a needle, 54 is an insertion knife, 5 is a gripping cylinder, 6 is a gripping plate, 9 is a cutting blade receiver, 1 is a drive gear, 2 is a first gear, 3 is a blade receiver barrel gear, 4 is a cutting barrel gear, 5 is a second gear, 6 is a third gear, 7 is a folding barrel gear, 1 is a 2 is the second clutch, 3 is the third clutch, and 4 is the fourth clutch.

Claims (1)

[Claims] A cutting cylinder provided with a cutting blade on the outer periphery, a blade receiving cylinder provided opposite to the cutting cylinder and provided with a cutting blade holder, and a cutting cylinder provided opposite to the cutting cylinder and provided with a cutting blade holder, and a signature. a folding cylinder equipped with a needle for holding the folding cylinder; a gripping cylinder provided opposite to the folding cylinder for receiving the signatures held by the folding cylinder and performing parallel folding; and a drive source for driving the cutting cylinder; a first power transmission mechanism that drives and rotates the cutting cylinder in one direction by driving the driving source, cuts off the driving of the folding cylinder and the gripping cylinder, and cuts the signatures between the blade receiving cylinder; and the driving source. and a second power transmission mechanism that drives and rotates the cutting cylinder in the other direction by driving the cutting cylinder, and cuts off the driving of the blade receiving cylinder to perform parallel folding of signatures between the folding cylinder and the gripping cylinder. Features folding machine.