JPH11171401A - Folding machine with reduction drum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding machine with a reduction drum that ensures excellent folding accuracy, stable ejection of signatures and further acceleration of a rotary press. SOLUTION: This folding machine has, in its path where signatures ejected out along a catch drum 4 in a parallel folding part 1 are fed to chopper folders 9a and 9b, a reduction drum 5 adapted to rotate at speed slower than the circumferential speed of the catch drum 4. The catch drum 4 is provided on its periphery with an upper reduction feed-out means 20A adapted to slow down gradually while applying pressure to the upper surface of a signature fed by catched thereto on the catch plate of the catch drum 4 and to let the signature off to the re-catching position of the reduction drum 5 when the signature is released from the catch plate, and with a lower reduction feed-out means 30A situated under the pressing face of the upper reduction feed-out means 20A so as to be brought into connect with the lower side of the signature and to feed it off at the circumferential speed of the upper reduction feed-out means 20A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folder equipped with a speed reducer, and more particularly to a folder suitable for a commercial rotary offset press.

[0002]

2. Description of the Related Art Conventionally, rotary presses which frequently handle chopper-folded printed materials include a reduction cylinder 5 as illustrated in FIG.
Is used. In this type of folding machine, as shown in FIG. 1, each of the cylinders 2 of the parallel folding section 1 is provided between a parallel folding section 1 including a saw cylinder 2, a folding cylinder 3 and a holding cylinder 4, and a chopper folding section 9. , 3 and 4, and a transfer drum 6 which rotates in contact with the speed reducer 5 at the same speed as the speed reducer 5 is provided. And
The reduction cylinder 5 and the transfer cylinder 6 are respectively connected to two sets of chopper folding devices 9a and 9b which are arranged at an interval above and below.

In the folding machine equipped with such a speed reduction cylinder 5, the continuous paper W printed and fed into the parallel folding section 1 is cut into a predetermined size between the sawing cylinder 2 and the folding cylinder 3. ,
The signature S1 is formed by being folded in half between the folding cylinder 3 and the holding cylinder 4 in parallel to the cutting line. Then, the folded signature S1 is transferred from the holding cylinder 4 to the reduction cylinder 5 on the cylinder, and the chopper folding device 9b at the lower stage is
Are alternately sent out to the path leading to the upper chopper folding device 9a from the reduction drum 5 via the transfer drum 6 to the upper chopper folding device 9a. The signatures S1 sent out alternately from the reduction drum 5 are transferred directly to the lower conveyor belts 7a, 7b or to the upper conveyor belts 8a, 8b via the transfer drum 6, and these conveyor belts 7a, 7b are transferred. And 8a, 8b. Then, the leading end of the signature S1 is connected to the upper and lower chopper folding devices 9a and 9a, respectively.
b and stops at the center of the stopped signature S1.
Thus, the signature S2 is formed by half-folding the signature S1 at right angles to the cutting line of the signature S1.

[0004] In the folding machine provided with the speed reduction drum 5 as described above, 2
By alternately using the series of chopper folding devices 9a and 9b, the signature S1 to the chopper folding devices 9a and 9b is obtained.
Can be reduced. As a result, even when the printing speed of the rotary press increases, the rebound when the signature S1 hits the stoppers 10a and 10b of the chopper folding devices 9a and 9b is reduced, so that the folding accuracy is stabilized and the high-speed operation during chopper folding is performed. Becomes possible.

In such a conventional folding machine, the delivery of the signature S1 from the gripper cylinder 4 to the reduction cylinder 5 is performed by the folding cylinder 3 of the parallel folding part 1 and the gripper cylinder 4, as shown in FIG. A folding line portion, which is the tip of the signature S1 that is folded in half in parallel with the cutting line, holds between the holding jaw 4a of the holding cylinder 4 and the holding plate 4b opened and closed by a cam mechanism (not shown). And is conveyed along the outer periphery of the holding drum 4. Subsequently, the holding position of the signature S1 is set to
Approaching the stopper 5a, the gripper plate 4b is separated from the gripper jaw 4a by the cam mechanism to release the leading end of the signature S1. Next, as shown in FIGS. 10 (a) and 10 (b), the pawl 5b, which is opened and closed by the cam mechanism,
The fold line portion of the signature S1 folded into the grip jaw 4a of the grip body 4 is raised and peeled off, as shown in FIG.
The leading end of the signature S1 hitting the stopper 5a of the reduction drum 5 is pressed and caught by the claw 5b and received by the reduction drum 5.

[0006]

However, the following problems are inherent in the conventional folding machine provided with such a speed reduction drum 5. (1) Since the delivery of the signature S1 is performed on the drum from the gripper cylinder 4 having a high peripheral speed to the reduction drum 5 having a low peripheral speed, the leading end of the signature S1 discharged from the gripper cylinder 4 is reduced. When the sheet S comes into contact with the stopper 5a, the signature S1 rebounds. At high speeds, depending on the paper quality, the folding line portion of the signature S may be broken or wrinkled, making it difficult to secure good folding accuracy. (2) Since the signature S1 is delivered on the two cylindrical cylinders having different peripheral speeds from the gripper cylinder 4 to the reduction cylinder 5, simultaneous gripping switching from the gripper cylinder 4 to the reduction cylinder 5 is not possible. It is possible. In addition, the tip of the signature S1 folded into the holding drum 4 is peeled off by the claw 5b of the speed reduction drum 5, and then the operation of grasping the peeled tip of the signature S1 is performed. In a non-restrained state, the delivery was disturbed, which led to poor chopper folding accuracy. (3) In order to shorten the unconstrained state of the signature S1 as much as possible to improve the delivery accuracy, the holding plate 4b of the holding cylinder 4 is required.
In addition, it is necessary to further shorten the opening / closing operation time of the claw 5b of the speed reduction drum 5, but this increases the load on the opening / closing device itself and renders it impractical. Therefore, it was not possible to expect further higher speed of the rotary press with the conventional folding machine.

[0007] The present invention has been made in view of such circumstances, and its object is to ensure good folding accuracy,
Another object of the present invention is to provide a folding machine equipped with a reduction body, which can stably discharge signatures and further increase the speed of a rotary press.

[0008]

SUMMARY OF THE INVENTION In the folding machine with a speed reduction cylinder according to the present invention, the signature discharged from the gripping cylinder of the parallel folding section is transported to the chopper folding device at a speed lower than the peripheral speed of the gripping cylinder. In a folding machine with a slow-rotating reduction cylinder,
Upper deceleration for sending the signature released from the gripper plate to the gripper changing position of the speed reducer while gradually depressing the upper surface of the signature conveyed while being held by the gripper plate. A feeding unit; and a lower deceleration sending unit that is located under a pressure surface of the upper deceleration sending unit and contacts the lower surface of the signature to feed the signature at a peripheral speed of the upper deceleration sending unit. Is provided on the outer periphery.

In the folding machine with a speed reduction cylinder of the present invention, the acceleration / deceleration roller and the gripping cylinder which periodically rotate in the course of transfer of the signature from the gripper having a high peripheral speed to the speed reduction drum having a low peripheral speed are provided. The feed speed of the signature is gradually reduced by the cam follower on the outer peripheral surface, and when the leading end of the signature comes into contact with the stopper of the reduction drum, the signature delivery speed becomes the same as the peripheral speed of the reduction drum.

[0010]

1 to 4 show a first embodiment of a folding machine with a reduction drum according to the present invention. FIG. 1 shows an outline of a folding machine with a reduction drum according to the present embodiment. FIG. 2 is an explanatory view showing a main part of the folding machine with a speed reducer according to the present embodiment, FIG. 3 is a plan view as viewed from X in FIG. 2, and FIG.
FIG. 4B is a plan view of FIG.
(C) is a sectional view thereof.

The folding machine according to the present embodiment has a known parallel folding section 1 into which a printed continuous paper W is fed. The parallel folding section includes a saw cylinder 2, a folding cylinder 3 and a holding cylinder 4. It is composed of In the parallel folding section 1, a signature S1 cut into a predetermined size between the saw cylinder 2 and the folding cylinder 3 and folded in two parallel to the cutting line between the folding cylinder 3 and the holding cylinder 4. Is formed. The signature S1 is transferred from the holding drum 4 to a reduction drum 5 that rotates at a speed lower than the peripheral speed of the holding drum 4. The signature S1 delivered to the reduction drum 5 is a pair of upper and lower conveyor belts 7a and 7b,
And is alternately transferred to a pair of upper and lower conveyor belts 8a and 8b via a transfer drum 6 which rotates at the same peripheral speed as the reduction drum 5. The signatures S1 are sandwiched between the conveyor belts 7a and 7b and between the conveyor belts 8a and 8b, respectively, so that the upper and lower chopper folding devices 9a and 9b
Are transported to the stoppers 10a and 10b, and chopper folding is performed by the chopper blades 11a and 11b of the chopper folding devices 9a and 9b, thereby forming a signature S2 that is half-folded at right angles to the cutting line of the signature S1. .

The folding machine with a speed reducer body according to the present embodiment is applied to the folding machine of a commercial offset rotary press configured as described above, and the discharge side of the holding body 4 of the parallel folding part 1. Arranged at the top. An upper deceleration sending means 20A;
And a lower deceleration feeding means 30A disposed on the outer peripheral surface of the gripper cylinder 4. Upper deceleration sending means 2
0A presses the upper surface of the signature S1 conveyed while being held by the holding plate 4b and the holding jaw 4a of the holding cylinder 4,
After the pressurization, the gripper plate 4b is released, and the signature S1 is sent to the gripper changing position of the reduction drum 5 while gradually decelerating. The lower deceleration sending means 30A is provided for contacting the lower surface of the signature S1 and sending out the signature S1 at the peripheral speed of the upper deceleration sending means 20A.

As shown in FIG. 2, the upper deceleration sending means 20A is used to hold the signature S1 held by the holding plate 4b and the holding jaw 4a of the holding cylinder 4 and the conveyed signature S1 to the claw 5 of the reduction cylinder 5.
A stepped acceleration / deceleration roller 21 disposed on the outer periphery of the gripping cylinder 4 until the b reaches a predetermined position, and a signature S1 sent out while being decelerated by the acceleration / deceleration roller 21 An arc-shaped guide plate 12 is provided along the outer peripheral surface of the gripper cylinder 4 to guide the gripper toward the gripper changing position.

As shown in FIG. 3, the acceleration / deceleration roller 21 is formed such that the large-diameter portion 21a of the roller 21 rolls on the upper surface of a double-row lower deceleration feeding means 30A described later. Both ends of the acceleration / deceleration roller 21 are connected to arms 22,
The ends of the arms 22 are rotatably mounted on cylindrical supports 23 mounted on a frame, respectively. The arm 22 is connected to the acceleration / deceleration roller 2 by an air cylinder 24 mounted on the frame.
One large-diameter portion 21a is configured to come into pressure contact with the upper surface of a lower deceleration feeding means 30a, which will be described later, on the holding drum 4. This pressurizing mechanism may use a spring or an eccentric bearing in addition to the air cylinder 24.

As shown in FIG. 3, the drive system of the acceleration / deceleration roller 21 has a gear 21b fixedly mounted on a drive-side journal of the acceleration / deceleration roller 21.
And a gear 25a fixedly mounted on a drive shaft 25 rotatably supported on the inner diameter side. An acceleration / deceleration mechanism 26 having a known non-circular gear that is capable of periodically performing acceleration / deceleration rotation is provided at a drive-side shaft end of the drive shaft 25,
Rotational power from a drive source is applied to the acceleration / deceleration mechanism 26 via a toothed belt 26a. Note that the acceleration / deceleration mechanism 26 may be a mechanism that electrically changes the rotation of the parallel cam or the motor.

The lower deceleration sending means 30A is shown in FIG.
As shown in (a), (b) and (c), a plurality of rows of grooves 4c are formed along the outer peripheral arc surface of the gripping cylinder 4. This groove 4c has a pair of arc-shaped base plates 3 having an inverted T-shaped cross section.
2a, 32b are inserted and the respective base plates 32a, 32
A large number of cam followers 31 face each other in a zigzag pattern, and are mounted so that the outer circumferences of the cam followers 31 coincide with the outer circumferential arc surface of the holding drum 4. Therefore, on the outer peripheral surface of the gripping cylinder 4, a narrow-width circular arc-shaped rotating surface is formed which can be rotated by the lower deceleration sending means 30 A. The center line of this circular arc-shaped rotating surface is the large diameter of the acceleration / deceleration roller 21. It is set so as to coincide with each center of the portion 21a.

In the folding machine equipped with a speed reduction cylinder configured as described above, the operation of the rotary press is started, and the continuous paper W that has been printed and sent to the parallel folding section 1 is cut by the saw cylinder 2 in the parallel folding section 1. And the folding cylinder 3 are cut into predetermined dimensions, and the folding cylinder 3 and the holding cylinder 4 are folded in two parallel to the cutting line to form a signature S1. The signature S1 is conveyed along the outer periphery of the gripping cylinder 4 with the folding line portion held between the gripping plate 4b and the gripping jaw 4a of the gripping cylinder 4. When the gripper cylinder 4 further rotates and the signature S1 reaches a state where the signature S1 comes into pressure contact with the acceleration / deceleration roller 21 of the upper deceleration sending means 20A, the gripper plate 4b is separated from the gripper jaw 4a by its cam mechanism, and the signature S1 is moved. It is released from the holding body 4. At this time, the large-diameter portion 21a of the acceleration / deceleration roller 21 of the upper deceleration sending means 20A is connected to the cam follower 3 of the lower deceleration sending means 30A on the outer peripheral surface of the gripping cylinder 4.
1 and is rotated at the same peripheral speed as the outer peripheral portion of the gripper cylinder 4.

When the leading end of the signature S1 is bitten between the cam follower 31 and the large-diameter portion 21a of the acceleration / deceleration roller 21 which is rotating in contact with the signature S1, the gripper 4 reaches the peripheral speed and rotates. The rotation of the acceleration / deceleration roller 21 is gradually decelerated by the acceleration / deceleration mechanism 26, and the signature S1 is sent out at the peripheral speed of the speed reduction drum 5. When the tip of the signature S1 comes into contact with the stopper 5a of the reduction drum 5, the claw 5b of the reduction drum 5 simultaneously holds the folding line portion, which is the tip of the signature S1, and the switching to the reduction drum 5 is completed. The rotation of the acceleration / deceleration roller 21 that has sent out the signature S1 is gradually accelerated by the acceleration / deceleration mechanism 26, and the tip of the next signature S1 is moved to the acceleration / deceleration roller 2
The peripheral speed of the holding cylinder 4 is returned to the position before the bite portion 1 bites between the large diameter portion 21a and the cam follower 31. The signature S1 transferred to the reduction drum 5 is transferred to the lower conveying belt 7 for each copy.
a, 7b and the upper conveying belt 8 via the transfer cylinder 6.
a, 8b, and the respective transfer belts 7a, 7b
And 8a and 8b, the upper and lower chopper folding devices 9
Guides a and 9b form a signature S2 that is half-folded at right angles to the cutting line of the signature S1. Thus, 2
By alternately using the series chopper folding devices 9a and 9b, chopper folding can be performed in a high-speed operation state without reducing the printing speed of the rotary press.

FIGS. 5 and 6 show a second embodiment of a folding machine with a speed reducer according to the present invention. FIG. 5 is an explanatory view showing the main part, and FIG. FIG.

In the first embodiment, the lower deceleration sending means 30A is provided with a plurality of rows of grooves 4c provided along the outer circumferential arc surface of the gripping cylinder 4, and the outer circumference of the lower deceleration sending means 30A coincides with the outer circumferential arc surface of the gripping cylinder 4. In contrast to the large number of cam followers 31 provided as described above, the lower deceleration sending means 30B of the present embodiment provides the upper decelerated delivery of the large number of cam followers 31 provided on the outer peripheral arc surface of the holding drum 4. Means 2
It is designed to rotate via a belt at the same peripheral speed as 0A.

That is, as shown in FIGS. 5 and 6, the lower deceleration feeding means 30B of the belt drive type comprises an acceleration / deceleration roller 33 disposed below the gripper changing position of the deceleration drum 5 and an outer periphery of the gripper drum 4. And a plurality of rows of belts 34 stretched over the upper surfaces of a large number of cam followers 31 provided around the vehicle. A drive shaft end of the acceleration / deceleration roller 33 supported by the frame is provided with a known acceleration / deceleration rotation that can be periodically performed in synchronization with the peripheral speed of the acceleration / deceleration roller 21 of the upper deceleration / delivery means 20A. An acceleration / deceleration mechanism 35 having a non-circular gear is provided.
The rotation power from the drive source is applied via 5a. The acceleration / deceleration mechanism 35 may be a mechanism that electrically changes the rotation of a parallel cam or a motor.

In the folding machine with a speed reduction cylinder of this embodiment, the signature S which is held between the gripping plate 4b and the gripping jaw 4a of the gripping cylinder 4 and carried along the outer periphery of the gripping cylinder 4 is provided.
The belt 3 on a number of cam followers 31 provided along the outer periphery of the holding drum 4 and the acceleration / deceleration roller 21 of the upper deceleration sending means 20A, the tip of which is rotated by pressing.
When the signature S1 is released from the gripper plate 4b, the acceleration / deceleration roller 21 and the lower deceleration of the upper deceleration delivery means 20A rotating at the same peripheral speed as the outer circumference of the gripper cylinder 4 are rotated. The rotation of the acceleration / deceleration roller 33 of the feeding means 30B is gradually reduced by the acceleration / deceleration mechanisms 26 and 35, respectively, and the belt 3 driven by the acceleration / deceleration roller 33 of the lower speed-delivering means 30B is rotated.
Similarly, the peripheral speed of the upper part 4 is also reduced,
It runs at the same peripheral speed as the acceleration / deceleration roller 21 of A. Therefore, the signature S1 conveyed while being sandwiched between the large-diameter portion 21a of the acceleration / deceleration roller 21 and the belt 34 is conveyed while being gradually decelerated in the correct posture, and the leading end thereof is the stopper 5a of the reduction drum 5. At the moment of contact with the peripheral speed of the reduction drum 5. For this reason, the leading end of the signature S1 is held in the correct position without any disturbance by the claw 5b of the reduction cylinder 5, and the signature S1 can be more stably delivered from the gripping cylinder 4 to the reduction cylinder 5. Other configurations and operations are the same as those of the first embodiment.
This is the same as the embodiment.

FIGS. 7 and 8 show a third embodiment of a folding machine with a speed reducer according to the present invention. FIG. 7 is an explanatory view showing the main part, and FIG. It is a top view.

In the above-described second embodiment, the acceleration / deceleration roller 21 of the upper deceleration sending means 20A is provided with the holding cylinder 4
Are in direct pressure contact with the surface of a belt 34 for rotatingly driving a number of cam followers 31 provided around the outer periphery of the belt. On the other hand, in the upper deceleration feeding stage 20B of the third embodiment, a belt is also wound around the acceleration / deceleration roller.

That is, as shown in FIGS. 7 and 8, the belt-driven upper deceleration sending means 20B comprises a rotatable pulley 27a disposed near the gripping position of the reduction drum 5 and a rotatable pulley 27a. A plurality of rows of belts 29 are stretched around a rotatable pulley 27b provided at an upper portion and an acceleration / deceleration roller 28 installed in place of the acceleration / deceleration roller 21, and the belt 29 is held on the discharge-side outer peripheral surface of the drum 4. It is attached. The center line of each of the belts 29 is set to coincide with the center line of a belt 34 that rotationally drives a number of cam followers 31 provided around the outer periphery of the holding drum 4.

In the folding machine with a speed reduction cylinder of the present embodiment, the signature S which is held between the gripping plate 4b and the gripping jaw 4a of the gripping cylinder 4 and carried along the outer periphery of the gripping cylinder 4 is provided.
The belt 29 of the upper deceleration sending means 20B and the lower deceleration sending means 30 whose front ends rotate under pressure contact
When the signature S1 is released from the gripper plate 4b and reaches the same peripheral speed as the outer periphery of the gripper cylinder 4, the acceleration / deceleration roller 28 of the upper deceleration delivery means 20B is rotated. And the rotation of the acceleration / deceleration roller 33 of the lower deceleration delivery means 30B is controlled by the acceleration / deceleration mechanism 26,
35 gradually decelerates through the upper deceleration sending means 2
The peripheral speed of the belt 29, which is rotationally driven by the acceleration / deceleration roller 28 of 0B, is also gradually reduced, and runs at the same peripheral speed as the belt 34 of the lower deceleration sending means 30B. At this time, since the upper and lower belts 29 and 34 are in pressure contact with each other on an arcuate surface, the signature S1, which is sandwiched and conveyed between the upper and lower belts 29 and 34, has a correct posture without disturbance. The sheet is conveyed while being gradually decelerated as it is, and at the moment when the leading end of the signature S1 comes into contact with the stopper 5a of the reduction drum 5, the peripheral speed of the reduction drum 5 is reached. For this reason, signature S
The front end of the signature 1 is replaced with the corrective drum 5 in a correct posture, so that the signature S1 can be more stably delivered from the gripper drum 4 to the reducer drum 5. Other configurations and operations are the same as those of the second embodiment.

[0027]

As described above, the folding machine equipped with a speed reducer according to the present invention holds the signature discharged from the gripper on the outer peripheral surface of the gripper and decelerates the signature while sending the signature to the speed reducer. Since the delivery means and the lower deceleration delivery means are provided, the following effects can be obtained. (1) In the process of transferring a signature from a gripper cylinder having a high peripheral speed to a speed reduction cylinder having a low peripheral speed, a signature delivery speed by an acceleration / deceleration roller that periodically performs acceleration / deceleration rotation and a cam follower on the outer peripheral surface of the gripper cylinder. Is gradually decelerated, and when the leading end of the signature abuts against the stopper of the reduction cylinder, the delivery speed of the signature is made equal to the peripheral speed of the reduction cylinder. Therefore, even during high-speed operation, the leading end of the signature does not abut against the stopper of the reduction drum and bounce off.
Since breakage and wrinkling of the fold line portion are eliminated, extremely good folding accuracy can be secured. (2) The delivery of signatures from the gripper cylinder to the reduction cylinder does not take place from the gripper cylinder having a higher peripheral speed to the reduction cylinder having a slower peripheral speed, as in the prior art. Instead, the acceleration / deceleration rollers and the gripper outer peripheral surface are used. The speed of the signature is gradually reduced using the cam follower, and the signature is delivered after reaching the peripheral speed of the reduction cylinder, so that the opening and closing operation of the gripper plate and claw is gradual, and the opening and closing amount is minimized. Can be. Therefore, the load on these switching devices can be reduced, the wear of the cam mechanism and the like is reduced, the service life is prolonged, the noise is reduced, and the speed of the rotary press can be further increased. (3) The signature delivered from the gripping cylinder to the speed reduction cylinder is pressed by the acceleration / deceleration roller on the gripping cylinder, so that the leading edge of the signature that has been folded by the gripping plate and gripping jaw is being conveyed. The claw of the deceleration cylinder is easier to receive, and the gripper plate keeps the signature in a restrained state until the tip of the signature is bitten between the acceleration / deceleration roller and the cam follower on the outer circumference of the drum. Until the end of the signature abuts against the stopper of the reduction cylinder, the acceleration / deceleration roller gradually decelerates and keeps the signature in the restrained state. The signature can be delivered.

[Brief description of the drawings]

FIG. 1 is a layout view showing a folding machine with a speed reducer body according to a first embodiment of the present invention.

FIG. 2 is an enlarged view showing a main part of the folding machine with a speed reducer body according to the present embodiment.

3 is a plan view of the folding machine with a reduction drum in FIG. 2 as viewed in the direction X. FIG.

FIG. 4 shows a main part of FIG. 3; FIG.
FIG. 4 is an enlarged sectional view of Y, FIG. 4B is a plan view thereof, and FIG.

FIG. 5 is an enlarged layout view illustrating a main part of a folding machine with a speed reducer body according to a second embodiment of the present invention.

FIG. 6 is a front view as viewed in Z direction in FIG. 5;

FIG. 7 is an enlarged layout view showing a main part of a folding machine with a speed reducer body according to a third embodiment of the present invention.

8 is a plan view as viewed in the direction X in FIG. 7;

FIG. 9 is a layout diagram showing an outline of a folding machine with a reduction drum conventionally used.

FIG. 10 is an enlarged view of a main part for describing a delivery operation of a signature between a holding cylinder and a reduction cylinder in a folding machine with a reduction cylinder conventionally used;
(A) is a partial cross-sectional view showing a state in which the tip of the signature is held between the holding jaw of the holding body and the holding plate, and (b) is a state in which the holding plate separates from the holding jaw and releases the tip of the signature. FIG. 7C is a partial cross-sectional view illustrating a state in which the leading end of the signature that has hit the stopper of the speed reducer is caught by a claw and delivered to the speed reducer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Parallel folding part 2 Saw cylinder 3 Folding cylinder 4 Holding cylinder 4a Holding jaw 4b Holding plate 4c Groove 5 Reduction cylinder 5a Stopper 5b Claw 6 Transfer cylinder 7a, 7b Lower transport belt 8a, 8b Upper transport belt 9 Chopper folding section 9a, 9b Chopper folding device 10a, 10b Stopper 11a, 11b Chopper blade 12 Guide plate 20A, 20B Upper deceleration sending means 21 Acceleration / deceleration roller 21a Large diameter portion 21b Gear 22 Arm 23 Support 24 Air cylinder 25 Drive shaft 25a Gear 26 Addition Reduction mechanism 26a Toothed belt 27a, 27b Pulley (driven roller) 28 Acceleration / deceleration roller 29 Belt 30A, 30B Lower deceleration sending means 31 Cam follower (driven roller) 32a, 32b Base plate 33 Acceleration / deceleration roller 34 Belt 35 Acceleration / deceleration mechanism 35a Tooth With Belt W continuous paper S1, S2 signature

Claims (5)

[Claims] 1. A folding machine provided with a speed reduction cylinder that rotates at a speed lower than the peripheral speed of the gripping cylinder in a path for conveying signatures discharged from the gripping cylinder of the parallel folding section to a chopper folding device. Pressing the upper surface of the signature that is conveyed while being held by the holding plate of the trunk, gradually decelerating,
An upper deceleration sending means for sending the signature released from the gripping plate to a grip changing position of the speed reduction cylinder; and the signature which is below a pressing surface of the upper deceleration sending means and contacts a lower surface of the signature. And a lower deceleration sending means for feeding the lower speed feeding means at a peripheral speed of the upper decelerating feeding means is provided on an outer periphery of the gripping cylinder. 2. The apparatus according to claim 1, wherein said upper deceleration sending means comprises an acceleration / deceleration roller having an acceleration / deceleration mechanism capable of accelerating / decelerating from a peripheral speed of said gripping cylinder to a peripheral speed of said deceleration cylinder. 4. A folding machine with a reduction body according to 4. 3. The lower deceleration feeding means comprises a number of driven rollers provided in a plurality of grooves formed in an outer circumferential arc surface of the gripping cylinder such that the outer circumference coincides with the outer circumferential arc surface of the gripping cylinder. The folding machine with a reduction drum according to claim 1 or 2, wherein: 4. The lower deceleration sending means includes a plurality of driven rollers provided in a plurality of grooves formed in an outer circumferential arc surface of the gripping cylinder, and a peripheral portion of the gripping cylinder extending from the circumference of the gripping cylinder to the outside. An acceleration / deceleration roller having an acceleration / deceleration mechanism capable of decelerating from a high speed to a peripheral speed of the reduction drum, and a plurality of belts stretched over the surfaces of the plurality of driven rollers. The folding machine with a reduction drum according to claim 1. 5. An accelerating / decelerating roller having an accelerating / decelerating mechanism, wherein the upper decelerating delivery means is provided from above the periphery of the gripping cylinder to the outside, and is capable of decelerating from the peripheral speed of the gripping cylinder to the peripheral speed of the reducing cylinder.
A pulley disposed in the vicinity of the speed reduction drum, and a plurality of rows of belts stretched between the pulley and the acceleration / deceleration roller, and the belt is moved from the acceleration / deceleration roller to the gripper changing position of the speed reduction drum. 5. The folding machine with a reduction drum according to claim 1, wherein the folding machine is caused to travel along a position corresponding to the lower deceleration sending means on the outer peripheral arc surface.