JPH0958916A - Folding machine with discharge number change-over device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a folding machine having various uses and good efficiency for a rotary press by providing a change-over device having means for changing- over discharge paper speed ratio and means for changing-over the rotation ratio of a reverse barrel. SOLUTION: Traveling papers 1a, 1b are longitudinally folded by upper-stage triangular plates 2a, 2b, respectively to be overlapped each other, and passed through a lower-stage triangular plate 3 to be further folded longitudinally. Then the folded and over-lapped papers are cut by a cutter 4, so that a signature, is obtained, which is folded and cut in predetermined sizes. The signature is divided by the top end of a dividing guide 14 of a dividing device 10 into an upper-stage vane 5a every one rotation of a print-barrel in case of being set at a large number side, and into an lower-stage vane 5b every half rotation of the print-barrel in case of being set at a small number side, alternately, and the divided signatures are dropped in the rotating vanes, respectively. In this manner, a folding machine having various uses and economy for a rotary press can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding machine capable of switching the number of discharged sheets of a signature printed by a rotary press, cut into a predetermined size, folded and discharged.

[0002]

FIG. 3 shows an example of a folding machine of a rotary press for books.

In the figure, a folding machine for a book press has a lower triangular plate 3 arranged in a direction orthogonal to the lower triangular plates 2a and 2b arranged in parallel. A cutting device 4, a sorting device 10, upper and lower impellers 5a and 5b, a reversing cylinder 6, and upper and lower sheet discharging conveyors 7a and 7b are arranged below the triangular plate 3.

FIG. 5 shows a conventional example of the drive system of the folding machine. In the figure, the power from the drive source is transmitted to the cam 11 of the sorting apparatus 10 via the timing belts G, H and J. It is also transmitted to the reversing cylinder 6 via the timing belts G, H, K and L. The cam 11 is rotated at 1/2 the rotation speed of the plate cylinder, and the reversing cylinder 6 is rotated at 1/4 rotation speed of the plate cylinder.

Further, the upper and lower sheet discharge conveyors 7a, 7a
In b, as shown in FIG. 6, upper and lower impellers 5a,
Power is transmitted from 5b through the chains Q and R, and the upper and lower sheet discharge conveyors 7a and 7b are rotated at the same rotational speed as the plate cylinder.

In the conventional folding machine configured as described above, as shown in FIG. 3, each running paper 1a, 1b vertically cut by a slitter through a printing unit is cut into half in the upper triangular plate. Fold vertically with 2a and 2b. Next, the two vertically-running running papers 1a and 1b are overlapped, passed through the lower triangular plate 3, and further vertically folded and folded.
The sheet is cut by the cutting device 4 arranged at the lower part of the sheet, and folded into a predetermined size to obtain a cut signature.

On the other hand, the cam 11 of the distribution device 10
4 has a shape in which two semicircles having slightly different radii are combined, so that the cam follower 12 is rotated every half rotation of the cam 11, that is, every one rotation of the plate cylinder. The torsion bar 13 is displaced via the, and the tip of the sorting guide 14 is swung left and right.

Therefore, the signature 1c which is cut by the cutting device 4 and falls is distributed by the tip of the distribution guide 14 to the upper impeller 5a and the lower impeller 5b alternately for each revolution of the plate cylinder. And is dropped into the blades of the rotating impeller, and the number of signatures 1c obtained by one rotation of the plate cylinder is stacked on the guide plates of the upper and lower sheet discharge conveyors 7a and 7b. Becomes

In the upper and lower sheet discharge conveyors 7a and 7b, as shown in FIG. 3, the hooks attached to the chains running on the lower surface of the guide plate of each conveyor have hooks attached thereto every one rotation of the plate cylinder. The bundles Sa and Sb of signatures, which are projected on the guide plate and stacked on the guide plate, are hooked and conveyed. Further, the bundle Sb of signatures conveyed in a stacked state from the lower stage impeller 5b is inverted upside down and conveyed by the reversing cylinder 6.

The bundle of signatures Sa conveyed by the upper sheet discharging conveyor 7a is the inverted bundle of signatures S conveyed by the lower sheet discharging conveyor 7b.
After getting on top of b, the bundles Sa and Sb of both signatures are piled up and sent to the bookbinding machine line in the subsequent step.

In the conventional folding machine for a book rotary press, the distribution device 10 alternately distributes the signatures to the upper and lower impellers for each rotation of the plate cylinder. The speed of the paper discharge conveyor is also set so as to convey each bundle of the number of signatures obtained by one rotation of the plate cylinder.

That is, a folding machine of a rotary press capable of mounting a B6 size 192 page plate can discharge only a bundle of B6 size 192 page signatures. For this reason, the bookbinding machine in the subsequent process can always handle only one type of bookbinding,
It often becomes inefficient depending on the number of pages of the book to be bound.

An object of the present invention is to provide an efficient rotary press folding machine which is not only applicable to bookbinding processing of a book having a small number of pages, but can also be used for two types of bookbinding processing at the same time with a wide range of use. Especially.

[0014]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and the gist of the means is to make a signature by a plurality of triangular plates arranged in the upper and lower stages and a set of cutting devices. The formed signatures are alternately distributed to one sheet discharging device and the other sheet discharging device having a reversing cylinder by a sorting device installed at the lower part of the cutting device, and come out from both the sheet discharging devices. In a folding machine configured to stack and stack a stack of signatures, a switching device is provided in a drive system of the folding machine, and the number of distributions per one rotation of the plate cylinder in the distribution device is provided through the switching device. And a folding machine equipped with a signature sheet discharge number switching device configured to switch the speed ratio of the paper discharge conveyor and the rotation ratio of the reversing cylinder in the paper discharge device.

According to the above means, when the printing plate mounted on the plate cylinder of the rotary press is a printed matter of the same book and has multiple pages, the switching device provided in the drive system of the folding machine is set to the multiple copy side. To do. Further, when the printing plate mounted on the plate cylinder is divided into two types of printed matter of the book or when the printed matter of the same book has a small number of pages, the switching device is set to the small number side.

However, when the switching device is set to the multi-copy side, the signatures folded and cut to a predetermined size by the upper and lower triangular plates and the cutting device are moved to the sorting device by the switching device. The power transmission path of the plate cylinder 1
The path is driven at a speed that changes the sorting direction once per rotation, and the power transmission path to the reversing cylinder and the paper discharge conveyor is also driven at a speed that processes a stack of stacked signatures for one rotation of the plate cylinder. Make it a route.

Therefore, the signature for one revolution of the plate cylinder coming down from the cutting device is alternately dropped into the upper and lower impellers, and the plate cylinder 1 is placed on the guide plates of the upper and lower sheet discharge conveyors.
The folded signatures are stacked. Then, the stacked bundle of signatures is conveyed by the chain of the paper discharge conveyor. The bundle of signatures conveyed in the stacked state from the lower impeller is inverted and conveyed by the reversing cylinder every two rotations of the plate cylinder.

Then, the bundle of signatures conveyed by the upper sheet discharging conveyor rides on the bundle of inverted signatures conveyed by the lower sheet discharging conveyor, and both bundles of signatures are stacked. Then, it is sent to the bookbinding machine line in the post process.

When the switching device is set to a small number of copies, the switching device drives the power transmission path to the distribution device at a speed that changes the distribution direction once per 1/2 rotation of the plate cylinder. In addition to the path, the power transmission path to the reversing cylinder and the paper discharge conveyor should be a drive path that is driven at a speed twice as fast as when the multiple copy side is set.

Therefore, the signatures for 1/2 rotation of the plate cylinder are alternately dropped into the upper and lower impellers, and the plate cylinder is rotated 1/2 rotation on the guide plates of the upper and lower discharge conveyors. The signatures are stacked. Then, the stack of the folded signatures is conveyed by the chain of the paper discharge conveyor. The signatures conveyed in the stacked state from the lower impeller are inverted and conveyed by the reversing cylinder every one rotation of the plate cylinder. Then, the stack of signatures conveyed by the upper-stage discharge conveyor rides on the inverted stack of signatures conveyed by the lower-stage discharge conveyor, and both stacks of signatures are stacked. It is sent to the line of the bookbinding machine in the post process.

Since the present invention operates as described above, the distribution device can be switched between two stages, one rotation for each plate cylinder and one half rotation for each plate cylinder. Corresponding to this switching, the speed of the discharge conveyor can be changed. By changing the number of rotations of the reversing cylinder in two stages, a single folding machine can supply a bundle of various signatures to a line of a bookbinding machine in a post process.

Therefore, in the bookbinding processing section in the subsequent step, the most efficient printing and paper discharging means can be selected according to the number and type of pages of the book to be bound.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view showing a drive system on a drive side of a folder according to an embodiment of the present invention, FIG. 2 is a plan view showing a drive system on an operation side of the folder, and FIG. 3 is a rotary press for books. FIG. 4 is an explanatory perspective view showing the entire folding machine, and FIG. 4 is an enlarged explanatory view of the sorting apparatus.

As shown in FIG. 3, the folding machine for a book rotary press according to the embodiment of the present invention has two sets of upper triangular plates 2a and 2b arranged in parallel at the upper part of the folding machine. A pair of lower triangular plates 3 are arranged in a direction orthogonal to
A cutting device 4, a sorting device 10, upper and lower impellers 5a and 5b, a reversing cylinder 6, and an upper and lower paper discharge conveyor 7 are provided under
a and 7b are arranged.

As shown in FIG. 4, the distributing device 10 has two semicircles 11a, 11a having slightly different radii.
The cam 11 having a shape including 11b is distributed to the guide 14
Is assembled so as to be in constant contact with the cam follower 12 attached to the tightened torsion bar 13.

The drive system of the folding machine according to this embodiment is provided with a switching device 20 as shown in FIG. In the switching device 20, the output side pulleys 25 a and 25 b are provided on both sides of the input side pulley 24 with the air clutch 23.
The clutch portion 21 attached to the rotary shaft 27 via a and 23b, and the intermediate pulley 2 having the same number of teeth as the output side pulley.
5 c, 25 d, and a small-sized intermediate pulley 26 having a number of teeth of 1/2 of this intermediate pulley, are fixed to a common rotating shaft 28, and a transmission unit 22.

Further, in the drive system of the folding machine according to this embodiment, as shown in FIG.
A switching device 30 is also provided in the drive systems a and 7b. This switching device 30 is provided at the end of the impeller shaft 5s.
The output side chain wheels 34a and 34b are arranged side by side via the air clutches 33a and 33b, respectively, and half of the output side chain wheels.
The intermediate chain wheel 35 having the number of teeth and the intermediate small chain wheel 36 having the number of teeth of ½ of the intermediate chain wheel 35 are fixed to both ends of the same rotary shaft 37. There is.

In the folding machine according to the present embodiment configured as described above, the running papers 1a and 1b, each of which is vertically cut in half by the slitter through the printing unit, are the upper triangular plate 2a,
2b is vertically folded, and then the two vertically-running running papers 1a and 1b are overlapped with each other, passed through the lower triangular plate 3 and further vertically folded to be folded, and disposed below the lower triangular plate 3. When cut by the cutting device 4, the folded signature 1c (see FIG. 4) is obtained after being folded into a predetermined size.

The signature 1c is guided by the guide belt and enters the upper impeller 5a or the lower impeller 5b according to the direction of the tip of the sorting guide 14 of the sorting device 10. On the other hand, the cam 11 of the distribution device 10 is 1/2
Since the radius of rotation of the portion that comes into contact with the cam follower 12 is different each time it rotates, the displacement amount of the torsion bar 13 changes via the cam follower 12, and as shown by the solid line and the alternate long and short dash line in FIG. The orientation of changes every time the cam 11 rotates 1/2.

Therefore, when the changeover switch of the operation panel (not shown) is set to the multiple copy side at the start of operation, the air clutch 23b of the output side pulley 25b of the changeover device 20 shown in FIG. Clutch 23b
The output side pulley 25b attached to the rotary shaft rotates the rotary shaft 28 of the transmission unit 22 at the same speed as the rotary shaft 27 of the clutch unit 21 via the timing belt B. This rotation is distributed by the timing belt C to the cam 1 of the distribution device 10.
1 is rotated at a speed of 1/2 rotation for 1 rotation of the plate cylinder. Therefore, in a rotary press in which a printing plate having a size of 192 pages of B6 size is mounted on the plate cylinder, a signature of 192 pages of B6 size is provided for each rotation of the plate cylinder with the rotating upper impeller 5a. It will be dropped into the lower impeller 5b alternately.

Further, if the changeover switch of the operation panel is set to the small number side at the start of operation, the air clutch 23a of the output side pulley 25a of the changeover device 20 shown in FIG. The output side pulley 25a attached to the rotary shaft rotates the rotary shaft 28 of the transmission unit 22 at twice the rotational speed of the rotary shaft 27 of the clutch unit 21 via the timing belt D. Then, this rotation is transmitted to the cam shaft of the distribution device 10 by the timing belt C, and the cam 11 is rotated at the same rotation speed as the plate cylinder.

Therefore, in a rotary press in which a plate having a size of 192 pages of B6 size is mounted on the plate cylinder, the signature of 96 pages of B6 size is rotated every 1/2 rotation of the plate cylinder. The impeller 5a in the upper stage and the impeller 5b in the lower stage are alternately dropped.

The switching of the drive system of the reversing cylinder 6 is similar to the case of the above-mentioned cam, and when the number of copies is set, the timing pulley 6 attached to the shaft of the reversing cylinder 6 is switched.
t is rotated from the drive source through the timing belts A, B, E and F at a speed of 1/4 rotation for one rotation of the plate cylinder. Further, when the number of copies is set to a small number, the belt is rotated through the timing belts A, D, E, and F at a speed of 1/2 rotation for one rotation of the plate cylinder.

To switch the drive systems of the above-mentioned paper discharge conveyors 7a and 7b, when the changeover switch of the operation panel (not shown) is set to the multi-copy side at the start of operation, the air clutch 33b of the changeover device 30 shown in FIG. In this state, the chain wheel 34b attached to the clutch 33b causes the rotary shaft 37 of the speed change unit to rotate at twice the rotational speed of the impeller via the chain M. With this rotation, the drive shaft 7s of the paper discharge conveyor is rotated by the chain N at the same speed as the plate cylinder.

If the changeover switch of the operation panel is set to the small number side at the start of operation, the air clutch 33a of the changeover device 30 shown in FIG. 2 is put in the "wearing" state and attached to this clutch 33a. The chain wheel 34a is connected to the rotary shaft 3 of the transmission 32 through the chain P.
Rotate 7 at 4 times the speed of the impeller. This rotation is transmitted to the paper discharge conveyor drive shaft 7s by the chain N,
This is rotated at twice the number of rotations of the plate cylinder.

Thus, when the signature 1c cut by the cutting device 4 and falling is set to the multi-copy side by the tip of the sorting guide 14, the multi-copy side is set to the small copy side every one rotation of the plate cylinder. When set, the blades are alternately distributed to the upper impeller 5a and the lower impeller 5b every 1/2 rotation of the plate cylinder, and are dropped into the blades of the rotating impeller.

As a result, the upper and lower sheet discharge conveyors 7a,
On the guide plate 7b, the former makes one revolution of the plate cylinder, and the latter makes the plate cylinder 1 /
The number of signatures 1c obtained by two rotations is stacked.
That is, in a rotary press in which a printing plate having a size of 192 pages of B6 size is mounted on the plate cylinder, when the number of copies is set, a signature of 192 pages of B6 size is printed every one rotation of the plate cylinder. However, they are dropped into the rotating upper impeller 5a and lower rotating impeller 5b alternately.

In the upper and lower sheet discharge conveyors 7a and 7b, when the hooks attached to the chains running on the lower surface of the guide plate of each conveyor are set on the multi-copy side, When it is set for each rotation or for the small number of copies, it pulls out the bundles of signatures Sa and Sb that are projected on the guide plate every 1/2 rotation of the plate cylinder and stacked on the guide plate. Hang and transport. At this time, the stack Sb of signatures conveyed in the stacked state from the lower stage impeller 5b is inverted by the inversion cylinder 6 and conveyed.

Therefore, the bundle of signatures Sa conveyed by the upper-stage discharge conveyor 7a rides on the inverted bundle of signatures Sb conveyed by the lower-stage discharge conveyor 7b, and the bundle of both signatures is conveyed. A state where Sa and Sb are stacked,
That is, in a rotary press having a printing plate having a size of 192 pages of B6 size on the plate cylinder, if the number of copies is set, the folding of 192 pages of B6 size is performed every two rotations of the plate cylinder. If two stacks of signatures are stacked, and if the number of copies is set to the small number side, two stacks of signatures for 96 pages of B6 size are stacked for each rotation of the plate cylinder. It is sent to the binding machine line.

The cutting device 4 cuts in multiples of 2 at two or more positions per revolution of the plate cylinder.

[0042]

The present invention is configured as described above.
According to the present invention, the distribution device can be switched between two stages, one for each rotation of the plate cylinder and one for every 1/2 rotation of the plate cylinder, and the speed of the discharge conveyor and the rotation speed of the reversing cylinder can be set to 2 in response to this switching. Since the process is switched to the stage, as shown in the following (1) to (3), a bundle of various signatures can be supplied to the line of the bookbinding machine in the post process by one folding machine.

Therefore, in the bookbinding processing section in the post-process, it becomes possible to select the most efficient printing / discharging means according to the number and type of pages of the book to be bound. A folding machine can be provided.

(1) A bundle of signatures of the same book having a large number of pages can be supplied to the subsequent process. In a rotary press capable of mounting a printing plate having a size of 192 pages of B6 size on the plate cylinder, if the switching device is set to the side of a large number of copies, the B6 size 19 is changed every two rotations of the plate cylinder.
A bundle of signatures for two 2-page books is ejected one by one.

(2) A bundle of signatures of the same book having a small number of pages can be supplied to the subsequent process. In a rotary press capable of mounting a printing plate having a size of 192 pages of B6 size on the plate cylinder, if the switching device is set to a small number of copies, the B6 size is 9 for each rotation of the plate cylinder.
A bundle of signatures for two 6-page books is ejected one by one.

(3) A bundle of signatures of two kinds of books can be simultaneously supplied to the subsequent process. In a rotary press capable of mounting a printing plate of 192 B6 size pages on the plate cylinder, if the switching device is set to a small number of copies, one copy of each of two types of B6 size 96 pages for each rotation of the plate cylinder. Bundles of signatures are ejected one by one.

[Brief description of drawings]

FIG. 1 is a side view showing a drive system on a drive side of a folding machine according to an embodiment of the present invention.

FIG. 2 is a plan view showing a drive system on the folding machine operating side according to the embodiment of the present invention.

FIG. 3 is an explanatory perspective view showing the entire folding machine of the rotary press for books.

FIG. 4 is an enlarged explanatory view of a main part of FIG. 3;

FIG. 5 is a side view showing a conventional drive system on the folder driving side.

FIG. 6 is a plan view showing a conventional drive system on the folding machine operating side.

[Explanation of symbols]

1a, 1b Vertically cut running paper 1c Folding sheets 2a, 2b Upper triangular plate 3 Lower triangular plate 4 Cutting device 5a, 5b Impeller 6 Inversion cylinder 7a, 7b Paper discharge conveyor 10 Sorting device 11 Cam 12 Cam follower 13 Torsion bar 14 Sorting guide 20 Switching device 21 Clutch part 22 Speed change part 23a, 23b Air clutch 30 Switching device (for paper discharge conveyor) 31 Clutch part (for paper discharge conveyor) 32 Speed change part (for paper discharge conveyor) 33a, 33b Air clutch (discharge) (For paper conveyor) Sa, Sb Bundle of signatures A, B, C, D, E, F, G, H, J, K Timing belt M, N, P, Q, R Chain

Claims (1)

[Claims] 1. A signature is formed by a plurality of triangular plates arranged in the upper and lower stages and a cutting device, and the signature is inverted by one of the sheet discharging devices by a sorting device installed below the cutting device. In a folder configured to alternately distribute to the other sheet discharge device having a cylinder and stack and discharge the bundle of signatures coming out from both of the sheet discharge devices, the distribution to the drive system of the folder. The apparatus is provided with a switching device including means for switching the number of distributions per one rotation of the plate cylinder, means for switching the discharge speed ratio of the paper discharging apparatus, and means for switching the rotation ratio of the reversing cylinder. A folding machine with a switching device for the number of copies to be output.