JP3652885B2 - Rotary press folding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary machine of a rotary press.
[0002]
[Prior art]
Conventionally, most commercial prints such as newspaper leaflets and magazine cutouts have been printed mostly on web offset presses in order to meet short delivery times and high quality. These printed materials generally use B row paper, and in the case of flyer printing, a folded bi-fold signature, that is, a B4 size 4-page signature, is ejected, and the magazine's mouthpiece. In the case of printing, etc., a signature that is further folded in half and folded into four, that is, a B5 size 8-page signature is discharged.
FIGS. 7 and 8 are perspective views showing the most standard B-rotary commercial web offset presses conventionally used for this type of printing.
[0003]
In these rotary presses, the full width continuous paper W printed by a printing section (not shown) is vertically halved at the center of the paper width along the paper flow direction by the slitter 2 disposed at the entrance of the folding machine. The continuous papers Wa and Wb that have been cut and then half-width proceed in the direction of the arrows, respectively, and enter the cutting / folding part of the folding machine in two rows.
The cutting / folding portion of the folding machine shown in FIG. 7 is a known three-cylinder type constituted by a saw cylinder 31, a folding cylinder 32, and a holding cylinder 33. Further, the cutting / folding portion of the folding machine shown in FIG. 8 is a known two-cylinder type constituted by a folding cylinder 42 with a saw blade and a holding cylinder 43. The surface lengths of the cylinders of these cutting / folding parts are both double-width, and the half-width continuous papers Wa and Wb which are entered in two rows on the same surface are simultaneously saw cylinder 31 and folding cylinder. 32 or between the folding cylinder 42 with a saw blade and the holding cylinder 43, and is cut to a predetermined size, that is, a B3 length, and then between the folding cylinder 32 and the holding cylinder 33 or between the folding cylinder 42 with a saw blade and the holding cylinder 43. The sheet is folded in half in parallel to the cutting line and folded in half to a size of 4 pages of B4 size. Each of the folded signatures Sa and Sb is conveyed at a constant pitch one by one, and is discharged from the discharge conveyor 38 through the impeller 37 into two rows.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional commercial rotary press, the surface length of each cylinder is doubled, and the signatures Sa and Sb formed by the cutting / folding portions are arranged in two rows one by one. Since the paper is discharged from the paper discharge conveyor 38, there are the following problems.
(1) Since the frame interval of the folding machine is wide and the surface length of each cylinder and rollers is long, there are some parts that are difficult to maintain and inspect the machine, and it is difficult to further increase the machine rigidity. I could not expect further speedup.
(2) Since the signatures Sa and Sb are ejected out of the machine in two rows from the delivery conveyor, two lines of post-processing equipment such as a stacker, packaging and binding machine are required, and a total including the rotary press The capital investment cost increased and a large installation space was required.
(3) Since the two-fold signatures Sa and Sb formed at the cutting / folding part are conveyed one by one, the paper discharge is more likely to be disturbed at higher speeds for lightweight paper, and the operation speed is reduced. I had to.
[0005]
Accordingly, the present invention solves the above-described problems, enables one-line ejection of signatures by a half-width folding machine, is economical, has good workability, and can cope with space saving and high speed. The purpose is to provide a folding machine.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the rotary machine of the rotary press according to the present invention longitudinally cuts the center of the continuous paper in the width direction along the running direction, and cuts the half-width continuous paper into a predetermined length. In the rotary machine of the rotary press that folds in half parallel to the cutting line and discharges the signature, two sets of cutting and folding means having a size corresponding to the half-width continuous paper are arranged in the upper and lower stages, A signature stacking means is provided between these two sets of cutting / folding means, a signature is formed by the cutting / folding means, and the signature is overlapped by the signature stacking means and sent out. doing.
As the cutting / folding means, for example, a three-cylinder type including a saw cylinder, a folding cylinder and a holding cylinder can be adopted, while a two-cylinder cutting / folding means including a folding cylinder with a saw and a holding cylinder is adopted. Folding means can also be employed. When a two-cylinder cutting / folding means is employed, a saw cylinder is not required, and the structure is compact.
The signature stacking means is for overlapping and discharging two signatures discharged from the upper and lower cutting / folding means. The signature stacking means can be composed of a transfer cylinder and a paper guide device. It is preferable that the transfer cylinder is disposed adjacent to the upper holding cylinder and the lower holding cylinder and rotates at the same diameter and speed as these holding cylinders. The paper guide device is preferably configured such that two signatures fed from the upper and lower holding cylinders overlap each other on the outer peripheral surface of the transfer cylinder.
[0007]
Further, in the rotary machine of the rotary press according to the present invention, the signature stacking means includes a transfer cylinder and a paper guide device, and the transfer cylinder is rotationally driven at a constant speed with each cylinder of the cutting / folding means, The paper guide device conveys the signatures formed by the upper and lower trimming / folding means so as to overlap each other on the outer peripheral surface of the delivery cylinder, and delivers it to the conveyor belt of the paper ejection means. It is composed.
The paper discharge means conveys the overlapping signatures discharged from the signature stacking means and discharges them outside the apparatus. The paper discharge means preferably includes upper and lower conveyor belts, an impeller, and a paper discharge conveyor for conveying the stacked signatures discharged from the transfer cylinder.
As described above, the rotary machine of the rotary press according to the present invention has a size corresponding to one row of half-width continuous paper, and has a size corresponding to two rows of half-width continuous paper. Compared to the above, since the frame interval is narrow and the surface length of each cylinder and rollers is short, the mechanical rigidity becomes high, the rotary press can be stably operated at high speed, and the maintenance and inspection of the machine becomes easy.
In addition, the folding machine according to the present invention is ejected in a row with two copies of the signatures overlapped, so that the folding machine is ejected in two rows of the signatures one by one. In addition, a single line of post-processing equipment such as a stacker, packaging / bundling machine, and the like, installation space for the folding machine and post-processing equipment, running cost, and overall capital investment can be reduced.
Furthermore, since the folding machine according to the present invention is transported in a state in which the signatures are stacked two by two, there is no disturbance of paper discharge even when printing lightweight paper, and high speed operation is possible.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First embodiment Fig. 1 to Fig. 3 show a folding machine of a rotary press according to a first embodiment of the present invention. The folding machine is applied to a B vertical half-cut commercial offset rotary press, and as shown in FIG. 1, upper and lower cutting / folding means 10a, 10b, signature stacking means 3, and paper discharge means. 4 is provided. Further, the full width continuous paper W sent to the folding machine after being printed is drawn into the folding machine by the drag roller 1, and is longitudinally cut along the running direction by the slitter 2 to a half width at the center of the drag roller 1, The paper is divided into Wa and Wb which are half-width continuous paper. Next, the half-width continuous papers Wa and Wb are sent to the cutting and folding means 10a and 10b described below through the reversing rollers 60 and 61 and the plurality of roller groups 62.
[0009]
This cutting / folding means 10a, 10b cuts half-width continuous papers Wa, Wb along the circumference of the plate cylinder, and folds them in half in parallel to the cutting line to form folded signatures Sa, Sb. These are known three-cylinder types each consisting of saw cylinders 11a, 11b, folding cylinders 12a, 12b, and holding cylinders 13a, 13b.
As shown in FIG. 2, half-width continuous papers Wa and Wb longitudinally cut by the slitter 2 are cut into the respective saw cylinders 11a and 11b by predetermined lengths substantially perpendicular to the running direction. A pair of saw blades 5 are provided, and each folding cylinder 12a, 12b is hooked with a saw blade receiver 6 for receiving the saw blade 5 and a leading edge in the rotational direction of the cut paper cut by the saw blade 5. Two sets of each of the needle device 7 provided with the cam mechanism and the folding blade device 8 provided with a cam mechanism for folding the cut paper in half, protruding in a bisecting position in the rotation direction of the cut paper are provided. Yes. Each of the holding cylinders 13a and 13b is provided with two sets of holding apparatuses 9 each having a cam mechanism for holding the folding line portion of the cut paper protruding by the folding blade apparatus 8 of the folding cylinders 12a and 12b. .
[0010]
The signature stacking means 3 superimposes and discharges the signatures Sa and Sb discharged from the upper and lower cutting / folding means 10a and 10b. The signature stacking means 3 includes a transfer cylinder 14 and a paper guide device 19. As shown in FIG. 3, the transfer cylinder 14 is disposed at a position adjacent to the upper holding cylinder 13a and the lower holding cylinder 13b, and has the same diameter as the holding cylinders 13a and 13b (etc.). The paper guide device 19 is configured such that the signatures Sa and Sb fed from the upper and lower holding cylinders 13a and 13b are transferred to the transfer cylinder 14. It arrange | positions in order to introduce | transduce so that it may overlap on the outer peripheral surface. This paper guiding device 19 is in contact with the outer peripheral surface of the transfer cylinder 14 and is also used for conveying the signatures Sa and Sb to the paper discharge means 4, and the outer peripheral surface of the upper holding cylinder 13a and the upper conveying belt. The upper paper guide belt 16a that contacts the outer peripheral surface of 15a, the lower paper guide belt 16b that contacts the outer peripheral surface of the lower holding cylinder 13b and the outer peripheral surface of the upper transport belt 15a, and the outer peripheral surface of the lower paper guide belt 16b And a middle paper guide belt 16c.
[0011]
The paper discharge means 4 conveys the overlapping signatures Sa and Sb discharged from the signature stacking means 3 and discharges them outside the apparatus. The paper discharge means 4 includes upper and lower transport belts 15a and 15b for transporting the stacked signatures Sa and Sb discharged from the transfer cylinder 14, a known impeller 17 and a paper discharge conveyor 18. .
Furthermore, in the folding machine according to the first embodiment, as shown in FIG. 2, the folded folding signatures Sa and Sb conveyed by the conveying belts 15a and 15b are separated from the cutting line. A known right angle folding device 50 for folding in half in the perpendicular direction is provided. In FIG. 1, the upper transport conveyor 15a is omitted for the sake of clarity.
[0012]
The operation of the rotary press folding machine according to the first embodiment having the above-described configuration will be described below.
A case will be described in which the folding machine according to the first embodiment is used to superimpose, that is, to fold and discharge the signatures Sa and Sb that are folded in two to a size of 4 pages of B4 size. First, as shown in FIG. 1, the full width continuous paper W sent to the folding machine is passed between the drag roller 1 and the slitter 2 and cut into half widths at the center position of the paper width. Next, as shown in FIG. 2, one of the two continuous papers Wa is passed between the upper saw cylinder 11a and the folding cylinder 12a, and the other continuous paper Wb is passed between the lower saw cylinder 11b and the folding cylinder 12b. Do the paper thread through.
When the rotary press is started after the paper is threaded in this state, the half-width continuous papers Wa and Wb which are printed and divided and sent are the saw blade 5 and the folding cylinder 12a of the saw cylinders 11a and 11b, respectively. , 12b is cut into a predetermined length, that is, a length of B3 size, and is folded in half by the folding blade device 8 of the folding cylinders 12a, 12b and the holding device 9 of the holding cylinders 13a, 13b. That is, the four-page B4 size signatures Sa and Sb are formed.
[0013]
The folded signature Sa formed between the upper folding cylinder 12a and the holding cylinder 13a has a folding line portion added to the holding apparatus 9, and rotates to a predetermined angle along the outer periphery of the holding cylinder 13a. It is released from the holding device 9. The signature Sa released from the holding device 9 is sandwiched between the upper paper guide belt 16a and the upper transport belt 15a and transported along the outer periphery of the transfer cylinder 14 as shown in FIG.
On the other hand, the folded signature Sb formed between the lower folding cylinder 12b and the holding cylinder 13b is rotated by a predetermined angle along the outer periphery of the holding cylinder 13b, with the folding line portion being held by the holding apparatus 9. And released from the holding device 9. As shown in FIG. 3, the signature Sb released from the holding device 9 is sandwiched between the lower paper guide belt 16b and the middle paper guide belt 16c and is conveyed along the outer periphery of the holding cylinder 13b.
[0014]
Here, the front end of the signature Sa released from the restrained state by the upper paper guide belt 16a immediately before the position where the transfer drum 14 and the lower holding drum 13b contact each other is folded from the restrained state by the middle paper guide belt 16c. Since it is configured so as to coincide with the leading end of the stake Sb, the signatures Sa and Sb released from the respective paper guide belts 16a and 16c overlap with each other with the leading ends aligned with the upper conveying belt 15a. It is sandwiched between the lower paper guide belts 16b. The signatures Sa and Sb overlapped in two parts are conveyed by a certain distance in this state, and then sandwiched between the lower conveyance belt 15b and the upper conveyance belt 15a connected to the lower paper guide belt 16b, The paper is conveyed at a pitch and is discharged out of the apparatus by a paper discharge conveyor 18 through an impeller 17.
[0015]
In addition, if the right-angle folding device 50 provided in the conveying path of the upper and lower conveying belts 15a and 15b is used, the two-fold folded two-pieces that are sandwiched and conveyed between the upper and lower conveying belts 15a and 15b are stacked. The signatures Sa and Sb are folded in half in a direction perpendicular to the cutting line while being overlapped, and the signatures folded in four on the B5 size 8 pages can be discharged in a state where two copies are overlapped.
[0016]
Second embodiment Next, a rotary machine of a rotary press according to a second embodiment will be described with reference to Figs. The cutting / folding means 10a, 10b in the first embodiment, as shown in FIG. 4, is a three-cylinder system composed of saw cylinders 11a, 11b, folding cylinders 12a, 12b, and holding cylinders 13a, 13b. The cutting / folding means 20a, 20b in the second embodiment is a known two-cylinder system composed of folding cylinders 22a, 22b with saw blades and holding cylinders 23a, 23b. As shown in FIG. 5, the folding blades 22a and 22b with saw blades are provided with two sets of saw blades 5, needle devices 7 and folding blade devices 8, respectively, and the holding drums 23a and 23b have saw blade receivers. 6 and two holding devices 9 are provided.
Further, the paper guiding device 29 of the signature stacking means in the second embodiment includes a lower transport belt 25b that contacts the outer peripheral surface of the transfer cylinder 14 and also serves to transport the signature to the paper discharge means, and an upper holding cylinder. The upper paper guide belt 26a that contacts the outer peripheral surface of the lower conveyance belt 25b, the lower paper guide belt 26b that contacts the outer peripheral surface of the lower holding belt 23b and the outer peripheral surface of the lower conveyance belt 25b, and the upper paper It comprises a middle paper guide belt 26c that contacts the outer peripheral surface of the guide belt 26a. In FIG. 4, the upper transport conveyor 25a is omitted for the sake of clarity.
The other configuration is the same as that of the folding machine in the first embodiment, and thus the description thereof is omitted.
[0017]
The operation of the rotary press folding machine according to the second embodiment having the above configuration will be described below. A case will be described in which the folding is performed by using the folding machine in the second embodiment, that is, the signatures Sa and Sb folded in half to the size of 4 pages of B4 size are overlapped and ejected two by two. As shown in FIGS. 4 and 5, first, the full width continuous paper W that is printed and sent to the folding machine is vertically cut into half widths at the center position of the paper width by the slitter 2, and divided into Wa and Wb. Among these, one continuous paper Wa is passed between the upper folding cylinder 22a with the saw blade and the holding cylinder 23a, and the other continuous paper Wb is passed between the lower folding cylinder 22b with the saw blade and the holding cylinder 23b. Thread through.
When the rotary press is started after the web threading, the continuous papers Wa and Wb have a predetermined length by the saw blade 5 of the folding cylinders 22a and 22b with saw blades and the saw blade receiver 6 of the holding cylinders 23a and 23b, respectively. It is cut at a right angle to the running direction to a B3 size length. After this cutting, the folding blade device 8 of the folding cylinders 22a, 22b with saw blades and the holding device 9 of the holding cylinders 23a, 23b form folded signatures, that is, B4 size 4-page signatures Sa, Sb.
The folded signature Sa formed between the upper folding cylinder 22a with a saw blade and the holding cylinder 23a is rotated by a predetermined angle along the outer periphery of the holding cylinder 23a with the folding line portion being held by the holding apparatus 9. Moving. Next, the paper is sandwiched between the middle paper guide belt 26 c and conveyed along the outer periphery of the holding cylinder 23 a toward the position where it comes into contact with the transfer cylinder 14. During this time, the signature Sa is released from the holding apparatus 9.
[0018]
On the other hand, the folded signature Sb formed between the lower-stage folding cylinder 22b with a saw blade and the holding cylinder 23b has a folding line portion added to the holding apparatus 9, and a predetermined angle along the outer periphery of the holding cylinder 23b. And is released from the holding device 9. The signature Sb released from the holding device 9 is nipped between the lower paper guide belt 26b and the lower conveyance belt 25b and conveyed along the outer periphery of the transfer cylinder 14.
Here, the front end of the signature Sa released from the restrained state by the middle paper guide belt 26c immediately before the position where the transfer drum 14 and the upper holding drum 23a contact each other is folded from the restrained state by the lower paper guide belt 26b. Since it is configured so as to coincide with the leading end of the stake Sb, the signatures Sa and Sb released from the respective paper guide belts 26b and 26c overlap with each other in a state where the respective leading ends are aligned, and the upper paper guide belt 26a. And the lower conveyor belt 25b. The signatures Sa and Sb overlapped in two parts are conveyed by a certain distance in this state, and then sandwiched between the upper conveyance belt 25a and the lower conveyance belt 25b connected to the upper paper guide belt 26a, It is conveyed toward the impeller 17 at a pitch. The subsequent movements are the same as in the first embodiment.
In the folding machine according to the second embodiment, as described above, the cutting / folding means 20a, 20b is a two-cylinder system including the folding cylinders 22a, 22b with saw blades and the holding cylinders 23a, 23b. Compared with the folding machine according to the first embodiment, the saw cylinders 11a and 11b are not necessary, and thus the same function as the folding machine in the first embodiment can be obtained with a compact structure.
[0019]
【The invention's effect】
As described above, the rotary machine of the rotary press according to the present invention is provided with two sets of cutting / folding means having a size corresponding to half-width continuous paper in the upper and lower stages, and formed by the respective cutting / folding means. The structure is such that folded signatures are stacked and ejected via a common transfer cylinder, so that a single row of signatures can be ejected by a half-width folding machine, which is economical, easy to work with and saves space. It can cope with speeding up.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an entire folder of a rotary press according to a first embodiment of the present invention.
FIG. 2 is a side view showing the main part of FIG. 1;
FIG. 3 is a schematic view showing a state in which signatures are stacked on the transfer cylinder of the folding machine according to the first embodiment.
FIG. 4 is a perspective view showing the entire folding machine of a rotary press according to a second embodiment of the present invention.
5 is a side view showing the main part of FIG. 4;
FIG. 6 is a schematic view showing a state in which signatures are stacked on the transfer cylinder of the folding machine according to the second embodiment.
FIG. 7 is a perspective view showing a folder of a conventional commercial web offset press.
FIG. 8 is a perspective view showing a folder of a conventional commercial offset rotary press.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drag roller 2 Slitter 3 Folding means 4 Discharge means 5 Saw blade 6 Saw blade receiver 7 Needle device 8 Folding blade device 9 Holding devices 10a, 10b, 20a, 20b Cutting and folding means 11a, 11b Saw cylinders 12a, 12b, 22a, 22b Folding cylinders 13a, 13b, 23a, 23b Holding cylinders 14 Transfer cylinders 15a, 25a Upper conveying belts 15b, 25b Lower conveying belts 16a, 26a Upper paper guiding belts 16b, 26b Lower paper guiding belts 16c, 26c Middle paper guiding belts 17 Impeller 18 Discharge conveyor 19, 29 Paper guide device 50 Right angle folding device 60, 61 Reverse roller 62 Roller group W Full width continuous paper Wa, Wb Half width continuous paper Sa, Sb Signature

Claims (1)

Cut the center of the continuous paper in the width direction along the running direction, cut the half-width continuous paper obtained in this way approximately at right angles to the running direction, and then fold it in half in parallel to the cutting line. In the folding machine of the rotary press that discharges paper, cutting and folding means having a size corresponding to the half-width continuous paper are arranged in the upper and lower stages of the folding machine, and the signatures are stacked between the cutting and folding means. A signature is formed by the cutting / folding means, and the signature is overlapped and sent out by the signature stacking means. The signature stacking means includes a transfer cylinder, a paper guide device, and the like. The transfer cylinder is driven to rotate at a constant speed with each cylinder of the cutting / folding means, and the paper guide device transfers each signature formed by the upper and lower cutting / folding means to the transfer cylinder. Outer peripheral surface Folding machine of a rotary press, characterized by being configured to carry clamped to overlap with.

Images