JP6952012B2 - Downstream processing device and offset rotary press of offset rotary press - Google Patents

Description

The present invention relates to a downstream processing device and an offset rotary press of an offset rotary press, which are suitable for use in a commercial offset rotary press.

Newspapers are printed on a relatively large rotary press called a newspaper offset press. In a general newspaper, one page is B3 size, and two spread pages are one sheet. Therefore, the width of one newspaper has a long side width of B2 size. In a newspaper offset rotary press, double-sided printing is usually performed on a web (continuous paper) with a width of 4 pages (twice the width of a newspaper), and then divided into two in the width direction with a slitter to obtain a B2 long side width, and this B2 length is obtained. Fold each side-width web vertically in two with a triangular plate to make a short side width of B3, then cut it to a predetermined length with a folding machine, fold it in half, and eject it in parallel from the paper ejection part as a B4 size signature. And ship.

According to Patent Document 1, in a newspaper offset rotary press, a web having a long side width of B2 divided into two in the width direction by a slitter is vertically folded in two by a triangular plate, processed by a folding machine, and discharged in two rows in parallel. Two rows of webs and a web of B2 long side width divided into two in the width direction by a slitter are overlapped and vertically folded in two by one triangular plate, processed by a folding machine and discharged in one row. The technology that can switch is disclosed.

On the other hand, advertising leaflets are manufactured by a relatively small rotary printing press called a commercial offset rotary press. For example, when manufacturing a B4 size leaflet with a commercial offset rotary press, print on a web that is twice as wide (B2 size width) as the B4 leaflet, and then divide it into two in the width direction with a slitter and B4 long side. A web having a width is formed, and each web is cut into a predetermined length in parallel to form a sheet having a long side width of B4, which is discharged from each paper ejection section. In this case, since the web is not vertically folded, a simple and small cutting device not equipped with a triangular plate is applied.

Japanese Unexamined Patent Publication No. 11-35230

By the way, in recent years, B5 size leaflets obtained by folding B4 size in half have been used as so-called posting leaflets to be directly put into the mailbox of each individual house.
For this reason, there is also a demand for a commercial offset rotary press to print a B4 size leaflet and fold it in half to make it B5 size so that it can be discharged.

For this purpose, by adding a triangular plate on the upstream side of the small cutting device, it is possible to manufacture a bi-fold B5 size leaflet, but simply adding the triangular plate can be used for the web transport route peculiar to the small cutting device. Depending on the paper quality of the web, when the paper is folded vertically, cut to a predetermined length and discharged, wrinkles may occur in the vicinity of the vertically folded part in the transport and cutting process, or it may be appropriate in the transport and paper discharge process. It may not be possible to eject the paper.

The present invention was devised in view of such a problem, and it is possible to print a web having a long side width of B4, etc., fold it in half, and cut it to produce an appropriate signature and discharge the paper. It is an object of the present invention to provide a downstream processing device for an offset rotary press and an offset rotary press.

(1) The downstream processing device of the offset wheel of the present invention is a downstream processing device of the offset wheel that cuts and discharges the printed web, and is a cutting device that cuts the web to a predetermined length. A vertical folding device provided upstream of the cutting device and vertically folding the web along a triangular plate in a vertically downward direction to form a double web, and a vertical folding device provided downstream of the cutting device. A paper ejection device for stacking and discharging signatures formed by cutting a double web in a tile shape at a constant pitch, and the vertical folding device and the cutting device are provided between the vertical folding device and the cutting device. A downstream guide roller that changes the transport path of the double web between the cutting devices from the vertical downward direction to the horizontal direction and feeds the double web so as to match the transport direction of the double web that is cut by the cutting device. The outer diameter of the downstream guide roller is the minimum necessary for processing a single web that does not vertically fold the web with the upstream guide roller that guides the transportation of the web upstream of the vertical folding device. This is a downstream processing device for an offset wheeling machine, characterized in that the outer diameter is set larger than the reference outer diameter, which is the size of the outer diameter.

(2) The outer diameter of the downstream guide roller is preferably set to a size of 1.2 times or more and 3 times or less the reference outer diameter of the upstream guide roller .

According to the present invention, the outer diameter of the downstream guide roller is set to be larger than the reference outer diameter of the upstream guide roller that guides the transportation of the web upstream of the vertical folding device. Therefore, the web is vertically folded. In the transporting process of the formed double web, it is possible to suppress the occurrence of wrinkles in the vicinity of the vertically folded portion.

It is a side view which shows the offset rotary press which concerns on one Embodiment. It is a side view which shows the downstream processing apparatus of the offset rotary press which concerns on one Embodiment. 2 is a perspective view showing a usage mode of the downstream processing apparatus shown in FIG. 2, in which FIG. 2A shows a usage mode in which a B5 signature and a B4 propeller are manufactured in parallel, and FIG. The usage mode for manufacturing two systems in parallel is shown. 2A and 2B are views showing a triangular plate and a softening device of a vertical folding device of a downstream processing device shown in FIG. 2, where FIG. 2A is a side view of the triangular plate and FIG. 2B is a front view of the triangular plate. It is a figure which shows the front view of the web which passes through the nipping roller of the downstream processing apparatus shown in FIG. 2 is a view showing a nipping roller of the downstream processing apparatus shown in FIG. 2, where FIG. 2A is a side view taken along the conveying direction of the web, and FIG. 2B is an end view thereof. 5 is a pneumatic circuit diagram showing a nip pressure control system for the nipping rollers shown in FIGS. 5 and 6. It is a side view which shows the paper discharge device of the downstream processing apparatus shown in FIG. It is a roller side view which shows the axial arrangement of the brush roller of the paper ejection device shown in FIG. Is shown. It is a side view which shows the modification of the cutting apparatus shown in FIG. It is a roller end view which shows the modification of the brush roller of the paper ejection device shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
It should be noted that each of the embodiments shown below is merely an example, and there is no intention of excluding the application of various modifications and techniques not specified in the following embodiments. Each configuration of the following embodiments can be variously modified and implemented without departing from their gist, can be selected as necessary, or can be combined as appropriate.

[Offset rotary press]
The offset rotary press according to the present embodiment is a so-called commercial offset rotary press, and as shown in FIGS. 1 and 2, from the upstream side in the transport direction of the web, the paper feed unit 1, the in-feed unit 2, and the printing unit are used. 3. A downstream processing device 10 including a drying unit 4, a cooling unit 5, a web path unit 6, a vertical folding device 7, a cutting device 8, and a paper ejection device 9 is provided.

The paper feed unit 1 is provided with a reel stand (not shown) on which roll-shaped take-up papers 11A and 11B are mounted, and the new and old take-back papers are connected to each other during printing operation to continuously connect the base paper web 11 (hereinafter, hereinafter,). (Simply also called "web"). In FIG. 1, the winding paper 11B is in use, and the winding paper 11A is prepared for the next use. Here, as the web 11, a web 11 having a width twice the long side width of the B4 size is used.

The in-feed unit 2 continuously pulls out the web 11 from any of the take-up papers 11A and 11B by the in-feed roller, feeds the web 11 to the printing unit 3 on the downstream side, and controls the tension state of the web 11 on the downstream side. ..

In the printing unit 3, a plurality of sets of printing devices 31a to 31d having different ink colors are arranged side by side along the web traveling direction, and in the printing unit 3, the web 11 is sequentially passed through the printing devices 31a to 31d. Multicolor printing (for example, four-color printing of cyan, yellow, magenta, and black) is possible.

The web 11 that has finished printing in the printing unit 3 is heat-dried in the drying unit 4 in the next step, then cooled by the cooling unit 5 and conveyed to the web path unit 6.

In the web path portion 6, the web 11 is divided into two in the width direction, and for example, two webs having a long side width of B4 size, that is, one web 12a (first web) and one web 12b ( It is equipped with a slitter device (not shown) that forms the second web). In FIG. 1, only one web is shown on the downstream side of the web path portion 6, but this is one of the single web 12a and the single web 12b, and the single web 12a and the single web 12b. The other is not shown.

The single web 12a and the single web 12b are configured to be processed in parallel by the downstream processing device 10 on the downstream side of the web path portion 6. Therefore, the downstream processing apparatus 10 is provided in parallel with the first processing unit that processes the single web 12a and the second processing unit that processes the single web 12b. However, in FIG. 1, the downstream processing device 10 is shown focusing on one processing unit.

Further, the web path unit 6 is provided with a first web path route R1 that is passed through the vertical folding device 7 and a second web path route R2 that is not passed through the vertical folding device 7 for each of the single webs 12a and 12b. R2 is indicated by a chain double-dashed line.
When the first web path route R1 is selected and set, the single webs 12a and 12b are vertically folded by the vertical folding device 7 and conveyed to the cutting device 8 in the state of the double webs 13a and 13b. A plurality of vertical folding devices 7 (for example, two, only one is shown in FIG. 1) are provided.
When the second web path route R2 is selected and set, the single webs 12a and 12b are conveyed to the cutting device 8 as the single web without being vertically folded.

Therefore, for example, when the single web 12a passes through the first web path route R1 and the single web 12b passes through the second web path route R2, as shown in FIGS. 1 and 3 (a). The single web 12a is formed on the double web 13a by any of the two vertical folding devices 7, and then formed on the signature 15a by the downstream processing device 10, and the single web 12b is processed on the downstream side. It is formed on the pera-cho 14b by the device 10 and is discharged respectively.

Further, for example, when both the single webs 12a and 12b pass through the first web path route R1, the single webs 12a and 12b are formed by two vertical folding devices 7 as shown in FIGS. 1 and 3 (b). After being formed on the double webs 13a and 13b, they are formed on the signatures 15a and 15b by the downstream processing device 10 and discharged.

The cutting device 8 cuts the double webs 13a and 13b or the single webs 12a and 12b to a predetermined length.
In the paper ejection device 9, the double webs 13a and 13b are cut by the cutting device 8 to form the signatures 15a and 15b, or the single webs 12a and 12b are cut by the cutting device 8 to form the signatures 15a and 15b. 14a and 14b are discharged in a state of being stacked in a tile shape at a constant pitch.
Hereinafter, the downstream processing device 10 including the vertical folding device 7, the cutting device 8, and the paper ejection device 9 will be further described. Unless a special distinction is required, the single webs 12a and 12b will be referred to as the single web 12, and the double webs 13a and 13b will be referred to as the double web 13.

[Vertical folding device]
As shown in FIG. 1, the vertical folding device 7 includes a guide roller 71 at the entrance of the single web 12. The guide roller 71 changes the transport direction of the single web 12 sent from the upstream side to the vertically downward direction. A triangular plate 72 is provided on the downstream side of the guide roller 71. The bottom of the triangular plate 72 is directed toward the guide roller 71 upstream in the transport direction of the single web 12, and the apex thereof is arranged toward the downstream in the transport direction of the single web 12. A forming roller 73 arranged in a direction perpendicular to the axial direction of the guide roller 71 is provided downstream of the apex of the triangular plate 72.

The single web 12 enters the triangular plate 72 after the transport direction is changed to the vertical downward direction by the guide roller 71, and in the process of being conveyed vertically downward along the triangular plate 72, the apex portion of the triangular plate 72 It is folded vertically with the part in contact with the crease as a crease. As a result, the double web 13 is formed by vertically folding the single web 12 to a width of 1/2.

Here, a detailed configuration example of the vertical folding device 7 will be described. As shown in FIGS. 4A and 4B, the vertical folding device 7 includes a softening device 170 that supplies a liquid to a portion where a crease is formed in the single web 12 that enters the triangular plate 72. The softening device 170 includes a nozzle 171 and a support portion 172. The nozzle 171 injects a liquid such as water from the tip, and prevents cracks that occur in the creases when the single web 12 is vertically folded. The liquid is supplied from a source (not shown).

The support portion 172 is attached to the base portion 72a of the triangular plate 72, and is formed wider than the bottom portion of the triangular plate 72. A pair of arm portions 173 extending vertically upward are provided at both ends of the support portion 172. Here, as shown in FIG. 4B, the upper end of each arm portion 173 is bent at a position higher than the guide roller 71 and extends to the upstream side in the transport direction of the single web 12.

Between the tips of the pair of arm portions 173, a nozzle support shaft 174 arranged substantially parallel to the width direction of the single web 12 is provided. The nozzle 171 is supported on the nozzle support shaft 174 via a mounting portion 175. The mounting portion 175 is movably mounted with respect to the nozzle support shaft 174 in the axial direction, and the position of the nozzle 171 in the width direction can be finely adjusted by moving along the axis of the nozzle support shaft 174. ing. As a result, the axial position of the nozzle 171 can be accurately positioned so that the tip of the nozzle 171 is located at the position where the crease of the single web 12 is formed (the part of the imaginary line indicated by reference numeral 16). ..

Further, as shown in FIG. 4B, the mounting angle of the nozzle 171 with respect to the nozzle support shaft 174 is adjusted according to the inclination angle of the single web 12 on the upstream side of the guide roller 71, and the single web 12 The liquid is sprayed in a direction substantially perpendicular to the surface of the surface.

The nozzle 171 whose position is finely adjusted with respect to the triangular plate 72 is supported so as to be movable integrally with the triangular plate 72. Therefore, even when the triangular plate 72 moves in the width direction or the like according to the size of the single web 12 to be processed, the tip of the nozzle 171 is accurately positioned at the position where the crease of the single web 12 is formed. It is not necessary to move the nozzle 171 separately for the movement of the triangular plate 72, which simplifies the apparatus and reduces the manufacturing cost.

[Downstream guide roller]
As shown in FIG. 2, downstream guide rollers 101 and 102 and a nipping roller 110 are provided between the vertical folding device 7 and the cutting device 8. The guide roller is a roller that guides the transport routes of the web 11, the single web 12, and the double web 13, and is also provided on the upstream side of the vertical folding device 7, although not shown. Here, the guide roller on the upstream side of the vertical folding device 7 is referred to as an upstream guide roller, and the guide rollers 101 and 102 on the downstream side of the vertical folding device 7 are referred to as a downstream guide roller. Further, among the downstream guide rollers 101 and 102, those arranged on the upstream side are referred to as the first downstream guide roller 101, and those arranged on the downstream side are referred to as the second downstream guide roller 102. These downstream guide rollers 101 and 102 are formed in a columnar shape, respectively, and their axial directions are arranged parallel to the width direction of the double web 13 or the single web 12.

The first downstream guide roller 101 changes the transport direction of the double web 13 or the single web 12 vertically downward and obliquely upstream via the forming roller 73 to the vertically downward direction. .. The second downstream guide roller 102 changes the transport direction of the double web 13 or the single web 12 from the vertically downward direction to the horizontal direction. It should be noted that the "vertical downward direction" referred to here does not strictly refer to the downward direction of the vertical line, but also includes a slightly inclined direction. Similarly, the "horizontal direction" referred to here does not mean a strict horizontal direction, but includes a slightly inclined direction.
These downstream guide rollers 101 and 102 change the transport path of the double web 13 or the single web 12 between the vertical folding device 7 and the cutting device 8 and send them out to the cutting device 8 on the downstream side in the horizontal direction. However, this is adapted to the transport direction of the double web 13 or the single web 12 to be cut by the cutting device 8.

Large rotary presses such as newspaper offset presses cut and fold horizontally with a folding press while transporting the web vertically downward, whereas small rotary presses in commercial offset presses cut the web horizontally. Cut while transporting toward.
Therefore, in the downstream processing apparatus 10, the traveling direction of the double web 13 or the single web 12 is changed to the horizontal direction by the downstream guide rollers 101 and 102. In particular, the second downstream guide roller 102 changes the traveling direction of the double web 13 or the single web 12 by approximately 90 degrees from the vertically downward direction to the horizontal direction. The transport path in which the traveling direction of the double web 13 or the single web 12 changes at a steep angle is a configuration peculiar to the small cutting device 8.

By the way, in general, the smaller the outer diameter around which the web is wrapped, the larger the traveling direction of the web is changed by the guide roller, and the more difficult the web is to bend, the more easily the web is deformed or damaged. .. Therefore, in order to prevent the web from being deformed or damaged, the outer diameter of the guide roller may be increased, but in this case, the larger the outer diameter, the larger the device, which leads to an increase in weight and cost. Therefore, it is preferable to set the outer diameter of the guide roller to the minimum necessary size that does not easily cause deformation or damage to the web.

Since the double web 13 has increased rigidity at the vertically folded portion, it is less likely to bend than the single web 12, and when passing through a transport path that changes direction at such a steep angle, the double web 13 is along the downstream guide rollers 101 and 102. By bending, the vertical folds are deformed, and wrinkles are likely to occur near the folds.
Therefore, in the downstream processing device 10, the outer diameters of the downstream guide rollers 101 and 102 are set to be larger than the reference outer diameter of the upstream guide rollers. This makes it possible to prevent wrinkles from being generated at the creases even in the vertically folded double web 13. In particular, the outer diameter of the second downstream guide roller 102, in which the transport path is bent by approximately 90 degrees, is set large so that the effect of preventing the occurrence of wrinkles can be obtained.

The reference outer diameter of the upstream guide roller is the outer diameter of the main upstream guide roller. Since the upstream guide roller processes a single web 12 that does not have a highly rigid portion such as a vertically folded portion, the minimum required outer diameter of the upstream guide roller is larger than that of the downstream guide rollers 101 and 102. Of course, it's small. Therefore, the reference outer diameter of the upstream guide roller is set to the minimum required outer diameter. However, a part of the upstream guide roller may have an outer diameter other than the standard outer diameter (larger than the standard outer diameter).
The outer diameters of the first downstream guide roller 101 and the second downstream guide roller 102 are preferably set to a size of 1.2 times or more and 3 times or less the reference outer diameter of the upstream guide roller. .. For example, assuming that the reference outer diameter of the upstream guide roller is 70 mm, the outer diameter of the downstream guide rollers 101 and 102 can be set to 123 mm.

[Nippin roller]
As shown in FIG. 2, the nipping roller 110 is arranged between the first downstream side guide roller 101 and the second downstream side guide roller 102, and is in contact with both sides of the double web 13 or the single web 12, respectively. Consists of a pair of rollers. The nipping roller 110 sandwiches the double web 13 or the single web 12 conveyed via the first downstream guide roller 101 between roller pairs, and applies tension to the double web 13 or the single web 12. , Has the function of supplying to the downstream side.
Here, a configuration example of the nipping roller 110 will be described in detail. In FIG. 5, a first nipping roller 110a of the first processing unit and a second nipping roller 110b of the second processing unit are drawn. The first nipping roller 110a and the second nipping roller 110b of the second processing unit are arranged in parallel in the width direction of the double web 13 or the single web 12. In FIG. 5, a roller pair composed of a drive roller 111 and two driven rollers 112a and 113a constitutes a first nipping roller 110a, and a roller pair composed of a drive roller 111 and two driven rollers 112b and 113b is a second roller pair. The nipping roller 110b is configured. That is, one drive roller 111 is used by the first nipping roller 110a and the second nipping roller 110b.

As shown in FIG. 5, for example, a double web 13a (here, the first web) is supplied to the first nipping roller 110a, and the double web is provided by the driving roller 111 and the two driven rollers 112a and 113a. 13a is sandwiched. The driven rollers 112a and 113a are arranged so as to be located at both edges in the width direction of the double web 13a. That is, one driven roller (eg 112a) is located on the creaseless open side of the double web 13a and the other driven roller (eg 113a) is located on the crease side of the double web 13a.

On the other hand, a single web 12b (here, the second web) is supplied to the second nipping roller 110b, and the single web 12b is sandwiched between the driving roller 111 and the two driven rollers 112b and 113b. In this case, the driven rollers 112b and 113b are arranged so as to be located at both edges in the width direction of the single web 12b so as to be separated from each other in the width direction by the driven rollers 112a and 113a.

That is, the driven rollers 112a, 113a, 112b, 113b are configured so that their arrangement in the width direction (mutual spacing in the width direction) can be switched between the arrangement for the double web and the arrangement for the single web. For example, when processing a single web in the first nipping roller 110a, the position of the driven roller 112a in the width direction is moved and switched to the arrangement for the single web, as shown by the alternate long and short dash line in FIG. ..

A detailed configuration example of the nipping roller 110 will be described with reference to FIGS. 6A and 6B. Since the first nipping roller 110a and the second nipping roller 110b have the same configuration, the first nipping roller 110a will be described as an example.
The drive roller 111 is rotatably attached to a frame (not shown) and is rotationally driven by a drive device (not shown) connected to one end.
The driven rollers 112a and 113a are supported via support portions 115 attached to the support shaft 114, respectively, and the outer circumferences of the driven rollers 112a and 113a are arranged so as to abut on the outer circumference of the drive roller 111. NS.
Since the configuration of the support portion 115 is common to the driven rollers 112a and 113a, a common reference numeral is given to the corresponding component of each support portion 115.

The support shaft 114 is arranged parallel to the drive roller 111. The support portion 115 is attached to the support shaft 114 at one end thereof. The other end of the support portion 115 includes a bearing portion 116 that extends from the support shaft 114 toward the drive roller 111 and can be swung via the swing shaft 117. The driven rollers 112a and 113a are rotatably attached to the bearing portion 116 via the pivot 118.

The support portion 115 is configured to be movable in the axial direction with respect to the support shaft 114, that is, in the width direction of the double web 13 or the single web 12 by a moving device (not shown). By moving the support portion 115 in the width direction, the positions of the driven rollers 112a and 113a with respect to the drive roller 111 in the width direction can be changed. As a result, as described above, the arrangement of the driven rollers 112a and 113a in the width direction can be switched between the arrangement for the double web and the arrangement for the single web.

Further, as shown in FIG. 6B, the support portion 115 is provided with an air cylinder 120, and the air cylinder 120 is arranged so that the tip of the piston rod 121 abuts on the bearing portion 116. When the piston rod 121 moves forward or backward in response to expansion and contraction of the air cylinder 120, the driven rollers 112a and 113a approach or separate from the drive roller 111 while the bearing portion 116 swings around the swing shaft 117. Therefore, due to the expansion and contraction of the air cylinder 120, the pressing force of each of the driven rollers 112a and 113a on the drive roller 111, that is, depending on the state of the web to be processed (whether the double web 13 or the single web 12). The nip pressure can be adjusted. In the downstream processing device 10, the air cylinder 120 corresponding to each of the driven rollers 112a and 113a constitutes a nip pressure adjusting device that individually adjusts the nip pressure for each of the corresponding driven rollers 112a and 113a. Therefore, when processing the double web 13, the air cylinder 120 corresponding to each of the driven rollers 112a and 113a can individually adjust the nip pressure on the fold side of the double web 13 and the open side of the double web 13. Is.

FIG. 7 is a pneumatic circuit diagram showing a nip pressure control system. In FIG. 7, the air cylinder corresponding to the driven roller 112a is indicated by reference numeral 120a, and the air cylinder corresponding to the driven roller 113a is indicated by reference numeral 120b. The pneumatic circuit corresponds to one electromagnetic switching valve 130 that switches the supply and discharge of air, pressure adjusting valves 131a and 131b that can individually adjust the pressure for each of the air cylinders 120a and 120b, and air cylinders 120a and 120b, respectively. It is composed of a speed controller 132 that slows down the attachment / detachment operation of the driven rollers 112a and 113a with respect to the driving roller 111, and the compressed air supplied via the electromagnetic valve 130 is adjusted by the pressure adjusting valves 131a and 131b, respectively. The pressing force of the piston rod 121 of the air cylinders 120a and 120b can be individually controlled for each of the air cylinders 120a and 120b.

[Cutting device]
As shown in FIG. 2, the cutting device 8 has a saw cylinder 81 having two saw blades 83 and a receiver 82. The saw cylinder 81 and the receiver 82 are arranged so as to face each other with the transport path of the double web 13 or the single web 12 interposed therebetween, and the saw cylinder 81 is arranged on the upper side in the vertical direction and on the lower side. The receiver 82 is arranged in the body.
The saw body 81 is connected to a drive device (not shown), and is driven to rotate around a rotation axis (not shown) by driving the drive device. The two saw blades 83 are arranged at positions shifted by 180 ° in the rotational direction of the outer peripheral surface of the saw body 81. Further, each saw blade 83 is arranged so as to extend along the axial direction of the saw body 81 with its tip protruding from the outer peripheral surface of the saw body 81.

The receiver 82 is also connected to a drive device (not shown), and is driven to rotate around a rotation shaft (not shown) by driving the drive device. The receiver 82 is provided with a saw blade receiver 84 made of an elastic body such as rubber at a position corresponding to the rotation phase of the two saw blades 83 of the saw blade 81, and is doubled by the saw blade 83. When the web 13 or the single web 12 is cut, a reaction force is applied to the double web 13 or the single web 12 while elastically deforming the outer surface thereof in the thickness direction of the double web 13 or the single web 12. Promotes the entry of the saw blade 83. As a result, the saw cylinder 81 and the receiver 82 cut the double web 13 or the single web 12 to a predetermined length at regular intervals to form a signature 15 or a perforation 14 having a predetermined length. ..

[Paper ejection device]
As shown in FIG. 2, the paper ejection device 9 has a lower transfer speed than the first transfer conveyor 91 provided downstream of the cutting device 8 and the first transfer conveyor 91 provided downstream of the first transfer conveyor 91. A second conveyor 94 is provided.
The first transfer conveyor 91 is provided on the upper high-speed transfer belt portion 92 arranged upward across the transfer path of the folding chopsticks 15 and / or the propeller chopsticks 14, and the upper high-speed transfer belt portion 92 downward across the transfer path. It is composed of a lower high-speed conveyor belt portion 93 arranged so as to face each other.

The upper high-speed transfer belt portion 92 includes a plurality of (for example, four) pulleys 92a to 92d and endless belts 92A spanned by the pulleys 92a to 92d. The pulleys 92a to 92d are arranged so that their axial directions are the same as the width direction of the double web 13 or the single web 12. Further, the lower high-speed transport belt portion 93 is also composed of a plurality of (for example, four) pulleys 93a to 93d and endless belts 93A hung on these pulleys 93a to 93d. The pulleys 93a to 93d are arranged so that their axial directions are the same as the width direction of the double web 13 or the single web 12. Here, the endless belt 92A of the upper high-speed transport belt portion 92 and the endless belt 93A of the lower high-speed transport belt portion 93 are arranged so as to be in contact with each other with the transport path in between.

In the first conveyor 91, any one of the pulleys 92a to 92d of the upper high-speed conveyor belt portion 92 and any one of the pulleys 93a to 93d of the lower high-speed conveyor belt portion 93 are connected to drive motors (not shown). The upper high-speed conveyor belt portion 92 and the lower high-speed conveyor belt portion 93 are driven by this drive motor, respectively. The upper high-speed transfer belt portion 92 and the lower high-speed transfer belt portion 93 are driven at a constant speed.

The second transfer conveyor 94 includes a plurality of (for example, three) pulleys 94a to 94c and an endless flat belt 94A spanned by the pulleys 94a to 94c. The pulleys 94a to 94c are arranged so that their axial directions are the same as the width direction of the double web 13 or the single web 12. A paper discharge conveyor 95 is arranged downstream of the second conveyor 94.

In the second conveyor 94, any one of the pulleys 94a to 94c is connected to a drive motor (not shown) and driven by the drive motor. The second conveyor 94 is driven at a lower speed than the first conveyor 91 during normal operation.
Since the second conveyor 94 is driven at a lower speed than the first conveyor 91, each signature 15 or each propeller 14 conveyed from the first conveyor 91 is constant on the second conveyor 94. Stacked in a tile shape at the pitch of. In this way, the folding chopsticks 15 or the propeller chords 14 stacked in a tile shape at a constant pitch are delivered from the second conveyor 94 to the paper discharge conveyor 95, and are placed on the paper discharge conveyor 95 to discharge paper.

As shown in FIG. 2, a brush roller 96 is provided between the lower high-speed transfer belt portion 93 and the second transfer conveyor 94, that is, above the upstream of the second transfer conveyor 94. When the brush roller 96 delivers the signature 15 or the peller 14 from the first conveyor 91 to the conveyor 94, the brush roller 96 transfers the signature 15 or the peller 14 conveyed at a relatively high speed to the second conveyor 94. By dropping it on the flat belt 94A and pressing the signature 15 or the peller 14 against the flat belt 94A of the second conveyor 94, the function of reducing the transport speed of the signature 15 or the peller 14 is achieved.

Here, a detailed configuration example of the paper ejection device 9 will be described.
FIG. 8 is a schematic view showing the vicinity of the brush roller 96 of the paper ejection device 9 in an enlarged manner.
The brush roller 96 is arranged above the most upstream side (near the pulley 94a) of the conveyor 94, and has a roller shaft 900 arranged so as to extend in the width direction of the transport path of the folding chopstick 15 or the propeller chopstick 14. It consists of a brush 910 attached to a roller shaft 900. The brush 910 is configured so that the tips of the bristles protrude from two locations that face each other 180 degrees with the roller shaft 900 in between. The brush roller 96 is provided with a plurality of (for example, six) brushes 910 arranged along the roller shaft 900.

The brush roller 96 is configured to rotate the six brushes 910 clockwise in FIG. 8 by a drive device (not shown). Further, the peripheral speed of the brush roller 96, that is, the peripheral speed of the tip portion of the brush 910 is set to be constant or substantially constant with the moving speed of the transport surface (flat belt 94A) of the second conveyor 94. In FIG. 8, the pulley 93c of the lower high-speed conveyor belt portion 93 and the pulley 94a of the second conveyor conveyor rotate counterclockwise in FIG. 8, and the signature 15 or the peller 14 is from the right in FIG. It shall be transported to the left.

As shown in FIG. 8, the transport surface (flat belt 94A) of the second conveyor 94 is arranged at a position lower than the transport surface of the lower high-speed conveyor belt portion 93 of the first conveyor 91. Each of the signatures 15 or the propellers 14 formed by the cutting device 8 is sequentially sandwiched between the endless belt 92A of the upper high-speed transfer belt portion 92 and the endless belt 93A of the lower high-speed transfer belt portion 93. Is transported downstream and falls on a second conveyor 94 located downstream. At this time, since the brush 910 of the brush roller 96 is rotating clockwise at the entrance of the second conveyor 94, the tip of the rotating brush 910 is pressed against the folding chopstick 15 or the propeller chopstick 14, and the first The transfer speed of the signature 15 or the propeller 14 conveyed at high speed by the transfer conveyor 91 is reduced, and the signature 15 or the signature 15 or the perforator 14 is placed on the transfer surface (flat belt 94A) of the first transfer conveyor 91 to the second transfer conveyor 94. The conveyor belt 14 can be reliably dropped.

In the downstream processing device 10, the brush roller 96 arranges a plurality of brushes 910 according to the signature 15 or the peller 14 to be processed, and the brush arrangement for the peller shown in FIG. 9A and FIG. It is configured to be switchable to the brush arrangement for signatures shown in (b).
Here, the individual brushes 910 are equipped so as to be movable along the roller shaft 900, and the switching between the brush arrangement for the propeller and the brush arrangement for the signature is to switch the individual brushes 910 along the roller shaft 900. It is done by moving.
In the brush arrangement for the pella chopsticks shown in FIG. 9A, the six brushes 910 are arranged side by side with a relatively large interval within the long side width of the B4 size. Although the six brushes 910 are arranged at substantially equal intervals here, they do not necessarily have to be evenly spaced.

On the other hand, in the signature brush arrangement shown in FIG. 9B, the six brushes 910 are arranged side by side within the short side width of the B5 size with relatively small intervals. Therefore, in the folding brush arrangement, the six brushes 910 are arranged at a higher density with a narrower mutual spacing than in the pera-cho brush arrangement. In the example shown in FIG. 9B, the six brushes 910 are arranged at substantially equal intervals, but the brushes 910 do not necessarily have to be evenly spaced.

As described above, in the arrangement of the brushes for signatures, the brushes 910 are arranged at a higher density than the arrangement of brushes for propellers in order to surely decelerate the signatures 15. That is, although the width of the signature 15 is halved compared to the propeller 14, the weight itself is the same. It is equal to the reaction force applied to the brush roller 96 from the propeller chord 14 when the 14 is decelerated. Therefore, if the brush arrangement for the pera-cho is used as it is for the brush arrangement for the signature, only a part of the brush 910 contributes to the deceleration of the signature 15, and the signature 15 cannot be sufficiently decelerated. Therefore, in the arrangement of the brushes for signatures, the brushes 910 are arranged at a high density so that the signatures 15 are decelerated by using the number of brushes 910 equal to or substantially equal to the number of brushes 910.

As another example, the individual brushes 910 are provided so as to be detachable from the transport path of the folding chopstick 15 or the propeller chopstick 14. That is, the positions of the individual brushes 910 can be changed in the vertical direction with respect to the transport path of the folding chopsticks 15 or the propeller chords 14. In this case, as shown in FIG. 9A, the six brushes 910 are arranged side by side within the long side width of the B4 size at substantially equal intervals. Set everything in contact with the transport path (lower position). On the other hand, in the brush arrangement for signatures, only a part of the brushes 910 corresponding to the short side width of B5 size (for example, the three brushes 910 from the left end in FIG. 9A) are in contact with the transport path (lower). The position) is set, and the other brushes 910 are retracted to a position (upper position) away from the transport path.

[Action and effect]
According to the above embodiment, the outer diameter of the downstream guide rollers 101 and 102 is larger than the reference outer diameter of the upstream guide roller that guides the transportation of the web 11 or the single web 12 upstream of the vertical folding device 7. By setting a large value, it is possible to suppress the occurrence of wrinkles in the vicinity of the vertically folded portion in the transporting process of the double web 13.

Further, the nipping roller 110 is configured so that the nip pressure can be adjusted individually on the crease side of the double web 13 and the open side of the double web 13 by the air cylinder 120 provided for each of the driven rollers 112 and 113. Therefore, in the transporting process of the double web 13, it is possible to suppress the occurrence of wrinkles in the vicinity of the vertically folded portion due to the excess or deficiency of the nip pressure.

By providing the vertical folding device 7 with the softening device 170, it is possible to prevent cracks that occur in the creases in the process of vertically folding the single web 12.

Further, by configuring the softening device 170 so that the nozzle 171 is integrally movable with the triangular plate 72, the device for moving the nozzle 171 becomes unnecessary, so that the manufacturing cost can be reduced and the vertical folding position can be reduced. Can be softened properly.

Further, the web path unit 6 includes a first web path route R1 that allows the single web 12 to pass through the vertical folding device 7, and a second web path route R2 that does not allow the single web 12 to pass through the vertical folding device 7. The downstream processing device 10 can selectively form the folding chopsticks 15 and the propeller chords 14.

Further, the nipping roller 110 includes driven rollers 112a, 113a, 112b, 113b that can move in the axial direction, and by moving the driven rollers 112a, 113a, 112b, 113b in the axial direction, the arrangement for the double web can be achieved. Since it is configured to be switchable between the arrangement for the single web and the arrangement for the single web, both the double web 13 and the single web 12 can be appropriately nicked.

Further, the paper ejection device 7 is provided with a brush roller 96 for reducing the transfer speed of the signature 15 or the propeller 14 conveyed from the cutting device 8, and the brush roller 96 is for signature processing the signature. Since it is possible to switch between the brush arrangement and the brush arrangement for the peller chopsticks that process the pella chopsticks, both the folding chopsticks 15 and the pella chopsticks 14 can be appropriately decelerated.

Further, the downstream processing device 10 includes a slitter device upstream of the base paper web 11 having twice the width of the web to be processed, which is divided into two in the width direction after printing to form the first web 12a and the second web 12b. As a result, the formed first web 12a and second web 12b can be processed in parallel. Further, the vertical folding device 7, the cutting device 8, and the paper discharging device 9 form the first processing unit for processing the first web 12a, respectively, the first vertical folding device 7a, the first cutting device 8a, and the first paper discharging device. By providing the device 9a, the second vertical folding device 7b, the second cutting device 8b, and the second paper ejection device 9b constituting the second processing unit for processing the second web 12b, the signature 15 and the peller 14 can be selectively formed. This makes it possible to manufacture, for example, a B4 size propeller and a B5 size signature in parallel.

〔others〕
Although one embodiment of the present invention has been described above, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

[Modification 1]
FIG. 10 shows a modified example of the cutting device 8. The cutting device 8 is provided with a guide plate 85 that guides the lower surface of the double web 13 or the single web 12 to be processed upstream of the saw body 81 and the receiving body 82 (the entrance of the cutting device 8). An air outlet 86 is provided on the plate 85. Compressed air is supplied to the air outlet 86 from an air supply source (not shown), and the air outlet 86 blows out the compressed air supplied toward the double web 13 or the single web 12 passing through the upper part. Further, the guide plate 87 downstream of the saw body 81 and the receiving body 82 (the outlet of the cutting device 8) is provided with an air suction hole 88, and air is sucked downward by the air suction hole 88. A thin air layer is formed on the lower surface of the double web 13 or the single web 12 to be processed by suction of the compressed air blown out from the air outlet 86 and the air suction hole 88, and the double web 13 or the single web 12 is formed. Can be stabilized.

[Modification 2]
As a modification of the brush roller 96, as shown in FIG. 11, the brush 920 of the brush roller 96 may have the bristles on the front end side (front side in the rotation direction) shorter than the bristles on the rear end side. As a result, the pressing surface 921 at the tip of the brush 910 that holds down the folding chopsticks 15 or the propeller chords 14 is inclined rather than perpendicular to the extending direction of the bristles. With this configuration, the bristles of the brush 920 come into contact with the signature 15 or the propeller 14 over a wide range to apply a deceleration force. Is possible.

Further, as another example, the nipping roller 110 is provided so that the driven roller for the double web that processes the double web 13 and the driven roller for the single web that processes the single web can be exchanged with each other. May be good. In this case, when processing the double web 13, a driven roller for the double web may be attached, and when processing the single web 12, it may be replaced with a driven roller for the single web. Both the double web 13 and the single web 12 can be properly nicked by simply replacing the rollers. For example, the hardness of the outer surface of the driven roller for the double web is higher than the hardness of the outer surface of the driven roller for the single web.

Further, as another example, the brush roller 96 may be provided with a brush for a signature that processes the signature 15 and a brush for the flap that processes the brush 14 in an interchangeable manner. In this case, when processing the signature 15, the signature brush may be attached, and when processing the propeller 14, the brush may be replaced with the brush for the propeller. Both the folding chopsticks 15 and the propeller chords 14 can be appropriately decelerated simply by exchanging the brushes. It should be noted that the folding brush has at least one of the characteristics of, for example, that the brush has hard bristles, the brush has a high density of bristles, and is large in the width direction, as compared with the brush for pella chopping. ..

1 Feeding unit 2 In-feed unit 3 Printing unit 4 Drying unit 5 Cooling unit 6 Web path unit 7 Vertical folding device 8 Cutting device 9 Paper ejection device 10 Downstream processing device 11 Web 11A, 11B Rolling paper 12, 12a, 12b One sheet Web 13, 13a, 13b Double web 14 Pera cho 15 Fold cho 31a-31d Printing device 71 Guide roller 72 Triangular plate 73 Forming roller 81 Saw drum 82 Receiving barrel 83 Saw blade 84 Saw blade receiver 91 1st transport conveyor 94 2nd transport Conveyor 92 Upper high-speed transfer belt part 93 Lower high-speed transfer belt part 95 Paper discharge conveyor 96 Brush roller part 101 1st downstream side guide roller 102 2nd downstream side guide roller 110 Nipping roller 111 Drive roller 112a, 113a, 112b, 113b Driven Roller 114 Support shaft 115 Support 116 Bearing 117 Swing shaft 118 Pivot 120 Air cylinder 121 Piston rod 130 Electromagnetic switching valve 131a, 131b Pressure control valve 132 Speed controller 170 Softening device 171 Nozzle 172 Support 173 Arm 174 Nozzle support Shaft 175 Mounting part 900 Roller shaft 910 Brush R1 1st web path route R2 2nd web path route

Claims (2)

A downstream processing device for offset rotary presses that cuts and ejects printed webs.
A cutting device that cuts the web to a predetermined length,
A vertical folding device provided upstream of the cutting device and vertically folding the web while transporting the web vertically downward along a triangular plate to form a double web.
A paper ejection device provided downstream of the cutting device, in which signatures formed by cutting the double web are stacked in a tile shape at a constant pitch and discharged.
The double web transport path provided between the vertical folding device and the cutting device is changed from the vertical downward direction to the horizontal direction between the vertical folding device and the cutting device, and the cutting device is used for cutting. A downstream guide roller, which is fed so as to match the transport direction of the double web, is provided.
The outer diameter of the downstream guide roller is the minimum outer diameter necessary for processing a single web that does not vertically fold the web with the upstream guide roller that guides the transportation of the web upstream of the vertical folding device. A downstream processing device for an offset rotary press, characterized in that it is set to be larger than the standard outer diameter, which is the size of. The offset rotary press according to claim 1, wherein the outer diameter of the downstream guide roller is set to a size of 1.2 times or more and 3 times or less the reference outer diameter of the upstream guide roller. Downstream processing equipment .

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