JP3408799B2 - Sheet guide device for sheet-fed duplex printing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet guide apparatus for a double-sided sheet-fed printing press, which is installed below a reversing cylinder and is intended to stably convey a printed sheet to a downstream side. is there.

[0002]

2. Description of the Related Art Conventionally, a plurality of sets of printing devices having different ink colors are juxtaposed in a tandem manner, and the printing surface is reversed between the printing device group on the front side and the printing device on the back side. Multicolor double-sided sheet-fed printing presses for printing are known. As shown in FIG. 12, which is an overall schematic configuration explanatory view of a general sheet-fed printing machine showing the configuration thereof, the printing machine has a sheet feeding device 32, a cyan,
A plurality of sets of front side printing devices (14a) and (14b) for magenta, yellow, black and the like, and a plurality of sets of back side printing devices (14c) for cyan, magenta, yellow, black and the like arranged downstream of the reversing cylinder. , (14n) are arranged in a tandem arrangement on the front and back side printing unit section 14, the sheet stacking apparatus 39 installed in the sheet discharging apparatus 33 section, and the like.

The respective functions will be briefly described. The sheet feeding device 32 stacks the sheets 10 to be printed on a sheet feeding table, and the sheets 10 are sequentially printed one by one in the printing device 14 in the next step. Is a device for supplying to.

The next printing unit section 14 usually has a plurality of sets of printing devices 1 for printing with inks of cyan, magenta, yellow, black, etc., and other special color inks.
4a to 14n are arranged side by side along the sheet traveling direction, and the sheet 10 continuously fed from the sheet feeding device 32 is passed through a claw device provided on the impression cylinder 16 and the intermediate cylinder 34. The inks are sequentially transferred to the downstream side, and on the way, inks of necessary colors are transferred one after another. Each printing device 14a ...
Then, after adjusting a necessary amount of ink with an inking device (not shown), the ink is supplied to the plate 36 mounted on the plate cylinder 35, and the plate 3
Printing is performed by further transferring the ink transferred to the pattern portion of 6 to the blanket cylinder 37, and transferring the ink on the outer peripheral surface of the blanket cylinder 37 to the sheet 10 conveyed between the blanket cylinder 37 and the impression cylinder 16. It is supposed to be done. The sheet 10 after printing is transferred to the downstream sheet discharge device 33. The next 33 sheets of the sheet discharging device are composed of a sheet conveying device 38 and a sheet stacking device 39 as shown in FIG.

By the way, in the sheet-fed printing press illustrated in FIG. 12, the reversing cylinder 1 is interposed between the front end side of the printing device 14b on the front side and the start side of the printing device 14c on the back side, and By reversing the sheet 10 with the printed side, two colors can be printed on each of the front and back sides.

Under the above-mentioned structure, the sheet 10 on which the printing of the first color is finished is printed on the impression cylinder 16a of the first printing device 14a.
From the intermediate cylinder 34 to the impression cylinder 16 of the second printing device.
Handed over to b. After that, sheet 1 by reversing cylinder 1
0 is reversed, and thereafter, it is sequentially transferred to the third and fourth printing devices 14c that print on the back side, and the target multicolor printing is performed on both the front and back sides. As shown by 12, the reversing cylinder 1 includes a final impression cylinder 16b of the front side printing apparatus and a first impression cylinder 16c of the back side printing apparatus.
The sheet bottom of the sheet 10 which is rotationally transferred from the impression cylinder 16b to the single-cylinder intermediate cylinder 48 and the reversing double-drum intermediate cylinder 49 having a claw is gripped and reversely transferred in the opposite direction. Subsequently, as shown in FIG. 11, which is an explanatory view of a configuration example of a reversing cylinder part provided in a double-sided sheet-fed printing machine, the sheet 10 is transferred from a claw 1a of the reversing cylinder 1 to a claw device of an impression cylinder 16c, As a result, the back surface of the sheet 10 becomes the outer peripheral surface of the impression cylinder 16c, and the back surface can be printed.

The sheet 10 which has been subjected to the predetermined multicolor printing as described above is discharged from the impression cylinder 16n of the final printing device 14n to the sheet discharge shaft 4a.
0 is passed to the chain gripper 42 provided in the endless chain 41 that travels by winding 0, and the chain gripper 42
After being transferred to the sheet discharge table of the sheet stacking device 39 in the state of being gripped by, the sheets are dropped and stacked on the sheet discharge table. The sheet stacking device 39 is shown in FIG.
As shown in FIG. 5, a paper pad 43 is provided on the upper side of the downstream side, and the sheets 10 that have fallen are brought into contact with the paper pad 43 so that their front ends are aligned and stacked on the paper ejection table of the same portion. .

In the sheet-fed printing press, the sheet 1 immediately after printing, that is, the transferred ink is not completely dried.
Since 0 is conveyed, various types of sheet guide devices have been proposed today in order to suppress the occurrence of various troubles such as dirt, scratches and tears of the sheet 10. In particular, in the case of a double-sided printing machine, printing is performed on both the front and back sides of the sheet 10, so a higher-performance guide is required. For example, as an example of the sheet guide device installed below the reversing cylinder 1, there is a type shown in FIG. FIG. 10 is an explanatory diagram of a configuration example of a conventional sheet guide device disposed below a reversing cylinder, which is interposed between a front side printing device and a back side printing device which are arranged in a tandem shape in a double-sided sheet-fed printing machine. Is. In this device, a sheet guide 44 formed of a single flat plate material is arranged under the reversing cylinder 1. A pair of support members vertically hangs down in the sheet traveling direction of the sheet guide 44. It is fixed to a frame 9 on the lower surface side of the device via a fixing member 45. With the above structure, the sheet guide 44 corrects and improves the running posture by sliding the sheet 10 against the corrugation of the sheet below the reversing cylinder 1.

[0009]

However, the conventional sheet guide device provided below the reversing cylinder has the following problems. In the double-sided sheet-fed printing apparatus, the front and back of the sheet (printing paper) 10 are reversed by the reversing cylinder 1 as described above, and the printing surface printed by the printing apparatus in the previous step faces the sheet guide surface (flat plate material) 44, The surface immediately after printing comes into contact with the flat plate material 44. Further, since the conventional sheet guide has a fixed height and a tilt angle of the guide surface, it does not function effectively against sheets of various specifications, so that the sheet is deformed or the printed pattern surface is scratched. It was observed that the product was mixed with the product and stains were generated. Further, the conventional seat guide has a small function of improving the waviness of the seat, the flap of the seat cannot be removed, and the running posture is not stable. For this reason,
The fluttering affects the printing apparatus in the next step, and the print quality is degraded. Further, various problems occur such that the sheet conveyance posture with respect to the printing apparatus in the next step is unstable, the reliability of delivery and the like is deteriorated, and the print quality is deteriorated.

As a technique similar to the present invention, in a sheet-fed printing apparatus for single-sided printing, an example of a sheet guide apparatus installed below an intermediate cylinder 34 for delivering a printing sheet to the next color is shown in FIG. The sheet guide device shown has been already proposed as Japanese Patent Laid-Open No. 10-109404. According to such a technique, for example, a sheet guide device installed along the outer periphery of the intermediate body 34 is configured by an air box 51, and a plurality of nozzle-shaped air outlets 50 are formed on the surface of the air box 51.
50 are provided and the air outlets 50, 50 ...
The air flow is further discharged toward the upstream side of the sheet to regulate the sheet at a predetermined position, thereby stabilizing the traveling of the sheet.

That is, in the above-mentioned prior art, the direction along the sheet guide from the air outlets 50, 50 ... along the guide gap between the intermediate cylinder 34 and the seat guide surface having the air duct on the lower surface. Since the air is ejected to the sheet 10, the sheet 10 conveyed along the peripheral surface of the intermediate drum 34 is sucked and slightly moved toward the sheet guide surface side by the Bernoulli effect due to the difference in the flow velocity of the air flow between the upper and lower surfaces of the sheet 10. After being transported while being floated, it is transferred to the next-stage impression cylinder 16.

However, unlike the case of the intermediate body 34,
In the case of the reversing cylinder 1, since the seat 10 is reversed and delivered to the next impression cylinder 16, the corrugation of the seat 10 is large, and one air box 51 is formed in a concentric arc shape along the outer circumference of the intermediate cylinder 34. Even if they are arranged, the pressure corresponding to the corrugation cannot be finely controlled along the conveyance direction of the sheet 10, and even if the specifications such as the thickness of the sheet 10 are different, the distance between the reversing cylinder 1 and the sheet guide can be changed. Since the sheet 10 cannot be conveyed, the transporting posture of the sheet 10 is unstable, reliability of delivery and the like is deteriorated, and print quality is deteriorated.

SUMMARY OF THE INVENTION In view of these problems, an object of the present invention is to provide an improved sheet guide device which prevents the sheet from waving and fluttering and stabilizes the running posture.

[0014]

In order to solve the above-mentioned problems, the present invention has a plurality of printing devices arranged in tandem along the sheet conveying direction, and a sheet front side printing device has a terminal side and a back side. A reversing cylinder for reversing the printed sheet between the start end side of the printing device, and a sheet guide provided below the reversing cylinder for guiding the sheet conveyed along the peripheral surface of the reversing cylinder. In a sheet guide device of a double-sided printing machine, in the present invention, a plurality of sets of air pipes, which are arranged in parallel along the sheet traveling direction and have a plurality of air injection holes in the axial direction of the outer peripheral surface, and the air pipes are pipes. And a rotation mechanism configured to be rotatable about an axis.
It is good to

According to this invention, since the rotatable air pipes are independently arranged side by side along the sheet transport direction, the most suitable air pipe ejection holes are set at the most preferable positions for each sheet transport position. The direction of air jet from the hole, the flow rate and pressure of air jet, and the scattered density of nozzles and holes can be set for each pipe independently and independently of other pipes. Therefore, between the sheet guide surface and the reversing cylinder, a stable traveling posture control of the sheet can be performed over a wide area from thin paper having low rigidity to thick paper having high rigidity, and the manual work is reduced, and at the same time, the operation of the sheet 10 is reduced. Problems that cause stains and scratches on the printed surface are greatly reduced.
As a result, the posture of carrying the sheet into the impression cylinder of the next-color printing apparatus is improved, and the stable delivery of the sheet is possible in the downstream process, which enables high-quality printing and improves quality.

The present invention further comprises a plurality of sets of air chambers each having a plurality of air injection holes formed in a sheet guide surface formed in a substantially flat shape along the sheet guide direction. the along the sheet traveling direction of Ru is juxtaposed
Is good .

Also in this invention, since the independent air chambers are arranged along the sheet guide direction, the air ejection direction, the air ejection flow rate and the pressure from the nozzle hole most suitable for each sheet conveying position. Since the scattered density of the nozzles and holes can be set independently for each chamber and independently of other chambers, it has the same effect as in claim 1.

Further, according to the present invention, a plurality of sets of air chambers each having a plurality of air injection holes formed in a sheet guide surface formed in a substantially flat shape along the sheet guide direction, and a plurality of air chambers in the axial direction of the outer peripheral surface are provided. And a plurality of sets of air pipes having the air injection holes formed therein, and the air chambers and the air pipes are mixed in a substantially flat shape along the seat traveling direction.

In the present invention, a large wave is reduced by the air jet from the air pipe and the entire seat running posture is reduced by the air jet from the air chamber 5 against the corrugation of the sheet in the lower portion of the reversing cylinder. Since the sheet can be run without contact and the fluttering of the sheet can be smoothed, a particularly great effect can be obtained in a sheet-fed printing machine that prints on both sides.

Further, according to the present invention, there is provided a moving means for moving the sheet guide in a direction in which the sheet guide is moved toward and away from the sheet conveying surface of the reversing cylinder, and the sheet guide is divided into a plurality of intermediate heights.
To the height of the front and back of the upstream and downstream sides in the sheet transport direction.
It is characterized by being configured to be changeable .

According to the present invention, the sheet guide for guiding the sheet can be arbitrarily changed in the path in the sheet flow direction and the distance with respect to the axis of the reversing cylinder 1, so that sheets of various sizes and paper qualities can be easily accommodated. it can.

In particular, as shown in FIG. 8, the height of the plate-shaped guide 15 or the air pipe 3 or the air chamber 5 which constitutes the sheet guide can be divided into a plurality of steps, and each divided body is contacted and separated. By providing the moving means for moving in the direction, the function of adjusting the contact / separation distance of the reversing cylinder is significantly improved, and the traveling posture of the seat 10 can be controlled more ideally.

Still further, the present invention provides a driving source configured to drive the moving means, a moving position detecting means of a sheet guide moved by the driving source, and printing conditions including sheet size, paper quality, and mechanical speed. An input device for inputting, a storage device for storing data including the input printing conditions and processing means, a calculation device for calculating a set position of a sheet guide based on the data of the storage device, and calculation of the calculation device An output device that generates an output signal that conveys the result to an external device, and drive-controls and divides the drive source based on the signal from the output device.
And consists of a drive control device for controlling the position of the sheet guide, entering-force device via the Internet network or a public line or corporate LAN upstream system of the printing press, or are directly connected, the printing condition from the upstream system It is characterized in that the data is taken into the input device.

According to this invention, the height position of the plate-shaped guide, the air pipe, or the air chamber can be automatically set by inputting the printing condition data, thereby reducing the setting error and significantly increasing the setting error. In addition to saving labor, the printing management system (upstream system) of the factory automatically captures a part of the control signals sent during order changes, etc. The input operation of is unnecessary.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings. However, unless otherwise specified, the dimensions, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. The configuration of the sheet guide apparatus according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5. 1 and 2 are explanatory views of the basic configuration of a sheet guide device installed below a reversing cylinder in a sheet traveling path portion of a sheet-fed printing press according to an embodiment of the present invention.
Is a plan view and FIG. 2 is a side view. FIG. 3 is an explanatory view showing the structure of the main part of the sheet guide device of FIG. 1, and FIG. 4 is an applied structure example diagram of the sheet guide device according to the first embodiment of the present invention.

In the following embodiments, parts and portions common to the prior art shown in FIGS. 10 to 12 are given the same reference numerals. The sheet guide apparatus according to the present embodiment is a sheet guide apparatus that is disposed below a reversing cylinder 1 provided in the middle of a front surface printing apparatus and a back surface printing apparatus in a double-sided sheet-fed printing machine. As a basic structure, as shown in FIGS. 1 to 3, a plurality of air injection holes (nozzles) are formed on the outer peripheral surface.
2 has a cylindrical air pipe 3 and a nozzle 4 on the upper surface.
And the air chamber 5 in which the sheet is formed extend in the sheet width direction over the entire sheet width, and the extended ones are respectively formed into the sheet 1
A plurality of pairs of beam-shaped connecting fittings 6 which are arranged alternately along the transport direction of 0 and are located outside the width of the sheet 10 and extend in parallel along the sheet transport direction, for example.
After being installed between them, the air pipes 3 and the air chambers 5 are supported in parallel and alternately, and then the connecting metal fittings 6 are provided on the lower surfaces of the start end side (the upstream side in the sheet transport direction) and the end side (the downstream side in the sheet transport direction). The support column 7 is hung down to the device frame 9 and is fixedly mounted on the device frame 9 located below the connecting fixture 6 through the fixing fixture 8 and the like.

In this case, the beam-shaped connecting fitting 6 is not horizontal but is arranged so as to incline upward from the upstream side toward the downstream side in the sheet conveying direction, and the end side thereof is close to the bottom of the impression cylinder 16 in the next step. I am letting you. Further, air pipe attachment portions are provided on the lower surfaces of the air pipe 3 and the air chamber 5, which do not face the seat 10, respectively, and are connected to the air source 13 such as a blower or a compressor via the pipe 11 and the solenoid valve 12, respectively. It is connected.

The air pipe 3 is constructed so as to be rotatable in the circumferential direction about the axis, whereby the seat 10 is provided.
It is possible to arbitrarily change the air blowing angle with respect to. The configuration for arbitrarily changing the air blowing angle of the air pipe is shown in detail in FIG. That is, a plurality of air injection holes 2 of the air pipe 3 are bored along the pipe top in the axial direction of the pipe, and the hole shape is bored as a straight hole extending in the pipe radial direction. Further, the rotating mechanism of the air pipe 3 is provided with a rotary shaft 52 that seals both end surfaces of the pipe, and the rotary shaft 52 is rotatably inserted in the mounting hole of the beam-shaped coupling fitting 6, and a stopper 54 (screw) is provided. Is configured so that the pipe 3 can be fixed and rotated. As a result, the angle at which the air is blown to the sheet 10 can be changed, and the rotation position can be fixed by the stopper 54.

Next, the structure of the air chamber 5 will be described. In the air chamber 5, the inner space is formed into a square shape and the upper surface through which the sheet 10 is inserted has a flat rectangular shape.
As shown in detail in FIG.
Is formed to be slightly inclined from the upper surface so that air is ejected along the upper surface, and in particular, the point where the negative pressure is maximized with respect to the nozzles 4 adjacent to each other in the air ejection direction of the nozzles, or The blowing side of the nozzle 4 is set to face slightly forward.

For example, as shown in the upper part of the section (A), the nozzles 4 and 4 are arranged at the corners of the virtual square by 90 degrees each so that the nozzle jet flow is jetted to other adjacent nozzles. A large number of nozzle group groups each including four nozzle groups are arranged in a scattered manner. As a result, as shown in the lower part of part (A),
The negative pressure at the nozzle ejection position becomes large.

Regarding the number and arrangement of the air pipes 3 and the air chambers 5, various types other than those illustrated can be adopted. In addition, a regulator, a flow meter, etc. may be appropriately incorporated in the piping system so that the air ejection pressure and the flow rate can be adjusted. The air-type sheet guide device that is normally used is configured such that after air is supplied to the air pipe 3 and the air chamber 5, respectively, a plurality of air injection holes 2 are provided on the sheet guide surface of the upper surface of the air pipe 3 and the upper surface of the air chamber 5, respectively. This is a device that blows air from the nozzles 4 to stabilize the running posture, and there are various types of devices depending on the shape or the arrangement of the air injection holes 2 and the nozzles 4.
Example 1 of the present invention is the above-mentioned air type sheet guide,
That is, the air injection hole 2 of the air pipe 3 and the air chamber 5
The air is blown out from the nozzle 4 of the above to stably convey the sheet 10 to be conveyed along the guide surface with a predetermined gap, and the top surface of the air pipe 3 and the air chamber 5 arranged side by side. The line (surface) connecting the upper surfaces of the sheets may be linear, or may be an appropriate curved surface (for example, an arc surface) along the outer peripheral surface of the reversing cylinder 1 in order to correspond to the running posture of the seat 10. .

The air pipes 3 and the air chambers 5 may be alternately arranged as shown in FIG. 2, or the air chambers 5 may be arranged at the center side and the air pipes 3 may be arranged at both ends thereof. Is also good. The air pipe 3 is used in the first embodiment.
A plurality of only the air chambers 5 arranged in parallel are also included, and a plurality of only the air chambers 5 arranged separately in parallel are also included.
An example of its application is shown in FIG.

In FIG. 4A, a plurality of sets of air pipes 3 are provided.
Shows a structure in which the sheets are arranged in parallel along the sheet traveling direction. Further, (b) shows a structure in which a plurality of sets of air chambers 5 are juxtaposed along the seat advancing direction.

First, at the start of printing, that is, when the sheet 10 is conveyed, first, as an initial setting, an air source (blower)
13 is operated to increase the air pressure inside the air pipes 3 and the air chambers 5, and the pressurized air that has been raised to the predetermined pressure is formed on the upper surfaces of the air pipes 3 and the air chambers 5. Blow out from 4.

Subsequently, the printing apparatus is operated to start printing, and while the sheet 10 is being inverted, the sheet 10 is run on the sheet guide along the circumferential surface of the inverted cylinder. As a result, the sheet 10 is transported while being supported by the air flow.
The present device is operated by the flow velocity of air, that is, the static pressure on the guide surface is reduced by the high-speed air flow generated on the lower surface of the sheet 10 to be conveyed, and the suction force that causes the sheet 10 to follow the guide surface is generated. Sheet 1
Although it is similar to the prior art shown in FIG. 13 in that it stops at a position where the force of 0 and the force of the blown air are balanced and the sheet 10 can be conveyed without contacting the guide surface, In this embodiment, the air pipe 3 and the air chamber 5 are independently configured, and in particular, the air pipe 3
Since the air chamber 5 and the air chamber 5 are mixed, a large wave is reduced by the air jet from the air pipe 3 and the entire seat running posture is reduced by the air jet from the air chamber 5 against the corrugation of the seat 10 below the reversing cylinder 1. By doing so, the sheet 10 can be run in a non-contact manner, and by doing so, the fluttering of the sheet 10 can be smoothed, and a particularly great effect can be obtained in a sheet-fed printing machine that prints on both sides. You can

Therefore, in the first embodiment, the seat 10 is supported by the air flow blown from the surfaces of the air pipe 3 and the air chamber 5, so that the attitude control of the seat 10 which cannot be realized only by the plate-shaped sheet guide 15 is provided. The point that it can be dealt with is similar to the above-mentioned conventional technique, but in particular, unlike the conventional technique, the air pipe 3 or the air chamber 5 having the air ejection holes or nozzles formed on the upper surface without integrally forming the air box. A plurality of sets (hereinafter, referred to as air blocks when both are included) are provided, and the plurality of sets of air blocks are connected and arranged in a daisy chain shape along the sheet conveying direction. As a result, the air ejection direction from the nozzles or holes, the air ejection flow rate and pressure, and the scattering density of the nozzles or holes to the positions where the independent air pipes 3 and air chambers 5 are most independent are independent for each air pipe 3 and air chamber 5. And can be set independently of the other air pipes 3 and air chambers 5.

Therefore, between the sheet guide surface and the reversing cylinder 1, it is possible to stably control the traveling posture of the sheet 10 over a wide area from thin paper having low rigidity to thick paper having high rigidity, which allows manual work. Less and
The problem of causing stains and scratches on the printing surface of the sheet 10 is significantly reduced, and the posture of carrying the sheet to the impression cylinder 16 of the next color printing device is improved, so that the sheet 10 can be stably delivered in the downstream process. Therefore, high quality printing is possible and the quality is improved. It became possible to obtain various effects.

(Embodiment 2) FIGS. 5 to 8 show another embodiment of the present invention in which the distance between the sheet guide surface and the reversing barrel surface is variable, and FIGS. 5 and 6 show such a sheet guide apparatus. 5 is a plan view and FIG. 6 is a side view. FIG. 7 is an explanatory view of a main structure of the sheet guide device, and FIG. 8 is an explanatory view of an applied structure example of the sheet guide device according to the second embodiment.

The structure of the second embodiment of the sheet guide device will be described with reference to FIGS. In the second embodiment,
The sheet guide device installed below the reversing cylinder 1 is the same as that described in the first embodiment, and the sheet guide may be composed of the air pipe 3 and the air chamber 5, or the air pipe 3 or the air chamber 5 may be connected in series. It may be configured into a shape. Further, in the present embodiment, since the main point is to make the distance between the sheet guide surface and the one circumferential surface of the reversing cylinder variable, the flat sheet guide surface shown in the prior art may be used. Further, in the first embodiment, the air pipe 3 and the air chamber 5 are supported in parallel with each other by being installed between the pair of beam-like connecting fittings 6, but only the pair of beam-like connecting fittings 6 are shown in the present embodiment. , Air pipe 3 and air chamber 5
Are not shown.

In the present embodiment, the movable fitting-shaped rack 18 is hung on the lower surfaces of the connecting metal fitting 6 at the start end side (upstream side in the sheet conveying direction) and the end side (downstream side in the sheet conveying direction), and the rack 18 is provided. It is fixed to the cross rail 9a of the device frame 9 located below the connecting fitting 6 via the guides 17 and the like.

In this apparatus, as shown in FIGS. 5 to 7, the seat guide formed of a plate-like member or the connecting fitting 6 for supporting the air pipe 3 and the air chamber 5 of the first embodiment is provided in front and rear of the seat running direction. Each of them is supported by a pair of racks 18 which are vertically supported by a guide 17 fixed to the frame horizontal rail 9a, and a pinion 19 is meshed with the racks 18. A bracket 20 is fixed to the plate-shaped sheet guide 15 or the connecting fitting 6 at a position corresponding to the mounting portion of the rack 18, and the upper end of the rack 18 is rotatably connected via a pin 21.

Further, the plate-like sheet guide 15 or the connecting fitting 6 is constructed so that it can be freely tilted when the rack 18 is vertically moved up and down, and the mounting angle thereof can be arbitrarily changed to some extent. Further, the pinion 1 that meshes with the racks 18, 18 that support the front side or the rear side of the sheet conveying direction.
9 and 19 are a pair of pinion 1 corresponding in the seat width direction.
9a and 19b are integrally connected via a drive shaft 22 that extends in the seat width direction, and rotate in synchronization. Also, one end of each of the drive shafts 22, 22 is extended to the outside of the frame 9, and a joint 90 is attached to the extended end.
The motors 23, 23 are connected via. The motors 23, 23 are configured so that they can be driven independently.

As the lifting mechanism for the plate-shaped sheet guide 15 or the connecting fitting 6 for supporting the air pipe 3 and the air chamber 5, various types such as using an air cylinder can be adopted other than the illustrated example. Further, the motor 23 exemplified as the elevating and lowering drive means may be an electric, hydraulic, pneumatic, or the like, or a linear electric, hydraulic, or pneumatic motor that is directly moved. There is also a method in which the drive source is omitted, a handle is provided at the shaft end of the shaft 22, and the shaft 22 is manually moved up and down to be fixed at an arbitrary position.

On the other hand, the sheet guide device illustrated in FIG.
In the application example of the second embodiment, the plate-shaped sheet guide 15 or the connecting fitting 6 for supporting the air pipe 3 and the air chamber 5 is divided in the front-rear direction intermediate direction of the sheet conveying direction, and adjacent plate end portions 15a, 15b or connecting portions. The metal fitting ends 6a and 6b are supported by pins on the rack 18, and the pinion 19 and the shaft 22 are connected by a shaft 22 as in the example of FIG.
It is configured so that it can be moved up and down via a motor 23 connected to the. The plate-shaped sheet guides 15a and 15b or the connecting fittings 6a and 6b may be divided into a plurality of sets such as three and four sets other than the illustrated two sets.

Therefore, according to the sheet guide apparatus of the second embodiment, when the plate-shaped sheet guide 15 or the connecting fitting 6 is formed by one as shown in FIGS. 5 to 7, the plate-shaped sheet guide 15 or the connecting member 6 is connected. The height of the metal fitting 6 (distance in the direction of contact with and separation from the reversing cylinder 1) and the angle in the front-rear direction with respect to the horizontal can be arbitrarily changed and set. Further, as shown in FIG. 8, when the plate-shaped sheet guide 15 or the connecting fitting 6 is divided into a plurality of sets, the same setting as in FIGS. 5 to 7 can be performed, and the height of the intermediate rack 18 is set to the sheet conveying direction. Upstream and downstream,
By changing the height of the front and rear racks 18, it is possible to fold the guide surface into a flat V shape at an intermediate position by the plate-shaped sheet guide 15 or the connecting metal fitting 6 and set it as a concave type (or a convex type).

Next, the function and effect of the second embodiment will be described with reference to FIGS. When the sheet 10 is conveyed, the following operation is performed. First, as an initial setting, the height and angle of the sheet guide 15 or the air pipe 3 or the air chamber 5 are set to appropriate positions according to the printing conditions (specification of sheet size, rigidity, machine speed, etc.). continue,
The following effects can be obtained by operating the printing machine (apparatus) and running the sheet 10 as in the above example. That is, according to the present embodiment, the sheet guide that guides the sheet 10 can be arbitrarily changed in the sheet flow direction path and the distance with respect to the axis of the reversing cylinder 1. Therefore, various sizes and sheets of paper 10 can be easily handled. I can do things.

Particularly according to the format of FIG. 8, the sheet guide 1
5 or the height of the air pipe 3 or the air chamber 5 can be divided into a plurality of steps, the function of adjusting the contact / separation distance of the reversing cylinder is significantly improved, and the traveling posture of the seat 10 can be controlled more ideally. It will be possible.

FIG. 9 is an explanatory view of a configuration example of the sheet guide apparatus according to the third embodiment and is a plan view corresponding to FIG. The configuration of the third embodiment will be described based on FIG. Example 3
In addition to the configuration of the second embodiment, is a position detecting means 29 of the plate-shaped sheet guide 15 or the moving means 24 of the connecting fitting 6, a data input device 25 for inputting printing conditions, and the input data and data processing procedure. The storage device 26 stores an operation device 27 which performs an operation based on an instruction of the storage device 26 and the control device 47 according to the input data and the processing procedure stored in the storage device 26. It is adapted to communicate with an output device 46 for transmitting a signal to a device. The height position signal of the output signal is transmitted to the drive control unit 28, the drive control unit 28 drives the motor 23, and the signal from the height position detecting means 26 is at a position where the signal from the output unit 46 matches. It is supposed to stop. The moving means 24 for the plate-shaped sheet guide 15 or the connecting fitting 6 is the same as that in the second embodiment. It can also be moved directly from the input device 25 for manual input.

Further, if necessary, the manual data input device 25 may be connected to a production management system (upstream system) 31 of a factory so that necessary data can be input from the system 31. The production management system 31 has a variety of management functions such as a quality management function, a printing machine operation status management function, a print preparation function, and other various management functions. Almost all operations such as print quality management and machine management are performed. The printing conditions, which are a part of the functions of the system 31, can be transmitted to the input device 25.

The third embodiment can be applied to the seat guide apparatus shown in the first and second embodiments, for raising and lowering the seat guide, controlling the rotational phase position of the air pipe 3 in the first embodiment, and the like. It goes without saying that you can do it.

Next, the function and effect of the third embodiment will be described. When the sheet (printing paper) 10 is conveyed, the following operation is performed. First, as an initial setting, printing conditions (sheet size, paper quality, machine speed, etc.) are input to the data input device 25, stored in the storage device 26, and input data and processing procedures stored in the storage device 26 are stored. Based on the arithmetic unit 27
Calculate the movement amount with. Next, based on the signal from the arithmetic unit 27, the drive control unit 2 via the output unit 46.
Moving means 24 from 8 to the sheet guide 15 or the connecting fitting 6
To drive. That is, the motor 23, which is a moving means, is operated, and the rack 22 supporting the plate-shaped sheet guide 15 or the connecting fitting 6 is moved up and down by the shaft 22 and the pinion 19 connected to the motor 23.

The amount of movement of the rack 18, that is, the height position of the plate-shaped sheet guide 15 or the connecting fitting 6 is read by the position detecting means 29 provided at the rear end of the motor 23 and fed back to the drive control device 28 for control. Will be done.
By the above operation, the plate-shaped sheet guide 15 or the connecting fitting 6 can be moved and fixed according to the printing conditions.
Next, as in the first and second embodiments, the printing machine (apparatus) is operated and the sheet 10 is run.

According to the third embodiment, in addition to the effect of the second embodiment, the height position of the plate-shaped sheet guide 15 or the connecting fitting 6 can be automatically set by inputting the printing condition data. As a result, setting mistakes can be reduced and significant labor can be saved. The manual data input device 2
The function and effect of the sheet guide device when the production management system (upstream system) 31 of the factory is connected to the unit 5 will be described. When the sheet (printing paper) 10 is conveyed, the following operation is performed. First, as an initial setting, a part of a control signal sent in an order change or the like and a data signal of a printing condition are automatically taken in by a production management system (upstream system) 31 of a factory, so that a manual printing condition can be set. No input operation is required. Therefore, in the initial setting, erroneous operations associated with data input are eliminated, manual correction work is not required, setting change time can be shortened, and great labor saving can be achieved.

[0054]

As described above, according to the inventions of claims 1 to 3, the sheet 10 is spread over a wide area between the sheet guide surface and the reversing cylinder, from thin paper with low rigidity to thick paper with high rigidity. Stable running posture control can be performed, the amount of manual work is reduced, and the trouble of causing stains and scratches on the printing surface of the sheet 10 is significantly reduced, and the posture of carrying the sheet into the impression cylinder 16 of the next-color printing apparatus is reduced. Since the quality of the sheet 10 is improved and the sheet 10 can be delivered in a stable manner in the downstream process, high quality printing is possible and the quality is improved.

According to the invention described in claims 4 to 5, since the path of the sheet guide in the sheet flow direction and the distance with respect to the axis of the reversing cylinder 1 can be arbitrarily changed, it is possible to easily cope with sheets of various sizes and paper qualities. In addition, the height of the plate guide, air pipe, and air chamber that make up the seat guide can be divided into multiple levels, which greatly improves the function of adjusting the contact / separation distance of the reversing cylinder. It becomes possible to control the running posture of the seat more ideally.

According to the sixth and seventh aspects of the present invention, it is possible to automatically set the height position of the plate guide, the air pipe, or the air chamber by inputting the printing condition data. It is possible to reduce the number and to save a lot of labor, and to configure a factory production management system (upstream system) to automatically capture some of the control signals sent during order changes and other data signals for printing conditions. This eliminates the need to manually input the printing conditions. Various effects can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view illustrating a configuration example of a sheet guide apparatus according to a first exemplary embodiment of the present invention installed below a sheet traveling path portion and a reversing cylinder of a sheet-fed printing press.

FIG. 2 is a side view of FIG.

FIG. 3 is a structural explanatory view of a main part of the sheet guide device.

FIG. 4 is an explanatory diagram of an applied structure example of the sheet guide apparatus according to the first embodiment of the present invention.

FIG. 5 is a plan view illustrating an example of constituent elements of such a sheet guide device in another embodiment of the present invention in which the distance between the sheet guide surface and the inversion barrel surface is variably configured.

FIG. 6 is a side view of FIG.

FIG. 7 is an explanatory view of a main part structure in the sheet guide device, which is a detailed view of part (B) of FIG. 6;

FIG. 8 is an explanatory diagram of an applied structure example of the sheet guide apparatus according to the second embodiment.

9 is an explanatory diagram of a configuration example of a sheet guide device according to a third embodiment of the invention, and is a plan view corresponding to FIG. 5. FIG.

FIG. 10 is an explanatory diagram illustrating a configuration example of a conventional sheet guide device disposed below a reversing cylinder, which is interposed between a front-side printing device and a back-side printing device that are arranged side by side in a tandem manner in a double-sided sheet-fed printing machine. Is.

FIG. 11 is an explanatory diagram of a configuration example of a reversing body portion provided in a double-sided sheet-fed printing machine.

FIG. 12 is an overall schematic configuration explanatory view of a general sheet-fed printing press showing the configuration specifically.

FIG. 13 is a conventional explanatory view in which a sheet guide device is configured by one air block similar to the present invention.

[Explanation of symbols]

1 Inversion body 2 Air injection holes 3 air pipes 4 nozzles 5 Air chamber 6 connection metal fittings 7 props 10 sheets 13 Blower (air source) 14 Printing device 15 Plate sheet guide 16 impression cylinder 17 Sheet guide 18 racks 19 Pinion 23 motor 24 means of transportation 25 Input device 26 storage devices 27 arithmetic unit 28 Drive control device 29 Position detection means 31 Production management system

Continuation of the front page (56) Reference JP-A-9-100054 (JP, A) JP-A-11-99625 (JP, A) JP-A-11-99624 (JP, A) JP-A-11-334035 (JP , A) JP 2001-96724 (JP, A) Jitsukai Sho 58-180835 (JP, U) Utility model registration 3023461 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65H 5/38

Claims (4)

(57) [Claims] 1. A plurality of printing devices are arranged in tandem along the sheet conveying direction, and the print sheet is turned upside down between the end side of the sheet front side printing device and the start side of the back side printing device. In a sheet guide device of a sheet-fed double-sided printing machine, in which a cylinder is interposed and a sheet guide is provided below the reversing cylinder to guide a sheet conveyed along the peripheral surface of the reversing cylinder, in a sheet guide direction. A plurality of sets of air chambers each having a plurality of air injection holes formed in the sheet guide surface formed into a substantially flat shape, and a plurality of sets of air pipes having a plurality of air injection holes formed in the axial direction of the outer peripheral surface. The air chamber and the air pipe are mixed in a substantially flat shape along the seat traveling direction.
A sheet guide device for a sheet-fed double-sided printing machine, which is characterized by being placed side by side. 2. A configured to divide the height of the Rue Apaipu and air chamber make up the sheet guide in a plurality of stages form, each respective divided body, that is provided moving means for moving the contact and separation direction A sheet guide device for a sheet-fed double-sided printing machine according to claim 1 . To 3. A sheet conveying surface of the convertible cylinder shea Togaido, Rutoto provided moving means for moving toward or away from
In addition, the sheet guide is divided into multiple parts and the intermediate height is
It is possible to change the front and rear heights on the upstream and downstream sides in the feeding direction.
The sheet guide device for a sheet-fed double-sided printing machine according to claim 1, which is configured . 4. A drive source configured to be able to drive the moving means, a moving position detecting means of a sheet guide moved by the drive source, and an input device for inputting printing conditions including sheet size, paper quality, and machine speed. A storage device that stores data including the input printing conditions and processing means; a calculation device that calculates a sheet guide setting position based on the data of the storage device; and a calculation result of the calculation device as an external device. an output device for generating an output signal to tell, the drive source and drive control based on a signal from the output device consists of a drive control device for controlling the position of the divided sheet guides, the input instrumentation
Is an upstream network of the printing machine
Or via an in-house LAN or directly connected
The printing condition data from the flow system to the input device.
The sheet guide device for a sheet-fed double-sided printing machine according to claim 2 , wherein the sheet guide device is configured to be inserted .