JPH0885198A - Guide roller device for printer - Google Patents

Abstract

PURPOSE: To embody the miniaturization and standardization by accomodating the driving unit of rotation of a guide roller in a bearing unit. CONSTITUTION: A guide roller 10 is formed so as to have a hollow cylindrical shape while a bearing shaft 12, inserted into the end faces of the guide roller 10 to receive the roller through bearings 16, is attached to a frame 14. An air cylinder mechanism 22, having a piston sleeve 20 slidable along the shaft around the outer peripheral part of the bearing shaft 12, is provided. A ring gear 36, rotatable through the bearing 16, is provided in the piston sleeve 20 at the end face of th guide roller 10 so as to be drivable by contact and separation. Clutch teeth 40, 42 are formed on the end face of the ring gear 36 and the guide roller 10 to form an engaging clutch mechanism 38. A driving gear 50, driven by a driving means, is engaged with the ring gear 36 through a driving means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide roller device for a printing machine, and more particularly to a guide roller device equipped with a rotation driving means for cleaning the guide roller.

[0002]

2. Description of the Related Art The printing unit of a rotary printing press for newspaper printing is
Offset printing is performed by transferring a pattern from the plate cylinder to the blanket cylinder and printing on the printing paper through the blanket cylinder. Such an offset rotary press usually has several printing units installed side by side, and the running paper from each printing unit is guided to a slitter or turn bar by a large number of guide rollers and then to a folding machine via these. ing.

By the way, in the case of newspaper printing, etc., 4 to 5
A printing unit of about a stand is provided, and the printed surface of the printing unit is folded and guided to a folding machine. When this printing paper surface is conveyed to the folding machine, the distance may be long, and about 150 to 250 guide rollers are used to smoothly feed the paper without breaking it. When passing through this guide roller, the surface of the ink that has not dried completely contacts the surface of the roller immediately after printing, so with time, stains mixed with ink and paper powder become the same as the case of the blanket cylinder. Adhere to. Since this dirt adheres unevenly to the surface of the guide roller, the cross section cannot maintain a perfect circular shape, and the parallelism on the left and right is slightly reduced. Therefore, the running paper may be wrinkled, partly soiled, and the vehicle may not travel straight, so daily cleaning is important. This one guide roller can be soiled in a short time, but since it reaches 150 to 250 as described above, it requires a lot of work time and many installation places are high places. It is dangerous work. For this reason, automatic cleaning work for the guide rollers is underway.

As a conventional method for cleaning the guide roller, a so-called wet cleaning method is widely adopted in which the guide roller is rotated by a cleaning liquid application device separately provided and is rotated relative to the running paper which has been previously moistened. There is. For example, Japanese Patent Application Laid-Open No. 2-202451 and Japanese Patent Publication No. 4-58791.
Japanese Patent Publication proposes a method in which a web is wiped to clean the surface of the guide roller by providing a speed difference between the traveling speed of the web and the peripheral speed of the guide roller.
In order to give a speed difference, the guide roller is equipped with a rotation driving device, and a gear train rotated by a motor causes a speed difference between the guide roller and the traveling paper when cleaning the guide roller.
It is supposed to rotate by force. Then, when the cleaning is not performed, the gear train is cut off so that the rotation transmission is not performed. For example, a driven gear is attached to an end portion of a guide roller that is supported by a frame of a printing machine, and a motor having a drive gear that can mesh with the gear is attached to the machine frame. The drive gear is attached to the frame so that it can be moved up and down together with the drive motor, and when not cleaning, the gear mesh is disengaged by the lifting device.

[0005]

However, in the above-mentioned conventional guide roller apparatus, there are a plurality of shapes and structures of the bearing portion of the guide roller, and these are mixed and installed in the printing machine. It was difficult to equip the rotary drive device with the above. Further, individual processing for a narrow space around the guide roller bearing portion, for example, because the installation space of the drive means is different for each roller portion, an individual process such as which direction to set the ascending / descending direction for attaching / detaching the drive gear is performed. There was a problem that it took a lot of time to set the conditions.
Further, in order to install the conventional drive device, a space of about 270 mm from the surface of the guide roller is required as a space,
Even if the design is taken into consideration, there is a problem that about 20% of the guide rollers installed in the printing equipment cannot be installed. Further, since the gear on the guide roller side, which is provided for transmitting the rotation, is attached as a half structure, there is a problem in meshing accuracy. Furthermore, it was necessary to increase the strength of the brackets for attaching and detaching the gear. Further, there is a problem that a large number of models have to be prepared, and much time is required for installation and maintenance. Also,
The total cost including design, manufacturing, installation and maintenance was very high.

In view of the above-mentioned conventional problems, the present invention provides a guide roller device for a printing machine in which the rotary drive of the guide roller is built in the bearing portion so as to be downsized and standardized. With the goal.

[0007]

In order to achieve the above-mentioned object, a guide roller device of a printing machine according to the present invention is a printing machine in which a guide roller arranged on a web traveling line of the printing machine can be rotationally driven. A guide roller device, comprising: an air cylinder mechanism having a bearing shaft inserted and inserted into an end surface of the guide roller for bearing, and having a piston sleeve slidable along the shaft on an outer peripheral portion of the bearing shaft. By forming a ring gear that can be freely rotated on the piston sleeve, the ring gear can be driven toward and away from the end surface of the guide roller, and clutch teeth are formed on the ring gear and the end surface of the guide roller to form a meshing clutch mechanism. The ring gear has a structure in which a drive gear of the rotation drive means is meshed with the ring gear.

In this case, the bearing shaft has a spacer plate attachable to and detachable from the apparatus main body frame, and by varying the spacer plate thickness, it is possible to cope with different machine frame gaps for each type of rotary press or for the same rotary press depending on the location. The piston sleeve may have a variable length structure, and the piston sleeve may be pneumatically driven in the clutch connecting direction and biased by a spring in the clutch disengaging direction so that rotation transmission is interrupted at all times. Further, the guide roller side clutch teeth forming the clutch mechanism are formed on the end surface of the concentric cylinder body fixed to the guide roller, and can be removed from the guide roller.

[0009]

According to the above construction, the guide roller is normally rotatable about the bearing shaft inserted and inserted at both ends. At this time, since the rotating member is only the guide roller and has a light weight structure, it can follow the running paper well and can exhibit a good guide function. When trying to clean this guide roller, supply air to the air cylinder mounted on the outer circumference of the bearing shaft.
The piston sleeve advances toward the roller end surface, and the ring gear attached to the outer periphery joins the end surface of the guide roller. Since clutch teeth are formed on both of the parts to be joined, they mesh with each other to connect the rotation transmission path from the ring gear to the guide roller. Since the drive gear meshes with the ring gear, the drive force of the motor is transmitted from the gear train to the guide roller via the clutch mechanism,
The guide roller is forcibly rotated. When finishing the cleaning work and stopping the rotation of the guide roller,
When the supply of working air to the air cylinder is stopped and the atmosphere is released, the piston sleeve is driven backward by the spring, whereby the ring gear on the outer periphery is separated from the guide roller, and the dog clutch is disengaged. Therefore, the rotation transmission path connected to the guide roller is blocked from the ring gear rotated by the drive gear, and the separated guide roller can freely rotate, and can perform a normal traveling guide action.

In such a structure, only the clutch teeth are formed on the end surface of the guide roller, and there are very few factors that usually increase the weight of the freely rotatable body. As a result, the inertia of the guide roller itself becomes small, and the adjustment operation of the cut-off position becomes much faster, so that the time until the printing apparatus enters stable operation can be greatly shortened.
Further, since the piston sleeve of the air cylinder is attached to the bearing shaft and the sliding movement of the shaft is utilized, and the driving means is an air cylinder mechanism attached to the bearing shaft, the clutch operating means is the bearing member. Other than the above, it is not necessary to provide the guide roller outside the guide roller, so that the size of the drive system can be reduced, and the overall size can be reduced. In particular, since the clutch on / off operation is sliding of the piston sleeve by air drive, there is no fear of increasing the outer diameter of the bearing portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of a guide roller device for a printing machine according to the present invention will be described in detail below with reference to the drawings.

1 and 2 are sectional views showing a main part of a guide roller device of a printing machine according to an embodiment. FIG. 1 is a sectional view of the guide roller in a freely rotating state, and FIG. 2 is a rotation of the guide roller. It is sectional drawing of a drive state. FIG. 3 is an end view of the guide roller device. The guide roller 10, which is the main body of the web guide, has a hollow cylindrical structure, and in the embodiment is a lightweight metal pipe made of aluminum or an aluminum alloy material such as duralumin.
The guide roller 10 made of such a lightweight metal pipe is rotatably supported by bearings at both ends thereof. Both ends of the guide roller 10 are rotatably supported by bearing means for bearings, and this bearing means has a bearing shaft 12 inserted and inserted from an end face opening of the guide roller 10, and the end face of the guide roller 10 is a bearing shaft. The tip of 12 is opened so that it can be inserted and inserted.

The bearing shaft 12 is a device frame 14
The guide roller 10 is installed horizontally with the guide roller 10 as a mounting base, has a length that overlaps with the guide roller 10 that is disposed at a regular mounting position and that projects toward the end surface of the guide roller 10. It is inserted from inside. The outer peripheral surface of the insertion end of the bearing shaft 12 and the bearing 16 on the inner peripheral surface of the guide roll main body 10 are arranged to allow the guide roller 10 to freely rotate. In addition, in the inner peripheral portion of the end face opening of the guide roller 10,
An inner sleeve 18 for directly holding the outer race of the bearing 16 is attached, and the inner sleeve 18 increases the end wall thickness of the guide roller 10 to increase the bearing strength.

Further, an air cylinder mechanism 22 having a piston sleeve 20 slidable along the shaft 12 is provided on the outer peripheral portion of the bearing shaft 12. That is, the bearing shaft 12 is formed such that the diameter gradually decreases from the shaft base portion having the largest diameter on the frame 14 side to the tip end shaft portion 12B having the smallest diameter which is the insertion portion into the guide roller 10. An intermediate shaft portion 12 having a different diameter between the base portion 12A and the tip shaft portion 12B.
C and 12D are formed. A cylinder block 24 is fixed to the intermediate shaft portion 12C having a relatively large diameter at a predetermined distance from the end surface of the guide roller 10 and extends to the outer peripheral side of the small diameter intermediate shaft portion 12D. . The cylinder block 24 is the large diameter intermediate shaft 1
Due to the extension from 2C, the small diameter side intermediate shaft portion 12D
The cylinder chamber 26 is formed between and. The piston sleeve 20 is attached to the outer peripheral portion of the small diameter side intermediate shaft portion 12D so as to be slidable in the axial direction, the cylinder chamber 26 is hermetically sealed at the rear portion of the piston sleeve 20, and the piston is supplied by air to the cylinder chamber 26. The sleeve 20 can be pushed out and slidably moved toward the end surface of the guide roller 10. A spring 28 is wound around the outer peripheral portion of the small-diameter side intermediate shaft portion 12D on the distal end side, and the spring 28 is provided at the boundary between the small-diameter side intermediate shaft portion 12D and the distal end shaft portion 12B. The piston sleeve 20 is returned and biased. Therefore, the piston sleeve 20 is always biased by the spring in a direction away from the guide roller 10, and when air is supplied to the cylinder chamber 26, the piston sleeve 20 is moved forward against the spring force.
An inlet 32 communicating with the cylinder chamber 26 is formed in the cylinder block 24 for supplying air, and air from an air supply source (not shown) can be introduced into the cylinder chamber 26.

The air cylinder mechanism 22 allows the piston sleeve 20 to reciprocate along the bearing shaft 12, but even if the piston sleeve 20 is in the maximum retracted state, half of the piston sleeve 20 protrudes from the cylinder chamber 26. It is set. This protrusion is the cylinder block 2
4 corresponds to the facing space position of the guide roller 10,
A rotation transmission mechanism that also serves as a clutch mechanism is provided here. That is, the ring gear 36 having external teeth as a driven gear is attached to the outer periphery of the front half of the piston sleeve 20 via the bearing 34. The ring gear 36 is fixed to the outer race of the bearing 34 so as to be freely rotatable, and is movable together with the piston sleeve 20 in the axial direction of the bearing shaft 12. Then, the ring gear 3
A meshing clutch mechanism 38 is formed between the end face portion 6 and the end face portion of the guide roller 10 facing the end face portion 6. This is composed of clutch teeth 40 formed on the end surface of the ring gear 36 and clutch teeth 42 formed on the end surface of the guide roller 10. In particular, the guide roller 1
For the clutch teeth 42 formed on the end surface of 0, the clutch plate 44 is attached to the end surface of the insertion sleeve 18 described above.
It is formed on the end surface of the clutch plate 44.
As a result, the forward movement of the piston sleeve 20 meshes the clutch teeth 40 and 42 with each other to enable rotation transmission, and the backward movement blocks the transmission path.

A driving air motor 46 is attached to the outer peripheral portion of the cylinder block 24 in order to apply a rotational driving force to the ring gear 36. This air motor 4
6 is installed so as to be parallel to the bearing shaft 12 and the guide roller 10, and therefore the cylinder block 2
A mounting bracket 48 for fixing the motor is formed on the front edge portion of the outer peripheral portion of 4, and the motor flange is fastened to this by a bolt. A drive gear 50 is attached to the motor shaft and meshes with the ring gear 36 described above. In this embodiment, the air motor 46 is attached to the bracket 48 so as to be directed to the guide roller 10 side so that the bearing mechanism cannot be attached due to the gap between the end surface of the guide roller 10 and the device frame 14.

In the above structure, the bearing shaft 1
2 is attached to the frame 14, but different frame intervals may coexist in one printing facility.
In this case, from the end surface of the guide roller 10 to the frame 1
4 is different, it is disadvantageous in maintenance to change the length of the bearing shaft 12 in the embodiment. Therefore, in the embodiment, the bearing shaft 1 is adjusted according to the frame width of the minimum width.
A length of 2 is set in advance, and a spacer plate 58 capable of selecting various thicknesses is interposed between the frame 14 and the frame 14 for wide frame intervals. With this, the bearing shaft 12 is standardized, and the spacer plate 58 that is different for each model is used.
I am preparing and responding. The operation of the guide roller device of the printing press thus configured is as follows. The running paper printed and discharged from the printing unit is guided to the slitter and the turn bar by the large number of guide rollers having the above-described configuration, and further guided to the folding machine via these. At this time, in the guide roller device, as shown in FIG. 1, the clutch mechanism 38 is disengaged, and the guide roller 10 in contact with the printing paper is allowed to freely rotate with respect to the bearing shaft 12. The guide roller 10 rotates at a speed that matches the traveling speed of the printing paper.

As the printing operation progresses, immediately after printing, the surface of the paper on which ink has not dried contacts the surface of the roller, and with the passage of time, stains containing ink and paper powder adhere to the surface of the guide roller. In order to remove this stain, the printing operation is stopped, the unprinted paper is run, and the guide roller 10 is rotated at a speed different from the paper running speed. Therefore, first, when the air motor 46 of the guide roller device is rotationally driven, the rotation of the drive gear 50 is transmitted to the ring gear 36. The ring gear 36 is connected to the piston sleeve 2 via the bearing 34.
Since it is attached to 0, the piston sleeve 20 itself does not rotate. Then, thereafter, operating air is supplied from the air inlet 32, and the piston sleeve 20 is driven to move forward, whereby the ring gear 36 moves forward in synchronization, and the clutch teeth 40 formed on the end surface are moved as shown in FIG. It meshes with the teeth 42 on the clutch plate 44 of the guide roller 10. As a result, the rotation of the drive motor 46 is transmitted to the guide roller 10 via the drive gear 50, the ring gear 36, and the clutch mechanism 38, and the guide roller 10 can be forcedly rotated.

According to this embodiment, the guide roller 10 can be freely rotated or forcedly rotated by moving the piston sleeve 20 constituting the air cylinder mechanism back and forth along the bearing shaft 12 and further. Since this switching operation is configured to be performed on the bearing shaft 12 side, it does not affect the normal operation of the guide roller 10, that is, the free rotation for guiding the running of the printing paper. Particularly in the embodiment configuration, the guide roller 1
Only the clutch teeth 42 are formed on the end face of 0, and there are very few factors that usually increase the weight of the freely rotatable body. As a result, the inertia of the guide roller 10 itself becomes small, and the time until the printing apparatus enters stable operation can be greatly shortened. Also, since the piston sleeve 20 of the air cylinder mechanism is mounted on the bearing shaft 12 and the sliding movement of the shaft 12 is utilized, the driving means thereof is the air cylinder mechanism 22 attached to the bearing shaft 12. It is not necessary to provide the operating means outside the guide roller other than the bearing member, so that the size of the drive system can be reduced, and thus the overall size can be reduced. Particularly, since the clutch on / off operation is sliding of the piston sleeve 20 by air drive, there is no fear of increasing the outer diameter of the bearing portion.

In addition, the bearing shaft 12 is standardized, and even if the printing equipment is equipped with a plurality of types of guide rollers, it can be easily dealt with by arbitrarily selecting the spacer plate 58. There is.

The cylinder block 24 is attached to the bearing shaft 12 by tightening a set screw 62 screwed to the cylinder block 24 into an annular groove 60 formed on the outer circumference of the cylinder block 24.
As a result, the motor 46 can be arranged at an appropriate position around the bearing shaft 12 so as to avoid a position where the air motor 46 interferes with other guide roller devices.

[0022]

As described above, the guide roller device of the printing press according to the present invention has the bearing shaft which is inserted into the end surface of the guide roller and receives the bearing, and the outer peripheral portion of the bearing shaft extends along the shaft. Forming an air cylinder mechanism having a slidable piston sleeve, and by attaching a freely rotatable ring gear to the piston sleeve, the ring gear can be driven toward and away from the end surface of the guide roller main body. Clutch teeth are formed on the end face of the guide roller to form a meshing clutch mechanism, and the ring gear is configured to mesh with the drive gear of the rotary drive means. And reliable rotation transmission can be easily switched. Particularly, since the same bearing shaft can be used for different frame intervals by attaching and detaching the spacer plate, standardization of equipment can be promoted. Further, since it is sufficient to attach a clutch plate to the guide roller 10 which is normally freely rotated, the equipment for rotating the drive and connecting / disconnecting the transmission path thereof hardly rotates, and is lightweight and excellent in responsiveness. Can be a guide roller device.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of essential parts showing a guide roller free rotation state of a guide roller device of a printing machine according to an embodiment.

FIG. 2 is a cross-sectional configuration diagram of main parts showing a guide roller rotation driving state of the apparatus.

FIG. 3 is a vertical sectional view of the device.

[Explanation of symbols]

 10 Guide Roller 12 Bearing Shaft 14 Device Frame 16 Bearing 18 Internal Insertion Sleeve 20 Piston Sleeve 22 Air Cylinder Mechanism 24 Cylinder Block 26 Cylinder Chamber 28 Spring 30 Spring Seat 32 Air Inlet 34 Bearing 36 Ring Gear 38 Clutch Mechanism 40 Clutch Teeth (Ring Gear Side) 42 clutch teeth (guide roller side) 44 clutch plate 46 air motor 48 bracket 50 drive gear 58 spacer plate 60 annular groove 62 set screw

Claims (4)

[Claims] 1. A guide roller device of a printing machine, wherein a guide roller arranged on a web running line of the printing machine is rotationally drivable, and has a bearing shaft inserted and inserted into an end surface of the guide roller. Forming an air cylinder mechanism having a piston sleeve slidable along the shaft on the outer peripheral portion of the bearing shaft, and attaching a freely rotatable ring gear to the piston sleeve to attach the ring gear to the guide roller end surface. A ring gear and a guide roller end surface are formed with clutch teeth to form a meshing clutch mechanism, and the ring gear meshes with a drive gear of a rotation driving means. Guide roller device. 2. The bearing shaft according to claim 1, wherein a spacer plate is attachable to and detachable from the apparatus main body frame, and the spacer plate thickness is exchanged so as to have a variable length structure corresponding to a guide roller type. Guide roller device for printing machines. 3. The guide roller device for a printing press according to claim 1, wherein the piston sleeve is air-driven in a clutch connecting direction and is biased by a spring in a clutch disengaging direction so that rotation transmission is interrupted at all times. . 4. The guide roller side clutch teeth forming the clutch mechanism are formed on an end surface of a concentric cylinder fixed to the guide roller and are removable from the guide roller. Guide roller device of the printing machine described in 1.