JPH06106702A - Guide roller - Google Patents

Abstract

PURPOSE:To provide a guide roller rotated by the frictional force developing between the roller and matter to be printed by a method wherein terminal members are mounted to the inner surfaces at both ends of a fiber reinforced plastic cylinder, the outer peripheral surface of the roller is covered with a metal cylinder having the outer peripheral surface with mixed larger and smaller diameter peripheral surfaces thereon under the condition that the resultant surfaces are covered with hard chromium plating. CONSTITUTION:To the inner surfaces at both the ends of a fiber reinforced plastic cylinder 5, a terminal member 8a having the bearing housing 7 of a bearing BR, which bears a fixed shaft 6, and a terminal member 8b having a shaft 9 are mounted. A metal cylinder 10 integrally covers the outer peripheral surface of the fiber reinforced plastic cylinder 5 so as to provide mixed larger and smaller diameter peripheral surfaces on the outer peripheral surface of the metal cylinder 10, which is further covered with hard chromium plating 11 so as to form the outer peripheral surface 2, in which the larger and smaller diameter peripheral surfaces are mixingly provided. A guide roller 1 is rotated together with the running of matter to be printed by the frictional force developing between the outer peripheral surface 2 and the matter to be printed, which comes into contact with the outer peripheral surface 2. At the same time, since the guide roller is surely rubbed by the matter to be printed, no foreign matter such as ink or the like adheres to the guide roller and the guide roller is automatically wiped and cleaned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for running and handling printed matter, for example, a rotary press.
The present invention relates to a guide roller that supports and guides an object to be printed.

[0002]

2. Description of the Related Art For example, a guide roller in a rotary printing press is appropriately arranged so as to support an object to be printed, which runs from a paper feeding section through a printing section toward a folding section, and can be guided in a desired direction. ing. In a large-scale rotary press such as a newspaper rotary press, the traveling path of the printed material from the paper feed unit to the folding unit is extremely long, and a large number of guide rollers are provided between them, and the moment of inertia of the roller is increased. When accumulated and accumulated, when the printed material runs or stops, it acts as a great force on the printed material, causing various problems.

Therefore, for example, Japanese Examined Patent Publication No. 3-12541
Japanese Patent Publication No. 3-6612, Japanese Patent Laid-Open No. 63-92.
As disclosed in Japanese Patent Laid-Open No. 564/1994 and Japanese Patent Laid-Open No. 3-286847, a fiber-reinforced plastic cylinder is used as a main material,
Using a metal cylinder, metal plating, or both,
A so-called lightweight roller having a small moment of inertia has been proposed which covers the outer peripheral surface of a fiber reinforced plastic cylinder.

On the other hand, the guide roller rotates at a peripheral speed substantially the same as the traveling speed of the printed material due to the frictional force with the printed material. Therefore, foreign matter such as ink adheres from the contacting printed material to the outer peripheral surface of the guide roller, which contacts the printed material after being printed in the printing unit, and stains the subsequent printed material to deteriorate the print quality. . In addition, it has been necessary to remove foreign matter such as adhered ink manually or by a dedicated device after printing is stopped or after printing is completed.

In order to solve such inconvenience, the applicant of the present application has proposed the device disclosed in Japanese Patent Laid-Open No. 1-209139. In this device, two or more guide rollers are provided in association with each other by a transmission mechanism device so as to be different from the rotational peripheral speed of at least one of the guide rollers, and the outer peripheral surfaces of all the linked guide rollers are All the linked guide rollers are made to rotate in a state where the rotational torque due to each frictional force acting between the printed matter and the printed matter is balanced, and a slight difference occurs between the rotational peripheral speed and the traveling speed of the printed matter. With this, it is possible to prevent foreign matter such as ink from adhering by rubbing the printed material traveling on the outer peripheral surface of the guide roller, and to automatically wipe and clean.

[0006]

The light weight roller is
Since it has both a large rigidity and a small moment of inertia, it is possible to eliminate various problems that occurred during running or stopping of the printed material, and because the moment of inertia is small and the running tension of the printed material is small, The contact force with the lightweight roller has decreased, and the adhesion of foreign matter such as ink from the printing material to the lightweight roller has decreased.However, regarding the latter of the problems of the conventional technology, namely, the adhesion of foreign matter such as ink, It could not be completely eliminated and it was necessary to remove it after pausing printing or at the end of printing.

Further, the fiber-reinforced plastic cylinder is formed by laminating the reinforcing fiber and the plastic,
The light weight roller having a relatively low roundness and straightness and having such a cylinder as a main material tends to have a poor rotational balance, and a light weight roller which is easy to balance is required. On the other hand, the device for automatically wiping the guide roller uses the frictional force due to the contact between the printed material and the outer peripheral surface of the guide roller as the rotational driving force of the guide roller, and the rotational peripheral speed of the guide roller and the traveling speed of the printed material. Has the advantage that the outer peripheral surface of the guide roller can be rubbed by the traveling printing material without applying unnecessary tension load to the printing material by autonomously generating the difference between and within the allowable tension range of the printing material. .

However, a transmission mechanism for maintaining a plurality of guide rollers in linkage with each other is required, which complicates the construction, increases the associated work such as maintenance, and further increases the cost. In addition, the rotational peripheral speeds of the plurality of guide rollers maintained in linkage by the transmission mechanism are balanced by the rotational torques due to the respective frictional forces acting between the outer peripheral surfaces of all the linked guide rollers and the running printing material. In this state, all linked guide rollers rotate. Therefore, when the frictional force acting between one of the linked guide rollers and the running printing material is extremely larger than the frictional force acting between the other guiding roller and the running printing material,
The one guide roller rotates with almost no influence of the other guide rollers, and there is almost no difference between the rotational peripheral speed and the traveling speed of the printed material, and the outer peripheral surface of the guide roller is the traveling printed material. Could not be rubbed effectively by.

It is an object of the present invention to provide a lightweight roller which is extremely simple and inexpensive, does not increase maintenance work, and is free from dirt. The purpose of the present invention is to provide a lightweight roller that can be easily adjusted.

[0010]

In order to achieve the above object, the guide roller according to the present invention is a device for moving and handling a printed object, the inner surface of both sides of a cylindrical body made of fiber reinforced plastic. A bearing housing or a terminal member having a shaft is attached to the cylinder, and the outer peripheral surface of the fiber-reinforced plastic cylinder is covered with a metal cylindrical body, and a large-diameter peripheral surface and a small-diameter peripheral surface are mixed on the metal cylindrical outer peripheral surface. And hard chrome plating,
The large-diameter peripheral surface and the small-diameter peripheral surface are in contact with each other at the same time, and are arranged so as to be rotated by a frictional force with a printing material that runs. Further, the area ratio of the large-diameter peripheral surface and the small-diameter peripheral surface of the outer peripheral surface with which the printed material comes into contact is set to 1:10 to 10: 1. Further, the outer diameter of the small-diameter peripheral surface of the outer peripheral surface with which the printed material comes into contact is 95% or more and less than 100% of the outer diameter of the large-diameter peripheral surface. Further, the balance adjusting member can be attached to and detached from the outer surface of the terminal member.

[0011]

[Operation] The printing material that travels in contact with the large diameter peripheral surface and the small diameter peripheral surface of the guide roller tries to rotate the large diameter peripheral surface and the small diameter peripheral surface at the same speed. However, since the large-diameter peripheral surface and the small-diameter peripheral surface have different radii, the angular velocity of the large-diameter peripheral surface and the small-diameter peripheral surface is expressed by the following relational expression: angular velocity (ω) = running speed (V) / radius (r) of the printing material. Inevitably try to be different. However, since the outer peripheral surface of the guide roller is integral, the angular velocity of the large-diameter peripheral surface and the angular velocity of the small-diameter peripheral surface influence each other and rotate at an appropriate angular velocity between these two angular velocities. Therefore, the rotational peripheral speeds of the large-diameter peripheral surface and the small-diameter peripheral surface are both different from the traveling speed of the printing object that travels in a state of contact therewith, and the large-diameter peripheral surface and the small-diameter peripheral surface are in contact with each other. It slides between the printed material running in the state of being rubbed and is rubbed by the printed material.

Further, since the guide roller is lightweight and has a small moment of inertia, the traveling tension of the printed material can be reduced. Therefore, the contact force between the guide roller and the printed material becomes small, slipping occurs relatively easily between the outer peripheral surface of the guide roller and the printed material, and the printed surface is not strongly rubbed. Further, the rotation of the guide roller is corrected by the balance adjusting member that is attached to and detached from the terminal member.

[0013]

EXAMPLES Examples of the present invention are schematic perspective views of a guide roller shown in FIGS. 1 and 2, and partial side perspective views showing a schematic side view of one side of the guide roller. 4 and FIG. 5, which is a partial cross-sectional perspective view schematically showing the contact state between the guide roller and the printing material.

Reference numeral 1 is a guide roller. The guide roller 1 has a large-diameter peripheral surface 3 on which the outer peripheral surface 2 in contact with the printed material W contacts.
And the small diameter peripheral surface 4 are formed in a mixed state. That is, as shown in FIGS. 3 and 4, a bearing for receiving a fixed shaft 6 appropriately fixed to both inner surfaces of a cylindrical body 5 made of fiber reinforced plastic which is a composite material in which fibers such as carbon fibers and an appropriate plastic are laminated. Attaching an end member 8a having a bearing housing 7 on which a BR can be mounted or an end member 8b having a shaft 9 and preventing fiber fluffing by processing the outer peripheral surface of the cylindrical body 5 made of fiber reinforced plastic , The metal cylinder 10 made of copper, aluminum or the like is integrally formed so as to be a base material for plating described later, and the outer surface of the metal cylinder 10 is formed into a shape as shown in FIGS. 1 and 2, for example. The diametrical surface and the small diametrical surface are provided in a mixed manner, and the hard chrome plating 1 is provided for hardening and smoothing the surface.
The outer peripheral surface 2 which is covered with 1 and in which the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4 are mixed and which is in contact with the printing object W is formed.

Then, the guide roller 1 is rotated with respect to the fixed shaft 6 by the traveling of the printing material W in contact with the outer peripheral surface 2, or the shaft 9 is supported by an appropriate bearing (not shown), and the shaft 9 is supported. The guide roller 1 is configured to rotate integrally with the. The guide roller 1 shown in FIG. 1 has a large-diameter peripheral surface 3
2 and the closed loop of the small-diameter peripheral surface 4 are alternately arranged side by side in the axial direction of the guide roller 1 to form the outer peripheral surface 2 of the guide roller 1. The guide roller 1 shown in FIG.
A large-diameter peripheral surface 3 and a small-diameter peripheral surface 4 are arranged side by side in a spiral shape to form an outer peripheral surface 2 of the guide roller 1.

In FIGS. 3 and 4, the outer peripheral surface 2 is simplified and shown with the same diameter. In any of the guide rollers 1, the difference Z (see FIG. 5) between the radius R3 of the large-diameter peripheral surface 3 (see FIG. 5) and the radius R4 of the small-diameter peripheral surface 4 (see FIG. 5) is the outer circumference of the guide roller 1. When the printing object W comes into contact with the surface 2, the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4 can be simultaneously contacted (see FIG. 5).
(See below), and the extent to which slippage can be generated between the printing material W and the outer peripheral surface 2 of the guide roller 1 which will be described later, and is appropriately determined in consideration of the rigidity of the printing material W, for example, a small diameter. The radius R4 of the peripheral surface 4 is 95% or more of the radius R3 of the large-diameter peripheral surface 3.

The area ratio of the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4 is set to such an extent that a slip between the material to be printed W and the outer peripheral surface 2 of the guide roller 1, which will be described later, can be generated. It is appropriately determined in consideration of the balance between the contact area between the large-diameter peripheral surface 3 and the print object W and the contact area between the small-diameter peripheral surface 4 and the print object W. For example, the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4 And the area ratio is 1:10 to 10: 1. The guide roller 1 is attached to the outer surface of the terminal members 8a and 8b.
Balance adjustment member 1 for correcting the balance of rotation of the
2 is provided so as to be attachable / detachable by, for example, a bolt 13.

Next, the guide of the material W to be printed by the guide roller 1 will be described. The outer peripheral surface 2 of the guide roller 1 guides the traveling printing material W. Since the guide roller 1 is lightweight and has a small moment of inertia, the material W to be printed travels with a small traveling tension. The guide roller 1 rotates as the print material W travels due to the frictional force between the outer peripheral surface 2 and the print material W contacting the outer peripheral surface 2.

By the way, the outer peripheral surface 2 of the guide roller 1
Is formed of a large-diameter peripheral surface 3 and a small-diameter peripheral surface 4, and the material W to be printed travels at a speed V while being in contact with the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4 all at once. Therefore, the large diameter peripheral surface 3 is V /
Attempting to rotate at an angular velocity of R3, the small diameter peripheral surface 4 is V / R4
Try to rotate at the angular velocity of. However, the outer peripheral surface 2 of the guide roller 1 is integrally formed with the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4, so that the large-diameter peripheral surface 3 and the small-diameter peripheral surface 4 can rotate independently at different angular velocities. I can not do it, the guide roller 1
The angular velocity V / R3 at which the large-diameter peripheral surface 3 tries to rotate and the angular velocity V / R4 at which the small-diameter peripheral surface 4 attempts to rotate rotate at an angular velocity ω mutually affecting each other, and as a result, the large-diameter peripheral surface 3 And the printing object W, and between the small diameter peripheral surface 4 and the printing object W, that is, between the outer peripheral surface 2 of the guide roller 1 and the printing object W, slippage occurs, and the outer peripheral surface 2 of the guide roller 1 Is rubbed by the traveling printing material W.

Angular velocity ω of rotation of the guide roller 1
Is such that the frictional force due to the slip between the large-diameter peripheral surface 3 and the printed part W and the frictional force due to the slip between the small-diameter peripheral surface 4 and the printed material W are balanced (V / 3R) < It is determined that ω <(V / 4R). Therefore, the outer peripheral surface 2 of the guide roller 1 is surely rubbed by the printed material W that is in contact with the guide roller 1 to prevent foreign matter such as ink from adhering to the outer peripheral surface 2 and is automatically cleaned.

On the other hand, since the cylindrical body made of fiber reinforced plastic is formed by laminating reinforcing fiber and plastic, the roundness and straightness are unstable and relatively low, and this is the main material. The guide roller 1 sometimes needs correction of the rotational balance. In such a case, for example, the ring-shaped balance adjusting member 12 is appropriately processed, that is, the balance adjusting member 12 is subjected to cutting or hole processing, or where the cutting or hole processing is performed, a metal is applied, and The guide roller 1 is attached to one or both end members 8a and 8b. When it is not necessary to correct the rotation balance, the balance adjusting member 12 may not be attached.

The present invention is not limited to the embodiments described above, and for example, the shapes and arrangements of the large diameter peripheral surface 3 and the small diameter peripheral surface 4 may be carried out in an appropriate form, and the shape of the balance adjusting member 12 may be changed. Is not limited to an annular shape, and may have any suitable shape, and may be a plurality of members. The point is that it includes design modifications that do not depart from the scope of the claims.

[0023]

As described above, the practice of the present invention prevents foreign matter such as ink from adhering to a guide roller that guides an object to be printed and which is traveling, and prevents the guide roller from becoming dirty. The outer peripheral surface is reliably and automatically cleaned. Further, since the guide roller is light in weight, the traveling tension of the material to be printed is small and the contact force between the material to be printed and the peripheral surface of the guide roller is small, so that there is almost no effect on the printing surface due to rubbing due to slippage between the two. Therefore, the printed material is not contaminated or the print quality is not impaired. Further, it is not necessary to perform a cleaning operation or a cleaning operation for the guide roller after the printing is interrupted and / or after the printing is completed, so that labor saving and labor saving can be promoted.

In addition, according to the present invention, it is possible to easily correct the poor rotational balance that is frequently observed in the guide roller mainly made of the fiber-reinforced plastic cylindrical body. This is advantageous in reducing manufacturing costs. Furthermore, it can be easily installed by simply replacing it with a conventional guide roller, and it is relatively inexpensive, and running costs such as cleaning agents can be eliminated. This is also effective in reducing running costs through improvements.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of another embodiment of the present invention.

FIG. 3 is a partially sectional perspective view showing a schematic configuration of an embodiment of one side of a guide roller of the present invention, in which an outer peripheral surface is simplified and shown with the same diameter.

FIG. 4 is a partial cross-sectional perspective view showing a schematic configuration of another embodiment of one side of the guide roller of the present invention, in which the outer peripheral surface is simplified and shown with the same diameter.

FIG. 5 is a partial cross-sectional perspective view schematically showing a contact state between the guide roller of the present invention and a material to be printed.

[Explanation of symbols]

1 ... Guide roller, 2 ... Outer peripheral surface, 3 ... Large diameter peripheral surface, 4 ...
Small diameter peripheral surface, 5 ... Cylindrical body made of fiber reinforced plastic, 6 ...
Fixed shaft, 7 ... Bearing housing, 8a, 8b ... Terminal member,
9 ... Shaft, 10 ... Metal cylinder, 11 ... Hard chrome plating,
12 ... Balance adjusting member, 13 ... Bolt, BR ... Bearing,
W ... Print object, R3 ... Large diameter peripheral surface radius, R4 ... Small diameter peripheral surface radius, Z ... Large diameter peripheral surface radius and small diameter peripheral surface radius.

[Procedure amendment]

[Submission date] September 1, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Angular speed ω of rotation of the guide roller 1
Is such that (V / R3 ) <so that the frictional force due to the slip between the large-diameter peripheral surface 3 and the printed portion W and the frictional force due to the slip between the small-diameter peripheral surface 4 and the printed material W are balanced. It is determined that ω <(V / R4 ). Therefore, the outer peripheral surface 2 of the guide roller 1 is surely rubbed by the printed material W that is in contact with the guide roller 1 to prevent foreign matter such as ink from adhering to the outer peripheral surface 2 and is automatically cleaned.

Claims (4)

[Claims] 1. A device for running and handling a printed substrate, wherein a fiber reinforced plastic cylinder is provided with a bearing housing or a terminal member having a shaft on both inner surfaces of the cylinder, and a fiber reinforced plastic cylinder. The outer peripheral surface of the body is covered with a metal cylindrical body, and the outer peripheral surface of the metal cylindrical body is provided with a large-diameter peripheral surface and a small-diameter peripheral surface in a mixed manner, and this is coated with hard chrome plating. The guide roller is provided so as to rotate due to the frictional force between the printing material and the small-diameter peripheral surface that are in contact with each other and run at the same time. 2. The guide roller according to claim 1, wherein the area ratio of the large-diameter peripheral surface and the small-diameter peripheral surface of the outer peripheral surface contacting the printing medium is 1:10 to 10: 1. 3. The outer diameter of the small-diameter peripheral surface is 95 times that of the large-diameter peripheral surface.
% Or more and less than 100%. The guide roller according to claim 1. 4. The guide roller according to claim 1, wherein the balance adjusting member is attachable to and detachable from the outer surface of the terminal member.