JPH0741300B2 - Bending axis crown type roll - Google Patents

Description

The present invention relates to a bent roller shaft provided with a plurality of divided crown-shaped rollers, which is suitable for running thick metal plates, high-temperature plates, and the like. The present invention relates to a bent shaft crown type roll having an excellent function of maintaining on a roller surface.

2. Description of the Related Art Conventionally, a crown-shaped roll having a barrel-shaped roller provided on a straight roller shaft has been used for traveling a thick metal plate.

However, there is a problem in that the metal plate is so meandered during running that it cannot be run at a satisfactory speed, and the efficiency of the rolling process is poor.

Means for Solving the Problems The present invention overcomes the above-mentioned problems by a bent shaft crown type roll in which a bent roller shaft is provided with a plurality of divided crown type rollers.

That is, according to the present invention, the outer peripheral length is reduced from the central portion toward the end portion in the axial direction, and a plurality of divided rollers are rotatably provided on a bent roller shaft with a gap, and the division is performed. The present invention provides a bent shaft crown type roll characterized in that it has a gear between the rollers which is rotated together with the roller with respect to the roller shaft and serves to ensure the above-mentioned gap between the rollers under rotation and synchronous rotation. .

By providing a crown-shaped roller on the bent roller shaft, it is possible to form a roll in which the curve of the outer peripheral line in the axial direction is flattened in a part of the outer periphery of the roller. As a result, it is possible to use the flat portion to run the traveling object in a flat state, or in a state closer to a flat state, and in a state of widely contacting the roller surface.

On the other hand, by dividing the crown-shaped roller and attaching it to the roller shaft with a gap, a roll having a structure in which the roller can rotate with respect to the bent roller shaft can be obtained.

As a result, it is possible to obtain a roll having a function of preventing meandering due to the effect of peripheral speed difference based on the difference in the outer peripheral length of the roller or a function of maintaining the traveling object on the roller surface. In addition, it is possible to allow the above-mentioned function to act favorably on the basis of the large contact width between the roller and the traveling object, and to suppress the occurrence of inconvenient distortion.

Furthermore, when the running object is introduced from the inner angle side to the outer angle side of the bent roller shaft based on the form of the roll, a force for sending the running object in the diverging direction acts, and this acts as a force in the width expanding direction. It can be used as a wrinkle-preventing roll, a wrinkle-rolling roll, or a width-expanding roll in some cases. On the other hand, when the traveling object is introduced from the outer angle side of the roller shaft, a force in the converging direction acts, and this acts as a force in the width reducing direction, and can be used as a wrinkled roll.

Practical Example FIG. 1 shows an example of the bent shaft crown type roll of the present invention. This is a roll R1 belonging to the linear type, and is composed of a roller shaft 1a bent at the central portion and an iron roller 2.

The roller 2 is divided into two parts at the center and is formed symmetrically. That is, the roller 2 has the same shape as the divided rollers 2a, 2
The split roller 2a is a hollow body having a truncated cone shape. The roller 2 is provided with a space between the divided rollers 2a, 2a, and the large diameter side thereof is the roller shaft 1
It is made up of those placed on the central side of a.
The gap between the divided rollers 2a, 2a is for preventing the large diameter portion of the divided rollers from coming into contact with each other and becoming unrotatable when the divided rollers rotate.

A pair of ring-shaped gears 4, 4 are provided in the gap between the split rollers 2a, 2a. The inner diameter of the gear 4 is formed to be slightly larger than the outer diameter of the roller shaft 1a. The gear 4 is fixed to the end flange 5, and the end flange 5 is fixed to the ring 6 attached to the outer circumference of the bearing 7. This allows
The gear 4 rotates with the split roller 2a via the end flange 5 and the ring 6, and maintains the gap between the split rollers 2a, 2a. The pair of gears 4, 4 are connected in a meshed state. As a result, the synchronous rotation of the split rollers 2a, 2a is achieved, the integrated rotation of the rollers 2 is realized, and the traveling object is prevented from deviating from the roller surface due to the difference in angular velocity between the left and right split rollers 2a, 2a. It The split roller 2a cannot rotate with respect to the roller shaft 1a by the bearings 7, 7 arranged at both ends thereof.

The outer shape of the roller 2 constituted by the divided rollers 2a, 2a is
When the roll R1 is installed such that the outer peripheral length gradually decreases from the central portion toward the end portion in the axial direction and the bent roller shaft 1a forms a catenary line, the upper portion of the roller outer periphery 21
Is in a state of forming a straight line over the axial direction.

Reference numeral 3 in the figure is a bellows cover mounted between the end flanges 5 to prevent the connecting portion between the split rollers 2a and 2a from being soiled, and 4a is extended to the gear 4 to stabilize the rotation. A sleeve portion, 8 is a stepped portion formed on the roller shaft 1a in order to maintain the distance between the bearings 7, 7, 9 is a ring (corresponding to the ring 6) provided on the outer periphery of the bearing 7 and rotating with the split roller 2a, 10 is an end flange fixed to the outside of the ring 9 (corresponding to the end flange 5), 11 is a holding sleeve mounted on the roller shaft 1a for fixing the bearing 7, and 12 is a holding sleeve for positioning the split roller 2a. A ring provided outside the sleeve 11 and a screw shaft 13 for fixing the ring 12 to the roller shaft 1a.

FIG. 2 shows another embodiment of the bent shaft crown type roll of the present invention. This roll R2 belongs to a chevron type, and when the roll R2 is installed in a state where the roller shaft 1a bent at the central part forms a catenary line, the upper part of the outer circumference
22 comprises a roller 2 forming a generally chevron line in the axial direction. It has a structure similar to the roll R1 except that the outer diameter ratios at both ends of the split rollers 2b, 2b constituting the roller 2 are different.

3A and 3B show still another embodiment of the bending shaft crown type roll of the present invention. This roll R3 belongs to the concave type, and has a roller shaft 1b bent at the center.
When the roll R3 is installed in such a way that forms a catenary,
The upper part 23 of the outer circumference consists of the roller 2 which forms a substantially suspended (concave) line in the axial direction. The roller shaft 1b has a structure similar to that of the roll R1 except that the bending degree of the roller shaft 1b is larger than that of the roll shaft 1a. As shown in FIG. 3B, the concave type roll has a straight outer peripheral line between the general catenary line portion 23 in the upper portion of the roller and the general catenary line portion 25 in the lower portion of the roller in the above-mentioned installed state. It has a portion 24.

The roll of the present invention can be easily manufactured, for example, by a method of assembling the constituent parts in an appropriate order.

The roller shaft used in the present invention is bent. As a result, the shape of the crown-shaped roller can be modified. That is, as illustrated in FIG. 1 to FIG. 3, in a crown-shaped roller having a peripheral length in the central portion larger than that in the end portion, a part of the roller outer periphery (21, 22, 2, 2
3,24) can be a flattened roll.

The bending degree of the roller shaft is not particularly limited. Generally, the degree of bending is 45 to 179.5 degrees based on the internal angle (see θ in FIG. 4A), although it depends on the length of the roller shaft. As the bending degree of the roller shaft is increased, the difference in outer peripheral length between the end portion and the central portion of the roller can be increased. Then, the greater the difference in outer peripheral length between the end portion and the central portion of the roller, the greater the force for maintaining the traveling object on the roller surface. The length of the roller shaft is 8 mm to 20 mm.
m, especially 12 mm to 10 m, but is not limited to this.

The diameter of the roller shaft is also not particularly limited. Generally 1m
m ~ 5m, especially 3mm ~ 3m.

There is no particular limitation on the sectional shape or specifications of the roller shaft. It may be in the shape of a round bar as in the embodiment, or may be a bar 1c in the form of a combination of a plurality of plate-like objects 41 having a radial cross section as shown in FIG. 4A, or FIG. As shown in B, the rod-shaped body 1c is housed in the pipe 42, such as 1d, which is lightweight and has high bending strength,
Alternatively, it may be one capable of cooling the roll via a roller shaft.

The roller used in the present invention is divided into a plurality of rollers. That is, a split roller having an outer diameter of a truncated cone is provided with a proper gap so that the split roller is symmetrical with respect to the central portion and the outer peripheral length decreases from the central portion toward the end portion in the axial direction. It consists of a combination arrangement.
As a result, the shape of the entire roller can be a crown shape, and the roller can have a meandering preventing function or a function of keeping the traveling object on the roller surface.
The number of divided rollers is arbitrary, but in general, it is a system of 1 or 3, that is, two or four divided rollers. In addition, between the divided rollers, that is, between the divided rollers,
A gear is arranged which rotates together with the split rollers with respect to the roller shaft and which also serves to ensure the synchronous rotation and the gap between the split rollers under the rotation. The gear wheel has an advantage that the rotary shaft of the split roller is less likely to be eccentric when integrated with each split roller.

The form of the roller when it is rotatably provided on the roller shaft via a bearing is typified by a linear type, a chevron type, and a concave type as in the embodiments shown in FIGS. That is, based on the appearance of the roll, the straight roller shaft is provided in a predetermined state so as to have a crown shape as a whole on a straight roller shaft, and the central portion of the straight roller shaft is bent in one direction. To be done.

The above-described form of the roller in the roll of the present invention may be established based on the vertical elevation projection of the roller shaft. That is, in the range where the center line of the roller shaft in the shadow picture when projecting the bent roller shaft on a vertical vertical plane is the catenary line, the outer peripheral line in the upper part of the roller is in a roughly catenary line state, or in a straight line state, or All you need is the Yamagata line.

There is no particular limitation on the material forming the roller, that is, the divided roller. Since a bent roller shaft is used in the present invention, that is, a roller shaft in which a plurality of straight shafts are connected in a bent state is used, it is possible to use the same material as the conventional roller constituent material. it can. Therefore, rubber or plastic rollers, metal or ceramic rollers, etc. can be mentioned as typical examples. Of course, a roller covered with cloth or the like may be used. A rubber-based roller is desirable in terms of preventing slippage of a running object, and a metal-based or ceramic-based roller is desirable in terms of heat resistance or conductivity preventing dust adhesion.

The roller may have a groove or the like on its outer periphery for an appropriate purpose, such as draining or slip prevention.

A feature of the roller according to the present invention is that the crown-shaped roller can be rotated with respect to the roller shaft in a state where the crown-shaped roller has an axially flattened portion in a part of its outer circumference, without being restricted by the constituent material of the roller. There is a point that can be provided. Therefore, the split roller can be made of a rigid material such as a metal plate or a heat-resistant material, and the material forming the roller has high strength and heat resistance, such as when the traveling object is a metal plate or a high temperature object. Even when special performance such as the above is required, the feature of the present invention is that a roll formed of a crown-shaped roller satisfying the required performance and having the above-mentioned special shape can be formed.

The size of the split roller is not particularly limited, and is appropriately determined depending on the application of the roll, the degree of bending of the roller shaft, and the like. Generally, the length is 10 m or less, especially 3 mm to 5 m, the outer circumference length of the maximum diameter part is 10 mm to 10 m, the outer diameter length is 20 mm to 5 m, and the difference in the outer circumference length between the maximum diameter part and the minimum diameter part is 0.5 mm to 1 m, Especially, the size is 1 mm to 30 cm. . Also, in the concave type and the mountain type, when the roller shaft shows the maximum suspended depression state, the gap (d) between the roller surface at the center of the roller upper part and the straight line connecting both ends of the roller is 0.1 to 50 mm. It is general.

The roll of the present invention has the function of preventing the meandering or maintaining the traveling object on the roller surface because the roller has a crown shape.

Further, the roller has a crown shape and the roller shaft is bent, so that the roller has a function of exerting an axial force on the traveling object. With this function, it can be used, for example, as a wrinkle-rolling roll, a wrinkle-preventing roll or a width-expanding roll (force in the width-expanding direction) or a wrinkled roll (force in the width-reducing direction). As a running object that can be used as the wrinkle-rolling roll or the wrinkled roll, a metal thin plate or foil, a plastic film, a cloth,
Examples of the sheet material include paper, but are not limited thereto.

The roll R3 is installed so that the force in the width expanding direction by the roll of the present invention causes the traveling object S to travel from the inner angle side to the outer angle side of the bent roller shaft 1b in FIG. 5 (arrow Y). It can be obtained by That is, the force in the width expanding direction is based on the action of the roll in the diverging direction in the running direction.

On the other hand, the force in the width reduction direction is, for example, in FIG.
Can be obtained by arranging the roll R3 so that the roller shaft 1a runs toward the inner angle side from the outer angle side (arrow Z). That is, the force in the width reducing direction is based on the action of the roll in the traveling direction in order to send out the traveling object in the converging direction.

In any of the above installation methods, it is necessary to install the roll so that the traveling object comes into contact with the flattened portions (21,22,23,24) of the rollers, which may cause a biased permanent distortion in the traveling object. It is preferable in order to prevent or suppress the above, and to stably run the running object at high speed.

An advantageous installation method of the rolls of the present invention is a system in which a pair of rolls R1 and R1 are arranged opposite to each other and a traveling object is introduced between the rolls as shown in FIG. 6, for example. According to this method, the slip of the traveling object on the rollers can be further reduced, and at the same time,
When the force in the width direction is applied, the forces in the width direction by the respective rolls can be combined and applied to the traveling object.

In FIG. 6, the linear type rolls R1 are arranged so that the linear portions 21 of the rollers face each other to form the pinch portion. However, the mountain type and concave type rolls are Alternatively, these may be appropriately combined and may be arranged so as to oppose each other so that an axial force acts. In the figure, 14 is a gear fixed to the outer periphery of the end flange (10) in order to synchronize the rotation of the rolls R1 and R1, 15 is a gear fixed to the gear 14 in order to receive rotation assistance, and in the present invention, In many cases, the gear 14 can be omitted.

EFFECTS OF THE INVENTION According to the present invention, a roll having a bent roller shaft provided with a crown-shaped roller is provided. Therefore, the meandering prevention function or the function of maintaining the traveling object on the roller surface and the force in the width direction on the traveling object are provided. A roll having a function of exerting the action can be used.

Further, it is possible to form a roll having a flat or nearly flat portion in the axial direction in a part of the outer circumference of the roller by using a roller having appropriate performance such as a rigid roller or a heat resistant roller in addition to the flexible roller. For example, it is possible to obtain the roll of the above-described form that can be applied to a traveling object including a metal thick plate or a high temperature plate.

On the other hand, by utilizing the above-mentioned flattened portion of the roller, it is possible to cause the traveling object to widely contact the roller surface and travel in a state closer to being flat. As a result, while preventing or suppressing the occurrence of uneven distortion in the running object, the contact width effect allows the above-described function to work with a larger force, and the running object can travel more stably and at high speed. You can

In addition, the flattened portion on the outer circumference of the roller can be utilized to advantageously perform the opposing arrangement of the rolls. Furthermore, since the gear serves as a guarantee of the gap between the divided rollers and the synchronous rotation, the roller is rotated together with the divided roller with respect to the roller shaft.
The gear can be formed integrally with the split roller, and the necessary parts can be omitted, and the features described above can be obtained. In particular, the structure of a roll that can stably run a traveling object at high speed can be simplified and easily assembled, Its manufacturing efficiency is excellent.

[Brief description of drawings]

FIG. 1 is a partial sectional side view of an embodiment of a roll of the present invention. FIG. 2 is a side view of another embodiment. FIG. 3A is a side view of still another embodiment, and B is an explanatory view of its roll form. FIG. 4A is a perspective view showing an example of another roller shaft, and B is an end view showing another example of the roller shaft. FIG. 5 is an explanatory view of a method of installing a roll for applying a force in the width direction (Y: expansion, Z: contraction) to a running object. FIG. 6 is an explanatory diagram of an example in which rolls are arranged so as to face each other. R1, R2, R3: Bent shaft crown type roll 1a, 1b, 1c, 1d: Bent roller shaft 2: Crown type roller 2a, 2b: Split roller 21,22,23,24: Flattened part of roller outer circumference S : Traveling object Arrow Y: Width expansion direction Arrow Z: Width reduction direction

Claims (6)

[Claims] 1. A roller shaft having an outer peripheral length that decreases from the central portion toward the end portion in the axial direction and is rotatably provided on a bent roller shaft with a gap provided, and the divided roller is divided. A bent shaft crown type roll having a gear between the rollers, the gear rotating together with the roller with respect to the roller shaft to ensure the above-mentioned gap between the rollers and the synchronous rotation. 2. The roll according to claim 1, wherein the roller is divided into two parts at a central portion. 3. The roll according to claim 1, wherein the roller is made of a metal plate. 4. The roll according to claim 1, wherein the roller shaft is bent at the central portion. 5. The roll according to claim 1, which is used for running a thick metal plate. 6. The roll according to claim 1, wherein a pair of rolls are arranged so as to face each other, and a traveling object is introduced between the rolls.