JPH0688711B2 - Thick roll and pinch device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a taper-shaped roller made of a tapered cylinder provided on a roller shaft so that a part of its outer circumference is flattened. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thick roll which is suitable for traveling and the like and has an excellent function of preventing deviation of a traveling object, and a pinch device using the same.

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

However, when the traveling object such as a metal thick plate is greatly meandered during traveling and the traveling object is easily deviated from the roller surface, the traveling object cannot be traveled at a satisfactory speed, and the efficiency of the rolling process is poor. However, there is a problem that a pinch device that is practically satisfactory cannot be obtained.

Means for Solving the Problems The present invention overcomes the above problems by using a thick roll provided with a tapered roller made of a tapered cylindrical body on a roller shaft so that a part of the outer circumference is flattened. is there.

That is, the present invention is a roll in which a roller having a tapered shape is rotatably provided from a central portion toward an end portion through a plurality of bearings on a roller shaft, and the tapered roller has a plurality of tapered cylindrical bodies. A bearing in which the large diameter side is arranged with the roll center side and bearings are provided at at least two locations on the large diameter side and the small diameter side of the cylindrical body, and the roller shaft is arranged on the large diameter side of the cylindrical body. Has a large outer diameter, and the shaft center of that part is eccentric with the shaft center of the mounting part of the bearing arranged on the smaller diameter side of the cylinder, and the large diameter of the cylinder due to the eccentricity of the roller shaft. A thick roll characterized in that a part of the outer circumference of the roller is flattened in the axial direction based on the deviation of the rotational center position between the bearings on the side of the small diameter and the bearing on the small diameter side,
And a pinch device in which a pair of the rolls are arranged so that flattened portions of the rollers extending in the axial direction are opposed to each other.

Action By arranging a plurality of tapered cylinders with the large diameter side being the roll center side and combining the cylinders so that the outer peripheral length decreases from the roll center toward the end, The roller may be tapered from the center toward the end. Further, bearings are provided at at least two locations on the large diameter side and the small diameter side of the tubular body, and the center of rotation between the bearings on the large diameter side and the small diameter side of the tubular body is eccentric due to the different diameters of the roller shafts. By deviating, the tapered roller can be made into a roll that rotates with respect to the roller shaft while forming a flattened portion in the axial direction on a part of its outer circumference. As a result, the flattened portion of the roller can be used to run the running object in a flat or near-flat state, and in a state where it is in wide contact with the roller surface. A roll having a meandering prevention function based on the peripheral speed difference effect or a deviation prevention function for maintaining the traveling object on the roller surface can be provided, and the function is advantageous because the contact width between the roller and the traveling object is large. It is possible to cause the traveling object to travel while suppressing the occurrence of uneven strain on the traveling object due to the flattening traveling.

Further, a force in the width expanding direction, such as a wrinkle preventing force and a wrinkle extending force, is applied to the traveling object by the effect of the traveling direction of the traveling object (the end side direction of the roller) based on the tapered shape of the cylindrical body forming the roller. You can also

Example FIG. 1 shows an example of the thick roll of the present invention. Reference numeral 20 is a roller shaft, reference numerals 8 and 12 are bearings, and reference numeral 15 is a roller made of the cylindrical body 7.

The roller shaft 20 includes bearings 8 provided on the large diameter side and the small diameter side of the tubular body 7,
The outer diameter of the mounting position of 12 is changed so that the larger diameter side is thicker, and the shaft center is eccentric. The roller 15 has a tapered shape in which a pair of tapered cylindrical bodies 7 are arranged with their large diameter sides inside. The pair of cylindrical bodies 7 are arranged so as to face each other with a slight gap therebetween in order to prevent the large-diameter side end portions of the pair of cylindrical bodies 7 from coming into contact with each other when they rotate with respect to the roller shaft 20 and becoming unrotatable. Cylinder 7
Consists of an iron cylinder 5 with a rubber layer 6 provided on the outer periphery thereof. Each of the cylinders 7 is mounted on the roller shaft 20 via two self-aligning bearings 8 and 12 arranged at both ends thereof, so that each cylinder 7 forming the roller 15 is attached to the roller shaft 20. It can rotate with respect to 20. Bearings 8 and 12 based on the eccentricity of the shaft center due to the different diameter of the roller shaft 20 described above.
In the system in which the position of the rotation center between the bearings 8 and 12 does not change and the position of the rotation center of each bearing 8 and 12 does not change, the tapered roller 15 has a linear line portion 16 axially flattened in a part of its outer circumference. Rotate while forming sequentially.

In addition, 2 is an oil seal. Reference numerals 3 and 13 denote seal plates fixed to the ends of the tubular body 7 and also serve as fixing members for the bearings 8 and 12, respectively. Reference numerals 4 and 11 denote ring bodies screwed to the roller shaft 20 and are fixing members for the bearings 8 and 12, respectively. The roller shaft 20 is formed by cutting so that the step of the outer diameter changing portion can be used as a stopper for the bearings 8 and 12.

FIG. 2 shows another embodiment of the trunk roll of the present invention. This roll R6 belongs to a convex type, and a large diameter side and a small diameter side of the cylindrical body 7 are rotated so that a flattened portion of a part of the outer circumference of the roller 25 extending in the axial direction sequentially forms a convex line 26. The amount of positional deviation of the rotation center between the bearings on the side is adjusted so that the degree of eccentricity of the shaft center due to the different diameter of the roller shaft 1 is smaller than that in the above-described embodiment.

FIG. 3 shows still another embodiment of the thick roll of the present invention. The roll R7 belongs to the concave type, and the large-diameter side and the small-diameter side of the tubular body 7 are rotated so that the flattened part of the outer periphery of the roller 35 extending in the axial direction sequentially forms the concave line 36. The amount of positional deviation of the rotation center between the bearings is adjusted so that the degree of eccentricity of the shaft center due to the different diameter of the roller shaft 1 is larger than that in the embodiment of FIG. As shown in FIG. 4, the roll (R7) belonging to the concave type is provided between the flattened portion 36 formed by the concave line on the outer circumference of the roller and the outer peripheral line portion 38 facing the flattened portion 36 having a larger degree of bending. Part where the outer circumference is a straight line 37
On both sides of the concave line portion 36.

The convex type and concave type rolls are advantageously used in the case of compensating the displacement of the roller due to the deflection of the roller shaft to form a linear flattening of a part of the outer circumference of the roller in the installed state or the operating state.

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

In the present invention, by using a plurality of tapered cylinders,
A tapered roller is formed in which the outer peripheral length decreases from the central portion of the roll toward the end portion in the axial direction. The respective cylinders are arranged such that the large diameter side thereof is the center side of the roll, and are arranged symmetrically with respect to the center of the roll. When the left half or right half of the roller is formed of two or more cylinders, the cylinders are combined such that the outer peripheral length decreases from the center of the roll toward the end in the axial direction. . The number of cylinders forming the roller is arbitrary,
Generally, it is formed by one pair or two pairs.

The tapered cylindrical body may be formed of an appropriate material. Generally, it is formed of rubber, plastic, metal, ceramic or the like. It may be a cylinder covered with sponge or cloth. A rubber-based cylinder made of rubber or rubber-lined material is preferable from the standpoint of preventing slippage of running objects, and a metal- or ceramic-based cylinder is preferred from the standpoint of preventing dust adhesion due to conductivity or heat resistance. preferable. Further, the cylindrical body may have a groove or the like on the outer periphery thereof for the purpose of draining water or preventing slippage. There is no particular limitation on the size of the cylinder,
It is appropriately determined according to the purpose of use of the roll. In general,
Length 10m or less, especially 3mm-5m, outer diameter of large diameter part 10mm-10
m, especially 20 mm to 5 m, difference in outer peripheral length between large diameter part and small diameter part 0.5
The characteristic of the roller in the roll of the present invention, which has a dimension of mm to 1 m, and particularly 1 mm to 30 cm, is that the tapered roller is axially formed on a part of its outer periphery without being restricted by the constituent material of the cylindrical body. The point is that it can be rotatably provided with respect to the roller shaft in a state having a flattened portion. Therefore, the cylindrical body can be formed of a rigid material such as a metal thick plate or a heat resistant material, and the material forming the roller has high strength and heat resistance as when the running object is a metal thick plate or a high temperature object. Even when special performance such as the above is required, it is possible to form a roll composed of a tapered roller satisfying the required performance and having the above-mentioned special shape.

Providing the above-mentioned tapered roller rotatably with respect to the roller shaft in such a state that a part of the outer circumference thereof has a flattened portion in the axial direction is provided at least at two locations on the large diameter side and the small diameter side of the cylindrical body. A bearing whose rotation center does not substantially fluctuate is provided, and the rotation center position between the bearings on the large diameter side and the small diameter side of the cylindrical body is made different from that of the roll R2 (Fig. 1) as described above. A method of shifting the shaft center based on the eccentricity of the shaft center due to the above can be mentioned. This method has an advantage that the oscill seal at the end of the cylinder can be realized with a simple structure. Note that 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,
Further, the force in the width expanding direction such as the wrinkle preventing force and the wrinkle spreading force due to the effect of the traveling direction of the traveling object becomes large.

In the present invention, the convex type and concave type rolls (R6, R
In the case of 7), the gap (d) between the roller surface at the center of the roller and the straight line connecting both ends of the roller in the flattened portion (lines 26, 36) is appropriately determined depending on the degree of deflection of the roller shaft. Although it may be set, it is generally set to 0.1 to 50 mm.

As is clear from the above, the form of the roller shaft used in the present invention is appropriately determined depending on the degree of displacement of the rotation center position between the bearings on the large diameter side and the small diameter side of the tubular body. The length and diameter of the roller shaft may be appropriately determined, generally 8 mm to 20 m, especially 12 mm to 10 m, 1 mm to 5 m, especially
It has a diameter of 3 mm to 3 m.

The features of the roller shaft in the roll of the present invention are that it can be formed as a continuous rod and that a roller shaft having a large diameter can be easily obtained because bending is not required. The cross-sectional shape of the roller shaft is not limited to the round bar as in the embodiment, but a bar-shaped body in which a plurality of plate-shaped objects are combined in a radial cross section, or the bar-shaped body is housed in a pipe. Shaped products, etc. designed to reduce weight and increase bending strength,
Alternatively, it may be one capable of cooling the roll via a roller shaft.

In the roll of the present invention, in addition to the two locations on the large diameter side and the small diameter side of the cylindrical body, if necessary, bearings are provided between them in such a manner that the rotational center position of the roller shaft is appropriately shifted by the eccentricity of the roller shaft with different diameters. The cylindrical body is rotatably provided with respect to the roller shaft via the bearing of (1) to form a tapered roller. The form of the formed roller is represented by a linear type, a convex type or a concave type as in the embodiments shown in FIGS. 1, 2 and 3 described above.

The roll of the present invention has the function of preventing the running object from meandering or deviating due to the tapered shape of the roller. Further, as shown in FIG. 5, by using the tapered cylindrical body, a function of exerting a force in a direction to widen the traveling object based on the action of sending the traveling object toward the end side of the cylindrical body 7. It also has this function, such as wrinkle straightening of running objects made of metal thin plates and foils, plastic films, cloth, paper, etc.
It can be used to prevent wrinkles.

The installation of the roll of the present invention, the wide contact between the roller surface and the traveling object in the axial direction, the action of a large deviation preventing force against the traveling object due to it, the prevention or suppression of the occurrence of biased permanent strain on the traveling object, traveling From the point of stable high-speed traveling of the object, the traveling object is the flattened part of the roller (lines 16, 26, 36,
37) It is preferable to carry out the procedure so that the vehicle travels.

An advantageous method of installing the roll of the present invention is to use a flattening line portion 16 on the outer circumference of the roller to form a pair of rolls R1 and R1 (same as roll R2) between the rollers facing each other as shown in FIG. Is a method of forming a pinch device by arranging the pinch device so that the gap or contact pressure in the direction becomes constant. The slip can be reduced.

Although a pinch device using straight type rolls R1 is shown in FIG. 6, for example, straight type and concave type rolls, convex type and concave type rolls, concave type rolls, etc. A pinch device can be formed by an appropriate combination of In FIG. 6, 41 is a gear fixed to the outer periphery of the seal plate 3 for synchronizing the rotation of the rolls R1 and R1, 42
Is a gear fixed to the gear 41 in order to receive the assist of rotation, and the gear 41 can be omitted in many cases in the present invention.

EFFECTS OF THE INVENTION According to the present invention, since the roller having the tapered shape from the central portion toward the end portion is provided, the traveling object has a meandering preventing function or a deviation preventing function, and the roller is formed of a tapered cylindrical body. A roll having a function of exerting a force in the width expanding direction on a running object can be provided.

Also, since the roller is configured to rotate while forming a flat or nearly flat portion in the axial direction on a part of the outer circumference, the flattened portion is used to make the traveling object more flat,
In addition, the roller surface can be widely contacted for traveling. As a result, it is possible to prevent or suppress the occurrence of uneven distortion in the traveling object, and moreover, the contact width effect allows the traveling object to exert the above-mentioned function with a larger force, thereby making the traveling object more stable. And it can run at high speed.

Further, since the roller is rotated with respect to the roller shaft while forming the above-described configuration by the method of displacing the rotation center between the bearings by the eccentricity of the roller shaft, it is possible to eliminate the need for bending the roller shaft. A roll composed of a thick roller shaft can be easily manufactured, and the roller can be rotated with respect to the roller shaft without deformation such as expansion and contraction of the roller shaft. In addition to the material, it is possible to obtain a roll that can be formed of a material having excellent rigidity, heat resistance, and the like, and that has various performances, for example, performance that can be applied to a running object including a metal thick plate, a high-temperature plate, or the like.

In addition, the flattened portion of the outer circumference of the roller can be used to advantageously arrange the rolls facing each other, and a pinch device using a roll having a tapered shape (crown shape) can be easily obtained.

[Brief description of drawings]

FIG. 1 is a partial sectional side view of an embodiment of a roll according to the present invention, and FIG. 2 is a side view of another embodiment. FIG. 3 is a side view of still another embodiment, and FIG. 4 is a schematic front view of the outer shape of the roller. FIG. 5 is an explanatory view of the action of the force in the width expanding direction of the roll of the present invention, and FIG. 6 is a side view of an example in which the rolls are arranged to face each other to form a pinch device. R1, R2, R6, R7: Thick roll 1,20: Roller shaft 7: Cylindrical body 8,12: Bearing 15,25,35: Tapered roller 16,26,36,37: Flattened outer circumference of roller

Claims (5)

[Claims] 1. In a roll comprising a roller shaft rotatably provided with a tapered roller from a central portion toward an end portion through a plurality of bearings, the tapered roller comprises a plurality of tapered cylindrical bodies. The bearing is arranged on the large diameter side of the cylinder with the large diameter side being the central side of the roll, and has bearings at at least two locations on the large diameter side and the small diameter side of the cylinder. The outer diameter of the mounting part is large, and the shaft center of that part is eccentric with the shaft center of the mounting part of the bearing arranged on the small diameter side of the cylinder, and the large diameter side of the cylinder due to the eccentricity of the roller shaft. And a part of the outer circumference of the roller is flattened in the axial direction based on the deviation of the rotational center position between the bearings on the small diameter side and the small diameter side. 2. The thick roll according to claim 1, wherein a flattened portion of a part of the outer circumference of the roller extending in the axial direction forms a straight line. 3. The thick roll according to claim 1, wherein a flattened portion of a part of the outer circumference of the roller extending in the axial direction forms a convex line. 4. The thick roll according to claim 1, wherein a flattened portion of a part of the outer circumference of the roller extending in the axial direction forms a concave line. 5. A pinch device in which a pair of rolls according to claim 1 is arranged so that flattened portions of the rollers extending in the axial direction face each other.