JPH0688712B2 - Fine roll and pinch device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention In the present invention, a roller in which a tapered cylindrical body is arranged so as to become thicker toward a roll end side is provided on a roller shaft so that a part of its outer circumference is flattened. The present invention relates to a thin cylinder roll suitable for running a metal thick plate, a high-temperature plate, etc., on which a force in the width expanding direction acts on a running object, and a pinch device using the same.

2. Description of the Related Art Conventionally, there has been known a drum-shaped roll in which a thin roller having an outer peripheral length increasing from a central portion toward an end portion is rotatably provided on a straight roller shaft via a bearing. . This drum-shaped roll has a function of exerting a force in the width expanding direction such as a wrinkle-stretching force and a wrinkle-occurrence preventing force on the running object based on the outer peripheral length of the roller increasing to the end side.

However, due to the curvature of the roller surface in the axial direction, when the traveling object is widely contacted with the roller surface to travel,
There was a problem that uneven distortion was generated in the running object. When the contact width of the roller surface and the traveling object is reduced in order to prevent the occurrence of the uneven distortion, the force in the width expanding direction is reduced, which is not practical. In addition, when a pair of rolls are arranged so as to face each other to form a pinch device, there is a problem that there is a large variation in the axial gap between the rolls or in the contact pressure.

Further, since it is necessary to form a roller shape in which the roller surface is curved in the axial direction, it is difficult to form the roller from a material having excellent rigidity such as a metal thick plate.

Means for Solving the Problems The present invention provides a roller having a thin body shape in which a tapered cylindrical body is arranged so as to become thicker toward a roll end side, and a roller shaft is provided so that a part of its outer periphery is flattened. The above-mentioned problems are overcome by the thin roll provided.

That is, the present invention, through the plurality of bearings on the roller shaft,
In a roll in which a roller whose outer peripheral length increases from the central portion toward the end portion is rotatably provided, the roller is formed by arranging a plurality of tapered cylindrical bodies with their small diameter side being the central side of the roll, In addition, an eccentric pipe having a cross section of the same shape having bearings at least at two locations on the large diameter side and the small diameter side of the cylindrical body, the center axis of the roller shaft is straight, and the wall thickness gradually changes between the roller shaft and the bearing. A thin cylindrical roll characterized in that the position of the center of rotation between the bearings on the large diameter side and the small diameter side of the tubular body is fixed based on the eccentric pipe to flatten a part of the outer circumference of the roller in the axial direction. , And a pinch device in which a pair of the rolls are arranged so that flattened portions of the rollers in the axial direction are opposed to each other.

Action By arranging multiple taper-shaped cylinders with the small diameter side facing the roll center, and combining the cylinders so that the outer peripheral length increases from the roll center toward the end, the roll center It is possible to use a body-shaped roller whose outer peripheral length increases from the portion toward the end. Further, the bearings are provided at at least two locations on the large diameter side and the small diameter side of the cylindrical body, and the rotation center position between the bearings on the large diameter side and the small diameter side of the cylindrical body is displaced through the eccentric pipe. The roller can be a roller that is rotatable with respect to the roller shaft while forming a flattened portion in the axial direction on a part of the outer circumference of the roller. As a result, by utilizing the flattened portion of the roller, the traveling object can be made to travel in a flat state or in a state closer to the flat state, and further in a state where the traveling object is in wide contact with the roller surface in the axial direction. It is possible to form a roll in which a force in the width expanding direction acts on the running object based on the outer peripheral difference due to the thin shape of the body, and the function is advantageously exerted based on the large contact width of the roller and the running object, and It is possible to cause the traveling object to travel while suppressing the occurrence of uneven strain in the traveling object due to the flattening traveling.

Example FIG. 1 shows an example of the thin roll of the present invention. Reference numeral 1 is a roll shaft, 3 is an eccentric pipe, 9 and 12 are bearings, and 15 is a roller composed of a cylindrical body 8.

The roller shaft 1 is composed of a single rod having a straight central axis and having the same diameter. The roller 15 has a pair of tapered cylindrical bodies 8 arranged to face each other with the small diameter side facing inward, and has a cylindrical shape whose outer peripheral length gradually increases from the central portion of the roll toward the end portion. There is. The pair of cylindrical bodies 8 are arranged to face each other with a slight gap therebetween in order to prevent the small diameter side end portions of the pair of cylindrical bodies 8 from coming into contact with each other when they rotate with respect to the roller shaft 1 and becoming unrotatable. The cylindrical body 8 is formed by providing a rubber layer 7 on the outer circumference of an iron cylinder 6. Each of the cylinders 8 is arranged at both ends.
It is mounted on the roller shaft 1 via individual self-aligning bearings 9 and 12, so that each cylinder 8 forming the roller 15 can rotate with respect to the roller shaft 1. The bearing 9 on the large diameter side of each tubular body 8 is mounted via the eccentric pipe 3. As shown in FIG. 2, the eccentric pipe 3 is made of a pipe having the same cross-section in which the wall thickness, that is, the outer peripheral thickness gradually changes, and is fixed so as not to rotate with respect to the roller shaft 1. Due to the presence of the eccentric pipe 3, an eccentric state is formed in which the rotation center position of the bearing 9 on the large diameter side of the tubular body 8 is displaced from the rotation center position of the bearing 12 on the small diameter side. In a system in which the position of the center of rotation does not change, the cylindrical roller 15 rotates while sequentially forming a linear line portion 16 which is flattened in the axial direction on a part of the outer periphery thereof.

Reference numeral 2 denotes a ring body for fixing the eccentric pipe 3, which is screwed to the roller shaft 1. 4 is an oil seal. Reference numerals 5 and 13 denote sealing plates fixed to the end of the tubular body 8 and also serve as fixing members for the bearings 9 and 12, respectively. Ten
Is a ring body for fixing the bearing 9 and is screwed to the eccentric pipe 3. Numerals 11 and 14 denote collars, which respectively restrict the space between the eccentric pipe 3 and the bearing 12 or the space between the bearings 12 on the small diameter side of the pair of cylindrical bodies 8.

FIG. 4 shows another embodiment of the thin roll of the present invention. This roll R6 belongs to the convex type, and has a large diameter of the cylindrical body 8 so that the flattened portion of the outer circumference of the thin roller 25 in the axial direction rotates while sequentially forming the convex line 26. This is adjusted through an eccentric pipe so that the deviation of the rotational center position between the bearings 9 and 12 on the side of the small diameter is larger than that of the bearings 9 and 12 in the above embodiment. As shown in FIG. 5, the roll (R6) belonging to the convex type is provided between the flattened portion 26 composed of the convex line on the outer circumference of the roller and the outer peripheral line portion 28 facing the flattened portion 26 having a larger degree of bending. The flattened portion 26 has the portions 27 having a straight outer peripheral line on both sides.

FIG. 6 shows still another embodiment of the thin roll of the present invention. This roll R7 belongs to the concave type, and has a large diameter of the cylindrical body 8 so that the flattened portion of the outer periphery of the thin roller 35 along the axial direction rotates while sequentially forming the concave line 36. It is adjusted through an eccentric pipe so that the deviation of the rotational center position between the bearings 9 and 12 on the side of the small diameter and the side of the small diameter is smaller than that in the embodiment of FIG.

The convex type or concave type roll as described above,
It is advantageously used for 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 roller having a shape in which the outer peripheral length increases from the center of the roll in the width direction toward the end, that is, a thin roller is formed. The respective cylinders are arranged such that the small diameter side thereof is the center side of the roll, and are arranged symmetrically with respect to the center of the roll. Further, when the left half or the right half of the roller is formed of two or more cylinders, the combination of the cylinders is such that the outer peripheral length increases from the center of the roll toward the end in the axial direction. . The number of cylinders forming the roller is arbitrary, but in general, one or two pairs are formed.

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-1
m, especially 20 mm to 5 m, difference in outer peripheral length between large diameter part and small diameter part 0.5
The size is from mm to 1m, especially from 1mm to 30cm.

The characteristic of the roller in the roll of the present invention is that the roller having a thin body shape is not restricted by the constituent material of the cylindrical body and is provided on the roller shaft in a state having a flattened portion in a part of the outer periphery thereof in the axial direction. There is a point that can be provided. 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 is required, it is possible to satisfy the required performance and form a roll including a thin roller. It should be noted that the larger the difference in outer peripheral length between the end portion and the central portion of the roller, the greater the force in the width expanding direction that acts on the traveling object.

Providing a cylindrical roller rotatably with respect to the roller shaft in a state in which a part of the outer periphery 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 tubular body. This is achieved by providing a bearing whose rotation center position does not substantially fluctuate, and setting the rotation center positions between the bearings to be eccentric. As a method to shift the rotation center position between bearings, there is a method that uses an eccentric pipe like the roll R1 (Fig. 1) described above. This method realizes the oil seal at the end of the cylinder with a simple structure. It has the advantage that it can.

In the roll illustrated above, the rotation center position of the bearing provided on the large diameter side of the tubular body is displaced by the interposition of the eccentric pipe, but in the present invention, the rotation center position of the bearing provided on the small diameter side of the tubular body. A method of shifting the position of the roller, for example, a method of interposing the eccentric pipe 3 between the roller shaft 1 and the bearing 12 provided on the small diameter side of the cylindrical body 8 such as the roller R4 in FIG. be able to.

In the above description, the roll R4 is exemplified as a linear type roll in which the flattened portion 16 of a part of the outer periphery of the roller 15 extending in the axial direction forms a straight line, but it may be a convex type roll or a concave type roll. In the present invention, when the convex type and concave type rolls (R6, R7) are used, the gap 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) (D) may be appropriately set depending on the degree of deflection of the roller shaft, etc., but is generally set to 0.1 to 50 mm.

The roller shaft used in the present invention has a straight center axis, and the form thereof is, as is clear from the above, the rotation center position between the bearings on the large diameter side and the small diameter side of the cylindrical body via the eccentric pipe. It is appropriately determined according to the degree of displacement. The length and diameter of the roller shaft may be appropriately determined. Generally, the length is 8 mm to 20 m, especially 12 mm to 10 m, 1
The diameter is from mm to 5m, especially 3mm to 3m.

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 tubular body, bearings are also provided between them in a state where the rotational center position is appropriately deviated and eccentric. The cylindrical body is rotatably provided with respect to the roller shaft to form a thin 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, 3, 4, and 6 described above.

The roll of the present invention has a thin roller shape,
A force in the direction of width expansion acts on the running object, and it can be used for wrinkle straightening and prevention of wrinkling of running objects made of metal thin plates and foils, plastic films, cloths, papers, and the like.

The installation of the roll of the present invention prevents or suppresses wide contact between the roller surface and the traveling object in the axial direction, action of a large force in the width expanding direction on the traveling object due to the contact, and occurrence of uneven permanent strain on the traveling object. From the viewpoint of stable high-speed traveling of the traveling object, the traveling object is flattened on the rollers (lines 16, 26, 2
It is preferable that the driving is carried out via the vehicle (7, 36).

An advantageous method of installing the rolls of the present invention is, for example, as shown in FIG. 7, by utilizing the flattening line portion 16 on the outer circumference of the rollers, the pair of rolls R1 and R1 is provided with a gap or contact in the axial direction between the roller facing surfaces. There is a method of forming the pinch device by facing each other so that the pressure becomes constant. By adopting the method of introducing the traveling object between the rolls as the pinch device, slip of the traveling object on the roller surface can be further reduced.

7 shows a pinch device using straight type rolls R1. For example, straight type and convex type rolls, convex type and concave type rolls, convex type rolls, etc. A pinch device can be formed by an appropriate combination of In FIG. 7, 41 is a gear fixed to the outer periphery of the seal plate 5 for synchronizing the rotations of the rolls R1 and R2, 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 roll of the present invention, since the roll has a shape in which the outer peripheral length increases from the central portion toward the end portion, a force in the width expanding direction can be applied to the traveling object.

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 strain on the traveling object, and it is possible to apply the above-mentioned force to the traveling object with a larger force due to the contact width effect, so that the traveling object is more stable. It can be driven at high speed.

Further, since the roller is rotated with respect to the roller shaft while forming the above-described configuration by the eccentric method in which the rotational center position between the bearings is displaced, the bending process of the roller shaft can be made unnecessary, which is thick. A roll consisting of a roller shaft can be easily manufactured, and it can be rotated with respect to the roller shaft without deformation such as expansion and contraction of the roll, which makes the roller (cylindrical body) a flexible material It can be made of materials with excellent rigidity, heat resistance, etc.
For example, it is possible to obtain a roll having a performance that can be applied to a running object including a metal thick plate or a high temperature plate.

In addition, the flattened portion of the outer circumference of the roller can be used to favorably arrange the rolls to face each other, and the pinch device using the roll composed of rollers whose outer circumference length increases from the central portion toward the end portion can be easily formed. Can be obtained.

[Brief description of drawings]

FIG. 1 is a partial sectional side view of an embodiment of a roll according to the present invention, FIG. 2 is a perspective view of an eccentric pipe used therein, FIG. 3 is a partial sectional side view of another embodiment, and FIG. FIG. 5 is a side view of the embodiment of FIG.
FIG. 6 is a side view of still another embodiment, and FIG. 7 is a side view of an example in which rolls are arranged to face each other to form a pinch device. R1, R4, R6, R7: Fine roll 1: Roller shaft 3: Eccentric pipe 9,12: Bearing 15,25,35: Fine roller 8: Cylindrical body 16,26,27,36: Roller outer circumference Flattened part

Claims (5)

[Claims] 1. A roll comprising a roll shaft rotatably provided with rollers whose outer peripheral length increases from a central portion toward an end portion through a plurality of bearings, the roller comprising a plurality of tapered cylindrical bodies. At least two of the large-diameter side and the small-diameter side of the cylinder are arranged with the small-diameter side being the roll center side.
There is a bearing at the location, and the center axis of the roller shaft is straight, and an eccentric pipe of the same cross-section with a gradually changing wall thickness is placed between the roller shaft and the bearing, and the large diameter side and the small diameter side of the cylinder are A cylindrical thin roll characterized in that the center of rotation between bearings is shifted based on the eccentric pipe to flatten a part of the outer circumference of the roller in the axial direction. 2. The thin 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 thin 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 thin roll according to claim 1, wherein an axially flattened portion of a part of the outer circumference of the roller 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.