JPH0286539A - Roller device - Google Patents

Abstract

PURPOSE:To enable the feed of a strip material without wrinkling and snaking by disposing an elastically deformable surface layer part on a core part having a high rigidity so that its outer circumferential surface takes a cylindrical form. CONSTITUTION:A surface layer part 2 extended in the axial direction at fixed circumferential intervals which can be elastically deformed into a bilaterally symmetrical curved or straight line to the center of this axial direction or the combination thereof is provided on a core part 1 so that its outer circumferential surface takes a cylindrical form. At a result, the adhesion of the surface layer part 2 to the strip material is improved to reduce the slip, also a tensile force is given in the lateral direction of the strip material, and the strip material can be fed without causing wrinkling and snaking.

Description

[Detailed Description of the Invention] [Industrial Application Field] The zero invention is a single or multiple metal foil, such as aluminum foil, which is continuously supplied, and a single or multiple strip of synthetic resin film, paper, etc. The present invention relates to a roller device having rollers.

Metal foil such as aluminum 9 Synthetic resin film.

In a device that continuously feeds a strip of paper or the like and cuts it into predetermined lengths, or in a device that winds it to a predetermined diameter, the strip is fed by a roller device having a single or multiple rollers. The transfer will take place. Also, in aluminum foil roughening treatment equipment, chemical conversion treatment equipment, etc. for aluminum electrolytic capacitors, the aluminum foil as a strip is fed by a roller device having a single or plural rollers. When feeding such a thin strip, it is desired to prevent the strip from being broken or wrinkled, meandering or vibrating.

[Conventional technology]

Conventional rollers for feeding the above-mentioned strips include rigid rollers with high rigidity such as metal rollers and glass fiber-reinforced synthetic resin rollers, and rubber, rubber, etc. on the outer periphery of such rigid rollers. Elastic rollers coated with an elastic material such as sponge rubber are known, and usually have a right cylindrical shape.

Compared to rigid rollers, elastic rollers have advantages such as better adhesion to the strip, fewer scratches on the strip, and less slippage between the elastic roller and the strip.

A drum-shaped roller with a larger diameter at the center of the roller is also known, but compared to a right cylindrical roller, there are problems with machining accuracy, and the center of the belt is larger than the center of the drum-shaped roller. It may be extended by

When feeding a strip, it is necessary to prevent wrinkles, meandering, breakage, etc. from occurring in the strip. Conventionally, a relatively large tension is applied to the strip to prevent meandering. In many cases, the material is fed by a strip, and linear irregularities extending in the axial direction are formed to reduce the contact area with the strip.
A configuration that attempts to reduce the chance of wrinkles occurring in the strip is also known.

[Problem to be solved by the invention]

Although conventional elastic rollers have various advantages as described above, they are inferior to drum-shaped rollers in their ability to prevent wrinkles and meandering.

However, as mentioned above, drum-shaped rollers have manufacturing disadvantages, and furthermore, depending on conditions such as the strength and tension of the strip, the center of the strip may be stretched and plastically deformed. .

An object of the present invention is to provide a roller device that does not cause wrinkles, meandering, etc. even when the strength of the strip is low.

[Means to solve the problem]

The roller device of the present invention is a roller device consisting of a single roller or a combination of a plurality of rollers, and has a core portion l with high rigidity.
and an elastically deformable surface layer 2 provided on the core body 1 so that the outer peripheral surface has a right cylindrical shape. It is configured to be elastically deformed at predetermined intervals in the direction and into a shape of a curve, a straight line, or a combination thereof, which is symmetrical about the center in the axial direction.

[For production]

Since the surface layer 2 has a right cylindrical shape and is made of an elastic body, it has good adhesion to the belt-shaped body, is less likely to cause scratches, and has less slippage, similar to the conventional elastic roller described above. and further includes a surface layer 2 that comes into contact with the strip-shaped body.
When elastic deformation occurs, a symmetrical curve or straight line or a combination thereof appears with respect to the center in the axial direction, and a component force is applied only in the feeding direction to the center of the strip. , the parts extending from the center to the left and right apply force in the direction perpendicular to the feeding direction as well as in the direction perpendicular to the feeding direction, which applies a pulling force in the width direction of the strip, which can prevent wrinkles from forming. . Also, by forming the shape symmetrically, meandering can be prevented.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic perspective view of an embodiment of the present invention, showing a roller device consisting of a single roller, where ■ is a core part, 2 is a surface layer part, 3 is a convex part, and 4 is a convex part. The ridgeline, 5 is a trough, and 6 is a rotating shaft, which is rotated by a motor (not shown) or the like.

The core body part 1 is made of a highly rigid material such as metal or fiber-reinforced synthetic resin, and extends axially on the outer periphery of the core body part 1 at equal or unequal intervals in the circumferential direction. , a song vA that is bilaterally symmetrical about the center in the axial direction
(arc, parabola, etc.).

A convex portion 3 is formed in the shape of a straight line or a combination thereof. A surface layer portion 2 made of an elastic material such as rubber or sponge is provided on the outer periphery of the core portion l on which such a convex portion 3 is formed, and the outer circumferential surface of the surface layer portion 2 is formed into a right cylindrical shape.

Since the outer circumferential surface of the surface layer portion 2 has a right cylindrical shape as described above, its thickness d corresponds to the shape of the convex portion 3 of the core body portion 1, and the tension of the band-shaped body causes this surface layer to When a pressure F is applied to the portion 2, the amount of deformation δ becomes δ=EFd according to the elastic modulus E of the surface layer 2 and its thickness d. That is, as shown in FIG. 2, the thickness d of the surface layer 2 varies in the circumferential direction according to the shape that is the inversion of the shape of the convex portion 3, and the deformation is approximately proportional to the thickness d of the surface layer 2. A quantity δ results.

Further, as shown in FIG. 3, for example, the convex portions 3 extend in the axial direction at predetermined intervals in the circumferential direction, and are symmetrical with respect to the center line C (the center of the roller in the axial direction). The pattern is a curved line (indicates the case of a circular arc). Note that it can also be a straight line that is bilaterally symmetrical with respect to the center line C and inclined with respect to the axial direction. Alternatively, the area near the center line C may be a curved line, and the other areas may be a straight line.

The outer peripheral surface of the surface layer portion 2 has a right cylindrical shape, but as described above, when pressure is applied, it elastically deforms into a shape corresponding to the shape of the convex portion 3. Therefore, when a belt-shaped body rotated in the direction indicated by the arrow is fed, A corresponding to the center line C of the belt-shaped body
At point B, a tension force parallel to the center line C acts, and at point B, which is far from the center line C, a tension force F parallel to the center line C acts.
1 and a tension F2 corresponding to the inclination angle of the ridge line 4 of the convex body 3 with respect to the axial direction. That is, since a tension force is applied to the fed belt-shaped body in the direction of expanding it in the width direction, it is possible to prevent the occurrence of wrinkles.

Also, when the fed strip is deviated to either the left or right side of the roller, the composite value of the tension (F2) acting on the left and right sides of the strip will be different, and as a result, the strip will be returned to the center. . Therefore, meandering can be prevented. Also, unlike drum-shaped rollers, only the central portion of the strip is not stretched, so plastic deformation is not applied.

In addition, since the surface layer 2 made of an elastic body comes into contact with the band-shaped body,
It does not cause scratches on the strip, and therefore has a thinner thickness.
In addition, even a belt-like object with low strength can be stably fed.

FIG. 4 is a sectional view of a main part of another embodiment of the present invention. The case is shown in which a convex part 3a is provided on the core part 1a of the shape, and a surface layer part 2 is provided on the outer periphery of the convex part 3a. By selecting the cross-sectional shape and development pattern of the convex part 3a, the same as in the previous embodiment can be achieved. This will result in a negative effect.

If the portion corresponding to the aforementioned convex portion 3a is made hollow, the amount of deformation of the surface layer portion 2 will be opposite to that in the case where the rigid convex portion 3a is provided, but the deformation pattern of the surface layer portion 2 will be the same as in the example described above. Therefore, it is possible to feed the strip while preventing wrinkles, meandering, etc.

In this case, it is also possible to fill the cavity with an elastic material such as sponge rubber whose elastic modulus is smaller than that of the surface layer 2, and with such a configuration, compared to a cavity. The amount of deformation becomes smaller.

FIG. 5 is a cross-sectional view of a main part of still another embodiment of the present invention, in which a cavity 7 is formed between a valley 5 between core parts 1 having convex parts 3 and a surface layer 2. In this case, the amount of deformation of the surface layer 2 can be increased by the cavity 7.

As described above, the surface layer portion 2 can be made of materials having different elastic modulus, and for example, the elastic modulus of the surface layer portion 2 can be varied according to the development pattern shown in FIG. 3. It is also possible to make only the outer circumferential surface of the surface layer 2 a uniform material with a relatively large elastic modulus, and to vary the elastic modulus in the pattern described above on the inner side.

In the embodiment shown in FIG. 1 described above, the core portion 1 and the convex portion 3 are made of glass fiber reinforced vinyl ester, and the length in the axial direction is 550 mm, and the outer diameter of the convex portion 3 is 110 mm.
, the ridge line 4 of the convex part 3 is a straight line inclined at 6 degrees with respect to the center, and the ridge line 4 of the convex part 3 is connected by an arc with a radius of 300 mm at the center part, and the ridge line 4 of the convex part 3 along the circumferential direction is The number is 12, the width of the convex part 3 is 6 mm, and the depth of the valley part 5 is 5 mm.
The trough 5 is formed by an arc-shaped groove with a radius of 12 mm, and the surface layer 2 provided on the outer periphery of the core body 1 is made of natural rubber with a hardness of 60 degrees, and the diameter of the outer peripheral surface is 11 mm.
6mm, the minimum thickness of the surface layer 2 is 3mm, and the maximum thickness is 9mm.
mm (thickness corresponding to the valley portion 5). And thickness 0
．． 035mm and width 500mm aluminum foil with a tension of 1
0Kg1500mrr, wrapping angle 180” 18m/
It was fed at a speed of min.

Under these conditions, the minimum value of the amount of deformation of the surface layer 2,
That is, at the position corresponding to the convex portion 3, the value is approximately 0, the maximum value,
That is, at the position corresponding to the valley portion 5, it was 0.12 mm.

When the above-mentioned aluminum foil was fed as a strip by the roller of the embodiment of the present invention, the elastic roller of the conventional example, and the drum-shaped roller, in the case of the elastic roller, the following results were obtained.
Wrinkles and meandering occurred in the band. Furthermore, elongation was observed in both the left and right ears of the band. In the case of the drum-shaped roller, the meandering was slightly reduced and the occurrence of wrinkles at the center of the strip was also reduced, but the elongation at the center of the strip was relatively large. On the other hand, in the case of the roller of the embodiment of the present invention, there are fewer wrinkles, the meandering is slightly improved compared to the drum-shaped roller, there is no elongation at the center of the band, and the elongation at both left and right ears is less. It was reduced to about half that of the elastic roller.

Although the present invention produces excellent effects in feeding a strip as in the above-mentioned embodiments even when a single roller is used, a structure in which a plurality of rollers are combined to feed a strip is employed. It is also possible to do this. In that case, the number of convex bodies 3.3a,
Alternatively, the number of elastic deformation patterns corresponding to the elastic deformation patterns may be different for each roller, or may be an odd number, and although the changes in tension applied to the strip by each roller are slight, they are selected so that the changes do not add up. can do.

The core portions 1 and 1a may be made of metal such as aluminum, aluminum alloy, iron, stainless steel, or brass, or fiber-reinforced thermosetting resin. In this case, as reinforcing fibers, glass, asbestos, carbon, various organic fibers, etc. can be used, and as synthetic resins, epoxy resins, unsaturated polyester resins, phthalate resins, phenol resins, etc. can be used.

As the surface layer portion 2, natural rubber, styrene-butadiene rubber, neoprene rubber, chloroprene rubber, acrylonitrile rubber, nitrile rubber, urethane rubber, fluorine rubber, silicone rubber, etc., and their sponge-like rubbers can be used.

Then, for example, unvulcanized rubber is wrapped around the core part l to form a roller shape, which is directly vulcanized using pressurized and heated steam, and the outer circumferential surface is polished into a right cylindrical shape. Section 2 can be configured.

〔Effect of the invention〕

As explained above, the present invention is composed of a single roller or a plurality of rollers, and the roller includes a core portion 1 having high rigidity and a surface layer portion 2 whose outer peripheral surface has a right cylindrical shape. The surface layer 2 extends in the axial direction at predetermined intervals in the circumferential direction and can be elastically deformed into a shape of a curve, a straight line, or a combination thereof, which is symmetrical about the center in the axial direction. Because of the elastically deformed shape of the surface layer 2, it is possible to feed the strip without wrinkles or meandering. Furthermore, since the surface layer 2 that comes into contact with the strip is an elastic body, there is no risk of damaging the strip, and therefore even a strip with low strength and extremely thin thickness can be fed stably. It becomes possible.

In addition, when the elastic modulus of the surface layer 2 is made different at predetermined intervals in the circumferential direction, and when other members are used, the convex portion 3a
In this case, since the core body portion 1a can be formed into a cylindrical shape, the manufacture of the core body portion 1a becomes easy.

Further, when the convex portion 3 is formed on the core portion 1, there is an advantage that a desired elastically deformed shape can be obtained even if the surface layer portion 2 is formed of an elastic body made of a uniform material.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of an embodiment of the present invention, Fig. 2 is an explanatory diagram of a main part cross section and amount of deformation, Fig. 3 is a developed explanatory diagram of an embodiment of the invention, and Fig. 4 is an explanatory diagram of an embodiment of the present invention. FIG. 5 is a sectional view of a main part of still another embodiment of the present invention. 1, la is the core part, 2 is the surface layer part, 3, 3a is the convex part, 4
is a ridgeline, 5 is a valley, and 6 is a rotation axis. Patent applicant Rollchik Co., Ltd. Patent attorney
Akio Aitani, Patent Attorney Hiroshi Watanabe - Diagram 2 of cross-section of main parts and explanatory diagram of amount of deformation

Claims (3)

[Claims] (1) In a roller device having a single or plural rollers for feeding a strip, the core portion (1) has a large rigidity, and the outer peripheral surface of the core portion (1) has a right cylindrical shape. a surface layer that extends in the axial direction at predetermined intervals in the circumferential direction and can be elastically deformed into a shape of a curve, a straight line, or a combination thereof that is symmetrical about the center in the axial direction; (2) A roller device comprising: (2) A first characterized in that the thickness or elastic modulus of the surface layer portion (2) is varied at predetermined intervals in the circumferential direction.
Roller device as described in section. (3) In a roller device having a single or multiple rollers for feeding a strip, the roller device has high rigidity, is spaced at predetermined intervals in the circumferential direction, and is symmetrical with respect to the center in the axial direction. A core portion (1) having a convex portion (3) in the shape of a curve, a straight line, or a combination thereof.
and a surface layer part (2) which is provided on the core body part (1) so that the outer peripheral surface thereof has a right cylindrical shape, and which can be elastically deformed into a shape corresponding to the shape of the convex part (3). A roller device characterized by: