JP2002086309A - Metal wire manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal wire causing no deflection of a working roller, uniform in thickness in the width direction and causing no disagreement of width of the metal wire with width of a projecting part on a device for manufacturing the metal wire having plural projections on a surface by using a pair of the opposed working rollers. SOLUTION: At least two pairs of independent support rollers are provided at a position to clamp the working rollers, and width and a position of each of the support rollers are selected so that the support rollers do not come into contact with edges of the large diameter parts of the working rollers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal strip manufacturing apparatus, and more particularly, to a metal strip manufacturing apparatus comprising a pair of processing rollers having a large diameter portion and a small diameter portion and having axes parallel to each other. The present invention relates to a metal strip manufacturing apparatus that obtains a metal strip by cutting a metal plate by meshing.

[0002]

2. Description of the Related Art A method of bending a metal strip in the width direction and welding and stitching the edges of the metal strip together to form a cylinder is a useful method for manufacturing a heat exchanger tube for heat exchange. Various methods for efficiently manufacturing metal strips have been considered, one of which is a pair of rollers in which a large diameter portion and a small diameter portion are alternately provided with a predetermined width in an axial direction, and the shafts are parallel to each other. So that
Then, the large diameter portion of one roller is arranged so as to face the small diameter portion of the other roller, and a metal plate is passed between a pair of rollers. This is a method of obtaining a metal strip by cutting.

A heat transfer tube used for heat exchange in a refrigerator, an air conditioner, or the like has a large number of projections provided on an outer surface or an inner surface to promote heat conduction. A metal strip for manufacturing such a heat transfer tube has a projection on any surface. As an apparatus for manufacturing a metal strip having a projection, Japanese Patent Application Laid-Open No.
19019. This device has a pair of rollers in which a processed portion for forming a projection on the surface of a metal strip and a non-processed portion on which a projection is not formed are alternately provided with a predetermined width in the axial direction as a pair. It is arranged so that it is parallel, and the processed part of one roller faces the non-processed part of the other roller.A metal plate is passed between a pair of rollers, and a part having projections on the front and back of the metal plate The metal plate is alternately formed with a predetermined width, and then the metal plate is cut at the boundary of each part to obtain a metal strip.

FIG. 3 shows a conventional apparatus for manufacturing a metal strip with projections, disclosed in Japanese Patent Application Laid-Open No. Hei 4-319019. The processing roller 1a has, in the axial direction, a projection processed portion 2a for performing a projection process on a metal strip and a non-processed portion 3a in which no projection is formed. The processing roller 1b also has the projection processing parts 2b and the non-processing parts 3b alternately in the axial direction. Processing rollers 1a, 1
The axes b are arranged parallel to each other. Projection processing part 2a
And the non-processed portion 3b, and the protrusion processed portion 2b and the non-processed portion 3a face each other.
b, the non-processed portion 3b, the protrusion processed portion 2 of the processing roller 1a
An appropriate gap is provided so that the metal plate 7 is pressed against a.

When a metal plate 7 is passed between the processing rollers 1a and 1b, the metal plate 7 is pressed against the projection processing portion 2b of the processing roller 1b by the non-processing portion 3a of the processing roller 1a. Projection is performed on the surface facing the processing roller 1b, and the non-processing portion 3b of the processing roller 1b is pressed against the projection processing portion 2a of the processing roller 1a to form a projection on the surface facing the processing roller 1a. The metal plate has projections formed on the front and back sides alternately in the axial direction of the processing roller. When the metal plate 7 is cut along the advancing direction in accordance with the width of the projection formed on each surface, metal strips 7a and 7b having projections on opposite surfaces are obtained.

A disadvantage of this device is that the metal plate having the projections formed on the front and back sides is alternately cut afterward, and thus the metal plate is shifted in the width direction between the projection processing and the cutting process. This means that the boundary between the edge of the metal strip and the projection forming portion shifts.

FIG. 4 and FIG. 5 show an apparatus for manufacturing a metal strip with protrusions proposed to solve this drawback (Japanese Patent Application No. 11-145120). This device comprises a pair of processing rollers 1a and 1b, like the device of FIG.

The processing roller 1a has, in the axial direction, projections 2a having projections and depressions for forming projections on metal strips, and non-processing parts 3a having a smooth surface, which are alternately arranged in the axial direction. It has a larger diameter than the processing part 2a. Processing roller 1b
Also, the protruded portions 2b and the non-processed portions 3b are alternately arranged in the axial direction, and the non-processed portions 3b have a larger diameter than the protruded portions 2b. Projection processing part 2a, non-processing part 3b, projection processing part 2b
And the non-processed portion 3a are opposed to each other, and between them, the edge 4a of the processed portion 3a of the process roller 1a and the edge 4b of the non-processed portion 3b of the process roller 1b are engaged with each other.
There is an appropriate gap. The apparatus shown in FIG.
a has a larger diameter than the protruded portion 2a, and the non-processed portion 3
b has a diameter larger than that of the protruded portion 2b.
Device.

When the metal plate 7 is passed between the processing rollers 1a and 1b, the metal plate 7 is brought into contact with the edge 4a of the non-processing portion 3a and the non-processing portion 3a.
b is cut by engagement with the edge 4b. When the metal plate 7 passes between the processing rollers 1a and 1b, the metal plate 7 is pressed by the non-processing part 3a of the processing roller 1a to the unevenness of the projection processing part 2b of the processing roller 1b, and the processing roller 1b
The surface facing the processing roller 1b is pressed by the non-processing portion 3b of the processing roller 1b against the unevenness of the projection processing portion 2a of the processing roller 1a, and the surface facing the processing roller 1a is processed at that portion. The metal plate 7 has projections formed on the front and back sides alternately in the axial direction of the processing roller. In this way, metal strips 7a and 7b having protrusions on opposite surfaces are obtained.

In this apparatus, the metal plate 7 is provided with the processing roller 1a.
When passing between 1b and 1b, it is cut along the boundary of those parts while forming protrusions on the front and back,
The boundary between the edge of the obtained metal strip and the boundary between the projection forming portion does not shift.

In these apparatuses, when the processing roller is lengthened to increase the processing efficiency, the roller is bent, and the thickness of the manufactured metal strip becomes uneven in the width direction. If the roller is made thicker to prevent the deflection of the roller, not only the device becomes larger, but also the surface processing time of the roller becomes longer, which increases the manufacturing cost. In order to prevent the bending of the roller when the processing roller is lengthened, it is conceivable to provide another support roller behind the processing roller (outside of the facing roller).

FIG. 6 shows an apparatus for manufacturing a metal strip with protrusions proposed to solve this drawback (patent application filed on February 25, 2000). The apparatus comprises a pair of working rollers 1a and 1b and a pair of support rollers 6a and 6b. The axes of the processing rollers 1a and 1b, the support rollers 6a and 6b
Both are arranged in parallel with each other. Processing roller 1a
And 1b are the same as in the apparatus of FIG. The support roller 6a is in contact with the non-processed portion 3a of the processing roller 1a, and the support roller 6b is in contact with the non-processed portion 3b of the process roller 1b. Direction).

[0013]

However, in the apparatus shown in FIG. 6, the edges (4a, 4b) of the non-processed portions of the process rollers are damaged because the process rollers come into contact with the support rollers, and the edges of the non-processed portions are damaged. The width of the metal strip cut in the step becomes unstable, and the width does not match the width of the portion processed in the processed portion.

An object of the present invention is to provide an apparatus for manufacturing a metal strip using a pair of opposing processing rollers, in which the processing roller is prevented from bending even if the processing roller is not thickened, and a metal strip having a uniform thickness in the width direction is obtained. An object of the present invention is to provide an obtained metal strip manufacturing apparatus.

Another object of the present invention is to provide an apparatus for manufacturing a metal strip having a plurality of projections on its surface by using a pair of opposed processing rollers, wherein the bending of the processing roller is prevented without making the processing roller thicker, and cutting is performed. An object of the present invention is to provide a projection-processed metal strip manufacturing apparatus that does not cause a mismatch between the width of the processed metal strip and the width of the protrusion-processed portion.

[0016]

In order to achieve this object,
In the present invention, there is provided a pair of processing rollers whose axes are parallel to each other, and each of the pair of processing rollers alternates a first portion having a large diameter and a second portion having a small diameter with a predetermined width in the axial direction. And a pair of working rollers such that one of the first portions faces the other second portion, and the edge of one first portion meshes with the edge of the other first portion. Are arranged at a predetermined interval, a metal plate is passed between a pair of processing rollers, and the metal plate is cut at a predetermined width by engagement of edges of the first portions of the pair of processing rollers to obtain a metal strip. In the strip manufacturing apparatus, at least one pair of support rollers is provided at a position sandwiching the pair of processing rollers, and each of the support rollers can rotate freely with respect to each other, and their width is the first portion of the processing roller. The width of the first part of the processing roller The periphery, or is placed in contact only with the portion except for the edges, or width smaller than the width of the second portion of the processing rollers, characterized in that it is arranged so as to be in contact with the second portion.

According to the present invention, there is provided a pair of processing rollers whose axes are parallel to each other, and each of the pair of processing rollers has a first portion having a large-diameter smooth surface and a small-diameter projection. The second portion having the unevenness is alternately formed at a predetermined width in the axial direction, the first portion of one of the pair of processing rollers faces the second portion of the other processing roller, and Are arranged at predetermined intervals so that the edge of one of the first portions meshes with the edge of the other first portion;
In a metal strip manufacturing apparatus for obtaining a metal strip by passing a metal plate between a pair of processing rollers and cutting the metal plate at a predetermined width by engaging the edges of the first portions of the pair of processing rollers, It is particularly useful if the width of the first roller is smaller than the width of the first portion of the processing roller, and the supporting roller is disposed so as to be in contact with only the portion of the outer periphery of the first portion of the processing roller except the edge.

In the present invention, for each of the first part, the second part, and the support roller of the working roller, the width means the length of the generatrix of the roller in the axial direction. In the present invention, the width of the first portion and the second portion of the processing roller may be equal or different. In order to manufacture only metal strips having the same width, the first portion and the second portion have the same width.

In the present invention, the support roller preferably has a smooth surface. The support roller preferably has an axis parallel to the processing roller. Preferably, one support roller of each pair of support rollers has an equal diameter.

[0020]

1 and 2 show an apparatus for manufacturing a metal strip according to the present invention. The metal strip manufacturing apparatus includes a pair of processing rollers 1a and 1b, and a pair of support rollers 6a and 6b and 6c.
And 6d. The axes of the processing rollers 1a and 1b, and the supporting rollers 6a, 6b, 6c, and 6d are all arranged in parallel with each other.

The processing roller 1a has, in the axial direction, a projection processing section 2a having projections and depressions for forming a projection on a metal strip and a non-processing section 3a in which no projection is formed.
“a” has a larger diameter than the protruded portion 2a. The processing roller 1b also has the protrusion processed parts 2b and the non-processed parts 3b alternately in the axial direction, and the non-processed part 3b has a larger diameter than the protrusion processed part 2b. The projection processed portion 2a and the non-processed portion 3b face each other, and the projection processed portion 2b and the non-processed portion 3a face each other.
Between them, the edge 4a of the processing portion 3a of the processing roller 1a
An appropriate gap is provided so as to mesh with the edge 4b of the non-processed portion 3b of the process roller 1b.

Support rollers 6a, 6b, 6c, 6d
Are equal in diameter. The support roller 6a is rotatably supported by a shaft 8a, the support roller 6c is supported by a shaft 8c, the support roller 6b is supported by a shaft 8b, and the support roller 6d is supported by a shaft 8d. The support rollers 6a, 6b, 6c, and 6d can rotate independently of each other. Support roller 6a and 6
c is the non-processed portion 3a of the processing roller 1a,
6b and 6d are in contact with the non-working portion 3b of the working roller 1b, respectively, thereby preventing the working roller 1a and the working roller 1b from moving outward (in a direction away from each other).

When the metal plate 7 is passed between the processing rollers 1a and 1b, the metal plate 7 is brought into contact with the edge 4a of the non-processing portion 3a and the non-processing portion 3a.
b is cut by engagement with the edge 4b. When the metal plate 7 passes between the processing rollers 1a and 1b, the metal plate 7 is pressed by the non-processing part 3a of the processing roller 1a to the unevenness of the projection processing part 2b of the processing roller 1b, and the processing roller 1b
The surface facing the processing roller 1b is pressed by the non-processing portion 3b of the processing roller 1b against the unevenness of the projection processing portion 2a of the processing roller 1a, and the surface facing the processing roller 1a is processed at that portion. The metal plate 7 has projections formed on the front and back sides alternately in the axial direction of the processing roller. In this way, metal strips 7a and 7b having protrusions on opposite surfaces are obtained.

The support roller 6a is in contact with the non-processed portion 3a of the processing roller 1a, and the support roller 6b is in contact with the non-processed portion 3b of the process roller 1b, but the support roller 6a is in contact with the edge 4a of the non-processed portion 3a. Since there is no contact and the support roller 6b does not contact the edge 4b of the non-processed portion 3b, even if there is pressing between the support roller 6a and the non-processed portion 3a and between the support roller 6b and the non-processed portion 3b, each process is performed. The edges 4a and 4b of the unprocessed portion of the roller are not damaged.

[0025]

According to the metal strip manufacturing apparatus of the present invention, in an apparatus for manufacturing a metal strip using a pair of opposed processing rollers, at least one pair of metal strips is provided at a position sandwiching the processing roller.
By providing the independent support rollers, the bending of the processing roller is prevented without increasing the thickness of the processing roller, and a metal strip having a uniform thickness in the width direction (axial direction of the processing roller) can be obtained.

Further, according to the present invention, in an apparatus for manufacturing a metal strip having a plurality of projections on its surface using a pair of opposed processing rollers, the bending of the processing roller is prevented, and the width and the projection of the cut metal strip are reduced. There is no mismatch with the width of the processed part. This is because at least one pair of support rollers is provided at a position sandwiching the pair of processing rollers, and the width and position of these support rollers do not touch the edge of the first portion having the large diameter of the processing roller. It depends on being selected.

[Brief description of the drawings]

FIG. 1 is an elevation view of a metal strip manufacturing apparatus according to the present invention.

FIG. 2 is a perspective view of a metal strip manufacturing apparatus, a metal plate, and a metal strip according to the present invention.

FIG. 3 is an elevation view of a conventional metal strip manufacturing apparatus as viewed from a metal strip traveling direction.

FIG. 4 is an elevation view of a conventional metal strip manufacturing apparatus as viewed from a metal strip traveling direction.

FIG. 5 is an explanatory view of a conventional metal strip manufacturing apparatus.

FIG. 6 is an elevational view of a metal strip manufacturing apparatus proposed by the same applicant as viewed from the metal strip traveling direction.

[Description of Signs] 1a, 1b Processing rollers 2a, 2b Projection processing parts 3a, 3b Non-processing parts 4a, 4b Edges (of non-processing parts) 6a, 6b Supporting rollers 6c, 6d Supporting rollers 7 Metal plates 7a, 7b Metal strips 8a, 8b axis 8c, 8d axis

Claims (7)

[Claims] 1. A processing roller having a pair of processing rollers whose axes are parallel to each other, wherein each of the processing rollers alternates a first portion having a large diameter and a second portion having a small diameter with a predetermined width in the axial direction. Wherein the pair of processing rollers are such that one of the first portions faces the other of the second portions, and an edge of one of the first portions is the other of the first portions. The metal plate, which is arranged at a predetermined interval so as to mesh with the edge of the pair of processing rollers and is passed between the pair of processing rollers, has a predetermined width by engaging the edge of the first portion of the pair of processing rollers. In a metal strip manufacturing apparatus for cutting and obtaining a metal strip, at least two pairs of support rollers are provided at positions sandwiching the pair of processing rollers, and these support rollers can rotate freely with each other. The roller has a width in front of the processing roller Smaller than the width of the first portion, the outer periphery of the first portion of the processing roller is disposed so as to contact only the portion except the edge, or their width is greater than the width of the second portion A metal strip manufacturing apparatus, which is small and is arranged so as to be in contact with only the second portion. 2. The support roller has a width smaller than a width of the first portion of the processing roller, and is in contact with only a portion except an edge of an outer periphery of the first portion of the processing roller. The metal strip manufacturing apparatus of claim 1, wherein the apparatus is arranged. 3. The first part of the pair of processing rollers has a smooth surface, and the second part has irregularities for performing projection processing on the metal plate. The predetermined interval of the processing roller, the metal plate is pressed against the second portion between the first portion of one processing roller and the second portion of the other processing roller, the metal plate 3. The size is selected so that a projection is formed on the surface.
Metal strip manufacturing equipment. 4. The metal strip manufacturing apparatus according to claim 1, wherein the support roller has a smooth surface. 5. The metal strip manufacturing apparatus according to claim 1, wherein the support roller has an axis parallel to the processing roller. 6. The metal strip manufacturing apparatus according to claim 5, wherein said support rollers have a common axis, wherein one of the support rollers of each pair has a diameter equal to each other. 7. The first part of the pair of processing rollers has irregularities for performing projection processing on the metal plate, the second part has a smooth surface, The predetermined interval of the processing roller, the metal plate is pressed against the first portion between the first portion of one processing roller and the second portion of the other processing roller, the metal plate The support rollers have a width smaller than the width of the second portion of the processing roller, and the support rollers have only a width corresponding to the second portion of the processing roller. The metal strip manufacturing apparatus according to claim 1, wherein the metal strip manufacturing apparatus is arranged so as to be in contact with the metal strip.