JP3912470B2 - Manufacturing method of metal strip with protrusions - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a metal strip with protrusions, and particularly relates to a method for manufacturing a metal strip with protrusions for simultaneously manufacturing a plurality of metal strips with protrusions.
[0002]
[Prior art]
Heat transfer tubes such as air conditioners or refrigerators are usually manufactured by welding. In general, a metal strip such as a copper plate or an aluminum plate on which many protrusions for heat exchange are formed is used as a raw material. The
[0003]
As a method of manufacturing this type of metal strip with protrusions, for example, as shown in Japanese Patent Application Laid-Open No. 4-319191, the metal strip is pressed by a protrusion processing roller having protrusions with a predetermined uneven shape on the surface, Therefore, a method for forming a protrusion on a metal strip is known.
[0004]
That is, in the publication, a pair of processing rollers provided with protrusion processing portions and non-processing portions having a predetermined width alternately in the axial direction are arranged so that the protrusion processing portion and the non-processing portion face each other in relation to the opposing partner. By arranging the metal strips so as to face each other and forming the processing projection units by the projection processing portions alternately on the front and back in the width direction of the metal strips, and subsequently cutting them from the boundaries of the processing projection units Discloses a method of simultaneously manufacturing a plurality of metal strips with protrusions.
[0005]
This method is efficient because the work can be performed continuously, and a corresponding number of protruding metal strips can be manufactured at the same time by lengthening the processing roller. This is an advantageous method for manufacturing.
[0006]
[Problems to be solved by the invention]
However, according to the conventional manufacturing method, the boundary portion of the processing projection unit is cut by a slitter disposed at a distance in front of the processing roller, and thus the boundary portion is likely to be displaced. The quality may be deteriorated by cutting a portion shifted from the position.
[0007]
Therefore, the objective of this invention is providing the manufacturing method of the metal strip with a protrusion which can cut | disconnect a metal strip accurately from the boundary part of a process protrusion unit.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a protrusion processing portion having a predetermined width and a non-processing portion having a predetermined width alternately in the axial direction, and each of the protrusion processing portion on the mating side and the non-processing portion of itself. The metal strips are passed through a pair of processing rollers arranged to face each other so as to face each other, and the projection processing portions are formed on the front and back in the width direction of the metal strip by pressure by the projection processing portion and the non-processing portion. In the manufacturing method of metal protrusions with protrusions alternately forming processing protrusion units based on the above, by setting the outer diameter of the non-working part in each of the pair of processing rollers to be larger than the outer diameter of the protrusion processing part A method for producing a metal strip with protrusions, wherein the tips of the non-processed portions are adjacent to each other between a pair of processing rollers, and the metal strip is cut by a cutting action by the edge portions of the adjacent tips. It is intended to provide.
[0009]
As a constituent material of the metal strip, for example, copper, aluminum, or an alloy thereof is used. When a metal strip cut by forming a processed projection unit is rounded along the longitudinal direction to form a tubular body, for example, a spiral groove and a mountain are adjacent to the inner surface of the tubular body. It has an uneven shape on the surface that can be formed in large numbers.
[0010]
The number of protrusion processing portions and non-processing portions of the processing roller is determined in relation to the size of the equipment, and therefore there is no particular limitation on the upper limit. At the lower limit, at least one protrusion processing portion and non-processing portion are formed on each processing roller.
[0011]
The processing roller tends to bend as the number of protrusion processing portions and non-processing portions increases, but it is preferable to install a support roller in order to prevent this. The deflection of the roller makes the thickness of the metal strip in the width direction non-uniform, and is therefore a quality item that must be avoided first in this type of manufacturing method.
[0012]
Specifically, a configuration in which a support roller is installed at a position opposite to a portion through which the metal strip of the non-processed portion passes and the non-processed portion is supported by the support roller is effective. This configuration makes the best use of the non-machined parts, and thus increases the number of projecting parts and non-machined parts without increasing the diameter of the machining roller and thereby increasing the size of the equipment. It is possible to increase the number of attached metal strips.
[0013]
When each of the processing rollers has a plurality of non-working parts, it is conceivable to install a support roller for each non-working part, but this is not preferable because the configuration becomes complicated. In the present invention in which the outer diameter of the non-processed portion is set to be larger than that of the projection processed portion, it is possible to support a plurality of non-processed portions all at once by a single support roller, thereby simplifying the overall configuration. Can be
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a method for producing a metal strip with protrusions according to the present invention will be described.
In FIGS. 1 and 2, reference numerals 1a and 1b denote a pair of processing rollers which are arranged to face each other in the vertical direction. On one processing roller 1a, protrusion processing portions 2a having irregularities on the surface and non-processing portions 3a having an outer diameter larger than this are alternately formed in the axial direction.
[0015]
On the processing roller 1b side, similar outer diameter-related protrusion processing portions 2b and non-processing portions 3b are alternately formed. These processing rollers 1a and 1b are respectively connected to the corresponding protrusion processing portions 2b and 2a. The non-processed parts 3a and 3b are opposed to each other, and further, the tips of the non-processed parts 3a and 3b are combined to be adjacent to each other.
[0016]
Reference numerals 4a and 4b denote support rollers disposed in contact with the non-processed portions 2a and 2b at positions opposite to the portion through which the metal strip 5 passes, and prevent the processing rollers 1a and 1b from being bent. In the above configuration, when the metal strip 5 is passed between the processing rollers 1a and 1b, the metal strip 5 is projected by pressure applied by the projection processing portion 2a and the non-processing portion 3b, and the projection processing portion 2b and the non-processing portion 3a. A processing projection unit based on the processing portions 2a and 2b is formed.
[0017]
At this time, the metal strip 5 is formed with the processed projection units as described above, and at the same time, the edge portions 6 and 7, 8 and 9, and 10 at the tips of the non-processed portions 3a and 3b adjacent to each other. 11 is cut by the cutting action by the combination of 11 and discharged as protruding metal strips 12, 13, 14 and 15.
[0018]
Of the ejected protruding metal strips 12 to 15, 12 and 14 have a processing projection unit 16 formed on the front side thereof, while 13 and 15 have a processing projection unit 16 formed on the back side thereof. Thus, the metal strips with protrusions 12 to 15 are continuously manufactured.
[0019]
In the metal strips with protrusions 12 to 15 obtained by this manufacturing mode, the formation and cutting of the processed protrusion unit 16 are performed almost simultaneously, so that the cutting position is not shifted. In addition, cutting can be performed with high accuracy.
[0020]
Further, since the portions of the non-processed portions 3a and 3b are supported by the support rollers 4a and 4b, the processing rollers 1a and 1b do not bend when the metal strip 5 passes through. The thickness of ~ 15 will be uniform.
[0021]
As an effect of making the outer diameters of the non-processed portions 3a and 3b larger than the outer diameters of the projection processed portions 2a and 2b, the non-processed portions 3a and 3b are collectively supported by one support roller 4a or 4b. Further, there is no risk of damaging the surface of the protrusion processing portions 2a, 2b or the support rollers 4a, 4b because the support rollers 4a, 4b are not likely to come into contact with the protrusion processing portions 2a, 2b. , A stable equipment structure can be obtained.
[0022]
【The invention's effect】
As described above, according to the method for manufacturing a metal strip with protrusions according to the present invention, the protrusion processing portions and the non-processing portions are alternately arranged in the axial direction, In the pair of processing rollers arranged to face each other, the outer diameter of the non-processed portion in each of the processing rollers is set larger than the outer diameter of the projection processing portion, and the non-processed portion of the non-processed portion is set between the processing rollers. Since the metal strips are cut by the cutting action by the edge portions of the tips that are adjacent to each other, the metal strip can be surely cut from the boundary portion of the processing projection unit, and therefore, with a precise projection. Metal strips can be produced.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a method for producing a metal strip with protrusions according to the present invention.
FIG. 2 is a perspective view of the embodiment of FIG.
[Explanation of symbols]
1a, 1b Processing roller 2a, 2b Protrusion processing portion 3a, 3b Non-processing portion 4a, 4b Support roller 5 Metal strip 6-11 Edge portion 12-15 Metal strip with projection 16 Processing projection unit

Claims (1)

A pair of protrusion processing portions having a predetermined width and non-processing portions having a predetermined width are alternately arranged in the axial direction, and are arranged so as to face each other so that the protrusion processing portion on the other side faces the non-processing portion of the other side. With protrusions that allow the metal strips to pass through the processing roller and alternately form processing protrusion units based on the protrusion processing portions on the front and back in the width direction of the metal strips by pressure applied by the protrusion processing portions and the non-processing portions. In the manufacturing method of the metal strip,
By setting the outer diameter of each of the non-processed portions of the pair of processing rollers to be larger than the outer diameter of the protrusion processing portion, the tips of the non-processed portions are adjacent to each other between the pair of processing rollers,
A method of manufacturing a metal strip with protrusions, wherein the metal strip is cut by a cutting action by the edge portion of the tip that is adjacent to the tip ,
The non-working part is supported by a support roller that collectively supports the non-working part of the processing roller at a position opposite to the part through which the metal strip passes. Method.

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