JP2000051986A - Manufacture of metallic bar having projection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a metallic bar having a plurality of projections which is free from any deflection of a work roller and uniform in thickness in the direction of the width of a product. SOLUTION: In a roller device in which a metallic bar 4 is passed between work rollers 1a, 1b on which projection working parts 2a, 2b and non-working parts 3a, 3b are alternately formed in the axial direction, and projections corresponding to the projection working parts are formed on the face and back sides of the metallic bar 4 in the width direction, support rollers 5a, 5b comprising small width rollers 5a', 5b' combined therewith are arranged on a side opposite to a part of the work rollers 1a, 1b where the metallic bar 4 is passed, and since their outer circumferential parts 6a, 6b are brought into contact with the non-working parts 3a, 3b of the work rollers, the work rollers 1a, 1b are supported by the support rollers 5a', 5b', and the work rollers are free from any deflection, and the thickness of the metallic bar 4 is not non-uniform in the width direction even when the work rolls 1a, 1b are increased in length, and the number of bars is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a metal strip with projections, and more particularly to a method of manufacturing a metal strip with projections capable of simultaneously manufacturing a plurality of metal strips with projections.

[0002]

2. Description of the Related Art Heat transfer tubes of an air conditioner or a refrigerator are usually manufactured by welding, and generally include a metal strip such as a copper plate or an aluminum plate having a large number of projections for heat exchange. Is used as a raw material.

As a conventional manufacturing method for obtaining the metal strip with projections, for example, a manufacturing method disclosed in Japanese Patent Application Laid-Open No. 1-138017 is known. That is, here, a wide metal strip is supplied to the roller for forming a protrusion, and a large number of protrusions are formed over the entire width of the metal strip by passing through the roller. A method of manufacturing a metal strip with protrusions for obtaining a raw material at one time is disclosed.

Another conventional manufacturing method for obtaining a plurality of metal strips with projections at once is disclosed in, for example, Japanese Patent Application Laid-Open No.
No. 319019. To this end, a pair of processing rollers provided with a projection processed portion and a non-processed portion having a predetermined width alternately in the axial direction are arranged so as to face each other such that the protrusion processed portion and the non-processed portion face each other in relation to an opposing partner. By passing a metal strip through this, a processing projection unit by the projection processing unit is formed alternately on the front and back in the width direction of the metal strip, and then a plurality of the processing projection units are cut from the boundary of the processing projection unit. A method for simultaneously producing a metal strip with projections is shown.

[0005]

However, according to these conventional manufacturing methods, in any case, when the working roller is to be elongated to increase the working efficiency, the product is bent due to the bending of the roller. There is a problem that the thickness in the width direction becomes uneven.

On the other hand, if the diameter of the roller is increased so as not to bend, the surface processing time of the roller increases, and
The equipment becomes larger and heavier. Further, in the former method, in order to prevent the bending of the processing roller, it has been attempted to arrange the roller behind the processing roller to back up the processing roller, but there is a problem that the protrusion processing portion is damaged. Was not valid for.

Therefore, an object of the present invention is to prevent the working roller from bending when manufacturing a plurality of metal strips at the same time, not to lengthen the surface processing time of the roller, to suppress increase in size and weight, and to reduce product width. An object of the present invention is to provide a method for manufacturing a metal strip with protrusions, which does not have a problem of uneven thickness in a direction.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention has a protruded portion having a predetermined width and a non-processed portion having a predetermined width alternately in the axial direction. The metal strip is passed through a pair of processing rollers arranged so as to oppose the projection processing section and the non-processing section of the projection, and a processing projection unit by the projection processing section is a table in a width direction of the metal strip. And a method of manufacturing a metal strip with projections formed alternately on the back side, wherein a support roller is disposed on the opposite side of a portion of the processing roller through which the metal strip passes, and an outer peripheral portion of the support roller is brought into contact with the non-processed portion. And a method of manufacturing a metal strip with projections, wherein the processing roller is supported by the support roller.

As the constituent material of the metal strip, for example, copper,
Aluminum or their alloys are used. It is preferable that the support roller has a concave portion formed at a position facing the processing roller so as to avoid contact with the projection processing portion of the processing roller. Can also be prevented.

The support roller may be constituted by a combination of a plurality of small-width rollers, or may be constituted by a single roller. In the former case, the concave portion is formed by a space portion formed between the narrow rollers by arranging the narrow rollers at intervals, while in the latter case, the concave portion is formed by machining in the circumferential direction of the rollers. It is constituted by a groove formed.

When the width of the outer peripheral portion of the small-width roller is set smaller than the width of the non-processed portion of the processing roller, there is no possibility that the outer peripheral portion of the small-width roller and the projection processed portion come into contact with each other at their boundary. Therefore, the configuration is preferable in terms of protection of the protrusion processed portion.

It is preferable to install a slitter in a production line where a processing roller is installed, and to continuously cut the processed metal strip from a boundary portion of a processing projection unit in order to increase the efficiency of the operation. .

The thickness and shape of the metal strip provided with the protrusion, the tension of the metal strip between the processing roller and the product winder, and the like are detected, and the amount of crushing between the processing rollers or the support roller on the processing roller is detected. It is configured so that the supporting force can be finely adjusted, whereby the size and shape can be automatically adjusted.

[0014] The number of the projecting processed portions and the non-processed portions of the processing roller is determined in relation to the size of the equipment, and therefore there is no particular upper limit. At the lower limit, at least one is formed on each of the processing rollers.

[0015]

Next, an embodiment of a method for manufacturing a metal strip with protrusions according to the present invention will be described. 1 and 2, reference numerals 1a and 1b denote processing rollers arranged opposite to each other vertically, 2a and 2b and 3a and 3b denote processing rollers 1
a and 1b show a processed part having a predetermined width and a non-processed part having a predetermined width alternately formed in the respective axial directions, and among these, the processed part 2a, the non-processed part 3b and the processed part The 2b and the non-processed portion 3a are positioned so as to be opposed to each other between the process rollers 1a and 1b.

Reference numeral 4 denotes a metal strip to be processed by passing between the processing rollers 1a and 1b in the direction of arrow A, and the metal strips 5a and 5b are arranged on the opposite sides of the processing rollers 1a and 1b from the side where the metal strip 4 passes. Are shown, and each is constituted by a combination of three small-width rollers 5a 'and 5b'.

The outer peripheral portions 6a of the small-width rollers 5a 'and 5b'
6b is in contact with the non-processed portions 3a, 3b of the process rollers 1a, 1b, respectively, whereby the process rollers 1a,
1b. The width w of the outer peripheral portions 6a, 6b is set smaller than the width W of the non-processed portions 3a, 3b, whereby the outer peripheral portions 6a, 6b come into contact with the protrusion processed portions 2a, 2b to damage the partner, or It is configured not to damage itself.

Concave portions 7a and 7b are formed between the narrow rollers 5a 'and 5b', respectively, and the projections 2a and 2b are located in these recesses.

Reference numeral 8 denotes a slitter installed in front of a winding machine (not shown), and metal strips 4 processed and fed by the processing rollers 1a and 1b are alternately formed on the front and back in the width direction. At the boundary between the processed protrusion units 9 and 10, the cutting unit is installed for continuous cutting in the longitudinal direction.

According to the present embodiment in which work is performed based on the above configuration, since the processing rollers 1a and 1b are supported by the support rollers 5a and 5b, they do not bend.
Therefore, even if long rollers are used as the processing rollers 1a and 1b and the number of metal strips with protrusions is increased, the width dimension of the product does not become uneven due to the bending of the rollers.

In addition, since the supporting rollers 5a and 5b support the processing rollers 1a and 1b by using the non-processing portions 3a and 3b, the shape of the processing rollers 1a and 1b is skillfully utilized. Therefore, it is possible to manufacture a metal strip with projections without waste in equipment structure.

FIGS. 3 and 4 show another embodiment of the method for producing a metal strip with projections according to the present invention. The difference between FIGS. 1 and 2 is that the support rollers 5c and 5d are each constituted by one roller, and three small-width rollers 5c 'and 5d' are formed on each of them by machining. It is in.

Non-working parts 3a, 3 of working rollers 1a, 1b
In order to avoid contact with the protrusion processing portions 2a, 2b of the processing rollers 1a, 1b, between the outer peripheral portions 6c, 6d respectively set to the width dimensions w, w1 smaller than the width dimensions W, W1 of b. Are provided with recesses 7c and 7d, and the projection processed portions 2a and 2b are located in these recesses 7c and 7d, thereby protecting the projections 2a and 2b from being damaged by contact with the support rollers 5c and 5d.

1 and 2, the processing rollers 1a and 1b are supported by the supporting rollers 5c and 5d. Therefore, when a long roller is used as the processing rollers 1a and 1b, a product is not produced. Does not become uneven in the width direction. Non-processed parts 3c and 3
By making good use of d, simultaneous production of a plurality of metal strips with projections can be realized in a stable state.

[0025]

As described above, according to the method of manufacturing a metal strip with projections according to the present invention, the processed portions and the non-processed portions are alternately provided in the axial direction, and the protruded processed portions and the non-processed portions are respectively provided. In a pair of processing rollers arranged to face each other so that the positions of the non-processed portions are opposed to each other, a support roller is disposed on the side opposite to the portion where the metal strip passes, and the outer peripheral portion of this support roller is Since the processing roller is brought into contact with the processing portion and thereby supports the processing roller, the processing roller does not bend. Therefore, even if the processing roller is lengthened and the number of strips is increased, the thickness of the metal strip is reduced. There is no unevenness in the width direction.

Further, the support of the working roller by the support roller utilizes the non-worked portion of the working roller, so that it is rational in terms of equipment structure. The work can be performed in a stable state without causing any damage. In addition, since it is not necessary to increase the diameter of the processing roller in order to prevent bending as in the conventional case, a long processing time for projecting the surface of the processing roller is unnecessary, and, of course, the apparatus is not increased in size and weight. .

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a method for manufacturing a metal strip with projections according to the present invention.

FIG. 2 is a perspective view of the embodiment of FIG.

FIG. 3 is a front view showing another embodiment of the method for producing a metal strip with projections according to the present invention.

FIG. 4 is a perspective view of the embodiment shown in FIG. 3;

[Explanation of symbols]

 1a, 1b Processing roller 2a Projection processing part 3a Non-processing part 4 Metal strip 5a, 5b, 5c, 5d Supporting roller 5a ', 5b', 5c ', 5d' Small width roller 6a, 6b, 6c, 6d Outer peripheral part 7a, 7b , 7c, 7d recess 8 slitter 9, 10 machining projection unit

Claims (6)

[Claims] 1. A projection processing portion having a predetermined width and a non-processing portion having a predetermined width are alternately arranged in the axial direction, and the projection processing portion on the other side and the non-processing portion of the own are opposed to each other. The metal strip is passed through a pair of processing rollers arranged opposite to each other,
In a method of manufacturing a metal strip with projections, wherein a processing projection unit by the projection processing portion is alternately formed on a front and a back in a width direction of the metal strip, a support roller is provided on a side of the processing roller opposite to a portion where the metal strip passes. Wherein the outer peripheral portion of the support roller is brought into contact with the non-processed portion, and the process roller is supported by the support roller. 2. The metal strip with projections according to claim 1, wherein said support roller has a concave portion at a position facing said projection processing portion to avoid contact with said projection processing portion. Manufacturing method. 3. The apparatus according to claim 2, wherein said support roller is constituted by a combination of a plurality of rollers, and said recess is constituted by a space between said plurality of rollers.
The method for producing a metal strip with a protrusion according to the paragraph. 4. The apparatus according to claim 2, wherein said support roller is constituted by one roller, and said recess is constituted by a groove provided on a circumference of said one roller. Of producing metal strips with protrusions. 5. The method according to claim 1, wherein the outer peripheral portion has a smaller width than the non-processed portion. 6. The process according to claim 1, wherein the metal strip is cut from a boundary of the processing projection unit by a slitter installed in the same line as the processing roller after processing by the processing roller. Item 2. The method for producing a metal strip with protrusions according to Item 1.