JP2001239344A - Manufacturing apparatus for metallic plate bar with protrusion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing apparatus for a metallic plate bar with protrusion which simultaneously allows one to manufacture a plurality of metallic plate bars having uniform thickness in the width direction and with protruding portion. SOLUTION: Along the axial direction on the circumferential surface of rolling shafts 11a, 11b, a protruding fabricated portion 2 having different diameters and a non-fabricated portion 3 are alternately formed, constituting a pair of fabricated roller 1a, 1b and concurrently the protruding fabricated portion 2 of one fabricated roller 1a and the non-fabricated portion 3 of the other fabricated roller 1b, and the non-fabricated portion 3 of one fabricated roller 1a and the protruding fabricated portion 2 of the other fabricated roller 1b are so opposed to each other and also each end surface 6 of the protruding fabricated portion 2 in the larger diameter side or each end surface 6 of non-fabricated portion 3 is so engaged with each other that both the fabricated rollers 1a, 1b are located with a predetermined clearance S and supporting rollers 21a, 21b to support as well as slide the circumferential surface of the non-fabricated portion 3 are placed respectively in the vertical direction up and down of the pair of fabricated rollers 1a, 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a metal strip with projections, and more particularly to an apparatus for manufacturing a plurality of metal strips with projections simultaneously using a processing roller.

[0002]

2. Description of the Related Art Some heat transfer tubes used in air conditioners or refrigerators are manufactured by welding. In this case, generally, a metal strip (a metal strip with a projection) such as a copper plate or an aluminum plate having a projection for heat exchange formed on one surface.
Are subjected to seam welding with the projection forming surface inside to manufacture a heat transfer tube.

[0003] As a method of manufacturing the metal strip with projections, for example, on a peripheral surface of a pair of processing rollers, a projection processing portion and a non-processing portion are alternately formed along the axial direction, and one of the processing rollers is formed. The two processing rollers face each other so that the projection processing part of the other processing roller meshes with the non-processing part of the other processing roller, and a metal strip is passed between the processing rollers. A method of simultaneously forming a plurality of metal strips with projections by forming projections having a width and subsequently cutting the boundaries of the projections with a slitter or the like (Japanese Patent Laid-Open No. 4-31901).
No. 9).

However, in this method, since the metal strip is cut at the boundary between the projections after forming the projection on the metal strip, the entire metal strip is cut when the boundary between the projections is cut. Is shifted in the width direction, the metal strip is cut at a portion other than the boundary of the protrusion, and as a result, the yield of the metal strip with protrusion is reduced.

[0005] In view of the above, the present inventors have previously proposed a method of manufacturing a metal strip with projections having a good yield, by forming a pair of projections having different diameters along the axial direction and non-processed portions alternately. A method was proposed in which, immediately after a metal strip was continuously cut at a predetermined width in a longitudinal direction using a processing roller, a projection was formed on each metal strip cut by the processing roller (particularly, a method). No. 11-145120).

[0006]

By the way, in this manufacturing method, the length of the working roller in the axial direction is increased, the number of the processed portions and the non-processed portions is increased, and simultaneously, a large number of metal strips with the projected portions are manufactured. (When the processing (production) efficiency of the metal strip with projections is to be increased), the thickness of the metal strip with projections in the width direction becomes uneven due to the bending of the processing roller in the axial direction. was there.

At this time, if the diameter of the processing roller is increased so that the processing roller does not bend, the contact area between the processing roller and the metal strip increases, and the time required for the roller to process the surface of the metal strip increases. This leads to an increase in the size and weight of the device.

Accordingly, an object of the present invention is to provide an apparatus for manufacturing a metal strip with projections capable of simultaneously manufacturing a plurality of metal strips with projections having a uniform thickness in the width direction.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is to alternately form a processed portion and a non-processed portion having different diameters along the axial direction on the peripheral surface of the rotating shaft. And forming a pair of processing rollers, the protrusion processing part of one processing roller, the non-processing part of the other processing roller, the non-processing part of one processing roller, and the protrusion processing part of the other processing roller face each other. So that the two processing rollers are arranged at a predetermined interval so that the end faces of the large-diameter-side projection processing part or the non-processing part mesh with each other. Support rollers that slide and support the peripheral surface of the processing portion are arranged.

According to the apparatus for manufacturing a metal strip with projections,
By supporting and supporting the upper and lower portions of the pair of processing rollers in the vertical direction with the support rollers, bending of the processing rollers in the axial direction can be prevented.

Here, the support roller has a non-processed portion along the axial direction on the peripheral surface of the rotating shaft, and the peripheral surface of the non-processed portion is in contact with the peripheral surface of the non-processed portion of the process roller. It is preferable to arrange the support rollers so as to be in contact with each other.

It is preferable that the supporting rollers are arranged such that the peripheral surface of the supporting roller is in contact with the peripheral surface of the non-processed portion of the processing roller.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an apparatus for manufacturing a metal strip with projections according to the present invention, FIG. 2 is a view in the direction of arrow A in FIG. 1, and FIG. 3 is a view in the direction of arrow B in FIG.

As shown in FIGS. 1 to 3, the apparatus for manufacturing a metal strip with projections according to the present invention comprises a rotating shaft (not shown in FIG. 1).
A large-diameter projection processing portion 2 and a small-diameter non-processing portion 3 are alternately formed on the peripheral surfaces of 11a and 11b along the axial direction to form a pair of processing rollers 1a and 1b, and one of the processing rollers 1a and 1b. The protrusion processing portion 2 of the roller 1a, the non-processing portion 3 of the other processing roller 1b, and the non-processing portion 3 of the one processing roller 1a face the protrusion processing portion 2 of the other processing roller 1b.
In addition, the two processing rollers 1a and 1b are arranged at a predetermined interval S so that the edges (end faces) 6 of the large-diameter projection processing part 2 mesh with each other, and the pair of processing rollers 1a and 1b are vertically moved in the vertical direction. In addition, support rollers 21a and 21b that slide and support the peripheral surface of the non-processed portion 3 are arranged.

The support rollers 21a and 21b are
The non-processed portions 23 and the concave portions 24 which are convex portions are formed alternately along the axial direction on the peripheral surfaces of the a and 31b.
The peripheral surfaces of the non-processed portions 23 of the support rollers 21a and 21b are arranged in contact with the peripheral surfaces of the non-processed portions 3 of the process rollers 1a and 1b.

More specifically, the support rollers 21a and 21b are not so engaged with the edge 26 of the non-working part 23 of the support rollers 21a and 21b and the edge 6 of the protrusion working part 2 of the processing rollers 1a and 1b. The axial length of the processing portion 23 is shorter than the axial length of the non-processing portion 3 of the processing rollers 1a and 1b. The non-processed portion 23 is processed by the process rollers 1a and 1b.
In a state where the peripheral surface of the non-processed portion 23 and the peripheral surface of the protrusion processed portion 2 are in contact with each other, the supporting rollers 21a, 21b are vertically disposed above and below the processing rollers 1a, 1b. 2
1b are respectively arranged.

In the processing rollers 1a and 1b and the support rollers 21a and 21b arranged as described above, the support rollers 21a and 21b are arranged so that the peripheral surface of the concave portion 24 and the peripheral surface of the projection processing portion 2 do not come into contact with each other. , a step D ₂ of the non-processed portion 23 and the recess 24 in 21b, the processing rollers 1a, larger form than the step D ₁ of the the projection processing unit 2 and the non-processing section 3 in 1b.

On the peripheral surface of the projection processed portion 2, a metal strip 5 with a projection is provided.
Grooves 10 for forming the projections 7a and 5b are formed.

The processing rollers 1a and 1b shown in FIGS.
Although only two protrusion processed portions 2 and non-processed portions 3 are shown in the drawing, the projection processed portion 2 and the non-processed portion 3 have a large number in the axial direction.

Next, the operation of the apparatus for manufacturing a metal strip with projections of the present invention will be described.

First, in the apparatus for manufacturing a metal strip with protrusions arranged as described above, a metal strip made of copper or a copper alloy or the like is provided on the metal strip introduction side (left side in FIG. 3) between the processing rollers 1a and 1b. Guide 4

A plurality of metal strips 4 guided between the processing rollers 1a and 1b are continuously formed in a predetermined width by the edges 6 of the large-diameter projection processing portions 2 of the processing rollers 1a and 1b. And a large number (4 in FIGS. 1 and 2)
Book).

Immediately thereafter, each metal strip 4a is guided by one of the processing rollers 1a and 1b while being guided by the peripheral surface of the projection processing portion 2 and the non-processing portion 3 and the side surface of the projection processing portion 2. Projection processing part 2 and the other processing roller 1b
And between the non-processed part 3 of one processing roller 1a and the protrusion processed part 2 of the other processing roller 1b, and each metal strip 4a is subjected to groove roll processing. You.

The metal strip 4a formed by the groove processing by the protrusion processing portion 2 of the processing roller 1a has a protrusion 7 having a predetermined width on its surface (the upper surface in FIG. 3) and a processing roller 1b.
The metal strip 4a formed by the projection processing section 2 is formed with a projection 7 having a predetermined width on the back surface (the lower face in FIG. 3) to obtain metal strips 5a and 5b with protrusions as grooved roll processed products.

Here, the metal strip 4 is cut by the processing roller 1.
Since the cutting is performed by the edges 6 of the large-diameter projection processed portions 2 in a and 1b, a cutting device (slitter or the like) for cutting the metal strip 4 is not particularly required, and the equipment cost can be reduced.

The metal strips 4a pass between the processing rollers 1a and 1b while being guided by the peripheral surfaces of the projection processed portion 2 and the non-processed portion 3 and the side surfaces of the projection processed portion 2, so that each metal strip 4a The projections 7 can be formed with high precision on the strips 4a, and the metal strips with projections 5a and 5b can be manufactured with high yield.

Further, since the projection 7 is formed after the metal strip 4 is cut into the metal strips 4a, the width of the metal strip 4 in the width direction with respect to the processing rollers 1a and 1b when the metal strip 4 is cut. Some deviation can be tolerated.

According to the present invention, the processing rollers 1a, 1b
Is pressed down from above and below in the vertical direction by the supporting rollers 21a and 21b, and is supported, thereby forming the processing rollers 1a and 1b.
Does not warp due to its own weight or warp during groove roll processing. Thereby, when manufacturing many metal strips 5 with projections simultaneously, there is no possibility that the thickness in the width direction of each metal strip 5 with projections becomes uneven.

Further, since there is no possibility that the processing rollers 1a and 1b are bent, the diameter of the processing rollers 1a and 1b may be kept small, and the contact area between the processing rollers 1a and 1b and each metal strip 4a increases. In addition, there is no possibility that the processing time of the surface of each metal strip 4a by the processing rollers 1a and 1b becomes long, and there is no possibility that the apparatus becomes large and heavy.

Further, the axial length of the non-processed portion 23 of the support rollers 21a and 21b is formed shorter than the axial length of the non-processed portion 3 of the process rollers 1a and 1b. a step D ₂ of the processing portion 23 and the recess 24, the processing rollers 1a, is made larger than the level difference D ₁ of the the projection processing unit 2 and the non-processing section 3 in 1b, the support rollers 21a in the arrangement structure described above, When the processing rollers 1a and 1b are supported by the processing roller 21b,
There is no possibility that the projection processed portions 2 of a and 1b are damaged.

Further, since the diameter of the protrusion 2 is larger than the diameter of the non-processed portion 3, the rolling force required to form the protrusion 7 can be reduced.

Next, another embodiment of the present invention will be described.

FIG. 4 is a plan view of a device for manufacturing a metal strip with projections according to another embodiment, as viewed from the direction in which the metal strip advances.

As shown in FIG. 4, the apparatus for manufacturing a metal strip with projections according to the present embodiment has a small-diameter projection processing portion 2 and a large-diameter projection processing portion 2 on the peripheral surfaces of the rotating shafts 11a and 11b along the axial direction. The non-processed portions 3 are alternately formed to form a pair of process rollers 41a,
In addition to forming the first processing roller 41b, the projection processing section 2 of one processing roller 41a, the non-processing section 3 of the other processing roller 41b, the non-processing section 3 of the one processing roller 41a, and the projection processing section 2 of the other processing roller 41b. The processing rollers 41a and 41b are arranged at a predetermined interval S so that the edges of the processing rollers 41a and 41b are opposed to each other and the edges (end faces) 46 of the large-diameter non-processing portion 3 mesh with each other. Support rollers 51a and 51b that slide and support the peripheral surface of the non-processed portion 3 are arranged above and below the vertical direction 41b.

The support rollers 51a, 51b
A non-processed portion 53 is formed along the axial direction on the peripheral surfaces of the support rollers 51a and 51b.
The non-processed portion 53 is disposed in contact with the large-diameter non-processed portion 3 of the processing rollers 41a and 41b.

In this embodiment, it is needless to say that the same operation and effect as those of the present invention can be obtained.

Further, the diameter of the projection processing portion 2 in the processing rollers 41a and 41b is made smaller than the diameter of the non-processing portion 3, so that the large-diameter non-processing portion 3 and the non-processing portion 53 in the support rollers 51a and 51b are brought into contact with each other. Since the contact rollers are arranged in contact with each other, when the processing rollers 41a and 41b are supported by the support rollers 51a and 51b, there is no possibility that the non-processed portion 53 and the protrusion processed portion 2 come into contact with each other, and the protrusion processed portion 2 is damaged. There is no.

Further, since the diameter of the non-processed portion 3 is larger than the diameter of the protrusion processed portion 2, the rolling force required for forming the protrusion 7 is larger than that of the present invention, Both end surfaces in the width direction of the cut metal strips 4a are sharp and have no dripping.

As described above, the embodiments of the present invention are not limited to the above-described embodiments, and it is needless to say that various other embodiments are also conceivable.

[0041]

In summary, according to the present invention, there is provided an excellent effect that the bending of the processing roller in the axial direction can be prevented by pressing and supporting the upper and lower portions of the pair of processing rollers with the support roller in the vertical direction. Demonstrate.

[Brief description of the drawings]

FIG. 1 is a perspective view of an apparatus for manufacturing a metal strip with projections according to the present invention.

FIG. 2 is a view in the direction of arrow A in FIG. 1;

FIG. 3 is a view in the direction of arrow B in FIG. 2;

FIG. 4 is a plan view of a manufacturing apparatus of a metal strip with projections according to another embodiment, as viewed from a traveling direction of the metal strip.

[Explanation of symbols]

1a, 1b, 41a, 41b Processing roller 2 Protrusion processing part 3 Non-processing part (processing roller) 4 Metal strip 4a Metal strip 6,46 Edge (end face of projection processing part on large diameter side or non-processing part) 11a, 11b Rotation Shafts (working rollers) 21a, 21b, 51a, 51b Supporting rollers 31a, 31b Rotary shafts (supporting rollers) 23, 53 Non-working parts (supporting rollers) S Interval

Claims (3)

[Claims] 1. A pair of processing rollers are formed by alternately forming protrusion processing portions and non-processing portions having different diameters along the axial direction on a peripheral surface of a rotating shaft to form a pair of processing rollers. The processing section and the non-processing section of the other processing roller, and the non-processing section of one processing roller and the projection processing section of the other processing roller face each other, and the end face of the projection processing section or the non-processing section on the large diameter side. The two processing rollers are arranged at a predetermined interval so that they mesh with each other, and support rollers that slide and support the peripheral surface of the non-processed portion are vertically arranged above and below the pair of processing rollers, respectively. An apparatus for manufacturing a metal strip with projections, comprising: 2. The supporting roller has a non-processed portion along the axial direction on the peripheral surface of the rotating shaft, and the peripheral surface of the non-processed portion contacts the peripheral surface of the non-processed portion of the processing roller. The apparatus for manufacturing a metal strip with projections according to claim 1, wherein the supporting rollers are arranged so as to be in contact with each other. 3. The apparatus for manufacturing a metal strip with projections according to claim 1, wherein the support rollers are arranged such that a peripheral surface of the support roller is in contact with a peripheral surface of a non-processed portion of the processing roller.