JPH11138218A - Device for corrugating metal plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrugating device for metal plates to manufacture such corrugated metal plates as area contact to a supporting member is enabled. SOLUTION: In a device which consists of a pair of tooth form wheels which are approximately in an engaged state through a prescribed clearance and with which a plate-like material is corrugated by passing the plate-like material W through between the tooth form wheels, a truncated tooth form wheel 1 on which an involute tooth form or a nearly involute tooth form is formed and which is truncated along a line where the top of the tooth form 12 does not take rolling or sliding engagement and square bottom tooth form wheel 2 which has a tooth form in accordance with the top of the tooth form of that truncated tooth form wheel, has the depth of the valley part which is enough to engage with the top part of the tooth form, is arranged through a gap for clearing the thickness of the plate-like material to the truncated tooth form wheel are provided and the corrugating work is executed by passing the plate-like material through between the truncated tooth form wheel and the square bottom tooth form wheel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for corrugating a thin plate.

[0002]

2. Description of the Related Art For example, a cooling fin used for a radiator or an oil cooler for an automobile has a structure in which a so-called corrugated sheet obtained by corrugating a thin plate is fixed to a plate as a support member. In order to manufacture this corrugated sheet, a thin sheet is inserted between a pair of tools having a so-called gear structure as shown in FIG. 5 and corrugated by a gap shape between the two gears.

In this case, the corrugated shape of the corrugated plate has a gently continuous corrugated ridgeline when viewed from one thickness direction of the plate. Then, in order to fix the corrugated sheet having the gently continuous waves to the plate material as the support member, the ridge line on one side of the corrugated sheet is fixed to the plate material as the support member by, for example, brazing or soldering.

[0004]

Here, since the ridge line of the corrugated plate has a gentle curved surface, it comes into linear contact with the support member. Therefore, when the corrugated sheet is brazed or soldered to the supporting member, a large amount of brazing material or solder flows due to surface tension between the ridge line of the corrugated sheet and the supporting member, which causes a decrease in cooling efficiency and an increase in weight. .

[0005] In view of this, attempts have been made to form the corrugated shape into a so-called square shape so as to make surface contact with the supporting member.
No such thing has been provided yet.

The present invention has been made in consideration of the above points, and has as its object to provide an apparatus for corrugating a sheet material for producing a corrugated sheet capable of making surface contact with a support member.

[0007]

In order to achieve the above object, the present invention comprises a pair of toothed wheels which are substantially meshed with each other with a predetermined gap therebetween, and wherein the plate-shaped material passes between the toothed wheels. In a device that corrugates a shape, it is formed into an involute or a tooth profile close to it,
And a truncated toothed wheel whose top is cut along a line that does not roll or slip into mesh, a tooth profile corresponding to the top of the tooth profile of the truncated wheel, and having a depth sufficient to engage with the top of the tooth profile. A trough-shaped toothed wheel having a valley portion and arranged with a gap that clears the thickness of the plate-shaped material with respect to the truncated tooth-shaped wheel, and meshing with the truncated tooth-shaped wheel through the plate-shaped material. An object of the present invention is to provide a corrugating device for a plate material, wherein a corrugated material is passed between a tooth-shaped wheel and the square-bottom tooth-shaped wheel for corrugating.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing a main part of an embodiment of the present invention as a processed state of a plate material. As shown in FIG. 1, a truncated toothed wheel 1 is opposed to a square-bottomed toothed wheel 2 with a workpiece W interposed therebetween, and finishes a pre-processed corrugated sheet sent from the left side in the figure. To the right side of the figure. However, in the process of FIG. 1, only the wave machining on the upper side in the figure is performed, and the wave machining on the lower side in the figure is performed in the next step. Further, depending on the characteristics of the work W, the preliminary step may be omitted.

The truncated tooth wheel 1 rotates clockwise and the square root tooth wheel 2 rotates counterclockwise in accordance with the movement of the workpiece W from left to right. At the point where the tooth of the truncated tooth wheel 1 and the tooth of the square root tooth wheel 2 come closest to each other, they face each other with the thickness t of the workpiece W. When there is a workpiece W, a truncated tooth wheel 1 and a square root tooth wheel 2
Is engaged with the work W. As a result,
The work W is formed in accordance with the shape of the space created between the truncated tooth wheel 1 and the square root tooth wheel 2 when they are engaged.

FIG. 2 is an enlarged view of this space shape (the shape of a region that is filled with the work W during processing). This spatial shape is determined by the shapes of the truncated tooth wheel 1 and the square root tooth wheel 2. The truncated tooth-shaped wheel 1 has a truncated shape cut to form a surface along a rolling line 14 by connecting each top surface with a tooth-shaped main body 11 whose basic shape is an involute shape along a rolling pitch line 13. And a tooth profile apex 12 having the following shape. On the other hand, the square-bottom toothed wheel 2 is a truncated tooth-shaped wheel in which the bottom shape has a thickness t of the workpiece W added to a tooth-shaped main body 21 having a valley (that is, a low peak) that is much shallower than the truncated tooth-shaped wheel 1. A valley 22 having the shape of one tooth profile top 12 is provided at the center thereof. As a result, the space between the truncated tooth wheel 1 and the square root tooth wheel 2 is
The top side and both sides of the trapezoid are changed to a slightly curved surface configuration, and both sides gradually increase in thickness as being away from the top side.

The work W is formed into a substantially truncated triangular wave shape by passing through such a space shape. Then, the combination of the truncated tooth wheel 1 and the square root tooth wheel 2 shown in FIG. 1 and FIG. Can be formed in the same manner.

FIG. 3 shows the overall configuration of such a corrugated sheet forming apparatus. Here, a combination of wheels 101 and 102 for preliminary corrugation is provided on the assumption that a slightly thicker plate material is processed.

Thus, the preforming wheels 101,
After forming from a flat plate into a corrugated sheet having a gently continuous wave shape by 102, square wave forming on the upper side of the figure is performed by a truncated tooth wheel 1a and a square root tooth wheel 2a, and then cutting is performed. The square wave forming on the lower side in the figure is performed by the head tooth wheel 1b and the square tooth wheel 2b.

FIG. 4 shows an example of the configuration of a truncated tooth wheel when the waveform is deep. When the waveform is deep, if the tooth shape is continuous, the tooth shape interferes with the workpiece W as shown by the imaginary line in the drawing, and processing cannot be performed. So at least one
Processing can be performed by forming a tooth profile every other to escape a portion without a tooth profile. However, it is necessary to increase the number of installation steps of the truncated tooth wheel in order to process a portion having no tooth profile. (Modification) The height, width, degree of inclination, and pitch of the waveform are determined by design, and their combinations can be variously changed. Further, the waveform formed as described above can be compressed in the width direction so as to approximate a rectangle in order to further increase the density of the wave shape.

[0015]

According to the present invention, as described above, the work is corrugated with the truncated toothed wheel and the square-bottomed toothed wheel engaged with each other through the thickness of the work, so that the surface contact with the support member is achieved. It is possible to provide an apparatus for corrugating a sheet material for producing a corrugated sheet as possible.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a main part configuration of an embodiment of the present invention as a processed state of a plate material.

FIG. 2 is an explanatory diagram showing, in an enlarged manner, a spatial shape (a shape of a region filled with a work W at the time of processing) between a pair of wheels in the configuration of FIG.

FIG. 3 is an explanatory view showing the entire configuration of a corrugated sheet forming apparatus configured using the embodiment shown in FIGS. 1 and 2.

FIG. 4 is an explanatory view showing another embodiment of the present invention.

FIG. 5 is an explanatory view showing a schematic configuration of a conventional corrugated sheet forming apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 truncated tooth wheel 2 square root tooth wheel 11 tooth profile body 12 tooth profile top 13 rolling pitch line 14 rolling line 21 tooth profile body 22 valley 23 rolling line 101, 102 W Work t Work plate thickness

Claims (4)

[Claims] 1. An apparatus comprising a pair of tooth-shaped wheels substantially meshed with each other with a predetermined gap therebetween, and corrugating the plate-shaped material by passing the plate-shaped material between the tooth-shaped wheels. A frusto-tooth wheel formed into a tooth profile close to the above, and having a tooth profile crest that is cut along a line that does not roll or slip mesh; a tooth profile corresponding to the tooth profile crest of the truncated tooth wheel; A square-bottom toothed wheel having a valley with a depth of meshing with the truncated toothed wheel, being arranged with a gap that clears the thickness of the plate-shaped material with respect to the truncated toothed wheel, and meshing through the plate-shaped material. A corrugating apparatus for a plate material, comprising: passing a plate-shaped material between the truncated tooth wheel and the square-bottom tooth wheel to perform corrugation. 2. A corrugating apparatus for a plate material according to claim 1, wherein two sets of the combination of said truncated toothed wheel and said square bottom toothed wheel are provided continuously, one of which is a first one of said plate-shaped material. A plate material corrugation processing apparatus for processing a wave projecting from a surface to a second surface, and processing the wave projecting from the second surface to the first surface. 3. The apparatus for corrugating sheet material according to claim 2, wherein the pair of tooth wheels clears the thickness of the plate material before the combination of the truncated tooth wheel and the square bottom tooth wheel. A corrugating apparatus for a plate material, which is arranged so as to be engaged with a gap formed between the pair of toothed wheels so that preliminary corrugation processing is performed by passing the plate material between the pair of toothed wheels. 4. The apparatus for corrugating sheet material according to claim 2, wherein the truncated toothed wheels have a first wheel formed with at least every other tooth, and the first wheel has no teeth. An apparatus for corrugating a plate material having second and subsequent wheels having tooth shapes corresponding to the portions.