JPS59144562A - Device for producing foil piece - Google Patents

Abstract

PURPOSE:To provide a titled device which produces directly foil pieces from a molten material with high efficiency by constituting so that a molten material is supplied onto the outside circumferential surface of a heat collecting drum formed with many small surfaces by spiral grooves and axial grooves extending in the directons intersecting with each other and rotating at high speed. CONSTITUTION:A heat collecting drum 10 provided with 1- plural sets of spiral grooves 4a, 4b or annular grooves, etc. rounding by extending in the directions intersecting with each other on the outside circumferential surface of a cylindrical body and plural axial grooves 25 extending in the axial direction so that both grooves are intersected with each other, and formed with many small faces 6 of a triangular shape, etc. segmented by these grooves is rotated at a high speed by the operation of a rotating device 11 provided with a motor, etc. On the other hand, the molten material 2, such as an Al alloy, held at an adequate temp. by a heating element 18 in a melting tank 17 of a melting device 13 is experted thereon with gaseous pressure through a communicating pipe 19 so that the belt-like molten material is continuously supplied from the nozzle 12 in the lower part of the tank 17 onto the outside circumferential surface of the drum 10. The material 2 cools and solidifies on said surface 6 and is stripped and scattered by the centrifugal force of revolution of the drum 10, by which the foil pieces are continuously obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention continuously supplies molten material to a heat collecting drum that has a large number of facets on its outer circumferential surface and rotates at high speed, and uses the facets to form a piece of foil. The present invention relates to an apparatus for directly manufacturing foil pieces from a molten material by forming the foil pieces and scattering and peeling the foil pieces using the centrifugal force of a heat collecting drum.

Conventionally, elongated solid products (hereinafter referred to as filaments) are used.

) is shown in Figures 1 and 2 (Japanese Patent Publication No. 52-2
No. 2898).

This manufacturing apparatus includes a cooling member 1 whose outer peripheral edge 1a having a V-shaped cross section is made discontinuous by a plurality of semicircular grooves 1b, a rotating device (not shown) for rotating the cooling member 1 at high speed, and the cooling member 1. A melting device (not shown) is used to melt and supply filament material to the cooling member 1.Then, the molten material 2 is applied from above to the tip of the outer peripheral edge 1a of the rotating cooling member 1.
The cooling member 1 extracts the heat of the supplied molten material 2 to solidify at least a part of the molten material 2, and the molten material 2 is scattered by the centrifugal force of the cooling member 1. By peeling from the outer peripheral edge 1a and continuously performing this step, a large number of filaments 3 having a length corresponding to the length of one section of the outer peripheral edge separated by the groove 1b are manufactured in succession. I can do it. Note that the length of the filament 3 can be made shorter as the length of one section of the outer peripheral edge of the cooling member 1 is made shorter.

However, in the filament manufacturing apparatus as the prior art described above, the shape of the outer peripheral edge 1a of the cooling part 1 is as follows.
Due to the continuous spire shape in the circumferential direction, the solid product that can be produced is limited to elongated filaments 3.

Therefore, in view of the problems of the prior art as mentioned above, the applicant first filed an application for a foil piece manufacturing apparatus that can directly manufacture foil pieces from molten material (Japanese Patent Application No. 57-4
．． No. 7874 1 Title of invention: Foil piece manufacturing device, patent application 1987
-5851.5 Title of the invention: Foil piece manufacturing device, etc.).

All of these foil flake manufacturing devices have a simple structure and have high foil flake production efficiency, but they are limited to a certain range in which the grooves that form the many facets of the heat collecting drum extend. Therefore, the shape of the facet is limited to a quadrilateral with equal length on all four sides, such as a rectangle or a rhombus, or a parallelogram in which all angles are not right angles, and these shapes I was only able to make pieces of foil.

This invention was made in view of the insufficiencies of the Hiko prior art, and its purpose is to make it possible to directly produce foil pieces having shapes such as triangles and quadrilaterals from molten metal. The goal is to provide equipment.

As shown in the embodiments shown in FIGS. 3 to 12, the present invention provides a heat collecting drum 10 in which a large number of small surfaces 6 are formed on the outer peripheral surface of a cylindrical body, and this heat collecting drum 10. It has a rotating device 11 that rotates at a high speed, and a nozzle 12 facing the outer peripheral surface of the heat collecting drum 10, and this nozzle 12
It also includes a melting device 13 that flows out the molten material 2 and continuously supplies the molten material 2 to the outer peripheral surface of the heat collecting drum 10,
The large number of small surfaces 6 of the heat collecting drum 10 have one or more sets of spiral grooves 4a extending and winding in directions intersecting with each other.
, 4b, a groove in the form of any one of a plurality of annular grooves 26a, 26b extending in directions intersecting each other and continuous in an endless manner, or one or more spiral grooves extending in one direction, and a heat collecting drum. The present invention relates to a foil piece manufacturing apparatus characterized in that a plurality of axial grooves 25 extending parallel to the axial direction of the foil piece 10 are formed in a portion other than those grooves by intersecting with each other.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIGS. 3 to 8 are diagrams showing an embodiment of the invention. .

To explain the configuration without changing it, 1 shown in Figures 3 to 7
0 is a heat collecting drum which is a cooling member, and on the outer circumferential surface of this heat collecting drum 10 which forms a cylinder, there is a continuation from one end in the axial direction to the other end, and the axial center of the heat collecting drum 10 is continuous. A plurality of spiral grooves 4a, 4b extending and winding in directions that intersect with each other centering on the line pass through an intersection point where both spiral grooves 4a, 41) intersect, and extend parallel to the axial direction of the heat collecting drum 10. By providing the plurality of axial grooves 25 to intersect with each other, a large number of isosceles triangular facets 6 are formed in the portions excluding the double spirals, the spiral grooves 4a, 41), and the axial grooves 25. As shown in FIG. 5, the spiral grooves 4a and 41) shown in this embodiment extend from both ends of the cylindrical body toward the rear in the rotational direction of the heat collecting drum 10 at angles θl and θ2 of 45°, respectively. It extends to the end. And each spiral groove 4
The intervals between the spiral grooves 4a and 4b are set to be equal, however, the inclination angle θ1. θ2 is not limited to this example, and the angle θ1 . θ2 can be set arbitrarily within the range of 5 degrees <θ1 or θ2 + 85 degrees, and both angles θ1° θ2
When the angles θ1 and θ2 are made equal, a facet 6 forming an isosceles triangle is obtained, and when both angles θl and θ2 are changed, a facet 6 forming a triangle other than an isosceles triangle is obtained.

Further, on the small surface 6 of the heat collecting drum 10, there are shown in FIGS. 6 and 7.
As shown in the figure, an inclined surface 6a is provided on the groove wall surface of each spiral groove 4a, 41) on the rear side in the direction of rotation of the heat collecting drum 10, thereby reducing the gap between the small surfaces 6 located at the front and rear in the direction of rotation. is adjusted to facilitate landing of the molten material 2 on the facet 6 and its cutting. It is preferable that the ratio of the width N of the spiral grooves 4a, 4b and the axial groove 25 to the width (n) of approximately 3 is approximately 1. In the example, it forms a curved surface, but it may also be 317 blood.

Furthermore, the material of the heat collecting drum 10 is, for example, made of a copper-chromium alloy or the like having a high thermal conductivity and abrasive side slopes. Reference numeral 11 shown in the figure is a rotating device for rotating the heat collecting drum 10 at high speed; This rotating device 11 is constituted by an electric motor, a transmission, and other well-known equipment, and is connected to the heat collecting drum 10, 10a. In this way, the circumferential speed of the small surface 6 provided on the outer circumferential surface of the heat collecting drum 10 is controlled by the rotating device 11 at high or low speeds. A box body 22 is installed below the heat collecting drum 10, and each small surface 6 of the heat collecting drum 10 is placed inside this box body 22.
The foil pieces 23 that are peeled off and scattered are accumulated and stored. 24 is a wiper for wiping off the foil pieces 23 that have accumulated on the small surface 6 without being scattered and peeled off by the centrifugal force of the heat collecting drum 10.

13, which is not shown in FIGS. 3 and 4, is a melting device. This melting device 13 consists of a melting tank 17 made of refractory material such as graphite, quartz, or wrought iron material to make a crucible, and a heating element 18 wound around the melting tank 17. It is arranged on one side of the thermal drum 10. A nozzle 12 having an opening extending in the axial direction of the heat collecting tram 10 is provided at the lower part of the melting tank 17, and from this nozzle 12, the melted aluminum alloy 2, etc. accommodated in the melting tank 17 is emitted. Flows out in the form of a band, and the flow is continuously supplied to the outer circumferential surface of the heat collecting drum 10. 19 is a communication pipe that communicates a gas supply source (not shown) with the melting tank 17, and air or an inert gas such as argon is supplied from the gas supply source. 1 and 21 are thermometers; Detect the temperature of the molten ink material 2.

Next, the action will be explained.

For example, the molten material 2 melted in a melting furnace (not shown) is stored in the melting tank 17.
At the same time, it is heated by a heating element 18 to maintain the melting rate 2 at a predetermined temperature at all times. The temperature adjustment of the melting process 1 and 2 is automatically controlled by a temperature control device (not shown), but the operator can visually check the temperature at that time using the temperature controller 21. Then, argon gas having a certain pressure is supplied into the melting tank 1γ from a gas supply source (not shown) through the communication pipe 19, and a predetermined pressure is applied to the melting tank 1 to cause the melting tank 1γ to pass through the nozzle. It flows out from 12 in a band shape.

On the other hand, the heat collecting drum 10 is rotated at high speed by the operation of a rotating device 11 connected via a shaft 10a. The molten material 2 supplied to the rotating heat collecting drum 10 continuously contacts the outer peripheral surface of the heat collecting drum 10 in a band shape, which is within a slightly wider range than the supply length of the molten material 2. The difference between the length of the melting monthly interest 2 in the axial direction of the heat collecting drum 10 and the length of the outer peripheral surface to which it is supplied is determined by the supply pressure of the melting monthly interest 2,
This is caused by its viscosity, etc.

The molten material 2 supplied to the outer circumferential surface of the heat collecting drum 10 is spread flatly on the outer circumferential surface by the rotation of the heat collecting drum 10, and the molten material 2 on the outer circumferential surface is spread on a small surface. Spiral groove 4a forming 6.

4b and the coaxial groove 25, so that on the small TkIB, a melted piece forming an isosceles triangle as shown in FIG. 8, that is, a foil piece having a shape equivalent to a facet. 23 is formed by profiteering.

The thickness T of the foil piece 23 is determined by the circumferential speed of the heat collecting drum 10, the temperature of the molten material 2, superheating (amount of superheating), flow rate, its viscosity, etc., and these are determined in advance under suitable manufacturing conditions. It is necessary to set it to .

The foil pieces 23 attached to each small surface 6 of the heat collecting drum 10 are each absorbed heat by the heat collecting drum 10, and only a portion of the foil pieces 23 solidify at their necks. The particles are scattered at a distance of φ1 from each facet 6.

Then, the foil piece 23 in flight is further cooled by the surrounding atmosphere and completely solidified, and in this way, a predetermined foil piece 23 is manufactured. Therefore, it is possible to manufacture as many foil pieces 23 at once as there are facets 6 within the range to which the molten material 2 is supplied. Since the molten material 2 is continuously supplied to the rotating heat collecting drum 10, the foil pieces 23 can be manufactured continuously, and the manufacturing efficiency can be significantly increased. Furthermore, all of the melted material 2 supplied to the heat collecting drum 10 can be made into foil pieces.

Even if the centrifugal force of the heat collecting drum 10 causes some foil pieces 23 to be scattered and not peeled off, the wiping action of the wiper 24 can reliably peel off such foil pieces 23 from each facet 6. . Then, the foil pieces 23 wiped off by the wiper 24 are accommodated and accumulated in the box body 22 in the same way as the foil pieces 23 that are naturally scattered and peeled off.

Next, the results of experiments conducted based on this example will be shown.

A. Material and dimensional specifications of the heat collecting drum 10 B. Experimental results under actual conditions 1 (1) In experiment 1, it was possible to produce 920 kg of foil pieces 23 with a thickness of T-30 to 40 microns per hour. did it.

(2) In Experiment 2, it was possible to produce 1.2 kg of foil piece 23 with a thickness of I'=30-:35 mm per hour.

As is clear from these experimental results, according to this example, it was possible to continuously manufacture a large number of foil pieces 23 each having an isosceles triangle shape with a small area. By making the shape of the opening of the nozzle 12 rectangular, it is possible to flow out the molten material rice 12 from the nozzle 12 in a large amount, and the clogging of the nozzle 12 can be greatly suppressed. Of course, the opening of the nozzle 12 may also be circular.

FIGS. 9(A) to 9(CD) show an embodiment of a reservoir for supplying the molten mixture 2 to the outer circumferential surface of the heat collecting drum 10. FIG.

That is, in FIG. 2A, the opening of the nozzle 12 is a round hole. In FIG. 9 (I3), the opening of the nozzle 12 is made into a round hole, the melting device 13 is installed below the heat collecting drum 10, and the melted material 2 is transferred from the lower melting device 13 to the lower heat collecting drum 10. It was made so that it could be heard.

FIG. 9 (q shows the opening of the nozzle 12 provided very close to the outer peripheral surface of the heat collecting drum 10 3, and FIG. 9 (1)) shows the opening of the nozzle 12 provided below the heat collecting drum 10. By bringing the opening of the installed nozzle 12 close to the outer peripheral surface of the heat collecting drum 10, oxidation, nitridation, etc. of the molten layer 2 until it reaches the small surface 6 is prevented. With this configuration, the quality of the foil 123 can be improved.1 It goes without saying that other known means for supplying the molten material 2 can also be employed.

1 In addition, FIGS. 10(A) to 10(C) respectively show the shape of the opening [1] of the nozzle 12 and the cross-sectional form of the injection flow of the molten metal monthly 2 flowing out from this opening, that is, FIG.
In A), the shape of the opening of the nozzle 12 is circular, and in this case, the cross-sectional shape is circular and the molten material 2 flows out. In this embodiment, the opening of the nozzle 12 can be easily processed. In the figure (B), the shape of the opening of the nozzle 12 is rectangular, and in this case, the cross-sectional shape is barrel-shaped, and the molten stratified material 2 flows out. In this embodiment, the production efficiency of the foil pieces 23 can be improved. Furthermore, in the same figure (qd), the shape of the opening of the nozzle 12 is narrow on the inside in the longitudinal direction and wide on the outside to form a concave lens shape, and in this case, the cross-sectional shape is rectangular. The molten material 2 flows out.Generally, based on the viscosity of the molten layer 2, the amount of injection at the center is greater than the amount of injection at both ends in the longitudinal direction, so if the material is formed as shown in FIG. By doing so, it is possible to correct the unevenness of the injection amount, and the molten layer 1''2 can be flowed out with a uniform width. Therefore, by increasing the width at both ends, it is possible to compensate for the outward movement.

In addition, the dimensions of the opening of the nozzle 12 are from 1 to 5 in length.
Approximately 0 fights is preferable, but it may be longer than this,
Further, the width thereof is preferably about Q, ] Wm to 5 mm, but it is not limited to the dimensions shown in this embodiment. As the molten layer PI 2, other than this embodiment, for example, alloys based on copper or nickel, iron, amorphous alloys, and other types of monthly interest can be used.

Further, although a plurality of spiral grooves 4a and 4b are provided in this embodiment, it goes without saying that each of these may be one continuous spiral groove.

11 and 12 show other embodiments of the shape of the face 6 of the heat collecting drum 10, respectively.

The facet 6 shown in FIG. 11 has an increased number of axial grooves 25, that is, the number of circumferential divisions, in the embodiment described above1, and in this case is an isosceles triangle. small face 6
and a large number of trapezoidal facets 6 are formed.
The facets 6 shown in Figure 12 are a parallelogram-like facet 6 in which all angles are not right angles, a trapezoid-like facet 6 in which two angles are right angles, and a triangular facet 6. Face 6 and Karataru. This small surface 6 has a plurality of spiral grooves 4b extending in one direction.
and a plurality of axial grooves 25 are formed in the portions excluding these grooves 41) and 25.

These +-'1. , + 12 Heat collection drum 1 shown in Fig.
According to No. 0, a large number of foil pieces with different shapes can be manufactured.

Furthermore, FIG. 13 shows another example of the shape of the grooves for forming the facets 6 on the heat collecting drum 10.

In the embodiment, by providing a plurality of annular grooves 26a, 2611 that are continuous in directions intersecting each other, and a plurality of axial grooves 25 that extend parallel to the axial direction of the heat collecting drum 10,
A small face 6 is formed in a portion excluding these grooves 25, 268, 261). In other words, the figure is a developed diagram showing the shapes of the matching grooves 25, 268, 26b forming the facet 6 individually. In each pattern, both ends in the circumferential direction Y are By connecting them, each cylinder is constructed. pattern 1
is an annular groove 26 that is inclined in one direction with respect to the axial direction
With shift, pattern 2 has the annular groove 26 in the axial force direction.
The pattern 3 has an annular groove 261 which is inclined in the opposite direction to the pattern 8, and further has an axial groove 25 extending parallel to the axial direction X.
By curing and combining these three patterns, a facet 6 as shown in pattern 4 can be formed.

Note that the annular grooves 26a, 26+] may be elliptical grooves formed at the outer edge of the cut when the cylinder is cut at an angle with respect to its axial direction; in this case, (F id:
In addition to the quadrilateral facet 6, a facet 6 having a circular arc portion is formed.

As explained above, according to the present invention, a heat collecting drum having a large number of facets formed on the outer circumferential surface of a cylinder by a spiral groove or an annular groove and an axial groove is rotated at high speed. By adopting a structure in which the molten material is continuously supplied to the outer peripheral surface of the heat collecting drum, foil pieces of various shapes such as triangular and quadrilateral tubes can be manufactured from the molten material. Moreover, instead of being able to manufacture foil pieces at once for the number of facets for forming the foil pieces that are within the range where the molten material is supplied, the process for manufacturing the foil pieces is carried out continuously. This makes it possible to provide a foil piece manufacturing apparatus with extremely high manufacturing efficiency. Furthermore, the present invention has a simple structure consisting of a heat collecting tram, a rotating device for rotating it at high speed, and a melting device for continuously supplying the melted material to the heat collecting drum. Thus, it is possible to provide a foil piece manufacturing apparatus with high production efficiency.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an outline of a filament manufacturing apparatus as a prior art, FIG. 2 is an enlarged sectional view taken along the line H in FIG. 1, and FIGS. 3 to 8 are an embodiment of the present invention. Fig. 3 is a front view schematically showing the device, and Fig. 4 is a front view showing the outline of the device.
5 is an explanatory diagram of the heat collection drum, FIG. 6 is an enlarged side view of the main part of the heat collection drum, and FIG. 7 is an enlarged plan view of the main part. FIG. 8 is a diagram showing a foil piece;
FIG. 9 (Beanashi CD) is a diagram showing an embodiment of the nozzle,
Figure 10 FA> or C) is a diagram showing the shape of the nozzle opening and the cross-sectional shape of the molten material flowing out from this opening 1. FIG. 12 is a diagram showing an example of the third embodiment of the heat collecting drum face shape.
Fig. 13 is a developed explanatory view showing an example in which a /'' surface is formed using an annular groove and an axial groove. 2 is a molten material, 4a, 4b 1 is a spiral groove, 6 is a facet, 6a is an inclined surface, 10 is a heat collecting drum, 11 is a rotating device, 12 is a nozzle, 13 is an IJi melting device, 17 is a melting tank, 1B is a heating element, 19 is a communication pipe, and 22 is a box 23 is a foil piece, 24 is a wiper, 25 is an axial groove, and 26a261) is an annular groove. Patent Applicant Nippon Yakin Kogyo Co., Ltd. Representative Patent Attorney Tetsuya Mori Patent Attorney Yoshiaki Naito Patent Attorney Masami Shimizu Patent Attorney Kajiyama Kazukore 362 - Figure 3 Figure 5'+D, 40

Claims (1)

[Claims] A heat collecting drum having a plurality of facets formed on the outer circumferential surface of a cylindrical body, a rotating device for rotating the heat collecting drum at high speed, and a nozzle facing the outer circumferential surface of the heat collecting drum, and ,
A melting device that flows out the molten material from this nozzle and continuously supplies the molten material onto the outer peripheral surface of the heat collecting drum,
The large number of facets of the heat collecting drum may be formed by one or more sets of spiral grooves extending and winding in directions that intersect with each other, a plurality of annular grooves extending in directions that intersect with each other and continuing endlessly, or one set of spiral grooves that extend in directions that intersect with each other and are continuous. By providing a groove in any one form of one or more spiral grooves extending in the direction and a plurality of axial grooves extending parallel to the axial direction of the heat collecting drum to intersect with each other,
A foil piece manufacturing device characterized in that these grooves are formed in a portion other than the grooves.