JPH0225403B2 - - Google Patents

Description

[Detailed description of the invention]

This invention continuously supplies molten material in a band shape to a heat collecting drum that has a large number of small faces on its outer peripheral surface and rotates at high speed, forms foil pieces with the small faces, and collects heat. The present invention relates to an apparatus for directly manufacturing foil pieces from a molten material by scattering and peeling off the foil pieces using the centrifugal force of a drum. Conventionally, as an apparatus for directly producing an elongated filament (hereinafter referred to as a filament) from a molten material, there is, for example, the apparatus shown in Figs. 1 and 2 (Japanese Patent Publication No. 52-22898). . This manufacturing device includes a cooling member 1 in which an outer peripheral edge 1a having a V-shaped cross section is made discontinuous by a plurality of semicircular grooves 1b;
It consists of a rotating device (not shown) for rotating the cooling member 1 at high speed, and a melting device (not shown) which melts and supplies filament material to the cooling member 1. Then, the outer peripheral edge 1a of the rotating cooling member 1
A molten material 2 is supplied from above to the tip of the molten material 2, and 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 also cools the molten material 2. By scattering the member 1 using the centrifugal force and peeling it off from the outer periphery 1a, by continuously performing this process, a piece having a length corresponding to the length of one section of the outer periphery separated by the groove 1b is formed. A large number of filaments 3 can be manufactured in succession. 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 rotating cooling member 1
Since the molten material 2 was supplied in the form of a line, only one filament 3 could be manufactured at a time, and the production efficiency was not fully satisfactory. Moreover, due to the structure of the outer peripheral edge 1a of the cooling member 1, the solid product that can be manufactured is limited to the elongated filament 3. This invention has been made in view of these conventional problems, and an object of the invention is to be able to directly manufacture a large number of foil pieces at once from a molten material, and to produce a large number of foil pieces at once. It is another object of the present invention to provide a foil manufacturing device that can continuously manufacture foil pieces of 1 to 100 ml, and has a simple structure, easy handling, and high production efficiency. The purpose of the present invention is to provide a piece manufacturing device. Therefore, as in the embodiments shown in FIGS. 3 to 11, the present invention has a drum large diameter portion 7 and
A drum small diameter portion 8 having a smaller diameter than this drum large diameter portion 7
A suitable number of small surfaces 6 are arranged alternately in parallel, and discontinuously formed on the outer peripheral surfaces of the drum large diameter section 7 and the drum small diameter section 8 by steps 5a and 5b.
a and 6b, and a rotating device 1 for rotating the heat collecting drum 10 at high speed.
1 and a nozzle 12 extending in the axial direction of the heat collecting drum 10, and the molten material 2 flows out from the nozzle 12 in a band shape, and the molten material 2 is continuously applied to the outer peripheral surface of the heat collecting drum 10. Melting device 1
3. The present invention relates to a foil piece manufacturing apparatus characterized by comprising the following. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIGS. 3 to 8 are diagrams showing one embodiment of the present invention. First, to explain the structure, numeral 10 shown in FIGS. 3 to 7 is a heat collecting drum which is a cooling member. It is composed of a plurality of small diameter drum parts 8, and an appropriate number of both large and small drum parts 7, 8 are arranged in parallel alternately. On the outer peripheral surfaces of the drum large diameter part 7 and the drum small diameter part 8, as shown in enlarged form in FIGS.
A plurality of letter-shaped grooves 4a, 4b are provided at equal intervals in the circumferential direction, and steps 5a, 5 are formed by the number of grooves 4a, 4b.
b is set, and the outer peripheral surface thereof is made discontinuous by the steps 5a and 5b, and the same number of small faces 6a and 6b as the number of grooves 4a and 4b are formed in the portions that are not the grooves 4a and 4b. That is, one side surface of the grooves 4a, 4b forms a step 5a, 5b, and the outside of this step 5a, 5b intersects with one edge 9a, 9b of the facet 6a, 6b, and the other side surface of the groove 4a, 4b. The outside of is facet 6
It intersects with the other edge of a and 6b. Therefore, the edges 9a and 9b extend parallel to the axial direction of the heat collecting drum 10. The small surfaces 6a and 6b are curved surfaces having radii of curvature of the drum large diameter portion 7 and the drum small diameter portion 8, respectively. As an example of a specific configuration of the heat collecting drum 10, for example, a plurality of small surfaces 6 are formed on the outer peripheral surface in advance.
A drum large-diameter part 7 and a drum small-diameter part 8 provided with a and 6b are formed separately and independently, and a suitable number of these drum parts 7 and 8 are arranged in parallel alternately.
The material of the drum large diameter part 7 and the drum small diameter part 8 is, for example, made of a material with high thermal conductivity and strong wear resistance, such as a copper-chromium alloy, and if necessary, cooling channels etc. are provided inside. and melted material 2
The structure shall be such that it can efficiently extract heat from the Reference numeral 11 shown in FIG. 3 is a rotating device for rotating the heat collecting drum 10 at high speed, and this rotating device 11 is composed of an electric motor, a transmission, and other well-known equipment. The rotating device 11 is connected to the shaft 10a of the heat collecting drum 10. In this way, the circumferential speed of the small surfaces 6a and 6b provided on the outer circumferential surface of the heat collecting drum 10 is controlled by the rotating device 11 at high and low speeds. A box body 22 is installed below the heat collecting drum 10, and inside the box body 22, particles that have been scattered and peeled off from the small surfaces 6a and 6b of the drum large diameter portion 7 and the drum small diameter portion 8 of the heat collecting drum 10 are placed. Foil pieces 23 are accumulated and accommodated. 24
is a wiper for wiping away the foil pieces 23 that are not scattered and peeled off by the centrifugal force of the heat collecting drum 10 and remain attached to the small surfaces 6a and 6b. Further, 13 shown in FIGS. 3 and 4 is a melting device. The melting device 13 consists of a melting tank 17 made of a refractory material such as graphite or quartz, wrought iron, or other material to make a crucible, and a heating element 18 wound around the melting tank 17. It is arranged above the heat collecting drum 10. A nozzle 12 having an opening extending in the axial direction of the heat collecting drum 10 is provided at the lower part of the melting tank 17, and the molten material 2 such as aluminum alloy accommodated in the melting tank 17 is passed through the nozzle 12 into a belt shape. This flow is continuously supplied to the outer peripheral surface of the heat collecting drum 10. 19 is a gas supply source and melting tank 17 (not shown)
It is a communication pipe that communicates with the gas supply source.
Air or an inert gas such as argon is supplied. A thermometer 21 detects the temperature of the molten material 2. Next, the effect will be explained. First, the molten material 2 is stored in the melting device 13.
For example, molten material 2 melted in a melting furnace (not shown)
is housed in the melting tank 17 and heated by the heating element 18 to maintain the melted material 2 at a predetermined temperature at all times. The temperature of the molten material 2 is automatically controlled by a temperature control device (not shown), but the operator can visually check the temperature at that time using the thermometer 21. Then, atmospheric air or argon gas having a constant pressure is supplied from a gas supply source (not shown) into the melting tank 17 via the communication pipe 19, and a predetermined pressure is applied to the molten material 2, which flows out from the nozzle 12 in a band shape. let 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 is continuously distributed in a band shape on the outer peripheral surfaces of the drum large diameter section 7 and the drum small diameter section 8 within a range slightly wider than the supply length of the molten material 2. Contact. At this time, as the heat collecting drum 10 rotates, the molten material 2 is spread out in a plane on the upper surfaces of the drum large diameter section 7 and the drum small diameter section 8. The molten material 2 on the upper surfaces of both drum parts 7 and 8 is transferred to the heat collecting drum 1.
In the width direction of 0, the drum large diameter part 7 and the drum small diameter part 8
Furthermore, in the circumferential direction of the heat collecting drum 10, it is cut by the difference in height between the steps 5a and 5b set by the grooves 4a and 4b. As a result, pieces of molten material cut to a certain length L and width T, respectively, are placed on a large number of facets 6a and 6b discontinuously formed by steps 5a and 5b.
That is, each foil piece 23 is attached and formed. The size of the foil piece 23 (length L x width T x thickness t) is such that its width T is the same as the thickness T of the drum large diameter section 7 and the drum small diameter section 8, and its length L and the thickness t is the circumferential speed of the heat collecting drum 10,
Since it is determined by the flow rate of the molten material 2, its viscosity, etc., these must be set in advance to desired dimensions and suitable manufacturing conditions. The foil pieces 23 attached to the small surfaces 6a and 6b of the drum large-diameter portion 7 and the drum small-diameter portion 8 are respectively deprived of heat by the heat-collecting drum 10 and solidify in part or in whole. Due to the centrifugal force accompanying the rotation, the particles are separated from the respective facets 6a and 6b and scattered. And the foil piece 23 in flight,
It is further cooled by the surrounding atmosphere and completely solidified, thus producing a predetermined foil piece 23. Therefore, the drum large diameter portion 7 and the drum small diameter portion 8 that exist within the range where the molten material 2 is supplied
The number of foil pieces 23 can be manufactured at one time. Since the foil pieces 23 can be manufactured continuously as described above, the foil pieces 23
The production efficiency can be significantly increased. Moreover, all of the molten material 2 supplied to the heat collecting drum 10 can be made into the foil pieces 23. Note that even if foil pieces 23 that do not scatter and peel off due to the centrifugal force of the heat collecting drum 10 occur, the wiper 2
By the wiping action of 4, the foil piece 23 can be reliably peeled off from each facet 6a, 6b. The foil piece 23 wiped off by the wiper 24 is
Similar to the foil pieces 23 that have naturally scattered and peeled off, the box body 22
deposited within. Next, the results of experiments conducted based on this example will be shown. A Material and dimensional specifications of the heat collection drum 10

【table】

【table】 B Experimental conditions

[Table] C Experiment results (1) In experiment 1, length L = 1.2 mm, width T = 1.2
mm, thickness t = 30 to 40 micron foil piece 23 is 48
Kg/hour obtained. Incidentally, the foil piece 23 obtained when the molten material 2 was fed linearly with a diameter of 0.5 mm was 4 kg/hour. Note that the weight of one foil piece 23 is approximately 0.016 mg. (2) In Experiment 2, length L = 1.1 to 1.3 mm, width T =
1.2mm, thickness t=30-35 microns foil piece 23
was obtained at 68/hour. As is clear from these experimental results, according to the present invention, not only can foil pieces 23 with a small area be manufactured, but also a large number of foil pieces 23 can be manufactured at one time. Furthermore, since the opening of the nozzle 12 is wide, there is no fear that the nozzle 12 will become clogged, and it is possible to provide a foil piece manufacturing apparatus that is easy to handle and has fewer failures. The opening of the nozzle 12 has a length of 1 mm.
The width is preferably about 0.1 mm to 50 mm, but it may be longer, and the width is preferably about 0.1 mm to 5 mm, but the dimensions are not limited to those shown in this embodiment. Furthermore,
The shape of the opening of the nozzle 12 is not limited to a rectangular shape, and may have a shape in which the gap in the middle part is narrower than the gap in both ends. In addition, the small surface 6
Of course, a and 6b may be provided only on either the drum large diameter section 7 or the drum small diameter section 8. As the molten material 2, other than this embodiment, for example, an alloy having copper or nickel as a base metal, iron, an amorphous alloy, and various other materials can be used. 9 to 11 show a second embodiment of the invention. In this embodiment, the small surfaces 6a and 6b of the drum large diameter portion 7 and the drum small diameter portion 8 are formed as inclined planes that become higher from the front side to the rear side in the rotational direction of the heat collecting drum 10. That is, the outer circumferential surfaces of the drum large-diameter portion 7 and the drum small-diameter portion 8 are provided with V-shaped grooves 4a extending parallel to the axial direction of the heat collecting drum 10, as shown enlarged in FIGS. 10 and 11. , 4b are provided at equal intervals in the circumferential direction, and one side surface of these grooves 4a, 4b is formed into a step 5.
a and 5b, and the other side surface is directly made into small surfaces 6a and 6b. Therefore, the outside of the steps 5a, 5b intersects with one edge 9a, 9b of the facets 6a, 6b, and the inside of the steps 5a, 5b intersects with the facets 6a, 6b.
intersects directly with the other edge of The other configurations and operations are similar to those of the embodiment described above, and even with this configuration, the same effects as those of the embodiment described above can be obtained. In addition, the heat collecting drum 10
The drum large diameter part 7 and the drum small diameter part 8 are manufactured separately and independently, and these two drum parts 7, 8
Alternatively, instead of forming both the drum parts 7 and 8 separately as described above, the drum parts 7 and 8 can be formed by rolling or the like. 8 may be integrally molded. As explained above, according to this invention,
A heat-collecting drum formed by alternately arranging an appropriate number of large-diameter drum parts and small-diameter drum parts in parallel is rotated at high speed, and molten material is continuously supplied in the form of a band from above to the outer peripheral surface of the heat-collecting drum. This makes it possible to produce foil pieces directly from the molten material. Moreover, it is not only possible to manufacture foil pieces at once only in the number of the large-diameter and small-diameter parts of the drum that have facets for forming the foil pieces within the range where the molten material is supplied. This foil piece manufacturing process can be performed continuously. Furthermore, since the opening of the nozzle can be made large, there is no fear that the opening will become clogged. Furthermore, according to the present invention, the simple structure includes a heat collecting drum, a rotating device for rotating the drum at high speed, and a melting device for continuously supplying the melted material in the form of a band to the heat collecting drum. However, as described above, it is possible to provide a foil piece manufacturing apparatus with high production efficiency.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the outline of a filament manufacturing apparatus as a prior art, and FIG.
3 to 8 show an embodiment of the present invention, FIG. 3 is a front view schematically showing the device, and FIG. 4 is a side view schematically showing the device, and FIG. Figure 5 is an enlarged perspective view of the main parts of the heat collection drum, Figure 6
The figure is an enlarged cross-sectional view taken along the line -- of FIG. 3, FIG. 7 is an explanatory diagram of the heat collecting drum, FIG. 8 is a diagram showing a foil piece, and FIGS. 9 to 11 show a second embodiment of the present invention. FIG. 9 is a side view schematically showing the device;
Figure 10 is an enlarged perspective view of the main parts of the heat collection drum, Figure 11
The figure is also an enlarged side view of the main part. 2 is a melting material, 4a, 4b are grooves, 5a, 5b are steps, 6a, 6b are facets, 7 is a large diameter portion of the drum, 8 is a small diameter portion of the drum, 9a, 9b are edges, 10 is a heat collecting drum, 11 12 is a rotating device, 12 is a nozzle, 13 is a melting device, 17 is a melting tank, 18 is a heating element, 19 is a communicating tube, 22 is a box, 23 is a foil piece, and 24 is a wiper.

Claims (1)

[Claims] 1. An appropriate number of drum large diameter parts and drum small diameter parts smaller in diameter than the drum large diameter parts are alternately arranged in parallel,
and a heat collecting drum having a large number of small surfaces discontinuously formed by stages on the outer peripheral surfaces of the large diameter portion of the drum and the small diameter portion of the drum, and for rotating the heat collecting drum at a high speed. a rotating device, and a nozzle extending in the axial direction of the heat collecting drum, and
A foil piece manufacturing apparatus comprising: a melting device that flows out a molten material in a band form from the nozzle and continuously supplies the molten material to the outer peripheral surface of a heat collecting drum. 2. The step is formed by a groove extending parallel to the axial direction of the heat collecting drum, and the small surface is set in a portion excluding the groove, and the small surface forms a curved surface. The foil piece manufacturing device according to scope 1. 3. The step is formed on one side of a V-shaped groove extending parallel to the axial direction of the heat collecting drum, and the small surface is formed on the other side of this groove, and this small surface is used for collecting heat. 2. The foil piece manufacturing apparatus according to claim 1, wherein the foil piece manufacturing apparatus has an inclined plane that becomes higher from the front side to the rear side in the rotational direction of the drum.