JP2011006748A - Briquette molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a briquette molding apparatus which can obtain a briquette having a prescribed density under low pressure.SOLUTION: The briquette molding apparatus 1 is provided with a molding die with a chamber 11 formed therein, into which an aluminum material P as a raw material is charged, and a movable pressurizing body with a pressurizing face formed thereto, which progresses into the chamber and compresses the aluminum material P so as to mold a briquette. Further, the movable pressurizing body includes: a main pressurizing body 21; and a sub-pressurizing body 31 compressing the aluminum material after the start of the compression by the main pressurizing body 21. The main pressurizing body 21 is formed as a piston in which the outer diameter in the pressurizing face 21A is equal to the inside diameter of the chamber 11, and the sub-pressurizing body 31 is formed as a piercing body in which the outer diameter of the pressurizing face is smaller than the inside diameter of the chamber 11, and further having a tapered top part at the front end part in the progressing direction.

Description

  The present invention relates to a briquette forming apparatus that compresses a raw material such as metal to form a briquette.

  In a steel waste melting furnace, a metal material such as aluminum is often put into the furnace for the purpose of deoxidizing and desiliconizing molten iron. As the aluminum material, a waste aluminum material that has been delacquered by heat treatment using a rotary kiln or the like is used. These aluminum materials are in the form of scales and powders after delacquering, and even if they are put into the melting furnace, they are only floated and deposited on the upper surface of the molten iron, and are not easily immersed in the upper surface of the molten iron. As a result, the molten iron is not sufficiently deoxidized and desiliconized. Therefore, the delacquered aluminum material is densified into a briquette (solid body) having a grain shape or the like to make it easy to immerse into the upper surface of the molten iron.

  The briquette is molded by being compressed by a piston from one direction after putting metal materials such as crushed waste metal and cutting scraps that have been delacquered into the chamber of the molding die of the briquette molding apparatus.

  Patent Documents 1 to 3 disclose apparatuses for forming briquettes by compressing metal raw materials and the like.

  In the briquette forming apparatus of Patent Document 1, a flocculent aggregate of ground chips as a metal material is put into a chamber of a mold and compressed from one direction by a press (piston) that enters the chamber, and then the briquette. Is manufactured.

  The briquette manufacturing apparatus of Patent Document 2 includes a cylindrical compression ring and a rotating mold that is eccentric with respect to the compression ring in the compression ring. The rotary mold has an upper portion spaced from the inner peripheral surface of the compression ring and a lower portion in contact with the inner peripheral surface. Four molding recesses are formed at equal intervals in the circumferential direction on the outer peripheral surface of the rotating mold. In addition, square cylindrical guide members are provided on both sides of the molding recess in a state of being urged outward in the radial direction of the rotary mold by a spring, and the distal ends of the guide members are always attached to the compression ring. It is maintained in contact with the inner peripheral surface.

  In the briquette manufacturing apparatus having such a configuration, when the molding recess is in the uppermost position, that is, when the molding recess is open upward, the molding recess and the guide member are formed. Metal material is thrown into the space to be formed. When the rotating mold rotates after the metal material is charged, the distance between the outer peripheral surface of the rotating mold and the inner peripheral surface of the compression ring gradually decreases, and the guide member follows the inner peripheral surface of the compression ring. It is pressed and displaced radially inward against the biasing force of the spring. Accordingly, the volume of the space filled with the metal material is gradually reduced, and the metal material is compressed in the radial direction of the rotating mold. As a result of the metal material being compressed in this way, briquettes are formed.

  The briquette manufacturing apparatus of Patent Document 3 compresses waste together with bentonite-type binders to form briquettes. In the briquette manufacturing apparatus, first, a vertical slide body (piston) compresses a mixture of waste and caking material supplied to a feeding (supply) box from one side. Next, a briquette is shape | molded when a horizontal pushing slide body compresses the said mixture in the direction orthogonal to the compression direction by the said vertical direction slide body (piston).

JP 2005-298946 A JP-A-2005-82811 JP 50-38678 A

  However, in the briquette forming apparatus disclosed in Patent Documents 1 to 3, the briquette is formed by compressing the material from one direction by a member such as a piston. That is, since the material is compressed by a single pressing surface from the beginning to the end with an equal area, it is necessary to compress the material at a very high pressure in order to solidify the material to a predetermined density. This leads to the solidification of the molding die and the increase in the required energy.

  In view of such circumstances, an object of the present invention is to provide a briquette forming apparatus capable of obtaining briquettes having a predetermined density with a low pressure.

  A briquette molding apparatus according to the present invention includes a molding die in which a chamber into which raw materials are charged is formed, and a movable pressing body in which a pressing surface that enters the chamber and compresses the raw materials to form briquettes is formed. And.

  In such a briquette molding apparatus, in the present invention, the movable pressurizing body includes a main pressurizing body and a sub-pressurizing body that compresses the raw material after starting compression by the main pressurizing body. The body is formed as a piston whose outer diameter of the pressure surface of the main pressure body is equal to the inner diameter of the chamber, and the auxiliary pressure body has an outer diameter at the pressure surface of the auxiliary pressure body that is greater than the inner diameter of the chamber. And is formed as a piercing body having a tapered top at the front end in the approach direction.

  In such a briquette forming apparatus, when a briquette having a predetermined density is formed, the main pressurizing body that compresses the raw material in the chamber is stopped in a state where the applied pressure is maintained as it is before the density of the raw material reaches the predetermined density. To do. Then, after compression by the main pressurizing body, the sub pressurizing body whose outer diameter of the pressurizing surface is smaller than the inner diameter of the chamber and whose front end has a tapered shape pierces the raw material. As a result, the raw material is further compressed by the volume stabbed by the sub-pressurized body, and the briquette having the predetermined density is formed.

  It is preferable that the main pressurizing body and the sub-pressurizing body enter the chamber in directions opposite to each other. In this way, the main pressurizer and the subpressurizer are moved into the chamber in the opposite direction to each other, so that the main pressurizer is moved out of the chamber after briquette forming is completed, that is, after compression of the raw materials is completed. Then, the sub-pressurizer is further moved into the chamber, whereby the briquette can be pushed out of the chamber by the sub-pressurizer.

  The molding die is preferably formed by arranging a plurality of chambers. Thereby, since a briquette can be shape | molded simultaneously in a some chamber, the manufacturing efficiency of a briquette can be improved.

  As described above, in the present invention, the main pressurizing body compresses the raw material to a density lower than a predetermined density, and after the compression by the main pressurizing body is started, the sub-pressurizing body compresses the raw material to the predetermined density. As described above, depending on the main pressurized body, the raw material is only compressed to a density lower than a predetermined density as a previous step. Therefore, the pressure required for the compression by the main pressurized body is compressed to the predetermined density at a time. Compared to the case, it is lower. In addition, since the auxiliary pressure member has an outer diameter smaller than the inner diameter of the chamber and has a tapered front end, the auxiliary pressure member can be easily pierced into the raw material compressed by the main pressure member. it can. Therefore, it is possible to form a high-density briquette without compressing the raw material with a very high pressure. As a result, the driving source of the molding apparatus does not require a high output as in the prior art, and energy consumption and cost can be reduced. Furthermore, the apparatus can be miniaturized.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a longitudinal sectional view of the briquette forming apparatus according to the present embodiment. This figure shows a cross section at the position of a chamber to be described later to which a metal material as a raw material is supplied. In the figure, an operation toward compression of an aluminum material as a raw material, which will be described later, is indicated by a solid line arrow, and an operation of returning to the original position after the compression of the aluminum material is indicated by a one-dot chain line arrow. FIG. 2 is a II-II cross-sectional view of the briquette forming apparatus shown in FIG. 1, and shows a cross-sectional view at an intermediate position between a chamber and a main pressurizing body described later.

  As shown in FIG. 1, the briquette molding apparatus 1 includes a fixed mold 10 to which a metal material such as a scale-like / powder-like aluminum material P obtained by crushing a waste aluminum can is supplied as a raw material, The upper pressing device 20 that pressurizes the aluminum material P supplied to the fixed molding die 10 from above, the lower pressing device 30 that pressurizes the aluminum material P from below, and the fixed molding die 10 with aluminum. And a supply device 40 for supplying the material P. In the present invention, the raw materials are not limited to metals, but are intended for various raw materials that require solid briquetting, such as biomass and solid fuel of coal granule powder.

  As shown in FIG. 1, the fixed mold 10 is a highly rigid thick plate member in which a chamber to be described later serving as a pressurizing chamber is formed, and the plate surface is perpendicular to the vertical direction. It is provided as follows. The upper pressure device 20 is attached to the lower surface of the upper fixing plate 50 that extends in parallel with the fixed molding die 10 above the fixed molding die 10. The lower pressurizing device 30 is attached to the upper surface of the base 60 that extends in parallel with the fixed molding die 10 below the fixed molding die 10. The fixed molding die 10 and the upper fixing plate 50 are fixed with a plurality of nuts 80 to a plurality of support columns 70 extending in the vertical direction in a state where they are spaced apart from each other in the vertical direction. Supported and in a fixed position. The supply device 40 is provided at a position adjacent to the upper pressurizing device 20 above the fixed mold 10.

  The fixed mold 10 is formed with a plurality of chambers 11 that open upward and have cylindrical inner surfaces. The chamber 11 allows the aluminum material P to be introduced from above and allows the main pressurizer described later to enter from above. The fixed mold 10 has a hole 12 that penetrates downward at the center position of the bottom of the chamber 11, and a sub-pressurizer described later passes through the hole 12 and enters the chamber from below. You can enter. The inner diameter of the hole 12 is smaller than the inner diameter of the chamber 11. Further, the edge of the bottom surface of the chamber 11 is rounded (see FIGS. 4A to 4C).

  In the present embodiment, as shown in FIG. 2, two in the left-right direction in FIG. 2 (left-right direction in FIG. 1) and two in the up-down direction in FIG. 2 (direction perpendicular to the paper surface in FIG. 1). A total of four chambers 11 are arranged on the upper surface of the fixed mold 10. As described above, in the briquette forming apparatus 1 according to the present embodiment, by forming the plurality of chambers 11 in the fixed mold 10, the briquettes are simultaneously formed in the plurality of chambers 11 to increase the manufacturing efficiency of the briquettes. ing.

  As shown in FIG. 1, the upper pressure device 20 is provided above the fixed mold 10 and enters the chamber 11 to compress the aluminum material P in the chamber 11 from above. A plurality of main pressurizing bodies 21, an upper movable body 22 to which the main pressurizing bodies 21 are attached, and the upper movable body 22 to which the upper movable bodies 22 and the main pressurizing body 21 are driven vertically. And an upper drive unit 23 such as a fluid pressure cylinder. The upper drive unit 23 is supported by an upper support 24 attached to the upper fixing plate 50.

  The plurality of main pressurizing bodies 21 have a cylindrical piston shape, and a plurality of main pressurizing bodies 21 are provided corresponding to the respective chambers 11, and are respectively located immediately above the corresponding chambers 11. The main pressurizing body 21 has an outer diameter equal to the inner diameter of the chamber 11, and a lower portion of the main pressurizing body 21 can slide into the chamber 11 as will be described later. Further, the lower end surface of the main pressurizing body 21 forms a pressurizing surface 21A for compressing the aluminum material in the chamber 11, and is formed as a concave curved surface slightly depressed as shown in FIG. (See also FIGS. 4A to 4C).

  The upper movable body 22 to which the main pressurizing body 21 is attached is a high-rigidity plate-like member that extends in parallel with the fixed mold 10, and the main pressurizing body 21 extends downward from the lower surface thereof. The upper drive unit 23 has a fluid pressure cylinder, for example, a hydraulic cylinder 23A provided with a rod 23B that extends downward and reciprocates in the vertical direction. The upper movable body 22 is attached to the lower part of the rod 23B, and the upper movable body 22 and the main pressurizing body 21 are reciprocated in the vertical direction by the drive of the upper drive unit 23.

  The lower pressurizing device 30 provided below the fixed molding die 10 enters a hole 12 of the chamber 11 from below and compresses the aluminum material P in the chamber 11 from below. 31, a lower movable body 32 that supports the auxiliary pressure body 31, a lower movable body 32 to which the lower movable body 32 is attached, and a lower drive unit 33 that drives the auxiliary pressure body 31 in the vertical direction. Have. The lower drive unit 33 is supported by the base 60 via the lower support 34.

  The plurality of sub-pressurization bodies 31 are columnar members each having a tapered conical top formed at the upper end, and a plurality of sub-pressurization bodies 31 are provided corresponding to the respective chambers 11. As shown in FIG. 1, the plurality of sub-pressurizing bodies 31 are located immediately below the hole 12 of the chamber 11 and the upper part thereof penetrates the hole 12 and is accommodated in the hole 12. ing. The auxiliary pressure member 31 has an outer diameter equal to the inner diameter of the hole 12 and is smaller than the inner diameter of the chamber 11. As will be described later, the upper portion of the sub-pressurizing body 31 can enter the chamber 11. In the sub-pressurizing body 31, the top surface at the top and the outer peripheral surface of the cylindrical portion form a pressing surface for compressing the aluminum material P in the chamber 11. The sub-pressurizing body 31 may enter the chamber 11 at a time when the stroke is gradually divided into a plurality of times.

  The lower movable body 32 that supports the sub-pressurizing body 31 is a plate-like member that extends in parallel with the fixed mold 10, and the sub-pressurizing body 31 extends upward from the upper surface thereof. The lower drive unit 33 includes a hydraulic cylinder 33A provided with a rod 33B that extends upward and reciprocates in the vertical direction. The lower movable body 32 is attached to the upper end of the rod 33B, and the lower movable body 32 and the sub-pressurizing body 31 reciprocate in the vertical direction by driving the lower drive unit 33.

  The supply device 40 has a plurality of stock bins 41 for storing the aluminum material P supplied from the outside through the upper end opening, and receives the aluminum material P from the lower end opening of the stock bin 41 at a lower portion of the stock bin 41 to form a chamber. 11, a plurality of supply cups 42 for supplying the aluminum material P, a delivery member 43 for moving the supply cups 42 directly above the chamber 11, and an opening / closing plate for opening or closing the lower end opening of the stock bin 41 44 and an opening / closing drive unit 45 for reciprocating the opening / closing plate 44 between an open position where the opening / closing plate 44 opens the lower end opening of the stock bin 41 and a closed position where the lower end opening is closed. Yes. As shown in FIG. 2, in the present embodiment in which two chambers 11 formed on the left and right are formed in two rows, the stock bin 41, the supply cup 42, and the opening / closing plate 44 correspond to each row. The delivery member 43 is provided in common for both rows.

  The stock bin 41 has a cylindrical body that extends in the vertical direction and opens at the upper and lower ends. As shown in FIG. 1, the stock bin 41 has a movable member 22 formed at the right side of the upper pressurizing device 20. The through hole 22A and the through hole 50A of the upper fixing plate 50 are provided so as to penetrate in the vertical direction. In the present embodiment, two stock bins 41 are provided corresponding to the respective chambers 11 as described above, and are provided immediately above the two supply cups 42 shown in FIG. Yes.

  As shown in FIG. 1, the supply cup 42 is provided below the stock bin 41 and close to the lower end opening. In this embodiment, two supply cups 42 are provided corresponding to each stock bin 41, and as is often seen in FIG. 2, the supply cups 42 are arranged on the upper side and the lower side in FIG. It is located to the right of the chamber 11 at a position corresponding to each chamber 11. The supply cup 42 has a conical cylindrical shape whose diameter is expanded upward, and is open upward and downward. As can be seen in FIG. 1, the supply cup 42 is formed between the lower end of the stock bin 41 and the upper surface of the fixed mold 10. It is formed with a height dimension substantially equal to the distance between them. The diameter of the upper end opening of the supply cup 42 is equal to the diameter of the lower end opening of the stock bin, and the diameter of the lower end opening of the supply cup 43 is equal to the diameter of the upper end opening of the chamber 11. In the present embodiment, the supply cup 42 is formed to have a volume twice that of the chamber 11.

  The delivery member 43 is an arm-shaped member extending in the left-right direction in FIG. 1, and the left end is branched and connected to the side surface of each supply cup 42 as shown in FIG. 2. The delivery member 43 is reciprocated in the left-right direction by a drive unit (not shown), and simultaneously moves the two supply cups 42 in the left-right direction by the same distance. As will be described later, the delivery member 43 sequentially moves the supply cup 42 from the position immediately below the stock bin 41 to the position directly above the two chambers 11 and then returns to the position immediately below the stock bin 41 again.

  The opening / closing plate 44 is located between the lower end opening of the stock bin 41 and the upper end opening of the supply cup 42, and is driven in the left-right direction in FIG. 1 by the opening / closing drive unit 45 to open the lower end opening of the stock bin 41. A reciprocating motion is possible between an open position for closing and a closed position for closing the lower end opening.

  Next, briquette molding by the briquette molding apparatus 1 will be described. First, in the present embodiment, the briquette is formed by a raw material charging step of charging the aluminum material P into the chamber 11, a compression step of compressing the aluminum material P in the chamber 11 to form a briquette, This is performed by three steps of a briquette removing step for taking out from the chamber 11. Hereinafter, these three steps will be described in order.

<Raw material input process>
FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2 and is a view for explaining a raw material charging step. Here, the introduction of the aluminum material P as a raw material into the lower chamber 11 in FIG. 2 will be described. The introduction of the aluminum material P into the upper chamber 11 in FIG. 2 is the same as in the case of the lower chamber 11, so the description thereof is omitted here.

  First, the aluminum material P is supplied to the two stock bins 41 and stored in the stock bins 41. At this time, each of the two supply cups 42 is disposed immediately below the corresponding stock bin 41, and the opening / closing plate 44 is retracted to a position where the lower end opening of the stock bin 41 is opened, that is, an open position. The stock bin 41 and the supply cup 42 are in communication. Therefore, the aluminum material P supplied to the stock bin 41 is supplied through the lower end opening of the stock bin 41 in a state where the lower end opening of the supply cup 42 is closed in contact with the upper surface of the fixed mold 10. Since it is also supplied into the cup 42, the aluminum material P is stored in both the stock bin 41 and the supply cup 42 as shown in FIG. 1. As a result, each supply cup 42 is filled with an aluminum material P having a volume equal to the sum of the volumes of the two chambers 11.

  Next, the opening / closing drive unit 45 advances the opening / closing plate 44 to a position where the lower end opening of the stock bin 41 is closed, that is, a closed position. As a result, as shown in FIG. 3, the gap between the stock bin 41 and the supply cup 42 is blocked.

  Next, the delivery member 43 is advanced to the left in FIG. 3 to bring the supply cup 42 </ b> A to a position directly above the right chamber 11 as indicated by a two-dot chain line. As a result, the aluminum material P in the supply cup 42 is introduced into the right chamber 11 through the lower end opening of the supply cup 42. When the charging of the aluminum material P into the right chamber 11 is completed, the chamber 11 is filled with the aluminum material P up to the upper opening position of the chamber 11 as seen in FIG. After the introduction of the aluminum material P into the right chamber 11, the aluminum material P in the supply cup 42 is halved as shown in FIG. 3, and the volume in the supply cup 42 is equal to the volume of one chamber 11. The aluminum material P remains.

  Further, the delivery member 43 is advanced to the left in FIG. 3 to bring the supply cup 42 to a position directly above the chamber 11 on the left side, as indicated by a two-dot chain line. As a result, the aluminum material P in the supply cup 42 is introduced into the left chamber 11 through the lower end opening of the supply cup 42. Therefore, when the aluminum material P is completely charged into the left chamber 11, the chamber 11 is filled with the aluminum material P up to the upper opening position of the chamber 11 as shown in FIG. The inside of 42 becomes empty.

  When the introduction of the aluminum material P into both the chambers 11 is completed in this way, the delivery member 43 is retracted to the right, and the supply cup 42 is brought under the corresponding stock bin 41. Then, when the opening / closing plate 44 is brought to the open position, the aluminum material P in the stock bin 41 is refilled into the supply cup 42 in preparation for the next raw material charging step, and the raw material charging step is completed.

<Compression process>
4A and 4B are diagrams for explaining the compression process, in which FIG. 4A is a state before the aluminum material P is compressed, that is, before the compression process is started, and FIG. The state compressed by the body 21, (C) is a view showing a state where the aluminum material P is further compressed by the sub-pressurized body 31. 4A to 4C show the compression of the aluminum material P in one of the four chambers 11. The compression process is performed in the same manner in all four chambers 11.

  When the above-described raw material charging step is completed, as shown in FIG. 4A, the main pressurizing body 21 has not yet entered the chamber 11, and the sub-pressurizing body 31 is tapered by 110. Only the top of the shape projects into the chamber 11 from below. When the compression process is started, first, only the main pressurizing body 21 is moved downward by driving the upper drive unit 23, and the main pressurizing body 21 is moved into the chamber as shown in FIG. 4B. 11 enters from above. As a result, the aluminum material P in the chamber 11 is compressed from above by the pressurizing surface 21 </ b> A that is the lower end surface of the main pressurizing body 21.

  The main pressurizing body 21 stops in a state where the pressure is maintained as it is before the density of the aluminum material P reaches a predetermined density of the briquette as a finished product. Thus, depending on the main pressurizing body 21, the aluminum material P is only compressed to a density lower than the predetermined density as a pre-stage where the sub-pressurizing body 31 is compressed later. The pressure required for compression by the pressure body 21 may be lower than in the case where the pressure is compressed to a predetermined density at a time as in the prior art.

  In the present embodiment, the main pressurizing body 21 compresses the aluminum material P with a pressure of 100 MPa, for example. In the conventional apparatus, the pressure for compressing the aluminum material at the time of briquetting is about 200 MPa, for example. Compared with this, the pressure by the main pressurizing body 21 of the present embodiment is significantly low.

  After the aluminum material P is compressed by the main pressurizing body 21, the sub-pressurizing body 31 is moved upward by the driving of the lower drive unit 33, and as shown in FIG. The upper end portion of 31 enters the chamber 11 from below and pierces the aluminum material P. As a result, the aluminum material P in the chamber 11 is compressed by the outer surface of the portion of the sub-pressurized body 31 that has entered the chamber 11, that is, the top surface of the sub-pressurized body 31 and the outer peripheral surface of the cylindrical portion. The As a result, the aluminum material P compressed by the main pressurizing body 21 is further compressed by the volume stabbed by the sub-pressurizing body 31, and a briquette having a predetermined density is formed.

  The briquette obtained by compressing with the sub-pressurized body 31 is such that the scale-like aluminum material is directed along the surface of the sub-pressurized body 31 with the vertical component as seen in FIG. In the briquette obtained by simply compressing on the piston surface, the scaly aluminum material is formed in the longitudinal direction component as compared with the scaly aluminum material which tends to collapse in the lateral direction and particularly on the lower surface. It becomes difficult to collapse.

  In the present embodiment, since the sub-pressurizing body 31 has an outer diameter of the pressurizing surface smaller than the inner diameter of the chamber and has a tapered front end, the sub-pressurizing body is applied to the aluminum material P compressed by the main pressurizing body 21. 31 can be pierced easily. Therefore, it is not necessary to increase the pressure at the time of compression by the sub-pressurizing body 31. In the present embodiment, the sub-pressurizing body 31 has a pressure slightly higher than the pressure required for the compression by the main pressurizing body 21. For example, the aluminum material P is compressed at a pressure of about 110 MPa. That is, the pressure required for compression by the sub-pressurizing body 31 is significantly lower than the pressure in the conventional apparatus, as in the case of the main pressurizing body 21.

<Bricket removal process>
When the formation of the briquette by compression by the main pressurizing body 21 and the sub pressurizing body 31 is completed, first, the main pressurizing body 21 is driven by the upper drive unit 23 and moved upward to be brought out of the chamber 11. Return to the position as shown in FIG. Next, the sub-pressurizing body 31 is driven by the lower driving unit 33 and moves upward to further enter the chamber 11. As a result, the briquette is pushed up from below by the sub-pressurizing body 31 and finally pushed out of the chamber 11. The briquette pushed out of the chamber 11 is taken out of the apparatus by a take-out member (not shown) that moves in a direction orthogonal to the supply cup 42 along the upper surface of the fixed mold 10. In this way, the finished briquette is taken out, and the briquette taking out process is completed. In this embodiment, since the main pressurizing body 21 and the sub-pressurizing body 31 enter the chamber 11 in a direction facing each other, the briquette is pushed out of the chamber by the sub-pressurizing body 31 as described above, and is taken out. The member can be easily taken out.

  In the present embodiment, in the briquette removing step, the main pressure member 21 is moved upward and brought out of the chamber 11 and then the auxiliary pressure member 31 is moved upward. The upward movement of the pressure body 21 and the auxiliary pressure body 31 may be started simultaneously.

  FIG. 5 is a longitudinal sectional view of the finished briquette Q. As shown in the figure, the briquette Q has a substantially cylindrical outer shape, and the upper surface is formed as a convex curved surface by being pressed on the pressing surface 21A which is the lower end surface of the main pressing body 21, and A hole Q1 having the same shape as the tip of the sub-pressurizing body 31 is opened downward by the sub-pressurizing body 13 being pierced from below. In this embodiment, since the upper surface of the briquette Q is formed as a convex curved surface, even if the length of compression from below by the sub-pressurizing body 31 (the length dimension H1 of the hole Q1 in FIG. 5) is increased, A sufficiently large dimension (dimension H2 in FIG. 5) from the upper surface of briquette Q to the upper end of hole Q1 can be secured. Therefore, the high-density briquette Q can be formed by sufficient compression by the sub-pressurizing body 31 while ensuring the strength of the briquette Q.

  In the present embodiment, since the edge of the bottom surface of the chamber 11 is rounded, the bottom surface of the briquette Q that is compressed and molded in the chamber 11 as shown in FIG. The edge portion Q2 also has a rounded shape. Therefore, when the briquette Q is taken out from the chamber 11, the friction between the edge Q2 of the briquette Q and the inner surface of the chamber 11 is reduced, and the briquette Q can be taken out easily. Further, after taking out the briquette Q, it is possible to prevent the edge Q2 from being broken or chipped by an external impact or the like during handling.

  As described above, in the present embodiment, the aluminum material P is sequentially compressed using the main pressurizing body 21 and the sub-pressurizing body 31, so that the aluminum material P has a high density without being compressed with a very high force. Briquettes can be formed. As a result, the drive source of the briquetting apparatus 1 does not require a high output for compression at a time as in the conventional case, and energy consumption and cost can be reduced. Furthermore, the apparatus can be miniaturized.

  In the present embodiment, the main pressurizing body and the sub-pressurizing body enter the chamber from the direction opposite to each other to compress the aluminum material. It is not limited to this. For example, the main pressurizing body and the sub-pressurizing body may enter the chamber from a direction perpendicular to each other. In this case, for example, the main pressurizing body can enter the chamber from above and the sub-pressurizing body can enter the chamber in the horizontal direction.

  Further, in the present embodiment, the compression of the sub-pressurization body is started after the compression by the main pressurization body is completed, but instead, after the compression of the main pressurization body is started, It is good also as starting compression of a sub-pressurization body before completion of compression.

  In the apparatus of the present invention, there are cases where a briquette can be made by operating only the main pressurizing body without operating the sub-pressurizing body. If the briquette may have a lower density than the briquetting according to the present invention, it may be taken out as a briquette at the time of compression by the main pressure member. At this time, the sub-pressurizer functions as a member that pushes the briquette out of the chamber for taking out the briquette.

It is a longitudinal cross-sectional view of the briquette molding apparatus which concerns on embodiment. It is II-II sectional drawing of the briquette molding apparatus shown by FIG. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a figure for performing a compression process, (A) is a state before the compression process is started, (B) is a state in which an aluminum material is compressed by a main pressurizing body, (C) is a state in which an aluminum material is further sub It is a figure which shows the state compressed by the pressurization body. It is a longitudinal cross-sectional view of the briquette which is a finished product.

DESCRIPTION OF SYMBOLS 1 Briquette molding apparatus 10 Fixed molding die 11 Chamber 21 Main pressurization body 21A Pressurization surface 31 Sub pressurization body P Aluminum material (raw material)
Q Briquette

Claims (3)

  In a briquette molding apparatus comprising: a molding die in which a chamber into which raw materials are charged is formed; and a movable pressurization body in which a pressing surface that enters the chamber and compresses the raw materials to form briquettes is formed. The movable pressurization body includes a main pressurization body and a sub-pressurization body that compresses the raw material after starting compression by the main pressurization body. The outer surface of the pressure surface is formed as a piston equal to the inner diameter of the chamber, and the auxiliary pressure member has an outer diameter on the pressure surface of the auxiliary pressure member that is smaller than the inner diameter of the chamber. A briquette forming apparatus, characterized in that it is formed as a piercing body having a tapered top.   The briquette forming apparatus according to claim 1, wherein the main pressurizing body and the sub-pressurizing body enter the chamber in a direction facing each other.   3. The briquette molding apparatus according to claim 1, wherein the molding die is formed by arranging a plurality of chambers.

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