A processing device for processing graphite crucible

Abstract

The invention provides a processing device for processing a graphite crucible, and relates to the technical field of graphite crucible manufacturing, comprising: a press, wherein a rotating driving component is installed above the interior of the press, and a crucible outer mold is fixedly connected above a lifting platform inside the press. Compared with a traditional graphite crucible pressing and molding device with a vibrating function, the device volume is reduced, no additional driving component is required, the cost is reduced, and maintenance is more convenient. The internal vibrating setting is used to avoid the situation where graphite powder blocks a transmission structure and a bearing to cause a fault, and the problem that it is difficult to control the knocking force and achieve the best effect by vibrating the crucible pressing mold with an external force is solved. In some graphite crucible pressing and molding devices with a vibrating function, the installation of the vibrating device will increase the volume of the mold, and it is easy to be blocked by graphite powder and cause a fault, and an external driving component and power supply lines are required, which increases the manufacturing cost of the equipment and the complexity of maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite crucible manufacturing, and particularly to a processing device for processing graphite crucibles. Background Art

[0002] Graphite crucibles are processed from materials such as clay, graphite, and silica through processes such as crushing, sieving, impurity removal, and water washing into graphite powder of a certain particle size, and are formed by pressing with a graphite crucible mold. In the traditional process of forming a graphite crucible by pressing, pressure is applied to the upper mold and the lower mold through a press or other equipment, so that the graphite powder is formed into a crucible under the action of pressure.

[0003] In the traditional operation of forming a graphite crucible by pressing, there are gaps between the graphite powders when the molds are butted, resulting in gaps inside the crucible after pressing, which affects the quality of the graphite crucible. To solve this situation, in some graphite crucible forming operations by pressing, during the pressing process, the outside of the crucible needs to be knocked with tools, so that the graphite powder inside the mold is distributed more densely under the vibration effect, reducing the generation of voids inside the graphite powder. However, the method of vibrating the crucible pressing mold by external force is not easy to control the knocking force and is not easy to achieve the best effect. In some graphite crucible forming equipment with a vibrating function, the installation of the vibrating equipment will increase the volume of the mold, and is easily blocked by graphite powder, causing failures. An external driving part and power supply wires also need to be arranged, increasing the manufacturing cost and maintenance complexity of the equipment. Summary of the Invention

[0004] The present invention discloses a processing device for processing graphite crucibles to solve the problems that the method of vibrating the crucible pressing mold by external force is not easy to control the knocking force and is not easy to achieve the best effect, in some graphite crucible forming equipment with a vibrating function, the installation of the vibrating equipment will increase the volume of the mold, and is easily blocked by graphite powder, causing failures, and an external driving part and power supply wires also need to be arranged, increasing the manufacturing cost and maintenance complexity of the equipment.

[0005] In a first aspect of the present disclosure, a processing device for processing a graphite crucible is provided, specifically comprising: a press, a rotary drive member is installed above the interior of the press, a crucible outer mold is fixedly connected above the lifting platform inside the press, a motor receiving plate is fixedly connected below the rotary drive member, an inner mold connecting seat is installed below the motor receiving plate by bolts, a crucible inner mold is installed below the inner mold connecting seat, a guide cylinder is fixedly connected below the inner mold connecting seat, an inner mold guide plate is fixedly connected inside the crucible inner mold, and the guide cylinder vertically penetrates and slides Connect the inner mold guide plate, and two telescopic connecting rods are fixedly connected below the inner mold connecting seat. The telescopic connecting rods vertically penetrate the inner mold guide plate. The lower end of the telescopic connecting rod is fixedly connected to the hinged end shaft. A one-way rotary cylinder is installed on the hinged end shaft through a ratchet pawl mechanism. Six knocking wedges are installed on the one-way rotary cylinder. The inner surface of the knocking wedge is fixedly connected to a wedge guide rod. The wedge guide rod is slidably connected to the one-way rotary cylinder. The outer surface of the wedge guide rod is connected to a knocking force storage top spring. The inner mold of the crucible is fixedly connected to the inner mold wedge teeth. The knocking wedges close to the inside of the crucible inner mold fit the inner mold wedge teeth.

[0006] Furthermore, the guide tube outer shell is connected with a reset spring, the upper end of the reset spring is fixedly connected to the lower surface of the inner mold connection seat, the lower end of the reset spring is fixedly connected to the inner mold guide plate, and the lower end of the guide tube is fixedly sleeved with a limiting convex ring.

[0007] Furthermore, the front and rear ends of the hinged end shaft are respectively fixedly connected with a ratchet ring, and the ratchet ring is provided with six ratchets, the ratchet tips inside the left ratchet ring face counterclockwise, and the ratchet tips inside the right ratchet ring face clockwise.

[0008] Furthermore, the front end and the rear end of the one-way rotary drum are respectively fixedly connected with a rotary drum ratchet, and the inner surface of the rotary drum ratchet is fixedly connected with six ratchets.

[0009] Furthermore, the outward side of the striking wedge is an inclined surface, the inner end of the wedge guide rod is fixedly connected to the limited end block, and the wedge guide rod is perpendicular to the axis of the one-way rotary drum.

[0010] Furthermore, the outer end of the knocking force storage spring is fixedly connected to the side of the knocking wedge facing the one-way rotary cylinder, and the inner end of the knocking force storage spring is fixedly connected to the outer surface of the one-way rotary cylinder.

[0011] Furthermore, inner mold wedge teeth are longitudinally arranged on the left and right sides of the inner wall of the inner mold of the crucible, and the wedge surfaces of the inner mold wedge teeth face inward and upward.

[0012] Furthermore, the bottom center of the crucible outer mold and the press lifting platform are both penetrated with openings, and a discharge push rod is vertically installed at the bottom of the press, and the upper end of the discharge push rod is fixedly connected to a demoulding top platform, and the demoulding top platform is connected to the bottom opening of the crucible outer mold.

[0013] The present invention provides a processing device for processing graphite crucibles, which has the following beneficial effects:

[0014] In the present invention, the pressing die for the graphite powder used for pressing the graphite crucible into shape is improved, and the structure is improved inside and above the inner crucible mold. The inner mold connecting seat is movably connected to the inner crucible mold, and there is a certain distance gap under normal conditions. During the pressing process of the graphite powder, as the inner crucible mold and the outer crucible mold gradually approach, pressure is applied to the inner crucible mold, causing the inner crucible mold to gradually approach the inner mold connecting seat and finally fit and combine into one. During this process, the knocking wedge block located inside the inner crucible mold slides downward along the inner mold wedge teeth arranged longitudinally, and is repeatedly pushed horizontally under the action of the inclined surface of the inner mold wedge teeth, causing the knocking energy storage spring to be compressed and store energy, and pushing the knocking wedge block outward at the moment when the knocking wedge block separates from the inner mold wedge teeth, repeatedly knocking the inner wall of the inner crucible mold, realizing the vibration of the graphite powder inside the mold. By vibrating, the distribution density of the graphite powder is improved. During this process, the vibration of the mold is realized without the drive of an external drive part. Compared with the traditional graphite crucible pressing and forming equipment with a vibration function, the equipment volume is reduced, no additional drive part is required, the cost is reduced, and the maintenance is more convenient. The internal vibration setting is adopted, which can avoid the situation of graphite powder blocking the transmission structure and bearings and causing failures.

[0015] In addition, the knocking wedge block is installed through a one-way rotating cylinder. During the pressing and forming process, when the one-way rotating cylinder and the knocking wedge block approach the bottom of the inner crucible mold, due to the ratchet and pawl transmission between the pawl connecting ring and the rotating cylinder ratchet, the one-way rotating cylinder cannot rotate, causing the knocking wedge block to form friction with the inner mold wedge teeth and horizontally expand and contract under the push of the inclined surface. After the pressing is completed, as the outer crucible mold moves downward, the inner crucible mold separates from the outer crucible mold, and the inner crucible mold separates from the inner mold connecting seat under the thrust of the reset push spring. During the process that the one-way rotating cylinder and the knocking wedge block move away from the bottom of the inner crucible mold, the knocking wedge block contacts the inner mold wedge teeth, causing the one-way rotating cylinder to move upward while driving the knocking wedge block to rotate, so that the inner mold connecting seat, the one-way rotating cylinder, and the inner crucible mold return to the normal position, so that the pressing work of the graphite powder can be carried out continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings:

[0019] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0020] Figure 2Shows the structural schematic diagram inside the crucible inner mold and the crucible outer mold of the present application;

[0021] Figure 3 Shows the structural schematic diagram during the demolding process of the present application;

[0022] Figure 4 Shows the structural schematic diagram of the crucible inner mold and the crucible outer mold of the present application in the pressed state;

[0023] Figure 5 Shows the present application Figure 4 front view structural schematic diagram;

[0024] Figure 6 Shows the structural schematic diagram of the inner mold guide plate of the present application;

[0025] Figure 7 Shows the structural schematic diagram of the bottom of the inner mold connecting seat of the present application;

[0026] Figure 8 Shows the structural schematic diagram inside the one-way rotating cylinder of the present application;

[0027] Figure 9 Shows the present application Figure 5 local enlarged structural schematic diagram at position A in;

[0028] List of reference numerals

[0029] 1. Press; 2. Rotation driving member; 3. Motor adapter plate; 4. Inner mold connecting seat; 401. Guide cylinder; 402. Return push spring; 403. Limit convex ring; 5. Telescopic connecting rod; 501. Hinge end shaft; 502. Pawl connecting ring; 6. One-way rotating cylinder; 601. Rotating cylinder ratchet; 602. Ratchet teeth; 7. Knocking wedge block; 701. Wedge block guide rod; 702. Knocking energy storage top spring; 8. Crucible inner mold; 801. Inner mold ratchet teeth; 802. Inner mold guide plate; 9. Crucible outer mold. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 to 9 :

[0032] The present invention provides a processing device for processing graphite crucibles, comprising: a press 1, a rotary drive member 2 is installed above the interior of the press 1, a crucible outer mold 9 is fixedly connected above the lifting table inside the press 1, a motor connection plate 3 is fixedly connected below the rotary drive member 2, an inner mold connection seat 4 is installed below the motor connection plate 3 through bolts. The bolt connection between the motor connection plate 3 and the inner mold connection seat 4 facilitates the disassembly of the inner mold connection seat 4 for equipment maintenance and repair. A crucible inner mold 8 is installed below the inner mold connection seat 4, a guide cylinder 401 is fixedly connected below the inner mold connection seat 4, an inner mold guide plate 802 is fixedly connected inside the crucible inner mold 8, the guide cylinder 401 vertically penetrates and is slidably connected to the inner mold guide plate 802. Two telescopic connecting rods 5 are fixedly connected below the inner mold connection seat 4, the telescopic connecting rods 5 vertically penetrate the inner mold guide plate 802, the lower end of the telescopic connecting rod 5 is fixedly connected with a hinge end shaft 501, a one-way rotating cylinder 6 is installed outside the hinge end shaft 501 through a ratchet and pawl mechanism, six knocking wedges 7 are installed on the one-way rotating cylinder 6, a wedge guide rod 701 is fixedly connected to the inner surface of the knocking wedge 7, the wedge guide rod 701 is slidably connected to the one-way rotating cylinder 6, a knocking energy storage top spring 702 is sleeved outside the wedge guide rod 701, an inner mold wedge tooth 801 is fixedly connected inside the crucible inner mold 8, and the knocking wedge 7 near the inside of the crucible inner mold 8 is in contact with the inner mold wedge tooth 801; a movable crucible inner mold 8 is provided, the crucible inner mold 8 is movably connected to the inner mold connection seat 4. During the pressing process of the graphite powder, as the crucible inner mold 8 and the crucible outer mold 9 gradually approach, pressure is applied to the crucible inner mold 8, causing the crucible inner mold 8 to gradually approach and finally fit and integrate with the inner mold connection seat 4. During this process, the knocking wedge 7 located inside the crucible inner mold 8 slides downward along the longitudinally arranged inner mold wedge teeth 801, and the knocking wedge 7 is repeatedly pushed horizontally under the action of the inclined surface of the inner mold wedge teeth 801, causing the knocking energy storage top spring 702 to be compressed and store energy, and pushing the knocking wedge 7 outwards instantly when the knocking wedge 7 is separated from the inner mold wedge teeth 801, repeatedly knocking the inner wall of the crucible inner mold 8 to vibrate the graphite powder inside the mold, improving the distribution density of the graphite powder inside the crucible outer mold 9 before pressing, and making the pressing of the crucible tighter.

[0033] By providing the rotation driving member 2, during the pressing process, the inner mold connecting seat 4 and the crucible inner mold 8 are driven to rotate by the rotation driving member 2, so that the outer surface of the crucible inner mold 8 rubs against the graphite powder inside the crucible outer mold 9, which helps the graphite powder to be more evenly distributed in the mold. This can ensure that the density and thickness of each part of the crucible are consistent during the forming process, thereby improving the quality and consistency of the finished product. It also helps to expel the gas in the mold during the pressing process, reduce the pores and defects in the crucible, and further improve its quality and durability. In the embodiment of the present disclosure, the transmission structure and the linkage structure for knocking and vibrating the crucible inner mold 8 are both integrated in the inner mold connecting seat 4 and the crucible inner mold 8, and will not be affected by the rotation of the inner mold connecting seat 4 and the crucible inner mold 8 and thus affect the knocking and vibrating function of the mold.

[0034] In the embodiment of the present disclosure, a return push spring 402 is sleeved outside the guide cylinder 401. The upper end of the return push spring 402 is fixedly connected to the lower surface of the inner mold connecting seat 4, and the lower end of the return push spring 402 is fixedly connected to the inner mold guide plate 802. A limit convex ring 403 is fixedly sleeved at the lower end of the guide cylinder 401. By providing the limit convex ring 403, a limiting effect is achieved to prevent the crucible inner mold 8 from being completely separated from the guide cylinder 401. By providing the return push spring 402, a thrust is applied to the crucible inner mold 8 to keep the crucible inner mold 8 having a certain pre-pressing strength on the graphite powder.

[0035] In the embodiment of the present disclosure, the outer surface of the knocking wedge 7 is an inclined surface. The inner end of the wedge guide rod 701 is fixedly connected with a limit end block, and the wedge guide rod 701 is perpendicular to the axis of the one-way rotating cylinder 6. The outer end of the knocking energy storage spring 702 is fixedly connected to the surface of the knocking wedge 7 facing the one-way rotating cylinder 6, and the inner end of the knocking energy storage spring 702 is fixedly connected to the outer surface of the one-way rotating cylinder 6. Inner mold wedge teeth 801 are longitudinally arranged on the left and right sides of the inner wall of the crucible inner mold 8, and the wedge surface of the inner mold wedge teeth 801 faces upward and inward. Under normal conditions, an outward thrust is applied to the knocking wedge 7 by the knocking energy storage spring 702. When the crucible inner mold 8 and the crucible outer mold 9 gradually approach and pressure is applied to the crucible inner mold 8, the crucible inner mold 8 gradually approaches and finally fits and combines with the inner mold connecting seat 4. During this process, the knocking wedge 7 located inside the crucible inner mold 8 slides downward along the longitudinally arranged inner mold wedge teeth 801, and the knocking wedge 7 is repeatedly pushed horizontally under the action of the inclined surface of the inner mold wedge teeth 801, so that the knocking energy storage spring 702 is compressed to store energy, and the knocking wedge 7 is pushed outward at the moment when the knocking wedge 7 is separated from the inner mold wedge teeth 801, and the inner wall of the crucible inner mold 8 is repeatedly knocked to realize the vibrating function of the mold.

[0036] In the disclosed embodiment, the bottom center of the crucible outer mold 9 and the lifting platform of the press 1 are both penetrated with openings, and a discharge push rod is vertically installed at the bottom of the press 1, and a demoulding top platform is fixedly connected to the upper end of the discharge push rod, and the demoulding top platform is docked with the bottom opening of the crucible outer mold 9; after the crucible is pressed, the push cylinder of the press 1 controls the lifting platform and the crucible outer mold 9 to move downward, and the crucible is separated from the inside of the crucible outer mold 9 through the stationary demoulding top platform to complete the demoulding work.

[0037] Example 2, based on Example 1, the front and rear ends of the hinged end shaft 501 are respectively fixedly connected with a ratchet ring 502, and the ratchet ring 502 is provided with six ratchets, the tip of the ratchet inside the left ratchet ring 502 faces counterclockwise, and the tip of the ratchet inside the right ratchet ring 502 faces clockwise; the front and rear ends of the one-way rotary drum 6 are respectively fixedly connected with a rotary drum ratchet 601, and the inner surface of the rotary drum ratchet 601 is fixedly connected with six ratchet teeth 602, and the ratchet ring 502 cooperates with the rotary drum ratchet 601 to form a ratchet and ratchet transmission mechanism, so that the one-way rotary drum 6 and the knocking wedge 7 are locked and cannot rotate when approaching the bottom of the crucible inner mold 8, and can rotate and interact when the one-way rotary drum 6 and the knocking wedge 7 are away from the bottom of the crucible inner mold 8, so as to avoid the knocking wedge 7 from contacting with the inner mold wedge teeth 801 and getting stuck during the equipment resetting process.

[0038] Working principle of this embodiment: First, add an appropriate amount of graphite powder inside the crucible outer mold 9, start the rotation driving member 2, drive the inner mold connecting seat 4 and the crucible inner mold 8 to rotate through the rotation driving member 2, and then control the press 1 to act. Pull the lifting table and the crucible outer mold 9 upward through the hydraulic cylinder in the press 1. As the crucible outer mold 9 moves upward, the bottom of the crucible inner mold 8 enters the inside of the crucible outer mold 9 and contacts the graphite powder, squeezing the graphite powder. Under the action of the rotation of the crucible inner mold 8, the outer surface of the crucible inner mold 8 rubs against the graphite powder inside the crucible outer mold 9, which helps the graphite powder to be more evenly distributed in the mold. This can ensure that the density and thickness of each part of the crucible remain consistent during the forming process, thereby improving the quality and consistency of the finished product. It also helps to expel the gas inside the mold during the pressing process, reducing the pores and defects in the crucible. During this process, the inner mold connecting seat 4 and the crucible inner mold 8 gradually approach and merge, and the reset push spring 402 is gradually compressed under force. At the same time, the knocking wedge block 7 inside the crucible inner mold 8 gradually approaches the bottom surface of the crucible inner mold 8 and forms a sliding connection with the inner mold wedge teeth 801 arranged longitudinally. Due to the ratchet and pawl transmission between the pawl connecting ring 502 and the rotating cylinder ratchet 601, the one-way rotating cylinder 6 cannot rotate, causing the knocking wedge block 7 to form friction with the inner mold wedge teeth 801 and horizontally expand and contract. Under the action of the inclined surface of the inner mold wedge teeth 801, the knocking wedge block 7 is horizontally pushed, compressing and storing energy in the knocking energy storage spring 702, and pushing the knocking wedge block 7 outward instantly when the knocking wedge block 7 separates from the inner mold wedge teeth 801, repeatedly knocking the inner wall of the crucible inner mold 8 to vibrate the graphite powder inside the mold. Through vibration, the distribution density of the graphite powder in the incompletely pressed state is higher, improving the pressing density of the graphite crucible. After the pressing is completed, control the hydraulic cylinder in the press 1 to push the lifting table downward. As the crucible outer mold 9 moves downward, the crucible inner mold 8 separates from the crucible outer mold 9. The crucible inner mold 8 separates from the inner mold connecting seat 4 under the thrust of the reset push spring 402. When the one-way rotating cylinder 6 and the knocking wedge block 7 move away from the bottom of the crucible inner mold 8, the knocking wedge block 7 contacts the inner mold wedge teeth 801, causing the one-way rotating cylinder 6 to move upward while driving the knocking wedge block 7 to rotate, so as to facilitate the inner mold connecting seat 4, the one-way rotating cylinder 6, and the crucible inner mold 8 to return to their normal positions. As the lifting table and the crucible outer mold 9 continue to move downward, the crucible is pushed out from the inside of the crucible outer mold 9 by the stationary demolding top table, thus completing the demolding work of the graphite crucible pressing.

[0039] In this article, the following points need to be noted:

[0040] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0041] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0042] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A processing device for processing a graphite crucible, comprising: A press machine (1), wherein a rotating drive member (2) is installed at the top of the press machine (1), and a crucible outer mold (9) is fixedly connected to the top of the lifting platform inside the press machine (1), characterized in that a motor receiving plate (3) is fixedly connected to the bottom of the rotating drive member (2), an inner mold connecting seat (4) is installed below the motor receiving plate (3) by bolts, a crucible inner mold (8) is installed below the inner mold connecting seat (4), a guide cylinder (401) is fixedly connected below the inner mold connecting seat (4), an inner mold guide plate (802) is fixedly connected inside the crucible inner mold (8), the guide cylinder (401) vertically penetrates and is slidably connected to the inner mold guide plate (802), and the bottom of the inner mold connecting seat (4) Two telescopic connecting rods (5) are fixedly connected, the telescopic connecting rods (5) vertically penetrate the inner mold guide plate (802), the lower end of the telescopic connecting rod (5) is fixedly connected to a hinged end shaft (501), a one-way rotary cylinder (6) is installed on the outside of the hinged end shaft (501) through a ratchet pawl mechanism, six knocking wedges (7) are installed on the one-way rotary cylinder (6), the inner surface of the knocking wedge (7) is fixedly connected to a wedge guide rod (701), the wedge guide rod (701) is slidably connected to the one-way rotary cylinder (6), the outer surface of the wedge guide rod (701) is connected to a knocking force storage top spring (702), the inner part of the crucible inner mold (8) is fixedly connected to the inner mold wedge teeth (801), the knocking wedge (7) close to the inside of the crucible inner mold (8) is connected to the inner mold. The mold wedge teeth (801) are fitted, the outer sleeve of the guide cylinder (401) is connected with a reset spring (402), the upper end of the reset spring (402) is fixedly connected to the lower surface of the inner mold connecting seat (4), the lower end of the reset spring (402) is fixedly connected to the inner mold guide plate (802), the lower end of the guide cylinder (401) is fixedly sleeved with a limiting convex ring (403), the front end and the rear end of the hinged end shaft (501) are respectively fixedly connected with a ratchet ring (502), the ratchet ring (502) is provided with six ratchets, the tip of the ratchet inside the left ratchet ring (502) faces counterclockwise, the tip of the ratchet inside the right ratchet ring (502) faces clockwise, the front end of the one-way rotating cylinder (6) The first and second ends of the one-way rotary drum (6) are fixedly connected to a rotary drum ratchet (601) at the front and rear ends, respectively; six ratchet teeth (602) are fixedly connected to the inner surface of the rotary drum ratchet (601); the outwardly facing side of the knocking wedge (7) is an inclined surface; the inner end of the wedge guide rod (701) is fixedly connected to a limited end block; the wedge guide rod (701) is perpendicular to the axis of the one-way rotary drum (6); the outer end of the knocking force storage top spring (702) is fixedly connected to a side of the knocking wedge (7) facing the one-way rotary drum (6); the inner end of the knocking force storage top spring (702) is fixedly connected to the outer surface of the one-way rotary drum (6); the inner wall of the crucible inner mold (8) is longitudinally arranged with inner mold wedge teeth (801) on the left and right sides, respectively; the wedge surfaces of the inner mold wedge teeth (801) face inward and upward.

2. A processing device for processing a graphite crucible according to claim 1, characterized in that: The bottom center of the crucible outer mold (9) and the lifting platform of the press (1) are both penetrated with openings, and a discharge push rod is vertically installed at the bottom of the press (1), and the upper end of the discharge push rod is fixedly connected to a demoulding top platform, and the demoulding top platform is connected to the bottom opening of the crucible outer mold (9).

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