Silicon nitride ceramic integrated hot-pressing forming machine

Abstract

The utility model discloses a silicon nitride ceramic integrated hot-pressing forming machine, which relates to the technical field of ceramic hot-pressing and comprises a working table, a material table is rotatably connected to the middle of the working table, material holes which are uniformly distributed about the axis of the material table are formed in the outer edge of the material table, and a feeding device and a telescopic cylinder which are opposite to the axis direction of the material holes are mounted on one side of the working table. A pressing piece is fixedly installed at the output end of the telescopic cylinder, a bottom ring fixedly connected with the workbench is arranged between the workbench and the material table, the part, located under the feeding device and the telescopic cylinder, of the bottom ring is tightly attached to the material table, and an opening is formed in the end, away from the feeding device and the telescopic cylinder, of the bottom ring. The different positions of the material holes are adjusted through rotation of the material table, so that feeding and hot pressing are facilitated, formed powder moves to the opening of the bottom ring along with the material table, the formed powder is driven to be discharged through the conveying belt, and the technical problems that the stroke of the driving block is long, and the hot pressing forming efficiency of each silicon nitride ceramic is reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the field of ceramics, relates to a hot pressing technology, and specifically is an integrated hot pressing molding machine for silicon nitride ceramics. Background Art

[0002] The integrated hot pressing machine for silicon nitride ceramics is a special equipment used to manufacture silicon nitride ceramic products. It places silicon nitride ceramic powder in a mold and applies high pressure at high temperature to melt and combine the powder particles at high temperature to form high-density silicon nitride ceramic products. This hot pressing process can make silicon nitride ceramic materials have a uniform structure and excellent physical and chemical properties, and realize efficient, precise and consistent manufacturing of silicon nitride ceramic products.

[0003] In the prior art, such as a silicon nitride ceramic integrated hot pressing molding machine provided by Chinese patent publication number CN217861870U, it drives the powder outlet pipe to operate through an XY linear motor, so that the silicon nitride ceramic raw material enters the molding mold evenly, and then starts the servo motor to make the adjusting screw realize the rotation of the driving block, and the outer wall of the driving block contacts the inner wall of the movable hole, so that it can only move left or right inside it, so that the molding mold moves to the bottom of the pressure head, starts the hydraulic cylinder and the heating rod group, and the pressure head is heated to a specified temperature and then dropped into the molding mold, so that the silicon nitride ceramic is formed, the hydraulic cylinder is restored, and the servo motor is continued to be started to drive the displacement to the right. When the driving block is on the rightmost side of the movable hole, the brushless motor is started to drive the rotating shaft to move clockwise, so that the flip block drives the molding mold to rotate, so that its top is facing down and the silicon nitride ceramic formed inside it is poured out, so that the equipment as a whole is convenient for loading and unloading. However, the above technical solution still has the following problems:

[0004] The applicant believes that the movement of the unloading mechanism is achieved by driving the block, and the forming mold of the unloading mechanism is hot-pressed by the hydraulic cylinder and the heating rod group, and finally the falling of the formed material is achieved by the flipping block. As a result, during each silicon nitride ceramic forming process, the driving block needs to move back and forth according to different steps, resulting in a long stroke of the driving block and reduced production efficiency of each silicon nitride ceramic hot pressing forming process. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a silicon nitride ceramic integrated hot pressing molding machine, which solves the problem that the driving block has a long stroke and the hot pressing molding efficiency of each silicon nitride ceramic is reduced.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the utility model, a silicon nitride ceramic integrated hot pressing molding machine is proposed, comprising a workbench, a material table is rotatably connected to the middle part of the workbench, and material holes evenly distributed about its axis are opened at the outer edge of the material table, a feeding device and a telescopic cylinder facing the axis direction of the material hole are installed on one side of the workbench, a pressing piece is fixedly installed on the output end of the telescopic cylinder, a bottom ring fixedly connected to the workbench is arranged between the workbench and the material table, the bottom ring is tightly fitted with the material table at a portion directly below the feeding device and the telescopic cylinder, and an opening is arranged at one end of the bottom ring away from the feeding device and the telescopic cylinder.

[0007] Preferably, a rotating shaft is rotatably connected to the middle of the workbench, and the top end of the rotating shaft is fixedly connected to the material table.

[0008] Preferably, a mounting plate is fixedly mounted on one side of the workbench, a support frame is fixedly mounted on one end of the mounting plate, and a bottom end of the support frame is fixedly connected to the feeding device and the telescopic cylinder.

[0009] Preferably, a material box is fixedly mounted on the support frame, and the feeding device is connected to the material box.

[0010] Preferably, the arc length between the feeding device and the telescopic cylinder is the same as the arc length between two adjacent material holes.

[0011] Preferably, the bottom ring is provided with a horizontal portion directly below the feeding device and the pressing member.

[0012] Preferably, an inclined portion is provided at one end of the bottom ring away from the feeding device and the telescopic cylinder.

[0013] Preferably, the rotating shaft passes through the workbench, and a spur gear is fixedly mounted on the bottom end.

[0014] Preferably, the pressing member comprises a pressing cover and a heating rod which are fixedly connected to each other.

[0015] Preferably, a groove corresponding to the opening of the bottom ring is opened at one end of the workbench, and a conveyor belt is installed in the groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] A material table is set up, and the material table can be rotated to adjust different positions of the material holes, so that the feeding device can add silicon nitride ceramic powder into different material holes. The material table drives the silicon nitride ceramic powder in the material hole to move on the horizontal part until it is directly below the pressing piece. After the telescopic cylinder is started, the silicon nitride ceramic powder in the lower material hole is hot-pressed by the pressing piece. The formed powder has a tendency to fall along the inclined part as the material table rotates until the formed powder moves to the opening of the bottom ring, and the formed powder is discharged by the conveyor belt, so as to avoid increasing the stroke of the original driving block and improve the efficiency of hot pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural diagram of the utility model;

[0019] Figure 2 This is a partial structural diagram of the utility model without the workbench part;

[0020] Figure 3 This is a partial structural diagram of the utility model without the material table;

[0021] Figure 4 It is an exploded structural diagram of the pressing piece and the telescopic cylinder of the utility model.

[0022] The numbers in the figure represent: 1. workbench; 2. conveyor belt; 3. material table; 4. material hole; 5. feeding device; 6. support frame; 7. mounting plate; 8. material box; 9. telescopic cylinder; 10. pressing piece; 11. spur gear; 12. bottom ring; 13. horizontal part; 14. inclined part; 15. rotating shaft; 16. pressure cover; 17. heating rod. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-Figure 3As shown, a silicon nitride ceramic integrated hot pressing molding machine includes a workbench 1, the middle part of the workbench 1 is rotatably connected to a rotating shaft 15, the top of the rotating shaft 15 is fixedly connected to a material table 3, and a material hole 4 is opened at the outer edge of the material table 3. There are multiple material holes 4, and they are evenly distributed about the axis of the material table 3. The angle of each rotation of the material table 3 is the angle between two adjacent material holes 4. A mounting plate 7 is fixedly installed on one side of the workbench 1, and the mounting plate 7 is L-shaped, and a support frame 6 is fixedly installed on one end of the mounting plate 7, and the support frame 6 is U-shaped. A material box 8 is fixedly installed on the support frame 6, and the material box 8 is used to store silicon nitride ceramic powder. A feeding device 5 and a telescopic cylinder 9 are fixedly installed at the bottom end of the support frame 6. The telescopic cylinder 9 can be a pneumatic cylinder, an electric cylinder or a hydraulic cylinder. The feeding device 5 is connected to the silicon nitride ceramic powder in the material box 8, and falls to the opposite side through the material pipe at the bottom of the feeding device 5. The feeding device 5 can be a vacuum pump or a vacuum powder extractor. A pressing piece 10 is fixedly installed at the output end of the telescopic cylinder 9. The pressing piece 10 is used to press the material hole 4 corresponding to the outer edge of the material table 3. At the same time, the pressing piece 10 can generate heat and hot-press the silicon nitride ceramic powder in the material hole 4. A bottom ring 12 is fixedly connected to one side of the workbench 1 at the top. The bottom ring 12 is located directly below the feeding device 5 and the telescopic cylinder 9 and fits tightly with the material table 3. The bottom ring 12 is used to receive the silicon nitride ceramic powder in the material hole 4. When the material table 3 rotates, the material table 3 drives the silicon nitride ceramic powder in the corresponding material hole 4 to move along the surface of the bottom ring 12 until the silicon nitride ceramic powder in the corresponding material hole 4 moves to directly below the pressing piece 10. At this time, the telescopic cylinder 9 can be started, and the telescopic cylinder 9 drives the pressing piece 10 to hot-press the silicon nitride ceramic powder in the material hole 4.

[0025] As an implementation method in this embodiment, Figure 1-Figure 3 As shown, in order to reduce the distance that the silicon nitride ceramic powder in the material hole 4 moves on the bottom ring 12, the arc length between the feeding device 5 and the telescopic cylinder 9 is the same as the arc length between two adjacent material holes 4, thereby reducing the silicon nitride ceramic powder from falling out of the gap between the material table 3 and the bottom ring 12; in order to improve the efficiency of the silicon nitride ceramic powder falling out after molding, the bottom ring 12 is located directly below the feeding device 5 and the pressing piece 10 to set a horizontal portion 13, the horizontal portion 13 is convenient for receiving the powder, and also convenient for the hot pressing operation of the powder between the pressing piece 10 and the horizontal portion 13, the bottom ring 12 An inclined portion 14 is provided at the other end. After the powder is hot-pressed from the pressing piece 10, as the material table 3 rotates, the molded silicon nitride ceramic powder gradually moves from the horizontal portion 13 to the inclined portion 14, causing the molded powder to fall onto the inclined surface of the inclined portion 14. The inclined portion 14 is provided with an opening at one end opposite to the feeding device 5 and the telescopic cylinder 9. When the molded powder moves to the opening of the inclined portion 14, the molded silicon nitride ceramic powder can be automatically dropped, so that the molded powder drops automatically along with the hot pressing process, thereby improving production efficiency.

[0026] As an implementation method in this embodiment, Figure 2-Figure 4 As shown, the rotating shaft 15 passes through the workbench 1, and a spur gear 11 is fixedly installed at the bottom end. The rotating shaft 15 is used to mesh with external gears to drive the material table 3 to rotate through the rotating shaft 15 to achieve the hot pressing molding step. The pressing piece 10 includes a pressure cover 16 and a heating rod 17 fixedly connected to each other. The heating rod 17 is used to generate heat, and the pressure cover 16 is used to apply pressure to the powder, which are combined to achieve a hot pressing effect. In order to increase the discharge rate, a groove corresponding to the opening of the bottom ring 12 is opened at one end of the workbench 1, and a conveyor belt 2 is installed in the groove. As the molding powder falls onto the conveyor belt 2, the material is promptly delivered along the conveyor belt 2.

[0027] The working principle of the utility model is as follows: when in use, the spur gear 11 is first driven to rotate by an external motor or reducer, and the spur gear 11 drives the material table 3 to rotate through the rotating shaft 15. The material table 3 adjusts the different positions of the material hole 4 by rotation, so that the feeding device 5 can add silicon nitride ceramic powder toward different material holes 4. As the material table 3 rotates, the material table 3 drives the silicon nitride ceramic powder in the material hole 4 to move on the horizontal part 13 until it is located directly below the pressing piece 10. After the telescopic cylinder 9 is started, the silicon nitride ceramic powder in the lower material hole 4 is hot-pressed through the pressing piece 10. After the hot pressing is completed, the material table 3 continues to rotate, so that the molding powder gradually moves from the horizontal part 13 to the inclined part 14. The molding powder has a tendency to fall until the molding powder moves to the opening of the bottom ring 12 and drives the molding powder to be discharged through the conveyor belt 2. The whole process improves the efficiency of hot pressing of silicon nitride ceramic powder.

[0028] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A silicon nitride ceramic integrated hot pressing molding machine, characterized in that: include: A workbench (1), wherein a material platform (3) is rotatably connected to the middle of the workbench (1), and material holes (4) are evenly distributed about the axis of the material platform (3) at the outer edge thereof; a feeding device (5) and a telescopic cylinder (9) facing the axis direction of the material holes (4) are installed on one side of the workbench (1); a pressing piece (10) is fixedly installed at the output end of the telescopic cylinder (9); a bottom ring (12) fixedly connected to the workbench (1) is arranged between the workbench (1) and the material platform (3); a portion of the bottom ring (12) located directly below the feeding device (5) and the telescopic cylinder (9) is tightly fitted with the material platform (3); and an opening is arranged at one end of the bottom ring (12) away from the feeding device (5) and the telescopic cylinder (9).

2. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: The middle part of the workbench (1) is rotatably connected to a rotating shaft (15), and the top end of the rotating shaft (15) is fixedly connected to the material table (3).

3. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: A mounting plate (7) is fixedly mounted on one side of the workbench (1), a support frame (6) is fixedly mounted on one end of the mounting plate (7), and the bottom end of the support frame (6) is fixedly connected to the feeding device (5) and the telescopic cylinder (9).

4. The silicon nitride ceramic integrated hot pressing molding machine according to claim 3, characterized in that: A material box (8) is fixedly mounted on the support frame (6), and the feeding device (5) is connected to the material box (8).

5. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: The arc length between the feeding device (5) and the telescopic cylinder (9) is the same as the arc length between two adjacent material holes (4).

6. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: The bottom ring (12) is located directly below the feeding device (5) and the pressing piece (10) and has a horizontal portion (13).

7. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: An inclined portion (14) is provided at one end of the bottom ring (12) away from the feeding device (5) and the telescopic cylinder (9).

8. The silicon nitride ceramic integrated hot pressing molding machine according to claim 2, characterized in that: The rotating shaft (15) passes through the workbench (1), and a spur gear (11) is fixedly mounted on the bottom end.

9. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: The pressing piece (10) comprises a pressing cover (16) and a heating rod (17) which are fixedly connected to each other.

10. The silicon nitride ceramic integrated hot pressing molding machine according to claim 1, characterized in that: A groove corresponding to the opening of the bottom ring (12) is formed at one end of the workbench (1), and a conveyor belt (2) is installed in the groove.

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