Equipment for producing aluminum nitride injection molding ceramic part

Abstract

The invention discloses equipment for producing an aluminum nitride injection molding ceramic part, and relates to the technical field of ceramic part production. Equipment for producing aluminum nitride injection molding ceramic parts comprises a first machine shell, a movable mold, a fixed mold, a molding cavity, an injection pipe, an injection head and a grouting unit, and when the injection pipe is rotationally connected with the fixed mold, the injection pipe comprises a first pipe section and a second pipe section; by rotating the first pipe section, slurry in the second pipe section is disturbed to break bubbles, reduce viscosity and enhance fluidity, dynamic relative movement of the slurry in the first pipe section and the inner wall is promoted, the smoothness of the slurry entering the forming cavity is improved, meanwhile, the linked semi-spherical head further knocks the first pipe section in the rotating process, and the slurry is prevented from entering the forming cavity. Bubbles and gaps in the slurry are reduced through vibration, so that the slurry entering the forming cavity is more compact and uniform, and the compactness and the forming quality of the slurry are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic part production, and in particular relates to a device for producing aluminum nitride injection-molded ceramic parts. Background Art

[0002] At present, more and more ceramic products are made by injection molding. However, in this process, the connection between the grouting mechanism and the mold usually relies on the injection pipe. Since the injection pipe is in a static state, the slurry may encounter friction resistance on the inner wall of the pipe when flowing through it, which often hinders the smooth flow of the slurry, thereby affecting the uniform distribution of the slurry and the injection speed. If the injection speed is too slow, defects such as pores and cracks may appear inside the molded part. These problems will seriously reduce the molding quality and overall performance of the ceramic parts. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device for producing aluminum nitride injection-molded ceramic parts which can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: an equipment for producing aluminum nitride injection molded ceramic parts, comprising a casing with a sliding door and a movable mold and a fixed mold arranged inside the casing, the movable mold and the fixed mold have a plurality of independent molding cavities when the molds are closed, the fixed mold is provided with an injection pipe connected to each of the molding cavities, the other end of each of the injection pipes is connected with an injection head fixedly connected to the casing, the injection head is located at the corresponding end of the casing, and a grouting unit is provided. When the injection pipe is rotatably connected to the fixed mold, the injection pipe includes a first pipe section and a second pipe section, one end of the first pipe section is connected to the molding cavity through a sealed bearing, the end of the first pipe section extending to the outside of the fixed mold is connected to one end of the second pipe section through a sealed bearing, the other end of the second pipe section is connected to the injection head, and a disturbance piece is provided between the inside of the first pipe section and the second pipe section.

[0005] Preferably, a plurality of transverse support rods are fixedly connected between the inner walls of the casing 1, the movable mold is slidably connected between the surfaces of the plurality of transverse support rods, the fixed mold is fixedly connected between the surfaces of the plurality of transverse support rods, a vertical mounting plate is fixedly connected between the surfaces of the plurality of transverse support rods, a hydraulic cylinder 1 is mounted on the vertical mounting plate, and an output end of the hydraulic cylinder 1 is fixedly connected to one side of the movable mold.

[0006] Preferably, the grouting unit includes a casing two, and the casing two is located on a side corresponding to the casing one and is fixedly connected to a grouting shell, the grouting shell is located on one side of the grouting head and is connected to the injection head, the grouting shell is connected to a feed hopper, a screw is provided inside the grouting shell, and one end of the screw located inside the casing two is connected to a driving mechanism.

[0007] Preferably, an annular cavity is provided inside the grouting shell, and a heating coil is provided between the inner walls of the annular cavity.

[0008] Preferably, the driving mechanism includes an L-shaped mounting plate fixedly connected to the inner wall of the second casing, a hydraulic cylinder 2 is mounted on the L-shaped mounting plate, a square output end of the second hydraulic cylinder is connected to an end corresponding to the screw rod, a circular gear 1 is sleeved on the surface of the square output end of the second hydraulic cylinder, a matching circular gear 2 is connected to the surface of the first circular gear, a connecting shaft 1 is fixedly connected to the second circular gear, and a driving part 1 is mounted between one end of the connecting shaft 1 and the inner wall of the second casing.

[0009] Preferably, one side of the circular gear 1 is connected to a limit plate via a bearing, the limit plate is sleeved on the square output end of the hydraulic cylinder 2, and the bottom of the limit plate is fixedly connected to the L-shaped mounting plate.

[0010] Preferably, the disturbance member includes a cross-shaped mounting frame fixedly connected to the inner wall of the first pipe segment, a disturbance rod extending to the interior of the second pipe segment is fixedly connected to the axis of the cross-shaped mounting frame, and a plurality of arc-shaped knives distributed in a circle and all located inside the second pipe segment are fixedly connected to the disturbance rod.

[0011] Preferably, a cavity is provided inside the fixed mold, a driving part 2 is installed on the fixed mold, the output section of the driving part 2 is connected to a connecting shaft 2 located inside the cavity, a large circular gear is fixedly connected to the surface of the connecting shaft 2, the surface of the large circular gear is connected to the same number of small circular gears as the first pipe segment, and the small circular gears are fixedly connected to the surface of the first pipe segment.

[0012] Preferably, a square frame is fixedly connected to the inner wall of the cavity, a circular toggle block corresponding to the inside of the square frame is fixedly connected to the surface of the connecting shaft 2, a plurality of arc-shaped toggle pieces distributed in a circle are fixedly connected to the surface of the circular toggle block, a moving rod corresponding to each of the first pipe sections is slidably connected to the square frame, a semicircular ball head is fixedly connected to one end of the moving rod corresponding to the first pipe section, a resistance block fits with the circular toggle block is fixedly connected to one end of the moving rod located inside the square frame, and a spring fixedly connected between the resistance block and the inner wall of the square frame is provided on the surface of the moving rod.

[0013] Preferably, the side of the resistance block that is in contact with the surface of the circular toggle block is semicircular in shape, and the arc-shaped toggle piece is located between two resistance blocks that are in contact with each circular toggle block.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0015] When the grouting unit of the present invention injects the slurry into the second pipe section through the injection head, the rotating first pipe section drives the disturbance rod and the arc knife thereon to disturb the slurry, so as to break the bubbles generated in the slurry, thereby avoiding the risk of bubbles gathering inside the molded part to form pores. At the same time, this process also reduces the viscosity of the slurry and enhances the fluidity of the slurry when entering the first pipe section.

[0016] Subsequently, the slurry flows smoothly into the first pipe section, and forms a dynamic relative motion with the inner wall under the rotation of the first pipe section. Compared with the static pipe, the slurry in the dynamic pipe is not easy to accumulate or adhere due to long-term contact with the same inner wall, which ensures the smoothness of the slurry entering the molding cavity. Because the connection between the first pipe section and the molding cavity is in a dynamic state, the slurry will be subjected to a more uniform thrust when entering the molding cavity, effectively avoiding the problem of local slurry accumulation or loss that may occur during static connection, thereby improving the uniformity and consistency of the molded parts.

[0017] At the same time, during the rotation of the first pipe section, the semi-spherical head will be linked to slightly knock on the first pipe section. This knocking action not only breaks the viscosity and friction inside the slurry, further promotes the flow of the slurry, but also produces tiny displacements and disturbances inside the slurry, which helps to reduce the adhesion and accumulation of the slurry on the pipe wall, thereby reducing the risk of blockage. More importantly, when knocking on the surface of the first pipe section, the impact force transmitted by vibration effectively reduces the bubbles and voids inside the slurry, which makes the slurry entering the molding cavity more compact and uniform, thereby significantly improving the density of the slurry and the molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 A schematic cross-sectional view of the connection between a movable mold and a fixed mold of an apparatus for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0020] Figure 2 For the present invention Figure 1 A local enlarged structural diagram of the part;

[0021] Figure 3 A schematic diagram of the cross-sectional structure of a grouting shell of a device for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the second pipe section and the injection head of an apparatus for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the first pipe section of an apparatus for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0024] Figure 6 A schematic diagram of the connection structure between a circular large gear and a circular small gear of an apparatus for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0025] Figure 7 A schematic diagram of the connection structure of a circular toggle block and an abutment block of a device for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0026] Figure 8 For the present invention Figure 5 A schematic diagram of the local enlarged structure at B in FIG.

[0027] Fig. 9 A schematic diagram of a top-sectional structure of an apparatus for producing aluminum nitride injection-molded ceramic parts proposed by the present invention;

[0028] Fig.10 The present invention is a schematic diagram of the overall structure of an apparatus for producing aluminum nitride injection-molded ceramic parts.

[0029] In the figure: 1, housing 1; 11, horizontal support rod; 12, vertical mounting plate; 13, hydraulic cylinder 1; 2, movable mold; 3, fixed mold; 4, molding cavity; 5, injection pipe; 51, first pipe section; 52, second pipe section; 53, cross-shaped mounting frame; 54, disturbance rod; 55, arc knife; 56, cavity; 57, driving part 2; 58, connecting shaft 2; 59, circular large gear; 510, circular small gear; 511, square frame; 512, circular toggle block ; 513, arc-shaped toggle piece; 514, moving rod; 515, semicircular ball head; 516, resistance block; 517, spring; 6, injection head; 7, casing two; 71, grouting shell; 72, feed hopper; 73, screw; 74, annular cavity; 75, heating coil; 76, L-shaped mounting plate; 77, hydraulic cylinder two; 78, circular gear one; 79, circular gear two; 710, connecting shaft one; 711, driving unit one; 712, limit plate. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0031] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0032] In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] Example 1: Reference Figure 1-Figure 3 , a device for producing aluminum nitride injection-molded ceramic parts, comprising a casing 1 with a sliding door and a movable mold 2 and a fixed mold 3 arranged inside the casing 1, wherein the movable mold 2 and the fixed mold 3 have a plurality of independent molding cavities 4 when the molds are closed, and an injection pipe 5 connected to each molding cavity 4 is arranged on the fixed mold 3, and the other end of each injection pipe 5 is connected to an injection head 6 fixedly connected to the casing 1, and the injection head 6 is located at the end corresponding to the outside of the casing 1 and is provided with a grouting unit, and the grouting unit comprises a casing 2 7, and the casing 2 7 is located at a side corresponding to the casing 1 and is fixedly connected with a grouting shell 71, and the grouting shell 71 is located at one side of the grouting head and is connected to the injection head 6, and the grouting shell 71 is connected with a feed hopper 72, and a screw 73 is arranged inside the grouting shell 71, and a driving mechanism is connected to the end of the screw 73 located inside the casing 2 7, and the grouting shell 7 1 is provided with an annular cavity 74, and a heating coil 75 is provided between the inner walls of the annular cavity 74. The driving mechanism includes an L-shaped mounting plate 76 fixedly connected to the inner wall of the casing 2 7, and a hydraulic cylinder 2 77 is installed on the L-shaped mounting plate 76. The square output end of the hydraulic cylinder 2 77 is connected to the corresponding end of the screw 73, and a circular gear 1 78 is sleeved on the surface of the square output end of the hydraulic cylinder 2 77. The surface of the circular gear 1 78 is connected with a matching circular gear 2 79, and a connecting shaft 1 710 is fixedly connected to the circular gear 2 79. A driving part 1 711 is installed between one end of the connecting shaft 1 710 and the inner wall of the casing 2 7, and one side of the circular gear 1 78 is connected to a limiting plate 712 through a bearing. The limiting plate 712 is sleeved on the square output end of the hydraulic cylinder 2 77, and the bottom of the limiting plate 712 is fixedly connected to the L-shaped mounting plate 76.

[0034] When using the device, first, ensure that the sliding door of the housing 1 is in a closed state, and the movable mold 2 and the fixed mold 3 are accurately molded. Then, the pre-prepared aluminum nitride material is poured into the grouting shell 71 through the feed hopper 72, and the circular gear 2 79 and the circular gear 1 78 on the connecting shaft 1 710 are driven to rotate with each other by starting the driving part 1 711 using the servo motor, so that the square output end of the hydraulic cylinder 2 77 drives the screw 73 to rotate, thereby transporting the slurry entering the grouting shell 71. At the same time, in order to control the temperature and fluidity of the material, a heating device is embedded in the annular cavity 74 provided inside the grouting shell 71. The coil 75 can heat the material. Under the continuous push of the screw 73, the heated aluminum nitride material will be delivered to the output end of the grouting shell 71. At this time, the output end of the hydraulic cylinder 77 will further push the screw 73, and the slurry delivered from the output end of the grouting shell 71 will be accurately injected into each molding cavity 4 after the fixed mold 3 and the movable mold 2 are molded together through the injection head 6 and the injection tube 5. After the grouting is completed, when the material is cooled and solidified, the movable mold 2 and the fixed mold 3 can be driven to perform the demolding operation. Finally, the molded aluminum nitride ceramic parts can be easily taken out through the manipulator corresponding to the top opening of the casing 1.

[0035] Reference Figure 1 , Figure 3 , Fig. 9 and Fig.10 In order to achieve mold closing or demolding between the movable mold 2 and the fixed mold 3, a plurality of transverse support rods 11 are fixedly connected between the inner walls of the casing 1, the movable mold 2 is slidably connected between the surfaces of the plurality of transverse support rods 11, the fixed mold 3 is fixedly connected between the surfaces of the plurality of transverse support rods 11, a vertical mounting plate 12 is fixedly connected between the surfaces of the plurality of transverse support rods 11, a hydraulic cylinder 13 is installed on the vertical mounting plate 12, and the output end of the hydraulic cylinder 13 is fixedly connected to one side of the movable mold 2. When mold closing is required, the hydraulic cylinder 13 is started, and the output end of the hydraulic cylinder 13 will push the movable mold 2 to move along the transverse support rods 11 toward the fixed mold 3 until the movable mold 2 is in close contact with the fixed mold 3. When demolding is required, the hydraulic cylinder 13 is started again to pull the movable mold 2 to move in the opposite direction along the transverse support rods 11, so that the movable mold 2 is separated from the fixed mold 3, so that the formed aluminum nitride ceramic parts can be taken out.

[0036] Example 2: Reference Figure 2 and Figure 4-Figure 7, based on the above-mentioned embodiment 1, the difference is that when the injection pipe 5 is rotatably connected to the fixed mold 3, the injection pipe 5 includes a first pipe section 51 and a second pipe section 52, one end of the first pipe section 51 is connected to the molding cavity 4 through a sealed bearing, one end of the first pipe section 51 extending to the outside of the fixed mold 3 is connected to one end of the second pipe section 52 through a sealed bearing, and the other end of the second pipe section 52 is connected to the injection head 6, a cavity 56 is provided inside the fixed mold 3, a driving part 57 is installed on the fixed mold 3, the output section of the driving part 57 is connected to a connecting shaft 58 located inside the cavity 56, a large circular gear 59 is fixedly connected to the surface of the connecting shaft 58, the surface of the large circular gear 59 is connected to the same number of small circular gears 510 as the first pipe section 51, and the small circular gears 510 are fixedly connected to the surface of the first pipe section 51.

[0037] In the above technical solution, when the first pipe section 51 is rotated, the driving part 2 57 using the servo motor is started to drive the circular large gear 59 fixed on the connecting shaft 2 58 to rotate. During the rotation of the circular large gear 59, a plurality of circular small gears 510 meshing with the surface of the circular large gear 59 and distributed in a circle will also rotate accordingly, so that the first pipe section 51 located between the molding cavity 4 and the fixed mold 3 rotates. In this way, when the slurry injected from the injection head 6 into the second pipe section 52 flows into the first pipe section 51, the relative movement between the slurry and the inner wall of the pipeline becomes dynamic. Compared with the static pipeline, the slurry in the dynamic pipeline is less likely to accumulate or adhere due to long-term contact with the same inner wall, thereby maintaining the smooth flow of the slurry. Moreover, since the connection between the first pipe section 51 and the molding cavity 4 is dynamic, the slurry will be subjected to a more uniform thrust when entering the molding cavity 4, avoiding the problem of local slurry accumulation or loss that may occur during static connection, thereby improving the uniformity and consistency of the molded parts.

[0038] Example 3: Reference Figure 8, based on the above-mentioned embodiment 2, the difference is that a disturbance member is provided between the first pipe section 51 and the second pipe section 52, and the disturbance member includes a cross-shaped mounting frame 53 fixedly connected to the inner wall of the first pipe section 51, and a disturbance rod 54 extending to the inside of the second pipe section 52 is fixedly connected to the axis of the cross-shaped mounting frame 53, and a plurality of arc-shaped knives 55 distributed in a circumference and all located inside the second pipe section 52 are fixedly connected to the disturbance rod 54. When the first pipe section 51 rotates, the disturbance rod 54 will also rotate with it through the fixed connection with the cross-shaped mounting frame 53. This process In the process, the arc knife 55 physically disturbs the slurry inside the second pipe section 52, which can effectively break up the bubbles contained in the slurry, thereby avoiding the risk of bubbles gathering inside the molded part to form pores. At the same time, this treatment also reduces the viscosity of the slurry, enhances the fluidity of the slurry, ensures the smooth transmission of the slurry in the first pipe section 51, and reduces the risk of blockage and accumulation. On the other hand, the rotation of the first pipe section 51 promotes the rotation and shearing of the slurry in the pipeline, further improves the mixing uniformity of the slurry, reduces bubbles and impurities, and improves the overall quality.

[0039] The optimization is to refer to Figure 2 and Figure 4-Figure 7 The inner wall of the cavity 56 is fixedly connected with a square frame 511, and the surface of the connecting shaft 2 58 is fixedly connected with a circular toggle block 512 corresponding to the inside of the square frame 511, and the surface of the circular toggle block 512 is fixedly connected with a plurality of arc-shaped toggle pieces 513 distributed in a circle. A moving rod 514 corresponding to each first pipe section 51 is slidably connected to the square frame 511, and a semicircular ball head 515 is fixedly connected to one end of the moving rod 514 corresponding to the first pipe section 51, and a resistance block 516 that fits the circular toggle block 512 is fixedly connected to one end of the moving rod 514 located inside the square frame 511. A spring 517 is provided on the surface of the moving rod 514 and is fixedly connected between the resistance block 516 and the inner wall of the square frame 511. The resistance block 516 is in a semicircular shape on one side that fits the surface of the circular toggle block 512, and the arc-shaped toggle piece 513 is located between two resistance blocks 516 that fit in a circle on each circular toggle block 512.

[0040] When the connecting shaft 2 58 rotates and drives multiple first pipe sections 51 to rotate synchronously, the circular toggle block 512 fixed on the connecting shaft 2 58 will synchronously drive the arc-shaped toggle pieces 513 evenly distributed on the circumference, and each arc-shaped toggle piece 513 applies pressure to its corresponding resistance block 516, causing the resistance block 516 to slide on the square frame 511 and compress the spring 517. During this process, the semicircular ball head 515 connected to the resistance block 516 will produce a slight knocking effect on the first pipe section 51. With the combination of the rotation of the first pipe section 51 and the knocking vibration, the slurry in the pipeline will be positively affected. This vibration effect helps to break the viscosity and friction inside the slurry, so that the slurry can flow more smoothly in the pipeline, which not only reduces the accumulation and blockage risk of slurry in the pipeline, but also reduces the bubbles and gaps inside the slurry through the impact force transmitted by the vibration, making the slurry entering the molding cavity 4 more compact, thereby improving the density and uniformity of the slurry.

[0041] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A device for producing aluminum nitride injection molded ceramic parts, characterized in that: include: A housing with a sliding door (1); and a movable mold (2) and a fixed mold (3) arranged inside the housing (1); the movable mold (2) and the fixed mold (3) have a plurality of independent molding cavities (4) when the movable mold (2) and the fixed mold (3) are closed; the fixed mold (3) is provided with an injection pipe (5) connected to each molding cavity (4); the other end of each injection pipe (5) is connected to an injection head (6) fixedly connected to the housing (1); the injection head (6) is provided with a grouting unit at one end corresponding to the outside of the housing (1); when the injection pipe (5) is in contact with the fixed mold (3), the injection head (6) is provided with a grouting unit; When the mold (3) is rotatably connected, the injection pipe (5) comprises a first pipe section (51) and a second pipe section (52); one end of the first pipe section (51) is connected to the molding cavity (4) via a sealing bearing; one end of the first pipe section (51) extending to the outside of the fixed mold (3) is connected to one end of the second pipe section (52) via a sealing bearing; the other end of the second pipe section (52) is connected to the injection head (6); and a disturbance piece is provided between the inside of the first pipe section (51) and the second pipe section (52).

2. The device for producing aluminum nitride injection molded ceramic parts according to claim 1, characterized in that: A plurality of transverse support rods (11) are fixedly connected between the inner walls of the casing (1), the movable mold (2) is slidably connected between the surfaces of the plurality of transverse support rods (11), the fixed mold (3) is fixedly connected between the surfaces of the plurality of transverse support rods (11), a vertical mounting plate (12) is fixedly connected between the surfaces of the plurality of transverse support rods (11), a hydraulic cylinder (13) is mounted on the vertical mounting plate (12), and an output end of the hydraulic cylinder (13) is fixedly connected to one side of the movable mold (2).

3. The device for producing aluminum nitride injection molded ceramic parts according to claim 1, characterized in that: The grouting unit comprises a second casing (7), wherein the second casing (7) is located on a side corresponding to the first casing (1) and is fixedly connected with a grouting shell (71), wherein the grouting shell (71) is located on one side of the grouting head and is connected with the injection head (6), wherein the grouting shell (71) is connected with a feed hopper (72), wherein a screw (73) is provided inside the grouting shell (71), and wherein one end of the screw (73) located inside the second casing (7) is connected with a driving mechanism.

4. The device for producing aluminum nitride injection-molded ceramic parts according to claim 3, characterized in that: An annular cavity (74) is provided inside the grouting shell (71), and a heating coil (75) is provided between the inner walls of the annular cavity (74).

5. The device for producing aluminum nitride injection-molded ceramic parts according to claim 3, characterized in that: The driving mechanism comprises an L-shaped mounting plate (76) fixedly connected to the inner wall of the second housing (7), a second hydraulic cylinder (77) being mounted on the L-shaped mounting plate (76), a square output end of the second hydraulic cylinder (77) being connected to one end corresponding to the screw rod (73), a circular gear (78) being sleeved on the surface of the square output end of the second hydraulic cylinder (77), a matching circular gear (79) being connected to the surface of the first circular gear (78), a connecting shaft (710) being fixedly connected to the second circular gear (79), and a driving part (711) being mounted between one end of the connecting shaft (710) and the inner wall of the second housing (7).

6. The device for producing aluminum nitride injection-molded ceramic parts according to claim 5, characterized in that: One side of the circular gear 1 (78) is connected to a limit plate (712) via a bearing; the limit plate (712) is sleeved on the square output end of the hydraulic cylinder 2 (77); the bottom of the limit plate (712) is fixedly connected to the L-shaped mounting plate (76).

7. The device for producing aluminum nitride injection-molded ceramic parts according to claim 1, characterized in that: The disturbance member comprises a cross-shaped mounting frame (53) fixedly connected to the inner wall of the first pipe section (51); a disturbance rod (54) extending into the interior of the second pipe section (52) is fixedly connected to the axis of the cross-shaped mounting frame (53); and a plurality of arc-shaped knives (55) distributed in a circumference and all located inside the second pipe section (52) are fixedly connected to the disturbance rod (54).

8. The device for producing aluminum nitride injection-molded ceramic parts according to claim 7, characterized in that: A cavity (56) is provided inside the fixed mold (3), and a second driving part (57) is mounted on the fixed mold (3); an output section of the second driving part (57) is connected to a second connecting shaft (58) located inside the cavity (56); a large circular gear (59) is fixedly connected to the surface of the second connecting shaft (58); the surface of the large circular gear (59) is connected to a number of small circular gears (510) equal to the number of the first pipe section (51); and the small circular gears (510) are fixedly connected to the surface of the first pipe section (51).

9. The device for producing aluminum nitride injection-molded ceramic parts according to claim 8, characterized in that: A square frame (511) is fixedly connected to the inner wall of the cavity (56); a circular toggle block (512) corresponding to the inside of the square frame (511) is fixedly connected to the surface of the second connecting shaft (58); a plurality of arc-shaped toggle pieces (513) distributed in a circumference are fixedly connected to the surface of the circular toggle block (512); a moving rod (514) corresponding to each first pipe segment (51) is slidably connected to the square frame (511); a semicircular ball head (515) is fixedly connected to one end of the moving rod (514) corresponding to the first pipe segment (51); a resistance block (516) fitted with the circular toggle block (512) is fixedly connected to one end of the moving rod (514) located inside the square frame (511); and a spring (517) fixedly connected between the resistance block (516) and the inner wall of the square frame (511) is sleeved on the surface of the moving rod (514).

10. The device for producing aluminum nitride injection-molded ceramic parts according to claim 9, characterized in that: The side of the resistance block (516) that is in contact with the surface of the circular toggle block (512) is semicircular in shape, and the arc-shaped toggle piece (513) is located between two resistance blocks (516) that are in contact with each circular toggle block (512).

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