Aluminum oxide ceramic powder forming equipment

Abstract

The utility model relates to aluminum oxide ceramic powder forming equipment applied to the technical field of aluminum oxide ceramics, which comprises an extrusion device, the extrusion device comprises an extrusion disc, a dust collection groove is formed in the extrusion disc, and a pressing groove is formed in the extrusion disc; a recycling box is fixedly connected to the bottom of the extrusion disc and communicates with the dust collection groove through a first guide pipe, and an air pump is arranged on the first guide pipe. A pressing plate is slidably connected in the pressing groove, a spring is fixedly connected to the bottom surface of the pressing plate, and the other end of the spring is fixedly connected with the pressing groove; a hydraulic machine is fixedly connected to the extrusion disc, and the output end of the hydraulic machine corresponds to the pressing groove; by the adoption of the structure, dry pressing forming of aluminum oxide ceramics is conducted through the hydraulic machine and the pressing groove, waste powder can be generated in the pressing process and recycled through the recycling device, the cleanliness of the machining environment is kept, after pressing of the aluminum oxide ceramics is completed, the spring drives the pressing plate to eject the aluminum oxide ceramics out of the pressing groove, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a powder forming device, in particular to an alumina ceramic powder forming device applied in the technical field of alumina ceramics. Background Art

[0002] Alumina ceramics are a type of ceramic material with aluminum oxide as the main component, used for thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic cleaning is required. Alumina ceramics are a widely used ceramic. Due to their superior performance, they are increasingly widely used in modern society to meet the needs of daily use and special performance. The molding methods of alumina ceramic products include dry pressing, grouting, extrusion, cold isostatic pressing, injection, casting, hot pressing and hot isostatic pressing. In recent years, molding technologies such as filter press molding, direct solidification injection molding, gel injection molding, centrifugal grouting molding and solid free molding have been developed at home and abroad. Different product shapes, sizes, complex shapes and precision products require different molding methods.

[0003] The patent with publication number CN220882760U discloses an alumina ceramic pressing and molding equipment, including a base, a processing table is provided on the top of the base, a lower mold is provided on the inner wall of the processing table, a spring is provided on the inner bottom wall of the lower mold, a movable plate is installed on the top of the spring, and a serpentine cold water pipe is wrapped around the outer wall of the lower mold; by setting a telescopic cylinder body, the upper mold connected to the pressing plate is driven to move downward, so that the upper mold presses the alumina ceramics on the movable plate in the lower mold, and a powerful water pump body is set, so that the delivery pipe adds cold water in the water tank into the serpentine cold water pipe through the water inlet, cools the alumina ceramics in the lower mold, and accelerates the molding effect of the alumina ceramics; a spring is set, and the rebound force drives the alumina ceramics pressed and molded on the movable plate to move upward, thereby facilitating the removal of the pressed alumina ceramics.

[0004] The above scheme improves the demoulding effect of alumina ceramics by providing a cooling device, but it does not take into account the waste generated in the process of pressing alumina ceramics. The existing dry pressing of alumina ceramics will produce waste powder, which pollutes the processing environment and reduces the yield of the pressed alumina ceramics. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing dry pressing of alumina ceramics produces waste powder, which pollutes the processing environment and reduces the yield rate of the pressed alumina ceramics.

[0006] In order to solve the above problems, the utility model provides an alumina ceramic powder forming device, comprising an extrusion device, the extrusion device comprising an extrusion disk, a dust suction groove is provided on the extrusion disk, and a pressing groove is provided on the extrusion disk;

[0007] A recovery device is fixedly connected to the bottom of the extrusion plate, and the recovery device includes a recovery box, which is fixedly connected to the bottom surface of the extrusion plate. The recovery box and the dust collection tank are connected through a conduit. An air pump is provided on the conduit, and the air pump is fixedly connected to the outer wall of the recovery box.

[0008] A pressing plate is slidably connected in the pressing groove, a spring is fixedly connected to the bottom surface of the pressing plate, and the other end of the spring is fixedly connected to the pressing groove;

[0009] A hydraulic press is fixedly connected to the extrusion plate, and an output end of the hydraulic press is arranged corresponding to the pressing groove.

[0010] In the above-mentioned alumina ceramic powder forming equipment, alumina ceramics are dry-pressed by a hydraulic press and a pressing trough. Waste powder is generated during the pressing process. The waste powder is mainly distributed around the pressing trough. The waste powder is recovered by a recovery device when it is generated to keep the processing environment clean. After the alumina ceramics are pressed, the pressing plate will be driven out of the pressing trough by a spring to improve processing efficiency.

[0011] As a further improvement of the present application, two dust suction grooves are provided, and the two dust suction grooves are arranged opposite to each other along the axis of the extrusion disk.

[0012] As a further improvement of the present application, the recycling box includes a recycling support box body and a recycling support box door hinged to the recycling support box body, and the recycling support box body is fixedly connected to the bottom of the extrusion plate.

[0013] As a further improvement of the present application, a vacuum device is provided at the bottom of the extrusion plate corresponding to the pressing groove position. The vacuum device includes a second conduit and a vacuum pump provided on the second conduit. The second conduit is connected to the pressing groove, and the vacuum pump is fixedly connected to the bottom surface of the extrusion plate.

[0014] As another improvement of the present application, the output end of the hydraulic press is threadedly connected with a pressure head, and the pressure head is made of high-strength steel.

[0015] As another improved supplement of the present application, the inner wall of the pressing groove and the top surface of the pressing plate are chrome-plated, and the inner wall of the pressing groove and the top surface of the pressing plate are both smooth surfaces.

[0016] To sum up, during the dry pressing process of alumina ceramic powder, the alumina ceramic powder is placed in the pressing trough, the output end of the hydraulic press moves downward, and the output end squeezes the alumina ceramic powder, so that the pressing plate and the alumina ceramic powder move downward along the pressing trough at the same time. The movement of the pressing plate will compress the spring, and the spring is compressed to the bottom. At this time, the output end and the pressing plate of the hydraulic press will dry press the alumina ceramic powder, and at the same time the recovery device is started to suck the waste powder generated during the dry pressing process from the dust suction trough and return it to the recovery box along the conduit. Recycling the waste powder can keep the table clean and improve the yield rate of alumina ceramics. After the dry pressing of the hydraulic press is completed, the output end of the hydraulic press moves upward, and the spring is released, which will drive the pressing plate and alumina ceramics to move upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the first and second embodiments of the present application;

[0018] Figure 2 Schematic diagram of the three-dimensional structure of the first and second embodiments of the present application;

[0019] Figure 3 Schematic diagram of the three-dimensional structure of the recycling box of the first and second embodiments of this application;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the pressing groove of the first and second embodiments of the present application;

[0021] Figure 5 Schematic diagram of the three-dimensional structure of the recovery device of the first and second embodiments of the present application;

[0022] Figure 6 These are three-dimensional structural diagrams of the vacuum devices according to the first and second embodiments of the present application.

[0023] Description of the numbers in the figure:

[0024] 1. Extrusion device; 101. Extrusion plate; 102. Dust suction groove; 103. Pressing groove; 104. Pressing plate; 105. Spring; 2. Hydraulic press; 3. Recovery device; 301. Recovery support box; 302. Recovery support box door; 303. Conduit 1; 304. Air pump; 4. Vacuum device; 401. Conduit 2; 402. Vacuum pump. DETAILED DESCRIPTION

[0025] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0026] The first implementation method:

[0027] Figure 1-Figure 5The present invention shows an alumina ceramic powder forming device, comprising an extrusion device 1, wherein the extrusion device 1 comprises an extrusion disc 101, a dust suction groove 102 is formed on the extrusion disc 101, and a pressing groove 103 is formed on the extrusion disc 101;

[0028] A recovery device 3 is fixedly connected to the bottom of the extrusion disk 101, and the recovery device 3 includes a recovery box, which is fixedly connected to the bottom surface of the extrusion disk 101. The recovery box and the dust suction groove 102 are connected through a conduit 1 303. There are two dust suction grooves 102, and the two dust suction grooves 102 are arranged opposite to each other along the axis of the extrusion disk 101. An air pump 304 is provided on the conduit 1 303, and the air pump 304 is fixedly connected to the outer wall of the recovery box. The preferred air pump 304 model is an XGB-1.5KW / 380V high-pressure vortex fan. The air pump 304 sucks the waste powder through the dust suction groove 102 and recovers it to the recovery box through the conduit 1 303. The recovery box includes a recovery support box body 301 and a recovery support box door 302 hinged to the recovery support box body 301. The recovery support box body 301 is fixedly connected to the bottom of the extrusion disk 101. By regularly cleaning the recovery support box body 301, the working environment of the dry pressing of alumina ceramics can be maintained, and the yield rate of alumina ceramics can be effectively improved.

[0029] A pressing plate 104 is slidably connected in the pressing groove 103, and a spring 105 is fixedly connected to the bottom surface of the pressing plate 104. The other end of the spring 105 is fixedly connected to the pressing groove 103. After the alumina ceramic is dry-pressed, the spring 105 is released to drive the pressing plate 104 to move upward, ejecting the alumina ceramic to improve production efficiency. The inner wall of the pressing groove 103 and the top surface of the pressing plate 104 are chrome-plated. The inner wall of the pressing groove 103 and the top surface of the pressing plate 104 are both smooth surfaces. The inner wall of the pressing groove 103 and the top surface of the pressing plate 104 are chrome-plated and polished to be smooth, which can effectively reduce defects that may occur when the alumina ceramic is demolded, thereby further improving the yield rate of the alumina ceramic.

[0030] A hydraulic press 2 is fixedly connected to the extrusion disk 101, and the output end of the hydraulic press 2 is arranged corresponding to the pressing groove 103. The preferred hydraulic press 2 model is YQ32-63t powder forming hydraulic press 2. The output end of the hydraulic press 2 is threadedly connected to a pressure head, and the pressure head is made of high-strength steel. The use of high-strength steel can maintain the stability of the hydraulic press 2 during the dry pressing process and prevent metal deformation from causing errors in the specifications of alumina ceramics.

[0031] During the dry pressing process of alumina ceramic powder, the alumina ceramic powder is placed in the pressing groove 103 and scraped flat. The hydraulic press 2 is started to move the output end of the hydraulic press 2 downward to squeeze the alumina ceramic powder. The output end of the hydraulic press 2 simultaneously drives the alumina ceramic powder and the pressing plate 104 to move downward. During the downward movement of the pressing plate 104, the spring 105 is compressed. When the spring 105 is compressed to the bottom, the alumina ceramic powder is dry pressed. As the hydraulic press 2 continues to apply pressure to the alumina ceramic powder, the alumina ceramic powder will be tightly combined. After pressing for a period of time, the output end of the hydraulic press 2 moves upward, the spring 105 is released, and the dry-pressed alumina ceramic is ejected from the pressing groove 103. At this time, the alumina ceramic is taken out, and the pressing groove 103 is filled with alumina ceramic powder again, and the dry pressing of the next alumina ceramic powder can be started.

[0032] During the downward movement of the hydraulic press 2, the air pump 304 is started to inhale air. The air drives the waste powder on the surface of the extrusion plate 101 and floating in the air into the dust suction groove 102, passes through the conduit 1 303, and is finally recovered into the recovery support box 301. The air pump 304 will continue to work throughout the dry pressing process to keep the surface of the extrusion plate 101 clean, which can effectively prevent the surface of the alumina ceramic from being contaminated with waste powder and ensure its yield after firing.

[0033] Second implementation method:

[0034] Figures 1-6 An alumina ceramic powder molding device is shown. Different from the first embodiment, a vacuum device 4 is additionally provided at the bottom of the extrusion plate 101 corresponding to the pressing groove 103. The vacuum device 4 includes a second conduit 401 and a vacuum pump 402 arranged on the second conduit 401. The second conduit 401 is connected to the pressing groove 103. The vacuum pump 402 is fixedly connected to the bottom surface of the extrusion plate 101. The preferred model of the vacuum pump 402 is a 2XZF-15C direct-connected rotary vane vacuum pump. During the dry pressing process of the alumina ceramic, the alumina ceramic is tightly attached to the inner wall of the pressing groove 103. During the demolding process, the friction with the inner wall of the pressing groove 103 may cause defects in the alumina ceramic, thereby reducing the processing efficiency and increasing the processing cost.

[0035] During the dry pressing process of alumina ceramics, the output end of the hydraulic press 2 moves downward. When the output end of the hydraulic press 2 contacts the alumina ceramic powder and drives it to move downward, the vacuum pump 402 is started. Since the output end of the hydraulic press 2 is in contact with the pressing groove 103, after the vacuum pump 402 is started, the gas in the pressing groove 103 is extracted and discharged to the outside along the second pipe, so that a low pressure or negative pressure environment is formed in the pressing groove 103.

[0036] After the alumina ceramics are dry-pressed, the output end of the hydraulic press 2 moves upward and the vacuum pump 402 stops. Since the pressing tank 103 is in a low pressure or negative pressure state, after the vacuum pump 402 stops, the gas in the surrounding environment will enter the pressing tank 103 and flow along the alumina ceramics and the inner wall of the pressing tank 103, slightly separating the alumina ceramics and the inner wall of the pressing tank 103. When the pressing plate 104 drives the alumina ceramics, the friction between the alumina ceramics and the inner wall of the pressing tank 103 is reduced, which can effectively improve the yield of the alumina ceramics.

[0037] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. An alumina ceramic powder molding device, characterized in that: The extrusion device (1) comprises an extrusion disc (101), a dust suction groove (102) is provided on the extrusion disc (101), and a pressing groove (103) is provided on the extrusion disc (101); The bottom of the extrusion plate (101) is fixedly connected to a recovery device (3), and the recovery device (3) includes a recovery box, the recovery box is fixedly connected to the bottom surface of the extrusion plate (101), the recovery box and the dust suction groove (102) are connected through a conduit (303), and an air pump (304) is provided on the conduit (303), and the air pump (304) is fixedly connected to the outer wall of the recovery box; A pressing plate (104) is slidably connected in the pressing groove (103), a spring (105) is fixedly connected to the bottom surface of the pressing plate (104), and the other end of the spring (105) is fixedly connected to the pressing groove (103); The extrusion disc (101) is fixedly connected to a hydraulic press (2), and the output end of the hydraulic press (2) is arranged corresponding to the pressing groove (103).

2. The alumina ceramic powder forming equipment according to claim 1, characterized in that: There are two dust suction grooves (102), and the two dust suction grooves (102) are arranged opposite to each other along the axis of the extrusion disk (101).

3. The alumina ceramic powder molding equipment according to claim 1, characterized in that: The recovery box comprises a recovery support box body (301) and a recovery support box door (302) hinged to the recovery support box body (301); the recovery support box body (301) is fixedly connected to the bottom of the extrusion plate (101).

4. The alumina ceramic powder molding equipment according to claim 1, characterized in that: A vacuum device (4) is provided at the bottom of the extrusion plate (101) at a position corresponding to the pressing groove (103), and the vacuum device (4) comprises a second conduit (401) and a vacuum pump (402) provided on the second conduit (401). The second conduit (401) is in communication with the pressing groove (103), and the vacuum pump (402) is fixedly connected to the bottom surface of the extrusion plate (101).

5. The alumina ceramic powder molding equipment according to claim 1, characterized in that: The output end of the hydraulic press (2) is threadedly connected with a pressure head, and the pressure head is made of high-strength steel.

6. The alumina ceramic powder molding equipment according to claim 1, characterized in that: The inner wall of the pressing groove (103) and the top surface of the pressing plate (104) are made of chrome plating technology, and the inner wall of the pressing groove (103) and the top surface of the pressing plate (104) are both smooth surfaces.

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