A forming device for porous alumina ceramics

Abstract

The utility model discloses a kind of forming devices of porous alumina ceramics, comprising: reinforcing part, the reinforcing part inside is provided with forming piece, forming plate is provided in the forming piece, upper cover is inserted on the forming piece, and forming plate top end penetrates upper cover, fixed plate is inserted on the upper cover, and fixed plate is inserted with forming plate;Through the screw post of reinforcing part and handle cooperation, reverse rotation can quickly release clamping force, take out forming assembly, through the plug-in block of forming piece and the plug-in slot insertion, after drying, plug-in block can be separated left and right box body, through the fixed plate insertion locking of upper cover, after pulling out, upper cover can be quickly taken down forming plate by lifting, realize efficient demoulding.

Description

Technical Field

[0001] This utility model relates to the field of molding equipment technology, specifically a molding device for porous alumina ceramics. Background Technology

[0002] Porous alumina ceramics are high-performance ceramic materials with alumina as the main component and containing a large number of interconnected or closed pores. Due to their high porosity and controllable pore size, they are widely used in gas or liquid filtration and other fields. Slip casting is one of the common processes for preparing porous alumina ceramics. This process involves mixing alumina powder with water and dispersant to form a low-viscosity slurry, injecting it into a molding device to form a green body, and then drying, demolding and sintering to complete the preparation. In terms of appearance, plate and sheet are common shapes of porous alumina ceramics. These planar structural materials usually have a thickness of 1 to 20 mm. Micropore arrays or heat dissipation holes can be processed on the surface according to application requirements to further expand their functionality.

[0003] Chinese Patent Publication No. CN212528131U discloses a molding device for alumina ceramics. Its structure includes a core mold, an outer rubber sleeve covering the core mold, and a fixing steel plate inside the rubber sleeve for fixing the shape of the rubber sleeve. A lower sealing plug matching the lower end of the rubber sleeve is located below the core mold, and a matching upper sealing plug is located at the upper end of the rubber sleeve. An upper fastening band is fitted around the upper outer perimeter of the rubber sleeve, and two symmetrically arranged lower fastening devices are fitted around the lower outer perimeter of the rubber sleeve. Each of the two lower fastening devices has an integrally formed base at its lower end, located below the rubber sleeve and the lower sealing plug. Ear plates are respectively provided at the contact positions of the two lower fastening devices. This novel alumina ceramic molding device is not easily deformed, is easy to move, and has high fastening stability.

[0004] However, the above-mentioned existing technology has the following shortcomings: During the demolding process after drying, the two sets of sealing plugs set at the upper and lower ends inside the rubber sleeve are tightly attached to the inner wall of the rubber sleeve. After drying, the blank and the sealing plugs may have a strong adsorption force, which requires a lot of manpower and time to operate during demolding. It may even require the use of special tools to forcibly disassemble it. This is not only inefficient, but also easy to cause bumps and damage to the blank, affecting the yield. Utility Model Content

[0005] The purpose of this invention is to solve the problem that during the demolding process after drying, the two sets of sealing plugs located at the upper and lower ends inside the rubber sleeve are tightly fitted to the inner wall of the rubber sleeve, and after drying, a strong adsorption force may be generated between the blank and the sealing plugs, which leads to a large amount of manpower and time required for demolding, and even requires the use of special tools to forcibly disassemble it. This is not only inefficient, but also easy to cause bumps and damage to the blank, affecting the yield. The invention provides a molding device for porous alumina ceramics.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a forming device for porous alumina ceramics, comprising: a reinforcing member, wherein a forming component is provided inside the reinforcing member, a forming plate is provided inside the forming component, a top cover is inserted into the forming component, and the top end of the forming plate penetrates through the top cover, and a fixing plate is inserted into the top cover, and the fixing plate is inserted into the forming plate.

[0007] The reinforcement includes a fixing frame, a stud threaded to the side end of the fixing frame and the stud penetrating the fixing frame, a stop block fixedly connected to one end of the stud and a handle fixedly connected to the other end of the stud, the stop block being disposed inside the fixing frame and the handle being disposed outside the fixing frame;

[0008] The molded part includes a left box and a right box. A plug is fixedly connected to the end face of the left box, and a slot is opened on the end face of the right box. The plug is inserted into the slot, and the plug and the slot are U-shaped.

[0009] As a further improvement of this utility model: the fixing frame is U-shaped, and multiple sets of studs, abutments and handles are provided, evenly distributed on both sides and top of the fixing frame.

[0010] As a further embodiment of this utility model: the upper cover has a U-shaped cross section, the bottom of the U-shaped upper cover has a through-hole groove, the side of the U-shaped upper cover has a through-hole fixing groove, the side of the U-shaped upper cover has a limiting groove, and the fixing groove and the limiting groove are connected, and the cross section of the fixing groove and the limiting groove is T-shaped.

[0011] As a further improvement of this utility model: multiple sets of placement grooves are provided, evenly distributed at the bottom of the inside of the U-shaped top cover, and two sets of fixing grooves and limiting grooves are provided, symmetrically distributed on both sides of the U-shaped top cover.

[0012] As a further embodiment of this utility model: a locking groove is provided through the side end of the molding plate, and one side of the locking groove penetrates the molding plate, making the molding plate concave. A placement groove is provided through the top of the molding plate. Multiple sets of molding plates are provided, and each set of placement grooves contains a set of molding plates.

[0013] As a further embodiment of this utility model: the cross-section of the fixing plate is I-shaped, and the fixing plate is inserted into the fixing groove, the limiting groove and the locking groove to fix the forming plate on the upper cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the U-shaped fixing frame of the reinforcement unit, in conjunction with multiple sets of studs, incorporates the molded part, the top cover, and the molding plate into a closed frame. Rotating the handle drives the abutment blocks to evenly abut from both sides and the top, forming a three-dimensional clamping force. Through the split design of the left and right boxes of the molded part, U-shaped inserts and slots are quickly inserted to form a closed cavity, ensuring a tight fit and preventing leakage during grouting. The U-shaped placement groove of the top cover cooperates with the concave locking groove of the molding plate, and the I-shaped fixing plate is inserted into the T-shaped fixing groove and the limiting groove to precisely fix the molding plate in the preset position, ensuring no deviation during grouting. This achieves high-precision molding of the internal channels or partition structures of the blank. During demolding, the studs of the reinforcement unit, in conjunction with the handle, can be rotated in the opposite direction to quickly release the clamping force and remove the molding components. The inserts of the molded part are inserted into the slots, and after drying, the inserts can be pulled out to separate the left and right boxes. The fixing plate of the top cover is inserted and locked, and after pulling out, the top cover can be lifted to quickly remove the molding plate, achieving efficient demolding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the forming device for porous alumina ceramics described in this utility model;

[0017] Figure 2 This is a schematic diagram of the reinforcement component in the forming device for porous alumina ceramics described in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the molded part in the molding device for porous alumina ceramics described in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the upper cover in the forming device for porous alumina ceramics described in this utility model;

[0020] Figure 5 This invention relates to a forming device for porous alumina ceramics. Figure 4 A schematic diagram of the structure at point A.

[0021] In the diagram: 1. Reinforcing component; 11. Fixing frame; 12. Stud; 13. Abutment; 14. Handle; 2. Molded part; 21. Left box; 22. Right box; 23. Insert block; 24. Slot; 3. Top cover; 31. Placement slot; 32. Fixing slot; 33. Limiting slot; 4. Molded plate; 41. Locking slot; 5. Fixing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0024] Reference Figure 1 In this embodiment of the present invention, a forming device for porous alumina ceramic includes: a reinforcing member 1, a forming member 2 inside the reinforcing member 1, a forming plate 4 inside the forming member 2, a top cover 3 inserted into the forming member 2, and the top end of the forming plate 4 penetrating through the top cover 3, and a fixing plate 5 inserted into the top cover 3, and the fixing plate 5 being inserted into the forming plate 4.

[0025] Reference Figure 2 The reinforcement component 1 includes a fixing frame 11. A stud 12 is threaded to the side end of the fixing frame 11 and passes through the fixing frame 11. A stop block 13 is fixedly connected to one end of the stud 12 and a handle 14 is fixedly connected to the other end of the stud 12. The stop block 13 is located inside the fixing frame 11 and the handle 14 is located outside the fixing frame 11. The fixing frame 11 is U-shaped. Multiple sets of studs 12, stop blocks 13 and handles 14 are provided and evenly distributed on both sides and the top of the fixing frame 11.

[0026] The above solution is adopted: the surrounding structure of the U-shaped fixing frame 11 can stably accommodate the molded part 2, the top cover 3 and the molding plate 4 inside, avoiding the deformation of the blank caused by uneven external force. Through multiple sets of studs 12 evenly distributed on both sides and the top of the fixing frame 11, the rotatable handle 14 drives the abutment 13 to simultaneously abut against both sides of the molded part 2, the top surface of the top cover 3 and the top of the molding plate 4, forming a uniform clamping force in three dimensions.

[0027] Reference Figure 3 The molded part 2 includes a left box 21 and a right box 22. A plug 23 is fixedly connected to the end face of the left box 21, and a slot 24 is opened on the end face of the right box 22. The plug 23 is inserted into the slot 24, and the plug 23 and the slot 24 are U-shaped.

[0028] The above solution involves splitting the molded part 2 into a left box 21 and a right box 22. By using the interlocking of the U-shaped insert 23 and the slot 24, a closed cavity can be quickly assembled, facilitating the injection of alumina slurry into the cavity. This ensures a tight fit at the joints, effectively preventing slurry leakage during the injection process. With the detachable box design, after drying, the left box 21 and the right box 22 can be separated simply by pulling the insert 23 out of the slot 24, easily exposing the internal blank. This significantly simplifies the demolding process and improves molding efficiency.

[0029] Reference Figures 4 to 5 The top cover 3 has a U-shaped cross section. The bottom of the U-shaped top cover 3 has a through-hole groove 31. The side of the U-shaped top cover 3 has a through-hole groove 32. The side of the U-shaped top cover 3 has a limiting groove 33. The fixing groove 32 and the limiting groove 33 are connected. The cross section of the fixing groove 32 and the limiting groove 33 is T-shaped. There are multiple sets of placement grooves 31, which are evenly distributed at the bottom of the U-shaped top cover 3. There are two sets of fixing grooves 32 and limiting grooves 33, which are symmetrically distributed on both sides of the U-shaped top cover 3.

[0030] The above scheme is adopted: by placing the bottom groove 31 of the U-shaped cross section, multiple molding plates 4 can be evenly inserted into the molding part 2, so that the bottom end of the molding plate 4 contacts the slurry and maintains vertical positioning, ensuring the dimensional accuracy of the internal channels or structural surfaces of the blank. Through the T-shaped fixing groove 32 and the limiting groove 33 that pass through the side end, the I-shaped fixing plate 5 is inserted into the locking groove 41 of the molding plate 4 to form a horizontal mechanical interlock, which effectively prevents the molding plate 4 from tilting or shifting during slurry injection and ensures the symmetry of the blank structure.

[0031] Reference Figure 4 A locking groove 41 is provided through the side end of the molding plate 4, and the inside of the locking groove 41 extends through the molding plate 4, making the molding plate 4 concave. The top of the molding plate 4 extends through the placement groove 31. There are multiple sets of molding plates 4, and each set of placement grooves 31 contains a set of molding plates 4.

[0032] The above solution is adopted: by inserting the locking groove 41 through the side end into the I-shaped fixing plate 5, the forming plate 4 is stably fixed in the T-shaped fixing groove 32 and the limiting groove 33 of the upper cover 3, avoiding the displacement caused by the flow of slurry during grouting, and ensuring the positional accuracy of the preset holes or partition structures inside the blank. With the concave cross section design, when the forming plate 4 is inserted into the slurry in the forming part 2, its bottom end contacts the bottom of the cavity, and its side forms a closed area with the box body, dividing the slurry into multiple independent forming areas. With the detachable insertion design with the upper cover 3, when demolding, only the fixing plate 5 needs to be removed and the upper cover 3 needs to be lifted to remove the forming plates 4 one by one from the blank.

[0033] Reference Figure 4 The fixed plate 5 has an I-shaped cross section. The fixed plate 5 is inserted into the fixed groove 32, the limiting groove 33 and the locking groove 41 to fix the forming plate 4 on the upper cover 3.

[0034] The above solution is adopted: by precisely fitting the two ends of the I-shaped plate with the T-shaped fixing groove 32 and the limiting groove 33 on the side of the upper cover 3, the locking groove 41 on the side of the forming plate 4 is clamped, forming a three-dimensional limiting in the horizontal direction. This effectively prevents the forming plate 4 from tilting or sliding due to the buoyancy of the slurry or the action of external force during grouting, ensuring the positional accuracy of its vertical insertion into the forming part 2, and ensuring the dimensional consistency of the internal channels or partition structures of the blank. Through the fixing plates 5 symmetrically distributed on both sides of the upper cover 3, multiple forming plates 4 can be locked simultaneously, so that each forming plate 4 is subjected to uniform force in the horizontal direction, avoiding structural displacement caused by force on one side. Through the plug-in detachable connection, when demolding, it is only necessary to pull out the fixing plate 5 horizontally along the limiting groove 33 to release the locking of the forming plate 4 without additional tools, which significantly simplifies the disassembly process and improves the molding efficiency.

[0035] The working principle of this utility model is as follows: In use, firstly, the left box 21 and right box 22 are assembled into a molded part 2 by inserting the U-shaped insert 23 into the slot 24, forming an internal closed cavity. Then, alumina slurry is injected into it. Next, the U-shaped top cover 3 is placed on top of the molded part 2, aligning the placement groove 31 at the bottom of the top cover 3 with the cavity of the molded part 2. Multiple sets of U-shaped molding plates 4 with locking grooves 41 are inserted into the molded part 2 from the placement grooves 31 until their bottom ends contact the slurry. Then, the I-shaped fixing plate 5 is inserted along the T-shaped fixing groove 32 and the limiting groove 33 on the side of the top cover 3, so that it is aligned with the molding plate 4. The locking slot 41 is inserted to fix the molding plate 4 on the upper cover 3. Then, the assembled molding part 2 and the upper cover 3 are placed in the U-shaped fixing frame 11. The studs 12, which are evenly distributed on both sides and the top of the fixing frame 11, are rotated so that the abutment 13 abuts against both sides of the molding part 2, the top surface of the upper cover 3, and the top of the molding plate 4, respectively, forming a multi-point uniform clamping force to fix the entire molding assembly. After drying, the studs 12 are rotated in the opposite direction to disengage the abutment 13. The molding part 2 and the upper cover 3 are then removed from the fixing frame 11. The insert 23 is then pulled out from the slot 24 to separate the left box 21 and the right box 22. Finally, the fixing plate 5 is pulled out. Release the locking mechanism on the molding plate 4, lift the top cover 3 upwards to separate the molding plate 4 from the placement groove 31, and finally, remove the multiple sets of molding plates 4 in sequence to expose the blank formed by the solidification of the slurry between the molding plates 4, thus completing the demolding process; through the cooperation of the U-shaped fixing frame 11 of the reinforcement 1 and multiple sets of studs 12, the molding part 2, the top cover 3 and the molding plate 4 are placed into the closed frame; rotate the handle 14 to drive the abutment block 13 to evenly abut from both sides and the top, forming a three-dimensional clamping force; through the split design of the left box 21 and the right box 22 of the molding part 2, the U-shaped insert block 23 and the slot 24 are quickly inserted to form a closed cavity. During grouting, the seal is tight to prevent leakage. After drying, the insert block 23 can be pulled out in the reverse direction to separate the box body, easily exposing the internal blank and simplifying the demolding process. The U-shaped placement groove 31 of the upper cover 3 cooperates with the concave locking groove 41 of the forming plate 4, and the I-shaped fixing plate 5 is inserted into the T-shaped fixing groove 32 and the limiting groove 33 to accurately fix the forming plate 4 in the preset position, ensuring that it does not shift during grouting. This achieves high-precision forming of the internal channels or partition structures of the blank. During demolding, only the fixing plate 5 needs to be removed and the upper cover 3 needs to be lifted to quickly disassemble the forming plate 4, avoiding damage to complex structures and providing key support for the fine channel shaping of porous ceramics.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A molding apparatus for porous alumina ceramics, characterized in that, include: The reinforcement component (1) has a molding component (2) inside it, a molding plate (4) inside the molding component (2), a top cover (3) is inserted into the molding component (2), and the top of the molding plate (4) passes through the top cover (3). A fixing plate (5) is inserted into the top cover (3), and the fixing plate (5) is inserted into the molding plate (4). The reinforcement component (1) includes a fixing frame (11), a stud (12) is threaded to the side end of the fixing frame (11), and the stud (12) passes through the fixing frame (11). A stop block (13) is fixedly connected to one end of the stud (12), and a handle (14) is fixedly connected to the other end of the stud (12). The stop block (13) is located inside the fixing frame (11), and the handle (14) is located outside the fixing frame (11). The molded part (2) includes a left box (21) and a right box (22). The end face of the left box (21) is fixedly connected with a plug (23), and the end face of the right box (22) is provided with a slot (24). The plug (23) is inserted into the slot (24), and the plug (23) and the slot (24) are U-shaped.

2. The forming apparatus for porous alumina ceramics according to claim 1, characterized in that, The fixing frame (11) is U-shaped, and multiple sets of studs (12), abutments (13) and handles (14) are provided, evenly distributed on both sides and top of the fixing frame (11).

3. The forming apparatus for porous alumina ceramics according to claim 2, characterized in that, The top cover (3) has a U-shaped cross section. The bottom of the U-shaped top cover (3) has a through-hole groove (31). The side of the U-shaped top cover (3) has a through-hole groove (32). The side of the U-shaped top cover (3) has a limiting groove (33). The fixing groove (32) and the limiting groove (33) are connected. The cross section of the fixing groove (32) and the limiting groove (33) is T-shaped.

4. The forming apparatus for porous alumina ceramics according to claim 3, characterized in that, The placement groove (31) is provided in multiple sets and is evenly distributed at the bottom of the U-shaped cover (3). The fixing groove (32) and the limiting groove (33) are each provided in two sets and are symmetrically distributed on both sides of the U-shaped cover (3).

5. The forming apparatus for porous alumina ceramics according to claim 4, characterized in that, The molding plate (4) has a through-hole locking groove (41) on its side end, and the molding plate (4) is penetrated through one side of the locking groove (41), making the molding plate (4) U-shaped. The top of the molding plate (4) has a through-hole placement groove (31). The molding plate (4) is provided in multiple sets, and each set of placement grooves (31) is provided with a set of molding plates (4).

6. The forming apparatus for porous alumina ceramics according to claim 5, characterized in that, The fixed plate (5) has an I-shaped cross section. The fixed plate (5) is inserted into the fixed groove (32), the limiting groove (33) and the locking groove (41) to fix the forming plate (4) on the upper cover (3).

Images