Alumina substrate production process based on slurry casting method

Abstract

The present invention relates to the field of alumina substrate production, and in particular to an alumina substrate production process based on a water slurry condensation method, comprising an operating table, a U-shaped plate, a molding mechanism, a linkage mechanism, a demoulding mechanism and a cylinder. The trigger component in the molding mechanism of the present invention cooperates with the opening and closing component, and a force is applied during grouting to make each partition close to each other to form a grouting area. After the slurry is formed in the grouting area and the surface is dried, the trigger component cooperates with the opening and closing component to drive each partition to separate from bottom to top in sequence, thereby separating the substrate located between the partitions from the upper partition. During this process, a scraper group in the demoulding mechanism will be close to the lower partitions in the grouting area one by one during the movement of the partitions, and then the scraper group can separate the substrate from the partition when fed under the push of the linkage mechanism, so that all substrates can be taken out of the grouting area at one time, thereby improving the demoulding efficiency.

Description

Technical Field

[0001] The invention relates to the field of aluminum oxide substrate production, and in particular to an aluminum oxide substrate production process based on a water slurry casting method. Background Art

[0002] Alumina substrate is a widely used material. It is a colorless and odorless ceramic material. It is used in many industrial fields due to its high melting point, good electrical insulation, chemical corrosion resistance and high mechanical strength.

[0003] Alumina substrates can be prepared by a variety of methods, including but not limited to sintering, co-precipitation and hydrogel casting. When preparing alumina substrates by hydrogel casting, it is necessary to first prepare alumina powder and additives in a certain proportion, mix these ingredients in water to form a stable slurry, and then inject the slurry into a mold for gelation. The gelled substrate is then taken out of the mold, and then subjected to a series of treatments such as drying and sintering to finally obtain an alumina substrate.

[0004] Currently, the more common molds are mostly rectangular box structures, with multiple spacers evenly inserted in the rectangular box. The rectangular cavity area formed between adjacent spacers and the side panels of the rectangular box is the grouting area, and the shape of the cavity is the shape of the substrate after molding (generally a rectangle). When the gelled and surface-dried substrate is taken out of the mold, the method often used is to take out the spacers in the rectangular box one by one in a certain order, and the substrate is attached to the taken out spacers, and then the substrate adhered to the spacers is removed manually or with auxiliary tools.

[0005] In actual operation, a large number of substrates are formed in a single mold at one time, so the above-mentioned actions of removing the spacer from the rectangular box and removing the substrate from the spacer need to be repeated many times, which makes the demolding step more complicated and thus less efficient. Summary of the invention

[0006] In order to solve the above problems, the present invention adopts the following technical solution, a process for producing an alumina substrate based on a slurry casting method, comprising the following steps:

[0007] S1. Slurry preparation: prepare alumina powder, dispersant, pH adjuster and gelling agent in a certain proportion, and mix these ingredients in water to form a stable slurry.

[0008] S2, injection molding: inject the slurry in S1 into the mold.

[0009] S3, demoulding: after the slurry is formed into a substrate in the grouting area and the surface is dry, the substrate is taken out.

[0010] S4, drying: drying the removed substrate to remove excess moisture. The temperature and humidity need to be controlled during the drying process to avoid deformation or cracking.

[0011] S5. Sintering: The dried substrate is sintered at high temperature to further improve its density and compactness.

[0012] S6. Post-processing: Grinding and polishing the sintered substrate to achieve a specific dimensional accuracy and flatness.

[0013] Among them, S3 is completed by an alumina substrate molding device, which includes an operating table. A U-shaped groove is opened on the left side of the operating table surface. A U-shaped plate is slidably inserted in the U-shaped groove, and the right end face of the U-shaped plate is connected to a molding mechanism.

[0014] The forming mechanism includes a partition, two of which are symmetrically arranged on the right end surface of the U-shaped plate, the upper partition is slidingly connected to the U-shaped plate, and the lower partition is fixedly connected to the U-shaped plate. The lower end surface of the lower partition is fixedly connected to four support blocks arranged in a matrix and overlapped on the workbench surface, and the end surfaces of the two partitions close to each other are fixedly connected to a partition bar group, and the partition bar group consists of two partition bars that are symmetrical front to back and extend in the left and right directions. A plurality of partitions are evenly connected between the two partitions, and the partitions consist of an H-shaped plate with a rectangular groove on the right end surface and two rectangular plates symmetrically fixedly connected to the front and rear ends of the H-shaped plate, and the partition and the rectangular plate are commonly connected to a closing assembly.

[0015] The opening and closing assembly includes a limit rod group, which is composed of two limit rods that are symmetrical in the left and right and are symmetrically arranged in the front and back. The lower end of the limit rod slides through the upper enclosure and the rectangular plate and is fixedly connected to the lower enclosure. The upper end of the limit rod is fixedly connected to the limit block. The enclosure and the rectangular plate, and the upper and lower adjacent rectangular plates are all connected through a connecting module. The two limit rod groups are commonly connected with a trigger assembly, which is used to push the various connecting modules from bottom to top to open one after another. Two slide grooves are symmetrically provided on the right side of the operating table. A linkage mechanism is commonly connected in the two slide grooves. A demoulding mechanism is connected to the linkage mechanism. A cylinder is connected to the right side of the linkage mechanism, and the cylinder is fixedly connected to the operating table.

[0016] Preferably, the connecting module located at the lower left side includes an articulated seat, a rectangular ring, a connecting block and a trapezoidal block, and two articulated seats are symmetrically fixedly connected on the end surfaces of the enclosure and the rectangular plate. The two articulated seats are rotatably connected with the rectangular rings, and the two rectangular rings are rotatably connected with the connecting block at one end away from the articulated seat. The upper and lower ends of the connecting block are respectively abutted and connected with the rectangular plate and the enclosure, and the end of the connecting block away from the articulated seat is fixedly connected with the trapezoidal block, and the connecting modules at other positions have the same structure as the connecting module at the lower left side.

[0017] Preferably, the trigger assembly includes a round rod, a push plate, a U-shaped frame and a C-shaped frame. A round rod is rotatably connected between two support blocks located on the same straight line left and right. A push plate is rotatably connected to the round rod. The two push plates are symmetrically arranged front and back, and the front-back distance between them gradually decreases from top to bottom. The end face of the push plate close to the rectangular plate fits against the inclined surface of the lowermost trapezoidal block. A long strip-shaped notch is opened on the upper end face of the push plate, and a让位槽 (letting-through groove) matching the push plate is opened on the surrounding plate. A U-shaped frame is slidably connected to the two limiting rod groups. A driving source for driving its up and down movement is fixedly connected to the upper end face of the U-shaped frame. Two C-shaped frames are fixedly connected to the U-shaped frame symmetrically front and back. The horizontal section of the C-shaped frame located above penetrates and overlaps in the notch, and the horizontal section below the C-shaped frame abuts against the lower end of the push plate.

[0018] Preferably, the linkage mechanism includes an L-shaped sliding seat, a first guide rod, a second guide rod, a kidney-shaped connecting plate and a lifting assembly. Two L-shaped sliding seats are symmetrically arranged front and back. The two L-shaped sliding seats are slidably connected in the two sliding grooves. Horizontal guide grooves and vertical guide grooves are respectively opened through the front and back on the horizontal section and the vertical section of the L-shaped sliding seat. A first guide rod is slidably connected in the two horizontal guide grooves. The first guide rod is located at the leftmost end of the horizontal guide groove, and the first guide rod is fixedly connected to the piston rod of the air cylinder. The air cylinder is fixedly connected to the operation table. A second guide rod is slidably connected in the vertical guide groove. The second guide rod is located at the lowermost end of the vertical guide groove. The front and rear ends of the first guide rod and the two second guide rods are hinged to each other through a kidney-shaped connecting plate. A lifting assembly is connected to the two second guide rods.

[0019] Preferably, the lifting assembly includes a U-shaped sliding seat, a folding plate and a vertical rod. The U-shaped sliding seat is slidably connected to the vertical section of the L-shaped sliding seat, and the U-shaped sliding seat is fixedly connected to the second guide rod. A folding plate is fixedly connected to the upper ends of the two U-shaped sliding seats. A vertical rod is fixedly connected to the upper end face of the horizontal section below the folding plate. An electromagnet is arranged inside the vertical rod. Limiting grooves are symmetrically opened on the front and back side walls of the vertical rod. A demolding mechanism is connected to the vertical rod.

[0020] Preferably, the demolding mechanism includes an annular sleeve, a return spring, a pushing component, a shovel knife group and a pressing component. The annular sleeve is made of metal and is uniformly arranged on the vertical rod in multiple numbers. The lowermost annular sleeve is fixedly connected to the vertical rod, and the remaining annular sleeves are slidably connected to the vertical rod. Two convex blocks matching the limiting grooves are fixedly connected to the front and back of the inner wall of the annular sleeve. The convex blocks are slidably connected in the limiting grooves. The adjacent two annular sleeves are connected by a return spring. A pushing component is connected to the left side of the outer wall of the annular sleeve. The left end of the pushing component is connected to a shovel knife group. The shovel knife group is composed of two shovel knives symmetrically arranged front and back. A pressing component is connected to the right side of the lower end face of the lowermost shovel knife group.

[0021] Preferably, the pushing assembly includes a push-pull rod, an annular paddle, a pushing seat, a hinge plate, an L-shaped connecting seat, a knife seat and a supporting column, the right end of the push-pull rod is fixedly connected to the annular sleeve, the left and right fixed sleeves of the push-pull rod are provided with two annular paddles, and the push-pull rod is also slidably provided with a pushing seat, the pushing seat is located between the two annular paddles, the front and rear ends of the pushing seat are rotatably connected to one end of the hinge plate, the other end of the hinge plate is rotatably connected to the L-shaped connecting seat, the right end face of the longitudinal section of the L-shaped connecting seat is fixedly connected at the hinge with a limit plate for limiting the right rotation of the hinge plate, the left end of the L-shaped connecting seat is fixedly connected to the knife seat, a scraper is fixedly connected inside the knife seat, and the upper end face of the knife seat is fixedly connected to a supporting column for maintaining a certain distance between the knife seat and the knife seat in a natural state.

[0022] Preferably, the clamping assembly includes a telescopic rod, a ball bearing, a bar magnet and an L-shaped magnet. The telescopic rod is telescopic in the up-down direction and two telescopic rods are symmetrically fixedly connected to the lower end face of the lowest knife seat in the front and rear directions. A ball bearing is rollingly embedded in the lower end of the telescopic rod. The left end faces of the movable sections of the two telescopic rods are fixedly connected with bar magnets. An L-shaped magnet matching the two bar magnets is commonly arranged on the left side of the two bar magnets, and the L-shaped magnet is fixedly connected to the operating table.

[0023] The beneficial effects of the present invention are as follows: 1. The trigger component and the opening and closing component in the molding mechanism of the present invention cooperate with each other, and will exert a force during grouting to make the various partitions close to each other to form a grouting area. After the slurry is formed in the grouting area and the surface is dry, the trigger component and the opening and closing component cooperate to drive the various partitions to separate from bottom to top in sequence, thereby separating the substrate between the partitions from the upper partition. During this process, the scraper group in the demolding mechanism will be in close contact with the lower partition in the grouting area one by one during the movement of the partition, and then when the scraper group is fed under the push of the linkage mechanism, the substrate can be separated from the partition, thereby taking all substrates out of the grouting area at one time, thereby improving the demolding efficiency.

[0024] 2. When the linkage mechanism of the present invention drives the demoulding mechanism to withdraw from the grouting area, the linkage mechanism will first drive the demoulding mechanism to rise as a whole and then separate the scraper group from the partition, so that the substrate will not contact the lower partition when withdrawing, so as to avoid the friction between the two and the impact on the substrate. Before retreating, the linkage mechanism will also indirectly drive the two scrapers in the scraper group to move away from each other, while separating the front and rear edges of the substrate from the partition, and can also lift the substrate from the front and rear sides during the retreat process to ensure the stability of the substrate during the retreat process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 It is a process flow chart of the present invention.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the alumina substrate forming device provided in an embodiment of the present invention.

[0028] Figure 3 It is a three-dimensional structural schematic diagram of an operating table, a U-shaped plate and a forming mechanism in an alumina substrate forming device provided in an embodiment of the present invention.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the U-shaped plate and the molding mechanism in the grouting state in the alumina substrate molding device provided by an embodiment of the present invention.

[0030] Figure 5 The present invention Figure 4 Top view of the .

[0031] Figure 6 The present invention Figure 5 A partial enlarged view of point A in the middle.

[0032] Figure 7 It is a three-dimensional structural schematic diagram of the linkage mechanism and the demoulding mechanism in the alumina substrate molding device provided in an embodiment of the present invention.

[0033] Figure 8 It is a partial three-dimensional structural schematic diagram of the linkage mechanism and the demoulding mechanism in the alumina substrate molding device provided in an embodiment of the present invention.

[0034] Fig. 9 The present invention Figure 8 A partial enlarged view of point B in the middle.

[0035] Fig.10 The diagram is a diagram showing the state changes before and after the linkage mechanism in an alumina substrate forming device of the present invention moves.

[0036] Fig.11 It is a three-dimensional structural schematic diagram of the connection module of the present invention.

[0037] In the figure: 1. Operating table; 11. U-shaped groove; 12. Slide groove; 2. U-shaped plate; 3. Forming mechanism; 31. Enclosing plate; 32. Support block; 33. Partition strip group; 34. Partition board; 341. H-shaped plate; 342. Rectangular plate; 343. Rectangular groove; 35. Opening and closing assembly; 351. Limit rod group; 352. Limit block; 353. Connection module; 3531. Hinge seat; 3532. Rectangular ring; 3533. Connecting block; 3534. Trapezoidal block; 36. Trigger assembly; 361. Round rod; 362. Push plate; 3621. Notch; 363. I-shaped frame; 364. C-shaped frame; 4. Linkage mechanism; 41. L-shaped sliding seat; 411. Horizontal guide groove; 412. Vertical guide groove; 42. First guide rod; 43. Second guide rod; 44. Waist-shaped connecting plate; 45. Lifting assembly; 451. U-shaped sliding seat; 452. Folding plate; 453. Vertical rod; 4531. Limit groove; 5. Demolding mechanism; 51. Annular sleeve; 52. Return spring; 53. Pushing assembly; 531. Push-pull rod; 532. Annular dial; 533. Pushing seat; 534. Hinge plate; 535. L-shaped connecting seat; 5351. Limit plate; 536. Tool holder; 537. Support column; 54. Shovel blade group; 55. Tightening assembly; 551. Telescopic rod; 552. Ball; 553. Strip magnet; 554. L-shaped magnet; 6. Cylinder. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the invention can be implemented in many different ways defined and covered by the claims.

[0039] Refer to Figure 2 and Figure 3 , an alumina substrate production process based on the water slurry casting method, which is completed in cooperation with an alumina substrate forming device. The alumina substrate forming device includes an operating table 1, a U-shaped plate 2, a forming mechanism 3, a linkage mechanism 4, a demolding mechanism 5 and a cylinder 6. A U-shaped groove 11 is opened at a position on the left side of the tabletop of the operating table 1. A U-shaped plate 2 with an opening to the left is slidably inserted and fitted in the U-shaped groove 11. The right end face of the U-shaped plate 2 is connected with a forming mechanism 3. Two slide grooves 12 are symmetrically arranged front and back at a position on the right side of the tabletop of the operating table 1. A linkage mechanism 4 is connected in the two slide grooves 12 together. A demolding mechanism 5 is connected to the linkage mechanism 4. The right side of the linkage mechanism 4 is connected with a cylinder 6 that pushes it to move left and right. The cylinder 6 is fixedly connected to the operating table 1.

[0040] Refer to Figure 3 and Figure 4The forming mechanism 3 includes a panel 31, a support block 32, a spacer bar group 33, a partition 34, an opening and closing assembly 35 and a trigger assembly 36. The panel 31 is symmetrically arranged on the right end surface of the U-shaped plate 2. The upper panel 31 is slidably connected to the U-shaped plate 2, and the lower panel 31 is fixedly connected to the U-shaped plate 2. The lower end surface of the lower panel 31 is fixedly connected to four support blocks 32 arranged in a matrix. The four support blocks 32 are overlapped on the surface of the operating table 1. The end surfaces of the two panels 31 close to each other are fixedly connected. The partition bar group 33 is composed of two partition bars that are symmetrical front to back and extend in the left-right direction. A plurality of partition plates 34 are arranged between the two enclosures 31 from top to bottom. The partition plates 34 are composed of an H-shaped plate 341 that matches the partition bar group 33 and two rectangular plates 342 that are symmetrically fixed to the front and rear ends of the H-shaped plates 341. A rectangular groove 343 is provided on the right end face of the H-shaped plate 341. An opening and closing assembly 35 is commonly connected to the enclosure 31 and the rectangular plate 342. A trigger assembly 36 is connected to the opening and closing assembly 35.

[0041] See also Figure 2 , Figure 3 and Figure 4 During the specific operation, a plurality of rectangular cavity areas are formed between the enclosure 31, the spacer bar group 33 and the H-shaped plate 341 as the grouting area. In the initial state, the U-shaped plate 2 is placed horizontally on the operating table 1, and the H-shaped plate 341 is placed vertically. Figure 4 As shown, the position of the U-shaped plate 2 is taken as the bottom of the grouting area, and the opening of the grouting area is upward. At this time, the prepared slurry can be poured into the grouting area, and the liquid level of the slurry is not higher than the lowest point of the rectangular groove 343. After a period of time, when the slurry is formed into a substrate in the grouting area and the surface of the substrate is dry, the U-shaped plate 2 is adjusted to a vertical state and its lower end is inserted into the U-shaped groove 11. At this time, the support block 32 is abutted on the operating table 1, and the opening of the grouting area is to the right.

[0042] Then, the cylinder 6 pushes the linkage mechanism 4 and the demoulding mechanism 5 to move a certain distance to the left, so that the left end of the demoulding mechanism 5 is inserted into the grouting area. After that, the trigger component 36 drives the opening and closing component 35 to separate the partitions 34 from bottom to top in sequence, so that the substrates in the grouting area are separated from the upper partitions 34. In this process, the demoulding mechanism 5 also changes with the position of the partitions 34. Then, the cylinder 6 continues to push the linkage mechanism 4 and the demoulding mechanism 5 to move to the left, so that the formed substrate is separated from the lower partition 34 in the grouting area. Finally, the cylinder 6 pulls the linkage mechanism 4 and the demoulding mechanism 5 to move to the right synchronously, and all substrates are taken out of the grouting area. The above process is repeated to achieve overall rapid demoulding with high demoulding efficiency.

[0043] See also Figure 3 and Figure 5, the opening and closing assembly 35 includes a limit rod group 351, a limit block 352 and a connection module 353. The limit rod group 351 is composed of two symmetrically arranged left and right limit rods. There are two groups of limit rod groups 351 symmetrically arranged front and back. The lower ends of the limit rods slide through the upper enclosure 31 and the rectangular plate 342 and are fixedly connected to the lower enclosure 31. The upper ends of the limit rods are fixedly connected with the limit block 352. Between the lower enclosure 31 and the lowermost rectangular plate 342, between the upper enclosure 31 and the uppermost rectangular plate 342, and between adjacent upper and lower rectangular plates 342 are all connected by the connection module 353. A trigger assembly 36 is commonly connected to the two limit rod groups 351.

[0044] Refer to Figure 6 and Fig.11 , the connection module 353 located in the lower left includes a hinge seat 3531, a rectangular ring 3532, a connecting block 3533 and a trapezoidal block 3534. Two hinge seats 3531 are symmetrically and fixedly connected to the end faces of the enclosure 31 and the rectangular plate 342 close to each other up and down. A rectangular ring 3532 is rotatably connected to each of the two hinge seats 3531. The ends of the two rectangular rings 3532 away from the hinge seats 3531 are commonly rotatably connected to a connecting block 3533. In the initial state, the upper and lower ends of the connecting block 3533 are respectively in contact and connected with the rectangular plate 342 and the enclosure 31. One end of the connecting block 3533 away from the hinge seat 3531 is fixedly connected with a trapezoidal block 3534. The connection modules 353 in other positions have the same structure as the connection module 353 in the lower left.

[0045] Refer to Figure 3-Figure 6 , the trigger assembly 36 includes a round rod 361, a push plate 362, an I-shaped frame 363 and a C-shaped frame 364. A round rod 361 is rotatably connected between two support blocks 32 located on the same straight line left and right. A push plate 362 is rotatably connected to the round rod 361. The two push plates 362 are symmetrically arranged front and back and the front and back distance between them gradually decreases from top to bottom. In the initial state, the end face of the push plate 362 close to the rectangular plate 342 is in contact with the inclined surface of the lowermost trapezoidal block 3534. A long strip-shaped notch 3621 is opened on the upper end face of the push plate 362. A relief groove matching the push plate 362 is opened on the enclosure 31. An I-shaped frame 363 is commonly slidably connected to the two limit rod groups 351. An external electric push rod for driving its up and down movement is fixedly connected to the upper end face of the I-shaped frame 363. Two C-shaped frames 364 are symmetrically and fixedly connected to the I-shaped frame 363 front and back. The horizontal section of the C-shaped frame 364 located above penetrates and overlaps in the notch 3621, and the horizontal section below the C-shaped frame 364 abuts against the lower end of the push plate 362.

[0046] During specific operation, after the substrate is formed and its surface is dried, the U-shaped plate 2 is inserted into the U-shaped groove 11. In the initial state, the two push plates 362 are arranged in an inverted V shape. The end face of the push plate 362 close to the rectangular plate 342 is in contact with the inclined surface of the lowermost trapezoidal block 3534. At this time, each H-shaped plate 341 is pressed against each other under the pressing of the external driving source on the I-shaped frame 363, and the end face of the push plate 362 close to the rectangular plate 342 is in contact with the inclined surface of the lowermost trapezoidal block 3534.

[0047] Then, the cylinder 6 is used to push the linkage mechanism 4 to drive the left end of the demolding mechanism 5 to be inserted into the grouting area. Then, the external driving source is used to drive the I-shaped frame 363 to move upward. During the upward movement of the I-shaped frame 363, the C-shaped frame 364 also moves upward synchronously. Furthermore, the horizontal section below the C-shaped frame 364 drives the push plate 362 to rotate towards the direction where the trapezoidal block 3534 is located. During the rotation of the push plate 362, it will contact each trapezoidal block 3534 in sequence from bottom to top, and drive the trapezoidal block 3534 and the connecting block 3533 to move towards the direction where the H-shaped plate 341 is located. During the movement of the connecting block 3533, the included angle between the two rectangular rings 3532 on the same connecting block 3533 increases. Furthermore, each rectangular plate 342 is driven to move upward in sequence from bottom to top. As a result, each substrate in the grouting area is also separated from the H-shaped plate 341 above in the grouting area in sequence and remains on the H-shaped plate 341 below in the grouting area. It should be noted that during the movement of the corresponding connecting block 3533, it will gradually separate from the lower enclosing plate 31, the rectangular plate 342, and the upper enclosing plate 31.

[0048] When the push plate 362 changes from inclined to vertical under the abutment of the C-shaped frame 364, each trapezoidal block 3534 is pushed between two adjacent rectangular plates 342. At this time, the adjacent H-shaped plates 341 are separated from each other, and the partition strip group 33 on the enclosing plate 31 is also separated from the H-shaped plate 341. The substrate is on the H-shaped plate 341 below in the grouting area.

[0049] Refer to Figure 7The linkage mechanism 4 includes an L-shaped slide 41, a No. 1 guide rod 42, a No. 2 guide rod 43, a waist-shaped connecting plate 44 and a lifting assembly 45. The L-shaped slide 41 is symmetrically arranged with two front and rear, and the two L-shaped slides 41 are slidably connected in the two slide grooves 12. The horizontal section and the vertical section of the L-shaped slide 41 are respectively provided with a horizontal guide groove 411 and a vertical guide groove 412. The two horizontal guide grooves 411 are slidably connected with the No. 1 guide rod 42, which is located at the leftmost end of the horizontal guide groove 411, and the No. 1 guide rod 42 is fixedly connected to the piston rod of the cylinder 6. The No. 2 guide rod 43 is slidably connected in the vertical guide groove 412, and the No. 2 guide rod 43 is located at the lower end of the vertical guide groove 412. The front and rear ends of the No. 1 guide rod 42 and the two No. 2 guide rods 43 are hingedly connected by a waist-shaped connecting plate 44, and the two No. 2 guide rods 43 are commonly connected with a lifting assembly 45.

[0050] See also Figure 7 The lifting assembly 45 includes a U-shaped slide 451, a folding plate 452 and a vertical rod 453. The U-shaped slide 451 is slidably connected to the vertical section of the L-shaped slide 41, and the U-shaped slide 451 is fixedly connected to the second guide rod 43. The upper ends of the two U-shaped slides 451 are fixedly connected with the folding plate 452. The upper end surface of the horizontal section below the folding plate 452 is fixedly connected with the vertical rod 453. An electromagnet is arranged in the vertical rod 453. The side wall of the vertical rod 453 is symmetrically provided with a limiting groove 4531. The vertical rod 453 is connected to the demoulding mechanism 5.

[0051] See also Figure 7 and Fig. 9 The demoulding mechanism 5 includes an annular sleeve 51, a return spring 52, a push assembly 53, a scraper group 54 and a close assembly 55. The annular sleeve 51 is made of metal. A plurality of annular sleeves 51 are evenly arranged on the vertical rod 453. The lowest annular sleeve 51 is fixedly connected to the vertical rod 453, and the remaining annular sleeves 51 are slidably connected to the vertical rod 453. Two protrusions that match the limiting groove 4531 are fixedly connected to the inner wall of the annular sleeve 51 symmetrically in the front and back. The protrusions are slidably connected in the limiting groove 4531. Two adjacent annular sleeves 51 are connected by a return spring 52, and the return spring 52 is sleeved on the vertical rod 453. The outer wall of the annular sleeve 51 is connected with a push assembly 53 at the left position, and the left end of the push assembly 53 is connected with a scraper group 54. The scraper group 54 is composed of two scrapers symmetrically in the front and back. The lower end surface of the lowest scraper group 54 is connected with a close assembly 55 at the right position.

[0052] See also Figure 7-Figure 10During specific operation, at the beginning, the L-shaped slide 41 is located on the right side of the slide groove 12, the No. 1 guide rod 42 is located at the leftmost end of the horizontal guide groove 411, the No. 2 guide rod 43 is located at the lower end of the vertical guide groove 412, and the waist-shaped connecting plate 44 is tilted to the right. After the U-shaped plate 2 is plugged into the U-shaped groove 11, the front and rear ends of the No. 1 guide rod 42 are pushed to the left by the cylinder 6, and then the L-shaped slide 41, the U-shaped slide 451, the folding plate 452 and the vertical rod 453 also move to the left synchronously, and the annular sleeve 51 and the pushing assembly 53 make the scraper group 54 also move to the left and be respectively plugged into each grouting area. At this time, the left end of the scraper group 54 does not contact the substrate, and the lower end of the lowest scraper group 54 is in contact with the upper end surface of the lower enclosure 31, and the remaining scraper groups 54 are inserted in each grouting area. At this time, the electromagnet in the vertical rod 453 is in a power-off state.

[0053] Afterwards, when the external electric push rod drives the I-shaped frame 363 to move upward, and then indirectly drives each H-shaped plate 341 to separate, except for the lowest annular sleeve 51 and the scraper group 54, the remaining annular sleeves 51 and the scraper group 54 are synchronously moved upward under the drive of the H-shaped plate 341. At the same time, under the traction of the return spring 52, the scraper group 54 and the H-shaped plate 341 remain in close contact, and then the cylinder 6 continues to indirectly push the scraper group 54 to move left, so that the substrate is gradually separated from the H-shaped plate 341 located below in the grouting area.

[0054] When the scraper group 54 reaches the leftmost end, the substrate is completely separated from the H-shaped plate 341 located below in the grouting area. At this time, the electromagnet in the vertical rod 453 is energized, and then each annular sleeve 51 is adsorbed and fixed by magnetic force to prevent the annular sleeve 51 from sliding downward under the traction of the return spring 52. Then, the cylinder 6 drives the No. 1 guide rod 42 to move right along the horizontal guide groove 411. Before the No. 1 guide rod 42 reaches the right side of the horizontal guide groove 411, the L-shaped slide 41 remains stationary, and the lower end of the waist-shaped connecting plate 44 moves to the right synchronously with the No. 1 guide rod 42. The No. 2 guide rod 43 moves upward along the vertical guide groove 412 driven by the waist-shaped connecting plate 44, and then the U-shaped slide 451, the folding plate 452 and the vertical rod 453 also move upward synchronously, indirectly driving the scraper group 54 to move upward synchronously, lifting the substrate to a certain height, and further separating the substrate from the H-shaped plate 341 located below in the grouting area.

[0055] See also Fig.10Finally, when the No. 1 guide rod 42 reaches the rightmost end of the horizontal guide groove 411, as the cylinder 6 continues to pull to the right, the L-shaped slide 41 is driven to move to the right, driving the U-shaped slide 451, the folding plate 452 and the vertical rod 453 to move to the right. At this time, under the action of the clamping component 55, the pushing component 53 changes, driving the two scrapers in the scraper group 54 to separate from each other, further separating the front and rear sides of the substrate from the H-shaped plate 341 located below in the grouting area. After that, as the L-shaped slide 41 continues to move to the right, the clamping component 55 changes, and the scraper group 54 lifts the substrate out of the grouting area, and the substrates are taken out one by one manually. To facilitate the next demoulding, the electromagnet in the vertical rod 453 is powered off again, and each annular sleeve 51 is reset under the traction of the reset spring 52.

[0056] See also Figure 8 and Fig. 9 The push assembly 53 includes a push-pull rod 531, an annular paddle 532, a push seat 533, a hinge plate 534, an L-shaped connecting seat 535, a knife seat 536 and a support column 537. The right end of the push-pull rod 531 is fixedly connected to the annular sleeve 51. Two annular paddles 532 are fixedly sleeved on the push-pull rod 531. A push seat 533 is also slidably sleeved on the push-pull rod 531. The push seat 533 is located between the two annular paddles 532. The front and rear ends of the push seat 533 are both connected to the hinge plate 534. One end is rotatably connected, and the other end of the hinged plate 534 is rotatably connected to an L-shaped seat 535. The right end face of the longitudinal section of the L-shaped seat 535 is fixedly connected at the hinge with a limit plate 5351 for limiting the hinged plate 534 from rotating to the right. The left end of the L-shaped seat 535 is fixedly connected to a knife seat 536. A scraper is fixedly connected inside the knife seat 536. The upper end face of the knife seat 536 is fixedly connected to a support column 537. In the initial state, the upper ends of the support columns 537 abut against the lower end face of the knife seat 536 above it.

[0057] See also Figure 8 The clamping component 55 includes a telescopic rod 551, a ball 552, a bar magnet 553 and an L-shaped magnet 554. The telescopic rod 551 is telescopic in the up-down direction and two telescopic rods 551 are symmetrically fixedly connected to the lower end face of the lowest knife seat 536. The lower end of the telescopic rod 551 is rollingly embedded with a ball 552. The left end faces of the movable sections of the two telescopic rods 551 are fixedly connected with bar magnets 553. The left sides of the two bar magnets 553 are jointly provided with an L-shaped magnet 554 that matches the two bar magnets. The L-shaped magnet 554 is fixedly connected to the operating table 1.

[0058] See also Figure 7-Figure 9During specific operation, before the blade group 54 enters the grouting area, the two blades in the blade group 54 move away from each other, and the two hinged plates 534 are located on the same straight line front and back. At this time, the annular paddle 532 on the left is in contact with the left end surface of the push seat 533. When the vertical rod 453 moves to the left with the folding plate 452 and the L-shaped sliding seat 41, it will drive the push-pull rod 531 to move to the left, and then push the push seat 533 to move to the left through the annular paddle 532 on the right, so that the two hinged plates 534 are synchronously tilted to the left, thereby driving the two knife seats 536 and the two blades to approach each other through the two L-shaped connecting seats 535, and inserting them under the substrate in a closed state, so that the substrate is separated from the H-shaped plate 341 located below in the grouting area.

[0059] When the vertical rod 453 reaches the leftmost side under the push of the cylinder 6, the two bar magnets 553 contact the L-shaped magnet 554 and are fixed by the magnetic force. Therefore, when the vertical rod 453 moves to the right along with the folding plate 452 and the L-shaped sliding seat 41, the telescopic rod 551, the knife seat 536, the scraper and the L-shaped connecting seat 535 remain stationary during the process of the bar magnet 553 and the L-shaped magnet 554 attracting each other. At this time, the push-pull rod 531 moves to the right relative to the push seat 533 under the action of the vertical rod 453 and the annular sleeve 51, The annular paddle 532 on the left side pushes the push seat 533 to move rightward, thereby driving the two hinged plates 534 to rotate rightward and reset synchronously, and the two scrapers in the scraper group 54 are also reset to a separated state. Then, as the vertical rod 453 continues to move rightward, the two bar magnets 553 are separated from the L-shaped magnet 554 under the action of pulling force. When the two separated scrapers lift the substrate out of the grouting area, the front and rear edges of the substrate can be prevented from collapsing, thereby ensuring the level of the substrate as much as possible and preventing the substrate from deforming during the removal process.

[0060] See also Figure 1-Figure 6 , using the above-mentioned alumina substrate forming device to carry out an alumina substrate production process based on a slurry casting method, comprising the following steps:

[0061] S1. Slurry preparation: prepare alumina powder, dispersant, pH adjuster and gelling agent in a certain proportion, and mix these ingredients in water to form a stable slurry.

[0062] S2. Injection molding: Lay the U-shaped plate 2 flat so that the enclosure 31 and the partition 34 are in a vertical state. At this time, the multiple rectangular cavity areas formed by the enclosure 31, the partition bar group 33 and the H-shaped plate 341 are grouting areas. Slurry is injected into the grouting area, and the slurry liquid level is not higher than the lowest point of the rectangular groove 343 on the H-shaped plate 341.

[0063] S3, demoulding: After the slurry is formed into a substrate in the grouting area and the surface is dry, the U-shaped plate 2 is inserted into the U-shaped groove 11, and the lower end of the support block 32 is attached to the operating table 1. At this time, the cylinder 6 is started, and the cylinder 6 drives the linkage mechanism 4 and the demoulding mechanism 5 to move synchronously to the left to the grouting area without contacting the substrate. Then, the trigger component 36 drives the opening and closing component 35 to change, so that each partition 34 is separated from bottom to top in sequence. In this process, the scraper group 54 also moves synchronously with the movement of the partition 34. And fit with the corresponding partition 34, then continue to push the linkage mechanism 4 and the demoulding mechanism 5 to move synchronously to the left through the cylinder 6, and then the substrate is separated from the H-shaped plate 341 through the scraper group 54, and then the linkage mechanism 4 and the demoulding mechanism 5 are moved synchronously to the right through the cylinder 6. In this process, the two scrapers in the scraper group 54 are separated synchronously to avoid the front and rear edges of the substrate from collapsing, and then as the scraper group 54 continues to move to the right with the linkage mechanism 4, the substrate can be lifted out of the grouting area, and then the substrate is removed manually.

[0064] S4, drying: drying the removed substrate to remove excess moisture. The temperature and humidity need to be controlled during the drying process to avoid deformation or cracking.

[0065] S5. Sintering: The dried substrate is sintered at high temperature to further improve its density and compactness.

[0066] S6. Post-processing: Grinding and polishing the sintered substrate to achieve a specific dimensional accuracy and flatness.

[0067] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "oil level", "top", "bottom", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots" and "multiple groups" mean two or more.

[0068] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The embodiments of this specific implementation method are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A process for producing an alumina substrate based on a slurry casting method, characterized in that: The following steps are involved: S1. Slurry preparation: prepare alumina powder, dispersant, pH adjuster and gelling agent in proportion, and mix these ingredients in water to form a stable slurry; S2, injection molding: inject the slurry in S1 into the mold; S3, demoulding: after the slurry is formed into a substrate in the grouting area and the surface is dry, the substrate is taken out; S4, drying: drying the taken-out substrate to remove excess water therein. The temperature and humidity need to be controlled during the drying process to avoid deformation or cracking; S5, sintering: sintering the dried substrate at high temperature to further improve its density and compactness; S6, post-processing: grinding and polishing the sintered substrate to achieve a specific dimensional accuracy and flatness; Wherein S3 is completed by an aluminum oxide substrate molding device, the aluminum oxide substrate molding device comprises an operating table (1), a U-shaped groove (11) is provided on the left side of the operating table (1), a U-shaped plate (2) is slidably inserted in the U-shaped groove (11), and a molding mechanism (3) is connected to the right end surface of the U-shaped plate (2); The forming mechanism (3) comprises a panel (31), wherein two panels (31) are symmetrically arranged on the right end surface of the U-shaped plate (2), the upper panel (31) is slidably connected to the U-shaped plate (2), the lower panel (31) is fixedly connected to the U-shaped plate (2), the lower end surface of the lower panel (31) is fixedly connected to four support blocks (32) arranged in a matrix and overlapped on the surface of the operating table (1), and the end surfaces of the two panels (31) close to each other are fixedly connected to A partition bar group (33), the partition bar group (33) is composed of two partition bars that are symmetrical in front and back and extend in the left and right direction, a plurality of partition plates (34) are evenly connected between the two enclosures (31) up and down, the partition plates (34) are composed of an H-shaped plate (341) with a rectangular groove (343) opened on the right end surface and two rectangular plates (342) symmetrically fixedly connected to the front and rear ends of the H-shaped plate (341), and the enclosure (31) and the rectangular plates (342) are commonly connected to an opening and closing assembly (35); The opening and closing assembly (35) comprises a limit rod group (351), wherein the limit rod group (351) is composed of two limit rods that are symmetrical in left and right directions and are arranged in two groups symmetrically in front and back directions. The lower end of the limit rod slides through the upper enclosure (31) and the rectangular plate (342) and is fixedly connected to the lower enclosure (31). The upper end of the limit rod is fixedly connected to the limit block (352). The enclosure (31) and the rectangular plate (342), as well as the upper and lower adjacent rectangular plates (342), are all connected via a connecting module (353). The two limit rod groups (351) are commonly connected with a trigger assembly (36), and the trigger assembly (36) is used to push each connection module (353) to open successively from bottom to top. Two slide grooves (12) are symmetrically arranged at the right position on the operating table (1), and a linkage mechanism (4) is commonly connected in the two slide grooves (12). The linkage mechanism (4) is connected with a demoulding mechanism (5), and the right side of the linkage mechanism (4) is connected with a cylinder (6), and the cylinder (6) is fixedly connected to the operating table (1).

2. The process for producing an alumina substrate based on a slurry casting method according to claim 1, characterized in that: The connection module (353) located at the lower left includes a hinge seat (3531), a rectangular ring (3532), a connecting block (3533), and a trapezoidal block (3534). Two hinge seats (3531) are symmetrically and fixedly connected to the upper and lower ends of the end face where the enclosing plate (31) and the rectangular plate (342) are close to each other. A rectangular ring (3532) is rotatably connected to each of the two hinge seats (3531). One end of the two rectangular rings (3532) away from the hinge seats (3531) is rotatably connected to a connecting block (3533) in common. The upper and lower ends of the connecting block (3533) are respectively in abutting connection with the rectangular plate (342) and the enclosing plate (31). One end of the connecting block (3533) away from the hinge seat (3531) is fixedly connected to a trapezoidal block (3534). The connection modules (353) in other positions have the same structure as the connection module (353) at the lower left.

3. The process for producing an alumina substrate based on a slurry casting method according to claim 2, characterized in that: The trigger assembly (36) includes a round rod (361), a push plate (362), an I-shaped frame (363), and a C-shaped frame (364). A round rod (361) is rotatably connected between two support blocks (32) that are on the same straight line horizontally. A push plate (362) is rotatably connected to the round rod (361). The two push plates (362) are symmetrically arranged front and back, and the front-to-back distance between the two gradually decreases from top to bottom. The end face of the push plate (362) close to the rectangular plate (342) is in fit with the inclined surface of the lowermost trapezoidal block (3534). A long strip-shaped notch (3621) is formed in the upper end face of the push plate (362). A relief groove matching the push plate (362) is formed in the enclosing plate (31). An I-shaped frame (363) is slidably connected to the two limiting rod groups (351) in common. A driving source for driving the I-shaped frame (363) to move up and down is fixedly connected to the upper end face of the I-shaped frame (363). Two C-shaped frames (364) are symmetrically and fixedly connected to the I-shaped frame (363) front and back. The horizontal section of the C-shaped frame (364) located above penetrates and abuts in the notch (3621), and the horizontal section below the C-shaped frame (364) abuts against the lower end of the push plate (362).

4. The process for producing an alumina substrate based on a slurry casting method according to claim 3, characterized in that: The linkage mechanism (4) comprises an L-shaped slide (41), a first guide rod (42), a second guide rod (43), a waist-shaped connecting plate (44) and a lifting assembly (45). Two L-shaped slides (41) are symmetrically arranged in front and back. The two L-shaped slides (41) are slidably connected in two slide grooves (12). The horizontal section and the vertical section of the L-shaped slide (41) are respectively provided with a horizontal guide groove (411) and a vertical guide groove (412) running through the front and back. The two horizontal guide grooves (411) are slidably connected with the first guide rod (42). The first guide rod (43) is slidably connected to the first guide rod. (42) is located at the leftmost end of the horizontal guide groove (411), and the first guide rod (42) is fixedly connected to the piston rod of the cylinder (6), and the cylinder (6) is fixedly connected to the operating table (1). The second guide rod (43) is slidably connected in the vertical guide groove (412), and the second guide rod (43) is located at the lowermost end of the vertical guide groove (412). The front and rear ends of the first guide rod (42) and the two second guide rods (43) are hingedly connected through a waist-shaped connecting plate (44), and the two second guide rods (43) are commonly connected with a lifting assembly (45).

5. The process for producing an alumina substrate based on slurry casting according to claim 4, characterized in that: The lifting assembly (45) comprises a U-shaped slide (451), a folding plate (452) and a vertical rod (453); the U-shaped slide (451) is slidably connected to the vertical section of the L-shaped slide (41), and the U-shaped slide (451) is fixedly connected to the second guide rod (43); the upper ends of the two U-shaped slides (451) are fixedly connected to the folding plate (452); the upper end surface of the horizontal section below the folding plate (452) is fixedly connected to the vertical rod (453); an electromagnet is arranged in the vertical rod (453); a limiting groove (4531) is symmetrically provided on the side wall of the vertical rod (453); and a demoulding mechanism (5) is connected to the vertical rod (453).

6. The process for producing an alumina substrate based on slurry casting according to claim 5, characterized in that: The demoulding mechanism (5) comprises an annular sleeve (51), a return spring (52), a push assembly (53), a scraper assembly (54) and a close assembly (55). The annular sleeve (51) is made of metal and a plurality of annular sleeves (51) are evenly arranged on the vertical rod (453). The lowest annular sleeve (51) is fixedly connected to the vertical rod (453), and the remaining annular sleeves (51) are slidably connected to the vertical rod (453). The inner wall of the annular sleeve (51) is symmetrically fixedly connected to two stopper grooves ( The protrusion (51) is matched with the protrusion (4531), the protrusion is slidably connected in the limiting groove (4531), and the two adjacent annular sleeves (51) are connected by a return spring (52). The left side of the outer wall of the annular sleeve (51) is connected with a push assembly (53), and the left end of the push assembly (53) is connected with a scraper group (54), and the scraper group (54) is composed of two scrapers that are symmetrical in front and back. The lower end surface of the lowest scraper group (54) is connected with a pressing assembly (55) at a right position.

7. The process for producing an alumina substrate based on slurry casting according to claim 6, characterized in that: The push assembly (53) comprises a push-pull rod (531), an annular paddle (532), a push seat (533), a hinge plate (534), an L-shaped connecting seat (535), a knife seat (536) and a supporting column (537). The right end of the push-pull rod (531) is fixedly connected to the annular sleeve (51). Two annular paddles (532) are fixedly sleeved on the left and right sides of the push-pull rod (531). The push-pull rod (531) is also slidably sleeved with a push seat (533). The push seat (533) is located between the two annular paddles (532). The front end of the push seat (533) is The rear two ends are rotatably connected to one end of the hinged plate (534), and the other end of the hinged plate (534) is rotatably connected to an L-shaped seat (535). The right end face of the longitudinal section of the L-shaped seat (535) is fixedly connected at the hinge with a limit plate (5351) for limiting the hinged plate (534) from rotating to the right. The left end of the L-shaped seat (535) is fixedly connected to a knife seat (536), and a scraper is fixedly connected inside the knife seat (536). The upper end face of the knife seat (536) is fixedly connected to a support column (537) for maintaining a certain distance between the knife seat (536) in a natural state.

8. The process for producing an alumina substrate based on slurry casting according to claim 7, characterized in that: The sticking assembly (55) comprises a telescopic rod (551), a ball bearing (552), a bar magnet (553) and an L-shaped magnet (554); the telescopic rod (551) is telescopic in the up-down direction and two telescopic rods (551) are symmetrically fixedly connected to the lower end face of the lowest knife seat (536) in the front and rear directions; the ball bearing (552) is rotatably embedded in the lower end of the telescopic rod (551); the left end faces of the movable sections of the two telescopic rods (551) are fixedly connected to the bar magnets (553); the left sides of the two bar magnets (553) are jointly provided with an L-shaped magnet (554) matched with the two bar magnets; the L-shaped magnet (554) is fixedly connected to the operating table (1).

Images