Compression molding equipment and compression molding method for crucible production

Abstract

The invention belongs to the technical field of crucible forming, and particularly relates to compression forming equipment for crucible production and a compression forming method.The compression forming equipment comprises a workbench, a first support is installed above the workbench, an upper die pressing device is installed below the first support, a lower die fixing device is arranged above the workbench, and a lifting device is installed below the workbench; compared with the prior art, the two-way opposite pressing of the powder in the inner cavity of the lower die is achieved, the stress of the powder at the upper end and the stress of the powder at the lower end are consistent through the forming mode, and therefore the powder forming efficiency is improved. The extremely high frictional resistance of the alumina powder is effectively overcome, the risks of biscuit microcracks and edge chipping can be greatly eliminated, and the finished product yield of the ceramic crucible is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of crucible forming technology, specifically relating to a pressing and forming equipment and method for crucible production. Background Technology

[0002] Currently, crucibles are the core basic containers for smelting, calcining and crystal growth in industries such as metallurgy, chemical industry, photovoltaic and semiconductor. In recent years, with the rapid development of the new materials industry, high-performance ceramic crucibles, represented by alumina, have seen a growing market demand due to their excellent high temperature resistance, corrosion resistance and high strength.

[0003] In the industrial production of alumina crucibles, dry powder pressing molding has become the most mainstream process due to its short production cycle and ease of mass production. However, alumina powder itself has physical properties such as high hardness, high coefficient of friction, and poor plasticity.

[0004] Most existing pressing equipment uses unidirectional pressing, such as applying pressure only from the upper mold downwards. However, during the pressing of alumina powder, due to the huge frictional resistance between powder particles and between the powder and the mold sidewall, the pressure decreases exponentially during transmission. This results in a severe density gradient inside the formed alumina blank, that is, it is dense near the pressure end and loose away from the pressure end. This uneven density will cause inconsistent crucible shrinkage in the subsequent high-temperature sintering process, which will lead to crucible deformation and cracking, seriously affecting the mechanical properties and service life of the finished product.

[0005] Furthermore, the structure of the alumina blank after dry pressing is extremely fragile. Due to the high hardness of alumina powder, it adheres very tightly to the inner wall of the mold after compaction, resulting in huge demolding resistance. Traditional equipment usually adopts the demolding method of forced ejection by bottom ejector rods or direct clamping and pulling by robotic arms. This rigid and localized stress can easily cause severe stress concentration in the fragile blank, leading to micro-cracks that are difficult to detect with the naked eye, or friction and chipping at the edge of the mold or even direct breakage, resulting in a high scrap rate in the demolding process. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a pressing and molding equipment and method for crucible production.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a pressing and forming equipment for crucible production, comprising a worktable, a support frame installed above the worktable, an upper mold pressing device installed below the support frame, a lower mold fixing device installed above the worktable, a lifting device installed below the worktable, rotating devices installed on both sides of the lifting device, a feeding device installed on the side of the worktable, and a feeding plate fitted above the worktable.

[0008] Preferably, the upper mold pressing device includes multiple cylinders 1 and multiple cylinders 2, all of which are installed below the support 1. The piston rod ends of the multiple cylinders 1 are detachably connected to the upper mold, and the piston rod ends of the multiple cylinders 2 are all equipped with suction components 1. Multiple grooves 1 are provided below the worktable, and the suction components 1 cooperate with the grooves 1. The upper mold and the lower mold fixing device cooperate with each other.

[0009] Preferably, the lower mold fixing device includes multiple fixing drive mechanisms. Multiple grooves are provided above the worktable, and through holes are provided on both sides of each groove. A movable shaft is slidably connected in each through hole. A cavity is provided at the position of the worktable corresponding to the through hole. The fixing drive mechanism is installed in the cavity and is fixedly connected to the movable shaft. A clamping member is installed at the end of the movable shaft away from the cavity. The clamping members in the multiple grooves hold the lower mold, and the upper mold and the lower mold cooperate.

[0010] Preferably, the lifting device includes a base that is detachably connected to the ground. Multiple lifting cylinders are installed inside the base, and each piston rod end of the multiple lifting cylinders is equipped with an adsorption element three, which cooperates with a groove one.

[0011] Preferably, the rotating mechanism includes a cylinder three and a rotating drive component. The cylinder three is mounted on the side of the base. A bracket two is mounted on the end of the piston rod of the cylinder three. A drive motor one is mounted above the bracket two. The rotating drive component is fixedly connected to the output end of the drive motor one. A connecting shaft is mounted on the side of the rotating drive component near the worktable. An adsorption component two is mounted on the side of the connecting shaft. A groove three is opened on the side of the worktable corresponding to the cylinder three. The groove three cooperates with the adsorption component two.

[0012] Preferably, the rotary drive component includes a rotary shaft and a disk. The rotary shaft is mounted on the output end of a drive motor. The disk is mounted on the side of a connecting shaft. Two connectors are mounted on the outer periphery of the rotary shaft. A groove is formed on the side of the disk near the rotary shaft. Connectors are mounted between the two connectors and the bottom of the groove. An annular groove is formed on the side of the disk. A ring fits in the annular groove. Connectors are mounted on the side of the ring. A fixing member is mounted on the side of the connecting member through a connecting cylinder. The fixing member is mounted on the outer periphery of the rotary shaft.

[0013] Preferably, the workbench has a rectangular groove, in which multiple adsorption components are installed. A feeding plate is placed on top of the workbench, and feeding clips are installed at both ends of the lower part of the feeding plate. A feeding clip is installed below the feeding clip. The feeding clip cooperates with the multiple adsorption components. The feeding plate cooperates with the lifting device.

[0014] Preferably, the fixed drive mechanism includes two connecting plates, both of which are installed in a cavity. A rotating shaft passes through the two connecting plates, and a movable block is installed on the outer periphery of the rotating shaft. The connecting plates are installed in the cavity. A sliding groove is provided above the connecting plates, and the movable block is slidably connected to the sliding groove. A cylinder is installed below the connecting plates, and the piston rod end of the cylinder is hinged to the movable block. A fixed support is installed above the connecting plates, and the movable shaft passes through the fixed support and is hinged to the top of the movable block.

[0015] Preferably, cylinders six are installed on both sides of the drive motor one, and two connecting parts two are installed on the outer periphery of the rotating shaft one. The two connecting parts two have fixed through holes on their sides, and the piston rod of the cylinder six cooperates with the fixed through holes.

[0016] A method for pressing and molding crucibles, comprising pressing and molding using the aforementioned crucible production pressing and molding equipment, including the following steps: Step 1: Place the lower mold coated with release agent into groove 2, and use the fixed drive mechanism to push the clamping parts to fix the lower mold. The feeding device will inject a certain amount of powder into the lower mold. Step 2: Cylinder 1 pushes the upper mold downwards, and the lifting device pushes the worktable and lower mold upwards, so that the upper and lower molds press and fit together to obtain the crucible blank; Step 3: The upper mold separates from the lower mold, the material plate is placed and fitted above the lower mold, the rotating device is fixed in place with the worktable, and the lifting device is separated from the worktable. Step 4: The rotating device drives the worktable and the unloading plate to rotate 180°. Cylinder 2 pushes the adsorption component 1 to adsorb and fix it to the worktable. The rotating device separates from the worktable. The lifting device cooperates with the unloading plate, and the unloading plate separates from the worktable. Cylinder 2 drives the worktable and the lower mold to move upward. The formed crucible blank is obtained on the unloading plate.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: (1) Most existing pressing equipment adopts unidirectional pressing, with only the upper mold applying pressure downwards. However, this application has a lifting device installed below the worktable and an upper mold pressing device installed above the worktable. By lifting the worktable up and lowering the upper mold pressing device, bidirectional pressing of the powder in the internal cavity of the lower mold is achieved. This forming method makes the powder at both ends of the upper and lower ends bear the same force, effectively overcomes the extremely high frictional resistance of alumina powder, eliminates the density gradient defect of the deep cavity preform, ensures the high density and uniformity of the formed preform, and provides a structural basis for subsequent sintering. (2) Existing equipment uses bottom ejector rods or robotic arms to demold, while this application uses the combination of a blanking plate and a rotating device to rotate the worktable 180°, and uses the weight of the crucible blank itself to make it fall off naturally and smoothly and stick to the blanking plate. This completely eliminates the local stress caused by the forced ejection or pulling of traditional mechanical ejector rods, thereby greatly eliminating the risk of micro-cracks and edge chipping of the blank, and significantly improving the yield of ceramic crucible products. (3) By setting a fixed drive mechanism, a moving shaft and a clamping component on both sides of the groove, the clamping and loosening of the lower mold can be completed quickly, completely replacing the cumbersome manual fastening method of traditional molds relying on bolts, which greatly shortens the downtime for mold changing when producing crucibles of different sizes or specifications. (4) The workbench is provided with a cavity corresponding to the through hole, and the fixed drive mechanism is hidden in the cavity. The moving shaft only slides out in the through hole. In the pressing and molding environment of high hardness powder such as alumina, a natural physical protective barrier is formed, which effectively prevents the powder from entering the core drive component, ensures the long-term operation of the clamping parts, and significantly reduces the failure rate and maintenance cost of the equipment. (5) By using the bottom hinge of cylinder seven and moving block, the linear thrust of cylinder seven is converted into a horizontal lateral thrust on the upper moving shaft. Combined with the double guide limit of slide groove one and fixed support, the transmission process is guaranteed to be smooth and provides a strong and uniform lateral clamping force for the lower mold. (6) By setting a connector three on the outer periphery of the rotating shaft one and connecting the connector five to the bottom of the groove four of the disc, a multi-point distributed torque transmission structure is formed. When the drive motor one drives the lower mold, worktable and crucible blank to rotate 180°, the structure can effectively disperse the huge impact torque generated at the moment of motor start and stop. This avoids the single-point stress concentration and fatigue fracture that are easy to occur in traditional single key or single shaft connection, and greatly improves the reliability of power transmission and the service life of the equipment. (7) The side of the disc is provided with an annular groove, and is connected to the rotating shaft by a matching ring, connector four and fixing parts, forming a radial guide and auxiliary support mechanism. Since the worktable is in a cantilevered state when it is flipped, the annular nested structure can provide the disc with all-round radial support force, effectively resisting the radial shear force and overturning moment caused by the center of gravity shift during the flipping process, ensuring the ultimate stability of the equipment when flipping and docking at fixed points. (8) The workbench and the mold containing powder have a large overall mass. When it is rotated 180° to the position, there is a great rotational inertia. The mechanical anti-deviation is achieved by inserting the piston rod of the cylinder into the fixed through hole of the connector, which realizes the physical rigid locking of the end point of the rotation. This completely eliminates the wandering and shaking caused by the transmission gap. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below: Figure 1 A front view of the pressing and molding equipment for crucible production provided in Example 1; Figure 2 Schematic diagram of a pressing and molding equipment for crucible production; Figure 3 Structural diagram of a pressing and molding equipment for crucible production; Figure 4 Front view of the rotary drive component in the pressing and molding equipment for crucible production; Figure 5 Schematic diagram of the rotary drive component in a pressing and molding equipment for crucible production; Figure 6 Schematic diagram of the fixed drive mechanism in the pressing and molding equipment for crucible production; Figure 7 A schematic diagram of the feeding plate in the pressing and molding equipment for crucible production.

[0019] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Base; 3. Support 1; 4. Cylinder 1; 5. Upper mold; 6. Cylinder 2; 7. Adsorption component 1; 8. Cylinder 3; 9. Support 2; 10. Drive motor 1; 11. Adsorption component 2; 12. Connecting shaft; 13. Disc; 14. Support plate 1; 15. Cylinder 4; 16. Cylinder 5; 17. Connecting component 1; 18. Material box; 19. Pump; 20. Spray pipe; 21. Cylinder 6; 22. Adsorption component 3; 23. Lower mold; 24. 25. Connector II; 26. Ring; 27. Connecting cylinder; 28. Rotating shaft I; 29. ​​Fixing component; 30. Connector III; 31. Connector V; 32. Connector IV; 33. Clamping component; 34. Connecting plate I; 35. Rotating shaft II; 36. Cylinder VII; 37. Connecting plate II; 38. Moving block; 39. Moving shaft; 40. Fixed support; 41. Fixed plate; 42. Arc-shaped component; 43. Material feeding plate; 44. Material feeding clamp I; 45. Material feeding clamp II. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1 The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 To further describe the present invention, a pressing and forming apparatus for crucible production, such as... Figure 1-3 As shown, the device includes a workbench 1, a support 3 mounted on top of the workbench 1, an upper mold pressing device mounted below the support 3, a lower mold fixing device mounted on top of the workbench 1, a lifting device mounted below the workbench 1, rotating devices mounted on both sides of the lifting device, a feeding device mounted on the side of the workbench 1, and a feeding plate 42 mounted on top of the workbench 1.

[0023] like Figure 1-3 As shown, the upper mold pressing device includes multiple cylinders 4 and multiple cylinders 6. The multiple cylinders 4 and multiple cylinders 6 are all installed below the bracket 3. The piston rod ends of the multiple cylinders 4 can be detachably connected to the upper mold 5. The piston rod ends of the multiple cylinders 6 are all equipped with suction components 7. Multiple grooves 1 are opened below the worktable 1. The suction components 7 and the grooves 1 cooperate with each other. The upper mold 5 cooperates with the lower mold fixing device.

[0024] like Figure 1-3As shown, the lower mold fixing device includes multiple fixing drive mechanisms. Multiple grooves are provided above the worktable 1. Through holes are provided on both sides of the multiple grooves. A movable shaft 38 is slidably connected in the through holes. A cavity is provided at the position of the worktable 1 corresponding to the through holes. The fixing drive mechanism is installed in the cavity and is fixedly connected to the movable shaft 38. A clamping member 32 is installed at the end of the movable shaft 38 away from the cavity. The clamping members 32 in the multiple grooves clamp the lower mold 23. The upper mold 5 and the lower mold 23 cooperate.

[0025] like Figure 1-3 As shown, the lifting device includes a base 2, which is detachably connected to the ground. Multiple lifting cylinders are installed inside the base 2, and each piston rod end of the multiple lifting cylinders is equipped with an adsorption component 22, which cooperates with the groove 1.

[0026] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the rotating mechanism includes a cylinder 3 8 and a rotating drive component. The cylinder 3 8 is mounted on the side of the base 2. A bracket 2 9 is mounted on the end of the piston rod of the cylinder 3 8. A drive motor 10 is mounted above the bracket 2 9. The rotating drive component is fixedly connected to the output end of the drive motor 10. A connecting shaft 12 is mounted on the side of the rotating drive component near the worktable 1. An adsorption component 2 11 is mounted on the side of the connecting shaft 12. A groove 3 is opened on the side of the worktable 1 corresponding to the cylinder 3 8. The groove 3 cooperates with the adsorption component 2 11.

[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the rotary drive includes a rotary shaft 27 and a disk 13. The rotary shaft 27 is installed at the output end of the drive motor 10. The disk 13 is installed on the side of the connecting shaft 12. Two connectors 29 are installed on the outer periphery of the rotary shaft 27. A groove 4 is provided on the side of the disk 13 near the rotary shaft 27. Connectors 30 are installed between the side of the two connectors 29 near the disk 13 and the bottom of the groove 4. An annular groove is provided on the side of the disk 13. A ring 25 fits in the annular groove. Connectors 31 are installed on the side of the ring 25. A fixing member 28 is installed on the side of the connecting member 31 through the connecting cylinder 26. The fixing member 28 is installed on the outer periphery of the rotary shaft 27.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, the workbench 1 has a rectangular groove, and multiple adsorption components are installed in the rectangular groove. A feeding plate 42 is placed on top of the workbench 1. Feeding clamps 43 are installed at both ends of the lower part of the feeding plate 42. Feeding clamps 44 are installed below the feeding clamps 43. Feeding clamps 44 cooperate with the multiple adsorption components. The feeding plate 42 cooperates with the lifting device.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the fixed drive mechanism includes two connecting plates 33, both of which are installed in a cavity. A rotating shaft 34 passes through the two connecting plates 33. A movable block 37 is installed on the outer periphery of the rotating shaft 34. A connecting plate 36 is installed in the cavity. A sliding groove is provided above the connecting plate 36. The movable block 37 is slidably connected to the sliding groove. A cylinder 35 is installed below the connecting plate 36. The piston rod end of the cylinder 35 is hinged to the movable block 37. A fixed support 39 is installed above the connecting plate 36. A movable shaft 38 passes through the fixed support 39 and is hinged to the top of the movable block 37.

[0030] like Figure 4 and Figure 5 As shown, cylinders 21 are installed on both sides of the drive motor 10. Two connecting parts 24 are installed on the outer periphery of the rotating shaft 27. The sides of the two connecting parts 24 are provided with fixing through holes. The piston rod of cylinder 21 is engaged with the fixing through holes.

[0031] In this invention, such as Figures 1-3 As shown, the feeding device includes multiple material boxes 18 and a support plate 14. The multiple material boxes 18 are all placed on the ground. The interior of each material box 18 is detachably connected to a spray pipe 20. A pump 19 is installed on the spray pipe 20. A nozzle is installed and connected to the end of the spray pipe 20. A connector 17 is installed on the outer periphery of the spray pipe 20. The support plate 14 is installed on the side of the drive motor 10 on one side of the workbench 1. A cylinder 15 is installed above the support plate 14. A cylinder 16 is installed at the end of the piston rod of the cylinder 15. The end of the piston rod of the cylinder 16 is detachably connected to the side of the connector 17. A flow meter is installed on the spray pipe 20. The flow meter is located between the nozzle and the connector 17.

[0032] In this invention, the powder in the material box 18 is the stirred powder used for crucible molding.

[0033] In this invention, cylinder four 15 is vertically arranged, cylinder five 16 is horizontally arranged, and the spray pipe 20 includes steel pipe one, corrugated pipe one, steel pipe two, corrugated pipe two and steel pipe three. Steel pipe one is detachably connected and communicates with the inside of the material box 18. Corrugated pipe one is installed at the end of steel pipe one. Steel pipe two is installed between corrugated pipe two and corrugated pipe one. Steel pipe three is installed between the nozzle and corrugated pipe two. Connector one 17 is installed on the outer periphery of steel pipe three. Flow meter is installed on steel pipe three. Pump 19 is installed on steel pipe one.

[0034] In this invention, the function of the second bellows is to enable the nozzle to move to a certain distance from the side of the worktable 1 under the drive of the fifth cylinder 16, and the function of the first bellows is to enable the nozzle to move into the lower mold 23 under the drive of the fourth cylinder 15.

[0035] In this invention, the upper surface of the lower mold 23 is at a height higher than the upper surface of the worktable 1.

[0036] In this invention, arc-shaped parts 41 are installed around the lower mold 23. The outer surface of the lower mold 23 is rectangular, and the internal cavity is shaped like a crucible.

[0037] In this invention, the side of the second groove and the rectangular groove are separated by a certain distance, that is, the second material unloading clamp 44 is located in the rectangular groove, the first material unloading clamp 43 is located between the rectangular groove and the second groove above the worktable 1, and the unloading plate 42 is in contact with the upper surface of the lower mold 23.

[0038] In this invention, the first adsorption element 7, the second adsorption element 11, the third adsorption element 22, and the fourth adsorption element are all existing industrial electromagnetic adsorption mechanisms.

[0039] In this invention, the bottom of the first groove under the workbench 1, the bottom of the third groove on the side of the workbench 1, the lower surface of the second unloading clamp 44, and the lower surface of the unloading plate 42 are all made of iron.

[0040] In this invention, a fixed plate 40 is installed at the end of the fixed support 39 near the movable block 37. The diameter of the through hole in the fixed support 39 is larger than the diameter of the movable shaft 38. A limiting plate is installed on the outer periphery of the movable shaft 38, and the limiting plate is located inside the fixed support 39.

[0041] In this invention, the hinge point between cylinder 35 and moving block 37 is located between the bottom of connecting plate 36 and the bottom of cavity 1.

[0042] In this invention, the outer periphery of the rotating shaft 27 is provided with multiple annular grooves, the fixing member 28 is cylindrical, and multiple annular protrusions are installed on the inner side of the fixing member 28. The annular protrusions are located in the annular grooves, and the annular protrusions and the annular grooves are fixedly connected.

[0043] In this invention, the number of cylinder 4, groove 2 and material box 18 are the same, the number of cylinder 6 and groove 1 is the same, and the number of lifting cylinders is equal to the number of groove 2 plus the number of cylinder 6.

[0044] In this invention, the lower surface of the lower mold 23 contacts the lower surface of the groove 2, but the side surface of the lower mold 23 does not contact the side surface of the groove 2.

[0045] In this invention, the distance between the two feeding clips 43 near the side of the groove is greater than the length of the groove along the line connecting the two feeding clips 43.

[0046] In this invention, a controller is also included, and cylinder 4, cylinder 6, adsorption element 7, lifting cylinder, adsorption element 22, cylinder 8, drive motor 10, adsorption element 21, adsorption element 4, cylinder 7 35, cylinder 6 21, cylinder 4 15, cylinder 5 16, drive motor 10, pump 19 and flow meter are all communicatively connected to the controller.

[0047] In this invention, multiple cylinders 4 are synchronously controlled by a controller, multiple cylinders 6 are synchronously controlled by a controller, the adsorption component 7 below the multiple cylinders 6 is synchronously controlled by a controller, multiple lifting cylinders are synchronously controlled by a controller, the adsorption component 22 above the multiple lifting cylinders is synchronously controlled by a controller, the cylinders 8 on both sides of the worktable 1 are synchronously controlled by a controller, the drive motors 10 on both sides of the worktable 1 are synchronously controlled by a controller, the adsorption components 11 on both sides of the worktable 1 are synchronously controlled by a controller, multiple adsorption components 4 are synchronously controlled by a controller, the cylinders 35 on both sides of the lower mold 23 are synchronously controlled by a controller, the cylinders 15 on the side of the worktable 1 are synchronously controlled by a controller, the cylinders 16 on the side of the worktable 1 are synchronously controlled by a controller, the pump 19 on the side of the worktable 1 is synchronously controlled by a controller, and the flow meter on the side of the worktable 1 is synchronously controlled by a controller.

[0048] In this invention, the cylinders 35 on both sides of the different grooves are controlled separately by a controller.

[0049] A method for pressing and molding crucibles includes the following steps: Step 1: Place the lower mold 23 coated with release agent into the groove 2, and use the fixed drive mechanism to push the clamping part 32 to fix the lower mold 23. The feeding device injects a certain amount of powder into the lower mold 23. Step 2: Cylinder 4 pushes the upper mold 5 downward, and the lifting device pushes the worktable 1 and the lower mold 23 upward, so that the upper mold 5 and the lower mold 23 press and fit together to obtain the crucible blank; Step 3: The upper mold 5 detaches from the lower mold 23, the material feeding plate 42 is placed and fitted above the lower mold 23, the rotating device is fixed in place with the worktable 1, and the lifting device is separated from the worktable 1. Step 4: The rotating device drives the worktable 1 and the unloading plate 42 to rotate 180°. The second cylinder 6 pushes the adsorption component 7 to adsorb and fix it to the worktable 1. The rotating device separates from the worktable 1. The lifting device cooperates with the unloading plate 42. The unloading plate 42 separates from the worktable 1. The second cylinder 6 drives the worktable 1 and the lower mold 23 to move upward. The formed crucible blank is obtained on the unloading plate 42.

[0050] In this invention, step one includes: the worker applies a release agent to the inner side of the lower mold 23, then places the lower mold 23 in one of the grooves 2, activates cylinder 7 35 on the side of the groove 2, cylinder 7 35 drives the moving block 37 to slide along the slide groove 1 of the connecting plate 2 36, the moving block 37 drives the moving shaft 38 to move horizontally along the fixed support 39, and finally pushes the clamping parts 32 on both sides of the groove 2 to clamp the lower mold 23, completing the positioning and fixing of the lower mold 23, closing cylinder 7 35, repeating the operation, placing multiple grooves 2 into the lower mold 23 coated with release agent, activating cylinder 5 16, cylinder 5 16 pushes... The nozzle of the moving spray pipe 20 moves to directly above the internal cavity of the lower mold 23. Cylinder 5 16 is closed, and cylinder 4 15 is opened. Cylinder 4 15 drives the nozzle to move down into the internal cavity of the lower mold 23. Cylinder 4 15 is closed, and pump 19 is opened. The powder in the material box 18 is transported to the nozzle through steel pipe 1, corrugated pipe 1, steel pipe 2, corrugated pipe 2, and steel pipe 3, and sprayed into the internal cavity of the lower mold 23. The flow meter monitors the spray volume in real time and feeds it back to the controller. When the preset quantitative value is reached, the controller closes pump 19 and stops spraying. Cylinder 5 16 and cylinder 4 15 retract in sequence, driving the nozzle to reset to the initial position.

[0051] In this invention, step two includes: opening the adsorption component 3 22, which engages with the groove 1 below the workbench 1 for adsorption and fixation; opening the cylinder 4, which pushes the upper mold 5 below to move vertically downward; opening the lifting cylinder, which moves the workbench 1 and the fixed lower mold 23 upward, so that the lower surface of the upper mold 5 engages with the internal cavity of the lower mold 23; and pressing the powder into a crucible blank through the combined action of the cylinder 4 and the lifting cylinder; and closing the cylinder 4 and the lifting cylinder.

[0052] In this invention, step three includes: after the upper mold 5 and the lower mold 23 have been engaged for a certain period of time, cylinder 4 is activated, which drives the upper mold 5 to move vertically upward, separating it from the crucible blank in the lower mold 23 and resetting it to its initial position; cylinder 4 is then deactivated, and the unloading plate 42 is manually placed above the lower mold 23, aligning the unloading clamp 44 below the unloading plate 42 with the suction member 4 in the rectangular groove of the workbench 1; the suction member 4 is activated to suction and fix the unloading clamp 44, ensuring that the unloading plate 42 and the lower mold 23 are aligned. When the upper surface of 3 is in close contact, the lifting cylinder is activated, and the worktable 1 returns to its initial position. The lifting cylinder is then closed, and cylinder 8 is activated. Cylinder 8 pushes support 9 towards the worktable 1 until the adsorption component 11 on support 9 is aligned with the groove 3 on the side of the worktable 1. Adsorption component 11 is then activated, allowing it to adhere and fix to the worktable 1. Adsorption component 22 is then closed, and the lifting cylinder is activated. The lifting cylinder moves adsorption component 22 downward, leaving space for the worktable 1 to rotate.

[0053] In this invention, the drive motor 10 is turned on, which drives the rotating shaft 27 to rotate. The rotating shaft 27 drives the disk 13 to rotate through the connector 29 and connector 30. The disk 13 drives the adsorption component 11 and the worktable 1 to rotate synchronously through the connecting shaft 12. The ring 25 cooperates with the annular protrusion of the fixing component 28 to ensure rotational stability. When the rotation angle reaches 180°, the drive motor 10 is turned off, and the cylinder 21 is started synchronously. The piston rod extends and inserts into the fixing through hole of the connector 24 to lock the rotating shaft 27 to prevent displacement after flipping. The cylinder 21 is then turned off. After flipping, the lower mold 23 is located below the worktable 1, and the crucible blank adheres to the lower surface of the upper feeding plate 42 due to gravity. At this time, the groove 1 of the worktable 1 is located above. The cylinder 6 is turned on, and the cylinder 6 drives the adsorption component 7 to rotate vertically. Move downwards, activate adsorption component 7, adsorbent component 7 is fixed to the groove 1 above the worktable 1, close cylinder 2 6, activate lifting cylinder, lifting cylinder pushes adsorbent component 3 22 upwards, activate adsorbent component 3 22, adsorbent component 3 22 is fixed to the lower surface of the feed plate 42, close adsorbent component 2 11, activate cylinder 3 8, cylinder 3 8 drives bracket 2 9 and rotary drive component away from the worktable 1, drive motor 1 10 resets, close cylinder 3 8, close adsorbent component 4, adsorbent component 4 fixes feed plate 2 44, activate cylinder 2 6, cylinder 2 6 drives the worktable 1 and lower mold 23 to move vertically upwards, the crucible blank remains above the feed plate 42, activate lifting cylinder, lifting cylinder pushes feed plate 42 upwards to the picking height, manually remove the formed crucible blank from feed plate 42, completing one forming cycle.

[0054] Step four also includes: after the molded crucible blank is manually removed, the adsorption component 22 is turned off, the adsorption component 22 is separated from the material feeding plate 42, the worker removes the material feeding plate 42, the cylinder 6 pushes the worktable 1 and the lower mold 23 to a suitable position, the cylinder 8 drives the drive motor 10 to move, so that the adsorption component 11 is adsorbed and fixed to the worktable 1, the adsorption component 7 is separated from the worktable 1, the drive motor 10 drives the worktable 1 to rotate until the lower mold 23 is above, the drive motor 10 is turned off, the adsorption component 11 is separated from the worktable 1, the lifting cylinder moves upward to support the worktable 1.

[0055] In this invention, after repeating steps one to four to produce crucible blanks of a batch size, if it is necessary to produce blanks of other sizes, the upper mold 5 and the lower mold 23 need to be changed between steps one.

[0056] In this invention, the above process can be automatically controlled by a controller.

[0057] In this invention, the above process can be adjusted according to the on-site conditions.

[0058] As a technical solution of this invention, the provided hardware configuration is merely for facilitating the implementation of specific braking control based on the hardware facilities. How to specifically implement braking control and the braking control method are not the technical problems to be solved or the objects of protection of this invention. Furthermore, the communication methods between the devices all employ existing communication methods and are not the inventive point of this invention.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A pressing and forming device for crucible production, comprising a workbench (1), characterized in that, A support bracket (3) is installed above the workbench (1), an upper mold pressing device is installed below the support bracket (3), a lower mold fixing device is installed above the workbench (1), a lifting device is installed below the workbench (1), a rotating device is installed on both sides of the lifting device, a feeding device is also provided on the side of the workbench (1), and a feeding plate (42) is fitted above the workbench (1).

2. The pressing and forming equipment for crucible production according to claim 1, characterized in that, The upper mold pressing device includes multiple cylinders one (4) and multiple cylinders two (6). The multiple cylinders one (4) and multiple cylinders two (6) are all installed below the bracket one (3). The piston rod ends of the multiple cylinders one (4) can be detachably connected to the upper mold (5). The piston rod ends of the multiple cylinders two (6) are all equipped with suction components one (7). The workbench (1) has multiple grooves below it. The adsorption component (7) is engaged with the grooves, and the upper mold (5) is engaged with the lower mold fixing device.

3. The pressing and forming equipment for crucible production according to claim 2, characterized in that, The lower mold fixing device includes multiple fixing drive mechanisms. Multiple grooves are provided above the worktable (1). Through holes are provided on both sides of the multiple grooves. A movable shaft (38) is slidably connected in the through holes. A cavity is provided at the position corresponding to the through holes on the worktable (1). The fixing drive mechanism is installed in the cavity. The fixing drive mechanism is fixedly connected to the movable shaft (38). A clamping member (32) is installed at the end of the movable shaft (38) away from the cavity. The clamping members (32) in the multiple grooves clamp the lower mold (23). The upper mold (5) and the lower mold (23) cooperate.

4. The pressing and forming equipment for crucible production according to claim 2 or 3, characterized in that, The lifting device includes a base (2), which is detachably connected to the ground. Multiple lifting cylinders are installed inside the base (2). Adsorption element three (22) is installed at the piston rod end of each of the multiple lifting cylinders. The adsorption element three (22) cooperates with the groove one.

5. The pressing and forming equipment for crucible production according to claim 4, characterized in that, The rotating mechanism includes a cylinder three (8) and a rotating drive component. The cylinder three (8) is mounted on the side of the base (2). A bracket two (9) is mounted on the piston rod end of the cylinder three (8). A drive motor one (10) is mounted above the bracket two (9). The rotating drive component is fixedly connected to the output end of the drive motor one (10). A connecting shaft (12) is mounted on the side of the rotating drive component near the worktable (1). An adsorption component two (11) is mounted on the side of the connecting shaft (12). A groove three is opened on the side of the worktable (1) corresponding to the cylinder three (8). The groove three cooperates with the adsorption component two (11).

6. The pressing and forming equipment for crucible production according to claim 5, characterized in that, The rotary drive includes a rotary shaft (27) and a disc (13). The rotary shaft (27) is installed at the output end of the drive motor (10). The disc (13) is installed on the side of the connecting shaft (12). Two connecting parts (29) are installed on the outer periphery of the rotary shaft (27). A groove (4) is provided on the side of the disc (13) near the rotary shaft (27). Connecting parts (5) (30) are installed between the side of the two connecting parts (29) near the disc (13) and the bottom of the groove (4). The disc (13) has an annular groove on its side, and a ring (25) fits in the annular groove. A connector (31) is installed on the side of the ring (25), and a fixing member (28) is installed on the side of the connector (31) through a connecting cylinder (26). The fixing member (28) is installed on the outer periphery of the rotating shaft (27).

7. The pressing and forming equipment for crucible production according to claim 1, characterized in that, The workbench (1) has a rectangular slot, and multiple adsorption components are installed in the rectangular slot. A feeding plate (42) is placed on top of the workbench (1). Feeding clips (43) are installed at both ends of the lower part of the feeding plate (42). Feeding clips (44) are installed below the feeding clips (43). Feeding clips (44) cooperate with the multiple adsorption components. The feeding plate (42) cooperates with the lifting device.

8. The pressing and forming equipment for crucible production according to claim 3, characterized in that, The fixed drive mechanism includes two connecting plates (33), both of which are installed in a cavity. A rotating shaft (34) passes through the two connecting plates (33). A moving block (37) is installed on the outer periphery of the rotating shaft (34). A connecting plate (36) is installed in the cavity. A sliding groove is provided above the connecting plate (36). The moving block (37) is slidably connected to the sliding groove. A cylinder (35) is installed below the connecting plate (36). The piston rod end of the cylinder (35) is hinged to the moving block (37). A fixed support (39) is installed above the connecting plate (36). The moving shaft (38) passes through the fixed support (39) and is hinged to the top of the moving block (37).

9. The pressing and forming equipment for crucible production according to claim 6, characterized in that, Both sides of the drive motor (10) are equipped with cylinders (21). Two connecting parts (24) are installed on the outer periphery of the rotating shaft (27). The two connecting parts (24) are provided with fixed through holes on their sides. The piston rod of the cylinder (21) is engaged with the fixed through holes.

10. A pressing and molding method for crucible production, characterized in that, Pressing and molding using the crucible production pressing and molding equipment as described in claim 3 includes the following steps: Step 1: Place the lower mold (23) coated with release agent into the groove 2, and use the fixed drive mechanism to push the clamping part (32) to fix the lower mold (23). The feeding device injects a certain amount of powder into the lower mold (23). Step 2: Cylinder 1 (4) pushes the upper mold (5) downward, and the lifting device pushes the worktable (1) and the lower mold (23) upward, so that the upper mold (5) and the lower mold (23) press and fit together to obtain the crucible blank; Step 3: The upper mold (5) is separated from the lower mold (23), the material plate (42) is placed and fitted above the lower mold (23), the rotating device is fixed in conjunction with the worktable (1), and the lifting device is separated from the worktable (1); Step 4: The rotating device drives the worktable (1) and the unloading plate (42) to rotate 180°. The second cylinder (6) pushes the first adsorption component (7) to adsorb and fix with the worktable (1). The rotating device separates from the worktable (1). The lifting device cooperates with the unloading plate (42). The unloading plate (42) separates from the worktable (1). The second cylinder (6) drives the worktable (1) and the lower mold (23) to move upward. The formed crucible blank is obtained on the unloading plate (42).

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