Ceramic powder quantitative dry pressing powder filling molding device and method

Abstract

The present invention discloses a device and method for quantitative dry pressing and powder filling molding of ceramic powder, which relates to the technical field of quantitative dry pressing of ceramic powder. The present invention drives the internal threaded rod of the limiting cylinder to rotate by a second motor, thereby realizing the up and down movement and rotation of the sliding sleeve and the cover plate, and cooperates with the upper rotating sleeve to drive the rotation of the telescopic cover at the bottom of the storage box, so that the upper mold at the bottom of the cover plate dry presses the ceramic powder while the telescopic cover can put the loaded quantitative ceramic powder into the mold shell. Compared with the operation of weighing first and then putting and finally dry pressing, the overall ceramic powder dry pressing efficiency is higher, the embryo preparation rate is faster, and at the same time, the ceramic powder is pressurized successively, the pressure transmission is more thorough, which is conducive to gas discharge and the action time is longer, so the density of the embryo is more uniform than that of unidirectional pressurization or bidirectional pressurization at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic powder quantitative dry pressing, and in particular to a ceramic powder quantitative dry pressing powder filling and molding device and method. Background Art

[0002] Conductive ceramics are widely used in electronic fields such as sensor high-temperature components, fixed resistors, solid oxide fuel cells, and ferrite materials due to their characteristics of anti-oxidation, corrosion resistance, radiation resistance, and high temperature resistance. Conductive ceramic materials are generally modified by doping to increase the concentration of electrons, holes, or oxygen ions in the material lattice to enhance the conductivity of the material, similar to the use of ceramic powder made by crushing a pre-sintered body containing Li, Al, and Si in all or part of the raw materials for introducing Li, Al, and Si to prepare the body;

[0003] Common molding methods for such ceramic components include dry pressing, casting, and injection molding, among which dry pressing is the most widely used molding process. Dry pressing, also known as compression molding, is one of the most commonly used molding methods. Dry pressing involves loading granulated powder with good fluidity and appropriate particle size distribution into a metal mold cavity. Pressure is applied by a pressing head, which moves within the mold cavity, transmitting pressure, causing the powder particles in the mold cavity to rearrange and deform, thereby compacting the powder and forming a ceramic green body with a certain strength and shape. For green body molding control, it is necessary to quantitatively add ceramic powder and control the dry pressing process of the entire green body, thereby ensuring green body production efficiency while improving the overall green body quality.

[0004] To this end, we propose a ceramic powder quantitative dry pressing powder filling molding device and method. Summary of the Invention

[0005] The purpose of the present invention is to provide a ceramic powder quantitative dry pressing powder filling molding device and method to solve the problem of the above-mentioned background technology that the process of ceramic powder quantitative dry pressing to produce embryos is complicated and causes reduced overall efficiency;

[0006] To achieve the above object, the present invention provides the following technical solution: a ceramic powder quantitative dry pressing powder filling molding device, comprising a box cover, a material storage box is installed on the top of the box cover, a mold shell is fixed in the box cover by bolts, and a vibrator is installed on one side of the mold shell;

[0007] The top of the mold shell is slidably connected to a cover plate, and a fixing cylinder is fixed to the bottom of the cover plate by bolts, and limiting grooves are symmetrically provided on the outer walls of both sides of the fixing cylinder. An upper mold is clamped and installed on the bottom of the fixing cylinder, and a hydraulic cylinder is symmetrically fixed to the bottom inner wall of the box cover by bolts. A lower mold is slidably connected to the bottom of the upper mold in the mold shell, and the bottom of the lower mold is fixed to one end of the hydraulic cylinder by bolts. A box door is installed on one side of the box cover, and a control panel is installed on one side of the box cover;

[0008] An electric push rod is symmetrically fixed to the top of the box cover by bolts, and one end of the electric push rod is fixed to the bottom of the material storage box. A discharge port is provided at the bottom of the material storage box, and a feed port is provided at the top of the box cover. A telescopic cover is slidably connected to the bottom of the material storage box, and an arc-shaped baffle is fixed to one side of the telescopic cover by spot welding.

[0009] A transmission box is installed on the inner wall of the bottom of the box cover, and a second motor is fixed to the inner wall of the transmission box by bolts, and a gear is fixed to the output end of the second motor by bolts;

[0010] The top of the cover plate is connected to the fixed arm by a bolt.

[0011] Furthermore, the first motor is symmetrically fixed to both sides of the top of the cover plate by bolts, and a protrusion is sleeved and fixed on the output end of the first motor.

[0012] Furthermore, a top block is symmetrically and slidingly connected to the top of the inner wall of the mold shell, and a return spring is installed on the outer wall of the top block. A resist column is symmetrically and slidingly connected to the mold shell and the top of the top block, and one end of the resist column is in contact with the inclined surface of one side of the top block.

[0013] A method for quantitative dry pressing and powder filling molding of ceramic powder, specifically comprising the following steps:

[0014] Step 1: quantitative feeding, start the electric push rod on the top of the box cover through the control panel, the electric push rod pushes the storage box to a corresponding height, so that the quantitative ceramic powder enters the telescopic cover from the discharge port, at the same time, the second motor rotates to drive the threaded rod to rotate, the rotating threaded rod drives the threaded sleeve and the sliding sleeve to move upward on the outer wall of the limiting cylinder, when the threaded sleeve contacts the top notch of the L-shaped groove, the rotating threaded rod drives the threaded sleeve and the sliding sleeve to rotate on the outer wall of the limiting cylinder;

[0015] As the sliding sleeve rotates, it drives the fixed arm and the rotating sleeve on the fixed arm to rotate. The rotating sleeve is located at the top of the box cover and is connected to the telescopic cover. At the same time, it drives the telescopic sleeve to rotate at the bottom of the storage box until the bottom of the telescopic sleeve coincides with the feed port at the top of the box cover. At the same time, the rotation of the fixed arm drives the cover plate to rotate to one side, and the guide cylindrical membrane without the cover plate abutting begins to coincide with the top of the mold shell. The quantitative ceramic powder in the telescopic cover enters the lower mold surface at the bottom of the mold shell along the feed port and the guide cylindrical membrane;

[0016] Step 2: Double-sided pressing. After the ceramic powder enters the mold shell, the threaded rod rotates in the opposite direction, so that the upper cover plate of the fixed arm overlaps with the top of the mold shell. Then the sliding sleeve brings the fixed arm down, so that the upper mold at the bottom of the cover plate begins to descend in the mold shell and contacts the ceramic powder on the surface of the lower mold. The upper mold continues to squeeze, while the lower mold does not move. At the same time, the first motor on the top of the cover plate rotates to drive the protrusion to contact the anti-pillar. The anti-pillar squeezes the top block in the mold shell so that the top block contacts the limit groove on one side of the fixed cylinder, completing the fixation of the upper mold.

[0017] At this time, the hydraulic cylinder in the box cover works to push the lower die upward, so that the lower die abuts against the bottom of the pressed ceramic powder, completing the operation of pressing the ceramic powder down first and then up.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the second motor drives the internal threaded rod of the limiting cylinder to rotate, thereby realizing the up and down movement and rotation of the sliding sleeve and the cover plate, and the upper rotating sleeve drives the rotation of the telescopic cover at the bottom of the storage box, so that the upper mold at the bottom of the cover plate can dry-press the ceramic powder while the telescopic cover can put the loaded quantitative ceramic powder into the mold shell. Compared with the operation of weighing first and then putting and finally dry-pressing, the overall ceramic powder dry-pressing efficiency is higher, the embryo preparation rate is faster, and the ceramic powder is pressurized separately in turn, the pressure transmission is more thorough, which is conducive to gas discharge and the action time is longer. Therefore, the density of the embryo is more uniform than that of unidirectional pressurization or bidirectional pressurization at the same time.

[0020] 2. In the present invention, the electric push rod is used to drive the entire storage box to rise, thereby adjusting the height of the entire telescopic cover. The entire fixed arm is used to rotate to drive the telescopic cover to rotate at the bottom of the storage box, so as to receive the ceramic powder flowing out of the discharge port at the bottom of the storage box. At the same time, the quantitative discharge of ceramic powder is completed when the telescopic cover moves. The path loss is small and the overall quantitative delivery accuracy of ceramic powder is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the ceramic powder quantitative dry pressing powder filling molding device of the present invention;

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of the ceramic powder quantitative dry pressing powder filling molding device of the present invention;

[0023] Figure 3 Schematic diagram of the cross-sectional structure of the transmission box and the mold shell of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at A;

[0025] Figure 5 It is a bottom view structural schematic diagram of the material storage box of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure between the telescopic cover and the arc-shaped baffle of the present invention.

[0027] In the figure: 1. box cover; 2. electric push rod; 3. material storage box; 4. material discharge port; 5. telescopic cover; 6. arc baffle; 7. material feed port; 8. material guide cylindrical membrane; 9. mold shell; 10. top block; 11. return spring; 12. support column; 13. vibrator; 14. hydraulic cylinder; 15. lower mold; 16. transmission box; 17. transmission mechanism; 171. limiting cylinder; 172. L-shaped groove; 173. threaded rod; 174. sliding sleeve; 175. fixed arm; 176. rotating sleeve; 177. threaded sleeve; 18. cover plate; 19. fixed cylinder; 20. limiting groove; 21. upper mold; 22. first motor; 23. bump; 24. second motor; 25. gear; 26. box door; 27. control panel. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-6 , the present invention provides a technical solution:

[0030] Example 1:

[0031] The essence of dry pressing of ceramic powder is that under the action of external force, the particles are close to each other in the mold, and the internal friction force firmly connects the particles to maintain a certain shape. This internal friction force acts on the thin layer of binder around the particles that are close to each other. As the pressure increases, the blank will change its shape, slide against each other, the gap is reduced, and the contact is gradually increased, and it is close to each other. As the particles get closer, the force between the colloidal molecules and the particles is strengthened, so the blank has a certain mechanical strength.

[0032] like Figure 1-2As shown, the entire ceramic powder quantitative dry pressing powder filling molding device adopts two-way sequential pressurization. Double-sided sequential pressurization means that the pressure on both sides is applied successively. Since the pressure is applied successively, the pressure transmission is more thorough, which is conducive to gas discharge and the action time is longer. Therefore, the density of the green body is more uniform than that of unidirectional pressurization or bidirectional simultaneous pressurization. At the same time, the whole equipment is also equipped with an automatic feeding mechanism, which can realize rapid filling of ceramic powder after dry pressing, thereby improving the efficiency of the entire ceramic powder dry pressing.

[0033] During the specific operation, a sufficient amount of ceramic powder is first added to the storage box 3. A discharge port 4 is provided at the bottom of the storage box 3. At the same time, a telescopic baffle 5 is slidably connected to one side of the discharge port 4. In addition to the telescopic cover 5 being able to telescope and change its volume, an arc baffle 6 is fixed to the top of one side of the telescopic cover 5 by spot welding. In the initial state, the entire arc baffle 6 is located at the discharge port 4 at the bottom of the storage box 3, which is used to intercept and abut the ceramic powder falling from the discharge port 4. When the entire telescopic cover 5 rotates at the bottom of the storage box 3, the top of the telescopic cover 5 begins to contact the discharge port 4 until the top of the telescopic cover 5 is completely The entire telescopic cover 5 coincides with the discharge port 4. During the whole process, ceramic powder continuously flows into the telescopic cover 5 from the discharge port 4 until the entire telescopic cover 5 is filled with ceramic powder. The volume of the entire telescopic cover 5 is adjustable. The top of the entire box cover 1 is symmetrically installed with an electric push rod 2. One end of the electric push rod 2 is connected to the storage box 3. The entire storage box 3 is lifted to a corresponding height by the electric push rod 2. Accordingly, the entire telescopic cover 5 will also rise to a corresponding height. The height change of the telescopic cover 5 will affect the volume of the entire telescopic cover 5, which is convenient for feeding a certain amount of ceramic powder into the mold shell 9 in the later stage.

[0034] A feed port 7 is provided at the top of the box cover 1. When the telescopic cover 5 is filled with ceramic powder and rotates, the ceramic powder in the telescopic cover 5 will be discharged into the guide cylindrical membrane 8 connected to the bottom of the feed port 7 after passing through the feed port 7. In the process of overlapping the telescopic cover 5 and the feed port 7, the discharge port 4 at the bottom of the storage box 3 is prevented from continuously discharging the material, and the entire arc-shaped baffle 6 will block the discharge port 4.

[0035] When the ceramic powder discharged from the guide cylinder 8 enters the mold shell 9, the sliding sleeve 174 on the transmission mechanism 17 starts to rotate counterclockwise. Figure 3 As shown, a limiting groove 20 is provided on the outer wall of the limiting cylinder 171, and a sliding sleeve 174 is slidably connected to the outer wall of the limiting cylinder 171. A threaded rod 173 is movably connected inside the limiting cylinder 171, and a threaded sleeve 177 is movably sleeved on the outer wall of the threaded rod 173. One side of the threaded sleeve 177 passes through the limiting groove 20 and is connected to one side of the sliding sleeve 174. One end of the threaded rod 173 passes through the transmission box 16 and is connected to a gear 25. The output end of the second motor 24 located in the transmission box 16 is also equipped with a gear 25. The two gears 25 are meshed and connected, so that the entire threaded rod 173 is driven to rotate under the operation of the second motor 24.

[0036] In the initial state, the threaded rod 173 rotates clockwise to drive the threaded sleeve 177 and the sliding sleeve 174 to move upward. When the threaded sleeve 177 moves to the top of the L-shaped groove 172, the L-shaped groove 172 no longer limits the threaded sleeve 177. As a result, the rotation of the threaded rod 173 at this time drives the threaded sleeve 177 and the sliding sleeve 174 to rotate clockwise.

[0037] The cam 175 is fixed to the upper mold 21 of the cover plate 18 by a screw, and the upper mold 21 is installed at the bottom of the cover plate 18 for dry pressing.

[0038] When the material guide cylinder is docked with the mold shell 9, that is, when the top telescopic cover 5 coincides with the feed port 7, the ceramic powder can enter the mold shell 9 along the material guide cylinder membrane 8. When the ceramic powder in the mold shell 9 is completely filled, the second motor 24 drives the threaded rod 173 to rotate in the opposite direction, so that the threaded sleeve 177 and the sliding sleeve 174 on the threaded rod 173 rotate counterclockwise, causing the cover plate 18 on the fixed arm 175 to push the material guide cylinder membrane 8 out again and coincide with the top of the mold shell 9. At this time, the threaded sleeve 177 is re-contacted with the side wall of the L-shaped groove 172, and as the threaded rod 173 continues to rotate counterclockwise, the threaded sleeve 177 drives the sliding sleeve 174 to move downward as a whole, so that the upper mold 21 at the bottom of the entire cover plate 18 begins to move downward to squeeze the filled ceramic powder in the mold shell 9.

[0039] The entire limiting cylinder 171 is located at the bottom of the sliding sleeve 174 and is movably connected with a rotating sleeve 176. The rotating sleeve 176 is a plate-rod-plate structure. The square rod on the rotating sleeve 176 passes through the fixed arm 175 and the box cover 1 and is connected to the telescopic cover 5 through the plate. At the same time, the fixed arm 175 is slidably connected to the rod on the rotating sleeve 176, and the telescopic cover 5 and the limiting cylinder 171 are connected in series through the sliding sleeve 174, so that after the entire sliding sleeve 174 is rotated, it can not only drive the fixed arm 175 to rotate, but also drive the telescopic cover 5 to rotate, so that during the rotation of the sliding sleeve 174, the loading and unloading operations of the telescopic cover 5 and the downward pressing and moving operations of the cover plate 18 are realized, and the overall linkage of the equipment is relatively high, which improves the efficiency of dry pressing of ceramic powder.

[0040] Example 2:

[0041] After the guide cylindrical membrane 8 discharges a fixed amount of ceramic powder into the mold shell 9, the lower mold 15 has entered the mold shell 9 at this time, and the ceramic powder falls on the top of the lower mold 15. Later, the threaded rod 173 rotates, which drives the upper mold 21 at the bottom of the entire cover plate 18 to descend in the entire mold shell 9 and begin to contact the ceramic powder on the lower mold 15.

[0042] Usually, the embryos prepared by bidirectional dry pressing are small in size. To facilitate the removal of the embryos, the upper mold 21 is usually formed with an inward or outward protruding structure. After the dry pressing is completed, the embryo is stuck in the upper mold 21 and is taken out of the mold shell 9 by the cover plate 18. Therefore, it is necessary to install a stripping structure on the upper mold 21 to facilitate the rapid removal of the embryos at a later stage. If the embryo has a simple structure, it can be removed by moving the lower mold 15 after the dry pressing is completed.

[0043] During the entire process of pressing the cover plate 18 downward, one side of the cover plate 18 is pressed downward to contact the top of the mold shell 9, as shown in FIG. Figure 4 As shown, the first motor 22 is fixed to both sides of the entire cover 18 by bolts, and a protrusion 23 is fixedly connected to the output end of the first motor 22, and a support column 12 is provided on both sides of the top of the mold shell 9 corresponding to the protrusion 23, and the other end of the support column 12 is located in the mold shell 9 and abuts against the slidable top block 10. When the cover 18 contacts the mold shell 9, one end of the entire support column 12 is located on one side of the protrusion 23. After the first motor 22 drives the protrusion 23 to rotate, the protrusion 23 will abut against the support column 12, causing the support column 12 to drop and abut against the top block 10, so that the top One side of the block 10 protrudes from the inner wall of the mold shell 9. Correspondingly, the bottom of the entire cover plate 18 is fixed with a fixing cylinder 19 by bolts, and a limiting groove 20 is correspondingly provided on the outer wall of the fixing cylinder 19. At this time, the protruding top block 10 will abut against the limiting groove 20 box, completing the fixation of the upper mold 21 at the bottom of the fixing cylinder 19. When the first motor 22 drives the protrusion 23 to rotate again, the protrusion 23 is disengaged from the abutment against the column 12, and the top block 10 is disengaged from the abutment against the limiting groove 20 under the action of the return spring 11. At this time, the upper mold 21 can be pulled out from the mold shell 9;

[0044] After the upper mold 21 squeezes the ceramic powder on the top of the lower mold 15, the density of the ceramic powder in the area from the upper mold 21 to the lower mold 15 decreases in sequence, and the ceramic powder sealing is minimized away from the upper mold 21. In order to make the density of the embryo more uniform, the hydraulic cylinder 14 at the bottom of the lower mold 15 starts to work and squeezes the ceramic powder upward. Due to the squeezing of the entire top block 10 on both sides of the fixed cylinder 19, part of the upward thrust of the lower mold 15 is dispersed onto the mold shell 9. After the downward pressure of the upper mold 21 and the upward push of the lower mold 15, the dry pressing operation of the entire ceramic powder embryo is completed. At this time, the embryo can be directly taken out by the upper mold 21 or the embryo can be taken out of the mold shell 9 by the lowering of the lower mold 15. After the embryo is taken out, the threaded rod 173 is rotated again. The residence time of the threaded sleeve 177 in the top area of ​​the L-shaped groove 172 can be adjusted by the external control panel 27 of the box cover 1. After the embryo is taken out, quantitative feeding is started and dry pressing is restarted.

[0045] A vibrator 13 is also installed on one side of the entire mold shell 9. The vibration generated by the vibrator 13 allows the ceramic powder in the mold shell 9 to quickly discharge the air in the gap, and the ceramic powder particles are arranged more evenly, which is conducive to the rapid molding of the blank in the later stage. At the same time, the mold shell 9, the upper mold 21 and the lower mold 15 can be quickly replaced by opening the box door 26 on one side of the box cover 1.

[0046] Working principle of the present invention:

[0047] The electric push rod 2 located at the top of the box cover 1 is started by the control panel 27. The electric push rod 2 pushes the storage box 3 to rise to a corresponding height, so that the quantitative ceramic powder enters the telescopic cover 5 from the discharge port 4. At the same time, the second motor 24 rotates to drive the threaded rod 173 to rotate. The rotating threaded rod 173 drives the threaded sleeve 177 and the sliding sleeve 174 to move upward on the outer wall of the limiting cylinder 171. When the threaded sleeve 177 contacts the top notch of the L-shaped groove 172, the rotating threaded rod 173 drives the threaded sleeve 177 and the sliding sleeve 174 to rotate on the outer wall of the limiting cylinder 171.

[0048] As the sliding sleeve 174 rotates, it drives the fixed arm 175 and the rotating sleeve 176 on the fixed arm 175 to rotate. The rotating sleeve 176 is located at the top of the box cover 1 and is connected to the telescopic cover 5. At the same time, it drives the telescopic sleeve to rotate at the bottom of the storage box 3 until the bottom of the telescopic sleeve coincides with the feed port 7 at the top of the box cover 1. At the same time, the rotation of the fixed arm 175 drives the cover plate 18 to rotate to one side. The guide cylindrical membrane 8 without the cover plate 18 abutting begins to coincide with the top of the mold shell 9. The quantitative ceramic powder in the telescopic cover 5 flows along the feed port 7 and the guide cylindrical membrane 8 into the surface of the lower mold 15 at the bottom of the mold shell 9.

[0049] After the ceramic powder enters the mold shell 9, the threaded rod 173 rotates in the opposite direction, so that the upper cover plate 18 of the fixed arm 175 overlaps with the top of the mold shell 9, and then the sliding sleeve 174 brings the fixed arm 175 down, so that the upper mold 21 at the bottom of the cover plate 18 begins to descend in the mold shell 9 and contacts the ceramic powder on the surface of the lower mold 15. The upper mold 21 continues to squeeze, while the lower mold 15 does not move. At the same time, the first motor 22 at the top of the cover plate 18 rotates to drive the protrusion 23 to contact the pillar 12. The pillar 12 squeezes the top block 10 in the mold shell 9, so that the top block 10 contacts the limiting groove 20 on one side of the fixed cylinder 19, completing the fixation of the upper mold 21.

[0050] At this time, the hydraulic cylinder 14 in the box cover 1 works to push the lower die 15 upward, so that the lower die 15 abuts against the bottom of the pressed ceramic powder, completing the operation of first pressing the ceramic powder downward and then pressing it upward.

[0051] The above contents are merely examples and explanations of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

[0052] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0053] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A ceramic powder quantitative dry pressing powder filling molding device, comprising a box cover (1), characterized in that: A material storage box (3) is installed on the top of the box cover (1), a mold shell (9) is fixed inside the box cover (1) by bolts, and a vibrator (13) is installed on one side of the mold shell (9); The top of the mold shell (9) is slidably connected to a cover plate (18), and a fixing cylinder (19) is fixed to the bottom of the cover plate (18) by bolts, and the outer walls on both sides of the fixing cylinder (19) are symmetrically provided with limiting grooves (20), and the bottom of the fixing cylinder (19) is clamped and installed with an upper mold (21), and the bottom inner wall of the box cover (1) is symmetrically fixed with a hydraulic cylinder (14) by bolts, and the bottom of the upper mold (21) in the mold shell (9) is slidably connected to a lower mold (15), and the bottom of the lower mold (15) is fixed to one end of the hydraulic cylinder (14) by bolts, and a box door (26) is installed on one side of the box cover (1), and a control panel (27) is installed on one side of the box cover (1); An electric push rod (2) is symmetrically fixed to the top of the box cover (1) by bolts, and one end of the electric push rod (2) is fixed to the bottom of the material storage box (3), a discharge port (4) is provided at the bottom of the material storage box (3), a feed port (7) is provided at the top of the box cover (1), a telescopic cover (5) is slidably connected to the bottom of the material storage box (3), and an arc-shaped baffle (6) is fixed to one side of the telescopic cover (5) by spot welding; A transmission box (16) is installed on the inner wall of the bottom of the box cover (1), and a second motor (24) is fixed to the inner wall of the transmission box (16) by bolts, and a gear (25) is fixed to the output end of the second motor (24) by bolts; A transmission mechanism (17) is installed in the box cover (1), and the transmission mechanism (17) includes a limiting cylinder (171), an L-shaped groove (172), a sliding sleeve (174), a fixed arm (175) and a rotating sleeve (176). The limiting cylinder (171) is fixed to the top of the transmission box (16) in the box cover (1) by spot welding. The outer wall of the limiting cylinder (171) is slidably connected to the sliding sleeve (174). The two sides of the limiting cylinder (171) are movably connected to the threaded rod (173) through bearings, and the outer wall of the threaded rod (173) is threadedly connected to the threaded sleeve (177). One side of the threaded sleeve (177) passes through the L-shaped groove (172) and is fixed to the inner wall of one side of the sliding sleeve (174). A fixed arm (175) is fixed to one side of the sliding sleeve (174) by bolts, and a rotating sleeve (176) is movably connected to the outer wall of the limiting cylinder (171) and located at the bottom of the sliding sleeve (174) through a bearing. The rotating sleeve (176) is a plate-rod-plate structure. The square rod on the rotating sleeve (176) passes through the fixed arm (175) and the box cover (1) and is connected to the telescopic cover (5) through the plate. At the same time, the fixed arm (175) is slidably connected to the square rod on the rotating sleeve (176). One end of the threaded rod (173) passes through the top of the transmission box (16) and is meshed with the gear (25) on the second motor (24) through the gear (25). The top of the cover plate (18) is connected to the fixed arm (175) by bolts.

2. A ceramic powder quantitative dry pressing powder filling molding device according to claim 1, characterized in that: The first motor (22) is symmetrically fixed to both sides of the top of the cover plate (18) by bolts, and a protrusion (23) is sleeved and fixed at the output end of the first motor (22).

3. The ceramic powder quantitative dry pressing powder filling molding device according to claim 2, characterized in that: The top of the inner wall of the mold shell (9) is symmetrically slidably connected to a top block (10), and a return spring (11) is sleeved and installed on the outer wall of the top block (10). A support column (12) is symmetrically slidably connected to the mold shell (9) and located on the top of the top block (10), and one end of the support column (12) is in contact with an inclined surface on one side of the top block (10).

4. A ceramic powder quantitative dry pressing powder filling molding method, used in a ceramic powder quantitative dry pressing powder filling molding device as claimed in any one of claims 1 to 3, characterized in that: The specific steps include: Step 1: quantitative feeding, start the electric push rod (2) located at the top of the box cover (1) through the control panel (27), the electric push rod (2) pushes the storage box (3) to rise to a corresponding height, so that the quantitative ceramic powder enters the telescopic cover (5) from the discharge port (4), and at the same time, the second motor (24) rotates to drive the threaded rod (173) to rotate, and the rotating threaded rod (173) drives the threaded sleeve (177) and the sliding sleeve (174) to move upward on the outer wall of the limiting cylinder (171). When the threaded sleeve (177) contacts the top notch of the L-shaped groove (172), the rotating threaded rod (173) drives the threaded sleeve (177) and the sliding sleeve (174) to rotate on the outer wall of the limiting cylinder (171); When the sliding sleeve (174) rotates, it drives the fixed arm (175) and the rotating sleeve (176) on the fixed arm (175) to rotate. The rotating sleeve (176) is located at the top of the box cover (1) and is connected to the telescopic cover (5). At the same time, it drives the telescopic sleeve to rotate at the bottom of the storage box (3) until the bottom of the telescopic sleeve coincides with the feed port (7) at the top of the box cover (1). At the same time, the fixed arm (175) rotates and drives the cover plate (18) to rotate to one side. The guide cylindrical membrane (8) without the cover plate (18) abutting begins to coincide with the top of the mold shell (9). The quantitative ceramic powder in the telescopic cover (5) enters the surface of the lower mold (15) at the bottom of the mold shell (9) along the feed port (7) and the guide cylindrical membrane (8); Step 2: Double-sided pressing. After the ceramic powder enters the mold shell (9), the threaded rod (173) rotates in the opposite direction, so that the upper cover plate (18) of the fixed arm (175) overlaps with the top of the mold shell (9). Then the sliding sleeve (174) brings the fixed arm (175) down, so that the upper mold (21) at the bottom of the cover plate (18) begins to descend in the mold shell (9) and contacts the ceramic powder on the surface of the lower mold (15). The upper mold (21) continues to squeeze, while the lower mold (15) does not move. At the same time, the first motor (22) at the top of the cover plate (18) rotates to drive the protrusion (23) to contact the support column (12). The support column (12) squeezes the top block (10) in the mold shell (9), so that the top block (10) contacts the limiting groove (20) on one side of the fixed cylinder (19), completing the fixation of the upper mold (21); At this time, the hydraulic cylinder (14) in the box cover (1) works to push the lower die (15) upward, so that the lower die (15) abuts against the bottom of the pressed ceramic powder, completing the operation of first pressing the ceramic powder downward and then pressing it upward.

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