Porous mold for ceramic slip casting

Abstract

The invention relates to the technical field of injection molding molds, in particular to a porous mold for ceramic slip casting, which comprises a porous ceramic slip casting mold for ceramic slip casting and a support frame for supporting the porous ceramic slip casting mold, the porous ceramic slip casting mold is composed of an upper mold and a lower mold which are distributed up and down, a mold plate is arranged above the upper mold, and a mold cover for sealing is fixedly connected between the mold plate and the upper mold; a transmission structure for lifting the upper die is installed on the supporting frame, the transmission structure is composed of a driving motor, a lead screw and a transmission part, the lead screw is rotatably installed on the supporting frame and penetrates through the interior of the die plate in a threaded mode, the transmission part is installed between the driving motor and the lead screw, and functional mechanisms are arranged on the side wall of the lower die and the supporting frame. The functional mechanism comprises an air exhaust structure and a material ejection structure. Air in the mold can be exhausted, defects such as bubbles and air holes are avoided, and the appearance quality and performance of products are improved.

Description

Technical Field

[0001] The invention relates to a porous mould for ceramic slip casting, in particular to a porous mould for ceramic slip casting, and belongs to the technical field of injection moulding moulds. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] Ceramic slip casting porous molds are usually made of gypsum or other porous materials, which are absorbent and porous. These molds are designed so that the ceramic slurry can gradually solidify into a green body after being injected through the capillary suction of the mold.

[0004] Chinese patent CN211591110U discloses "a porous injection mold, comprising an upper mold body and a lower mold body, wherein a mold core cavity is formed between the upper mold body and the lower mold body, and an exhaust channel is equidistantly connected to the upper part of the upper mold body. The porous injection mold utilizes two cylinder bodies I to drive the pulley to move in the slide rail, so that the two left mold bodies and the right mold bodies can be clamped and molded or separated and demolded; the cylinder body II can be used to clamp and molded or separate and demold the upper mold body and the lower mold body."

[0005] The above patent has the following deficiencies: it cannot discharge the gas in the mold before the material is injected. If the gas in the mold is not discharged in time, the flow resistance of the plastic melt in the mold will increase, resulting in increased injection pressure, thereby increasing energy consumption and equipment wear. Poor exhaust will lead to slower filling speed during the injection molding process, and may even cause problems such as insufficient filling or burning of glue, thereby slowing down the entire production process.

[0006] Therefore, it is urgent to improve the injection molding porous mold to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a porous mold for ceramic slip casting, which can discharge the air in the mold, avoid the generation of defects such as bubbles and pores, and improve the appearance quality and performance of the product.

[0008] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: a porous mold for ceramic slip casting, comprising a porous ceramic slip casting mold for ceramic slip casting and a support frame for supporting the porous ceramic slip casting mold, the porous ceramic slip casting mold is composed of an upper mold and a lower mold distributed up and down, a template is arranged above the upper mold, and a mold cover for sealing is fixedly connected between the template and the upper mold; The support frame is provided with a transmission structure for lifting the upper mold, and the transmission structure is composed of a driving motor, a lead screw rotatably mounted on the support frame and threadedly penetrating the interior of the mold plate, and a transmission member installed between the driving motor and the lead screw; Functional mechanisms are arranged on the side wall of the lower mold and the support frame, wherein the functional mechanisms include an air extraction structure and a material ejection structure; the air extraction structure includes an air extraction pipe, an impeller and a connecting pipe; the material ejection structure includes a first return spring, an abutment plate and a ejector rod; The template is provided with a linkage structure used in conjunction with the vacuum structure and the ejection structure, and the linkage structure includes a tooth plate slidably mounted on the template, an abutment rod fixedly connected to the bottom end of the tooth plate and abutting against the upper surface of the abutment plate, a connecting shaft fixedly mounted on one side of the impeller, and a transmission gear fixedly mounted on the other end of the connecting shaft and meshing with the tooth plate.

[0009] Preferably, the support frame includes a workbench and support legs welded to the four corners of the lower surface of the workbench, and the lower mold is fixedly mounted on the upper surface of the workbench by multiple sets of bolts; A feeding structure for feeding materials is installed on the template, and the feeding structure includes a feeding cylinder vertically installed on the upper surface of the above-mentioned template, a feeding hopper fixedly connected to the top of the feeding cylinder, a reduction motor arranged above the feeding hopper, a rotating shaft fixedly installed on the output shaft of the reduction motor, and an auger fixedly installed at the bottom end of the rotating shaft and extending into the feeding cylinder for feeding materials. A cross mounting frame for fixing the reduction motor is welded to the inner side of the feeding hopper, and a connecting arm is installed on the outer surface of the top end of the rotating shaft by bolts, and a scraper that abuts against the inner wall of the feeding hopper is installed at the other end of the connecting arm.

[0010] Preferably, the template, the mold cover and the upper mold are provided with injection holes for ceramic slurry injection, positioning rods are symmetrically installed at the edge of the lower surface of the opposite side of the mold cover, and the lower mold is provided with a positioning groove adapted to the positioning rod; The upper mold and the lower mold are sealed by plugging and fitting the positioning rod into the positioning groove, and the length of the upper mold is shorter than the exhaust structure.

[0011] Preferably, a mounting gasket mounted on the side wall of the lower mold is welded to one end of the exhaust pipe close to the lower mold, the connecting pipe is fixedly connected to one end of the exhaust pipe and extends into the lower mold, and a valve for sealing is installed on the exhaust pipe.

[0012] Preferably, the impeller is mounted on the inner side of the other end of the exhaust pipe through a bracket, and the outer shape of the connecting pipe is smaller than that of the exhaust pipe.

[0013] Preferably, the abutment plate is located below the workbench, and the upper and lower ends of the first return spring are fixedly installed between the workbench and the abutment plate, and the push rod is fixedly installed on the lower surface of the abutment plate and extends to the inside of the lower mold.

[0014] Preferably, the first return spring surrounds the outside of the ejector rod, and a through hole is provided on the side where the bottom wall of the lower mold is connected to the workbench for extending the ejector rod.

[0015] Preferably, an extension hole is provided inside the workbench for the abutment rod to penetrate the inside of the workbench and abut against the upper surface of the abutment plate, and a cam adjustment mechanism is provided on the back of the tooth plate, the cam adjustment mechanism comprises a concave plate and a cam, the concave plate is fixedly mounted on the lower surface of the template, and the cam is fixedly mounted on the back of the tooth plate and is rollingly connected with the outside of the concave plate; Among them, a limiting structure for limiting the abutment rod and the top material structure is arranged under the workbench, and the limiting structure includes a limiting plate fixedly installed between four supporting legs and two limiting protrusions symmetrically installed on the upper surface of the limiting plate. The abutment plate moves downward through the abutment of the abutment rod and abuts against the top of the limiting protrusion to achieve limitation.

[0016] Preferably, the drive motor is fixedly mounted on the lower surface of the limit plate, and the transmission member includes a rotating shaft fixedly mounted on the output shaft of the drive motor, a worm fixedly mounted on the other end of the rotating shaft, and a worm wheel fixedly mounted on the bottom end of the screw and meshing with the worm, and a limit seat for limiting the rotating shaft is fixedly mounted on the lower surface of the limit plate.

[0017] Preferably, the template, the mold cover and the upper mold are provided with exhaust components, which are composed of a second return spring, a piston block and a scraper block. There are two scrapers, and the two scrapers are fixedly installed on opposite sides of the piston block. Among them, a first exhaust channel is opened inside the template, the mold cover and the upper mold, and a second exhaust channel connected to the first exhaust channel is opened inside the template and the mold cover, the top of the second exhaust channel is connected to the upper surface of the template, and connecting blocks are welded at the upper and lower ends of the second return spring, the top connecting block is fixed on the top wall of the first exhaust channel, and the lower surface of the bottom connecting block is fixed to the top of the piston block.

[0018] The present invention has at least the following beneficial effects: 1. The porous mold for ceramic slip casting can be driven synchronously. When the upper mold moves, the gear is driven to rotate through the rack, and then the impeller in the exhaust structure is driven to work, ensuring that the exhaust process is synchronized with the movement of the upper mold, improving the efficiency and accuracy of exhaust, and avoiding bubbles at the same time. Since the exhaust process is closely synchronized with the injection molding process, the gas in the mold can be more effectively removed during the injection molding process, the generation of bubbles can be reduced, and the quality of injection molded products can be improved. In addition, the linkage mode of the transmission gear and the toothed plate transmission realizes the automation of the exhaust process, reduces manual operation, improves production efficiency, and reduces the failure rate. Mechanical linkage is more stable and reliable than manual operation, reducing failures and downtime caused by improper operation or negligence.

[0019] 2. The porous mold for ceramic slip injection molding, when the tooth plate moves downward, the abutment rod abuts against the abutment plate and drives the ejector rod to move downward, so that the ejector rod is flush with the inner bottom wall of the lower mold, so as to guide the material through the injection hole. After the ceramic slip injection molding, the upper mold is separated from the lower mold, the abutment rod is separated from the contact with the abutment plate, and the ejector rod is driven upward by the first return spring, thereby lifting the finished product in the lower mold to facilitate material unloading.

[0020] 3. The porous mold for ceramic injection molding has a lower mold lower than the exhaust structure, so the ceramic material will not affect the use of the porous ceramic injection molding mold. At the same time, the connecting pipe is blocked by a valve so that the upper mold and the lower mold can be separated. After the porous ceramic injection molding mold injects ceramic materials, the first exhaust channel and the second exhaust channel are opened and closed by installing a piston block and a second return spring. When the gas pressure inside the porous ceramic injection molding mold increases, the piston block will be lifted up. At this time, the first exhaust channel and the second exhaust channel are connected to achieve gas discharge. Conversely, after the gas is discharged, the second return spring will push the piston block downward to achieve the blocking of the first exhaust channel and the second exhaust channel. When the piston block moves up and down, the scraper block can clean up the impurities remaining in the first exhaust channel to avoid blockage of the first exhaust channel.

[0021] 4. The porous mold for ceramic grouting molding can accurately control the delivery amount of ceramic slurry when using the auger to ensure the consistent injection amount of the mold, which helps to improve the uniformity and consistency of the product. During the process of conveying the slurry, the spiral blades of the auger will have a certain stirring effect on the slurry, which helps to evenly distribute the slurry in the mold, reduce local accumulation or vacancies, and improve the uniformity and appearance quality of the product. At the same time, the auger can generate a certain pressure when conveying the slurry, which helps to remove bubbles and impurities in the slurry, reduce pores and defects in the product, and improve the density and strength of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the separation of the upper mold and the lower mold of the present invention; Figure 3 It is a schematic diagram of the lower mold of the present invention; Figure 4 It is a schematic diagram of the top material structure of the present invention; Figure 5 It is a schematic diagram of the installation of the top material structure of the present invention; Figure 6 It is a schematic diagram of the linkage structure of the present invention; Figure 7 It is a schematic diagram of the linkage structure and the air extraction structure of the present invention; Figure 8 It is a schematic diagram of the limiting structure of the present invention; Fig. 9 It is a schematic diagram of the transmission structure of the present invention; Fig.10 It is a cross-sectional view of the exhaust member structure of the present invention; Fig.11 It is a schematic diagram of the cam adjustment mechanism of the present invention; Fig.12 It is a schematic diagram of the installation of the material conveying structure of the present invention; Fig.13 It is a schematic diagram of the feeding structure of the present invention.

[0023] In the figure, 1. porous ceramic grouting molding mold; 101. lower mold; 102. template; 103. mold cover; 104. upper mold; 105. injection hole; 106. positioning rod; 107. positioning groove; 2. support frame; 201. workbench; 202. support leg; 3. transmission structure; 301. drive motor; 302. lead screw; 303. rotating shaft; 304. worm gear; 305. worm; 306. limit seat; 4. exhaust structure; 401. exhaust pipe; 4011. installation gasket; 402. impeller; 403. connecting pipe; 404. valve; 5. ejector structure; 501. first return spring; 502. abutment plate ;503, push rod; 6, linkage structure; 601, tooth plate; 602, abutment rod; 603, connecting shaft; 604, transmission gear; 605, cam adjustment mechanism; 7, limiting structure; 701, limiting plate; 702, limiting protrusion; 8, exhaust member; 801, first exhaust channel; 802, second exhaust channel; 803, connecting block; 804, second return spring; 805, piston block; 806, scraper block; 9, feeding structure; 901, feeding cylinder; 902, feeding hopper; 903, cross mounting bracket; 904, reduction motor; 905, rotating shaft; 906, auger; 907, connecting arm; 908, scraper. DETAILED DESCRIPTION

[0024] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] like Figure 1 As shown, the porous mold for ceramic slip casting provided in this embodiment includes a porous ceramic slip casting mold 1 for ceramic slip casting and a support frame 2 for supporting the porous ceramic slip casting mold 1. The porous ceramic slip casting mold 1 is composed of an upper mold 104 and a lower mold 101 distributed up and down. A template 102 is arranged above the upper mold 104, and a mold cover 103 for sealing is fixedly connected between the template 102 and the upper mold 104; the support frame 2 includes a workbench 201 and support legs 202 welded to the four corners of the lower surface of the workbench 201, and the lower mold 101 is fixedly installed on the upper surface of the workbench 201 by multiple groups of bolts. A limit rod that runs through the interior of the template 102 is fixedly installed on the upper surface of the workbench 201 to ensure the linear displacement of the template 102 up and down.

[0026] Among them, Figure 1 and Figure 2As shown, the mold plate 102, the mold cover 103 and the upper mold 104 are provided with injection holes 105 for ceramic slurry injection, the mold cover 103 is symmetrically provided with positioning rods 106 at the edges of the lower surface on the opposite side, and the lower mold 101 is provided with positioning grooves 107 adapted to the positioning rods 106; specifically, the upper mold 104 and the lower mold 101 are sealed by the plug-in cooperation of the positioning rods 106 and the positioning grooves 107. Fig.11 and Fig.12 As shown, a feeding structure 9 for feeding materials is installed on the template 102, and the feeding structure 9 includes a feeding cylinder 901 vertically installed on the upper surface of the template 102, a feeding hopper 902 fixedly connected to the top of the feeding cylinder 901, a reduction motor 904 arranged above the feeding hopper 902, a rotating shaft 905 fixedly installed on the output shaft of the reduction motor 904, and an auger 906 fixedly installed on the bottom end of the rotating shaft 905 and extending into the feeding cylinder 901 for feeding materials, a cross mounting frame 903 fixed to the reduction motor 904 is welded to the inner side of the feeding hopper 902, and a connecting arm 907 is installed on the outer surface of the top end of the rotating shaft 905 by bolts, and a scraper 908 that abuts against the inner wall of the feeding hopper 902 is installed at the other end of the connecting arm 907. When in use, the auger 906 can accurately control the delivery amount of the ceramic slurry, ensure the same injection amount of the mold, and help improve the uniformity and consistency of the product. In the process of conveying the slurry, the spiral blades of the auger 906 will have a certain stirring effect on the slurry, which is helpful for the uniform distribution of the slurry in the mold, reducing local accumulation or vacancies, and improving the uniformity and appearance quality of the product. At the same time, the auger 906 can generate a certain pressure when conveying the slurry, which helps to remove bubbles and impurities in the slurry, reduce pores and defects in the product, and improve the density and strength of the product. The feeding cylinder 901 is connected to the injection hole 105.

[0027] In this embodiment, if Figure 2 and Fig. 9 As shown, in order to make the upper mold 104 fit with the lower mold 101, a transmission structure 3 for lifting the upper mold 104 is installed on the support frame 2, and the transmission structure 3 consists of a driving motor 301, a screw 302 rotatably installed on the support frame 2 and threaded through the inside of the template 102, and a transmission member installed between the driving motor 301 and the screw 302; the transmission member includes a rotating shaft 303 fixedly installed on the output shaft of the driving motor 301, a worm 305 fixedly installed at the other end of the rotating shaft 303, and a worm wheel 304 fixedly installed at the bottom end of the screw 302 and meshing with the worm 305, and a limit seat 306 for limiting the rotating shaft 303 is fixedly installed on the lower surface of the limit plate 701.

[0028] In order to improve the production quality of the porous ceramic slip casting mold 1, as Figure 1 - Figure 5As shown, functional mechanisms are arranged on the side walls of the lower mold 101 and the support frame 2, wherein the functional mechanisms include an exhaust structure 4 and a material-lifting structure 5; the exhaust structure 4 includes an exhaust pipe 401, an impeller 402 and a connecting pipe 403; the length of the upper mold 104 is lower than the exhaust structure 4, so as to ensure the normal operation of the porous ceramic slip casting mold 1.

[0029] Among them, Figure 7 As shown, a mounting gasket 4011 mounted on the side wall of the lower mold 101 is welded to one end of the exhaust pipe 401 close to the lower mold 101, and four sets of bolts are arranged in the mounting gasket 4011. The connecting pipe 403 is fixedly connected to one end of the exhaust pipe 401 and extends into the lower mold 101, and a valve 404 for sealing is installed on the exhaust pipe 401. The connecting pipe 403 is blocked by the valve 404 so that the upper mold 104 and the lower mold 101 can be separated. The impeller 402 is installed on the inner side of the other end of the exhaust pipe 401 through a bracket, and the outer shape of the connecting pipe 403 is smaller than that of the exhaust pipe 401.

[0030] Specifically, Figure 4 and Figure 5 As shown, the ejection structure 5 includes a first return spring 501, an abutment plate 502 and an ejector rod 503; the abutment plate 502 is located below the workbench 201, and the upper and lower ends of the first return spring 501 are fixedly installed between the workbench 201 and the abutment plate 502, and the ejector rod 503 is fixedly installed on the lower surface of the abutment plate 502 and extends to the inside of the lower mold 101. There are two ejection structures 5, and the two ejection structures 5 are symmetrically arranged to ensure stable ejection of the product. The ejection structure 5 uses the deformation effect of the first return spring 501 to eject the product in the lower mold 101, which can improve the product unloading efficiency, while reducing the increase in structure and reducing production costs.

[0031] It should be noted that the first return spring 501 surrounds the outside of the ejector rod 503, and a perforation is provided on the inner bottom wall of the lower mold 101 and the side connected to the workbench 201 for the extension of the ejector rod 503. The perforation is adapted to the shape of the ejector rod 503, and in order to further improve the material discharge effect, the ejector rod 503 can be set to a telescopic shape so as to better lift the product in the lower mold 101. The top end of the ejector rod 503 is sleeved with a sealing sleeve, which can not only protect the product, but also strengthen the sealing of the perforation, thereby improving the production quality of the product.

[0032] In this embodiment, in order to achieve efficient gas extraction and synchronization, improve production efficiency and stability, such as Figure 1 , Figure 6 - Fig. 9As shown, a linkage structure 6 is provided on the template 102 for use in conjunction with the vacuum structure 4 and the top material structure 5, and the linkage structure 6 includes a tooth plate 601 slidably mounted on the template 102, an abutment rod 602 fixedly connected to the bottom end of the tooth plate 601 and abutting against the upper surface of the abutment plate 502, a connecting shaft 603 fixedly mounted on one side of the impeller 402, and a transmission gear 604 fixedly mounted on the other end of the connecting shaft 603 and meshing with the tooth plate 601.

[0033] Specifically, Figure 8 and Fig.11 As shown, an extension hole is provided inside the workbench 201 for the abutment rod 602 to penetrate the inside of the workbench 201 and abut against the upper surface of the abutment plate 502. A cam adjustment mechanism 605 is provided on the back of the tooth plate 601. The cam adjustment mechanism 605 includes a concave plate and a cam. The concave plate is fixedly mounted on the lower surface of the template 102, and the cam is fixedly mounted on the back of the tooth plate 601 and is connected to the outside of the concave plate by rolling. An arc groove for disengaging the tooth plate 601 from the transmission gear 604 is provided on the bottom side of the groove. The tooth plate 601 is connected to the inside of the template 102 through an elastic telescopic rod, and the rolling cooperation of the cam adjustment mechanism 605 enables the tooth plate 601 to exhaust when it is lifted. When the exhaust reaches a certain degree, the transmission gear 604 is separated from the tooth plate 601, and continuing to lift and lower will not affect the exhaust. The size of the extension hole is adapted to the moving distance of the tooth plate 601.

[0034] When in use, the tooth plate 601 drives the transmission gear 604 to rotate, thereby driving the impeller 402 in the exhaust structure 4 to work. This mechanical linkage ensures that the exhaust process is synchronized with the movement of the mold, improves the efficiency and accuracy of exhaust, and realizes synchronous drive. Since the exhaust process is closely synchronized with the injection molding process, it can more effectively remove the gas in the mold during the injection molding process, reduce the generation of bubbles, and improve the quality of the injection molded product. In addition, when the tooth plate 601 moves downward, the abutment rod 602 abuts against the abutment plate 502 and drives the ejector rod 503 to move downward, so that the ejector rod is flush with the inner bottom wall of the lower mold 101 of 503, so as to guide the material through the injection hole 105. After the ceramic slip injection molding, the upper mold 104 is separated from the lower mold 101, the abutment rod 602 is separated from the contact with the abutment plate 502, and the ejector rod 503 is driven to move upward by the first return spring 501, thereby lifting the finished product in the lower mold 101 to facilitate unloading.

[0035] It is understandable that discharging the gas in the mold can reduce the generation of defects such as bubbles and pores, improve the surface finish and overall quality of the product. After the gas is discharged, the material can fill the mold cavity more smoothly, reduce the filling resistance, improve the injection molding efficiency, and reduce the injection molding failure and rework caused by gas problems, thereby shortening the product molding cycle, reducing mold damage caused by gas impact and wear, and extending the service life of the mold.

[0036] Among them, Figure 8 As shown, a limiting structure 7 for limiting the abutment rod 602 and the ejection structure 5 is provided below the workbench 201. The limiting structure 7 includes a limiting plate 701 fixedly mounted between the four support legs 202 and two limiting protrusions 702 symmetrically mounted on the upper surface of the limiting plate 701. The abutment plate 502 moves downward through the abutment of the abutment rod 602 and abuts against the top of the limiting protrusion 702 to achieve limiting. The driving motor 301 is fixedly mounted on the lower surface of the limiting plate 701. The lead screw 302 runs through the inside of the workbench 201 and the limiting plate 701, and the lead screw 302 is connected to the inside through a bearing.

[0037] like Figure 8 As shown, when this embodiment is in use, when the abutment rod 602 abuts against the abutment plate 502 and drives the push rod 503 to move downward, when the push rod is flush with the inner bottom wall of the lower mold 101 of 503, the abutment plate 502 will abut against the top of the limiting protrusion 702, thereby realizing the limiting effect, and at the same time limiting the abutment plate 502 and the tooth plate 601, realizing multiple limiting effects.

[0038] In this embodiment, in order to further improve the exhaust effect, Fig.10 As shown, the template 102, the mold cover 103 and the upper mold 104 are provided with an exhaust member 8, which is composed of a second return spring 804, a piston block 805 and a scraper block 806. There are two scrapers 806, and the two scrapers 806 are fixedly installed on the opposite side of the piston block 805.

[0039] Among them, a first exhaust channel 801 is opened inside the template 102, the mold cover 103 and the upper mold 104, and a second exhaust channel 802 connected to the first exhaust channel 801 is opened inside the template 102 and the mold cover 103, the top of the second exhaust channel 802 is connected to the upper surface of the template 102, and connecting blocks 803 are welded at the upper and lower ends of the second return spring 804, the top connecting block 803 is fixed on the inner top wall of the first exhaust channel 801, and the lower surface of the bottom connecting block 803 is fixed to the top of the piston block 805. After the porous ceramic injection molding mold 1 injects ceramic material, the first exhaust channel 801 and the second exhaust channel 802 are opened and closed by installing the piston block 805 and the second return spring 804. When the gas pressure inside the porous ceramic injection molding mold 1 increases, the piston block 805 will be lifted up. At this time, the first exhaust channel 801 and the second exhaust channel 802 are connected to achieve gas discharge. Conversely, after the gas is discharged, the second return spring 804 will push the piston block 805 downward to achieve the blocking of the first exhaust channel 801 and the second exhaust channel 802. When the piston block 805 moves up and down, the scraper block 806 can clean up the impurities remaining in the first exhaust channel 801 to avoid blockage of the first exhaust channel 801.

[0040] like Figure 1 - Fig.10 As shown, the principle of the porous mold for ceramic slip casting provided in this embodiment is as follows: When in use, the driving motor 301 and the lead screw 302 are driven to rotate, driving the upper mold 104 to move downward and fit with the lower mold 101. When the upper mold 104 moves, the transmission gear 604 is driven to rotate through the tooth plate 601, thereby driving the impeller 402 in the exhaust structure 4 to work. This mechanical linkage ensures that the exhaust process is synchronized with the movement of the upper mold, improves the efficiency and accuracy of the exhaust, and realizes synchronous drive. Since the exhaust process is closely synchronized with the injection molding process, it can more effectively remove the gas in the mold during the injection molding process, reducing Less bubbles are generated, which improves the quality of injection molded products. In addition, when the tooth plate 601 moves downward, the abutment rod 602 abuts against the abutment plate 502 and drives the ejector rod 503 to move downward, so that the ejector rod is flush with the inner bottom wall of the lower mold 101 of 503, so as to guide the material through the injection hole 105. After the ceramic is injection-molded, the upper mold 104 is separated from the lower mold 101, and the abutment rod 602 is separated from the contact with the abutment plate 502, and the ejector rod 503 is driven to move upward through the first return spring 501, thereby lifting the finished product in the lower mold 101 to facilitate material unloading.

[0041] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0042] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0043] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A porous mold for ceramic slip casting, comprising a porous ceramic slip casting mold (1) for ceramic slip casting and a support frame (2) for supporting the porous ceramic slip casting mold (1), characterized in that: The porous ceramic slip casting mold (1) is composed of an upper mold (104) and a lower mold (101) arranged above and below, a template (102) is arranged above the upper mold (104), and a mold cover (103) for sealing is fixedly connected between the template (102) and the upper mold (104); A transmission structure (3) for lifting and lowering the upper mold (104) is installed on the support frame (2), and the transmission structure (3) comprises a driving motor (301), a lead screw (302) rotatably installed on the support frame (2) and threadedly penetrating the interior of the mold plate (102), and a transmission member installed between the driving motor (301) and the lead screw (302); Functional mechanisms are provided on the side walls of the lower mold (101) and on the support frame (2), wherein the functional mechanisms include an air extraction structure (4) and a material ejection structure (5); the air extraction structure (4) includes an air extraction pipe (401), an impeller (402) and a connecting pipe (403); the material ejection structure (5) includes a first return spring (501), an abutment plate (502) and a ejector rod (503); The template (102) is provided with a linkage structure (6) for use in conjunction with the air extraction structure (4) and the material ejection structure (5), the linkage structure (6) comprising a tooth plate (601) slidably mounted on the template (102), an abutment rod (602) fixedly connected to the bottom end of the tooth plate (601) and abutting against the upper surface of the abutment plate (502), a connecting shaft (603) fixedly mounted on one side of the impeller (402), and a transmission gear (604) fixedly mounted on the other end of the connecting shaft (603) and meshing with the tooth plate (601).

2. A porous mold for ceramic slip casting according to claim 1, characterized in that: The support frame (2) comprises a workbench (201) and support legs (202) welded to four corners of the lower surface of the workbench (201); the lower mold (101) is fixedly mounted on the upper surface of the workbench (201) by means of a plurality of sets of bolts; A feeding structure (9) for feeding materials is installed on the template (102), and the feeding structure (9) comprises a feeding cylinder (901) vertically installed on the upper surface of the template (102), a feeding hopper (902) fixedly connected to the top of the feeding cylinder (901), a reduction motor (904) arranged above the feeding hopper (902), a rotating shaft (905) fixedly installed on the output shaft of the reduction motor (904), and an auger (906) fixedly installed on the bottom end of the rotating shaft (905) and extending into the feeding cylinder (901) for feeding materials, a cross mounting frame (903) for fixing the reduction motor (904) is welded on the inner side of the feeding hopper (902), and a connecting arm (907) is installed on the outer surface of the top end of the rotating shaft (905) by bolts, and a scraper (908) is installed at the other end of the connecting arm (907) to abut against the inner wall of the feeding hopper (902).

3. A porous mold for ceramic slip casting according to claim 1, characterized in that: The template (102), the mold cover (103) and the upper mold (104) are provided with injection holes (105) for ceramic slurry injection, positioning rods (106) are symmetrically installed at the edge of the lower surface of the opposite side of the mold cover (103), and the lower mold (101) is provided with a positioning groove (107) adapted to the positioning rod (106); The upper die (104) and the lower die (101) are sealed by plugging and fitting the positioning rod (106) into the positioning groove (107), and the length of the upper die (104) is shorter than the exhaust structure (4).

4. The porous mold for ceramic slip casting according to claim 1, characterized in that: An installation gasket (4011) installed on the side wall of the lower mold (101) is welded to one end of the exhaust pipe (401) close to the lower mold (101), the connecting pipe (403) is fixedly connected to one end of the exhaust pipe (401) and extends into the lower mold (101), and a valve (404) for sealing is installed on the exhaust pipe (401).

5. The porous mold for ceramic slip casting according to claim 1, characterized in that: The impeller (402) is mounted on the inner side of the other end of the air extraction pipe (401) via a bracket, and the connecting pipe (403) has a smaller outer shape than the air extraction pipe (401).

6. The porous mold for ceramic slip casting according to claim 2, characterized in that: The abutment plate (502) is located below the workbench (201), and the upper and lower ends of the first return spring (501) are fixedly installed between the workbench (201) and the abutment plate (502), and the push rod (503) is fixedly installed on the lower surface of the abutment plate (502) and extends into the interior of the lower mold (101).

7. A porous mold for ceramic slip casting according to claim 6, characterized in that: The first return spring (501) surrounds the outside of the ejector rod (503), and a through hole is provided on the side where the inner bottom wall of the lower mold (101) and the workbench (201) are connected, for extending the ejector rod (503).

8. The porous mold for ceramic slip casting according to claim 6, characterized in that: An extension hole is provided inside the workbench (201) for the abutment rod (602) to penetrate the inside of the workbench (201) and abut against the upper surface of the abutment plate (502); a cam adjustment mechanism (605) is provided on the back of the tooth plate (601); the cam adjustment mechanism (605) comprises a concave plate and a cam; the concave plate is fixedly mounted on the lower surface of the template (102); and the cam is fixedly mounted on the back of the tooth plate (601) and is rollingly connected to the outside of the concave plate; A limiting structure (7) for limiting the abutment rod (602) and the material lifting structure (5) is provided below the workbench (201), the limiting structure (7) comprising a limiting plate (701) fixedly mounted between four supporting legs (202) and two limiting protrusions (702) symmetrically mounted on the upper surface of the limiting plate (701), the abutment plate (502) being moved downward by the abutment rod (602) to abut against the top of the limiting protrusion (702) to achieve limiting.

9. The porous mold for ceramic slip casting according to claim 8, characterized in that: The drive motor (301) is fixedly mounted on the lower surface of the limit plate (701); the transmission member comprises a rotating shaft (303) fixedly mounted on the output shaft of the drive motor (301); a worm (305) fixedly mounted on the other end of the rotating shaft (303); and a worm wheel (304) fixedly mounted on the bottom end of the lead screw (302) and meshing with the worm (305); and a limit seat (306) for limiting the rotating shaft (303) is fixedly mounted on the lower surface of the limit plate (701).

10. The porous mold for ceramic slip casting according to claim 1, characterized in that: An exhaust member (8) is provided inside the mold plate (102), the mold cover (103) and the upper mold (104), and the exhaust member (8) is composed of a second return spring (804), a piston block (805) and a scraper block (806). There are two scrapers (806), and the two scrapers (806) are fixedly mounted on opposite sides of the piston block (805); The template (102), the mold cover (103) and the upper mold (104) are provided with a first exhaust channel (801), and the template (102) and the mold cover (103) are provided with a second exhaust channel (802) connected to the first exhaust channel (801), the top of the second exhaust channel (802) is connected to the upper surface of the template (102), and the upper and lower ends of the second return spring (804) are welded with connecting blocks (803), the top of the connecting block (803) is fixed to the inner top wall of the first exhaust channel (801), and the lower surface of the bottom connecting block (803) is fixed to the top of the piston block (805).

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