Forming die for oxide ceramic product

Abstract

The utility model relates to the technical field of dies, in particular to a forming die of an oxide ceramic product, which comprises a base, a die mechanism is arranged on the base and used for forming the oxide ceramic product, the die mechanism comprises a lower die, an upper die and a lower die, the lower die comprises a lower die holder fixed at the top of the base, and an inner cavity is arranged at the upper end in the lower die holder; four straight grooves distributed circumferentially are formed in the lower end of the interior of the inner cavity, sliding blocks are slidably installed in the straight grooves, a shaping plate is fixed to the upper ends of the sliding blocks, a circular plate is rotatably installed at the lower end of the interior of the lower die base, four arc grooves distributed circumferentially are formed in the outer edge of the upper end of the circular plate, cams are rotatably installed at the lower ends of the sliding blocks, and the cams are located in the arc grooves; a driving piece is mounted on the lower die holder and is used for driving the circular plate to rotate; the upper mold is arranged above the lower mold and is used for compacting the filler in the lower mold; the outer wall of the product and the shaping plate are free of contact friction during demolding, internal damage is avoided, it is guaranteed that no hidden defect exists after sintering, and the quality and yield of finished products are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a molding mold for oxide ceramic products. Background Technology

[0002] The atomic bonding of oxide ceramic materials is mainly ionic, with some covalent bonds, thus possessing many excellent properties. Most oxides have high melting points, good electrical insulation properties, and especially excellent chemical stability and oxidation resistance, which have led to their widespread application in engineering fields.

[0003] According to CN213829470U, an oxide ceramic forming device is disclosed. This technology discloses "an oxide ceramic forming device, including a base, multiple sets of buttons fixedly installed on one side of the base, a bracket fixedly connected to the top of the base, a telescopic rod one fixedly connected to one side of the bracket, a left pressure module fixedly installed on one side of the telescopic rod one by bolts, a telescopic rod two fixedly connected to the other side of the bracket, a right pressure module fixedly installed on one side of the telescopic rod two by bolts, sliders fixedly connected to the bottom of both the left and right pressure modules, a groove opened on the top of the base, a fixed plate fixedly connected to the top of the base, a connecting rod fixedly installed on one side of the fixed plate by bolts, a mold fixedly installed on one side of the connecting rod, a support frame fixedly connected to the top of the bracket, and a hydraulic rod fixedly installed inside the support frame." This technology has the technical effect that "other types of products can be produced simply by replacing the left pressure module, the right pressure module, and the mold, and installation and disassembly are convenient and quick."

[0004] The existing method requires that the ceramic plate be completely removed from the mold after it is formed before the next filling operation can be carried out; when the green body is demolded, it is pushed out of the mold by the bottom lifting mechanism; however, during the ejection process, the edge of the green body is in continuous frictional contact with the inner wall of the mold frame, which causes the internal microstructure of the green body to change and generate hidden cracks. Although the right-angle part of the green body remains intact, these hidden defects will appear as obvious cracks in the subsequent sintering process. This process defect not only seriously affects the product quality, but also leads to a significant decrease in the production yield. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a molding die for oxide ceramic products. By eliminating contact friction between the outer wall of the product and the shaping plate during demolding, internal damage is avoided, ensuring no hidden defects after sintering and significantly improving the quality and yield of finished products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a molding die for oxide ceramic products, comprising a base, wherein a die mechanism is mounted on the base and used for molding oxide ceramic products, the die mechanism comprising:

[0007] The lower mold includes a lower mold base fixed to the top of the base. The upper part of the lower mold base has an inner cavity. The lower part of the inner cavity has four circumferentially distributed straight grooves. A slider is slidably installed inside the straight grooves. A shaping plate is fixed to the upper end of the slider. A circular plate is rotatably installed inside the lower part of the lower mold base. The outer edge of the upper part of the circular plate has four circumferentially distributed arc grooves. A cam is rotatably installed at the lower end of the slider, and the cam is located inside the arc groove. A driving component is installed on the lower mold base to drive the circular plate to rotate.

[0008] The upper mold is positioned above the lower mold and is used to compact the filler in the lower mold.

[0009] A demolding assembly, mounted on a base, is used for demolding the product after it has been molded.

[0010] Preferably, the demolding assembly includes a base plate fixed inside the lower end of the base, guide rods are fixed at the four corners of the base plate, and movable seats are longitudinally slidably installed between the guide rods, with a plurality of ejector pins fixed on the top of the movable seats.

[0011] Preferably, the demolding assembly further includes guide frames fixed at both ends of the bottom of the movable seat, the guide frames having guide grooves inside, a slide car being slidably mounted on the upper end of the base plate, guide wheels being rotatably mounted at both ends of the slide car, and the guide wheels being located inside the guide grooves, and a cylinder being mounted at one end of the base for driving the slide car to move.

[0012] Preferably, the driving component includes a worm gear fixed to the outer wall of the lower end of the circular plate, a worm is rotatably mounted on one side inside the lower mold base and meshes with the worm gear for transmission, and a servo motor is mounted on the outer wall of the lower mold base for driving the worm to rotate.

[0013] Preferably, the upper mold includes an upper mold base mounted on the upper end of the lower mold base, and a pressure head is fixed at the bottom of the upper mold base.

[0014] Preferably, the upper mold further includes a positioning head fixed to the bottom of the upper mold base.

[0015] Beneficial effects

[0016] This invention provides a molding die for oxide ceramic products. Compared with the prior art, it has the following advantages:

[0017] 1. After the product is formed and the lower and upper molds are opened, the drive component drives the circular plate to rotate. The circular plate drives the slider to slide along the straight groove through the arc groove and cam. At the same time, the slider drives the shaping plate to move radially away from the formed product. This ensures that when the formed product is ejected from the mold in the later stage, the outer wall surface of the formed product will not come into contact with the inner wall surface of the shaping plate, preventing internal cracks or structural damage. This ensures that the product has no hidden defects after sintering and significantly improves the quality of the finished product.

[0018] 2. After the lower mold and upper mold open and the shaping plate separates from the molded product, the slide is driven to move laterally through the output end of the cylinder. The slide, through the guide wheel and guide groove, drives the movable seat to rise along the guide rod, so that the movable seat drives the ejector pin to push the molded product upward to demold, ensuring a smooth demolding process without impact.

[0019] 3. After the lower mold base and the upper mold base are closed, the filler between the four sliders in the inner cavity is compacted by the pressure head. At the same time, the positioning head is inserted into the gap between the outer wall of the sizing plate and the inner wall of the inner cavity to prevent the sizing plate from shifting under force when the mold is closed, thus ensuring the accuracy of the molding dimensions. Attached Figure Description

[0020] Figure 1 This is a three-dimensional exploded view of the present invention;

[0021] Figure 2 This is a cross-sectional view of the side end of the lower mold in this utility model;

[0022] Figure 3 This is a cross-sectional view of the upper end of the lower mold in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the lower mold base in this utility model;

[0024] Figure 5 This is a schematic diagram of the upper mold in this utility model;

[0025] Figure 6 This is a schematic diagram of the demolding component in this utility model.

[0026] In the diagram: 1. Base; 2. Mold mechanism; 21. Lower mold; 211. Lower mold base; 212. Inner cavity; 213. Straight groove; 214. Slider; 215. Shaping plate; 216. Circular plate; 217. Arc groove; 218. Cam; 219. Driving component; 2191. Worm gear; 2192. Worm; 2193. Servo motor; 22. Upper mold; 221. Upper mold base; 222. Pressure head; 223. Positioning head; 23. Demolding assembly; 231. Base plate; 232. Guide rod; 233. Movable seat; 234. Ejector pin; 235. Guide frame; 236. Guide groove; 237. Slide; 238. Guide wheel; 239. Cylinder. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 - Figure 6 This utility model provides a technical solution: a molding die for oxide ceramic products, including a base 1, on which a mold mechanism 2 is provided for molding oxide ceramic products, the mold mechanism 2 including:

[0029] The lower mold 21 includes a lower mold base 211 fixed to the top of the base 1. The upper end of the lower mold base 211 has an inner cavity 212. The lower end of the inner cavity 212 has four circumferentially distributed straight grooves 213. A slider 214 is slidably installed inside the straight grooves 213. A shaping plate 215 is fixed to the upper end of the slider 214. A circular plate 216 is rotatably installed inside the lower end of the lower mold base 211. The outer edge of the upper end of the circular plate 216 has four circumferentially distributed arc grooves 217. A cam 218 is rotatably installed at the lower end of the slider 214, and the cam 218 is located inside the arc grooves 217. A driving component 219 is installed on the lower mold base 211 and is used to drive the circular plate 216 to rotate.

[0030] The upper mold 22 is positioned above the lower mold 21 and is used to compact the filler in the lower mold 21.

[0031] Demolding component 23 is set on base 1 and used for demolding after product molding.

[0032] In this embodiment, after the product is formed and the lower mold 21 and the upper mold 22 are opened, the circular plate 216 is driven to rotate by the drive component 219. The circular plate 216 drives the slider 214 to slide along the straight groove 213 through the arc groove 217 and the cam 218. At the same time, the slider 214 drives the shaping plate 215 to move radially away from the formed product, so that when the formed product is demolded and ejected in the later stage, the outer wall surface of the formed product will not come into contact with the inner wall surface of the shaping plate 215, preventing internal cracks or structural damage, ensuring that the product has no hidden defects after sintering, and significantly improving the quality of the finished product.

[0033] Specifically, the demolding assembly 23 includes a base plate 231 fixed inside the lower end of the base 1. Guide rods 232 are fixed at the four corners of the base plate 231, and a movable seat 233 is longitudinally slidably installed between the guide rods 232. Several ejector pins 234 are fixed on the top of the movable seat 233. Guide frames 235 are fixed at both ends of the bottom of the movable seat 233. Guide grooves 236 are opened inside the guide frames 235. A slide 237 is slidably installed on the upper end of the base plate 231. Guide wheels 238 are rotatably installed at both ends of the slide 237, and the guide wheels 238 are located inside the guide grooves 236. A cylinder 239 is installed at one end of the base 1 and is used to drive the slide 237 to move.

[0034] In this embodiment, after the lower mold 21 and the upper mold 22 are opened and the shaping plate 215 is separated from the molded product, the slide 237 is driven to move laterally through the output end of the cylinder 239. The slide 237 drives the movable seat 233 to rise along the guide rod 232 through the guide wheel 238 and the guide groove 236, so that the movable seat 233 drives the ejector pin 234 to push the molded product upward to demold.

[0035] Specifically, the driving component 219 includes a worm gear 2191 fixed to the outer wall of the lower end of the circular plate 216, a worm 2192 rotatably mounted on one side inside the lower mold base 211 and meshing with the worm gear 2191 for transmission, and a servo motor 2193 mounted on the outer wall of the lower mold base 211 for driving the worm 2192 to rotate.

[0036] In this embodiment, the output end of the servo motor 2193 drives the worm gear 2192 to cooperate with the worm wheel 2191 to drive the circular plate 216 to rotate.

[0037] Specifically, the upper mold 22 includes an upper mold base 221 installed on the upper end of the lower mold base 211, a pressure head 222 fixed at the bottom of the upper mold base 221, and a positioning head 223 fixed at the bottom of the upper mold base 221.

[0038] In this embodiment, after the lower mold base 211 and the upper mold base 221 are closed, the filler between the four sliders 214 in the inner cavity 212 is compacted by the pressure head 222. At the same time, the positioning head 223 is inserted into the gap between the outer wall of the shaping plate 215 and the inner wall of the inner cavity 212 to avoid the shaping plate 215 from shifting under force when the mold is closed, thus ensuring the accuracy of the molding dimensions.

[0039] The working principle and usage process of this utility model are as follows: First, filler is applied between the four-directional sliders 214 in the inner cavity 212 of the lower mold base 211. After the lower mold base 211 and the upper mold base 221 are closed, the filler between the four-directional sliders 214 in the inner cavity 212 is compacted by the pressure head 222. At the same time, the positioning head 223 is inserted into the gap between the outer wall of the shaping plate 215 and the inner wall of the inner cavity 212 to prevent the shaping plate 215 from shifting under force when the mold is closed, thus ensuring the accuracy of the molding dimensions.

[0040] Once the product is formed and the lower mold 21 and upper mold 22 are opened, the output end of the servo motor 2193 drives the worm gear 2192 in conjunction with the worm wheel 2191 to rotate the circular plate 216. The circular plate 216 drives the slider 214 to slide along the straight groove 213 through the arc groove 217 in conjunction with the cam 218. At the same time, the slider 214 drives the shaping plate 215 to move radially away from the formed product, so that when the formed product is demolded and ejected in the later stage, the outer wall surface of the formed product will not come into contact with the inner wall surface of the shaping plate 215, preventing internal cracks or structural damage, ensuring that the product has no hidden defects after sintering, and significantly improving the quality of the finished product.

[0041] Finally, the slide 237 is driven to move laterally by the output end of the cylinder 239. The slide 237 drives the movable seat 233 to rise along the guide rod 232 through the guide wheel 238 and the guide groove 236. This causes the movable seat 233 to drive the ejector pin 234 to push the molded product upwards and demold it.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming die for oxide ceramic products, comprising a base (1), characterised in that: The base (1) is provided with a mold mechanism (2) for molding oxide ceramic products. The mold mechanism (2) includes: The lower mold (21) includes a lower mold base (211) fixed to the top of the base (1). The upper end of the lower mold base (211) is provided with an inner cavity (212). The lower end of the inner cavity (212) is provided with four circumferentially distributed straight grooves (213). A slider (214) is slidably installed inside the straight grooves (213). A shaping plate (215) is fixed to the upper end of the slider (214). A circular plate (216) is rotatably installed inside the lower end of the lower mold base (211). Four circumferentially distributed arc grooves (217) are provided on the outer edge of the upper end of the circular plate (216). A cam (218) is rotatably installed at the lower end of the slider (214), and the cam (218) is located inside the arc groove (217). A driving component (219) is installed on the lower mold base (211) and is used to drive the circular plate (216) to rotate. The upper mold (22) is set above the lower mold (21) and is used to compact the filler in the lower mold (21); Demolding assembly (23) is set on base (1) and used for demolding after product molding.

2. A forming mold for oxide ceramic products according to claim 1, characterized in that: The demolding assembly (23) includes a base plate (231) fixed inside the lower end of the base (1). Guide rods (232) are fixed at the four corners of the base plate (231), and a movable seat (233) is longitudinally slidably installed between the guide rods (232). Several ejector pins (234) are fixed on the top of the movable seat (233).

3. The molding die for an oxide ceramic product according to claim 2, characterized in that: The demolding assembly (23) also includes guide frames (235) fixed at both ends of the bottom of the movable seat (233). The guide frames (235) have guide grooves (236) inside. A slide (237) is slidably mounted on the upper end of the base plate (231). Guide wheels (238) are rotatably mounted on both ends of the slide (237), and the guide wheels (238) are located inside the guide grooves (236). A cylinder (239) is mounted on one end of the base (1) and is used to drive the slide (237) to move.

4. The molding die for an oxide ceramic product according to claim 1, characterized in that: The driving component (219) includes a worm gear (2191) fixed to the outer wall of the lower end of the circular plate (216), a worm (2192) rotatably mounted on one side of the lower mold base (211) and meshing with the worm gear (2191) for transmission, and a servo motor (2193) mounted on the outer wall of the lower mold base (211) for driving the worm (2192) to rotate.

5. The molding die for an oxide ceramic product according to claim 1, characterized in that: The upper mold (22) includes an upper mold base (221) installed on the upper end of the lower mold base (211), and a pressure head (222) is fixed at the bottom of the upper mold base (221).

6. The molding die for an oxide ceramic product according to claim 5, characterized in that: The upper mold (22) also includes a positioning head (223) fixed to the bottom of the upper mold base (221).

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