Dry pressing forming equipment

Abstract

The utility model discloses dry-pressing forming equipment, which relates to the field of dry-pressing forming processing and comprises a rack, a hydraulic cylinder is fixedly mounted at the upper end in the rack, an upper pressing plate is fixedly mounted at a telescopic rod of the hydraulic cylinder, a lower pressing plate is fixedly mounted in the rack, and the upper pressing plate and the lower pressing plate are symmetrically arranged up and down; heat conducting plates are arranged in the middles of the upper pressing plate and the lower pressing plate, heating devices and cooling devices are fixedly mounted in the upper pressing plate and the lower pressing plate, and the heating devices, the cooling devices and the heat conducting plates are in mutual heat transfer connection; a first elastic piece is installed between the upper pressing plate and the heat conduction plate in an abutting mode, and a second elastic piece is installed between the lower pressing plate and the heat conduction plate in an abutting mode. Compared with the prior art, heating and heat preservation can be carried out when the mold is closed, rapid production and forming of a product are achieved, the product does not need to be put into a heating furnace for shaping for the second time, and the product quality and the production efficiency are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of dry pressing and forming, and in particular to a dry pressing and forming equipment. Background Technology

[0002] Dry pressing is a commonly used method for forming green bodies in ceramic production. Powder is granulated with a small amount of binder, then placed into a mold and pressed on a press. This forces the powder particles to come close together within the mold and bond firmly together through internal friction, forming a green body of a specific shape.

[0003] Commercially available dry pressing equipment typically uses molds for mold closing and pressure holding, allowing materials to bond firmly through internal friction. After mold opening, a pre-shaped product is obtained. These products then need to be placed in a heating furnace for heating to achieve full shaping. However, because the pre-shaped products have low hardness, they are easily damaged during handling, leading to reduced product quality and low production efficiency.

[0004] Therefore, it is necessary to install a heating and heat preservation device in the dry pressing mold so that the product can be heated and cured after the mold is closed and shaped, avoiding secondary re-furnace operation and ensuring the production quality of the product. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0006] A dry pressing molding equipment includes a frame, a hydraulic cylinder is fixedly installed at the upper end of the frame, an upper pressure plate is fixedly installed at the telescopic rod of the hydraulic cylinder, and a lower pressure plate is fixedly installed inside the frame. The upper pressure plate and the lower pressure plate are arranged symmetrically above and below each other.

[0007] A heat-conducting plate is provided in the middle of both the upper and lower pressure plates. A heating device and a cooling device are fixedly installed inside both the upper and lower pressure plates. The heating device, the cooling device and the heat-conducting plate are connected to each other for heat transfer.

[0008] A first elastic element is installed between the upper pressure plate and the heat-conducting plate, and a second elastic element is installed between the lower pressure plate and the heat-conducting plate.

[0009] Furthermore: a protrusion is formed in the middle of the bottom side of the upper pressure plate, and a first groove is formed in the protrusion. The heat-conducting plate of the upper pressure plate is fitted into the first groove with a clearance fit. The first elastic element is abutted between the first groove and the heat-conducting plate. An upper mold is detachably installed on the lower side of the upper pressure plate. A groove is formed in the middle of the upper side of the upper mold. The protrusion is fitted into the groove with a clearance fit. The heat-conducting plate abuts in the groove to transfer heat.

[0010] Furthermore: a second groove is formed in the middle of the top side of the lower pressure plate, the heat-conducting plate of the lower pressure plate is fitted into the second groove with a gap fit, the second elastic element is abutted between the second groove and the heat-conducting plate, a lower mold is detachably installed on the lower pressure plate, a cavity is formed in the middle of the upper side of the lower mold, the heat-conducting plate abuts against the bottom side of the lower mold for heat transfer, a core is formed in the lower side of the upper mold, and the core is fitted into the cavity with a gap fit.

[0011] Furthermore: the distance between the core surface and the slot is equal to the distance between the bottom side of the lower mold and the cavity.

[0012] Furthermore: the four ends of the lower side of the upper pressure plate are each formed with a first T-shaped mounting groove, and the four ends of the outer side of the upper mold are each formed with a first U-shaped edge. The first U-shaped edges are fixedly installed in the first T-shaped mounting grooves by screws.

[0013] Furthermore: the four ends of the upper side of the lower pressure plate are each formed with a second T-shaped mounting groove, and the four ends of the outer side of the lower mold are each formed with a second U-shaped edge. The second U-shaped edges are fixedly installed in the second T-shaped mounting grooves by screws.

[0014] Furthermore: the cooling device includes a cooling water pump, a water tank, cooling water pipes and coolant. The cooling water pipes are made of thermally conductive metal, bent into an S-shaped structure and fixedly installed on the inner side of the heat-conducting plate. The two ends of the cooling water pipes are respectively connected to the water tank as inlet and outlet. The coolant is stored in the water tank. The cooling water pump is connected between the inlet of the cooling water pipes and the water tank.

[0015] Furthermore: the heating device uses a heating wire, which is wound and installed on the outside of the cooling water pipe, and epoxy thermally conductive adhesive is filled between the cooling water pipe and the heat-conducting plate.

[0016] Furthermore, the outer side of the cooling water pipe is integrally formed with a threaded edge, and epoxy thermally conductive adhesive is filled between the cooling water pipe, the threaded edge, and the heat-conducting plate.

[0017] Furthermore: the heating wire is wound and installed on the threaded side of the cooling water pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: An upper mold and a lower mold are installed on the upper and lower pressure plates respectively. The upper and lower molds are pressed onto the heat-conducting plate by the first and second elastic elements respectively. Since the heating and cooling devices are connected to the heat-conducting plate for heat transfer, the material between the upper and lower molds can be heated and kept warm by the heating device during mold closing, while pressure is maintained by the hydraulic cylinder, achieving rapid material shaping in the mold. Before mold opening, the heating device is turned off and the cooling device is turned on. The cooling energy of the cooling device allows the heat-conducting plate to cool down quickly, thereby removing the heat from the upper and lower molds and achieving rapid cooling of the material after shaping. Finally, the mold opening action between the upper and lower molds is achieved by the hydraulic cylinder rising, realizing rapid product production and forming without the need for secondary heating in a furnace for shaping, thus ensuring product quality.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural diagram of the upper and lower pressure plates;

[0023] Figure 3 yes Figure 2 A structural diagram from another perspective;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the upper and lower pressure plates;

[0025] Figure 5 yes Figure 4 A structural diagram from another perspective;

[0026] Figure 6 yes Figure 5 A magnified structural diagram at point A.

[0027] The figure shows: 1. Frame; 2. Hydraulic cylinder; 3. Upper pressure plate; 4. Lower pressure plate; 5. Heat-conducting plate; 6. Heating device; 7. Cooling device; 71. Cooling water pump; 72. Water tank; 73. Cooling water pipe; 8. First elastic element; 9. Second elastic element; 10. Protrusion; 11. First groove; 12. Upper mold; 13. Slot; 14. Second groove; 15. Lower mold; 16. Cavity; 17. Core; 18. Threaded edge; 19. First T-shaped mounting groove; 20. First U-shaped edge; 21. Second T-shaped mounting groove; 22. Second U-shaped edge. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] like Figure 1-6As shown, a dry pressing molding equipment of the present invention includes a frame 1, a hydraulic cylinder 2 is fixedly installed at the upper end of the frame 1, an upper pressure plate 3 is fixedly installed at the telescopic rod of the hydraulic cylinder 2, and a lower pressure plate 4 is fixedly installed inside the frame 1. The upper pressure plate 3 and the lower pressure plate 4 are symmetrically arranged above and below each other.

[0034] A heat-conducting plate 5 is provided in the middle of the upper pressure plate 3 and the lower pressure plate 4. A heating device 6 and a cooling device 7 are fixedly installed in the upper pressure plate 3 and the lower pressure plate 4. The heating device 6, the cooling device 7 and the heat-conducting plate 5 are connected to each other for heat transfer.

[0035] A first elastic element 8 is abutted between the upper pressure plate 3 and the heat-conducting plate 5, and a second elastic element 9 is abutted between the lower pressure plate 4 and the heat-conducting plate 5.

[0036] The principle is as follows: an upper mold 12 and a lower mold 15 are installed on the upper pressure plate 3 and the lower pressure plate 4, respectively. The upper mold 12 and the lower mold 15 are pressed onto the heat-conducting plate 5 through the first elastic element 8 and the second elastic element 9, respectively. Since the heating device 6 and the cooling device 7 are connected to the heat-conducting plate 5 for heat transfer, the material between the upper mold 12 and the lower mold 15 can be heated and kept warm by the heating device 6 when the mold is closed. At the same time, the hydraulic cylinder 2 is used to maintain pressure, so as to realize the rapid shaping of the material in the mold. Before the mold is opened, the heating device 6 is turned off and the cooling device 7 is turned on. The cooling energy of the cooling device 7 can make the heat-conducting plate 5 cool down quickly, thereby removing the heat from the upper mold 12 and the lower mold 15, realizing the rapid cooling of the material after shaping. Finally, the upper mold 12 and the lower mold 15 are opened by the hydraulic cylinder 2 rising, so as to realize the rapid production and molding of the product without the need to put it into the heating furnace for shaping again, thus ensuring product quality.

[0037] Furthermore: A protrusion 10 is formed in the middle of the bottom side of the upper pressure plate 3, and a first groove 11 is formed in the protrusion 10. The heat-conducting plate 5 of the upper pressure plate 3 is fitted into the first groove 11 with a clearance fit. The first elastic member 8 is abutted between the first groove 11 and the heat-conducting plate 5. An upper mold 12 is detachably installed on the lower side of the upper pressure plate 3. A groove 13 is formed in the middle of the upper side of the upper mold 12. The protrusion 10 is fitted into the groove 13 with a clearance fit. The heat-conducting plate 5 abuts in the groove 13 to transfer heat. The protrusion 10 and the groove 13 cooperate to assemble and achieve precise positioning of the upper mold 12. The first groove 11 is set on the protrusion 10 so that the heat-conducting plate 5 can fit into the groove 13 of the upper mold 12 to achieve efficient heat transfer and ensure rapid heating and heat preservation and cooling discharge of the material.

[0038] Furthermore: a second groove 14 is formed in the middle of the top side of the lower pressure plate 4, and the heat-conducting plate 5 of the lower pressure plate 4 is fitted into the second groove 14 with a gap fit. The second elastic member 9 is abutted between the second groove 14 and the heat-conducting plate 5. A lower mold 15 is detachably installed on the lower pressure plate 4. A cavity 16 is formed in the middle of the upper side of the lower mold 15. The heat-conducting plate 5 abuts against the bottom side of the lower mold 15 for heat transfer. A core 17 is formed on the lower side of the upper mold 12. The core 17 is fitted into the cavity 16 with a gap fit. The heat-conducting plate 5 can sink into the second groove 14 and abut against the bottom side of the lower mold 15 through the second elastic member 9 for heat transfer, thereby realizing the rapid heating and cooling of the lower mold 15.

[0039] Furthermore: the distance between the surface of the core 17 and the groove 13 is equal to the distance between the bottom side of the lower mold 15 and the cavity 16; by setting the same distance, the upper mold 12 and the lower mold 15 can achieve the same heat transfer effect, realize the overall balanced heating and cooling of the mold, and ensure the product shaping quality.

[0040] Furthermore: the upper pressure plate 3 has four ends formed with first T-shaped mounting grooves 19 on its lower side, and the upper mold 12 has four ends formed with first U-shaped edges 20 on its outer side. The first U-shaped edges 20 are fixedly installed in the first T-shaped mounting grooves 19 by screws. This makes the installation of the upper mold 12 on the upper pressure plate 3 more stable and also facilitates quick disassembly and replacement.

[0041] Furthermore, the lower pressure plate 4 has four ends formed with second T-shaped mounting grooves 21, and the lower mold 15 has four ends formed with second U-shaped edges 22. The second U-shaped edges 22 are fixedly installed in the second T-shaped mounting grooves 21 by screws. This makes the installation of the lower mold 15 on the lower pressure plate 4 more stable and also facilitates quick disassembly and replacement.

[0042] Furthermore, the cooling device 7 includes a cooling water pump 71, a water tank 72, a cooling water pipe 73, and coolant. The cooling water pipe 73 is made of thermally conductive metal, bent into an S-shape, and fixedly installed on the inner side of the heat-conducting plate 5. The two ends of the cooling water pipe 73 are respectively connected to the water tank 72 as inlet and outlet. The coolant is stored in the water tank 72. The cooling water pump 71 is connected between the inlet of the cooling water pipe 73 and the water tank 72 to realize the circulation of coolant. When the cooling water pump 71 is turned on, it can quickly remove the heat from the heat-conducting plate 5, realizing rapid cooling after the material is shaped.

[0043] Furthermore: the heating device 6 uses a heating wire, which is wound and installed on the outside of the cooling water pipe 73, and epoxy thermally conductive adhesive is filled between the cooling water pipe 73 and the heat-conducting plate 5; the heating wire can be used to achieve rapid heating of the cooling water pipe 73, and rapid heating and heat preservation of the heat-conducting plate 5.

[0044] Furthermore, the outer side of the cooling water pipe 73 is integrally formed with a threaded edge 18, and epoxy thermally conductive adhesive is filled between the cooling water pipe 73, the threaded edge 18 and the heat-conducting plate 5; this can increase the contact area between the cooling water pipe 73 and the heat-conducting plate 5, and achieve more efficient heat transfer.

[0045] Furthermore, the heating wire is wound and installed on the threaded edge 18 of the cooling water pipe 73, making the installation of the heating wire more stable and enabling it to heat and keep the cooling water pipe 73 evenly.

[0046] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A dry pressing molding device, comprising a frame, wherein a hydraulic cylinder is fixedly installed at the upper end of the frame, an upper pressure plate is fixedly installed at the telescopic rod of the hydraulic cylinder, and a lower pressure plate is fixedly installed inside the frame, the upper and lower pressure plates being symmetrically arranged vertically relative to each other; characterized in that: A heat-conducting plate is provided in the middle of both the upper and lower pressure plates. A heating device and a cooling device are fixedly installed inside both the upper and lower pressure plates. The heating device, the cooling device and the heat-conducting plate are connected to each other for heat transfer. A first elastic element is installed between the upper pressure plate and the heat-conducting plate, and a second elastic element is installed between the lower pressure plate and the heat-conducting plate.

2. The dry pressing equipment according to claim 1, characterized in that: A protrusion is formed in the middle of the bottom side of the upper pressure plate, and a first groove is formed in the protrusion. The heat-conducting plate of the upper pressure plate is fitted into the first groove with a clearance fit. A first elastic element is abutted between the first groove and the heat-conducting plate. An upper mold is detachably installed on the lower side of the upper pressure plate. A groove is formed in the middle of the upper side of the upper mold. The protrusion is fitted into the groove with a clearance fit. The heat-conducting plate abuts against the groove to transfer heat.

3. The dry pressing equipment according to claim 2, characterized in that: The lower pressure plate has a second groove formed in the middle of its top side. The heat-conducting plate of the lower pressure plate is fitted into the second groove with a gap fit. The second elastic element is abutted between the second groove and the heat-conducting plate. A lower mold is detachably installed on the lower pressure plate. A cavity is formed in the middle of the upper side of the lower mold. The heat-conducting plate abuts against the bottom side of the lower mold for heat transfer. A core is formed on the lower side of the upper mold. The core is pressed into the cavity with a gap fit.

4. The dry pressing equipment according to claim 3, characterized in that: The distance between the core surface and the slot is equal to the distance between the bottom side of the lower mold and the cavity.

5. The dry pressing equipment according to claim 1, characterized in that: The cooling device includes a cooling water pump, a water tank, cooling water pipes, and coolant. The cooling water pipes are made of thermally conductive metal, bent into an S-shape, and fixedly installed on the inner side of the heat-conducting plate. The two ends of the cooling water pipes are respectively connected to the water tank as inlet and outlet. The coolant is stored in the water tank, and the cooling water pump is connected between the inlet of the cooling water pipes and the water tank.

6. The dry pressing equipment according to claim 5, characterized in that: The heating device uses a heating wire, which is wound and installed on the outside of the cooling water pipe. Epoxy thermally conductive adhesive is filled between the cooling water pipe and the heat-conducting plate.

7. The dry pressing equipment according to claim 6, characterized in that: The outer side of the cooling water pipe is integrally formed with a threaded edge, and epoxy thermally conductive adhesive is filled between the cooling water pipe, the threaded edge, and the heat-conducting plate.

Images