Pouring mold for forming complex casting inner cavity by combining waterproof ceramic core and water-soluble core
Through the casting mold combining a waterproof ceramic core and a water-soluble core, the problem of difficulty in creating complex inner cavity in traditional molds is solved, and precise molding and cost reduction of castings are achieved.
Patent Information
- Application Number
- CN202422177290.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-05
AI Technical Summary
Traditional casting cavity casting molds are difficult to accurately manufacture complex cavity structures, and the mold release process is difficult, which increases production time and cost.
The waterproof ceramic core and water-soluble core are combined to form a lower cavity around the bottom cavity of the lower mold through multiple modules, and the mold alignment and mold clamping is achieved using limit jacks and positioning pins. Combined with the casting and module removal process, ensuring that the core material is easy to be removed after the casting is molded.
The precise molding of complex castings is achieved, which reduces production costs and difficulties and improves production efficiency.
Smart Images
Figure CN223145926U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core. Background Technique
[0002] Casting molds for casting inner cavities are usually used to form the internal cavities or complex shapes of castings during the metal casting process. This technology is very common in industries such as automotive, aerospace, and mechanical manufacturing. A casting mold is a tool used to produce castings, which determines the final shape and size of the castings. Commonly used mold materials include metals (such as cast iron, steel), sand molds, ceramics, etc.
[0003] Currently, traditional casting molds for casting inner cavities mainly consist of an upper mold and a lower mold. The external contour and internal cavity of the casting are formed by the closing of these two parts. Molten metal enters the mold through the gate and fills the space between the inner and outer cavities. After cooling and solidifying, the casting is formed. When the casting requires a complex inner cavity structure, such as deep holes, slender channels, or curved channels, it is very difficult to precisely manufacture only relying on the upper mold and the lower mold. For castings with complex inner cavities, the demolding process may be very difficult, and sometimes even impossible, because the mold cannot be separated from the casting without damaging the casting. For some complex inner cavity structures, multiple pourings or additional processing steps may be required, which will increase the production time and cost. Content of the Utility Model
[0004] To achieve the above object, the utility model provides the following technical solution: A casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core, including an upper mold and a lower mold. A runner is formed between the upper mold and the lower mold, and two limiting jacks are provided on each of the opposite sides of the upper mold and the lower mold. A bottom cavity is formed at the top of the lower mold, and a water-soluble core is placed in the bottom cavity. Multiple modules adapted to the upper mold are placed, and a lower cavity is formed by the multiple modules surrounding the water-soluble core. A ceramic core sleeved with the water-soluble core is supported between the multiple modules, and a bottom ring sleeved with the water-soluble core is placed in the bottom cavity;
[0005] An upper cavity adapted to the lower cavity is formed at the bottom of the upper mold, and a mold core extending into the ceramic core is penetrated.
[0006] Further, the multiple modules are divided into mold A, mold B, module three, mold D, and module four, and form a lower cavity around the water-soluble core.
[0007] Further, a top die cavity adapted to Die A is formed at the bottom of the top die. Die A includes a bump placed on the bottom die, two side blocks, Module 1 and a forming ring placed between Module 1 and the side blocks, with the side edges of the two side blocks each forming a convex edge that abuts against Module 1. One side of Module 1 forms a column die that penetrates through the two side blocks and is inserted into one end of the ceramic core.
[0008] Further, Die B is divided into upper and lower layers. The lower layer is Module 2 placed on the bottom die, and the upper layer is Top Die 2 placed on Module 2. One side of Module 2 abuts against the bump in a mating manner, and the same side of Module 2 and Top Die 2 both abut against one side of Module 3 in a mating manner.
[0009] Further, Die D is also divided into upper and lower layers. The lower layer is Module 5 placed on the bottom die, and the upper layer is Top Die 5 placed on Module 5. The same side of Module 5 and Top Die 5 both abut against Module 3 in a mating manner, and the other same side both abut against Module 4 in a mating manner.
[0010] Further, card slots are formed between the top of Top Die 5 and Module 3, between Module 2 and Top Die 2, and between Module 4 and Module 5 and Top Die 5, and positioning blocks are placed in the card slots. Limit slots opposite to and equal in number to the positioning blocks are formed at the bottom of the top die.
[0011] Compared with the prior art, the technical solution of the present application has the following beneficial effects:
[0012] The casting mold formed by combining a waterproof ceramic core and a water-soluble core to form a complex casting inner cavity forms a lower cavity around the bottom cavity of the bottom die through the combination of multiple modules, while surrounding the water-soluble core and supporting the ceramic core. By inserting a positioning pin into the limit jack, the top die and the bottom die can be aligned and closed. When closing the die, the positioning block will also extend into the limit slot, which can position multiple modules and prevent misalignment during casting. And after casting is completed, the modules can be removed in sequence, facilitating the removal of the product. By soaking in water and vibrating the shell, the water-soluble core and ceramic core in the product can be removed. Therefore, using the combination of a ceramic core and a water-soluble core to form a complex inner cavity can not only produce qualified castings but also reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the present utility model;
[0014] Figure 2 is a three-dimensional view of the bottom die in the present utility model;
[0015] Figure 3 is a three-dimensional view of the top die in the present utility model;
[0016] Figure 4This is a three-dimensional view of the connection structure between the upper and lower molds of the present utility model;
[0017] Figure 5 This is the present utility model Figure 4 A three-dimensional view of adding a water-soluble core to it;
[0018] Figure 6 This is the present utility model Figure 4 A three-dimensional view of adding a ceramic core to it.
[0019] In the figure: 1. Upper mold; 2. Lower mold; 3. Runner; 4. Limit jack; 5. Mold core; 6. Upper mold cavity; 7. Limit groove; 8. Upper cavity; 9. Module 1; 10. Side block; 11. Protrusion; 12. Column mold; 13. Module 2; 14. Second upper mold; 15. Module 3; 17. Module 4; 18. Module 5; 19. Fifth upper mold; 20. Positioning block; 21. Bottom cavity; 22. Water-soluble core; 23. Ceramic core; 24. Forming ring; 25. Bottom ring. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figures 1-6 , in the pouring mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core in this embodiment, it includes an upper mold 1 and a lower mold 2. A runner 3 is formed between the right sides of the upper mold 1 and the lower mold 2, and two limit jacks 4 are opened at both opposite corners of the upper mold 1 and the lower mold 2. A positioning pin can be inserted into the limit jack 4. A bottom cavity 21 is formed at the top of the lower mold 2, a water-soluble core 22 is placed in the bottom cavity 21, and a plurality of modules adapted to the upper mold 1 are placed. The plurality of modules surround the water-soluble core 22 to form a lower cavity, and the cooperation between the plurality of modules and the inner wall of the lower mold 2 makes the shape of the lower cavity in a figure-eight shape. A ceramic core 23 sleeved on the top of the water-soluble core 22 is supported between the plurality of modules. One end of the ceramic core 23 extends into one of the modules, and a bottom ring 25 sleeved on the water-soluble core 22 is placed in the bottom cavity 21; an upper cavity 8 adapted to the lower cavity is formed at the bottom of the upper mold 1, and a mold core 5 extending into the ceramic core 23 is penetrated.
[0022] In the above structure, a plurality of modules are placed in appropriate positions around the bottom hole to form a lower cavity, and then the bottom ring and the water-soluble core are placed therein, and then supported by the module and plugged into the top of the water-soluble core. When the mold is closed, the positioning pin can be inserted into the limit hole so that the upper mold and the lower mold can be aligned for mold closing, and then inserted through the mold core and extended into the ceramic core, and poured through the runner. With the cooperation of the water-soluble core and the module, the product shell can be formed. At the same time, with the cooperation of the ceramic core and the mold core, the internal channel of the product can be connected, so that qualified castings with complex inner cavities can be produced, and at the same time, it is convenient to remove the modules one by one without damaging the casting to complete the operation of removing the casting. After removal, the ceramic core and the water-soluble core are removed by immersion in water and vibration of the shell, thereby reducing production costs.
[0023] like Figures 4-6 In the direction shown, the multiple modules are divided into mold A, mold B, module three 15, mold D and module four 17, and mold A, mold B, module three 15, mold D and module four 17 form a lower cavity around the water-soluble core 22, and the bottom of the upper mold 1 is provided with an upper mold groove 6 adapted to mold A, and the mold A includes a protrusion 11 placed on the lower mold 2, the protrusion 11 is in contact with mold B, and two side blocks 10 placed in the lower mold 2 and extending into the upper mold groove 6, module one 9 and a molding ring 24 located between module one 9 and the side block 10, the left sides of the two side blocks 10 are formed with convex edges in contact with the right side of module one 9, and module one 9 forms a gap between module one 9 and the two side blocks 10 through the convex edge, and the molding ring 24 is located in the gap and in contact with module one 9, and the right side of the module one 9 is formed with a column mold 12 that penetrates the two side blocks 10 and is plugged into one end of the ceramic core 23. A lower cavity is formed by the cooperation between the convex block and mold B, module three 15, mold D and module four 17 and the inner wall of the lower mold, a gap is formed between the module one and the side block, and a specified shape can be formed by the cooperation of the upper mold groove of the shaping block, and it extends into the ceramic core through the column mold, so that the inner cavity of the cast product is not blocked, and the product can be easily taken out by removing mold A one by one.
[0024] Among them, the mold B is divided into upper and lower layers. The lower layer is the module two 13 placed on the lower mold 2 and fitting closely with the bump 11. The upper layer is the upper mold two 14 placed on the module two 13 and fitting with it. The same side of the module two 13 and the upper mold two 14 are both in close contact with one side of the module three 15. The mold D is also divided into upper and lower layers. The lower layer is the module five 18 placed on the lower mold 2, and the upper layer is the upper mold five 19 placed on the module five 18 and fitting with it. The same side of the module five 18 and the upper mold five 19 are both in close contact with the module three 15, and the other same side is both in close contact with the module four 17. The bump, the module two, the module three, the module five, and the module four surround the outer periphery of the bottom cavity and also surround the outer periphery of the water-soluble core at the same time, thereby forming the lower shell of the product. Then, the upper mold two, the module three, the upper mold five, and the module four also surround the outer periphery of the water-soluble core and support the ceramic core, thereby cooperating with the ceramic core to form the upper shell of the product. At the same time, they can be removed one by one, making it convenient to take out the product.
[0025] Such as Figure 3 and 4 , a clamping groove is provided at the top of the upper mold five 19 and the module three 15, between the module two 13 and the upper mold two 14, and between the module four 17 and the module five 18 and the upper mold five 19. A positioning block 20 is placed in the clamping groove. The length of the right positioning block 20 is greater than the lengths of the other three positioning blocks 20. The positioning block 20 is L-shaped. A limiting groove 7 opposite to and having the same number as the positioning block 20 is provided at the bottom of the upper mold 1. The top end of the positioning block 20 can extend into the limiting groove 7. When multiple modules are placed in the appropriate positions, then the positioning blocks are sequentially placed into the designated limiting grooves. Then, when the upper mold is closed, the positioning blocks will extend into the limiting grooves, positioning the upper mold and the lower mold. Therefore, the limiting groove can also limit the positioning block, preventing the module from moving out during pouring and causing the shape of the casting to deform.
[0026] The working principle of the above embodiment is as follows:
[0027] By placing Module 1, edge block, convex block, Module 2, upper die 2, Module 3, Module 4, Module 5, and upper die 5 in sequence at the designated positions of the lower die, then placing the water-soluble core into the bottom cavity, and forming the bottom of the product by cooperating with the bottom ring, then inserting the ceramic core into the top of the water-soluble core and extending it through the edge block to be inserted into the column mold. There is a gap between Module 1 and the edge block, and by cooperating with the forming ring, one end of the product can be formed. Under the action of the column mold insertion and the ceramic core, a runner can be formed inside the product, and the column mold can prevent the runner from being blocked and closed. Then place the positioning block into the card slot, and at the same time insert the positioning pin into the limit jack of the lower die. Then, by aligning the limit jack of the upper die with the positioning pin and inserting the positioning pin into the limit jack, the upper die and the lower die are aligned and closed. At the same time, the positioning block extends into the limit slot to limit multiple modules. Then, pouring is completed through the runner. After pouring is completed, separate the upper die. Then, remove the modules in sequence to obtain a complete product. Then, immerse the wax mold in water to dissolve the water-soluble wax and remove the wax. Bake the mold shell, cast, cool, remove the mold shell to form a casting, and remove the waterproof ceramic core of the casting by vibrating the shell. Using the combination of the ceramic core and the water-soluble core to form a complex inner cavity can not only produce qualified castings but also reduce the manufacturing cost.
[0028] The entire workflow is completed, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.
[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core, comprising an upper mold (1) and a lower mold (2). A runner (3) is formed between the upper mold (1) and the lower mold (2), and two limit jacks (4) are provided on each of the opposite sides of the upper mold (1) and the lower mold (2). It is characterized in that: The top of the lower mold (2) is formed with a bottom cavity (21), and a water-soluble core (22) is placed in the bottom cavity (21), and a plurality of modules adapted to the upper mold (1) are placed, the plurality of modules surround the water-soluble core (22) to form a lower cavity, a ceramic core (23) sleeved with the water-soluble core (22) is supported between the plurality of modules, and a bottom ring (25) sleeved with the water-soluble core (22) is placed in the bottom cavity (21); The bottom of the upper mold (1) is formed with an upper cavity (8) adapted to the lower cavity, and a mold core (5) extending into the ceramic core (23).
2. The casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core according to claim 1, characterized in that: The plurality of modules are divided into module A, module B, module three (15), module D and module four (17), and form a lower cavity around the water-soluble core (22).
3. The casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core according to claim 2, wherein: The bottom of the upper mold (1) is provided with an upper mold groove (6) adapted to the mold A. The mold A comprises a convex block (11) placed on the lower mold (2), and two side blocks (10) extending into the upper mold groove (6), a module one (9), and a molding ring (24) located between the module one (9) and the side block (10). The sides of the two side blocks (10) are both formed with convex edges that are in contact with the module one (9). One side of the module one (9) is formed with a column mold (12) that penetrates the two side blocks (10) and is plugged into one end of the ceramic core (23).
4. The casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core according to claim 3, characterized in that: The mold B is divided into two layers, the lower layer is the module two (13) placed on the lower mold (2), and the upper layer is the upper mold two (14) placed on the module two (13), one side of the module two (13) is in close contact with the protrusion (11), and the same side of the module two (13) and the upper mold two (14) is in close contact with one side of the module three (15).
5. The casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core according to claim 4, characterized in that: The mold D is also divided into an upper and lower layer, and the lower layer is the module five (18) placed on the lower mold (2), and the upper layer is the upper mold five (19) placed on the module five (18). The same side of the module five (18) and the upper mold five (19) are both in contact with the module three (15), and the other same side is both in contact with the module four (17).
6. The casting mold for forming a complex casting inner cavity by combining a waterproof ceramic core and a water-soluble core according to claim 5, characterized in that: A card slot is provided between the upper mold 5 (19) and the top of the module 3 (15), between the module 2 (13) and the upper mold 2 (14), and between the module 4 (17), the module 5 (18) and the upper mold 5 (19), and a positioning block (20) is placed in the card slot. The bottom of the upper mold (1) is provided with a limiting groove (7) opposite to the positioning block (20) and with the same number.