Pouring mold with rapid heat dissipation forming structure
By introducing a rapid heat dissipation structure of heat dissipation copper tubes and fins into the casting mold, the problem of uneven cooling of the Roots blower impeller was solved, achieving efficient production and cost reduction.
Patent Information
- Application Number
- CN202422849442.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-21
AI Technical Summary
During the casting process of existing Roots blower impellers, the heat of the molten metal dissipates slowly, resulting in a long cooling time, which easily causes shrinkage holes, looseness and stress concentration. Conventional methods are difficult to achieve uniform heat dissipation, affecting production efficiency and cost.
A casting mold with a rapid heat dissipation molding structure is designed, which includes a mold assembly and a heat dissipation assembly. Heat dissipation copper tubes and heat dissipation fins are installed inside the mold assembly. The circulating cooling system quickly dissipates heat to ensure uniform cooling of the molten metal.
The rapid cooling and forming of the Roots blower impeller is achieved, which shortens the production cycle, reduces installation time and labor costs, and avoids defects such as shrinkage holes, cracks and stress concentration.
Smart Images
Figure CN223394261U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of casting equipment, in particular to a casting mould with a rapid heat dissipation forming structure. Background Art
[0002] A casting mold is a tool used to manufacture parts or products of various shapes and sizes. The impeller of a Roots blower being cast is one of its core components. Currently, during the casting process, the heat dissipated from the molten metal is slow, resulting in a long cooling time. This is because the mold material itself has limited thermal conductivity and lacks channels specifically designed to accelerate heat dissipation. Prolonged cooling can easily cause defects such as shrinkage cavities and looseness inside the impeller. This is due to uneven heat exchange during the solidification of the molten metal, slow solidification in locally overheated areas, and the tendency for gas and impurities to remain. Secondly, due to uneven cooling, the impeller is prone to stress concentration. This is caused by inconsistent thermal stress due to differences in cooling rates in different parts.
[0003] Conventional solutions include extending the natural cooling time, but this significantly reduces production efficiency and increases costs. Another approach is to use fans outside the mold for forced cooling. However, this approach struggles to ensure uniform heat dissipation within the mold, especially in critical areas of the impeller. It can cause the impeller to cool too quickly or too slowly in certain areas, and still fails to effectively address stress concentration and internal defects. Therefore, a new structure is needed to address these technical issues. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention aims to provide a casting mold with a rapid heat dissipation molding structure to solve the problems raised in the above-mentioned background technology.
[0005] The utility model is achieved through the following technical solutions: a casting mold with a rapid heat dissipation molding structure, comprising: a mold assembly and a heat dissipation assembly, the interior of the mold assembly is equipped with a heat dissipation assembly which is the same as the rapid heat dissipation molding of the Roots blower impeller, the mold assembly comprises: a mold shell and a bottom cover, the interior of the mold shell is provided with a casting cavity, the bottom of the mold shell is integrally formed with the bottom cover, the interior of the mold shell is equipped with an impeller cavity column and a shaft cavity column, and three impeller cavity columns are provided, the heat dissipation assembly comprises: a heat dissipation copper tube and a heat dissipation cavity, the interior of the mold shell is equipped with a heat dissipation copper tube, the upper end of the heat dissipation copper tube is a water inlet pipe, and the lower end of the heat dissipation copper tube is a water outlet pipe, a plurality of heat dissipation cavities are evenly opened inside the mold shell, and a plurality of heat dissipation fins with a strip structure are evenly installed on the outer surface of the mold shell.
[0006] As a preferred embodiment, the thickness of the mold shell is greater than the diameter of the heat dissipation copper tube, the mold shell has a three-ring structure, the upper surface of the mold shell is open, and a shaft cavity column is integrally formed at the bottom center position inside the mold shell. The two ends of the shaft cavity column are open, and a shaft cavity is provided inside the shaft cavity column.
[0007] As a preferred embodiment, the bottom of the interior of the mold shell is a triangular ring structure uniformly formed with three impeller cavity columns, both ends of the impeller cavity column are open, and an impeller cavity is provided inside the impeller cavity column, a gap is provided between the impeller cavity column and the inner wall of the mold shell, and a gap is provided between the outer surface of the impeller cavity column and the outer surface of the shaft cavity column. When in use, since the mold shell, bottom cover, shaft cavity column and impeller cavity column are integrally formed, no complicated assembly operation is required during use, and the casting material only needs to be cast into the mold shell, which greatly saves the installation time and labor cost of the mold and improves production efficiency.
[0008] As a preferred embodiment, the corners of the inner wall of the mold shell are set with arc chamfers, and the interior of the mold shell is installed with a heat dissipation copper tube in a serpentine structure. The upper end water inlet pipe of the heat dissipation copper tube is connected to the outlet of the circulating refrigeration equipment, and the lower end water outlet pipe of the heat dissipation copper tube is connected to the inlet of the circulating refrigeration equipment.
[0009] As a preferred embodiment, a plurality of heat dissipation cavities are evenly opened inside the mold shell, and the heat dissipation cavities are arranged between the heat dissipation copper tubes in a serpentine structure. The outer surface of the mold shell is evenly installed with a plurality of heat dissipation fins with the same height as the mold shell. When in use, the heat dissipation component can quickly dissipate the heat in the mold. The rapid heat dissipation helps the molten metal to form a more uniform organizational structure during the solidification process, and reduces defects such as shrinkage holes, cracks, and stress concentration caused by inconsistent cooling speeds.
[0010] As a preferred embodiment, the material of the heat dissipation fins matches the material of the heat dissipation copper tubes, and the number and position of the heat dissipation fins match the number and position of the heat dissipation cavities.
[0011] After adopting the above technical solution, the beneficial effect of the utility model is: by setting a mold assembly, the mold assembly includes: a mold shell and a bottom cover, a casting cavity is provided inside the mold shell, the bottom of the mold shell is integrally formed with a bottom cover, and the inside of the mold shell is installed with an impeller cavity column and a rotating shaft cavity column. When in use, since the mold shell, the bottom cover, the rotating shaft cavity column and the impeller cavity column are integrally formed, there is no need to perform complicated assembly operations during use, and it is only necessary to pour the casting material into the mold shell, which greatly saves the installation time and labor costs of the mold and improves production efficiency.
[0012] By setting up a heat dissipation component, the interior of the mold component is installed with a heat dissipation component that is the same as the heat dissipation component for the rapid heat dissipation and molding of the Roots blower impeller. The heat dissipation component includes: a heat dissipation copper tube and a heat dissipation cavity. The heat dissipation copper tube is installed inside the mold shell, and the outer surface of the mold shell is evenly installed with multiple strip-shaped heat dissipation fins. When in use, the heat dissipation component can quickly dissipate the heat in the mold, so that the Roots blower impeller can be quickly cooled and formed after casting. Compared with traditional molds, the cooling time is greatly reduced, thereby shortening the entire production cycle. At the same time, rapid heat dissipation helps the molten metal to form a more uniform organizational structure during the solidification process, reducing defects such as shrinkage holes, cracks, and stress concentration caused by inconsistent cooling speeds. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0014] Figure 1 This is a schematic diagram of the overall structure of a casting mold with a rapid heat dissipation molding structure of the present invention.
[0015] Figure 2 This is a schematic diagram of the internal structure of a casting mold with a rapid heat dissipation molding structure according to the present invention.
[0016] Figure 3 This is a schematic diagram of the unfolding of the heat dissipation copper tube of a casting mold with a rapid heat dissipation forming structure of the present invention.
[0017] In the figure, 100-mold shell, 110-bottom cover, 111-heat dissipation cavity, 120-impeller cavity column, 130-rotating shaft cavity column, 140-heat dissipation fins;
[0018] 200-heat dissipation copper pipe, 210-water inlet pipe, 220-water outlet pipe. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] See also Figures 1 to 3 The utility model provides a technical solution: a casting mold with a rapid heat dissipation molding structure, comprising: a mold assembly and a heat dissipation assembly, the interior of the mold assembly is equipped with a heat dissipation assembly which is the same as the rapid heat dissipation molding of the Roots blower impeller, the mold assembly comprises: a mold shell 100 and a bottom cover 110, a casting cavity is provided inside the mold shell 100, the bottom of the mold shell 100 is integrally formed with the bottom cover 110, an impeller cavity column 120 and a shaft cavity column 130 are installed inside the mold shell 100, and three impeller cavity columns 120 are provided. The heat dissipation assembly comprises: a heat dissipation copper tube 200 and a heat dissipation cavity 111, a heat dissipation copper tube 200 is installed inside the mold shell 100, the upper end of the heat dissipation copper tube 200 is a water inlet pipe 210, and the lower end of the heat dissipation copper tube 200 is a water outlet pipe 220, a plurality of heat dissipation cavities 111 are evenly opened inside the mold shell 100, and a plurality of heat dissipation fins 140 with a strip-shaped structure are evenly installed on the outer surface of the mold shell 100.
[0021] See also Figures 1 to 3 As a first embodiment of the present invention: the thickness of the mold shell 100 is greater than the diameter of the heat dissipation copper tube 200, the mold shell 100 has a three-ring structure, the upper surface of the mold shell 100 is open, and a shaft cavity column 130 is integrally formed at the bottom center of the mold shell 100. The two ends of the shaft cavity column 130 are open, and a shaft cavity is provided inside the shaft cavity column 130;
[0022] The bottom of the mold shell 100 is a triangular ring structure uniformly formed with three impeller cavity columns 120. The two ends of the impeller cavity column 120 are open, and the impeller cavity column 120 is provided with an impeller cavity inside. A gap is provided between the impeller cavity column 120 and the inner wall of the mold shell 100, and a gap is provided between the outer surface of the impeller cavity column 120 and the outer surface of the shaft cavity column 130.
[0023] The corners of the inner wall of the mold shell 100 are chamfered in an arc shape. A heat dissipation copper tube 200 is installed in a serpentine structure inside the mold shell 100. The water inlet pipe 210 at the upper end of the heat dissipation copper tube 200 is connected to the outlet of the circulating refrigeration equipment, and the water outlet pipe 220 at the lower end of the heat dissipation copper tube 200 is connected to the inlet of the circulating refrigeration equipment.
[0024] When in use, the user first prepares the mold shell 100, then turns the bottom cover 110 of the mold shell 100 downward and the opening of the mold shell 100 upward, and then fixes the mold shell 100 (the fixing structure can be selected according to actual conditions and will not be elaborated here). After the mold shell 100 is fixed, the inner wall of the mold shell 100, the impeller cavity column 120 and the outer surface of the shaft cavity column 130 are coated with a release agent. After the coating is completed, the user can pour the melted Roots blower impeller material to be cast into the interior of the mold shell 100. After the casting is completed, the user waits for a while, and after cooling is completed, the mold shell 100 can be turned upside down and taken out through the above steps. Since the mold shell 100, the bottom cover 110, the shaft cavity column 130 and the impeller cavity column 120 are integrally formed during use, there is no need to perform complicated assembly operations during use. Only the casting material needs to be cast into the mold shell 100, which greatly saves the installation time and labor costs of the mold and improves production efficiency.
[0025] See also Figures 1 to 3 As a second embodiment of the present invention: a plurality of heat dissipation cavities 111 are evenly formed inside the mold shell 100, and the heat dissipation cavities 111 are arranged between the heat dissipation copper tubes 200 in a serpentine structure. A plurality of heat dissipation fins 140 having the same height as the mold shell 100 are evenly installed on the outer surface of the mold shell 100;
[0026] The material of the heat dissipation fins 140 matches the material of the heat dissipation copper tube 200 , and the number and position of the heat dissipation fins 140 match the number and position of the heat dissipation cavity 111 ;
[0027] During use, after the pouring is completed, the user can start the external circulation cooling component to make the circulation cooling component work, and then inject cooling water into the serpentine structure of the heat dissipation copper tube 200 to cool the inner wall of the mold shell 100. At this time, the inside of the mold shell 100 will be cooled due to the flow of circulating water inside the heat dissipation copper tube 200. When the heat dissipation copper tube 200 is cooled by the circulation cooling equipment, the heat dissipation cavity 111 and the heat dissipation fins 140 on the outer surface of the mold shell 100 can be matched with the heat dissipation copper tube 200 to continuously dissipate heat (the circulation cooling equipment is a prior art, and its working principle and structure are not described in detail here). When the heat dissipation copper tube 2 00. When the heat dissipation cavity 111 and the heat dissipation fins 140 are working, the Roots blower impeller cast inside the mold shell 100 will be cooled evenly. After the cooling is completed, the Roots blower impeller can be taken out through the operating steps of the first embodiment. Since the heat dissipation component can quickly dissipate the heat in the mold during use, the Roots blower impeller can be quickly cooled and formed after casting. Compared with traditional molds, the cooling time is greatly reduced, thereby shortening the entire production cycle. At the same time, rapid heat dissipation helps the molten metal to form a more uniform organizational structure during the solidification process, reducing defects such as shrinkage holes, cracks, and stress concentration caused by inconsistent cooling speeds.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A casting mold with a rapid heat dissipation molding structure, comprising: A mold assembly and a heat dissipation assembly, characterized in that a heat dissipation assembly similar to that for rapidly dissipating heat from a Roots blower impeller is installed inside the mold assembly, and the mold assembly comprises: a mold shell (100) and a bottom cover (110); A casting cavity is provided inside the mold shell (100), a bottom cover (110) is integrally formed at the bottom of the mold shell (100), an impeller cavity column (120) and a rotating shaft cavity column (130) are installed inside the mold shell (100), three impeller cavity columns (120) are provided, and the heat dissipation component includes: a heat dissipation copper tube (200) and a heat dissipation cavity (111); A heat dissipation copper tube (200) is installed inside the mold shell (100), the upper end of the heat dissipation copper tube (200) is a water inlet pipe (210), and the lower end of the heat dissipation copper tube (200) is a water outlet pipe (220). A plurality of heat dissipation cavities (111) are evenly opened inside the mold shell (100), and a plurality of heat dissipation fins (140) in a strip-shaped structure are evenly installed on the outer surface of the mold shell (100).
2. The casting mold with a rapid heat dissipation molding structure according to claim 1, characterized in that: The thickness of the mold shell (100) is greater than the diameter of the heat dissipation copper tube (200), the mold shell (100) is a three-ring structure, the upper surface of the mold shell (100) is designed to be open, and a rotating shaft cavity column (130) is integrally formed at the bottom center position inside the mold shell (100), the two ends of the rotating shaft cavity column (130) are designed to be open, and a rotating shaft cavity is provided inside the rotating shaft cavity column (130).
3. The casting mold with a rapid heat dissipation molding structure according to claim 2, characterized in that: The bottom of the interior of the mold shell (100) is in a triangular ring structure and is evenly integrated with three impeller cavity columns (120). Both ends of the impeller cavity column (120) are designed to be open, and an impeller cavity is provided inside the impeller cavity column (120). A gap is provided between the impeller cavity column (120) and the inner wall of the mold shell (100), and a gap is provided between the outer surface of the impeller cavity column (120) and the outer surface of the shaft cavity column (130).
4. The casting mold with a rapid heat dissipation molding structure according to claim 3, characterized in that: The corners of the inner wall of the mold shell (100) are arranged in a circular arc chamfered shape. A heat dissipation copper tube (200) is installed in a serpentine structure inside the mold shell (100). The upper end water inlet pipe (210) of the heat dissipation copper tube (200) is connected to the outlet of the circulating refrigeration equipment, and the lower end water outlet pipe (220) of the heat dissipation copper tube (200) is connected to the inlet of the circulating refrigeration equipment.
5. The casting mold with a rapid heat dissipation molding structure according to claim 4, characterized in that: The mold shell (100) is evenly provided with a plurality of heat dissipation cavities (111), the heat dissipation cavities (111) being arranged between the heat dissipation copper tubes (200) in a serpentine structure, and the outer surface of the mold shell (100) is evenly provided with a plurality of heat dissipation fins (140) having the same height as the mold shell (100).
6. The casting mold with a rapid heat dissipation molding structure according to claim 5, characterized in that: The material of the heat dissipation fins (140) matches the material of the heat dissipation copper tube (200), and the number and position of the heat dissipation fins (140) match the number and position of the heat dissipation cavity (111).