A water channel structure for water-cooled molds used in low-pressure casting

Abstract

The present invention discloses a water channel structure for a water-cooled mold for low-pressure casting, comprising a cover plate and a main body, wherein the cover plate is an annular body, and a plurality of inverted triangular or inverted trapezoidal arc blocks extending downward are formed on its bottom surface, and the main body is a cylindrical component or an annular sleeve, and a plurality of inverted triangular or inverted trapezoidal arc grooves extending downward are formed on its top surface, and the arc blocks are inserted into the corresponding arc grooves; the side walls and the middle of the bottom surface of the arc blocks are formed with upper guide grooves that communicate with each other, and the middle of the bottom surface of the cover plate is formed with a bottom guide groove, and the bottom guide groove is communicated with the upper guide groove of the corresponding arc block. When it is used, it is installed in the overall mold as a part of the molding mold, so that a mold cavity is formed between it and other molds, which can ensure that the cooling water flows in a wave shape along the wall of the cover plate and the main body, so that the cooling water can penetrate into the thick and large parts of the mold cavity for directional cooling, and avoid cooling the thinner parts of the mold cavity.

Description

Technical field:

[0001] The invention relates to the technical field of casting equipment, and more specifically to a water channel structure of a water-cooled mold for low-pressure casting. Background technology:

[0002] When the existing wheel hub is cooled during low-pressure casting, in order to ensure sequential cooling, the thicker parts of the mold cavity need to be equipped with stronger cooling, and the thinner parts of the cavity wall need to be equipped with weaker cooling, and the cooling water channel is generally horizontally surrounded, so that in the same circumferential area of ​​the mold, the thicker parts and the thinner parts of the cavity wall are at the same distance from the cooling water channel, and the cooling intensity is consistent, so that a good temperature field cannot be formed during the cooling process of the blank, the thinner parts solidify quickly, and the thicker parts solidify slowly, the cooling efficiency is low, the cooling effect is limited, and it may also lead to insufficient shrinkage compensation during the cooling process and poor molding quality. Summary of the invention:

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a water-cooled mold water channel structure for low-pressure casting. When in use, it is installed in the overall mold as a part of the molding mold, so that a mold cavity is formed between it and other molds, which can ensure that the cooling water flows in a wave shape along the wall of the cover plate and the main body. Because it flows in a wave shape, in the same circumferential area of ​​the water-cooled mold, the water channel is close to the wall thickness of the molded product at the mold cavity, and is far away from the thinner part of the molded product at the mold cavity, so that the cooling intensity can be set according to needs, so that the cooling water can penetrate into the thick part of the mold cavity for directional cooling, and avoid cooling the thinner part of the mold cavity, so as to generate a sequential cooling temperature field in the casting process, optimize the blank molding quality, and improve the cooling efficiency.

[0004] The solution of the present invention to solve the technical problem is:

[0005] A water channel structure for a water-cooled mold for low-pressure casting, comprising a cover plate and a main body, wherein the cover plate is an annular body, and a plurality of inverted triangular or inverted trapezoidal arc blocks extending downward are formed on its bottom surface, and the main body is a cylindrical component or an annular sleeve, and a plurality of inverted triangular or inverted trapezoidal arc grooves extending downward are formed on its top surface, and the arc blocks are inserted into the corresponding arc grooves;

[0006] The side wall and the middle of the bottom surface of the arc block are formed with upper guide grooves that communicate with each other, and the middle of the bottom surface of the cover plate is formed with a bottom guide groove, which communicates with the upper guide groove of the corresponding arc block;

[0007] The top edge of the cover plate is formed with a water inlet hole and a water outlet hole penetrating downwards, and the water inlet hole and the water outlet hole are communicated with the corresponding bottom guide groove.

[0008] The upper ends of the water inlet and the water outlet are both connected with connectors.

[0009] The top surface of the main body is formed with a middle annular slot, and the bottom surface of the middle annular slot is formed with a plurality of arc grooves.

[0010] The inner side wall and the bottom surface of the arc-shaped groove are formed with lower guide grooves that are connected to each other, and the lower guide grooves are aligned and correspond to the corresponding upper guide grooves.

[0011] A lower annular groove is formed on the bottom surface of the middle annular slot, the lower annular groove is communicated with the lower guide groove, and the lower annular groove is aligned with and communicated with the bottom guide groove.

[0012] The bottom surface of the arc block is an arc-shaped surface or a wavy surface.

[0013] The bottom surface of the arc groove is an arc surface or a wave surface, which matches with the arc block.

[0014] The outstanding effects of the present invention are:

[0015] When it is in use, it is installed in the overall mold as a part of the molding mold, so that a mold cavity is formed between it and other molds, which can ensure that the cooling water flows in a wave shape along the wall of the cover plate and the main body. Because it flows in a wave shape, in the same circumferential area of ​​the water-cooled mold, the water channel is close to the wall thickness of the molded product at the mold cavity, but away from the thinner part of the molded product at the mold cavity. Therefore, the cooling intensity is set according to needs, so that the cooling water can penetrate into the thick part of the mold cavity for directional cooling, and avoid cooling the thinner part of the mold cavity, so as to generate a sequential cooling temperature field in the casting process, optimize the blank molding quality, and improve the cooling efficiency. Description of the drawings:

[0016] Figure 1 It is a partial cross-sectional view of the cover plate and the main body of the present invention in a separated state;

[0017] Figure 2 is a partial top view of the main body of the present invention;

[0018] Figure 3 is a partial bottom view of the cover plate of the present invention;

[0019] Figure 4 It is a partial top view of the cover plate of the present invention. Specific implementation method:

[0020] For example, see Figures 1 to 4As shown, a water channel structure of a water-cooled mold for low-pressure casting includes a cover plate 10 and a main body 20. The cover plate 10 is an annular body, and a plurality of inverted triangular or inverted trapezoidal arc blocks 11 extending downward are formed on its bottom surface. The main body 20 is a cylindrical component or an annular sleeve, and a plurality of inverted triangular or inverted trapezoidal arc grooves 21 extending downward are formed on its top surface. The arc blocks 11 are inserted into the corresponding arc grooves 21.

[0021] The side wall and the middle of the bottom surface of the arc block 11 are formed with upper guide grooves 12 that communicate with each other, and the middle of the bottom surface of the cover plate 10 is formed with a bottom guide groove 13, and the bottom guide groove 13 is communicated with the upper guide groove 12 of the corresponding arc block 11;

[0022] The top edge of the cover plate 10 is formed with a water inlet hole 14 and a water outlet hole 15 penetrating downwards, and the water inlet hole 14 and the water outlet hole 15 are communicated with the corresponding bottom guide groove 13 .

[0023] Furthermore, the upper ends of the water inlet 14 and the water outlet 15 are both connected to the connector 1 .

[0024] Furthermore, a middle annular slot 22 is formed on the top surface of the main body 20 , and a plurality of arc-shaped slots 21 are formed on the bottom surface of the middle annular slot 22 .

[0025] Furthermore, the inner side wall and the bottom surface of the arc-shaped groove 21 are formed with lower guide grooves 23 that are connected to each other, and the lower guide grooves 23 are aligned and correspond to the corresponding upper guide grooves 12.

[0026] Furthermore, a lower annular groove 24 is formed on the bottom surface of the middle annular slot 22 , and the lower annular groove 24 is communicated with the lower guide groove 23 . The lower annular groove 24 is vertically aligned with and communicated with the bottom guide groove 13 .

[0027] Furthermore, the bottom surface of the arc block 11 is an arc-shaped surface or a wavy surface.

[0028] Furthermore, the bottom surface of the arc groove 21 is an arc surface or a wavy surface, which matches the arc block 11 .

[0029] When in use, the main body 20 of this embodiment can be a cylindrical component or an annular sleeve. When it is a cylindrical component, a middle annular slot 22 is formed on its top surface near the outer wall.

[0030] The cover plate 10 can be covered on the top surface of the main body 20, and then welded and fixed. The two connectors 1 are connected to the water inlet pipe and the water outlet pipe. The upper guide groove 12 corresponds to and communicates with the lower guide groove 23, and the bottom guide groove 13 is aligned and communicated with the lower annular groove 24. At this time, the cooling water can flow along the upper guide groove 12, the lower guide groove 23, the bottom guide groove 13 and the lower annular groove 24 after entering from the water inlet pipe for cooling. It flows along the wall of the cover plate 10 and the main body 20 in a corrugated shape, and finally, it is discharged from the water outlet pipe. As a part of the molding mold, it is installed in the overall mold (such as with other mold parts). The water-cooled mold is combined with other molds, or welded, installed, or directly formed on other molds) to form a mold cavity between it and other molds, and its cooling water flows in a wave shape. Due to its wave shape flow, in the same circumferential area of ​​the water-cooled mold, the water channel is close to the wall thickness of the molded product at the mold cavity, but far away from the thinner part of the molded product at the mold cavity. Therefore, the cooling intensity is set according to needs, so that the cooling water can penetrate into the thick part of the mold cavity for directional cooling, and avoid cooling the thinner part of the mold cavity, so as to generate a sequential cooling temperature field in the casting process, optimize the blank molding quality, and improve the cooling efficiency.

[0031] The cover plate 10 and the main body 20 in the drawings of this embodiment are simplified views, and the main body 20 in the drawings is an annular sleeve. It can be set according to different molds of the manufactured products. For example, when it is used as a side mold of an automobile wheel hub, the inner side wall of the main body 20 is also formed with a convex part of the molding mold, and the arc block 11 and the arc groove 21 can be set obliquely as needed to ensure that the water channel can be directional cooled with the thick part of the mold cavity, and avoid cooling the thin part of the mold cavity.

[0032] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A water channel structure for a water-cooled mold for low-pressure casting, comprising a cover plate (10) and a main body (20), characterized in that: The cover plate (10) is an annular body, and a plurality of inverted triangular or inverted trapezoidal arc blocks (11) extending downward are formed on its bottom surface; the main body (20) is a cylindrical component or an annular sleeve, and a plurality of inverted triangular or inverted trapezoidal arc grooves (21) extending downward are formed on its top surface, and the arc blocks (11) are inserted into the corresponding arc grooves (21); The side wall and the middle of the bottom surface of the arc-shaped block (11) are formed with upper guide grooves (12) that communicate with each other, and the middle of the bottom surface of the cover plate (10) is formed with a bottom guide groove (13), and the bottom guide groove (13) communicates with the upper guide groove (12) of the corresponding arc-shaped block (11); The top edge of the cover plate (10) is formed with a water inlet hole (14) and a water outlet hole (15) penetrating downwards, and the water inlet hole (14) and the water outlet hole (15) are in communication with the corresponding bottom guide groove (13); The top surface of the main body (20) is formed with a middle annular slot (22), and the bottom surface of the middle annular slot (22) is formed with a plurality of arc-shaped slots (21); The inner side wall and the bottom surface of the arc-shaped groove (21) are formed with lower guide grooves (23) that are interconnected, and the lower guide grooves (23) are aligned with and correspond to the corresponding upper guide grooves (12); The bottom surface of the arc block (11) is an arc-shaped surface or a wavy surface.

2. A water channel structure for a water-cooled mold for low-pressure casting according to claim 1, characterized in that: The upper ends of the water inlet (14) and the water outlet (15) are both connected to a connector (1).

3. The water channel structure of a water-cooled mold for low-pressure casting according to claim 1, characterized in that: A lower annular groove (24) is formed on the bottom surface of the middle annular slot (22), the lower annular groove (24) is communicated with the lower guide groove (23), and the lower annular groove (24) is vertically aligned with and communicated with the bottom guide groove (13).

4. The water channel structure of a water-cooled mold for low-pressure casting according to claim 1, characterized in that: The bottom surface of the arc-shaped groove (21) is an arc-shaped surface or a wavy surface, which matches the arc-shaped block (11).

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