Volute double-flow-channel partition plate forming die

Abstract

The utility model relates to the technical field of volute molds, in particular to a volute double-runner partition plate forming mold which comprises a mold body and a pouring cup, the pouring cup comprises a direct pouring part and a bearing part fixedly connected to the top of the direct pouring part, and under the condition that the mold body and the pouring cup are assembled, the bearing part is fixedly connected to the top of the direct pouring part. The bottom of the straight pouring part of the pouring cup is inserted into the cross gate of the mold body, the distance between the bottom surface of the cross gate of the mold body and the top surface of the bearing part of the pouring cup is not less than 185 mm, and the distance between the top of the pouring cup and the bottom surface of the cross gate of the mold body is greater than the distance between the riser of the mold body and the bottom surface of the cross gate of the mold body. According to the embodiment of the invention, the internal pressure difference of the cavity is increased in the pouring process by increasing the total pressure head of the mold, so that the mold filling speed and the pressure difference of the mold during pouring are increased, the dead head can be ensured to be filled, the probability of missing, shrinkage porosity and air holes of the volute double-flow-channel partition plate is reduced, and the yield of castings is remarkably increased.

Description

Technical Field

[0001] The present application relates to the technical field of volute moulds, and in particular to a volute double-channel partition moulding mould. Background Art

[0002] In the prior art, during the casting of the double-channel volute, the casting speed of the mold and the exhaust problem are limited, and the partition will have the phenomenon of lack of meat, shrinkage and air holes, which significantly reduces the yield rate of the volute molding and seriously affects the delivery progress. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present application provides a volute double-channel baffle molding mold. The embodiment of the present application increases the total pressure head of the mold to increase the internal pressure difference of the cavity during the pouring process, thereby increasing the filling speed and pressure difference of the mold during pouring, and ensuring that the riser is filled, thereby reducing the probability of lack of meat, shrinkage and air holes in the volute double-channel baffle, and significantly improving the yield rate of the casting.

[0004] The above application objectives of this application are achieved through the following technical solutions:

[0005] A volute double-flow channel baffle forming mold comprises a mold body and a pouring cup, wherein the pouring cup comprises a direct casting portion and a receiving portion fixedly connected to the top of the direct casting portion. When the mold body and the pouring cup are assembled, the bottom of the direct casting portion of the pouring cup is inserted into the horizontal runner of the mold body, the distance between the bottom surface of the horizontal runner of the mold body and the top surface of the receiving portion of the pouring cup is not less than 185 mm, and the distance between the top of the pouring cup and the bottom surface of the horizontal runner of the mold body is greater than the distance between the mold body riser and the bottom surface of the horizontal runner of the mold body.

[0006] Optionally, when the mold body and the pouring cup are assembled, the distance between the top of the pouring cup direct casting portion and the bottom surface of the mold body runner is greater than the distance between the mold body riser and the bottom surface of the mold body runner.

[0007] Optionally, when the mold body and the pouring cup are assembled, the pressure angle of the pouring cup is not less than 36°.

[0008] Optionally, an extension piece is provided on the inner side of the pouring cup, the extension piece protrudes toward the center line direction of the pouring cup, and the extension piece is continuously distributed on the inner side of the direct pouring part and the receiving part of the pouring cup.

[0009] Optionally, one end of the extension piece away from the receiving portion is located on a side of the bottom end surface of the direct casting portion close to the receiving portion.

[0010] In summary, this application has the following beneficial technical effects:

[0011] The embodiment of the present application increases the total pressure head of the mold so that the pressure difference inside the cavity is increased during the pouring process, thereby increasing the filling speed and pressure difference of the mold during pouring, and ensuring that the riser is filled, thereby reducing the probability of lack of meat, shrinkage and air holes in the double-channel baffle of the volute, and significantly improving the yield rate of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a cross-sectional schematic diagram of an embodiment of the present application;

[0013] Figure 2 is a schematic diagram of the pouring cup pressure angle of an embodiment of the present application;

[0014] Figure 3 It is a schematic diagram of an extension piece according to an embodiment of the present application.

[0015] Reference numerals: 11, mold body; 12, runner; 13, riser;

[0016] 21. pouring cup; 22. direct pouring part; 23. receiving part; 24. extension part. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings.

[0018] In order to more clearly understand the technical solution provided by the embodiments of the present application, a brief introduction to the existing volute forming mold is first given.

[0019] In the prior art, the setting position of the mold pouring cup 21 used for pouring the volute will affect the pouring speed and the pressure difference during pouring, which makes it difficult to remove impurities and gases inside the mold cavity during pouring, and the pouring liquid cannot fill the riser 13. After the casting is cooled, the pouring liquid at the pouring gate is used to compensate for shrinkage, which leads to lack of meat, shrinkage and air holes in the double-channel baffle of the volute.

[0020] In order to solve the above technical problems, refer to Figure 1 The embodiment of the present application provides a volute double-flow channel partition molding die, comprising a die body 11 and a pouring cup 21 matched therewith, the pouring cup 21 is used to receive the pouring liquid, the pouring cup 21 comprises a direct casting part 22 and a receiving part 23 fixed to the top of the direct casting part 22, the inner diameter of the receiving part 23 gradually increases in a direction away from the direct casting part 22, and the receiving part 23 can be integrally formed with the direct casting part 22;

[0021] When the mold body 11 and the pouring cup 21 are assembled, the bottom of the direct casting part 22 of the pouring cup 21 is inserted into the runner 12 of the mold body 11, and the distance h between the bottom surface of the runner 12 of the mold body 11 and the top surface of the receiving part 23 of the pouring cup 21 is not less than 185 mm, and the distance between the top of the pouring cup 21 and the bottom surface of the runner 12 of the mold body 11 is greater than the distance between the riser 13 of the mold body 11 and the bottom surface of the runner 12 of the mold body 11.

[0022] The following is a further introduction based on specific usage scenarios.

[0023] When in use, the operator inserts the pouring cup 21 into the mold body 11 so that the bottom outlet of the direct casting part 22 of the pouring cup 21 is located in the cross runner 12. The operator can then pour the pouring liquid into the receiving part 23 of the pouring cup 21. The pouring liquid enters from the receiving part 23 and enters the cavity and the riser 13 through the direct casting part 22 and the cross runner 12 of the mold body 11.

[0024] In this process, since the distance between the bottom surface of the runner 12 of the mold body 11 and the top surface of the receiving portion 23 of the pouring cup 21 is not less than 185 mm, when the mold body 11 and the pouring cup 21 are assembled, the total pressure head height is not less than 185 mm, and the distance between the top of the pouring cup 21 and the bottom surface of the runner 12 of the mold body 11 is greater than the distance between the riser 13 of the mold body 11 and the bottom surface of the runner 12 of the mold body 11, that is, the horizontal position of the top of the pouring cup 21 exceeds the riser 13 of the mold body 11. 3, which increases the pressure difference between the inside and outside of the mold body 11 during the pouring process, significantly improves the filling speed and the exhaust speed, and can make the pouring liquid fill the riser 13 at the bottom of the casting before cooling, avoiding the situation that the riser 13 is not full and the gas and impurities in the mold body 11 are not completely exhausted, so that there is enough unsolidified pouring liquid in the riser 13 for shrinkage compensation during cooling, thereby reducing the probability of lack of meat, shrinkage and pores in the double-flow channel partition of the volute, and significantly improving the yield rate of the casting.

[0025] In general, the embodiments of the present application increase the total pressure head of the mold to increase the pressure difference inside the cavity during the pouring process, thereby increasing the filling speed and pressure difference of the mold during pouring, and ensuring that the riser 13 is filled, thereby reducing the probability of lack of meat, shrinkage and air holes in the double-channel baffle of the volute, and significantly improving the yield rate of the casting.

[0026] As a feasible specific implementation method of the embodiment of the present application, when the mold body 11 and the pouring cup 21 are assembled, the distance between the top of the direct casting part 22 of the pouring cup 21 and the bottom surface of the cross runner 12 of the mold body 11 is greater than the distance between the riser 13 of the mold body 11 and the bottom surface of the cross runner 12 of the mold body 11, that is, the horizontal position of the top of the direct casting part 22 of the pouring cup 21 is higher than the horizontal position of the top of the riser 13 of the mold body 11. This allows the pouring liquid to quickly fill the riser 13 of the mold body 11 during the pouring process. In this way, after the bottom of the casting is cooled, the pouring liquid filled in the riser 13 can quickly sink to compensate for shrinkage, further reducing the probability of lack of meat, shrinkage and air holes in the double-channel baffle of the volute.

[0027] As a feasible specific implementation method of the present application embodiment, refer to Figure 2 When the mold body 11 and the pouring cup 21 are assembled, the pressure angle α of the pouring cup 21 is not less than 36°. When the assembly is completed, the pressure angle of the pouring cup 21 is: the angle between the line between the midpoint of the top surface of the pouring cup 21 and the midpoint of the top surface of the riser 13 farthest from the pouring cup 21 and the horizontal plane. The pressure angle of the pouring cup 21 is not less than 36°, which can further increase the pressure difference during filling, better discharge impurities and exhaust, and further reduce the probability of lack of meat, shrinkage and air holes in the double-channel baffle of the volute.

[0028] As a feasible specific implementation method of the present application embodiment, refer to Figure 3 An extension piece 24 is provided on the inner side of the pouring cup 21, and the extension piece 24 can be integrally formed with the pouring cup 21. The extension piece 24 protrudes toward the center line direction of the pouring cup 21. The extension piece 24 is continuously distributed on the inner sides of the direct casting part 22 and the receiving part 23 of the pouring cup 21, and the extension piece 24 protrudes toward the inner side of the pouring cup 21. In this way, the angle between the extension piece 24 and the inner wall of the pouring cup 21 during pouring can provide an exhaust channel for the internal cavity of the mold body 11, thereby increasing the exhaust speed and further reducing the probability of lack of meat, shrinkage and air holes in the double-channel baffle of the volute.

[0029] In one implementation of the embodiment of the present application, one end of the extension piece 24 away from the receiving portion 23 is located on the side of the bottom end face of the direct casting portion 22 close to the receiving portion 23, that is, the extension piece 24 does not pass through the bottom end face of the pouring cup 21, and the extension piece 24 is at a certain distance from the bottom end face of the pouring cup 21. In this way, it is possible to provide an exhaust channel for the internal cavity of the mold body 11, increase the exhaust speed, and avoid affecting the pouring liquid entering the cavity and the subsequent backflow.

[0030] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-channel partition molding die for a volute, characterized in that: The invention comprises a mold body (11) and a pouring cup (21), wherein the pouring cup (21) comprises a direct pouring portion (22) and a receiving portion (23) fixedly connected to the top of the direct pouring portion (22); when the mold body (11) and the pouring cup (21) are assembled, the bottom of the direct pouring portion (22) of the pouring cup (21) is inserted into the runner (12) of the mold body (11); the distance between the bottom surface of the runner (12) of the mold body (11) and the top surface of the receiving portion (23) of the pouring cup (21) is not less than 185 mm; and the distance between the top of the pouring cup (21) and the bottom surface of the runner (12) of the mold body (11) is greater than the distance between the riser (13) of the mold body (11) and the bottom surface of the runner (12) of the mold body (11).

2. A volute double-flow channel partition forming mold according to claim 1, characterized in that: When the mold body (11) and the pouring cup (21) are assembled, the distance between the top of the direct pouring portion (22) of the pouring cup (21) and the bottom surface of the runner (12) of the mold body (11) is greater than the distance between the riser (13) of the mold body (11) and the bottom surface of the runner (12) of the mold body (11).

3. A volute double-flow channel partition forming mold according to claim 1, characterized in that: When the mold body (11) and the pouring cup (21) are assembled, the pressure angle of the pouring cup (21) is not less than 36°.

4. A volute double-flow channel partition forming mold according to claim 1, characterized in that: An extension piece (24) is arranged inside the pouring cup (21), and the extension piece (24) protrudes toward the center line direction of the pouring cup (21). The extension piece (24) is continuously distributed inside the direct pouring part (22) and the receiving part (23) of the pouring cup (21).

5. A volute double-flow channel partition forming mold according to claim 4, characterized in that: One end of the extension piece (24) away from the receiving portion (23) is located on a side of the bottom end surface of the direct casting portion (22) close to the receiving portion (23).

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