Non-metal riser bush assembly in low-pressure mold of circuit breaker shell

Abstract

The utility model discloses a circuit breaker shell low-voltage mould internal non-metal riser sleeve assembly which comprises a circuit breaker shell body, a circuit breaker mould core is movably installed on the inner surface of the circuit breaker shell body, a first overflow piece is arranged on the top of the circuit breaker mould core, a second overflow piece is arranged on the right side of the first overflow piece, and the second overflow piece is arranged on the right side of the second overflow piece. A first riser bush is arranged on the right side of the second overflow piece, and a second riser bush is arranged on the right side of the first riser bush. According to the device, the first riser sleeve and the second riser sleeve are arranged, and in the shrinkage process of a casting, the first riser sleeve and the second riser sleeve are both made of non-metal heat preservation materials, and meanwhile, a first cover plate and a second cover plate can prevent heat of an injection molding solution in the first riser sleeve and the second riser sleeve from being rapidly diffused; and shrinkage porosity and shrinkage cavities caused by the fact that closed solidified hard skins are formed on the surfaces of injection molding solutions in the first riser sleeve and the second riser sleeve too early are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of riser sleeves, in particular to a non-metal riser sleeve component inside a low-pressure mold of a circuit breaker housing. Background Art

[0002] Riser refers to the supplementary part added on the top or side of the casting to avoid defects in the casting. Function In the casting mold, the cavity of the riser is the cavity for storing liquid metal. It supplies metal when the casting is formed, and has the functions of preventing shrinkage, shrinkage, exhaust and slag collection. The main function of the riser is to compensate for shrinkage.

[0003] In the prior art, risers are mostly made of metal. Since metal has good thermal conductivity, it will cause the surface of the injection solution in the riser to form a closed solidified crust prematurely, thereby hindering the contact between the molten metal and the air. If the casting itself is not solidified at this time, it will not get enough molten steel to compensate for shrinkage, which will cause shrinkage and shrinkage holes. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical solution adopted by the utility model to solve the technical problems is: a non-metallic riser sleeve assembly inside a low-pressure mold of a circuit breaker housing, comprising a circuit breaker housing body, a circuit breaker mold core movably mounted on the inner surface of the circuit breaker housing body, a first overflow piece is arranged on the top of the circuit breaker mold core, a second overflow piece is arranged on the right side of the first overflow piece, a first riser sleeve is arranged on the right side of the second overflow piece, a second riser sleeve is arranged on the right side of the first riser sleeve, a No. 2 cover plate is fixedly connected to the outer surface of the top of the second riser sleeve, a second exhaust hole is opened in the wall of the No. 2 cover plate, and the air in the mold cavity can be discharged through the first exhaust hole opened on the surface of the No. 1 cover plate and the second exhaust hole opened on the surface of the No. 2 cover plate, and the injection molding solution located in the first riser sleeve and the second riser sleeve can supplement the shrinkage of the casting during solidification.

[0005] Preferably, a cover plate No. 1 is fixedly connected to the outer surface of the top of the first riser sleeve, and a first exhaust hole is opened in the wall of the cover plate No. 1. The cover plate No. 1 and the cover plate No. 2 can prevent the rapid diffusion of heat of the injection molding solution in the first riser sleeve and the second riser sleeve.

[0006] Preferably, a second riser packing piece is movably mounted on the inner surface of the second riser sleeve, and an outer surface of the bottom of the second riser packing piece is fixedly connected to an outer surface of the top of the circuit breaker housing body.

[0007] Preferably, a first riser packing piece is movably mounted on the inner surface of the first riser sleeve, the outer surface of the bottom of the first riser packing piece is fixedly connected to the outer surface of the top of the circuit breaker housing body, and the first riser sleeve and the second riser sleeve are both made of non-metallic insulation materials, thereby preventing the injection solution in the first riser sleeve and the second riser sleeve from prematurely forming a closed solidified crust on the surface, thereby causing shrinkage cavities.

[0008] Preferably, the outer surface of the bottom of the first overflow member is fixedly connected to the outer surface of the top of the circuit breaker housing body, a casting hole is opened in the wall of the circuit breaker housing body, and the outer surface of the bottom of the second cover plate is in contact with the outer surface of the top of the second riser shrinkage member.

[0009] Preferably, the outer surface of the top of the circuit breaker housing body is fixedly connected to the outer surface of the bottom of the second overflow piece, and the outer surface of the top of the first riser shrinkage piece is in contact with the outer surface of the bottom of the first cover plate. When the poured injection molding solution is completely solidified, the first overflow piece, the second overflow piece, the first riser shrinkage piece, the second riser shrinkage piece and other redundant parts are removed to obtain the finished circuit breaker housing body.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1. The utility model provides a first exhaust hole and a second exhaust hole. During the cooling process, the air in the mold cavity can be discharged through the first exhaust hole on the surface of the No. 1 cover plate and the second exhaust hole on the surface of the No. 2 cover plate. At the same time, the injection molding solution in the first riser sleeve and the second riser sleeve can supplement the shrinkage of the casting during solidification to prevent defects such as shrinkage cavities.

[0012] 2. The utility model provides the first riser sleeve and the second riser sleeve. During the shrinkage process of the casting, since the first riser sleeve and the second riser sleeve are both non-metallic insulation materials, the first cover plate and the second cover plate can prevent the rapid diffusion of the heat of the injection solution in the first riser sleeve and the second riser sleeve, thereby avoiding the premature formation of a closed solidified crust on the surface of the injection solution in the first riser sleeve and the second riser sleeve, thereby causing shrinkage cavities. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a rear view of the utility model;

[0015] Figure 3 It is an exploded view of the utility model;

[0016] Figure 4 It is a structural schematic diagram of A of the utility model.

[0017] In the figure: 1. circuit breaker housing body; 2. circuit breaker core; 3. first overflow piece; 4. second overflow piece; 5. first riser sleeve; 6. second riser sleeve; 7. casting hole; 8. first riser shrinkage piece; 9. second riser shrinkage piece; 10. No. 1 cover plate; 11. No. 2 cover plate; 12. first exhaust hole; 13. second exhaust hole. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0019] Example: See Figure 1 - Figure 4 The utility model provides a technical solution: a non-metal riser sleeve assembly inside a low-pressure mold of a circuit breaker housing, comprising a circuit breaker housing body 1, a circuit breaker mold core 2 is movably installed on the inner surface of the circuit breaker housing body 1, a first overflow piece 3 is arranged on the top of the circuit breaker mold core 2, a second overflow piece 4 is arranged on the right side of the first overflow piece 3, a first riser sleeve 5 is arranged on the right side of the second overflow piece 4, a second riser sleeve 6 is arranged on the right side of the first riser sleeve 5, a second cover plate 11 is fixedly connected to the outer surface of the top of the second riser sleeve 6, and the second cover plate A second exhaust hole 13 is opened in the wall of 11, and the outer surface of the top of the first riser sleeve 5 is fixedly connected to the first cover plate 10, and a first exhaust hole 12 is opened in the wall of the first cover plate 10. When the injection molding solution is poured, the injection molding solution will cover the surface of the circuit breaker core 2, and the excess injection molding solution will form the first overflow part 3 and the second overflow part 4 after cooling. At the same time, part of the injection molding solution enters the first riser sleeve 5 and the second riser sleeve 6, and is cooled into the first riser shrinkage piece 8 and the second riser shrinkage piece 9 over time.

[0020] A second riser packing 9 is movably mounted on the inner surface of the second riser sleeve 6, and the outer surface of the bottom of the second riser packing 9 is fixedly connected to the outer surface of the top of the circuit breaker housing body 1. A first riser packing 8 is movably mounted on the inner surface of the first riser sleeve 5, and the outer surface of the bottom of the first riser packing 8 is fixedly connected to the outer surface of the top of the circuit breaker housing body 1. During the cooling process, the air in the mold cavity can be discharged through the first exhaust hole 12 opened on the surface of the No. 1 cover plate 10 and the second exhaust hole 13 opened on the surface of the No. 2 cover plate 11. At the same time, the injection molding solution in the first riser sleeve 5 and the second riser sleeve 6 can supplement the shrinkage of the casting during solidification to prevent the occurrence of defects such as shrinkage cavities. When the casting is cooled in the cavity, the thinnest part solidifies first, and its shrinkage can be supplemented by the thicker part of the attachment. When the thicker part solidifies, the injection molding solution in the first riser sleeve 5 and the second riser sleeve 6 can be compensated to prevent the formation of shrinkage cavities;

[0021] During the shrinkage process of the casting, since the first riser sleeve 5 and the second riser sleeve 6 are both non-metallic insulation materials, the first cover plate 10 and the second cover plate 11 can prevent the heat of the injection solution in the first riser sleeve 5 and the second riser sleeve 6 from diffusing rapidly, thereby avoiding the premature formation of a closed solidified crust on the surface of the injection solution in the first riser sleeve 5 and the second riser sleeve 6, thereby causing shrinkage cavities.

[0022] The outer surface of the bottom of the first overflow member 3 is fixedly connected to the outer surface of the top of the circuit breaker housing body 1, a casting hole 7 is opened in the wall of the circuit breaker housing body 1, the outer surface of the bottom of the second cover plate 11 is in contact with the outer surface of the top of the second riser shrinkage member 9, the outer surface of the top of the circuit breaker housing body 1 is fixedly connected to the outer surface of the bottom of the second overflow member 4, the outer surface of the top of the first riser shrinkage member 8 is in contact with the outer surface of the bottom of the first cover plate 10, when the poured injection molding solution is completely solidified, the circuit breaker core 2 is taken out, and then the first overflow member 3, the second overflow member 4, the first riser shrinkage member 8, the second riser shrinkage member 9 and other redundant parts are removed, and the finished product of the circuit breaker housing body 1 can be obtained.

[0023] Working principle:

[0024] When the injection molding solution is poured through the pouring hole 7, the injection molding solution will cover the surface of the circuit breaker core 2, and the excess injection molding solution will form the first overflow piece 3 and the second overflow piece 4 after cooling. At the same time, part of the injection molding solution enters the first riser sleeve 5 and the second riser sleeve 6, and cools into the first riser shrinkage piece 8 and the second riser shrinkage piece 9 as time goes by.

[0025] During the cooling process, the air in the mold cavity can be discharged through the first exhaust hole 12 opened on the surface of the first cover plate 10 and the second exhaust hole 13 opened on the surface of the second cover plate 11. At the same time, the injection molding solution in the first riser sleeve 5 and the second riser sleeve 6 can supplement the shrinkage of the casting during solidification to prevent the occurrence of defects such as shrinkage cavities. When the casting is cooled in the cavity, the thinnest part solidifies first, and its shrinkage can be supplemented by the thicker part of the attachment. When the thicker part solidifies, the injection molding solution in the first riser sleeve 5 and the second riser sleeve 6 can be compensated to prevent the formation of shrinkage cavities;

[0026] During the shrinkage of the casting, since the first riser sleeve 5 and the second riser sleeve 6 are both made of non-metallic insulation materials, the first cover plate 10 and the second cover plate 11 can prevent the rapid diffusion of the heat of the injection molding solution in the first riser sleeve 5 and the second riser sleeve 6, thereby avoiding the premature formation of a closed solidified crust on the surface of the injection molding solution in the first riser sleeve 5 and the second riser sleeve 6, thereby causing shrinkage cavities;

[0027] When the poured injection molding solution is completely solidified, the circuit breaker core 2 is taken out, and then the first overflow piece 3, the second overflow piece 4, the first riser feeding piece 8, the second riser feeding piece 9 and other redundant parts are removed to obtain the finished product of the circuit breaker housing body 1.

[0028] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A non-metal riser sleeve assembly inside a low-pressure mold of a circuit breaker housing, comprising a circuit breaker housing body (1), characterized in that: A circuit breaker core (2) is movably mounted on the inner surface of the circuit breaker housing body (1); a first overflow piece (3) is arranged on the top of the circuit breaker core (2); a second overflow piece (4) is arranged on the right side of the first overflow piece (3); a first riser sleeve (5) is arranged on the right side of the second overflow piece (4); a second riser sleeve (6) is arranged on the right side of the first riser sleeve (5); a second cover plate (11) is fixedly connected to the outer surface of the top of the second riser sleeve (6); a second exhaust hole (13) is opened in the wall of the second cover plate (11).

2. A non-metal riser sleeve assembly inside a low-pressure mold of a circuit breaker housing according to claim 1, characterized in that: A first cover plate (10) is fixedly connected to the outer surface of the top of the first riser sleeve (5), and a first exhaust hole (12) is provided in the wall of the first cover plate (10).

3. The non-metal riser sleeve assembly inside the low-pressure mold of a circuit breaker housing according to claim 1, characterized in that: A second riser packing piece (9) is movably mounted on the inner surface of the second riser sleeve (6), and the outer surface of the bottom of the second riser packing piece (9) is fixedly connected to the outer surface of the top of the circuit breaker housing body (1).

4. The non-metal riser sleeve assembly inside the low-pressure mold of a circuit breaker housing according to claim 1, characterized in that: A first riser packing piece (8) is movably mounted on the inner surface of the first riser sleeve (5), and the outer surface of the bottom of the first riser packing piece (8) is fixedly connected to the outer surface of the top of the circuit breaker housing body (1).

5. The non-metal riser sleeve assembly inside the low-pressure mold of a circuit breaker housing according to claim 1, characterized in that: The outer surface of the bottom of the first overflow member (3) is fixedly connected to the outer surface of the top of the circuit breaker housing body (1), a casting hole (7) is provided in the wall of the circuit breaker housing body (1), and the outer surface of the bottom of the second cover plate (11) is in contact with the outer surface of the top of the second riser shrinkage member (9).

6. A non-metal riser sleeve assembly inside a low-pressure mold of a circuit breaker housing according to claim 4, characterized in that: The outer surface of the top of the circuit breaker housing body (1) is fixedly connected to the outer surface of the bottom of the second overflow member (4), and the outer surface of the top of the first riser compensation member (8) is in contact with the outer surface of the bottom of the first cover plate (10).

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