Lost foam pouring gate structure based on box body casting

Abstract

The utility model discloses an evanescent mode pouring gate structure for casting based on a box body. The evanescent mode pouring gate structure comprises an evanescent mode body, the evanescent mode pouring gate structure further comprises a pouring assembly used for flowing of pouring liquid, and the outer wall of the pouring assembly is fixedly connected with the outer wall of the evanescent mode body. The cross-shaped pouring gate is used for prolonging the length of the main pouring gate, and the utility model relates to the technical field of evanescent mode. According to the device, a flowing channel of molten metal is prolonged by arranging the pouring assembly and the cross-shaped pouring channel, the molten metal can be directly injected into the evanescent mode body, meanwhile, the part, not prone to being filled, in the evanescent mode body can be filled with the molten metal through the pouring assembly, and the air exhaust space is increased while the flowing channel is prolonged; the possibility that bubbles exist on the surface of a finished product is reduced, and the connecting parts of the pouring assembly and the evanescent mode body are pointed ends, so that workers can conveniently separate the finished product from waste materials.

Description

Technical Field

[0001] The utility model relates to the technical field of lost foam, in particular to a lost foam runner structure used for box casting. Background Art

[0002] Lost foam casting, also known as full-mold casting, is a new casting method in which wax or foam models with similar size and shape to the casting are bonded together into a model cluster, coated with refractory paint and dried, buried in dry quartz sand for vibration molding, and poured under negative pressure to vaporize the model, so that the liquid metal occupies the model position and forms a casting after solidification and cooling.

[0003] In the prior art, during the casting process of the box, the design of the runner has an important influence on the quality and production efficiency of the casting. The traditional runner structure may have some problems, such as uneven flow of molten metal, easy formation of bubbles on the surface of the finished product, and other defects. In order to improve the quality and production efficiency of the casting, an optimized lost foam runner structure is needed. Utility Model Content

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a lost foam runner structure for box casting, comprising:

[0005] Lost foam body;

[0006] The lost foam runner structure also includes:

[0007] A casting assembly, wherein the casting assembly is used for the flow of casting liquid, and the outer wall of the casting assembly is fixedly connected to the outer wall of the lost foam body;

[0008] A cross pouring channel, the cross pouring channel is used to extend the length of the total pouring channel, and the outer wall of the cross pouring channel is fixedly connected to the outer wall of the lost foam body;

[0009] The lost foam body comprises a main frame, the outer wall of the main frame is fixedly connected with a connector, the bottom of the connector is provided with a protrusion, the top of the protrusion is provided with a pouring port, the outer side of the pouring port is provided with an overflow port, when the overflow port is filled with molten metal, it indicates that the molten metal is fully filled;

[0010] The casting component includes a main runner, the top of the main runner is fixedly connected to a top runner, the bottom of the top runner is provided with an upper runner, the bottom of the upper runner is provided with a lower runner, the bottom of the lower runner is provided with a bottom runner, and the outer side of the bottom runner is provided with a branch runner, and the lost foam body and the casting component are both made of foam material.

[0011] Preferably, the outer wall of the lost foam body is fixedly connected to the outer wall of the protrusion, the bottom of the pouring port is fixedly connected to the top of the connector, the top of the connector is fixedly connected to the bottom of the overflow port, and the molten metal is injected from the pouring port. The molten metal flows downward from the pouring port. At this time, the molten metal is sequentially injected into the main frame, the protrusion and the connector. At this time, the model vaporizes and disappears, and the molten metal replaces the model.

[0012] Preferably, the outer wall of the upper runner is fixedly connected to the outer wall of the main runner, and the outer wall of the main runner is fixedly connected to the outer wall of the lower runner, and the molten metal in the main runner can flow into the connecting body through the upper runner and the top runner.

[0013] Preferably, the outer wall of the bottom flow channel is fixedly connected to the outer wall of the main runner, the outer wall of the main runner is fixedly connected to the outer wall of the branch flow channel, and the side of the branch flow channel away from the main runner is fixedly connected to the outer wall of the protrusion, and the molten metal flowing into the main runner can be injected into the protrusion through the branch flow channel.

[0014] Preferably, the top runner and the upper runner are fixedly connected to the outer wall of the connector on one side away from the main runner, and the lower runner and the bottom runner are fixedly connected to the outer wall of the main frame on one side away from the main runner. The molten metal in the main runner can flow into the main frame through the bottom runner and the lower runner in sequence, and can also flow into the connector through the upper runner and the top runner.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model prolongs the flow channel of the molten metal by arranging a pouring assembly and a cross pouring channel. The molten metal can be directly injected into the lost foam body and can also fill the part of the lost foam body that is difficult to fill through the pouring assembly. While prolonging the flow channel, the air discharge space is increased, and the possibility of bubbles on the surface of the finished product is reduced. The connecting parts of the pouring assembly and the lost foam body are all pointed, so that the staff can separate the finished product and the waste.

[0017] 2. The utility model sets an overflow port, and the molten metal flows into the main runner, and then is injected into the protrusion through the branch runner. Subsequently, as the molten metal gradually increases, the molten metal in the main runner flows into the main frame through the bottom runner and the lower runner in turn, and finally flows into the connecting body through the upper runner and the top runner. During this process, air can be discharged from the overflow port. When the overflow port is filled with molten metal, it means that the molten metal is full, which solves the problem that bubbles are easily generated on the surface of traditional lost foam casting products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the pouring assembly of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the lost foam body of the utility model;

[0021] Figure 4 It is a structural schematic diagram of A of the utility model.

[0022] In the figure: 1, lost foam body; 2, pouring assembly; 3, cross pouring channel; 11, main frame; 12, connector; 13, protrusion; 14, pouring gate; 15, overflow port; 21, main pouring channel; 22, top runner; 23, upper pouring channel; 24, lower pouring channel; 25, bottom runner; 26, branch runner; DETAILED DESCRIPTION

[0023] 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.

[0024] Example: See Figure 1 - Figure 4 The utility model provides a technical solution: a lost foam runner structure for box casting, comprising:

[0025] Lost foam body 1;

[0026] The lost foam runner structure also includes:

[0027] A casting assembly 2, the casting assembly 2 is used for the flow of casting liquid, and the outer wall of the casting assembly 2 is fixedly connected to the outer wall of the lost foam body 1;

[0028] A cross pouring channel 3, which is used to extend the length of the total pouring channel, and the outer wall of the cross pouring channel 3 is fixedly connected to the outer wall of the lost foam body 1;

[0029] The lost foam body 1 comprises a main frame 11, the outer wall of the main frame 11 is fixedly connected with a connector 12, a protrusion 13 is arranged at the bottom of the connector 12, a pouring port 14 is arranged at the top of the protrusion 13, and an overflow port 15 is arranged at the outer side of the pouring port 14; the outer wall of the lost foam body 1 is fixedly connected with the outer wall of the protrusion 13, the bottom of the pouring port 14 is fixedly connected with the top of the connector 12, the top of the connector 12 is fixedly connected with the bottom of the overflow port 15, the lost foam body 1 and the pouring component 2 are both made of foam material, when in use, the lost foam body 1 and the pouring component 2 are put into a sand box as a whole, and then dry sand is filled in according to the process requirements, and then molten metal is injected from the pouring port 14, and the molten metal flows downward from the pouring port 14, at this time, the molten metal is sequentially injected into the main frame 11, the protrusion 13 and the connector 12, at this time, the model is vaporized and disappears, and the molten metal replaces the model.

[0030] The pouring assembly 2 includes a main runner 21, a top runner 22 is fixedly connected to the top of the main runner 21, an upper runner 23 is arranged at the bottom of the top runner 22, a lower runner 24 is arranged at the bottom of the upper runner 23, a bottom runner 25 is arranged at the bottom of the lower runner 24, and a branch runner 26 is arranged on the outer side of the bottom runner 25. The outer wall of the upper runner 23 is fixedly connected to the outer wall of the main runner 21, the outer wall of the main runner 21 is fixedly connected to the outer wall of the lower runner 24, the outer wall of the bottom runner 25 is fixedly connected to the outer wall of the main runner 21, the outer wall of the main runner 21 is fixedly connected to the outer wall of the branch runner 26, and the side of the branch runner 26 away from the main runner 21 is fixedly connected to the outer wall of the protrusion 13, and the top runner 22 and the upper runner 23 are far away from each other. The side away from the main pouring channel 21 is fixedly connected to the outer wall of the connecting body 12, and the side of the lower pouring channel 24 and the bottom runner 25 away from the main pouring channel 21 is fixedly connected to the outer wall of the main frame 11. In this process, the molten metal flows into the main pouring channel 21, and then is injected into the protrusion 13 through the branch channel 26. Then, as the molten metal gradually increases, the molten metal in the main pouring channel 21 flows into the main frame 11 through the bottom runner 25 and the lower pouring channel 24 in turn, and fills the entire main frame 11 through the cross pouring channel 3, and finally flows into the connecting body 12 through the upper pouring channel 23 and the top runner 22. In this process, air can be discharged from the overflow port 15. When the overflow port 15 is full of molten metal, it means that the molten metal is full.

[0031] The flow channel of the molten metal is extended by providing a pouring assembly 2 and a cross pouring channel 3. While the molten metal is directly injected into the lost foam body 1, the parts of the lost foam body 1 that are difficult to fill can be filled through the pouring assembly 2. While extending the flow channel, the air discharge space is increased, reducing the possibility of bubbles on the surface of the finished product. The connecting parts of the pouring assembly 2 and the lost foam body 1 are all pointed, so that the staff can separate the finished product and the waste.

[0032] Working principle:

[0033] The lost foam body 1 and the casting component 2 are both made of foam. When in use, the lost foam body 1 and the casting component 2 are placed in a sandbox as a whole, and then filled with dry sand according to the process requirements, and then the molten metal is injected from the pouring port 14. The molten metal flows downward from the pouring port 14. At this time, the molten metal is sequentially injected into the main frame 11, the protrusion 13 and the connector 12. At this time, the model is gasified and disappears, and the molten metal replaces the model;

[0034] During this process, the molten metal flows into the main runner 21, and then is injected into the protrusion 13 through the branch runner 26. Then, as the molten metal gradually increases, the molten metal in the main runner 21 flows into the main frame 11 through the bottom runner 25 and the lower runner 24 in turn, and at the same time fills the entire main frame 11 through the cross runner 3, and finally flows into the connector 12 through the upper runner 23 and the top runner 22. During this process, air can be discharged from the overflow port 15. When the overflow port 15 is filled with molten metal, it means that the molten metal is full.

[0035] The flow channel of the molten metal is extended by providing a pouring assembly 2 and a cross pouring channel 3. While the molten metal is directly injected into the lost foam body 1, the parts of the lost foam body 1 that are difficult to fill can be filled through the pouring assembly 2. While extending the flow channel, the air discharge space is increased, reducing the possibility of bubbles on the surface of the finished product. The connecting parts of the pouring assembly 2 and the lost foam body 1 are all pointed, so that the staff can separate the finished product and the waste.

[0036] 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 lost foam runner structure for box casting, comprising: Lost foam body (1); Characterized in that the lost foam runner structure also includes: A casting component (2), the casting component (2) is used for the flow of casting liquid, and the outer wall of the casting component (2) is fixedly connected to the outer wall of the lost foam body (1); A cross pouring channel (3), wherein the cross pouring channel (3) is used to extend the length of the total pouring channel, and the outer wall of the cross pouring channel (3) is fixedly connected to the outer wall of the lost foam body (1); The lost foam body (1) comprises a main frame (11), the outer wall of the main frame (11) is fixedly connected to a connecting body (12), the bottom of the connecting body (12) is provided with a protrusion (13), the top of the protrusion (13) is provided with a pouring port (14), and the outer side of the pouring port (14) is provided with an overflow port (15); The pouring assembly (2) comprises a main runner (21), the top of the main runner (21) is fixedly connected to a top runner (22), the bottom of the top runner (22) is provided with an upper runner (23), the bottom of the upper runner (23) is provided with a lower runner (24), the bottom of the lower runner (24) is provided with a bottom runner (25), and the outer side of the bottom runner (25) is provided with a branch runner (26).

2. The lost foam runner structure for box casting according to claim 1, characterized in that: The outer wall of the lost foam body (1) is fixedly connected to the outer wall of the protrusion (13), the bottom of the pouring port (14) is fixedly connected to the top of the connector (12), and the top of the connector (12) is fixedly connected to the bottom of the overflow port (15).

3. The lost foam runner structure for box casting according to claim 1, characterized in that: The outer wall of the upper runner (23) is fixedly connected to the outer wall of the main runner (21), and the outer wall of the main runner (21) is fixedly connected to the outer wall of the lower runner (24).

4. The lost foam runner structure for box casting according to claim 1, characterized in that: The outer wall of the bottom flow channel (25) is fixedly connected to the outer wall of the main runner (21), the outer wall of the main runner (21) is fixedly connected to the outer wall of the branch flow channel (26), and the side of the branch flow channel (26) away from the main runner (21) is fixedly connected to the outer wall of the protrusion (13).

5. The lost foam runner structure for box casting according to claim 1, characterized in that: The top runner (22) and the upper runner (23) are fixedly connected to the outer wall of the connector (12) at a side away from the main runner (21), and the lower runner (24) and the bottom runner (25) are fixedly connected to the outer wall of the main frame (11) at a side away from the main runner (21).

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