Lost foam casting sand box
By introducing side suction and venting components into the lost foam casting sand box, the problems of inconsistent sand looseness and poor ventilation were solved, improving the molding quality of castings and the safety of the working environment, while reducing production costs and time consumption.
Patent Information
- Application Number
- CN202423190287.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing lost foam casting sand boxes are prone to problems such as inconsistent sand looseness and poor air permeability when producing castings with complex shapes, which affects the quality of castings and increases production costs and time consumption.
The sand box structure adopts a side suction component and a venting component. Through the cooperation of a vacuum machine and a venting block, uniform air extraction is achieved in all positions inside the box to ensure consistent sand looseness. The uniformity of the sand is further improved by the synchronous suction of the bottom permeable mesh plate and the bottom suction connecting pipe.
It achieves consistency in the surface of the casting, improves product quality, and ensures a safe working environment by filtering harmful substances with activated carbon, reducing the risk of impurities entering and enhancing the stability and sealing of the sand box.
Smart Images
Figure CN223571958U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of lost foam casting, in particular to a lost foam casting sand box. BACKGROUND
[0002] Lost foam casting is a kind of precision casting method of near net shape, which is formed by putting a foam plastic mold into a sand box and pouring high-temperature molten metal to make it gasify and disappear, thereby forming a casting.
[0003] The existing lost foam casting sand box mainly adopts a single sand box structure, which is simple and easy to implement, but cannot adapt to the casting requirements of complex shapes; in order to solve this problem, a multi-layer sand box stacking mode can be selected, which can meet the production requirements of complex castings.
[0004] Although the multi-layer sand box stacking mode can improve the complexity of the produced castings, in actual operation, problems such as inconsistent loose degree of the sand and poor ventilation of the sand are prone to occur, which not only affects the quality of the castings, but also increases the production cost and time consumption. CONTENT OF THE INVENTION
[0005] In order to improve the problem that the sand box is prone to inconsistent loose degree of the sand and poor ventilation of the sand, the application provides a lost foam casting sand box.
[0006] The application provides a lost foam casting sand box adopting the following technical scheme:
[0007] The lost foam casting sand box comprises a box body, a side suction assembly and a ventilation assembly, the box body is provided with a sandwich layer, the box body is used for containing filled sand, the side suction assembly comprises a side suction connecting pipe and a vacuum machine, the side suction connecting pipe is arranged in the sandwich layer, a ventilation mesh plate is arranged on the inner wall of the box body, the side suction connecting pipe is communicated with the ventilation mesh plate, the vacuum machine is arranged on the outer wall of the box body, and the vacuum machine is communicated with the side suction connecting pipe, the ventilation assembly comprises a ventilation plug and a cover plate, the ventilation plug is connected with the cover plate, the ventilation plug is inserted into the box body and located between adjacent two white molds, a plurality of ventilation holes are formed in the ventilation plug, the ventilation plug is communicated with the vacuum machine, and the cover plate abuts against the top surface of the box body.
[0008] By adopting the above technical scheme, when pouring and forming, the vacuum machine operates, the side suction connecting pipe is used for sucking the air around the wall of the box body, at the same time, the ventilation plug is used for uniformly sucking the air at each position in the box body, the vacuum sucking at each position in the box body is more uniform, the loose degree of the sand is consistent, which is beneficial to promoting the consistency of the forming surface of the casting and improving the product quality.
[0009] Preferably, the bottom of the box body is provided with a bottom ventilation mesh plate, a bottom suction connecting pipe is arranged between the bottom ventilation mesh plate and the bottom wall of the box body, and the bottom suction connecting pipe is communicated with the vacuum machine.
[0010] By adopting the technical scheme, when the vacuum machine is running, the box is synchronously sucked through the bottom mesh plate and the bottom suction connecting pipe, and the box is sucked in multiple directions through the cooperation of the air-permeable plug-in block and the side suction connecting pipe, thereby further realizing the consistency of the sand looseness.
[0011] Preferably, the bottom mesh plate is hollowly arranged, and the bottom mesh plate is provided with activated carbon.
[0012] By adopting the technical scheme, harmful substances in the filtered and adsorbed gas are reduced, thereby reducing air pollution and ensuring the safety of the working environment.
[0013] Preferably, the cover plate is provided with a through hole, and the cover plate is provided with a protective cover film.
[0014] By adopting the technical scheme, the through hole is used for subsequent pouring of the white mold, and the protective cover film is used for plugging and protecting the through hole before the start of pouring processing, thereby reducing the risk of other impurities falling into the box.
[0015] Preferably, the cover plate is provided with a plug-in clamping strip around the cover plate, the box is provided with a plug-in clamping groove around the top wall of the box, and the plug-in clamping groove is used for inserting the plug-in clamping strip.
[0016] By adopting the technical scheme, when the cover plate and the box are connected and assembled, the plug-in clamping strip is aligned with the plug-in clamping groove and is inserted, thereby realizing stable connection between the cover plate and the box and improving the sealing performance between the cover plate and the box.
[0017] Preferably, the bottom mesh plate is provided with a positioning clamping plate, and the air-permeable plug-in block is provided with a positioning insertion hole at an end away from the cover plate, and the positioning insertion hole is used for inserting the positioning clamping plate.
[0018] By adopting the technical scheme, when the cover plate and the box are connected and assembled, the positioning clamping plate is clamped into the positioning insertion hole, thereby positioning and limiting the installation position of the air-permeable plug-in block, so as to maintain the overall stability of the box during subsequent pouring.
[0019] Preferably, the cooling assembly comprises a cooling pipe and a through pipe, the cooling pipe is arranged in the interlayer, the cooling pipe and the side suction connecting pipe are arranged alternately, the through pipe is arranged on the outer wall of the box, and the through pipe is in communication with the cooling pipe.
[0020] By adopting the technical scheme, the box is cooled through the cooling pipe, thereby facilitating better molding of the casting.
[0021] Preferably, the cover plate is provided with a handle.
[0022] By adopting the technical scheme, the cover plate and the box can be separated.
[0023] To sum up, the present application includes at least one of the following beneficial technical effects:
[0024] 1. When pouring, the vacuum machine is running, and the side suction connecting pipe is used to suck the vacuum of the four walls of the box, at the same time, the air permeable plug is used to uniformly exhaust the air at each position inside the box, so that the vacuum at each position in the box is more uniform, and then the loose degree of the sand is consistent, which is beneficial to promote the consistency of the casting forming surface and improve the product quality.
[0025] 2. When the cover plate is connected and installed with the box, the positioning clamping plate is clamped into the positioning hole to position and limit the installation position of the air permeable plug, so as to maintain the overall stability of the box during the subsequent pouring process. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a structural schematic diagram of the lost foam casting sand box in the embodiment of the present application.
[0027] Figure 2 is a specific position schematic diagram of the side suction connecting pipe and the cooling pipe in the embodiment of the present application.
[0028] Figure 3 is a structural schematic diagram of the air permeable plug cooperating with the box in the embodiment of the present application.
[0029] Explanation of reference signs: 1, box; 11, interlayer; 12, plug-in clamping groove; 2, side suction assembly; 21, side suction connecting pipe; 22, vacuum machine; 23, air permeable mesh plate; 3, bottom air permeable mesh plate; 31, positioning clamping plate; 4, bottom suction connecting pipe; 5, air permeable assembly; 51, air permeable plug; 511, positioning hole; 52, air permeable hole; 53, cover plate; 531, plug-in clamping strip; 532, handle; 533, through hole; 534, protective cover film; 6, cooling assembly; 61, cooling pipe; 62, through pipe. DETAILED DESCRIPTION
[0030] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0031] The following will be described in combination with the drawings Figures 1-3 The present application will be further described in detail.
[0032] The embodiments of the present application disclose a lost foam casting sand box, such as Figure 1 and 2As shown, it includes a box 1, which has a double layer 11. The box 1 is used to hold the filling molding sand. The white mold is placed in the molding sand and then cast.
[0033] like Figure 2 and 3 As shown, the sand box also includes a side suction assembly 2, which includes a side suction connecting pipe 21 and a vacuum machine 22. The side suction connecting pipe 21 is located inside the interlayer 11. A breathable mesh plate 23 is provided on the inner wall of the box body 1, and the side suction connecting pipe 21 is connected to the breathable mesh plate 23. The vacuum machine 22 is located on the outer wall of the box body 1 and is connected to the side suction connecting pipe 21. A bottom permeable mesh plate 3 is provided at the bottom of the box body 1, and a bottom suction connecting pipe 4 is provided between the bottom permeable mesh plate 3 and the bottom wall of the box body 1. The bottom suction connecting pipe 4 is connected to the vacuum machine 22.
[0034] To filter harmful substances in the gas during suction, thereby reducing air pollution and ensuring a safe working environment, the bottom permeable mesh plate 3 is hollow and contains activated carbon. The activated carbon filters and adsorbs harmful substances in the gas, thus reducing air pollution and ensuring a safe working environment.
[0035] like Figure 2 and 3 As shown, the sand box also includes a venting component 5, which includes a venting block 51 and a cover plate 53. The venting block 51 is connected to the cover plate 53. The venting block 51 is inserted into the box body 1 and located between two adjacent white molds. The venting block 51 has several venting holes 52. The venting block 51 is connected to the vacuum machine 22. The cover plate 53 abuts against the top surface of the box body 1.
[0036] like Figure 2 and 3 As shown, the cover plate 53 has a through hole 533 and a protective cover film 534. The through hole 533 is used for subsequent casting of the white mold. Before the casting process begins, the protective cover film 534 seals and protects the through hole 533, reducing the risk of other impurities falling into the housing 1. The cover plate 53 has insertion strips 531 around its perimeter, and the four walls of the top surface of the housing 1 have corresponding insertion slots 12 for the insertion strips 531 to be inserted. When the cover plate 53 is connected and assembled with the housing 1, the insertion strips 531 are aligned with the insertion slots 12 and inserted, which can achieve a stable connection between the cover plate 53 and the housing 1 and improve the sealing between the cover plate 53 and the housing 1.
[0037] like Figure 3As shown, the bottom net plate 3 is fixedly connected with a positioning clamping plate 31, and the air permeable plug 51 is provided with a positioning insertion hole 511 at one end away from the cover plate 53, and the positioning insertion hole 511 is for inserting the positioning clamping plate 31. When the cover plate 53 is connected and installed with the box body 1, the positioning clamping plate 31 is clamped into the positioning insertion hole 511 to position and limit the installation position of the air permeable plug 51, so as to maintain the overall stability of the inside of the box body 1 in the subsequent pouring process.
[0038] As shown in the drawings, Figure 2 In order to facilitate disassembly, the cover plate 53 is also fixedly connected with a handle 532, which is convenient for the operator to lift the cover plate 53.
[0039] When pouring and forming, the vacuum machine 22 operates to suck the vacuum of the four walls of the box body 1 through the side suction connecting pipe 21. At the same time, the air in the inside of the box body 1 is uniformly sucked through the air permeable plug 51, so that the vacuum of each part in the box body 1 is more uniform, and then the loose degree of the sand is consistent, which is beneficial to promote the consistency of the forming surface of the casting and improve the product quality.
[0040] When the vacuum machine 22 operates, the inside of the box body 1 is synchronously sucked through the bottom net plate 3 and the bottom suction connecting pipe 4, and the cooperation of the air permeable plug 51 and the side suction connecting pipe 21 realizes the suction of the inside of the box body 1 from multiple directions, which further realizes the consistency of the loose degree of the sand.
[0041] As shown in the drawings, Figure 2 and 3 The sand box also includes a cooling assembly 6, which includes a cooling pipe 61 and a through pipe 62. The cooling pipe 61 is arranged in the interlayer 11, and the cooling pipe 61 is staggered with the side suction connecting pipe 21. The through pipe 62 is arranged on the outside wall of the box body 1, and the through pipe 62 is in communication with the cooling pipe 61. The inside of the box body 1 is cooled through the cooling pipe 61, which is beneficial to the better forming effect of the casting.
[0042] The implementation principle of the lost foam casting sand box according to the embodiment of the present application is as follows:
[0043] When pouring and forming, the vacuum machine 22 operates to suck the vacuum of the four walls of the box body 1 through the side suction connecting pipe 21, and the air in the inside of the box body 1 is uniformly sucked through the air permeable plug 51. The bottom net plate 3 is in communication with the bottom suction connecting pipe 4, so that the vacuum of each part in the box body 1 is more uniform, and then the loose degree of the sand is consistent, which is beneficial to promote the consistency of the forming surface of the casting and improve the product quality.
[0044] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. An expendable pattern casting sand box, characterized by: The utility model provides a sand casting box, including box (1), side suction subassembly (2) and venting subassembly (5), the box (1) is equipped with interlayer (11), and the box (1) is used to hold filled sand in, side suction subassembly (2) includes side suction connecting pipe (21) and vacuum machine (22), the side suction connecting pipe (21) is located in interlayer (11), and the box (1) inner wall is equipped with venting screen (23), and the side suction connecting pipe (21) is communicated with venting screen (23), and the vacuum machine (22) is located in the outer wall of box (1), and the vacuum machine (22) is communicated with side suction connecting pipe (21), and venting subassembly (5) includes venting plug-in block (51) and cover plate (53), and venting plug-in block (51) is connected with cover plate (53), and venting plug-in block (51) is inserted into the box (1) and is located between two adjacent white moulds, and a plurality of venting holes (52) are formed in venting plug-in block (51), and venting plug-in block (51) is communicated with vacuum machine (22), and cover plate (53) is abutted on the top surface of box (1).
2. An evaporative pattern casting sand box according to claim 1, characterized in that: The bottom of the box (1) is provided with a bottom venting screen (3), and the bottom venting screen (3) and the bottom wall of the box (1) are provided with a bottom suction connecting pipe (4), and the bottom suction connecting pipe (4) is communicated with the vacuum machine (22).
3. An evaporative pattern casting sand box according to claim 2, wherein: The bottom venting screen (3) is hollow, and the bottom venting screen (3) is provided with activated carbon.
4. An evaporative pattern casting sand box as defined in claim 1, wherein: The cover plate (53) is provided with a through hole (533), and the cover plate (53) is provided with a protective cover film (534).
5. An expendable pattern casting sand box according to claim 1, wherein: The cover plate (53) is provided with a plug-in clamping strip (531) around the cover plate (53), and the top surface of the box (1) is provided with a plug-in clamping groove (12) around the wall, and the plug-in clamping groove (12) is used for inserting the plug-in clamping strip (531).
6. An evaporative pattern casting sand box as defined in claim 2, wherein: The bottom venting screen (3) is provided with a positioning clamping plate (31), and the venting plug-in block (51) is provided with a positioning insertion hole (511) away from the cover plate (53), and the positioning insertion hole (511) is used for inserting the positioning clamping plate (31).
7. An expendable pattern casting sand box according to claim 1, wherein: The utility model also includes a cooling assembly (6), which includes a cooling pipe (61) and a through pipe (62), the cooling pipe (61) is arranged in the interlayer (11), and the cooling pipe (61) and the side suction connecting pipe (21) are arranged alternately, the through pipe (62) is arranged on the outer side wall of the box (1), and the through pipe (62) is communicated with the cooling pipe (61).
8. An evaporative pattern casting sand box as defined in claim 1, wherein: The cover plate (53) is provided with a handle (532).