Slag discharging device for curved-surface castings
By designing an exhaust slag device for curved castings, the problem of difficulty in discharge of gas and inclusions during casting is solved, and efficient casting quality and production efficiency are achieved.
Patent Information
- Application Number
- CN202422307607.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-20
AI Technical Summary
When casting curved castings, the prior art is difficult to effectively discharge gas and inclusions, resulting in air pores and slag inclusion defects, affecting the quality of the casting and increasing the waste rate.
An exhaust slag device including exhaust plates and fixed blocks is designed. Using bolted connections, springs and extruded plate structures, the gas and inclusions are effectively discharged by clamping into the exhaust groove on the surface of the curved casting, and wear-resistant rubber protective strips are used to prevent damage to the surface of the casting.
It improves the quality and production efficiency of castings, reduces the scrap rate caused by pores and slag inclusions, simplifies the operation process, reduces labor intensity and time costs, and maintains the finish and integrity of the casting surface.
Smart Images
Figure CN223114119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting, in particular to an exhaust slag device for curved surface castings. Background Technique
[0002] At present, during the casting process, it is necessary to exhaust and remove slag from the castings. During the casting process, a large amount of air and bubbles will be brought in when the molten metal fills the mold. If these bubbles are not discharged in time, pores will be formed inside the castings, seriously affecting the quality of the castings. Through the exhaust operation, the bubbles can be effectively discharged, reducing the number of pores in the castings, improving the density and mechanical properties of the castings. The exhaust operation helps to reduce the gas pressure in the mold cavity, making the molten metal fill the mold more smoothly, improving the filling ability. The lower gas pressure also helps to prevent the castings from deforming or being damaged due to internal high pressure. Moreover, during the casting process, the molten metal will carry some slag and impurities. If these impurities are not removed in time, they will remain inside the castings to form inclusions or defects, affecting the quality of the castings. Through the slag removal operation, the slag and impurities can be effectively separated from the molten metal to ensure the purity of the castings.
[0003] When exhausting and removing slag from the current curved surface castings, most of the staff carry out exhaust and slag removal treatment by drilling exhaust holes in the sand core. When drilling, the vibration of the drill bit is likely to cause the sand grains in the sand core to fall off, resulting in sand dropping. When the sand dropping is serious, it will cause the castings to be scrapped due to slag inclusion. Moreover, the exhaust holes will solidify before the castings, making it difficult to discharge the gas, easily causing pores inside the castings, and seriously causing the castings to be scrapped. Since the outer surface of the curved surface castings is a non-vertical structure and the wall thickness difference of the arc top surface is small, it is not easy to discharge the gas and inclusions, easily causing the castings to be scrapped due to pores and slag inclusion defects. Using the current exhaust method, the castings are prone to defects such as pores and slag inclusion, affecting the production quality of the castings. Content of the Utility Model
[0004] The purpose of the utility model is to provide an exhaust slag device for curved surface castings to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: An exhaust slag device for curved surface castings, including an exhaust sheet clamped on the inner wall of the exhaust groove on the surface of the curved surface casting and a fixing block fixed above the exhaust sheet, and further includes:
[0006] A screw hole opened in the middle of the top of the fixing block, and a disassembly bolt is threadedly connected to the inner wall of the screw hole;
[0007] Springs fixed to the upper and lower sides of the left and right of the exhaust fins, with a pressing plate fixed to one end of each spring. A connecting plate is hinged below the pressing plate, and the connecting plate is inclined as a whole. Push plates are slidably connected to the lower sides of the left and right of the exhaust fins, and the top of each push plate is hinged to the lower side of the connecting plate.
[0008] Preferably, guide frames are fixed to the front and rear sides of the left and right of the exhaust fins. Guide blocks are fixed to the front and rear sides of the pressing plate. The guide blocks are located inside the guide frames and are slidably connected to the inner walls of the guide frames.
[0009] Preferably, limit frames are fixed to the lower sides of the left and right of the exhaust fins. The push plates penetrate through the limit frames and are slidably connected to the inner walls of the limit frames.
[0010] Preferably, a protective strip is adhesively bonded to the surface of the bottom of the push plate. The protective strip is semicircular as a whole, and the material of the protective strip is wear-resistant rubber.
[0011] Preferably, magnetic attraction blocks are fixed to the front and rear sides of the fixed block, and the magnetic attraction blocks on the front and rear sides attract each other with opposite poles.
[0012] Preferably, the exhaust fins and the fixed block are both made of 45# steel.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] The present utility model is adapted to the curved surface casting, can effectively discharge the gas and inclusions inside the casting, avoid the formation of porosity and slag inclusion defects in the casting, thereby significantly improving the quality of the casting. After the metal solution solidifies, the device can be removed to complete the exhaust and slag discharge operations. Therefore, it will not cause additional damage or marks on the surface of the casting, and helps to maintain the smoothness and integrity of the casting surface. Compared with the traditional exhaust and slag discharge methods, the use of this device simplifies the operation process, reduces the labor intensity and time cost of the staff, reduces the scrapping of castings caused by porosity and slag inclusion by effectively discharging gas and inclusions, thereby reducing the rejection rate and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 2 is a three-dimensional structural schematic diagram of the present utility model;
[0017] Figure 3 is a three-dimensional structural schematic diagram of another perspective of the present utility model;
[0018] Figure 4 is a three-dimensional structural schematic diagram of a partial structure of the present utility model.
[0019] In the figure: 1, exhaust fin; 2, fixing block; 3, screw hole; 4, disassembly bolt; 5, spring; 6, extrusion plate; 7, connecting plate; 8, push plate; 9, magnetic attraction block; 10, guide frame; 11, guide block; 12, limit frame; 13, protection strip. Specific implementation manner
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0021] Please refer to Figures 1-4 As shown, an exhaust slag device for curved castings includes an exhaust fin 1, the exhaust fin 1 is clamped with the inner wall of the exhaust groove on the surface of the curved casting, a fixing block 2 is fixed at the top of the exhaust fin 1, a screw hole 3 is opened in the middle of the top of the fixing block 2, and a disassembly bolt 4 is threadedly connected to the inner wall of the screw hole 3. Springs 5 are fixed above and below the left and right sides of the exhaust fin 1, one end of each spring 5 is fixed with an extrusion plate 6, a connecting plate 7 is hinged below the extrusion plate 6, and the connecting plate 7 is integrally inclined. Push plates 8 are slidably connected below the left and right sides of the exhaust fin 1, and the top of the push plate 8 is hinged to the lower part of the connecting plate 7.
[0022] Guide frames 10 are fixed in front of and behind the left and right sides of the exhaust fin 1, guide blocks 11 are fixed on the front and rear sides of the extrusion plate 6, the guide blocks 11 are located inside the guide frames 10 and are slidably connected to the inner walls of the guide frames 10. When the extrusion plate 6 moves, the guide blocks 11 will also slide inside the guide frames 10, and the extrusion plate 6 is guided by the guide blocks 11, so that the extrusion plate 6 can only slide back and forth left and right.
[0023] Limit frames 12 are fixed below the left and right sides of the exhaust fin 1, the push plates 8 penetrate through the limit frames 12 and are slidably connected to the inner walls of the limit frames 12. When the connecting plate 7 pushes the push plate 8 to descend, the limit frames 12 can limit the push plate 8 so that the push plate 8 contacts the lower curved casting.
[0024] A protection strip 13 is adhesively bonded to the bottom surface of the push plate 8. The protection strip 13 is integrally semicircular, and the material of the protection strip 13 is wear-resistant rubber. When the push plate 8 descends and contacts the surface of the casting, the protection strip 13 will directly contact the surface of the casting to protect the surface of the casting and prevent the surface of the casting from being damaged.
[0025] Magnetic attraction blocks 9 are fixed on both the front and rear sides of the fixed block 2, and the magnetic attraction blocks 9 on the front and rear sides attract each other with opposite polarities. When multiple devices need to be installed on the surface of a curved casting, the magnetic attraction blocks 9 on the surface of the device will attract each other, thereby completing the assembly operation between the devices.
[0026] The exhaust fin 1 and the fixed block 2 are both made of 45# steel. The exhaust fin 1 and the fixed block 2 are made of 45# steel, making the whole device have high strength and hardness and not easily deformed.
[0027] Working principle: When the staff performs the core-making operation, the staff first inserts the exhaust fin 1 into the exhaust groove above the curved casting. Then the staff can pour the molten metal into the curved casting and wait for the molten metal in the casting to solidify. After the molten metal in the curved casting solidifies, the staff takes out the disassembly bolt 4 and rotates the disassembly bolt 4 into the screw hole 3 on the surface of the fixed block 2. After the disassembly bolt 4 is installed, the staff can lift the disassembly bolt 4 to pull the exhaust fin 1 upward as a whole. At the same time, two fingers of the staff's other hand press the pressing plate 6, thereby making the pressing plate 6 push the connecting plate 7 to move, making the push plate 8 descend. The push plate 8 pushes against the surface of the curved casting below. Then, in cooperation with the staff pulling the disassembly bolt 4 upward, the exhaust fin 1 is removed from the exhaust groove on the surface of the curved casting. Subsequently, the gas and waste residue in the curved casting can be removed from the exhaust groove, completing the exhaust and slag removal operations of the casting.
[0028] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. in the above description is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention.
[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.
[0030] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0031] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.
[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0033] Those skilled in the art will readily conceive of other implementations of the present utility model after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the appended claims.
Claims
1. An exhaust slag device for a curved surface casting, comprising an exhaust piece (1) clamped to the inner wall of an exhaust groove on the surface of the curved surface casting and a fixing block (2) fixed above the exhaust piece (1), characterized in that, Further included are: a screw hole (3) opened in the middle of the top of the fixed block (2), and a disassembly bolt (4) is threadedly connected to the inner wall of the screw hole (3); springs (5) fixed above and below the left and right sides of the exhaust fin (1), one end of each spring (5) is fixed with a pressing plate (6), a connecting plate (7) is hinged below the pressing plate (6), and the connecting plate (7) is integrally inclined. Push plates (8) are slidably connected below the left and right sides of the exhaust fin (1), and the top of each push plate (8) is hinged to the lower part of the connecting plate (7).
2. The exhaust slag device for a curved surface casting according to claim 1, characterized in that: Guide frames (10) are fixed in front of and behind the left and right sides of the exhaust fin (1), guide blocks (11) are fixed on the front and rear sides of the pressing plate (6), and the guide blocks (11) are located inside the guide frames (10) and slidably connected to the inner walls of the guide frames (10).
3. The exhaust slag device for a curved surface casting according to claim 1, characterized in that: Limit frames (12) are fixed below the left and right sides of the exhaust fin (1), and the push plates (8) penetrate through the limit frames (12) and are slidably connected to the inner walls of the limit frames (12).
4. The exhaust slag device for a curved surface casting according to claim 1, characterized in that: A protective strip (13) is adhered to the surface of the bottom of the push plate (8), the protective strip (13) is integrally semicircular in shape, and the material of the protective strip (13) is wear-resistant rubber.
5. The exhaust slag device for a curved surface casting according to claim 1, characterized in that: Magnetic attraction blocks (9) are fixed on the front and rear sides of the fixed block (2), and the magnetic attraction blocks (9) on the front and rear sides attract each other with opposite polarities.
6. The exhaust slag device for a curved surface casting according to claim 1, characterized in that: The materials of the exhaust fin (1) and the fixed block (2) are both 45# steel.