Lost foam casting gray cast iron for automobile engine cylinder
By designing limit rods and limit holes, slots and insert blocks in the disappearing mold casting of automobile engine cylinders, the problem of position deviation after the disappearing mold is spliced is solved, and the casting accuracy and quality are improved.
Patent Information
- Application Number
- CN202421786490.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-26
AI Technical Summary
During the disappearance die casting process of automobile engine cylinders, the disappearance die casting and splicing is prone to position deviation during splicing and assembly, resulting in an increase in sand extrusion deviation and affecting casting accuracy.
A gray cast iron cast in a vanishing mold for cylinders of automobile engines was designed. By setting up limit rods and limit holes, slots and insert blocks, connecting grooves and connecting blocks, etc., the tight connection and position stability of the upper mold, the middle mold and the lower mold are ensured.
It effectively prevents slight deviation of the position after splicing, improves the overall connection tightness of the disappearing mold body, avoids separation of the upper mold and the lower mold from the middle mold, and ensures the accuracy and quality of the casting process.
Smart Images
Figure CN222890520U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the lost foam technology field, and in particular to a lost foam casting gray cast iron for automobile engine cylinders. Background Art
[0002] Automobile engine cylinders are usually made of gray cast iron using the lost foam casting process. Gray cast iron is one of the ideal materials for manufacturing engine cylinders because of its good mechanical properties and castability. The graphite structure of gray cast iron can effectively absorb vibration, thereby reducing noise and improving comfort during engine operation. In addition, gray cast iron is relatively low in cost and easy to process, which meets the dual needs of the automotive industry for cost and performance.
[0003] At present, the lost foam used is mostly segmented casting and splicing to form a lost foam for use. However, during splicing and assembly, since there is no position calibration structure, the molds are only spliced together by fitting together, and there will still be a small position deviation after splicing, resulting in increased sand extrusion and offset when placed in the sand box. Therefore, a lost foam casting gray cast iron for automobile engine cylinders is designed to solve the above-mentioned problems. Utility Model Content
[0004] In order to solve the problem, the present application provides a lost foam casting gray cast iron for automobile engine cylinder.
[0005] The present application provides a lost foam casting gray cast iron for automobile engine cylinders using the following technical solution:
[0006] A lost foam casting gray cast iron for automobile engine cylinders comprises a lost foam main body, which is formed by splicing an upper mold, a middle mold and a lower mold. The upper end of the middle mold is clamped to the upper mold, and the lower end of the middle mold is clamped to the lower mold. The upper mold and the lower mold are both provided with slots at the front and rear parts close to one end of the middle mold. The front and rear parts of the upper and lower ends of the middle mold are fixedly connected to plug blocks, and the plug blocks are plugged into the slots.
[0007] Preferably, a plurality of limiting holes are provided on the upper mold and the lower mold on one side close to the middle mold, and the inner diameter of the upper end of the limiting hole is greater than the inner diameter of the lower end.
[0008] Preferably, the upper and lower ends of the middle mold are fixedly connected to limit rods, and the limit rods and limit holes are matched.
[0009] Preferably, connection grooves are provided on the front and rear side walls of the upper mold and the lower mold, and connection blocks are inserted into the connection grooves.
[0010] Preferably, one side of the connection block is fixedly connected to a connection plate, and the connection plate is plugged into the middle mold.
[0011] Preferably, the front and rear parts of the middle mold are both provided with fixing grooves, and the fixing grooves and the connecting grooves are matched.
[0012] In summary, this application includes the following beneficial technical effects:
[0013] 1. In the utility model, the upper mold, the middle mold and the lower mold are connected together to form the lost foam body by connecting a plurality of limit rods with the limit holes, and after being plugged in by the slots and the plug blocks, a slight displacement of the position after the connection can be prevented. Then, the connecting blocks and the connecting plates are placed in the connecting grooves and the fixing grooves to connect the upper mold with the lower mold, so that the overall connection is tighter and the upper mold and the lower mold are prevented from being separated from the middle mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the main body of the application embodiment;
[0015] Figure 2 is an exploded front view of the main body of the application embodiment;
[0016] Figure 3 It is an exploded rear view of the main body of the embodiment of the application.
[0017] Explanation of the accompanying drawings: 1. Lost foam body; 2. Upper mold; 3. Middle mold; 4. Lower mold; 5. Limit rod; 6. Insert block; 7. Slot; 8. Connecting groove; 9. Fixing groove; 10. Connecting plate; 11. Connecting block; 12. Limiting hole. DETAILED DESCRIPTION
[0018] The following is combined with Figure 1-3 This application is described in further detail.
[0019] The present application discloses a lost foam casting gray cast iron for automobile engine cylinder. Figure 1-3 A lost foam casting gray cast iron for automobile engine cylinder, comprising a lost foam body 1, wherein the lost foam body 1 is formed by splicing an upper mold 2, a middle mold 3 and a lower mold 4, such as Figure 1 As shown, the upper end of the middle mold 3 is clamped with the upper mold 2, and the lower end of the middle mold 3 is clamped with the lower mold 4. The front and rear parts of the upper mold 2 and the lower mold 4 near one end of the middle mold 3 are both provided with slots 7. The front and rear parts of the upper and lower ends of the middle mold 3 are fixedly connected with plug blocks 6, and the plug blocks 6 are plugged into the slots 7. By plugging the plug plates 6 and the slots 7, the upper mold 2, the middle mold 3 and the lower mold 4 are connected to the back side by the connection of the plug blocks 6 and the slots 7, so as to prevent lateral deviation and avoid inaccurate processing due to slight deviations.
[0020] By adopting the above technical scheme, a plurality of limiting holes 12 are opened on the upper mold 2 and the lower mold 4 near the side of the middle mold 3. The inner diameter of the upper end of the limiting hole 12 is larger than the inner diameter of the lower end, which can facilitate the limiting rod 5 to be inserted into the limiting hole 12. The upper and lower ends of the middle mold 3 are fixedly connected to the limiting rod 5, and the limiting rod 5 and the limiting hole 12 are adapted to each other, so that the limiting rod 5 remains stable after being inserted into the limiting hole 12, and the tight connection can also avoid lateral deviation.
[0021] By adopting the above technical scheme, connecting grooves 8 are provided on the front and rear side walls of the upper mold 2 and the lower mold 4, and the connecting blocks 11 are inserted into the connecting grooves 8. One side of the connecting block 11 is fixedly connected to the connecting plate 10, and the connecting plate 10 is inserted into the middle mold 3. The front and rear parts of the middle mold 3 are provided with fixing grooves 9, and the fixing grooves 9 and the connecting grooves 8 are adapted to each other. The connecting plate 10 is placed in the fixing grooves 9, and the connecting blocks 11 are placed in the connecting grooves 8, so that after being assembled into the lost mold main body 1, they are limited and fixed, which prevents the upper mold 2 and the lower mold 4 from being separated from the middle mold 3, and also connects the upper mold 2 with the lower mold 4, so that the overall connection is tighter.
[0022] The implementation principle of the lost foam casting of gray cast iron for automobile engine cylinder in the embodiment of the present application is as follows: the middle mold 3 is placed horizontally, and then the upper mold 2 and the lower mold 4 are placed on both sides of the middle mold 3 respectively, and the limiting rod 5 is aligned with the corresponding limiting hole 12, and then the upper mold 2 and the lower mold 4 are pushed to make them close to the middle mold 3, and the limiting rod 5 is inserted into the corresponding limiting hole 12, so that the upper mold 2, the middle mold 3 and the lower mold 4 are connected together to form the lost foam body 1, and the provided limiting hole 12 and the limiting rod 5 are used for connection, and at the same time, the plug block 6 is respectively inserted into the corresponding slot 7, so that the position between the upper mold 2, the middle mold 3 and the lower mold 4 is limited after being affected by the insertion of the slot 7 and the plug block 6 to prevent the position from being slightly offset, and then the connecting plate 10 is placed in the fixing groove 9, and the connecting block 11 is placed in the connecting groove 8, so that after the lost foam body 1 is assembled, it is limited and fixed, and the upper mold 2 and the lower mold 4 are prevented from being separated from the middle mold 3, and the upper mold 2 is also connected to the lower mold 4, so that the overall connection is tighter.
[0023] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0024] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0025] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A lost foam casting grey cast iron for automobile engine cylinder, comprising a lost foam body (1), characterized in that: The lost foam body (1) is formed by splicing an upper mold (2), a middle mold (3) and a lower mold (4); the upper end of the middle mold (3) is clamped to the upper mold (2); the lower end of the middle mold (3) is clamped to the lower mold (4); the front and rear parts of the upper mold (2) and the lower mold (4) close to one end of the middle mold (3) are both provided with slots (7); the front and rear parts of the upper and lower ends of the middle mold (3) are both fixedly connected to plug blocks (6); and the plug blocks (6) are plugged into the slots (7).
2. The lost foam casting gray cast iron for automobile engine cylinder according to claim 1, characterized in that: A plurality of limiting holes (12) are provided on the upper mold (2) and the lower mold (4) on one side close to the middle mold (3), and the inner diameter of the upper end of the limiting hole (12) is greater than the inner diameter of the lower end.
3. The lost foam casting gray cast iron for automobile engine cylinder according to claim 1, characterized in that: The upper and lower ends of the middle mold (3) are fixedly connected to the limiting rod (5), and the limiting rod (5) and the limiting hole (12) are matched.
4. The lost foam casting gray cast iron for automobile engine cylinder according to claim 1, characterized in that: The front and rear side walls of the upper mold (2) and the lower mold (4) are both provided with connection grooves (8), and the connection blocks (11) are inserted into the connection grooves (8).
5. The lost foam casting gray cast iron for automobile engine cylinder according to claim 4, characterized in that: One side of the connection block (11) is fixedly connected to a connection plate (10), and the connection plate (10) is plugged into the middle mold (3).
6. The lost foam casting gray cast iron for automobile engine cylinder according to claim 1, characterized in that: The front and rear parts of the middle mold (3) are both provided with fixing grooves (9), and the fixing grooves (9) and the connecting grooves (8) are matched.