A split casting die for a volute product

Abstract

The utility model discloses a kind of volute product split casting use die casting mould, for realizing the split casting of volute casting, including the fixed mould plate and movable mould plate that can realize mould opening and closing, the fixed mould plate top surface is embedded with fixed mould kernel, the movable mould plate bottom surface is embedded with the movable mould kernel that is abutted with fixed mould kernel, the fixed mould kernel top surface is provided with the first core print and second core print that protrude upwards, the first core print top surface is provided with first forming groove, the fixed mould kernel is embedded with the forming insert extending into first forming groove, the second core print top surface is provided with the second forming groove that is adapted with forming insert, the movable mould kernel bottom surface is provided with the first profiling groove that is adapted with first core print and the second profiling groove that is adapted with second core print, first cavity is enclosed between the first profiling groove and first core print, second cavity is enclosed between the second profiling groove and second core print. The utility model can reduce the production cost of volute casting, help to improve product competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, specifically a die casting mold for split casting of volute-type products. Background Technology

[0002] Volute-type products have complex structures and belong to irregularly shaped hollow profile components, such as volute pump bodies, air duct bends, and sofa and chair armrest components. Figure 1 As shown, an existing sofa armrest component includes a volute body 1 and a volute opening 2 connected to the volute body 1. The width of the volute opening 2 is smaller than the diameter of the volute body 1. If the above-mentioned sofa armrest component is cast using the traditional die-casting method, the volute body 1 needs to be solid in order to achieve demolding after casting; otherwise, it is impossible to pull the core from the volute body 1. However, a solid volute body undoubtedly greatly increases the material cost of the product, which puts the sofa armrest component at a disadvantage in the increasingly competitive market. How to reduce the production cost of sofa armrest components is a problem that manufacturers urgently need to solve. Utility Model Content

[0003] The purpose of this utility model is to provide a die-casting mold for split casting of volute-type products, which can cast volute-type castings with split structures and hollow shapes, greatly reducing the material used in volute-type castings, thereby reducing the production cost of volute-type castings and helping to improve product competitiveness, so as to solve the problem of high production cost of existing volute-type products such as sofa and chair armrests mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A die-casting mold for split casting of volute-type products, used to realize split casting of volute-type castings, includes a fixed mold plate and a movable mold plate that can open and close the mold. The top surface of the fixed mold plate is embedded with a fixed mold core, and the bottom surface of the movable mold plate is embedded with a movable mold core that abuts against the fixed mold core. The top surface of the fixed mold core is provided with an upwardly protruding first core and a second core. The top surface of the first core has a first forming groove. The fixed mold core is embedded with a forming insert that extends into the first forming groove. The top surface of the second core has a second forming groove that matches the forming insert. The bottom surface of the movable mold core has a first contouring groove that matches the first core and a second contouring groove that matches the second core. The first contouring groove and the first core form a first cavity, and the second contouring groove and the second core form a second cavity.

[0006] Preferably, the top of the molded insert is lower than the top surface of the first core.

[0007] Preferably, the top surface of the fixed mold core is provided with a first waste groove located on one side of the first core and the second core, and the first waste groove is connected to the first cavity and the second cavity respectively.

[0008] Preferably, the bottom surface of the moving mold core is provided with a second waste material groove located on one side of the first contour groove and the second contour groove, and the second waste material groove is connected to the first cavity and the second cavity respectively.

[0009] Preferably, the bottom surface of the moving template is connected to two opposing support plates, and the bottom ends of the two support plates are respectively connected to a base plate that is perpendicularly connected to the support plates. The moving template, the two support plates and the two base plates form a movable cavity, and an ejection mechanism for ejecting products from the first cavity and the second cavity is provided in the movable cavity.

[0010] Preferably, the ejection mechanism includes an ejector plate movably disposed within the movable cavity and a plurality of ejector pins connected to the top surface of the ejector plate.

[0011] Preferably, the two support plates are provided with axially extending first limiting grooves on their side walls, and the two moving templates are provided with axially extending second limiting grooves on their side walls.

[0012] Preferably, both the fixed template and the moving template have several lifting holes on their peripheral walls.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a first forming groove and a forming insert on the first core, and setting a second forming groove on the second core, the first shell formed by die casting in the first cavity and the second shell formed by die casting in the second cavity can be snapped together after casting, thereby casting a split-structure volute casting. The inner cavity of the volute casting is hollow, which greatly reduces the material used in the volute casting, thereby reducing the production cost of the volute casting and helping to improve product competitiveness. Moreover, the cast first shell and second shell can be assembled by plugging them together, which is convenient for disassembly and assembly and helps with later maintenance. Attached Figure Description

[0014] Figure 1 This is a structural diagram of an existing sofa chair armrest component.

[0015] Figure 2 This is a cross-sectional view of the volute casting formed by die casting according to this utility model;

[0016] Figure 3 This is a perspective view of a die-casting mold for split casting of a volute-type product according to the present invention;

[0017] Figure 4 This is a cross-sectional view of a die-casting mold for split casting of a volute-type product according to the present invention;

[0018] Figure 5 This is an exploded view of a die-casting mold for split casting of a volute-type product according to the present invention;

[0019] Figure 6 This is a perspective view of the mold core of this utility model;

[0020] Figure 7 This is a perspective view of the moving template and moving mold core of this utility model;

[0021] Figure 8 This is a perspective view of the first and second waste bags of this utility model on the fixed mold core;

[0022] Figure 9 This is a perspective view of the ejection mechanism of this utility model.

[0023] In the diagram: 1. Volute body; 2. Volute opening; 3. Volute casting; 31. First shell; 311. Column; 312. Slot; 32. Second shell; 321. Insert column; 33. Cavity; 4. Fixed mold plate; 5. Moving mold plate; 51. Sprue; 52. Second limiting groove; 6. Fixed mold core; 61. Runner; 62. First scrap groove; 7. Moving mold core; 71. First contour groove; 72. Second contour groove; 73. Second scrap groove; 8. First core; 81. First forming groove; 82. Forming insert; 9. Second core; 91. Second forming groove; 10. First scrap bag; 11. Second scrap bag; 12. Support plate; 121. First limiting groove; 13. Base plate; 14. Ejector plate; 15. Ejector pin; 16. Lifting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "more than" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figure 1-9 A die-casting mold for split casting of volute-type products, used to achieve split casting of volute casting 3. Please refer to [link / reference]. Figure 2 The volute casting 3 adopts a split structure, including a first shell 31 and a second shell 32 that is fastened to the first shell 31. A cavity 33 is formed between the first shell 31 and the second shell 32. A column 311 extending towards the second shell 32 is formed on the inner wall of the first shell 31, and an insertion post 321 extending towards the first shell 31 is formed on the inner wall of the second shell 32. A slot 312 is provided on the end face of the column 311 facing the second shell 32 for the insertion post 321 to be inserted. Through the cooperation of the insertion post 321 and the slot 312, the outer peripheries of the first shell 31 and the second shell 32 are spliced ​​together to achieve rapid assembly of the volute casting 3.

[0027] Please see Figure 3-7 The die-casting mold for split casting of volute-type products includes a fixed mold plate 4 and a movable mold plate 5 that can be opened and closed. A fixed mold core 6 is embedded on the top surface of the fixed mold plate 4, and a movable mold core 7 that abuts against the fixed mold core 6 is embedded on the bottom surface of the movable mold plate 5. The top surface of the fixed mold core 6 is provided with an upwardly protruding first core 8 and a second core 9. (Please refer to...) Figure 4 as well as Figure 6 The first core 8 has a first molding groove 81 on its top surface, and the fixed mold core 6 has a molding insert 82 that extends into the first molding groove 81. The second core 9 has a second molding groove 91 on its top surface that matches the molding insert 82. The moving mold core 7 has a first contouring groove 71 that matches the first core 8 and a second contouring groove 72 that matches the second core 9 on its bottom surface. The first contouring groove 71 and the first core 8 form a first cavity, and the second contouring groove 72 and the second core 9 form a second cavity.

[0028] In this embodiment, the first shell 31 of the volute casting 3 is die-cast in the first cavity, and the column 311 of the first shell 31 is formed in the first forming groove 81; the second shell 32 of the volute casting 3 is die-cast in the second cavity, and the insert 321 of the second shell 32 is formed in the second forming groove 91; please refer to Figure 4 The top of the molding insert 82 is lower than the top surface of the first core 8 so that the molding insert 82 can be die-cast with the first molding groove 81 to form the slot 312; the molding insert 82 is similar in shape to the second molding groove 91 so that the cast first shell 31 and second shell 32 can be accurately connected to the slot 312 through the insert 321.

[0029] By setting a first forming groove 81 and a forming insert 82 on the first core 8, and a second forming groove 91 on the second core 9, the first shell 31 formed by die casting in the first cavity and the second shell 32 formed by die casting in the second cavity can be snapped together after casting, thereby casting a split-structure volute casting 3. The inner cavity of the volute casting 3 is hollow, which greatly reduces the material used in the volute casting 3, thereby reducing the production cost of the volute casting 3 and helping to improve product competitiveness. Moreover, the cast first shell 31 and second shell 32 can be assembled by plugging them together, which is convenient for disassembly and assembly and helps with later maintenance.

[0030] Please see Figure 5-7 Multiple first cores 8 and second cores 9 are provided, and the number of first cores 8, second cores 9, first contour grooves 71, and second contour grooves 72 are the same, which can form batch production and thus improve product production efficiency. In this embodiment, there are two first cores 8 and two second cores 9. The top surface of the fixed mold core 6 is provided with flow channels 61 that communicate with the first cavity and the second cavity respectively. The moving mold plate 5 is provided with a gate 51 connected to the flow channels 61. During the die casting operation, the molten material flows into the flow channels 61 from the gate 51 and then into the first cavity and the second cavity, so that the first shell 31 is formed by die casting in the first cavity and the second shell 32 is formed by die casting in the second cavity.

[0031] Please refer to Figure 5The top surface of the fixed mold core 6 is provided with a first waste groove 62 located on one side of the first core 8 and the second core 9, respectively. The first waste groove 62 is connected to the first cavity and the second cavity, respectively. Please refer to Figure 7 The bottom surface of the moving mold core 7 is provided with a second waste trough 73 located on one side of the first contour groove 71 and the second contour groove 72, respectively. The second waste trough 73 is connected to the first cavity and the second cavity, respectively. Because air bubbles are likely to exist in the molten material that has just flowed into the first cavity and the second cavity, by setting the first waste trough 62 and the second waste trough 73, the material containing air bubbles can be guided into the first waste trough 62 and the second waste trough 73 during product die casting, so as to avoid the existence of voids in the first shell 31 formed by die casting in the first cavity and the second shell 32 formed by die casting in the second cavity, thereby preventing the generation of defective products and improving the product production quality.

[0032] Please see Figure 8 In this embodiment, a first waste bag 10 is formed in the first waste tank 62, and a second waste bag 11 is formed in the second waste tank 73.

[0033] Please see Figure 5-6 Ejector pin holes are respectively provided on the top surface of the fixed mold core 6, the top surface of the first core 8, and the bottom surface of the first scrap groove 62. In this embodiment, the number of ejector pin holes is unlimited. Please refer to Figure 4-5 as well as Figure 9 The bottom surface of the movable template 5 is connected to two opposing support plates 12, and the bottom ends of the two support plates 12 are respectively connected to a base plate 13 that is perpendicularly connected to the support plates 12. The movable template 5, the two support plates 12 and the two base plates 13 form a movable cavity, and an ejection mechanism for ejecting products from the first cavity and the second cavity is provided in the movable cavity.

[0034] The ejection mechanism includes an ejector plate 14 movably disposed within the movable cavity and a plurality of ejector pins 15 connected to the top surface of the ejector plate 14. The ejector pins 15 pass upward through the fixed mold plate 4 and extend into the ejector pin holes. The ejector plate 14 is connected to a power unit, which drives the ejector plate 14 to move within the movable cavity. In this embodiment, the power unit employs existing mature technologies such as cylinders, and its structural principle will not be elaborated here. After the first housing 31 and the second housing 32 are cast, the movable mold plate 5 drives the movable mold core 7 to open relative to the fixed mold plate 4, thereby exposing the first housing 31, the second housing 32, the first scrap bag 10, and the second scrap bag 11. Then, driven upward by the ejector plate 14, the first housing 31, the second housing 32, the first scrap bag 10, and the second scrap bag 11 are ejected from the fixed mold core 6 to facilitate product removal.

[0035] Please see Figure 3The two support plates 12 have axially extending first limiting grooves 121 on their side walls, and the moving template 5 has axially extending second limiting grooves 52 on its side walls. The fixed template 4 and the moving template 5 both have several lifting holes 16 on their peripheral side walls. Before casting the product, multiple bolts are screwed into the corresponding lifting holes 16, and then the entire die-casting mold is lifted onto the production machine. Multiple bolts are then used to press against the first limiting grooves 121 and the second limiting grooves 52 to ensure that the moving template 5 and the fixed template 4 remain stable and do not shift during the die-casting process.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die casting mold for split casting of a volute product, characterized by: For split casting of the volute casting (3), a fixed mold plate (4) and a movable mold plate (5) capable of opening and closing are included. The top surface of the fixed mold plate (4) is provided with a fixed mold core (6), and the bottom surface of the movable mold plate (5) is provided with a movable mold core (7) that abuts against the fixed mold core (6). The top surface of the fixed mold core (6) is provided with an upwardly protruding first core (8) and a second core (9). The top surface of the first core (8) is provided with a first forming groove (81). The fixed mold core (6) is provided with a first forming groove (81) extending to the first forming groove (82). The molding insert (82) is located in the molding groove (81). The top surface of the second core (9) is provided with a second molding groove (91) that is compatible with the molding insert (82). The bottom surface of the moving mold core (7) is provided with a first contouring groove (71) that is compatible with the first core (8) and a second contouring groove (72) that is compatible with the second core (9). The first contouring groove (71) and the first core (8) form a first cavity, and the second contouring groove (72) and the second core (9) form a second cavity.

2. The volute product split-casting die according to claim 1, characterized by: The top of the molded insert (82) is lower than the top surface of the first core (8).

3. The spiral case product split casting die of claim 1, wherein: The top surface of the fixed mold core (6) is provided with a first waste groove (62) located on one side of the first core (8) and the second core (9), and the first waste groove (62) is connected to the first cavity and the second cavity respectively.

4. The volute product split-casting die according to claim 3, characterized by: The bottom surface of the moving mold core (7) is provided with a second waste groove (73) located on one side of the first contour groove (71) and the second contour groove (72), and the second waste groove (73) is connected to the first cavity and the second cavity respectively.

5. The spiral case product split-casting die according to any one of claims 1 to 4, characterized in that: The bottom surface of the moving template (5) is connected to two opposing support plates (12), and the bottom ends of the two support plates (12) are respectively connected to a bottom plate (13) that is perpendicular to the support plate (12). The moving template (5), the two support plates (12) and the two bottom plates (13) form a movable cavity. The movable cavity is provided with an ejection mechanism for ejecting the products in the first cavity and the second cavity.

6. The volute product split-casting die according to claim 5, characterized by: The ejection mechanism includes an ejector plate (14) movably disposed in the movable cavity and a plurality of ejector pins (15) connected to the top surface of the ejector plate (14).

7. The volute product split-casting die according to claim 5, characterized by: The two support plates (12) are respectively provided with axially extending first limiting grooves (121) on their side walls, and the two side walls of the moving template (5) are respectively provided with axially extending second limiting grooves (52).

8. The volute product split-casting die according to claim 5, characterized by: The fixed template (4) and the moving template (5) are provided with several lifting holes (16) on their surrounding walls.

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