A common mold for changing live blocks of left and right products
By designing a common mold for changing the live block with left and right products, using the combination of convex and grooves and the interchange of live blocks, the problem of the need for two sets of molds in the prior art to produce different products is solved, and cost reduction and efficiency improvement is achieved.
Patent Information
- Application Number
- CN202420860602.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The existing coated sand molds require two sets of molds to produce large and small products with symmetrical conditions but locally different, resulting in increased investment costs and increased production costs.
A common mold for changing the left and right products is designed. By providing a convex on the first mold and a groove on the second mold, combining a positioning pin and a connecting rod, the exchange of the first and second, the third and the fourth mobile blocks is achieved, and molds of different structures are obtained.
The two products share a set of molds, which reduces the cost of molds and improves the utilization rate and production efficiency of molds. At the same time, the design is reasonable and the structure is simple, which is suitable for large-scale promotion.
Smart Images
Figure CN222740201U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of coated sand moulds, in particular to a common mould for exchanging live blocks of left and right products. Background Art
[0002] Sand casting is a casting method that uses sand as the main molding material to prepare the mold. Due to the characteristics of sand casting, it is not limited by the shape, size, complexity and alloy type of parts, and has a short production cycle and low cost. Therefore, sand casting is still the most widely used casting method in casting production. Coated sand casting is a type of sand casting. The use of coated sand to produce coated sand castings is a casting method with low energy consumption, especially the recycling and use of waste sand. The coated sand casting process uses a mold to form the sand mold under high pressure. After the coated sand is baked under high temperature and high pressure in the mold, it is quickly formed, and there is a molten iron flow channel in the sand mold. The shape of the flow channel is also the shape of the casting. In the foundry workshop, the sand core is placed in a designated box, and high-temperature molten iron is poured in from the pouring port, which can slowly evaporate the glue on the surface of the sand core. After cooling, the sand core becomes loose sand, and the corresponding casting is obtained.
[0003] The sand core / sand mold products targeted by existing coated sand molds are mostly fixed, so the structural characteristics of the inner surface of the coated sand mold are also determined. In this case, for left and right products that are symmetrical but have local differences, two sets of molds are also required. Correspondingly, the investment cost of the sand shooting machine will also increase, increasing production costs. Utility Model Content
[0004] Aiming at the technical problems existing in the above-mentioned coated sand mould, the utility model proposes a common mould for changing live blocks of left and right products, which has reasonable design, simple structure, is conducive to reducing production cost and has high utilization rate.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a common mold for changing movable blocks of left and right products, including a first mold and a second mold, the first mold is provided with a molding convexity, and the second mold is provided with a molding groove. After the first mold and the second mold are connected, a sand mold cavity is formed between the molding convexity and the molding groove, and two symmetrically distributed first movable block grooves and two symmetrically distributed second movable block grooves are provided on the molding convexity. The two first movable block grooves are used to respectively set the first movable block and the second movable block with different convex surfaces, and the two second movable block grooves are used to respectively set the third movable block and the fourth movable block with different convex surfaces. The first movable block, the second movable block, the third movable block and the fourth movable block are each provided with a pair of pin holes distributed along their respective length directions, and the first mold is provided with a connecting hole corresponding to the pin hole, and the pin hole and the connecting hole are connected by a positioning pin.
[0006] Preferably, the first mold is provided with four positioning protrusions distributed in different directions, the positioning protrusions are in a truncated cone shape, and the positioning protrusions cooperate with the positioning grooves provided on the second mold.
[0007] Preferably, the first movable block, the second movable block, the third movable block and the fourth movable block all include a rectangular bottom plate, the first movable block groove and the second movable block groove are both rectangular countersunk grooves, the countersunk grooves are nested with the bottom plate, and the bottom plates of the first movable block, the second movable block, the third movable block and the fourth movable block are provided with different convex surfaces.
[0008] Preferably, a key groove is provided on the first mold within the range of the molding protrusion, a key block is provided in the key groove, and an identification number is provided on the top surface of the key block.
[0009] Preferably, the key-shaped block is provided with countersunk holes near both ends thereof, and the countersunk holes are provided with countersunk bolts for connecting the first mold.
[0010] Preferably, the sides of the first mold and the second mold are both provided with connecting rods in pairs, and the connecting rods are used to connect with the sand-shooting machine.
[0011] Compared with the prior art, the advantages and positive effects of the utility model are:
[0012] 1. The utility model provides a common mold for changing movable blocks of left and right products. The first movable block and the second movable block, the third movable block and the fourth movable block located in the left and right directions can obtain molds of different structures by interchangeable means. In this way, two products can share a set of molds, reduce mold costs, and improve mold utilization and production efficiency. In addition, the utility model has a reasonable design and a simple structure, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 An expanded view of the opposite surfaces of the first mold and the second mold provided in the embodiment;
[0015] Figure 2 An axonometric view of a first mold provided for an embodiment;
[0016] Figure 3 An axonometric view of a second mold provided in an embodiment;
[0017] Figure 4 A distribution plan diagram of the first movable block, the second movable block, the third movable block and the fourth movable block;
[0018] Figure 5 It is a distribution plan diagram after the first movable block and the second movable block are swapped in position, and the third movable block and the fourth movable block are swapped in left and right positions;
[0019] Figure 6 A bottom view of a first mold provided in an embodiment;
[0020] Figure 7 A bottom view of a second mold provided in an embodiment;
[0021] Figure 8 A perspective view of a first movable block provided for an embodiment;
[0022] Fig. 9 A perspective view of a second movable block provided for an embodiment;
[0023] Fig.10 A perspective view of a third movable block provided for an embodiment;
[0024] Fig.11 A perspective view of a fourth movable block provided for an embodiment;
[0025] In the above figures, 1. first mold; 11. molding protrusion; 12. first movable block groove; 13. second movable block groove; 14. connecting hole; 15. positioning protrusion; 2. second mold; 21. molding groove; 22. positioning groove; 3. first movable block; 4. second movable block; 5. third movable block; 6. fourth movable block; 7. pin hole; 8. key block; 81. identification number; 82. countersunk hole; 9. connecting rod. DETAILED DESCRIPTION
[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.
[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0028] Examples, such as Figures 1 to 11As shown, the utility model provides a common mold for changing live blocks of left and right products, including a first mold 1 and a second mold 2, wherein the first mold 1 is provided with a molding protrusion 11, and the second mold 2 is provided with a molding groove 21. After the first mold 1 and the second mold 2 are butted, a sand mold cavity is formed between the molding protrusion 11 and the molding groove 21. During the period, a sand mold of a corresponding shape can be obtained after sand is shot into the sand mold cavity, and the sand mold can be used to produce castings matching the shape thereof. In order to improve the utilization rate of the mold, the utility model is provided with two symmetrically distributed first movable block grooves 12 and two symmetrically distributed second movable block grooves 13 on the molding convexity 11, the two first movable block grooves 12 are used to respectively set the first movable block 3 and the second movable block 4 with different convex surfaces, the two second movable block grooves 13 are used to respectively set the third movable block 5 and the fourth movable block 6 with different convex surfaces, the first movable block 3, the second movable block 4, the third movable block 5 and the fourth movable block 6 are each provided with a pair of pin holes 7 distributed along their respective length directions, the first mold 1 is provided with a connecting hole 8 corresponding to the pin hole 7, and the pin hole 7 and the connecting hole 8 are connected by a positioning pin.
[0029] In this mold, the first movable block 3, the second movable block 4, the third movable block 5 and the fourth movable block 6 can quickly establish a connection relationship with the first mold 1 through positioning pins, which is convenient for changing positions. The first movable block 3 and the second movable block 4, the third movable block 5 and the fourth movable block 6 located in the left and right directions can change the structural characteristics of the mold in a local position through interchangeability, thereby obtaining molds with different structures. In this way, two products can share a set of molds, reducing mold costs and improving production efficiency. In addition, the design is reasonable, the structure is simple, and the utilization rate of the mold is high.
[0030] In order to improve the quality of the mold closing between the first mold 1 and the second mold 2, the utility model is provided with four positioning protrusions 15 distributed in different directions on the first mold 1, and the positioning protrusions 15 are in the shape of a truncated cone, and the positioning protrusions 15 are matched with the positioning grooves 22 provided on the second mold 2. After the first mold 1 and the second mold 2 are closed, the positioning protrusions 15 and the positioning grooves 22 are directly plugged in relative to each other, which can effectively ensure the alignment quality of the first mold 1 and the second mold 2; at the same time, the truncated cone design of the positioning protrusions 15 has a certain guiding effect, which can reduce the difficulty of plugging with the positioning grooves 22 and reduce the possible collision during plugging.
[0031] In order to improve the interchangeability of different movable blocks in the left and right directions, the first movable block 3, the second movable block 4, the third movable block 5 and the fourth movable block 6 provided by the utility model all include a rectangular bottom plate, the corners of the bottom plate are transitioned with rounded corners, the first movable block groove 12 and the second movable block groove 13 are both rectangular countersunk grooves, the corners of the countersunk grooves are transitioned with rounded corners, the countersunk grooves are nested with the bottom plate, and the bottom plates of the first movable block 3, the second movable block 4, the third movable block 5 and the fourth movable block 6 are provided with different convex surfaces. Among them, the bottom plate of the first movable block 3 is the same shape as the bottom plate of the second movable block 4, which facilitates the first movable block 3 and the second movable block 4 to achieve interchangeable positions, and the bottom plate of the third movable block 5 is the same shape as the bottom plate of the fourth movable block 6, which facilitates the third movable block 5 and the fourth movable block 6 to achieve interchangeable positions.
[0032] In order to realize the numbering of castings, the first mold 1 provided by the utility model is provided with a key groove 21 within the range of the molding protrusion 11, a key block 8 is provided in the key groove 21, and an identification number 81 is provided on the top surface of the key block 8. In this way, the sand mold after sand shooting has a number, which is convenient for identification and management, and the castings produced by using the sand mold also have corresponding numbers, and there is no need to spray code in the later stage.
[0033] In order to facilitate the replacement of the key block 8, the key block 8 provided by the utility model is provided with countersunk holes 82 near both ends thereof, and countersunk bolts for connecting the first mold 1 are provided in the countersunk holes 82. The key block 8 can achieve accurate positioning by cooperating with the key groove 21, and the connection of the countersunk bolts can improve the connection reliability between the key block 8 and the first mold 1, and the countersunk structure will not significantly affect the final molding quality of the sand mold.
[0034] In order to facilitate the installation of the first mold 1 and the second mold 2 on the sand-shooting machine, the utility model provides a pair of connecting rods 9 on the sides of both molds, and the connecting rods 9 are used to connect with the telescopic ends of the cylinders or hydraulic cylinders of the sand-shooting machine.
[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A common mold for changing live blocks of left and right products, comprising a first mold and a second mold, wherein the first mold is provided with a molding protrusion, and the second mold is provided with a molding groove, and after the first mold and the second mold are butted, a sand mold cavity is formed between the molding protrusion and the molding groove, characterized in that: The molding convexity is provided with two symmetrically distributed first movable block grooves and two symmetrically distributed second movable block grooves, the two first movable block grooves are used to respectively set the first movable block and the second movable block with different convex surfaces, the two second movable block grooves are used to respectively set the third movable block and the fourth movable block with different convex surfaces, the first movable block, the second movable block, the third movable block and the fourth movable block are each provided with a pair of pin holes distributed along their respective length directions, the first mold is provided with connecting holes corresponding to the pin holes, and the pin holes and the connecting holes are connected by positioning pins.
2. A common mold for changing live blocks of left and right products according to claim 1, characterized in that: The first mold is provided with four positioning protrusions distributed in different directions, the positioning protrusions are in the shape of a truncated cone, and the positioning protrusions match with the positioning grooves provided on the second mold.
3. A common mold for changing live blocks of left and right products according to claim 2, characterized in that: The first movable block, the second movable block, the third movable block and the fourth movable block all include a rectangular bottom plate, the first movable block groove and the second movable block groove are both rectangular countersunk grooves, the countersunk grooves are nested with the bottom plate, and the bottom plates of the first movable block, the second movable block, the third movable block and the fourth movable block are provided with different convex surfaces.
4. A common mold for changing live blocks of left and right products according to claim 1, characterized in that: A key-shaped groove is arranged on the first mold within the range of the molding protrusion, a key-shaped block is arranged in the key-shaped groove, and an identification number is arranged on the top surface of the key-shaped block.
5. A common mold for changing live blocks of left and right products according to claim 4, characterized in that: The key-shaped block is provided with countersunk holes at positions near both ends thereof, and the countersunk holes are provided with countersunk bolts for connecting the first mold.
6. A common mold for changing live blocks of left and right products according to claim 1, characterized in that: The sides of the first mold and the second mold are both provided with connecting rods in pairs, and the connecting rods are used to connect with the sand-shooting machine.