Metal mold casting for sand casting and use method thereof

Abstract

The present invention discloses a metal mold for sand casting, including a base, on which three groups of metal outer molds spliced ​​in an annular shape are plugged and unplugged, and an opening is provided on the top of the three groups of metal outer molds after splicing, and an inner sand mold is plugged and unplugged on the base at the bottom of the inner side of the metal outer mold, and the inner sand mold is cast and formed by three groups of inner core molds spliced ​​in an annular shape. A product is made by sand casting process in a closed space composed of the base, the metal outer mold and the inner sand mold, and its casting and use method include: using metal aluminum as the outer mold mold of the product, using a sand mold to make an outer mold metal mold, the product is generally a ring-shaped shape, and the outer mold is evenly divided into three equal parts; using glass glue as the mold of the inner core of the product; engraving on the metal mold aluminum product; combining metal mold production with sand casting. The present invention belongs to the field of sand casting technology, specifically a metal mold casting for sand casting and a use method thereof.

Description

Technical Field

[0001] The invention belongs to the technical field of sand casting, and specifically refers to a metal mold casting for sand casting and a use method thereof. Background Art

[0002] At present, sand casting technology has been widely used in the field of handicraft production. However, when it comes to achieving mass production, there are some problems with the current traditional sand casting process. For example, when making handicrafts, traditional sand casting handicraft technology methods are generally used. The production volume of traditional sand casting is limited by technical personnel, site, and weather, and mass production is also greatly limited. Therefore, a new process is needed to improve work efficiency. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a metal mold casting for sand casting and a method of using the same, which effectively solves the problem of low output of the current sand casting production due to the limitations of technicians, sites and weather.

[0004] The technical solution adopted by the present invention is as follows: The present invention proposes a metal mold casting for sand casting, including a base, on which three groups of metal outer molds spliced ​​in a ring shape are plugged and connected, and at the same time, the top of the three groups of metal outer molds after splicing is provided with an opening, and an inner sand mold is plugged and pulled out of the base at the inner bottom of the metal outer mold. The inner sand mold is cast by three groups of inner core molds spliced ​​in a ring shape, and a product is made in the closed space composed of the base, the metal outer mold and the inner sand mold through the sand casting process.

[0005] Furthermore, both side walls of the metal outer mold and the inner core mold are respectively provided with engaging grooves and convex ridges, and the three groups of the metal outer molds and the three groups of the inner core molds are respectively spliced ​​and engaged through the engaging grooves and convex ridges.

[0006] Furthermore, handles 2 are provided at both ends of the bottom of the base, and handle 1 is provided on the outer wall of the metal outer mold.

[0007] Furthermore, the metal outer mold is made by using a metal mold process, and the inner sand mold is made of glass glue (the main component is sodium silicate (Na2O·mSiO2), also known as water glass or sodium silicate, and also contains acetic acid and organic silicone).

[0008] Furthermore, the metal outer mold is engraved with a shape, and the metal outer mold and the inner core sand mold are both divided into three equal parts.

[0009] A metal mold casting for sand casting and a method of using the same, specifically comprising:

[0010] 1. When casting products, aluminum is used as the outer mold of the product, and the outer mold metal mold is made of sand mold. The metal mold product is set in a ring shape and is evenly divided into three parts. The two side walls of the metal outer mold are respectively provided with fitting grooves and convex ridges for easy splicing and fitting. The metal mold is carefully polished to make it fit tightly and with high precision.

[0011] 2. When casting products, glass glue (the main component is sodium silicate (Na2O·mSiO2), also known as water glass or sodium silicate, and also contains acetic acid and organic silicone) is used to make the inner core sand mold of the product. When glass glue is used as a mold, it is not easy to deform and shrink;

[0012] 3. Engraving special patterns on metal mold aluminum products, the patterns are clear, exquisite, stable, long-lasting and durable;

[0013] 4. The casting method that combines metal mold making and sand casting can make full use of the advantages of easy shedding of sand materials required for inner molds and repeated use of metal molds to improve efficiency. The casting method that combines metal mold making and sand casting uses metal molds for casting, which are light, strong, durable and not easy to be destroyed.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows:

[0015] (1) Products cast by metal molds have uniform specifications, exquisite shapes, stability, durability and beauty, which can meet the aesthetic needs of users;

[0016] (2) The casting method that combines metal molds and sand casting is adopted, which improves the overall product quality and enhances the user experience;

[0017] (3) The casting method that combines metal mold making and sand casting has more than doubled labor efficiency, saved labor and space, reduced dependence on weather, and enabled large-scale mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a metal mold for sand casting proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the three-part structure of the metal outer mold of this embodiment;

[0020] Figure 3 This is a schematic exploded view of the structure of a metal mold for sand casting proposed by the present invention;

[0021] Figure 4 A cross-sectional view showing the overall use of a metal mold for sand casting proposed by the present invention;

[0022] Figure 5 It is a schematic diagram of the three-part structure of the inner core sand mold of this embodiment.

[0023] Among them, 1. base; 2. metal outer mold; 3. inner core mold; 4. fitting groove; 5. convex ridge; 6. handle one; 7. handle two; 8. product; 9. inner core sand mold.

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention proposes a metal mold for sand casting, including a base 1, on which three groups of metal outer molds 2 spliced ​​in a ring shape are plugged and connected, and at the same time, the top of the three groups of metal outer molds 2 after splicing is provided with an opening, and an inner sand mold 9 is plugged and pulled out of the base 1 at the inner bottom of the metal outer mold 2. The inner sand mold 9 is cast by three groups of inner core molds 3 spliced ​​in a ring shape, and a product 8 is manufactured by sand casting process in the closed space composed of the base 1, the metal outer mold 2 and the inner sand mold 9.

[0027] like Figure 2 As shown, both side walls of the metal outer mold 2 and the inner core mold 3 are respectively provided with an embedding groove 4 and a convex ridge 5, and the three groups of metal outer molds 2 and the three groups of inner core molds 3 are spliced ​​and embedded through the embedding grooves 4 and the convex ridges 5.

[0028] like Figure 1 and Figure 3 As shown, two ends of the bottom of the base 1 are provided with handles 7, and the outer wall of the metal outer mold 2 is provided with a handle 6.

[0029] The metal outer mold 2 is made of a metal mold process, and the inner sand mold 9 is set with glass glue (the main component is sodium silicate (Na2O·mSiO2), also known as water glass or water glass, and also contains acetic acid and organic silicone); the metal outer mold 2 is engraved with a shape, and the metal outer mold 2 and the inner core sand mold 3 are both divided into three equal parts.

[0030] During specific use, the three groups of inner core molds 3 are interlocked and spliced ​​with each other through the interlocking grooves 4 and the convex ridges 5 to produce an inner sand mold 9, and the inner sand mold 9 is dried in the sun, and then the dried inner sand mold 9 is inserted into the middle of the base 1, and the three groups of metal outer molds 2 are spliced ​​and inserted into the outer side of the inner sand mold 9 on the base 1 through the interlocking grooves 4 and the convex ridges 5, and then the product 8 is cast by a process combined with sand casting. After the casting is completed, the metal outer mold 2 is gradually removed by handle 6 to take out the product 8. The above is the entire use process of a metal mold for sand casting.

[0031] The present invention is realized by adopting the process flow of using metal mold for outer mold; the inner outer mold adopts glass glue (the main component is sodium silicate (Na2O·mSiO2), also known as water glass or sodium silicate, and also contains acetic acid and organic silicone) mold; the product production adopts the combination of metal mold and sand mold. Specifically, it includes the following parts:

[0032] (1) Use metal mold for external mold: Use metal mold instead of sand mold, which reduces the workload by half and increases the efficiency by more than double;

[0033] (2) Use glass glue mold to make the inner mold: Use glass glue mold to make the inner mold, which avoids the shrinkage and deformation of the traditional mold (metal or other materials) for making the inner mold, affecting the thickness, uniformity and aesthetics of the casting product;

[0034] (3) The intaglio shape on the metal mold is clearer, more stable and durable than the traditional sand mold intaglio shape, and is easy to maintain, making the cast product pattern clear, fine, high-precision and beautiful;

[0035] (4) The casting method that adopts the process flow combining metal mold making and sand casting can make full use of the advantages that the sand material required for the inner mold is easy to fall off and the metal mold can be repeatedly used to improve efficiency; the casting method that adopts the process flow combining metal mold making and sand casting uses metal mold casting, which has the advantages of being light, strong, durable, and not easy to be damaged.

[0036] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A metal mold for sand casting, comprising a base (1), characterized in that: The base (1) is plugged and connected with three groups of metal outer molds (2) spliced ​​in an annular shape, and the top of the three groups of metal outer molds (2) after splicing is provided with an opening. An inner sand mold (9) is plugged and connected with the base (1) at the bottom of the inner side of the metal outer mold (2). The inner sand mold (9) is cast by three groups of inner core molds (3) spliced ​​in an annular shape. A product (8) is manufactured in a closed space formed by the base (1), the metal outer mold (2) and the inner sand mold (9) through a sand casting process.

2. A metal mold for sand casting according to claim 1, characterized in that: The two side walls of the metal outer mold (2) and the inner core mold (3) are respectively provided with an embedding groove (4) and a convex ridge (5), and the three groups of the metal outer molds (2) and the three groups of the inner core molds (3) are respectively spliced ​​and embedded through the embedding grooves (4) and the convex ridges (5).

3. A metal mold for sand casting according to claim 2, characterized in that: Two handles (7) are provided at the two ends of the bottom of the base (1), and a handle (6) is provided on the outer wall of the metal outer mold (2).

4. A metal mold for sand casting according to claim 3, characterized in that: The metal outer mold (2) is made by using a metal mold process, and the inner sand mold (9) is made by using glass glue (the main component is sodium silicate (Na2O·mSiO2), also known as water glass or water glass, and also contains acetic acid and organic silicone), also known as water glass or water glass, and also contains acetic acid and organic silicone).

5. The metal mold for sand casting according to claim 4, characterized in that: The metal outer mold (2) is engraved with a shape, and the metal outer mold (2) and the inner core sand mold (3) are both arranged in three equal parts.

6. The metal mold casting for sand casting and the method of using the same according to claim 5, characterized in that: The outer mold is realized by using a metal mold process; the inner outer mold is made of glass glue (the main component is sodium silicate (Na2O·mSiO2), also known as water glass or sodium silicate, and also contains acetic acid and organic silicone) mold; the product production adopts a combination of metal mold and sand mold.

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