Sand mold molding mold

Abstract

This invention discloses a sand mold forming die, relating to the field of mold equipment technology. The forming die can form a mold body from molding sand in one step, and two sets of mold bodies can be joined to form a complete sand mold. Specifically, it includes: a bottom mold, a top mold, and an interface plate. The bottom mold has a first shaping surface for forming the external shape of the mold body, and the top mold has a second shaping surface for forming the internal shape of the mold body. When the bottom mold and the top mold are joined, the first shaping surface and the second shaping surface are opposite each other. The interface plate is movably placed on the first shaping surface to form a connecting part on the outside of the mold body during molding. After the mold bodies are joined to form a sand mold, different sand molds can be connected in series through the connecting part. This invention can use a single type of mold to manufacture different types of mold bodies that can be joined together, greatly improving the preparation efficiency and economic benefits of sand molds.

Description

Technical Field

[0001] This invention relates to the field of mold equipment technology, and in particular to a sand mold forming mold. Background Technology

[0002] Sand casting is a casting method that produces castings in sand molds. Because the molding materials used in sand casting are inexpensive and readily available, and the mold making is simple, it can adapt to single-piece production, batch production, and mass production of castings. For a long time, it has been a basic process in casting production.

[0003] In sand casting, the preparation and use of sand molds are indispensable. When preparing sand molds using existing methods, one type of molding die can only produce a single type of sand mold body. To produce a complete sand mold, at least two types of sand mold molding dies are required. This is not only uneconomical, but the two molding dies also require high matching accuracy to ensure that the produced mold body can fit perfectly, which indirectly affects the finished product efficiency of sand molds. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a sand mold forming die.

[0005] A sand mold forming die can form a mold body from molding sand in one step, and two sets of mold bodies can be joined together to form a complete sand mold. The forming die specifically includes a bottom mold and a top mold. The bottom mold has a first shaping surface for forming the external shape of the mold body, and the top mold has a second shaping surface for forming the internal shape of the mold body. When the bottom mold and the top mold are joined together, the first shaping surface and the second shaping surface are opposite each other.

[0006] As a further optimization of the above scheme, the second shaping surface is divided into a first shaping area and a second shaping area, which are used to form a first cavity and a second cavity inside the mold body. When the two sets of mold bodies are closed, the first cavity on one set of mold bodies can be matched with the second cavity on the other set of mold bodies to form two sets of cavities of the same type.

[0007] As a further optimization of the above solution, a groove is provided on the second molding surface, and the groove is located between the first molding area and the second molding area. It is used to form a raised blocking part when the mold is formed, and the blocking part can abut against each other when the two sets of molds are closed to separate the two sets of cavities.

[0008] As a further optimization of the above scheme, two protruding ridges are arranged in parallel inside the groove, with the two ends of the protruding ridges abutting the edges of the first molding area and the second molding area respectively, so that the formed blocking part can be correspondingly formed with a groove, and when the two sets of molds are closed, the grooves of the two sets of molds can be matched one by one to form a flow channel.

[0009] As a further optimization of the above scheme, a first protrusion is provided at one end of the groove. The first protrusion connects to one of the convex ridges and extends to the edge of one side of the cover mold, so as to form a channel on one side when the mold body is formed, and the channel can form the riser of the sand mold when the two sets of mold bodies are closed.

[0010] As a further optimization of the above scheme, another convex ridge is provided with a molding column arranged perpendicular to the second molding surface, which is used to reserve a through hole on the mold body that can be used as a gate.

[0011] As a further optimization of the above scheme, it also includes an interface plate. The first molding surface is provided with a countersunk hole at the position corresponding to the molding column. The interface plate can be placed in the countersunk hole to form a corresponding connection part on the outside of the mold body during the molding process. When the bottom mold and the top mold are closed, the interface plate and the molding column are located on the same axis.

[0012] As a further optimization of the above solution, the interface plate has two specifications: concave and convex, to form a convex or concave connecting part, and the concave connecting part can be adapted to connect with the convex connecting part.

[0013] As a further optimization of the above scheme, when the bottom mold and the cover mold are closed, multiple sandblasting holes are formed at the joint on both sides.

[0014] The sand mold forming mold proposed in this invention allows a single type of mold to produce different types of mold bodies by changing different types of interface plates. The resulting mold bodies can be assembled to form a complete sand mold, which greatly improves the preparation efficiency and economic benefits of sand molds. Furthermore, the connecting part of the mold body formed by the interface plate can be used to connect the various sand molds in series after the mold bodies are assembled into a sand mold, thereby improving the casting efficiency of sand casting and further enhancing the practicality of the forming mold. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the mold closing state of a sand mold forming die proposed in this invention;

[0016] Figure 2 This is a schematic diagram of the mold structure for preparing a sand mold forming die according to the present invention;

[0017] Figure 3 This is a schematic diagram of the bottom mold structure of a sand mold forming die proposed in this invention;

[0018] Figure 4 This is a schematic diagram of the cover mold structure of a sand mold forming die proposed in this invention;

[0019] Figure 5 This is a schematic diagram of the interface plate structure of a sand mold forming die proposed in this invention;

[0020] Figure 6 This is a schematic diagram of the first form of the mold body prepared by the sand mold forming die proposed in this invention;

[0021] Figure 7 This is a schematic diagram of the second form of the mold body prepared by the sand mold forming die proposed in this invention;

[0022] Figure 8 This is a schematic diagram of the third form of the mold body prepared by the sand mold forming die proposed in this invention. Detailed Implementation

[0023] Example 1

[0024] The sand mold forming die proposed in this embodiment is mainly used to process molding sand into a mold body in one step, and the two mold bodies formed can be joined together to form a complete sand mold.

[0025] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the molding die specifically includes a bottom mold 1 and a top mold 2. When the bottom mold 1 and the top mold 2 are closed, an inner cavity is formed. Molding sand is processed and shaped inside the cavity. To facilitate the injection of molding sand, multiple sandblasting holes 11 are formed at the joint between the bottom mold 1 and the top mold 2. More specifically, the sandblasting holes 11 are distributed on both sides of the molding die and correspond one to one.

[0026] The bottom mold 1 has a first shaping surface 3 to form the external shape of the mold body, and the cover mold 2 has a second shaping surface 4 to form the internal shape of the mold body. When the bottom mold 1 and the cover mold 2 are closed, the first shaping surface 3 and the second shaping surface 4 are opposite each other.

[0027] The second styling surface 4 is divided into a first styling area 401 and a second styling area 402, and a groove 5 is provided on the second styling surface 4 to separate the first styling area 401 and the second styling area 402.

[0028] Two protruding ribs 6 are arranged in parallel inside the tank 5, with a certain interval between the two protruding ribs 6. The two ends of the protruding ribs 6 respectively abut the edges of the first shaping area 401 and the second shaping area 402.

[0029] One end of the groove 5 is provided with a first protrusion 7, which connects to one of the convex ribs 6 and extends to one side edge of the cover mold 2. Another convex rib 6 is provided with a shaping column 8 arranged perpendicular to the second shaping surface 4.

[0030] In addition, it includes an interface plate 10, which has two shapes: concave and convex, and can be freely replaced and installed on the bottom mold 1. The first molding surface 3 is provided with a countersunk hole 9 at the position corresponding to the molding column 8. The interface plate 10 is movably placed in the countersunk hole 9, and when the bottom mold 1 and the cover mold 2 are closed, the interface plate 10 and the molding column 8 are located on the same axis.

[0031] Example 2

[0032] The sand mold made from the sand mold forming die proposed in Example 1 is formed by the joining of two sets of mold bodies, as shown in the reference. Figure 2 The mold body 1 has a first cavity and a second cavity. As can be expected, the first cavity and the second cavity are formed by the first molding area 401 and the second molding area 402. When the two sets of mold bodies are closed, the first cavity on one set of mold bodies corresponds to the second cavity on the other set of mold bodies to form two sets of the same type of cavity. The two cavities serve as the casting cavities for the casting, and two identical castings can be cast at the same time.

[0033] The mold body is provided with a blocking part, which is formed by molding sand passing through the groove 5 on the second molding surface 4. When the two sets of mold bodies are closed, the blocking parts on the two sets of mold bodies abut against each other to separate the two sets of cavities.

[0034] Furthermore, to improve the fit between the two molds when they are closed, protrusions and slots can be provided on the groove 5 of the molding die, so that corresponding concave and convex areas can be formed on the blocking part. When the two sets of molds are closed, the protrusion on one set of molds can be correspondingly embedded in the concave part on the other set of molds.

[0035] The blocking part has a first channel and a second channel. The first channel and the second channel are formed by the molding sand from the protruding ribs 6 on the groove body 5. When the two sets of mold bodies are closed, the first channel cooperates to form the first gating, and the second channel cooperates to form the second gating. The first gating and the second gating connect the two sets of cavities. The first gating is at the bottom and serves as the entry channel for molten steel. The second gating is at the top and serves as the outflow channel after the molten steel fills the cavity.

[0036] The mold body has a third channel to form a riser when the two sets of mold bodies are closed. The third channel is formed by molding sand on the first protrusion 7.

[0037] In addition, the through holes on the mold body that serve as gates are formed by molding sand under the action of molding columns 8.

[0038] Example 3

[0039] This embodiment is a further extension based on embodiment 2. In order to improve the casting efficiency, multiple sand molds are often required to be cast simultaneously. Therefore, based on embodiment 2, the interface plate 10 is designed to form connecting parts of different shapes on the mold body. Specifically, in the two mold bodies that are closed, one mold body has a convex connecting part on the outside and the other mold body has a concave connecting part on the outside. When the mold bodies are closed to form a sand mold, different sand molds can be connected in series through the connecting parts.

[0040] When the convex interface plate is placed inside the countersunk hole 9, a mold body with a concave connecting portion is formed. This is the first form of the mold body. When the concave interface plate is placed inside the countersunk hole 9, a mold body with a convex connecting portion is formed. This is the second form of the mold body. (See reference...) Figure 6 and Figure 7 .

[0041] It is worth noting that, theoretically, sand molds can be connected indefinitely. However, due to the limitation on the amount of molten steel that can be poured at one time, the number of sand molds connected in series needs to be determined based on the actual situation. Therefore, one of the mold bodies in the last sand mold must not form a through hole during its molding process. This is the third form of the mold body. (Refer to...) Figure 8 To form this type of mold, simply do not place the interface plate 10 into the countersunk hole 9 when injecting molding sand into the molding mold.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sand mold forming die, which can form a mold body from molding sand in one step, and two sets of mold bodies can be joined to form a complete sand mold, characterized in that, The molding die specifically includes: a bottom mold (1) and a cover mold (2). The bottom mold (1) has a first shaping surface (3) for forming the external shape of the mold body, and the cover mold (2) has a second shaping surface (4) for forming the internal shape of the mold body. When the bottom mold (1) and the cover mold (2) are closed, the first shaping surface (3) and the second shaping surface (4) are opposite to each other. The second shaping surface (4) is divided into a first shaping area (401) and a second shaping area (402) to form a first cavity and a second cavity inside the mold body. When the two sets of mold bodies are closed, the first cavity on one set of mold bodies can be matched with the second cavity on the other set of mold bodies to form two sets of the same type of cavity. A groove (5) is provided on the second molding surface (4), and the groove (5) is located between the first molding area (401) and the second molding area (402) to form a protruding blocking part when the mold is formed, and the blocking part can abut against each other when the two sets of molds are closed to separate the two sets of cavities. Two protruding ribs (6) are arranged in parallel inside the groove (5). The two ends of the protruding ribs (6) abut against the edges of the first molding area (401) and the second molding area (402) respectively, so that the formed blocking part can be formed with corresponding slots. When the two sets of molds are closed, the slots of the two sets of molds can be matched one by one to form a flow channel. The groove (5) has a first protrusion (7) at one end. The first protrusion (7) connects to one of the convex ridges (6) and extends to the edge of the cover mold (2) to form a channel on one side when the mold body is formed. The channel can form the riser of the sand mold when the two sets of mold bodies are closed. Another convex ridge (6) is provided with a molding column (8) arranged perpendicular to the second molding surface (4) to reserve a through hole on the mold body that can be used as a gate; It also includes an interface plate (10). The first molding surface (3) has a countersunk hole (9) at a position corresponding to the molding column (8). The interface plate (10) can be placed in the countersunk hole (9) to form a corresponding connection part outside the mold body during the molding process. When the bottom mold (1) and the top mold (2) are closed, the interface plate (10) and the molding column (8) are located on the same axis. The interface plate (10) has two specifications: concave and convex, to form a convex or concave connecting part, and the concave connecting part and the convex connecting part can be adapted to each other.

2. The sand mold forming die according to claim 1, characterized in that, When the bottom mold (1) and the cover mold (2) are closed, multiple sandblasting holes (11) are formed at the joint on both sides.

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