CN219151496U - Vacuumizing sand box suitable for lost foam casting - Google Patents

Abstract

The utility model discloses a vacuum pumping sand box suitable for lost foam casting, which is provided with a square sand box body, wherein a square top cover can be detachably arranged above the sand box body, a square base is detachably arranged below the sand box body, side negative pressure air suction bins are respectively arranged on four sides of an inner cavity of the sand box body, corner negative pressure air suction bins are arranged between two adjacent side negative pressure air suction bins, the four side negative pressure air suction bins and the four corner negative pressure air suction bins are hermetically surrounded to form a negative pressure air suction bin assembly with the same height as the sand box body, a pouring gate is arranged at the central position of the top cover, upper negative pressure air suction pipelines symmetrically distributed on two sides of the pouring gate are also arranged on the top cover, two lower negative pressure air suction pipelines corresponding to the positions of the upper negative pressure air suction pipelines are arranged on the base, and two side negative pressure air suction pipelines are respectively arranged on four sides of the sand box body. The air in the sand box can be completely pumped out, so that the vacuum degree in the sand box is ensured, and the quality of cast products is further ensured.

Description

Vacuumizing sand box suitable for lost foam casting

Technical Field

The utility model relates to the technical field of sand boxes, in particular to a vacuum-pumping sand box suitable for lost foam casting.

Background

With the continuous development of society, the foundry industry has rapidly developed. In the casting industry, people usually adopt lost foam to perform casting processing, so that products with high dimensional accuracy and good appearance quality can be processed. However, the existing sand box for lost foam casting still has some defects in structural design, such as: the negative pressure pumping chambers in the sand box inner cavity are unevenly distributed, and the negative pressure pumping pipelines matched with the negative pressure pumping chambers only can temporarily pump partial areas in the sand box inner cavity into vacuum, and because the air in the sand box inner cavity is mutually circulated, the areas which are temporarily in vacuum can be quickly occupied by the air in other areas, and finally, the cast parts cast out have the defects of sand holes and the like, and most of the defects cannot be remedied and can be generally only re-cast.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the problems in the prior art, the vacuum pumping sand box suitable for lost foam casting is provided, air in the sand box can be comprehensively pumped out, the vacuum degree in the sand box is ensured, and the quality of cast products is further ensured.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a vacuum flask suitable for lost foam casting, has square sand box body, square sand box body's top can be dismantled and is provided with square top cap, and square sand box body's below can be dismantled and be provided with square base, is provided with side negative pressure on four sides of square sand box body inner chamber respectively and draws air storehouse, is provided with corner negative pressure between two adjacent side negative pressure and draws air storehouse, four side negative pressure and draws air storehouse and four corner negative pressure and seal around forming the negative pressure that is equal high with square sand box body and draw air storehouse assembly, square top cap's central point department is provided with the pouring gate, still is provided with the last negative pressure pipeline of drawing air of symmetric distribution in the pouring gate both sides on the square top cap, be provided with two lower negative pressure pipeline of drawing air corresponding with last negative pressure pipeline position on square base respectively, be provided with two side negative pressure pipeline of drawing air on four sides of square sand box body.

Further, in the above technical scheme, the specifications of the four side negative pressure air extraction bins are the same, the specifications of the four corner negative pressure air extraction bins are the same, and the sectional area of the side negative pressure air extraction bin is larger than that of the corner negative pressure air extraction bin, so that the overall economic utilization efficiency of the sand box can be improved through the structural design.

Further, in the above technical scheme, the bottom of square base is provided with the supporting legs, the height dimension of supporting legs is greater than down negative pressure exhaust pipe stretches out in square base's outer size, and such structural design can avoid down negative pressure exhaust pipe and external part to take place to interfere the phenomenon, guarantees the normal work of negative pressure exhaust pipe down.

Further, in the above technical scheme, the upper edge of the square sand box body and the lower edge of the square top cover are provided with the first sealing ring in a matched manner, and the structural design can prevent external air from entering the inner cavity of the sand box.

Further, in the above technical scheme, the lower edge of the square sand box body and the upper edge of the square base are provided with the second sealing ring in a matched manner, and the structural design can prevent external air from entering the inner cavity of the sand box.

Further, in the above technical scheme, the square sand box body, the square top cover and the square base are provided with the hanging rings which are convenient for the external lifting equipment to lift, and the structural design can facilitate the assembly and disassembly among the square sand box body, the square top cover and the square base by an operator.

The beneficial effects of the utility model are as follows: the vacuumizing sand box suitable for lost foam casting provided by the utility model has the advantages that the structure is simple, the design is reasonable, the air in the sand box can be comprehensively pumped out, the vacuum degree in the sand box is ensured, and the quality of a cast product is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of a square flask body.

The reference numerals in the drawings are: 1. square sand box body 2, square top cap, 3, square base, 4, side negative pressure bleed storehouse, 5, corner negative pressure bleed storehouse, 6, the gate, 7, go up negative pressure bleed pipeline, 8, lower negative pressure bleed pipeline, 9, side negative pressure bleed pipeline, 10, supporting legs.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "one side", "the other side", "the two sides", "the middle", "the upper end", "the lower end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, the vacuum flask suitable for lost foam casting of the utility model is provided with a square flask body 1, a square top cover 2 is detachably arranged above the square flask body 1, a square base 3 is detachably arranged below the square flask body 1, side negative pressure air suction bins 4 are respectively arranged on four sides of an inner cavity of the square flask body 1, corner negative pressure air suction bins 5 are arranged between two adjacent side negative pressure air suction bins 4, the four side negative pressure air suction bins 4 and the four corner negative pressure air suction bins 5 are hermetically surrounded to form a negative pressure air suction bin assembly with the same height as the square flask body 1, a pouring gate 6 is arranged at the central position of the square top cover 2, two lower negative pressure air suction pipelines 8 symmetrically distributed on two sides of the pouring gate 6 are also arranged on the square base 3, and two side negative pressure air suction pipelines 9 are respectively arranged on four sides of the square flask body 1.

The specifications of the four side negative pressure air suction bins 4 are the same, the specifications of the four corner negative pressure air suction bins 5 are the same, the sectional area of the side negative pressure air suction bins 4 is larger than that of the corner negative pressure air suction bins 5, and the overall economic utilization efficiency of the sand box can be improved through the structural design. The bottom of square base 3 is provided with supporting legs 10, and the high size of supporting legs 10 is greater than down negative pressure pipeline 8 and stretches out the size outside square base 3, and this kind of structural design can avoid down negative pressure pipeline 8 and external part to take place to interfere the phenomenon, guarantees down negative pressure pipeline 8's normal work. The upper edge of square sand box body 1 is provided with first sealing washer with the lower limb of square top cap 2 is supporting, and this kind of structural design can guarantee the leakproofness of square sand box body 1 and square top cap 2 both assembly regions, avoids outside air to enter into in the inner chamber of sand box. The lower edge of the square sand box body 1 and the upper edge of the square base 3 are provided with the second sealing ring in a matched mode, and the tightness of the assembly areas of the square sand box body 1 and the square base 3 can be guaranteed through the structural design, and external air is prevented from entering the inner cavity of the sand box. The square sand box body 1, the square top cover 2 and the square base 3 are respectively provided with a hanging ring which is convenient for the lifting of external lifting equipment, and the structural design can facilitate the assembly and the disassembly of the square sand box body 1, the square top cover 2 and the square base 3 by operators.

The operation principle of the vacuumizing sand box suitable for lost foam casting is as follows: the assembly process of the sand box is as follows: firstly, an operator installs a negative pressure pumping bin assembly in an inner cavity of a square sand box body 1 in advance, then the operator hooks a hanging ring on a square base 3 by using a hook on external lifting equipment, lifts and transports the square base 3 to the proper horizontal ground, then the operator hooks the hanging ring on the square sand box body 1 by using the hook on the external lifting equipment, lifts and transports the square sand box body 1 to the upper part of the square base 3, then the operator hooks the hanging ring on a square top cover 2 by using the hook on the external lifting equipment, lifts and transports the square top cover 2 to the upper part of the square sand box body 1, and finally an upper negative pressure pumping pipeline 7, a lower negative pressure pumping pipeline 8 and a side negative pressure pumping pipeline 9 are respectively installed on the square top cover 2, the square base 3 and the square sand box body 1, so as to finish the assembly of the square sand box. (2) the disassembly process of the sand box is as follows: firstly, an operator dismantles an upper negative pressure air suction pipeline 7, a lower negative pressure air suction pipeline 8 and a side negative pressure air suction pipeline 9 from a square top cover 2, a square base 3 and a square sand box body 1 respectively, then the operator uses a hook on an external lifting device to hook a hanging ring on the square top cover 2 and lift and transport the square top cover 2 to a proper position, then the operator uses the hook on the external lifting device to hook the hanging ring on the square sand box body 1 and lift and transport the square sand box body 1 to the proper position, then the operator uses the hook on the external lifting device to hook the hanging ring on the square base 3 and lift and transport the square base 3 to the proper position, and finally the operator dismantles the negative pressure air suction bin assembly from the inner cavity of the square sand box body 1 to finish the dismantlement of the sand box. (3) the vacuumizing process of the sand box is as follows: the upper negative pressure air suction pipeline 7, the lower negative pressure air suction pipeline 8 and the side negative pressure air suction pipeline 9 are respectively connected with external negative pressure through pipelines, so that air in the inner cavity of the sand box is sucked out, and a complete vacuum state is maintained.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. Vacuum flask suitable for lost foam casting, characterized by: the square sand box is characterized by comprising a square sand box body (1), a square top cover (2) is detachably arranged above the square sand box body (1), a square base (3) is detachably arranged below the square sand box body (1), side negative pressure air suction cabins (4) are respectively arranged on four sides of an inner cavity of the square sand box body (1), corner negative pressure air suction cabins (5) are arranged between two adjacent side negative pressure air suction cabins (4), the four side negative pressure air suction cabins (4) and the four corner negative pressure air suction cabins (5) are sealed around a negative pressure air suction cabin assembly which is formed to be equal to the square sand box body (1), a pouring gate (6) is arranged at the central position of the square top cover (2), two lower negative pressure air suction pipelines (8) which are symmetrically distributed on two sides of the pouring gate (6) are respectively arranged on the square base (3), and two side negative pressure air suction pipelines (9) are respectively arranged on four sides of the square sand box body (1).

2. The evacuated flask suitable for lost foam casting according to claim 1, wherein: the specifications of the four side negative pressure air suction bins (4) are the same, the specifications of the four corner negative pressure air suction bins (5) are the same, and the sectional area of the side negative pressure air suction bins (4) is larger than the sectional area of the corner negative pressure air suction bins (5).

3. The evacuated flask suitable for lost foam casting according to claim 1, wherein: the bottom of square base (3) is provided with supporting legs (10), the high size of supporting legs (10) is greater than lower negative pressure exhaust pipe (8) stretches out in the outside size of square base (3).

4. The evacuated flask suitable for lost foam casting according to claim 1, wherein: the upper edge of the square sand box body (1) and the lower edge of the square top cover (2) are provided with a first sealing ring in a matching way.

5. The evacuated flask suitable for lost foam casting according to claim 1, wherein: the lower edge of the square sand box body (1) and the upper edge of the square base (3) are provided with a second sealing ring in a matching way.

6. The evacuated flask suitable for lost foam casting according to claim 1, wherein: the square sand box is characterized in that the square sand box body (1), the square top cover (2) and the square base (3) are respectively provided with a hanging ring which is convenient for the lifting of external lifting equipment.

Images