CN217018470U

CN217018470U - Sand mold structure capable of saving sand material

Info

Publication number: CN217018470U
Application number: CN202123347539.9U
Authority: CN
Inventors: 陈凡; 董勇; 陈寅恪
Original assignee: Ningguo Kebor Intelligent Machine Tool Co ltd
Current assignee: Ningguo Kebor Intelligent Machine Tool Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-22
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a sand mould structure capable of saving sand materials, which comprises: sand mould and blast pipe, the inside die cavity that is equipped with of sand mould, be equipped with pouring basin and exhaust hole on the die cavity, blast pipe one end with exhaust hole intercommunication just bonds on the sand mould through the hot melt adhesive. Through the sand mold structure capable of saving the sand material in the optimized design, an exhaust pipeline part formed by mold closing is omitted, and the using amount of precoated sand is greatly reduced, so that the cost is saved, and the problem that molten iron is easy to block during molten iron casting due to loose mold closing caused by the existence of the exhaust pipeline is solved; the exhaust pipe is connected with the exhaust hole, so that the cavity, the exhaust pipe and the pouring cup are communicated, and casting is realized.

Description

Sand mold structure capable of saving sand material

Technical Field

The utility model relates to the technical field of sand mold structures, in particular to a sand mold structure capable of saving sand materials.

Background

Sand casting is a widely used form of casting. The method comprises the steps of manufacturing a sand mould in advance, filling high-temperature resistant particles into a gap between the sand mould and a sand box after the sand mould is placed into the sand box, supporting the side wall of the sand mould, and then pouring molten metal into the sand mould. An exhaust pipeline and a pouring cup are usually formed on a cavity of the sand mould, and the cavity is communicated with the exhaust pipeline and the pouring cup, so that smooth casting is realized. However, in order to form the exhaust pipe, a large amount of precoated sand needs to be used; the cost of the precoated sand is high, which causes high production cost; and the precoated sand also contains components such as resin, additives and the like, so that the precoated sand is not easy to recycle, the recycling cost is improved, and the waste of the precoated sand and the environmental pollution are easily caused. In addition, during casting, the problems of untight mold closing and easy molten iron leakage often exist; a large amount of molten iron can be wasted, the temperature of the molten iron is high, and the precoated sand model is prone to collapse after liquid leakage, so that the production and the qualification rate of castings are affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the background art, the utility model provides a sand mold structure capable of saving sand.

The utility model provides a sand mold structure capable of saving sand materials, which comprises: sand mould and blast pipe, the inside die cavity that is equipped with of sand mould, be equipped with runner cup and exhaust hole on the die cavity, blast pipe one end with exhaust hole intercommunication just bonds on the sand mould through the hot melt adhesive.

Preferably, the sand mould comprises a first mould body and a second mould body, the first mould body and the second mould body being assembled to form the mould cavity.

Preferably, the pouring cup is positioned at the top of the cavity and is formed by a first die body and a second die body together.

Preferably, the vent holes are located on the top of the sand mould.

Preferably, the exhaust pipe is arranged vertically, and the upper end of the exhaust pipe and the upper end of the pouring cup are positioned on the same horizontal plane.

Preferably, the exhaust pipe is in sealing fit with the sand mold through hot melt glue.

Preferably, the periphery of the joint of the exhaust pipe and the sand mold is coated with a high-temperature-resistant adhesive.

In the utility model, the sand mold structure for saving sand materials comprises: sand mould and blast pipe, the inside die cavity that is equipped with of sand mould, be equipped with pouring basin and exhaust hole on the die cavity, blast pipe one end with exhaust hole intercommunication just bonds on the sand mould through the hot melt adhesive. Through the sand mold structure which is designed optimally and saves sand materials, an exhaust pipeline part formed by mold closing is saved, and the using amount of precoated sand is greatly reduced, so that the cost is saved, and the problem that molten iron is easy to block during molten iron casting due to the fact that the mold closing is not tight because of the existence of the exhaust pipeline is avoided; the exhaust pipe is connected with the exhaust hole, so that the cavity, the exhaust pipe and the pouring cup are communicated, and casting is realized.

Drawings

Fig. 1 is a schematic structural diagram of a sand mold structure for saving sand materials according to the present invention.

Fig. 2 is a structural schematic diagram of a sand mold structure for saving sand materials during pouring, which is provided by the utility model.

Detailed Description

As shown in fig. 1 and 2, fig. 1 is a schematic structural diagram of a sand mold structure for saving sand according to the present invention, and fig. 2 is a schematic structural diagram of a sand mold structure for saving sand according to the present invention during pouring.

Referring to fig. 1 and 2, the sand mold structure for saving sand proposed by the present invention comprises: sand mould and blast pipe 5, the inside die cavity that is equipped with of sand mould, be equipped with pouring basin 4 and exhaust hole 3 on the die cavity, 5 one end of blast pipe with exhaust hole 3 intercommunication just bonds on the sand mould through the hot melt adhesive.

In the concrete casting process of the sand mould structure of saving sand material of this embodiment, at first, put into the sand box behind the sand mould compound die, then install the blast pipe in exhaust hole department, pack the gravel to the sand box after that for blast pipe upper end and pouring basin upper end expose, pour into a mould to the die cavity through the pouring basin at last.

In this embodiment, the sand mould structure of sand material of saving that proposes includes: sand mould and blast pipe, the inside die cavity that is equipped with of sand mould, be equipped with pouring basin and exhaust hole on the die cavity, blast pipe one end with exhaust hole intercommunication just bonds on the sand mould through the hot melt adhesive. Through the sand mold structure capable of saving the sand material in the optimized design, an exhaust pipeline part formed by mold closing is omitted, and the using amount of precoated sand is greatly reduced, so that the cost is saved, and the problem that molten iron is easy to block during molten iron casting due to loose mold closing caused by the existence of the exhaust pipeline is solved; the exhaust pipe is connected with the exhaust hole, so that the cavity, the exhaust pipe and the pouring cup are communicated, and casting is realized.

In the specific embodiment, the sand mould comprises a first mould body 1 and a second mould body 2, and the first mould body 1 and the second mould body 2 are assembled to form the cavity. In order to facilitate the processing of the pouring cup, the pouring cup 4 is positioned at the top of the cavity and is formed by the first die body 1 and the second die body 2 together.

Furthermore, the vent holes 3 are located at the top of the sand mould. Further, the exhaust pipe 5 is vertically arranged, and the upper end of the exhaust pipe 5 and the upper end of the pouring cup 4 are located on the same horizontal plane.

The utility model omits an exhaust pipe part formed by die assembly, can greatly reduce the using amount of precoated sand, thereby saving the cost; the exhaust pipe is connected with the exhaust hole, so that the cavity, the exhaust pipe and the pouring cup are communicated, and casting is realized; when setting up the blast pipe and can avoiding the casting molten iron, the molten iron problem of shutoff easily realizes that the casting is smooth and easy.

Because the exhaust pipe part formed by die assembly is omitted, the parts needing to be connected can be increased, and the risk of molten iron leakage is increased; can adopt glue to bond each junction sealed, but glue bonding solidification is consuming time longer for conventional casting, can reduce machining efficiency, and the material of tectorial membrane sand shell mould, blast pipe is different, and its connection fastness of glue is relatively poor for conventional casting, and the junction stability is not high, easily causes the problem that the junction leaks the molten iron.

In the specific installation mode that the exhaust pipe is fixed at the exhaust hole, the exhaust pipe 5 is in sealing fit with the sand mold through hot melt adhesive; the characteristics of solid state at low temperature, liquid state at high temperature, high bonding strength and high bonding speed are utilized to realize the rapid bonding and sealing of the connecting part and the die assembly gap, thereby shortening the working time, and improving the working efficiency, the connection fastness and the stability of the connecting part. In addition, the hot melt adhesive does not contain a solvent and moisture, so that the problem that the solvent or moisture in the glue is easy to cause casting gas generation when the conventional glue for casting is used for casting can be avoided.

Further, the periphery of the joint of the exhaust pipe 5 and the sand mold is coated with a high-temperature-resistant adhesive 6; the hot melt adhesive which is converted into liquid can be sealed under the high-temperature resistant adhesive layer during casting, so that the problem of molten iron leakage is solved.

The cavity has various shapes, such as rectangle, circle, etc., or irregular shape according to the shape of the template. One or more exhaust pipes and exhaust holes can be arranged according to the shape of the cavity, so that the exhaust performance of the shell mould is improved, the generation of the defects of the large air holes in the casting is reduced, and the product percent of pass is improved. The vent hole can be arranged at a relatively higher position of the cavity, so that the gas can be conveniently discharged. The exhaust pipe may be made of a high temperature resistant ceramic material.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a save sand mould structure of sand material which characterized in that includes: sand mould and blast pipe (5), the inside die cavity that is equipped with of sand mould, be equipped with runner cup (4) and exhaust hole (3) on the die cavity, blast pipe (5) one end with exhaust hole (3) intercommunication just bonds on the sand mould through the hot melt adhesive.

2. A sand mould structure for saving sand material according to claim 1, characterised in that the sand mould comprises a first mould body (1) and a second mould body (2), said first mould body (1) and said second mould body (2) closing together to form said mould cavity.

3. A sand mould structure for saving sand according to claim 2, characterised in that said pouring cup (4) is located at the top of said mould cavity and is formed jointly by the first mould body (1) and the second mould body (2).

4. A sand mould structure for saving sand according to any of the claims 1-3, characterized in that the venting holes (3) are located at the top of the sand mould.

5. A sand mould structure for saving sand materials according to claim 1, wherein the exhaust pipe (5) is arranged vertically, and the upper end of the exhaust pipe (5) and the upper end of the pouring cup (4) are positioned on the same horizontal plane.

6. A sand mould structure for saving sand material according to claim 1, characterised in that the exhaust pipe (5) is in sealing engagement with the sand mould by means of hot melt glue.

7. A sand mould structure for saving sand materials according to claim 6, wherein the periphery of the joint of the exhaust pipe (5) and the sand mould is coated with a high temperature resistant adhesive (6).