CN217474831U

CN217474831U - Sand bed for low-pressure casting

Info

Publication number: CN217474831U
Application number: CN202221119431.6U
Authority: CN
Inventors: 胡贵敏; 曹世斌; 黄金戈
Original assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Current assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-23
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to a special type casting forming technology field specifically is a sand bed for low pressure casting to solve in the low pressure casting production process because the molten metal that the leakproofness leads to inadequately between sand box and the bell leaks the problem of adhesion bell and sand box. The utility model discloses sand bed for low pressure casting mainly includes: the bottom plate, the riser, the compression beam, T type clamp bolt, the molding sand is constituteed, bottom plate central point puts and sets up the hole of dodging that supplies the stalk to pass, the bottom plate symmetry is seted up four logical grooves and is fixed in on the bell through bolted connection, the riser end to end encloses into closed grudging post and bottom plate welding as an organic whole, the molding sand is arranged in on the bottom plate in the grudging post, the casting mold is arranged in on the molding sand, T type clamp bolt one end is connected with the T type channel cooperation of bottom plate side, the through-hole that the other end was seted up on through the compression beam compresses tightly the sand mould, can realize flexible contact between sand box and bell, reduce the rigid contact area, reduce the plane degree requirement of contact surface, avoid metal liquid to leak adhesion bell and sand box.

Description

Sand bed for low-pressure casting

The technical field is as follows:

the utility model relates to a special type casting forming technology field specifically is a sand bed for low pressure casting, and especially sand mould low pressure casting is more suitable for.

Background art:

in the traditional technology, a sand mold low-pressure casting process casting mold is arranged above a furnace cover of a low-pressure casting furnace, because the contact area between the bottom surface of a lower sand box and the top surface of the furnace cover is large, the cyclic reuse flatness of the sand box cannot be ensured, the tightness between the bottom surface of the lower sand box and the top surface of the furnace cover is insufficient, molten metal leaks and adheres to the furnace cover and the sand box during pouring and pressurizing, in order to not influence the sealing effect of the next casting mold, the metal liquid leaked by adhesion must be manually removed, the labor intensity is high, and the production efficiency is low.

The invention content is as follows:

an object of the utility model is to provide a sand bed for low pressure casting, this sand bed can realize flexible contact between sand box and bell, reduces rigid contact area, reduces the plane degree requirement of contact surface, avoids metal liquid to leak adhesion bell and sand box, low in labor strength, and production efficiency is high.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a sand bed for low pressure casting, comprising a base plate 1, the riser 2, compress tightly crossbeam 3, T type clamp bolt 4, molding sand 5, wherein 1 central point of bottom plate puts and offers the hole 6 of dodging that supplies stalk 9 to pass, 1 symmetry of bottom plate is seted up on four logical grooves 7 are fixed in bell 10 through bolted connection, 2 end to end of riser enclose into closed grudging post and bottom plate 1 welding as an organic wholely, molding sand 5 is arranged in the closed grudging post on the bottom plate 1, casting mold 12 is arranged above the molding sand 5 in, 4 one ends of T type clamp bolt are connected with the T type channel 8 cooperation of 1 side of bottom plate, the other end compresses tightly casting mold 12 through the through-hole 11 of seting up on compressing tightly crossbeam 3.

The beneficial effects of the utility model are that:

1. the sand bed can realize flexible contact between the sand box and the furnace cover, reduce the rigid contact area, reduce the flatness requirement of the contact surface and avoid the leakage of molten metal liquid to adhere the furnace cover and the sand box during pouring and pressurizing.

2. The sand bed has the advantages of low manufacturing cost, simple structure and convenient operation, can reduce the labor intensity of workers and improve the production efficiency

Description of the drawings:

the drawings that constitute the present invention are intended to provide a further understanding of the invention, and the exemplary embodiments and descriptions thereof are intended to explain the invention without constituting an undue limitation on the invention. In the drawings:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the assembled low pressure casting furnace and the present invention;

FIG. 3 is a schematic view of the bottom plate structure of the present invention;

fig. 4 is a schematic view of the structure of the pressing beam of the present invention;

in the figure: 1. the casting mold comprises a bottom plate, 2 a vertical plate, 3 a pressing cross beam, 4 a T-shaped pressing bolt, 5 a molding sand, 6 a avoiding hole, 7 a through groove, 8 a T-shaped channel, 9 a liquid lifting pipe, 10 a low-pressure casting furnace cover, 11 a through hole, 12 a casting mold, 13 and a drag flask.

The specific implementation mode is as follows:

in the following, the technical solutions in the embodiments of the present invention are described completely and clearly with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

As shown in fig. 1 to 3, in a sand bed for low-pressure casting, firstly, an avoiding hole 6 through which a lift pipe 9 passes is formed in the center of a bottom plate 1, four through grooves 7 are symmetrically formed in the bottom plate 1 and fixed on a furnace cover 10 through bolt connection, a closed vertical frame is formed by connecting the vertical plates 2 end to end and welded with the bottom plate 1 into a whole, molding sand 5 is placed in the closed vertical frame on the bottom plate 1, a casting mold 12 is placed on the molding sand 5, finally, one end of a T-shaped compression bolt 4 is connected with a T-shaped channel 8 on the side surface of the bottom plate 1 in a matched manner, and the other end of the T-shaped compression bolt is screwed through a through hole 11 formed in a compression beam 3 to compress the casting mold 12.

It should be understood that the above detailed description of the technical solution of the present invention by means of preferred embodiments is illustrative and not restrictive. On reading the description of the present invention, those skilled in the art may modify the technical solutions described in the embodiments or may substitute part of the technical features of the embodiments, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sand bed for low pressure casting, which is characterized in that: the molding sand production device comprises a bottom plate (1), vertical plates (2), a compression beam (3), T-shaped compression bolts (4) and molding sand (5), wherein the bottom plate (1) is fixed on a low-pressure casting furnace cover (10) through bolt connection, the vertical plates (2) are connected end to form a closed vertical frame and are welded with the bottom plate (1) into a whole, the molding sand (5) is arranged in the closed vertical frame on the bottom plate (1), and the bottom plate (1) and the compression beam (3) are connected through the T-shaped compression bolts (4).

2. The sand bed for low pressure casting according to claim 1, wherein: the center of the bottom plate (1) is provided with an avoidance hole (6) for the lift pipe (9) to pass through, and the bottom plate (1) is symmetrically provided with four through grooves (7) for bolt connection.

3. The sand bed for low pressure casting as claimed in claim 1, wherein: two side surfaces of the bottom plate (1) are provided with T-shaped channels (8) which are connected with the T-shaped compression bolts in a matching way, and two ends of the compression cross beam (3) are provided with through holes (11) through which the T-shaped compression bolts pass.