CN213256989U

CN213256989U - Sand box for casting hub

Info

Publication number: CN213256989U
Application number: CN202021312292.XU
Authority: CN
Inventors: 王胜利; 赵清学; 刘凯; 卢坤; 张自强
Original assignee: Henan Jielang Precision Machine Tool Co ltd
Current assignee: Henan Jielang Precision Machine Tool Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-05-25
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a wheel hub casts sand box in wheel hub casting technical field, including last box and lower box, behind the compound die, go up and form between box and the lower box and hold the chamber with psammitolite matched with, go up and correspond respectively on box and the lower box and be equipped with and hold the communicating last connect the via hole in chamber and connect the via hole down, just it is coaxial with lower connect the via hole to go up connect the via hole, the lower terminal surface of going up the box is equipped with the annular groove, the up end of box is equipped with and annular groove matched with annular arch down. The utility model discloses be equipped with on last box and lower box with psammitolite matched with go up connect the via hole and connect the via hole down, not only realized the quick installation of psammitolite fixed, still accessible simultaneously with the psammitolite with the water pipe link to each other, realize the quick cooling of psammitolite.

Description

Sand box for casting hub

Technical Field

The utility model relates to a wheel hub casts technical field, concretely relates to sand box for wheel hub casting.

Background

The hub production comprises the steps of producing a sand core with the same hollow area by using precoated sand in advance, then placing the sand core into a casting sand box to obtain a hollow hub blank through gravity or low-pressure casting, then changing the resin material failure sand core in the sand core into sand, and pouring the sand out of the hub blank to obtain the hollow hub.

Because the heat conduction efficiency of molding sand is lower, it is long when causing the foundry goods shaping, has seriously restricted the production efficiency of foundry goods, and the psammitolite is fixed also comparatively troublesome in the sand box simultaneously, and the psammitolite is fixed inaccurate to lead to scrapping of foundry goods easily, therefore how to realize the quick cooling of psammitolite and fix just become the problem that the people waited for a long time to solve.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a sand box for hub casting.

The utility model discloses the technical scheme who adopts does:

the utility model provides a wheel hub foundry sand case, includes box and lower box, behind the compound die, go up and form between box and the lower box and hold the chamber with psammitolite matched with, go up the box and correspond respectively on the box down and be equipped with and hold the communicating last connect the via hole in chamber and connect the via hole down.

Preferably, the upper connecting through hole and the lower connecting through hole are coaxial.

Preferably, the lower end face of the upper box body is provided with an annular groove, and the upper end face of the lower box body is provided with an annular bulge matched with the annular groove.

Preferably, the inner sides of the upper box body and the lower box body are provided with sand coating layers.

Preferably, locking nuts matched with the sand cores are arranged on the outer sides of the upper box body and the lower box body.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses be equipped with on last box and lower box with psammitolite matched with go up connect the via hole and connect the via hole down, not only realized the quick installation of psammitolite fixed, still accessible simultaneously with the psammitolite with the water pipe link to each other, realize the quick cooling of psammitolite.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of a sand core;

FIG. 3 is a reference diagram of the present invention in use;

1 is last box, 2 is lower box, 3 is for covering the sand bed, 4 are the annular bulge, 5 are the psammitolite, 6 are for holding the chamber, 7 are last connect the through-hole, 8 are lower connect the through-hole, 9 are lock nut, 10 are the core, 11 are the sand bed, 12 are positioning screw, 13 are interface channel, 14 are the air guide hole, 15 are the annular connection piece, 16 are the sprue, 17 are the exhaust hole.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way. The unit module components, structures, mechanisms, sensors and other devices referred to in the following examples are all conventional and commercially available products unless otherwise specified.

Example (b): as shown in figure 1, the sand box for hub casting comprises an upper box body 1 and a lower box body 2, wherein the inner side of the upper box body 1 is provided with a sand coating layer 3, a sprue 16 and an exhaust hole 17 are formed in the upper box body 1, an annular groove (not shown) is formed in the lower end face of the upper box body 1, an annular bulge 4 matched with the annular groove is formed in the upper end face of the lower box body 2, and the upper box body 1 and the lower box body 2 are accurately matched in die assembly through the matching of the annular bulge 4 and the annular groove. After the die is closed, a containing cavity 6 matched with the sand core 5 is formed between the upper box body 1 and the lower box body 2, an upper connecting through hole 7 and a lower connecting through hole 8 which are communicated with the containing cavity 6 are correspondingly arranged on the upper box body 1 and the lower box body 2 respectively, and the upper connecting through hole 7 and the lower connecting through hole 8 are coaxially arranged.

In this embodiment, in order to realize the quick connection and fixation of the sand core 5 with the upper box body 1 and the lower box body 2, a locking nut 9 matched with the sand core 5 is arranged on the outer sides of the upper box body 1 and the lower box body 2.

As shown in fig. 2, a sand core for hub casting comprises a core body 10 with a hollow structure, wherein the core body 10 is a good thermal conductor, a sand layer 11 is arranged on the outer side of the core body 10, positioning screws 12 are arranged at two ends of the core body 10, one end of each positioning screw 12 penetrates through the sand layer 11, the positioning screws 12 are hollow to form a connecting channel 13 communicated with the inner cavity of the core body 10, air vents 14 and annular connecting pieces 15 are arranged on the side walls of the core body 10, air in the sand layer 11 enters the inner cavity of the core body 10 through the air vents 14, and the annular connecting pieces 15 are convenient for connecting the core body 10 with the sand layer 11 and also for heat transfer between a casting and a sand core 5.

The operation and use method of the sand box comprises the following steps:

as shown in fig. 3, firstly, a sand core 5 is placed in a lower box body 2, one end of a positioning screw 12 at the bottom end of the sand core 5 penetrates through a lower connecting through hole 8, then a locking nut 9 is screwed on the positioning screw 12, then an upper box body 1 is sleeved on the sand core 5, one end of the positioning screw 12 at the top end of the sand core 5 penetrates through an upper connecting through hole 7, and then the locking nut 9 is screwed to complete the fixation of the sand core 5; and liquid aluminum alloy is injected into a cavity between the sand core 5 and the upper box body 1 and the lower box body 2 through a sprue 16, and then cooling water is injected into an inner cavity of the core body 10 by connecting the positioning screw 12 with a water pipe, so that the sand core 5 and the casting are rapidly cooled.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a sand box for hub casting, includes box and lower box, behind the compound die, go up and form between box and the lower box and hold chamber, its characterized in that with psammitolite matched with: and an upper connecting through hole and a lower connecting through hole which are communicated with the containing cavity are correspondingly arranged on the upper box body and the lower box body respectively.

2. The sand box for hub casting according to claim 1, wherein: the upper connecting through hole and the lower connecting through hole are coaxial.

3. The sand box for hub casting according to claim 1, wherein: the lower end face of the upper box body is provided with an annular groove, and the upper end face of the lower box body is provided with an annular bulge matched with the annular groove.

4. The sand box for hub casting according to claim 1, wherein: and the inner sides of the upper box body and the lower box body are provided with sand-coated layers.

5. The sand box for hub casting according to claim 1, wherein: and locking nuts matched with the sand cores are arranged on the outer sides of the upper box body and the lower box body.