CN219503675U

CN219503675U - Sand mould casting device

Info

Publication number: CN219503675U
Application number: CN202320957570.4U
Authority: CN
Inventors: 张执军; 韩增加; 吕生田
Original assignee: Jinan Xuyu Forging And Casting Co ltd
Current assignee: Jinan Xuyu Forging And Casting Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-08-11
Anticipated expiration: 2033-04-20

Abstract

The utility model discloses a sand mould casting device, which comprises a casting mould shell, wherein an inner pouring gate communicated with an inner cavity of the casting mould shell is arranged on the casting mould shell, the other end of the inner pouring gate is connected with a pouring cup through a feeding cap and a cross pouring gate, the cross pouring gate sequentially comprises an upper filtering section, a middle filtering section and a lower filtering section along the flowing direction of molten iron, a plurality of teeth are arranged on the inner top wall of the upper filtering section and the inner bottom wall of the lower filtering section, the heights of the teeth are gradually increased along the flowing direction of molten iron, an arc-shaped filter screen is arranged at one side of each tooth tip part deviating from the flowing direction of molten iron, and a middle filter screen is arranged in the middle of the middle filtering section; through establishing upper portion section of straining, middle part section of straining and lower part section of straining with the cross gate in proper order, upper portion strain the inside roof of section and lower part and strain and establish a plurality of teeth on the inside diapire of section, middle part strain the section middle part and establish the middle filter screen to can get rid of the different impurity that each section contains about the molten iron comprehensively, improve the effect of getting rid of the impurity, improve the whole purity degree of molten iron.

Description

Sand mould casting device

Technical Field

The utility model belongs to the technical field of casting, and particularly relates to a sand mould casting device.

Background

The sand mould is a mould for manufacturing molding sand according to the outline of a part, and in the manufacturing process of the mould, holes and exhaust holes for casting metal into the mould are required to be reserved, so that a casting system is synthesized. In the prior art, through searching, the utility model patent with the Chinese patent publication number of CN207127215U discloses a sand mould casting device, which mainly comprises a pouring cup (a), wherein the pouring cup (a) is connected with a runner (b), the other end of the runner (b) is connected with an inner runner (e) on a casting mould shell (d) through a feeding cap (c), the upper side surface of the runner (b) is a zigzag tooth row, the convex surface of teeth of the tooth row is perpendicular to the flowing direction of molten iron, and the other side of the casting mould shell (d) is provided with an exhaust cap (f).

In the prior art, when the sand mould similar to the technical scheme is used for pouring, molten iron is poured into a pouring cup, the molten iron sequentially flows through a runner and a feeding cap from the pouring cup and finally enters a casting mould shell, and impurities floating on the molten iron are blocked by tooth rows on the molten iron in the process of the molten iron passing through the runner, so that the purity of the molten iron entering the casting mould shell is improved, and the quality of cast parts is improved.

However, the prior art scheme finds that the place to be improved still exists in the implementation process: and (3) a step of: the tooth row is arranged above the transverse runner, so that impurities floating on the upper part of molten iron can be blocked to a certain extent, but the blocked impurities possibly flow forwards along the molten iron again along with continuous flow scouring of the molten iron, and the effect of removing the impurities by the molten iron is reduced; and II: only set up the tooth row above the runner, can only float the impurity that floats in the molten iron top and clear away to a certain extent, and mix in the molten iron middle part and deposit the impurity of molten iron bottom still can not get rid of, and the purity degree of molten iron still has the space that remains to improve.

Disclosure of Invention

In view of the defects and drawbacks of the prior art, the present utility model aims to provide a sand mold casting device, which solves the problems that the sand mold casting device in the prior art is provided with a tooth row above a runner, impurities floating in molten iron can be blocked to a certain extent, the blocked impurities possibly flow forward along the molten iron again along with continuous flow flushing of the molten iron, the effect of removing the impurities of the molten iron is reduced, and the impurity floating above the molten iron can only be removed to a certain extent only by arranging the tooth row above the runner, the impurities mixed in the middle of the molten iron and deposited at the bottom of the molten iron can not be removed, and the purity of the molten iron still has a space to be improved.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a sand mould casting device, includes the mould casing, is equipped with on the mould casing rather than the communicating ingate of inner chamber, the ingate other end is passed through the feeding and is raised and the ingate is connected with the pouring basin, the ingate include in proper order along the direction of molten iron flow and strain section, middle part strain section and lower part and strain section, upper portion strain section inside roof and lower part and strain and be equipped with a plurality of teeth on the inside diapire of section, the height of tooth increase gradually along the direction of molten iron flow, every tooth tip is equipped with an arc filter screen in one side that deviates from molten iron flow direction, middle part strain section middle part be equipped with one and have the well filter screen of one section distance apart from roof and diapire.

As a further improvement of the present utility model, the middle filter screen is formed in an arc shape protruding to one side of the molten iron flowing direction.

As a further improvement of the utility model, the connecting port of the ingate and the casting mould shell is arranged at the top of the cavity of the casting mould shell.

As a further improvement of the utility model, the bottoms of the ingate and the cross runner are gradually inclined downwards along the flowing direction of molten iron.

As a further improvement of the utility model, the feeding cap is detachably connected with the ingate.

As a further improvement of the utility model, a first connecting plate is arranged on the feeding cap, a second connecting plate is arranged on the ingate, and the first connecting plate and the second connecting plate are connected through bolts.

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

1. the horizontal pouring channel is sequentially arranged into an upper filtering section, a middle filtering section and a lower filtering section along the flowing direction of molten iron, a plurality of teeth are arranged on the inner top wall of the upper filtering section and the inner bottom wall of the lower filtering section, a middle filter screen which is at a certain distance from the top wall and the bottom wall is arranged in the middle of the middle filtering section, the teeth of the upper filtering section block impurities floating on the upper part of molten iron, the middle filter screen of the middle filtering section block impurities mixed in the molten iron, the teeth at the bottom of the lower filtering section block impurities deposited on the lower part of molten iron, so that different impurities contained in the upper, middle and lower sections of molten iron can be comprehensively removed, the effect of removing the impurities is improved, the overall purity of the molten iron is improved, the heights of the teeth are gradually increased along the flowing direction of the molten iron, the tips of the teeth are provided with arc filter screens, the arc filter screens can receive the impurities blocked by the teeth, the impurities are prevented from being reentered into the molten iron, the gradient of the molten iron is increased along the flowing direction of the molten iron, the teeth are gradually increased, the gradient sieving effect is formed; in addition, the upper filtering section, the middle filtering section and the lower filtering section sequentially perform upper impurity removal, middle impurity removal and lower impurity removal on molten iron in the flowing process of the molten iron, so that impurity removal structures in all stages are sequentially staggered, and the liquidity of the molten iron is ensured.

2. Through setting the middle filter screen to the convex arc in molten iron flow direction one side, the arc is convenient for hold impurity in the middle filter screen of arc, avoids impurity to continue to flow along middle filter screen both sides low reaches.

3. Through setting up the connector of ingate and mould casing at the top of mould casing inner chamber, not only better assurance mould casing inner chamber can be filled up, can prevent the molten iron backward flow moreover.

4. The bottoms of the inner pouring gate and the cross pouring gate are gradually inclined downwards along the flowing direction of molten iron, so that the molten iron can flow downwards conveniently, and the molten iron can flow into the casting mould shell smoothly.

5. The feeding cap and the ingate are detachably connected, so that the feeding cap and the ingate can be detached, and the feeding cap and the ingate are convenient to reversely wash and clean.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the overall structure of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic cross-sectional view of a runner;

FIG. 5 is an enlarged view of FIG. 4 at B;

in the figure: 1. a mold housing; 2. an inner runner; 3. feeding caps; 4. a cross gate; 41. an upper filter section; 42. a middle filtering section; 43. a lower filter section; 5. a pouring cup; 6. teeth; 7. arc filter screen; 8. a middle filter screen; 9. a first connection plate; 10. and a second connecting plate.

Detailed Description

The utility model is described in further detail below with reference to fig. 2-4. For the sake of clarity, only the structures related to the utility model are shown in the drawings.

For convenience of description, the coordinate system is defined as shown in fig. 2, and the left-right direction is a transverse direction, the front-rear direction is a longitudinal direction, and the up-down direction is a vertical direction.

The embodiment of the utility model discloses a sand mould casting device. Referring to fig. 2, a sand mold casting device comprises a casting mold housing 1, wherein an inner runner 2 communicated with the inner cavity of the casting mold housing 1 is arranged on the casting mold housing 1, and when the sand mold casting device is arranged, a connecting port of the inner runner 2 and the casting mold housing 1 is arranged at the top of the inner cavity of the casting mold housing 1, so that the inner cavity of the casting mold housing 1 can be well ensured to be filled, and molten iron backflow can be prevented. The other end of the inner pouring gate 2 is connected with the pouring cup 5 through the feeding cap 3 and the transverse pouring gate 4, the feeding cap 3 is a hollow shell and is respectively communicated with the transverse pouring gate 4 and the inner pouring gate 2, in addition, the feeding cap 3 and the inner pouring gate 2 are detachably connected, so that the feeding cap 3 and the transverse pouring gate 4 can be detached, the feeding cap 3 and the transverse pouring gate 4 are convenient to reversely wash and clean, and the feeding cap 3 and the transverse pouring gate 4 are convenient to reversely wash, as shown in fig. 3, specifically, the feeding cap 3 is provided with a first connecting plate 9, the inner pouring gate 2 is provided with a second connecting plate 10, and the first connecting plate 9 and the second connecting plate 10 are connected through bolts. As shown in fig. 2 and 4, the runner 4 sequentially comprises an upper filter section 41, a middle filter section 42 and a lower filter section 43 along the flowing direction of molten iron, the top wall inside the upper filter section 41 and the bottom wall inside the lower filter section 43 are provided with a plurality of teeth 6, as shown in fig. 5, the heights of the teeth 6 are gradually increased along the flowing direction of molten iron, the tip of each tooth 6 is provided with an arc-shaped filter screen 7 at one side deviating from the flowing direction of molten iron, as shown in fig. 4, the middle part of the middle filter section 42 is provided with a middle filter screen 8 with a certain distance from the top wall and the bottom wall, when the middle filter screen 8 is arranged, the middle filter screen 8 is provided with an arc shape protruding towards one side of the flowing direction of molten iron, the arc-shaped middle filter screen 8 is convenient for collecting impurities, and impurities are prevented from continuing to flow downstream along two sides of the middle filter screen 8. When the inner pouring gate 2 and the cross pouring gate 4 are arranged, the bottoms of the inner pouring gate and the cross pouring gate gradually incline downwards along the flowing direction of molten iron, so that the molten iron can flow downwards conveniently, and the molten iron can flow into the casting mould shell 1 smoothly.

In the sand mold of this embodiment, molten iron is poured into the pouring cup 5 at the time of casting, and the molten iron flows from the pouring cup 5 through the upper filter section 41, the middle filter section 42, the lower filter section 43, the feeding cap 3, and the ingate 2 in this order, and finally flows into the mold housing 1 for cooling molding. According to the embodiment, the cross gate 4 is sequentially arranged into the upper filter section 41, the middle filter section 42 and the lower filter section 43 along the flowing direction of molten iron, the top wall in the upper filter section 41 and the bottom wall in the lower filter section 43 are provided with the plurality of teeth 6, the middle part of the middle filter section 42 is provided with the middle filter screen 8 which is a distance away from the top wall and the bottom wall, the teeth 6 of the upper filter section 41 block impurities floating on the upper part of molten iron, the middle filter screen 8 of the middle filter section 42 filters impurities mixed in the molten iron, the teeth 6 at the bottom of the lower filter section 43 block impurities deposited on the lower part of molten iron, so that different impurities contained in the upper, middle and lower sections of molten iron can be completely removed, the effect of removing impurities is improved, the overall purity of the molten iron is improved, the height of the teeth 6 is gradually increased along the flowing direction of molten iron, one side of the teeth 6 away from the flowing direction of molten iron is provided with the arc filter screen 7, the arc filter screen 7 can be blocked by the teeth 6, the impurities are prevented from entering the tip part of the molten iron again along the flowing direction of the molten iron, the gradient of the impurities are gradually increased, and the gradient effect of removing impurities is avoided, and the impurities are gradually removed; in addition, the upper filter section 41, the middle filter section 42 and the lower filter section 43 sequentially perform upper impurity removal, middle impurity removal and lower impurity removal on molten iron in the flowing process of the molten iron, so that impurity removal structures in all stages are sequentially staggered, and the flowing property of the molten iron is ensured.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. 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. It should be understood that the detailed description is presented for purposes of understanding only and is not intended to limit the utility model to all other embodiments that may be obtained by one skilled in the art without making any inventive effort.

Claims

1. The utility model provides a sand mould casting device, includes the mould casing, is equipped with on the mould casing with its communicating ingate of inner chamber, the ingate other end is connected its characterized in that with the pouring basin through feeding cap and cross gate: the horizontal runner include upper portion section of straining, middle part section of straining and lower part section of straining in proper order along the direction of molten iron flow, upper portion strain and be equipped with a plurality of teeth on the inside roof of section of straining and the inside diapire of lower part section of straining, the height of tooth increase gradually along the direction of molten iron flow, every tooth point portion is equipped with an arc filter screen in one side that deviates from the molten iron flow direction, middle part section of straining be equipped with a middle filter screen that has a distance apart from roof and diapire.

2. A sand mould apparatus as claimed in claim 1, wherein: the middle filter screen is arranged into an arc shape protruding towards one side of the flowing direction of molten iron.

3. A sand mould apparatus as claimed in claim 1, wherein: the connecting port of the ingate and the casting mould shell is arranged at the top of the inner cavity of the casting mould shell.

4. A sand mould apparatus according to claim 3, wherein: the bottoms of the inner pouring gate and the cross pouring gate are gradually inclined downwards along the flowing direction of molten iron.

5. A sand casting apparatus as claimed in claim 4, wherein: the feeding cap is detachably connected with the inner pouring channel.

6. A sand casting apparatus as claimed in claim 5, wherein: the feeding cap is provided with a first connecting plate, the ingate is provided with a second connecting plate, and the first connecting plate and the second connecting plate are connected through bolts.