CN213379150U

CN213379150U - Stepped ingate with angle for pouring multilayer casting

Info

Publication number: CN213379150U
Application number: CN202022385104.2U
Authority: CN
Inventors: 李志博; 李丹; 徐小光; 周桂梅; 李勇; 刘峰
Original assignee: Qiqihar Heavy Casting Co ltd
Current assignee: Qiqihar Heavy Casting Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-06-08
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses a take ladder of angle of pouring multilayer foundry goods use waters in belongs to casting technical field. The front end of an inner pouring gate of the middle sand box is bent downwards for a certain angle, so that the front end of the inner pouring gate becomes a lower inclined inner pouring gate, the end part of the lower inclined inner pouring gate is communicated with a branch straight pouring gate, and molten iron can flow upwards for a certain distance along the lower inclined inner pouring gate and then enter a horizontal inner pouring gate, so that the molten iron enters a casting cavity; certain angle of upwards bending at the ingate front end of sand box down, make its front end become to tilt up the ingate, tilt up the ingate tip rather than divide the sprue intercommunication, the iron liquid gets into its horizontally ingate after directly flowing through a section distance along the ingate that tilts on it downwards, thereby get into the foundry goods die cavity, this ingate guarantees that the multilayer foundry goods fills the type according to the sequence successive layer from the bottom up when filling the type, can not get into the iron liquid in advance in the upper casting die cavity, avoid its inside production iron bean, prevent the cutout, improve and fill type efficiency and quality, can fill type multilayer foundry goods, improve the foundry goods quality.

Description

Stepped ingate with angle for pouring multilayer casting

Technical Field

The utility model relates to a take ladder of angle of pouring multilayer foundry goods use waters in belongs to casting technical field.

Background

A plurality of castings are placed in a layered mode in the vertical direction, and a set of pouring system is used for pouring, so that the production rate can be improved, the site area is saved, the casting quality is guaranteed, and the cooling time of thin-wall castings is controlled. When a multi-layer casting is poured, the molten iron needs to be filled from the lowest layer casting to the bottom and the top layer by layer.

Traditional ingate, when the multilayer fills the type, can not guarantee to fill the type from bottom to top, and molten iron can follow every ingate and get into simultaneously, and the ingate of upper strata advances iron quantity and is less more, and the partial in situ takes place the velocity of flow and crosses the condition such as low, cut off, especially in the initial casting in-process, can take place to cut off in the upper casting die cavity of well, and a small amount of molten iron that gets into in the die cavity can cool off in advance and become the iron bean, and casting quality hardly obtains the assurance.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies that prior art exists, the utility model provides a take ladder of angle of pouring multilayer foundry goods use waters in, should water in and guarantee that multilayer foundry goods fills the type according to the from the bottom up order successive layer when filling the type, lower floor's foundry goods fills the type in-process, upper casting die cavity can not get into the iron liquid, avoid its inside production iron bean, guarantee that the interior molten iron velocity of flow of watering in filling the type is stable, prevent the cutout, improve and fill type efficiency and quality, can fill type multilayer foundry goods, improve the foundry goods quality, and the production cost is reduced.

The utility model provides a technical scheme that its technical problem adopted is: a ladder ingate with angles for pouring multilayer castings comprises a cope flask, a middle-layer flask, a drag flask, a sprue, a cross runner, a branch sprue, an ingate and a casting cavity, wherein a plurality of middle-layer flasks are stacked between the cope flask and the drag flask, the cope flask, the middle-layer flask and the drag flask are mutually fixed into a rectangular body through bolts, the cope flask is provided with the sprue, the bottom surface of the cope flask is provided with the cross runner communicated with the sprue, the middle-layer flask is provided with only one pair of branch sprues penetrating through the upper end surface and the lower end surface, the branch sprues of the middle-layer flask are communicated up and down, the branch sprue of the middle-layer flask at the uppermost layer is communicated with the cross runner, the top of the drag flask is provided with, the branch sprue is communicated with the branch sprue of the middle sand box, an inner sprue communicated with the branch sprue is arranged in the middle sand box, the inner pouring gate is a horizontal channel, and the end part of the inner pouring gate is communicated with the bottom end of the side wall of the casting cavity formed at the top end of the middle-layer sand box; an ingate communicated with the bottom end of the branch sprue is arranged in the drag flask, the ingate is a horizontal channel, and the end part of the ingate is communicated with the bottom end of the side wall of the casting cavity formed at the top end of the drag flask; molten iron enters a cross gate from a sprue, enters a branch sprue from the cross gate, enters a casting cavity through an ingate communicated with the side wall of the branch sprue, and completes mold filling, wherein the front end of the ingate of the middle-layer sand box is bent downwards by a certain angle, so that the front end of the ingate becomes a lower inclined ingate, the end part of the lower inclined ingate is communicated with the branch sprue, and the molten iron can enter the horizontal ingate after flowing upwards for a certain distance along the lower inclined ingate so as to enter the casting cavity; the front end of the ingate of the lower sand box is bent upwards for a certain angle, so that the front end of the ingate becomes an upper inclined ingate, the end part of the upper inclined ingate is communicated with a branch sprue, and molten iron directly flows downwards along the upper inclined ingate for a certain distance and then enters the horizontal ingate, so as to enter a casting cavity.

Furthermore, the sum of the transverse distances between the lower inclined ingate and the ingate at the rear end of the lower inclined ingate is the same as the distance between the traditional ingate, the sum of the transverse distances between the upper inclined ingate and the ingate at the rear end of the lower inclined ingate is the same as the distance between the traditional ingate, when molten iron fills the lower sand box, the molten iron approaches the upper inclined ingate, the filling speed of the lower casting cavity can be further improved under the action of gravity, the horizontal ingate at the rear end can reduce the impact force of the molten iron entering the casting cavity, the resin sand in the casting cavity is prevented from being forcibly washed away, and the casting forming effect is improved.

Furthermore, in a closed pouring system and a semi-closed pouring system, the included angle between the lower inclined ingate of the middle sand box and the branch sprue is gradually reduced from large to small, namely the gradient of the molten iron in the lower inclined ingate is gradually changed from the upper layer to the lower layer, so that the conditions of flow cutoff, iron bean and the like caused by the molten iron entering a cavity at the upper layer when the lower layer is filled in a pressure flowing state are prevented.

Furthermore, in the open type pouring system and the closed-open type pouring system, the inclination angle of the lower inclined ingate of the middle layer sand box is consistent, the included angle between the lower inclined ingate of the layer sand box and the sub-sprue is 60-88 degrees, and the iron liquid needs to be in a slope of 2-30 degrees if entering the casting cavity 8.

The utility model has the advantages that: the problem of traditional multilayer fill type take place the circumstances such as cutout, indisputable bean easily is solved, this ingate guarantees that the multilayer foundry goods fills the type according to the from the bottom up order successive layer when filling the type, and lower floor's foundry goods fills the type in-process, can not get into the iron liquid in the upper casting die cavity, avoids its inside iron bean that produces, guarantees to fill the stable velocity of flow of iron liquid in the ingate of type, prevents to cut off, improves and fills type efficiency and quality, can fill type multilayer foundry goods, improves the foundry goods quality, reduction in production cost.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Fig. 1 is a schematic main sectional structure diagram of the present invention.

Fig. 2 is a schematic side sectional structural view of the present invention.

Fig. 3 is a cross-sectional view of the middle sand box of the present invention.

Fig. 4 is a schematic structural diagram of the present invention.

FIG. 5 is a schematic view of a conventional multi-layer casting ingate structure.

Reference numbers in the figures:

1. cope flask, 2, middle level sand box, 3, drag flask, 4, sprue, 5, cross gate, 6, branch sprue, 7, ingate, 8, casting die cavity, 9, down-dip ingate, 10, oblique ingate.

Detailed Description

As shown in figures 1-5, an angled ladder ingate for pouring multilayer castings comprises a cope flask 1, a middle flask 2, a drag flask 3, a sprue 4, a runner 5, a branch sprue 6, an ingate 7 and a casting cavity 8, wherein a plurality of middle flasks 2 are stacked between the cope flask 1 and the drag flask 3, the cope flask 1, the middle flask 2 and the drag flask 3 are fixed into a rectangular body by bolts, the sprue 4 is arranged on the cope flask 1, the runner communicated with the sprue 4 is arranged on the bottom surface of the cope flask 1, only a pair of branch sprues 6 penetrating through the upper and lower end surfaces are arranged on the middle flask 2, the branch sprues 6 of the middle flask 2 are communicated with the upper and lower ends, the branch sprues 6 of the middle flask 2 are communicated with the runner 5, the top of the drag flask 3 is provided with a pair of branch sprues 6, the branch sprues 6 are communicated with the branch sprues 6 of the middle flask 2, an ingate 7 communicated with the sub-sprue 6 is arranged in the middle sand box 2, the ingate 7 is a horizontal channel, and the end part of the ingate 7 is communicated with the bottom end of the side wall of a casting cavity 8 formed at the top end of the middle sand box 2; an ingate 7 communicated with the bottom end of the sub-sprue 6 is arranged in the drag flask 3, the ingate 7 is a horizontal channel, and the end part of the ingate 7 is communicated with the bottom end of the side wall of a casting cavity 8 formed at the top end of the drag flask 3; molten iron enters a cross gate 5 from a sprue 4, enters a branch sprue 6 from the cross gate 5, and enters a casting cavity through an ingate 7 communicated with the side wall of the branch sprue 6 to finish filling, wherein the front end of the ingate 7 of the middle-layer sand box 2 is bent downwards by a certain angle, so that the front end of the ingate 7 becomes a lower inclined ingate 9, the end part of the lower inclined ingate 9 is communicated with the branch sprue 6, and the molten iron can enter the horizontal ingate 7 after flowing upwards for a certain distance along the lower inclined ingate 9, so as to enter the casting cavity 8; the front end of an ingate 7 of the lower sand box 3 is bent upwards for a certain angle, so that the front end of the ingate becomes an upper inclined ingate 10, the end part of the upper inclined ingate 10 is communicated with a branch sprue 6, and molten iron directly flows downwards along the upper inclined ingate 10 for a certain distance and then enters the horizontal ingate 7, so as to enter a casting cavity 8.

Further, the sum of the transverse distances between the lower inclined ingate 9 and the ingate 7 at the rear end of the lower inclined ingate is the same as that of the traditional ingate 7, the sum of the transverse distances between the upper inclined ingate 10 and the ingate 7 at the rear end of the lower inclined ingate is the same as that of the traditional ingate 7, when molten iron fills the lower sand box 3, the molten iron can further increase the filling speed of the lower casting cavity under the action of gravity by the inclined ingate 10, the impact force of the molten iron entering the casting cavity 8 can be relieved by the horizontal ingate 7 at the rear end, the resin sand in the casting cavity 8 is prevented from being forcibly washed away, and the casting forming effect is improved.

Furthermore, in the closed pouring system and the semi-closed pouring system, the included angle between the lower inclined ingate 9 of the middle sand box 2 and the branch sprue 6 thereof is gradually reduced from large to small, namely the gradient of the molten iron in the lower inclined ingate 9 is gradually increased from the upper layer to the lower layer, so that the conditions of flow cutoff, iron bean and the like caused by the molten iron entering a cavity at the upper layer when the lower layer is filled in a pressure flowing state are prevented.

Further, in the open type pouring system and the closed-open type pouring system, the inclination angle of the lower inclined ingate 9 of the middle layer sand box 2 is consistent, the included angle between the lower inclined ingate 9 of the layer sand box 2 and the branch sprue 6 is 60-88 degrees, and if molten iron enters the casting cavity 8 of the layer sand box, the molten iron needs to pass through a slope of 2-30 degrees.

Claims

1. A ladder ingate with angles for pouring multilayer castings comprises a cope flask (1), a middle-layer flask (2), a drag flask (3), a sprue (4), a cross runner (5), a branch sprue (6), an ingate (7) and a casting cavity (8), wherein a plurality of middle-layer flasks (2) are stacked between the cope flask (1) and the drag flask (3), the cope flask (1), the middle-layer flask (2) and the drag flask (3) are fixed into a rectangular body through bolts, the sprue (4) is arranged on the cope flask (1), the cross runner communicated with the sprue (4) is arranged on the bottom surface of the cope flask (1), only a pair of branch sprues (6) penetrating through the upper end surface and the lower end surface is arranged on the middle-layer flask (2), the branch sprues (6) of the middle-layer flask (2) are communicated up and down, the branch sprues (6) of the topmost middle-layer flask (2) are communicated with the cross runner (5), a pair of split sprues (6) are formed in the top of the lower sand box (3), the split sprues (6) are communicated with the split sprues (6) of the middle sand box (2), inner runners (7) communicated with the split sprues (6) are arranged in the middle sand box (2), the inner runners (7) are horizontal channels, and the end parts of the inner runners (7) are communicated with the bottom ends of the side walls of casting cavities (8) formed in the top end of the middle sand box (2); an ingate (7) communicated with the bottom end of the sub-sprue (6) is arranged in the drag flask (3), the ingate (7) is a horizontal channel, and the end part of the ingate (7) is communicated with the bottom end of the side wall of a casting cavity (8) formed in the top end of the drag flask (3); molten iron enters the cross gate (5) from the sprue (4), enters the branch sprue (6) from the cross gate (5), enters the casting cavity through the ingate (7) communicated with the side wall of the branch sprue (6), and completes the filling, and is characterized in that: the front end of an ingate (7) of the middle sand box (2) is bent downwards for a certain angle, so that the front end of the ingate becomes a lower inclined ingate (9), the end part of the lower inclined ingate (9) is communicated with a branch sprue (6), and molten iron can enter the horizontal ingate (7) after flowing upwards for a certain distance along the lower inclined ingate (9) so as to enter a casting cavity (8); the front end of an ingate (7) of the lower sand box (3) is bent upwards for a certain angle, so that the front end of the ingate is an upper inclined ingate (10), the end part of the upper inclined ingate (10) is communicated with a branch sprue (6), and molten iron directly flows downwards along the upper inclined ingate (10) for a certain distance and then enters the horizontal ingate (7) of the lower inclined ingate, so as to enter a casting cavity (8).

2. An angled stepped ingate for pouring a multi-layer casting according to claim 1, wherein: the sum of the transverse distances between the lower inclined ingate (9) and the ingate (7) at the rear end of the lower inclined ingate is the same as the distance between the traditional ingate (7), and the sum of the transverse distances between the upper inclined ingate (10) and the ingate (7) at the rear end of the lower inclined ingate is the same as the distance between the traditional ingate (7).

3. An angled stepped ingate for pouring a multi-layer casting according to claim 1, wherein: in a closed pouring system and a semi-closed pouring system, the included angle between a lower inclined ingate (9) of a middle sand box (2) and a branch sprue (6) thereof is gradually reduced.

4. An angled stepped ingate for pouring a multi-layer casting according to claim 1, wherein: in the open type pouring system and the closed-open type pouring system, the inclination angles of the lower inclined ingates (9) of the middle sand box (2) are consistent, and the included angle between the lower inclined ingates (9) of the middle sand box (2) and the branch straight pouring channel (6) is between 60 degrees and 88 degrees.