CN212704267U

CN212704267U - Core support mechanism for casting modeling

Info

Publication number: CN212704267U
Application number: CN202021525635.0U
Authority: CN
Inventors: 韩帅; 徐鹏
Original assignee: Dalian Pill Pioneer Metals Corp
Current assignee: Dalian Pill Pioneer Metals Corp
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-16
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a chaplet mechanism for casting modeling, which comprises a base (1), a magnet (2), a chaplet (3), a left demoulding block (4) and a right demoulding block (5); magnet (2) paste in base (1) hole bottom, chaplet (3) processing have first ring platform (3a), second ring platform (3b) and third ring platform (3c), third ring platform (3c) adsorb on magnet (2), a left side take off module (4) and the right side take off module (5) assemble the back and press second ring platform (3b) and third ring platform (3c) and buckle in the hole of base (1), first ring platform (3a) surpass a left side and take off module (4) and the right side and take off module (5) upper surface. The beneficial effects of the utility model are that use the utility model discloses a foundry goods molding is with chaplet mechanism production "triangle-shaped" class foundry goods has solved the problem that original chaplet scheme brought, greatly reduced use chaplet to cause the influence to the foundry goods surface, reduced the rejection rate of foundry goods, gained good economic benefits.

Description

Core support mechanism for casting modeling

Technical Field

The utility model relates to a foundry goods is chaplet mechanism for molding.

Background

The company produces a triangular lathe bed casting for a certain machine tool factory in Japan, the casting has higher quality requirement, and the appearance does not allow visual defects. The sand core of the inner cavity of the triangular casting is also triangular and needs to be supported and fixed by a chaplet. The traditional method for fixing the chaplet is to fix the chaplet on a main mould or a sand core by a nail penetrating through the chaplet (figure 1), and when the method is used for fixing the chaplet, the following problems are easy to occur;

1. when the core support is fixed by nails, the main mould or the sand core is easy to nail and crack, and sand holes are easy to cause during pouring;

2. the support surface of the core support is not well fused with molten iron, so that the defects of choking fire and two layers of skin are formed, and the appearance of the casting is influenced;

3. the nail fuses easily when the pouring, causes the chaplet to drop on the track, adds the foreign matter defect that forms man-hour.

Disclosure of Invention

The utility model discloses the technical problem who solves is in order to solve above-mentioned problem, we have invented a core support mechanism for foundry goods molding, directly props the pre-buried core in the primary mould when molding.

The utility model adopts the technical proposal that a chaplet mechanism for casting modeling comprises a base, a magnet, a chaplet, a left demoulding module and a right demoulding module; magnet paste in base hole bottom, chaplet processing have first ring platform, second ring platform and third ring platform, the third ring platform adsorb on magnet, a left side take off module and right drawing of patterns piece assemble the back and buckle second ring platform and third ring platform pressure in the hole of base, first ring platform surpasss a left side and takes off module and right drawing of patterns piece upper surface.

The left demoulding block and the right demoulding block are formed by cutting a truncated cone body, and the cutting surface passes through the central line of the truncated cone.

The left demoulding block is cut by a cutting surface parallel to the cutting surface.

The inner hole of the base is attached to the outer circumferential surfaces of the left demoulding block and the right demoulding block. And a vertical surface inner wall is also processed in the inner hole of the base at the position corresponding to the cutting surface of the left demoulding block, and the cutting surface is attached to the vertical surface inner wall.

The method comprises the following steps:

1. firstly, fixing a base on a wood-type template, and sticking a magnet at the bottom;

2. before modeling, the core support, the left demoulding block and the right demoulding block are combined together and placed into a base (a conical table body is firstly processed, a vertical surface is cut off, and then the conical table body is cut along a central line to form the left demoulding block and the right demoulding block), then resin sand is placed for modeling, and the model is formed after the sand is hardened;

3. the part (first ring platform) of the right demoulding block of the core support exceeding the left demoulding block is buried in the resin sand mould, the second ring platform of the core support blocks the left demoulding block and the right demoulding block when in mould lifting, the inclined plane of the right demoulding block is consistent with the mould lifting direction, the demoulding can be smoothly carried out, the vertical surface of the left demoulding block is kept attached to the vertical surface of the inner hole of the base, and the left demoulding block is prevented from sliding outwards under the action of gravity. Demoulding the mixture and the sand mould together, and separating the mixture from the base;

4. taking the left demoulding module and the right demoulding module off the core support, after the moulding is finished, then setting the core, and supporting and fixing the sand core by the core support;

5. after pouring, the fusion position of the core support and the casting is only an 8mm cylinder, and the redundant part of the core support exceeding the casting is removed.

The beneficial effects of the utility model are that use the utility model discloses a foundry goods molding is with chaplet mechanism production "triangle-shaped" class foundry goods has solved the problem that original chaplet scheme brought, greatly reduced use chaplet to cause the influence to the foundry goods surface, reduced the rejection rate of foundry goods, gained good economic benefits.

Drawings

FIG. 1 is a schematic view of a chaplet structure used in the prior art;

FIG. 2 is a front view of a chaplet mechanism for casting molding of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural view of the core support mechanism for casting molding of the present invention mounted on a wooden mold (the arrow direction in the figure is the drawing direction);

fig. 5 is a schematic structural view of a chaplet used in the casting of the chaplet mechanism for casting molding of the present invention.

Labeled as: 1-base, 2-magnet, 3-chaplet, 3 a-first ring platform, 3 b-second ring platform, 3 c-third ring platform, 4-left demoulding module, 5-right demoulding module, 6-resin sand mould, 7-wood mould, 8-sand core and 9-casting.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A core support mechanism for casting molding comprises a base 1, a magnet 2, a core support 3, a left demoulding block 4 and a right demoulding block 5; magnet 2 paste in 1 hole bottom of base, chaplet 3 processing have first ring platform 3a, second ring platform 3b and third ring platform 3c, third ring platform 3c adsorb on magnet 2, left side drawing of patterns piece 4 and right side take off module 5 and assemble the back and press the knot in base 1's hole with second ring platform 3b and third ring platform 3c, first ring platform 3a surpasss left drawing of patterns piece 4 and right side and takes off module 5 upper surface (as shown in fig. 2 and fig. 3).

The left demoulding block 4 and the right demoulding block 5 are formed by cutting a truncated cone, and the cutting surface passes through the central line of the truncated cone.

The inner hole of the base 1 is attached to the outer circumferential surfaces of the left demoulding block 4 and the right demoulding block 5. And a vertical surface inner wall is also processed in the inner hole of the base at the position corresponding to the cutting surface of the left demoulding block, and the cutting surface is attached to the vertical surface inner wall.

The method comprises the following steps:

1. firstly, fixing a base 1 on a wood type 7 template, and sticking a magnet 2 at the bottom;

2. before molding, the chaplet 3, the left demolding block 4 and the right demolding block 5 are combined together and placed into the base 1 (a conical table body is firstly processed, a vertical surface is cut off, and then the conical table body is cut along a central line to form the left demolding block and the right demolding block), then resin sand is placed for molding, and after the resin sand is hardened, the resin sand is molded to form a resin sand mold 6;

3. the part (the first ring platform 3a) of the core support 3, which exceeds the left demoulding block 4 and the right demoulding block 5, is buried in the resin sand mould, the second ring platform 3b of the core support clamps the left demoulding block 4 and the right demoulding block 5 when in mould lifting, and the inclined plane of the right demoulding block 5 is consistent with the mould lifting direction, so that the demoulding can be smoothly carried out. The vertical face of left demoulding block 4 keeps laminating with the vertical face of base 1 hole, prevents that left demoulding block 4 from slipping outward under the effect of gravity. They are demolded together with the resin sand mold 6, leaving the base 1 (as shown in fig. 4);

4. taking down the left demoulding block 4 and the right demoulding block 5 from the core support 3, finishing moulding, then setting a core, and supporting and fixing the sand core 8 by the core support 3;

5. after casting, the position where the chaplet 3 is fused with the casting 9 is only 8mm cylinder, and the excessive part of the chaplet 3 beyond the casting is removed (as shown in fig. 5).

Claims

1. The utility model provides a foundry goods is chaplet mechanism for molding which characterized in that: comprises a base (1), a magnet (2), a chaplet (3), a left demoulding module (4) and a right demoulding module (5); magnet (2) paste in base (1) hole bottom, chaplet (3) processing have first ring platform (3a), second ring platform (3b) and third ring platform (3c), third ring platform (3c) adsorb on magnet (2), a left side take off module (4) and the right side take off module (5) assemble the back and press second ring platform (3b) and third ring platform (3c) and buckle in the hole of base (1), first ring platform (3a) surpass a left side and take off module (4) and the right side and take off module (5) upper surface.

2. The chaplet mechanism for molding a casting according to claim 1, wherein: the left demoulding module (4) and the right demoulding module (5) are formed by cutting a truncated cone, and the cutting surface passes through the central line of the truncated cone.

3. The chaplet mechanism for molding a casting according to claim 2, wherein: the left stripping module (4) is cut by a cutting surface parallel to the cutting surface.

4. The chaplet mechanism for molding a casting according to claim 1, wherein: the inner hole of the base (1) is attached to the outer circumferential surfaces of the left demoulding block (4) and the right demoulding block (5).