CN203459666U - Multi-hole vacuum casting mold assembly - Google Patents

Multi-hole vacuum casting mold assembly Download PDF

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Publication number
CN203459666U
CN203459666U CN201320501017.6U CN201320501017U CN203459666U CN 203459666 U CN203459666 U CN 203459666U CN 201320501017 U CN201320501017 U CN 201320501017U CN 203459666 U CN203459666 U CN 203459666U
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China
Prior art keywords
graphite
mold
vacuum casting
circle
main body
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CN201320501017.6U
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Inventor
范仲华
计兴鑫
卜永周
黄杜钱
李艳
方健
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Hangzhou Huaguang Advanced Welding Materials Co Ltd
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Hangzhou Huaguang Advanced Welding Materials Co Ltd
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Abstract

The utility model relates to a multi-hole vacuum casting mold assembly which is applicable to vacuum casting technologies. The multi-hole vacuum casting mold assembly comprises a mold main body, a graphite cover and a graphite ring, wherein the mold main body consists of a cuboidal inner mold and four cuboidal outer molds, adjacent interfaces of the inner mold and the outer molds serve as parting faces of a casting mold, and a plurality of mold holes are symmetrically distributed in the surrounding parting faces; the inner mold is provided with a center hole, and a stalk portion of the graphite cover is inserted into the center hole; the graphite ring is located on the upper face of the mold main body, and a graphite ring hole is formed in the center of the graphite ring; the head of the graphite cover is located in the graphite ring, and a gap exists between the graphite cover and the graphite ring. According to the multi-hole vacuum casting mold assembly, the casting of a plurality of cast parts can be completed simultaneously, the structure is simpler and more reasonable, and the economical efficiency is good; the graphite cover is adopted for bypassing and buffering, so that the defects in a top pouring manner are better overcome.

Description

A kind of porous vacuum casting die assembly
Technical field
The utility model relates to a kind of porous vacuum casting die assembly, is mainly applicable to, in vacuum casting technology, belong to casting die field.
Background technology
Traditional mould is generally a secondary mould of workpiece one, and a plurality of workpiece need the casting in turn in rotating disk of many cover molds when casting, operating process complexity when a stove raw material is cast into a plurality of ingot casting respectively, and due to the inaccurate outside that is easily poured on mould, location.
For existing combined casting mould, although can realize a plurality of workpiece of a secondary mould, but structure is comparatively complicated, mould production cost is higher, and assembling process is complicated, to assembly precision, requires high, easily there is assembling dislocation, the demoulding is simultaneously comparatively complicated, affects integrated operation speed, so be not suitable for the casting of the simpler foundry goods of structure.For simple in structure, the uniform foundry goods of wall thickness, the top pouring type pouring type that general use formative technology is simple, mould is easily manufactured, liquation utilizes self gravitation effect along wall, to enter die cavity from top to bottom, mold-filling capacity is strong, filling velocity is fast, but larger to the thermal shock of type wall, cavity filling process steadily not there will be the defects such as slag inclusion yet.
On the other hand, metal type dies generally should be made by the metal material of good heat conductivity, mechanical property, because can be through heating and cooling repeatedly in mould use procedure, can produce growth phenomenon, make volume become large, meanwhile density reduces, intensity declines, and easily cracks and the be full of cracks of inner die cavity, this can cause inside ingot pore to increase, and affects the performance of ingot casting.
China Patent No. 201010517266 discloses the patent that name is called " a kind of vacuum casting die assembly ", this mould a plurality of ingot castings of can once casting, but it is, by feed trumpet He Tang road structure, liquation is injected to ingot mould, its mould structure design is complicated, structure defective tightness, does not overcome above-mentioned defect of the prior art.
China Patent No. 201220211292 discloses the patent that name is called " vacuum-casting device ", this mould is provided with rotating disk, on rotating disk, there are a plurality of ingot molds, liquation injects ingot mold by ingot casting pipe from vacuum tank, can be by dial rotation a plurality of ingot castings of casting, but its structural design is more complicated, goes back demand motive rotating disk, positioning accurate accuracy requires high, does not overcome above-mentioned defect of the prior art.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides that the cast of a kind of structural design advantages of simple, liquation evenly relaxes, intensity is good, is convenient to the porous vacuum casting die assembly made.
The technical scheme in the invention for solving the above technical problem is: this porous vacuum casting die assembly comprises die main body, it is characterized in that: also comprise graphite cover and graphite circle; Described die main body is comprised of the internal mold of a cuboid and the external mold of four cuboids, and four external molds are trapped among internal mold surrounding, and two adjacent external molds adopt alignment pin to connect; The interface that described internal mold and external mold are adjacent is the die joint of mold, symmetrical a plurality of nibs on die joint, and described nib consists of the interior nib of internal mold surrounding and the outer nib of external mold one side, and interior nib and outer nib are corresponding one by one; The center of described internal mold has centre bore, and described graphite cover comprises head and shank, shank be fixed on head below, the bottom surface of head is the circle that diameter is greater than centre bore, shank inserts in centre bore; Described graphite circle is positioned at above die main body, and there is graphite circle hole at graphite Quan center, and graphite circle hole is through hole, and bottom, graphite circle hole is circular, and this circular radius is greater than the centre bore center of circle to the minimum range of nib circumference; The head of described graphite cover, in graphite circle, has space between the two; The smooth laminating of all contact-making surfaces of described die assembly.Die assembly is simple and reasonable, and die sinking is convenient, can meet the requirement of product batch production; Group mould, form removal conveniently, can realize once casting and obtain a plurality of workpiece; For the defect of top gating, the utility model is chosen in internal mold center and opens a centre bore, by graphite cover, is blocked, and the head available buffer of graphite cover, divides liquation and flow into each nib die cavity; Graphite cover shank inserts in internal mold centre bore, and graphite cover is fixed, and can not move and float; Graphite circle can prevent that in casting cycle, liquation spatters to excessive, economizes in raw materials; Space between described head and graphite circle is centered around around head, and is uniformly distributed, and forms casting runner, and top, as cast gate, is convenient to liquation in casting cycle and is disperseed to form foundry goods in each nib die cavity of inflow; Described all contact-making surfaces comprise the contact-making surface of internal mold and four external molds, the contact-making surface between four external molds, the contact-making surface of die main body and graphite cover, the contact-making surface of die main body and graphite circle.
The bottom surface radius of the head of the preferred described graphite cover of the utility model is less than or equal to the centre bore center of circle to the minimum range of nib circumference; The radius of described bottom, graphite circle hole is less than the centre bore center of circle to the ultimate range of nib circumference.Preferred, in the bottom in graphite circle hole, radius of circle is greater than the centre bore center of circle to the distance in the nib center of circle.Control head and the adjustable head of size in graphite circle hole and the pore size between graphite circle, solution is injected in nib more reposefully, reduce liquation amount residual on die main body face simultaneously, economize in raw materials.
The profile of graphite circle described in the utility model can be cuboid, cylinder and round platform etc.
The application surface of internal mold described in the utility model is square, and the application surface of external mold is rectangle, and four external mold shapes, in the same size; The application surface length of short sides sum of the application surface length of side of described internal mold and external mold equals the application surface length of long sides of external mold, and application surface integral body is square.Die main body shape is regular, and close structure has been assembled rear employing gripper frame and fixed to clamp, and can prevent from leaking and expecting in casting process; Described application surface is the represented face of description Fig. 1.
A plurality of die throat diameter described in the utility model equates.Nib is consistent, can obtain the consistent a plurality of ingot casting of shape size.
Head and the shank of graphite cover described in the utility model are connected.
The head of graphite cover described in the utility model is frustum cone structure, pyramidal structure, Semicircular arched structure or other similar structures.In casting cycle, liquation first contacts with the head of graphite cover, by percussion, liquation flows to surrounding and edge has the side of certain gradient to flow into more equably nib, due to graphite cover smooth surface, and the mobile performance of high temperature solution on graphite is good, in casting cycle, graphite cover surface can not leave residue, can reduce scrap piece loss in casting cycle; On the one hand, graphite cover can play the effect of shunting, and each hole liquid stream is distributed quite, and whole cavity filling process uniform and stable, reduces the generation of casting defect; On the other hand, graphite cover can reduce casting rate, plays cushioning effect, reduces the thermal shock of liquation to mold wall, extends the service life of mould, has overcome preferably the existing defect of general top pouring type pouring type.
The head of the preferred graphite cover of the utility model is pyramidal structure, and the pyramidal structure demoulding is more convenient.
The internal diameter in the preferred described graphite circle of the utility model hole is up-small and down-big.The structural design in graphite circle hole and the structure of graphite cover adapt, and top radius I prevents that liquation from spattering to excessive better, and bottom radius can make greatly liquation more gently flow in nib smoothly, and makes to be convenient in demoulding.
Die main body described in the utility model, graphite cover and graphite circle coaxially distribute.In coaxial situation, whole die assembly overall structure is more regular, is conducive to liquation and flows down more equably to surrounding.
The making material that die main body described in the utility model is used is ferrite type spheroidal graphite cast-iron or malleable cast iron.Ferrite type spheroidal graphite cast-iron mechanical property is higher, has good heat-resisting, corrosion resisting property, and compactness is good, can guarantee the quality requirement of ingot casting; And its growth tendency is little, the in use variation of temperature is little to the destruction of mould, and die life is long.
The utility model compared with prior art, has the following advantages and effect: assembly can complete the casting of a plurality of foundry goods simultaneously, compares be more suitable for the requirement that vacuum environment casting is produced with a common workpiece formula mould; Compare with existing combined casting mould, structure is advantages of simple more, and each inter-module is fixed by alignment pin, and group mould, form removal are convenient, are more suitable for the batch production of foundry goods simple in structure, and mould can Reusability, good economy performance; Entering die cavity with the direct cast of liquation compares, with the graphite cover that head is frustum cone structure, block centre bore, adopt graphite cover shunting, buffering, impact meeting to mold wall reduces greatly, the service life of mould is longer, and make liquation more steadily enter die cavity, and can reduce the generation of casting defect, overcome preferably the existing defect of general top pouring type pouring type.
Accompanying drawing explanation
Fig. 1 is the structural representation front view (display application face) of the utility model die main body.
Fig. 2 is the structural representation front view of the utility model graphite cover.
Fig. 3 is the structural representation top view of the utility model graphite cover.
Fig. 4 is the structural representation front view of the utility model graphite circle.
Fig. 5 is the A-A profile of Fig. 4.
Fig. 6 is the structural representation front view of the utility model while having assembled.
Fig. 7 is the B-B profile of Fig. 6.
In figure: die main body 1, internal mold 11, external mold 12, alignment pin 13, nib 14, interior nib 141, outer nib 142, centre bore 15, graphite cover 2, head 21, shank 22, graphite circle 3, graphite circle hole 31; The application surface length of side a of internal mold 11, the application surface length of short sides b of external mold 12, the application surface length of long sides c of external mold 12, centre bore 15 centers of circle are to the minimum range m of nib 14 circumference, and centre bore 15 centers of circle are to the ultimate range n of nib 14 circumference.
The specific embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail.
Referring to Fig. 1-Fig. 7, the present embodiment comprises: die main body 1, graphite cover 2 and graphite circle 3, the internal mold 11 that described die main body 1 is foursquare cuboid by an application surface and application surface are that the external mold 12 of rectangular four cuboids forms, four external mold 12 shapes, in the same size, and the application surface length of short sides b sum of the application surface length of side a of internal mold 11 and external mold 12 equals the application surface length of long sides c of external mold 12, die main body 1 application surface is square; Four described external molds 12 are trapped among internal mold 11 surroundings, and adjacent two external molds 12 adopt alignment pin 13 to connect; The surrounding of described internal mold 11 respectively has two interior nibs 141, each external mold 12 1 side has two outer nibs 142, interior nib 141 and outer nib 142 are semicylinder structure and corresponding one by one, form the nib 14 of eight cylindrical structures, and the diameter of eight nibs 14 are 18mm; Described graphite cover 2 comprises head 21 and shank 22, shank 22 be fixed on head 21 below and be connected, head 21 is frustum cone structure; Described internal mold 11 centers have the centre bore 15 of diameter 35mm, and the base diameter of described head 21 is greater than 35mm and radius is less than centre bore 15 centers of circle to the minimum range m of nib 14 circumference, and shank 22 snaps in centre bore 15; Described graphite circle 3 is positioned at above die main body 1, and the graphite circle hole 31 at graphite circle 3 centers is frustum cone structure through hole, and top radius is little, bottom radius is large; Described head 21 is positioned at graphite circle 3, has space between the two; The radius of described 31 bottoms, graphite circle hole is greater than centre bore 15 centers of circle to the minimum range m of nib 14 circumference, and the radius of bottom, graphite circle hole is less than centre bore 15 centers of circle to the ultimate range n of nib 14 circumference; Described die main body 1, graphite cover 2 and graphite circle 3 are coaxial, the smooth laminating of all contact-making surfaces.
In the present embodiment, the making material that die main body 1 is used is ferrite type spheroidal graphite cast-iron.Ferrite type spheroidal graphite cast-iron mechanical property is higher, has good heat-resisting, corrosion resisting property, and compactness is good, can guarantee the quality requirement of ingot casting; And its growth tendency is little, the in use variation of temperature is little to the destruction of mould, and die life is long.
Assembling process of the present utility model is as follows: in internal mold 11 surroundings, respectively place an external mold 12, the outer nib 142 of external mold 12 is corresponding one by one with the interior nib 141 of internal mold 11, the long limit vertical connection of the minor face of an external mold 12 and an adjacent external mold 12, by alignment pin 13, be fixed, and internal mold 11 is stuck in the middle of four external molds 12, form the regular cuboid of shape the nib 14 that is 18mm with eight diameters, die main body 1 after having assembled adopts gripper frame to fix to clamp, and can prevent from leaking and expecting in casting process.Then, graphite cover 2 is put into the centre bore 15 of internal mold 11, blocked centre bore 15, then graphite circle 3 is positioned on die main body, make graphite cover head 21 be positioned at graphite circle 3, whole die assembly has been assembled.
The utility model is in casting cycle, and solution injects from center, from the head 21 and graphite circle 3 between space flow to nib 14.Because the head 21 of graphite cover 2 is frustum cone structure, top has one compared with chain-wales, and liquation elder generation and contact with platform, by percussion, liquation flows to surrounding and along there being the frustum cone side of certain gradient to flow into more equably eight nibs 14, carries out nature moulding in nib 14.Due to graphite cover 2 smooth surfaces, and the mobile performance of high temperature solution on graphite is good, and in casting cycle, graphite cover 2 surfaces can not leave residue, can reduce scrap piece loss in casting cycle.During casting, have a certain amount of liquation to flow on the face of nib 14 surroundings, and have certain liquation to overflow to spatter, this part liquation can stop by graphite circle 3, then in ostium, wherein small part can stay die main body 1 above.After having cast, can obtain highly consistent ingot casting, the residue that die main body 1 small part liquation above forms is processed as waste recovery.
The utility model die assembly can complete the casting of eight foundry goods simultaneously, and structure is advantages of simple more, and each inter-module is fixing by alignment pin 13, and group mould, form removal are convenient, are more suitable for the batch production of foundry goods simple in structure, and mould can Reusability, good economy performance; The graphite cover 2 that is frustum cone structure with head is blocked centre bore 15, adopt graphite cover 2 shuntings, buffering, impact meeting to mold wall reduces greatly, the service life of mould is longer, and make liquation more steadily enter die cavity, can reduce the generation of casting defect, overcome preferably the existing defect of top pouring type pouring type.
In the utility model embodiment, be provided with eight nibs 14, during practical application, the quantity of nib 14, the quantity of interior nib 141 and outer nib 142, can arrange as required.
By foregoing description, those skilled in the art can implement.
In addition, it should be noted that, the specific embodiment described in this description, as long as its part does not clearly state concrete shape and size, this part can be any shape and size that adapt with its structure; Meanwhile, the title that part is got also can be different.Although the utility model with embodiment openly as above; but it is not in order to limit protection domain of the present utility model; any technical staff who is familiar with this technology, the change of doing within not departing from design of the present utility model and scope and retouching, all should belong to protection domain of the present utility model.

Claims (8)

1. a porous vacuum casting die assembly, comprises die main body, it is characterized in that: also comprise graphite cover and graphite circle; Described die main body is comprised of the internal mold of a cuboid and the external mold of four cuboids, and four external molds are trapped among internal mold surrounding, and two adjacent external molds adopt alignment pin to connect; The interface that described internal mold and external mold are adjacent is the die joint of mold, symmetrical a plurality of nibs on die joint, and described nib consists of the interior nib of internal mold surrounding and the outer nib of external mold one side, and interior nib and outer nib are corresponding one by one; The center of described internal mold has centre bore, and described graphite cover comprises head and shank, shank be fixed on head below, the bottom surface of head is the circle that diameter is greater than centre bore, shank inserts in centre bore; Described graphite circle is positioned at above die main body, and there is graphite circle hole at graphite Quan center, and graphite circle hole is through hole, and bottom, graphite circle hole is circular, and this circular radius is greater than the centre bore center of circle to the minimum range of nib circumference; The head of described graphite cover, in graphite circle, has space between the two; The smooth laminating of all contact-making surfaces of described die assembly.
2. porous vacuum casting die assembly according to claim 1, is characterized in that: the application surface of described internal mold is square, and the application surface of external mold is rectangle, and four external mold shapes, in the same size; The application surface length of short sides sum of the application surface length of side of described internal mold and external mold equals the application surface length of long sides of external mold, and application surface integral body is square.
3. porous vacuum casting die assembly according to claim 1, is characterized in that: described a plurality of die throat diameters equate.
4. porous vacuum casting die assembly according to claim 1, is characterized in that: head and the shank of described graphite cover are connected.
5. according to the porous vacuum casting die assembly described in claim 1 or 4, it is characterized in that: the head of described graphite cover is a kind of in frustum cone structure, pyramidal structure and Semicircular arched structure.
6. porous vacuum casting die assembly according to claim 1, is characterized in that: the internal diameter in described graphite circle hole is up-small and down-big.
7. porous vacuum casting die assembly according to claim 1, is characterized in that: described die main body, graphite cover and graphite circle coaxially distribute.
8. porous vacuum casting die assembly according to claim 1 and 2, is characterized in that: the making material that described die main body is used is ferrite type spheroidal graphite cast-iron or malleable cast iron.
CN201320501017.6U 2013-08-16 2013-08-16 Multi-hole vacuum casting mold assembly Active CN203459666U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103464725A (en) * 2013-08-16 2013-12-25 杭州华光焊接新材料股份有限公司 Multi-hole vacuum casting mould component
CN104325096A (en) * 2014-11-28 2015-02-04 山东瑞泰新材料科技有限公司 Steel ingot casting device
CN109438143A (en) * 2018-10-25 2019-03-08 山西北方兴安化学工业有限公司 A kind of reversed casting coating mould

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103464725A (en) * 2013-08-16 2013-12-25 杭州华光焊接新材料股份有限公司 Multi-hole vacuum casting mould component
CN103464725B (en) * 2013-08-16 2015-05-20 杭州华光焊接新材料股份有限公司 Multi-hole vacuum casting mould component
CN104325096A (en) * 2014-11-28 2015-02-04 山东瑞泰新材料科技有限公司 Steel ingot casting device
CN104325096B (en) * 2014-11-28 2016-08-24 山东瑞泰新材料科技有限公司 Steel ingot casting device
CN109438143A (en) * 2018-10-25 2019-03-08 山西北方兴安化学工业有限公司 A kind of reversed casting coating mould
CN109438143B (en) * 2018-10-25 2021-03-30 山西北方兴安化学工业有限公司 Reverse casting cladding mould

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