CN105750495B - The casting mold and localization method of vertical core auxiliary locator are set - Google Patents

Abstract

A kind of casting mold and localization method of the vertical core auxiliary locator of setting, the casting mold includes top box, nowel, main core, vertical core, keeper, the vertical core includes lower core print and Shandong core print, upper sand mold and Shandong core print just to position cope print is set, lower sand mold and lower core print just to position drag point is set, keeper is set along the side that center of gravity is inclined to pre-tilt in vertical core, the keeper is arranged between vertical core and main core, to avoid vertical core from being tilted to center of gravity deviation direction, the keeper uses polystyrene material, upper sand mold and keeper just to position open up passage or flat rising head, by the present invention in that the polystyrene material fixing vertical core disappeared certainly with a kind of high temperature, ensure the correct rear mould assembling in position of core, avoid Shandong core print and rub sand, after the completion of mould assembling, due to being fixed to one another between Shandong core print and top box, keeper is not just acted on again, after cast, do not influence casting quality.

Description

The casting mold and localization method of vertical core auxiliary locator are set

Technical field

The present invention relates to internal cores field of locating technology during core casting, more particularly to a kind of vertical core auxiliary of setting The casting mold and localization method of positioner.

Background technology

During casting Technology Design, due to technique the need for and casting this body structure relation, can design a kind of vertical The positioning of core Shandong core print to reach the purpose of control casting dimension, and vertical core some be often high and thin, core dress After being fitted in lower impressions, core is unstable, lower core print and the nowel face out of plumb, the Shandong core print of vertical core during mould assembling of vertical core There are problems that rubbing sand between the cope print of top box.

And have two methods to handle this problem in reality production, first, using stud come fixing vertical core Shandong core print Position dimension, it is to avoid core print rubs sand when closing case；Secondth, between by repairing between vertical core and lower impressions core print Gap, avoids rocking for core as far as possible.

The method of the first plunger tip support can be used only on the relatively low casting of quality requirement, and the high casting of some quality requirements is not Allow to use stud, because the risk of stud and casting lack of fusion occurs using stud.

Second method complex operation, and size is still difficult control because under technological requirement core print and lower sand mold it Between answer brush coating because the thickness of dope layer is uncontrollable, the Baume degrees of coating and the flow coat gimmick of operator are all determined The thickness of dope layer is determined, coating thickness may result in not enter under core, dope layer is thin still to occur that core gap does not conform to It is suitable to cause core deflection, cause Shandong core print to rub sand problem.

The content of the invention

It is necessary to propose the casting mold that a kind of convenient operation, size Control accurately set vertical core auxiliary locator.

It there is a need to the localization method for proposing a kind of vertical core of auxiliary.

A kind of casting mold for setting vertical core auxiliary locator includes top box, nowel, main core, vertical core, positioning Lower sand mold in upper sand mold and nowel in part, the top box, which is set, accommodates main core, the die cavity of vertical core, the vertical sand Core includes lower core print and Shandong core print, upper sand mold and Shandong core print just to position the cope print coordinated with Shandong core print is set, Lower sand mold and lower core print just to position the drag point coordinated with lower core print is set, be inclined to pre-tilt along center of gravity in vertical core Side set keeper, the keeper is arranged between vertical core and main core, to avoid vertical core inclined to center of gravity Tilted to direction, the keeper uses polystyrene material, upper sand mold and keeper just to position open up passage or Flat rising head.

A kind of localization method of the vertical core of auxiliary, comprises the following steps：

It will be positioned under main core in core to nowel；

By under vertical core in core to nowel, wherein in the drag point of the lower sand mold of lower core print insertion of vertical core；

The inclined side placement positioning part of the heart is laid particular stress in vertical core；

Mould assembling, wherein the Shandong core print of vertical core is just to cope print.

By the present invention in that with polystyrene material fixing vertical core, it is ensured that mould assembling after the position of core is correct, it is to avoid Shandong core print rubs sand, and after the completion of mould assembling, due to being fixed to one another between Shandong core print and upper sand mold, keeper is not just acted on again, is poured After note, polystyrene material combustion gasification does not influence casting quality.

Brief description of the drawings

Fig. 1 is structural representation of the invention.

In figure：Top box 1, cope print 11, flat rising head 12, nowel 2, drag point 21, main core 3, vertical core 4, under Core print 41, Shandong core print 42, keeper 5.

Embodiment

Technical scheme and its implementation result are described further below in conjunction with accompanying drawing.

Referring to Fig. 1, the casting mold of the above-mentioned vertical core auxiliary locator of setting, including it is top box 1, nowel 2, main core 3, vertical Lower sand mold in upper sand mold and nowel 2 in formula core 4, keeper 5, top box 1, which is set, accommodates main core 3, the type of vertical core 4 Chamber, vertical core 4 includes lower core print 41 and Shandong core print 42, upper sand mold and Shandong core print 42 just to position set and Shandong core print 42 The cope print 11 of cooperation, lower sand mold and lower core print 41 just to position the drag point 21 coordinated with lower core print 41 is set, Keeper 5 is set along the side that center of gravity is inclined to pre-tilt in vertical core 4, keeper 5 is arranged on vertical core 4 and main core 3 Between, to avoid vertical core 4 from being tilted to center of gravity deviation direction, keeper 5 uses polystyrene material, in upper sand mold and positioning Part 5 just to position open up passage or flat rising head 12.

The size of keeper 5, such as width can be calculated according to the theoretical distance between vertical core 4 and main core 3, so Keeper 5 is placed between vertical core 4 and main core 3 afterwards, auxiliary positioning is realized so that vertical core 4 will not be due to weight Power is tilted.

The present invention by the way of plunger tip is supportted, exists particularly with some vertical cores when instead of relative positioning between core , it is necessary to when being positioned by other cores when can not contact positioning with upper sand mold and lower sand mold, can in the vertical core and Placement positioning part between other cores, when being compared to place stud, the composition of casting is purer, can obtain high-quality casting Part.

Generally, passage or flat rising head 12 are set on upper sand mold, because in the flue gas and die cavity after the gasification of keeper 5 Air is discharged along same passage, so because the expanded air in die cavity has larger buoyancy, to the formation of keeper 5 Flue gas has repulsive force so that the flue gas can not be discharged smoothly.So the present invention propose upper sand mold and keeper 5 just to position Put and open up passage, set respectively with the passage of the air discharge in die cavity, when meeting high temperature pouring molten iron to form keeper 5 The passage of the independent smooth discharge of flue gas during combustion gasification.

The area of section of the flat rising head 12 set herein is more than the area of section of passage, and the purpose for setting flat rising head 12 exists In the flue gas after flat rising head 12 can not only gasify for keeper is discharged, but also can be discharged for scum silica frost, because keeper 5 It is polystyrene material, when meeting high temperature liquid iron, Residual Carbides scum silica frost after combustion gasification, if discharged not in time, can float over type The surface of the casting in intracavitary portion, influences the quality of casting, and the setting of flat rising head 12 has larger sectional area, come for scum silica frost Say, the outside of the passage emersion die cavity with the floating of molten iron by scum silica frost along flat rising head 12, and then avoid scum silica frost from floating over casting Surface.

Further, keeper 5 is arranged between vertical core 4 and upper sand mold or lower sand mold, to avoid vertical core 4 to weight Heart deviation direction is tilted.

Further, the shape of the main core 3 and vertical core 4 of the shape of keeper 5 and both sides matches, or and both sides Upper sand mold or the shape of lower sand mold and vertical core 4 match so that its stable position.

Further, keeper 5 is multiple, is separately positioned on not homonymy and master that vertical core 4 is inclined to pre-tilt along center of gravity Between core 3 or upper sand mold or lower sand mold.

Further, upper sand mold and multiple keepers 5 just to position open up passage or flat rising head 12.

During using casting mold of the invention, main core 3 is first put into 2 times cores of nowel and positioned, then by vertical 4 times cores of core, Lower core print 41 is inserted in drag point 21, the inclined side placement positioning part 5 of the heart is laid particular stress in vertical core 4, such as in main sand Placement positioning part 5 between core 3 and vertical core 4, top box 1 is covered on nowel 2 so that the Shandong core print 42 of vertical core 4 is just To insertion cope print 11, mould assembling, cast.

In order to avoid polystyrene material crimp, the present invention is applied to less than 300 kilograms of small-sized cast casting, and Concrete shape, size and the density of keeper 5 are determined according to the weight of the live main core fixed.

Claims (6)

1. a kind of casting mold of the vertical core auxiliary locator of setting, it is characterised in that：Including top box, nowel, main core, vertical Lower sand mold in upper sand mold and nowel in core, keeper, the top box, which is set, accommodates main core, the die cavity of vertical core, The vertical core includes lower core print and Shandong core print, upper sand mold and Shandong core print just to position set upper with the cooperation of Shandong core print Core bedding frame, lower sand mold and lower core print just to position the drag point coordinated with lower core print is set, in vertical core along center of gravity The side for being inclined to pre-tilt sets keeper, and the keeper is arranged between vertical core and main core, or keeper is set Put between vertical core and upper sand mold or lower sand mold, to avoid vertical core from being tilted to center of gravity deviation direction, the keeper Using polystyrene material, upper sand mold and keeper just to position open up passage or flat rising head.

2. the casting mold of vertical core auxiliary locator is set as claimed in claim 1, it is characterised in that：The keeper The shape of the main core and vertical core of shape and both sides matches, or with the upper sand mold or lower sand mold of both sides and vertical core Shape match.

3. the casting mold of vertical core auxiliary locator is set as claimed in claim 2, it is characterised in that：The keeper is It is multiple, it is separately positioned on vertical core and is inclined to along center of gravity between the not homonymy of pre-tilt and main core or upper sand mold or lower sand mold.

4. the casting mold of vertical core auxiliary locator is set as claimed in claim 3, it is characterised in that：Upper sand mold with it is many Individual keeper just to position open up passage.

5. the casting mold of vertical core auxiliary locator is set as claimed in claim 3, it is characterised in that：Upper sand mold with it is many Individual keeper just to position be respectively provided with flat rising head.

6. a kind of localization method of the vertical core of auxiliary, it is characterised in that comprise the following steps：

It will be positioned under main core in core to nowel；

By under vertical core in core to nowel, wherein in the drag point of the lower sand mold of lower core print insertion of vertical core；

The inclined side placement positioning part of the heart is laid particular stress in vertical core, wherein the keeper uses polystyrene material；

Mould assembling, wherein the Shandong core print of vertical core is just to cope print.