CN201659260U

CN201659260U - Easy-demolding mold

Info

Publication number: CN201659260U
Application number: CN2010201444350U
Authority: CN
Inventors: 黄金亮; 林景溪
Original assignee: QUANZHOU TENGDA FINE CASTING CO Ltd
Current assignee: QUANZHOU TENGDA FINE CASTING CO Ltd
Priority date: 2010-03-23
Filing date: 2010-03-23
Publication date: 2010-12-01
Anticipated expiration: 2020-03-23

Abstract

The utility model discloses an easy-demolding mold, which is used for forming a wax mold with perforated holes on the circumferential wall. The easy-demolding mold comprises an upper mold and a lower mold, wherein the lower mold is provided with a die cavity, the upper mold is fixedly provided with a mold core capable of penetrating through the die cavity, through holes, core rods, a core rod seat and an elastic element are also arranged on the circumferential wall of the lower mold, the through holes correspond to the perforated holes of the wax mold, the core rods can be glidingly penetrated and arranged in the through holes, the core rod seat is formed at the outer side of the core rods, both ends of the elastic element are respectively connected on the lower mold and the core rod seat, the core rods and the through holes are in a sealed state, the core rod seat is provided with an inclined end surface, the upper mold is connected with a core rod press plate, and the core rod press plate is also provided with an inclined surface which is matched with the inclined end surface of the core rod seat and pushes the inclined end surface to move in the direction towards the wax mold. The demolding working procedure of the utility model can be completely only through driving the upper mold without any additional working procedure, further, the demolding working procedure is greatly simplified, the demolding efficiency can be improved, and at the same time, the forming quality of the wax mold can be ensured.

Description

A kind of mould of the easy demoulding

Technical field

The utility model relates to the mould in the precision-investment casting field, relates to a kind of mould that can realize the demoulding when the moulding wax-pattern fast in particular.

Background technology

Precision-investment casting is a kind of casting technique of cutting less or not having cutting, is the technology of an excellence in the casting industry, and its application is very extensive.It is not only applicable to the casting of all kinds, various alloys, and the casting dimension accuracy of producing, surface quality are than other casting method height, even other casting method be difficult to cast complexity, high temperature resistant, the foundry goods that is not easy to process, all can adopt precision-investment casting to cast.Existing investment precision casting technology is realized by following operation:

1, make metal pattern: according to the pattern of detail of design making workpiece, pattern generally is made of aluminum;

2, make wax-pattern: wax is injected in the pattern, wax-pattern is taken out after waiting the wax cooling, at this moment wax-pattern consistent with the natural scale of workpiece (actual size is amplified to some extent according to casting shrinkage rates);

3, hang sand: the wax-pattern surface is stained with, is stained with Star to certain thickness with casting model powder;

4, dewax: the wax-pattern behind the extension sand is put into water and is boiled boiling of wax, finally stays next arenaceous shell;

5, roasting: arenaceous shell is carried out roasting, make it have certain intensity;

6, casting: molten iron is poured in the arenaceous shell after the roasting, waits the molten iron cooling back demoulding promptly to obtain foundry goods.

When the moulding wax-pattern, mould of the prior art generally includes upper die and lower die, and this counterdie has die cavity, this patrix then is installed with the core rod that can penetrate in this die cavity, be reserved with the space between this core rod and this counterdie, this space promptly is full of for liquid wax, and then forms wax-pattern.

For the wax-pattern that has a plurality of perforation on the perisporium, it is when moulding, perisporium that often need the counterdie a plurality of plugs that number and position are complementary that are provided with and bore a hole, this plug has occupied the space of respective perforations, so when the moulding wax-pattern, liquid wax can't occupy this space, and then has formed perforation structure on wax-pattern.Though this method can reach basic effect, but, when entire die is carried out stripping process, except need lift the part of the upper die, also must individually a plurality of plugs that are positioned on the counterdie perisporium be extracted one by one, the wax-pattern that forms out could be taken out like this, so its stripping process complexity, especially when this wax-pattern has the more perforation of number, be difficult to guarantee the demoulding efficiency of mould especially, complicated simultaneously program also can cause mould heavy wear, and causes the low defective of production precision.

In view of this, the inventor has this case to produce at the above-mentioned defective further investigation of existing mold then.

The utility model content

The purpose of this utility model is to provide a kind of mould of the easy demoulding, to solve the complicated and low problem of demoulding efficiency of prior art stripping process when moulding has the wax-pattern of a plurality of perforation.

In order to reach above-mentioned purpose, solution of the present utility model is:

A kind of mould of the easy demoulding, be used for the wax-pattern that the moulding perisporium has perforation, comprise upper die and lower die, this counterdie has die cavity, this patrix then is installed with the core rod that can penetrate in this die cavity, wherein, also have on this counterdie perisporium and this wax-pattern corresponding through hole of boring a hole, be located in the plug in the through hole slidably, be formed on the mandrel holder in the plug outside and two ends and be connected to elastic component on counterdie and the mandrel holder, this plug and this through hole are the sealing shape, this mandrel holder has inclined end face, this patrix is connected with the plug pressing plate, and this plug pressing plate also has and is complementary with this mandrel holder inclined end face and promotes the inclined-plane of this inclined end face towards the motion of cere direction.

Further, this perforation is for a plurality of, and this through hole, plug, mandrel holder, elastic component and plug pressing plate also correspondingly are set to a plurality of.

Further, these a plurality of plug pressing plates are wholely set in the form of a ring.

Further, this plug and this mandrel holder are one-body molded.

After adopting said structure, the mould of the easy demoulding that the utility model relates to is when carrying out the matched moulds operation, carrying out along with this patrix pressing action, come in contact gradually between the inclined-plane of this patrix plug pressing plate and the inclined end face of this mandrel holder, thereby make this mandrel holder overcome the active force of elastic component, thereby this plug is pushed in the through hole of counterdie, and finally occupy the space of this wax-pattern perforation, thereby form the perforation structure of wax-pattern; And the mould of the easy demoulding that the utility model relates to is when carrying out stripping process, because this patrix band this plug pressing plate and is moved upward, thereby make this mandrel holder break away from the effect of replacing of this plug pressing plate, this mandrel holder will be under the effect of elastic component, drive the perforation that plug breaks away from wax-pattern voluntarily, so stripping process of the present utility model only need drive patrix and get final product, and need not any subsidiary operation, and then simplified stripping process greatly, improve the efficient of the demoulding, and guaranteed the Forming Quality of wax-pattern simultaneously.

Description of drawings

The cutaway view of the mould of a kind of easy demoulding that Fig. 1 relates to for the utility model when matched moulds;

The cutaway view of the mould of a kind of easy demoulding that Fig. 2 relates to for the utility model when the part die sinking;

Among the figure:

Mould 100 patrixes 1

Core rod 11 plug pressing plates 12

Inclined-plane 121 counterdies 2

Die cavity 21 through holes 22

Plug 23 mandrel holders 24

Inclined end face 241 elastic components 25

Wax-pattern 3 perforation 31

The specific embodiment

In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.

As shown in Figures 1 and 2, the structural representation of the mould 100 of a kind of easy demoulding that it relates to for the utility model when matched moulds and part die sinking, the mould 100 that the utility model relates to mainly is to be applied to the wax-pattern 3 that the moulding perisporium has perforation 31, it comprises patrix 1 and counterdie 2, this counterdie 2 has die

cavity

21,1 of this patrix is installed with the core rod 11 that can penetrate in this die cavity 21, for this patrix 1, counterdie 2 and core rod 11, it is all similar with structure of the prior art, so be not described in detail, will be described in detail improvement of the present utility model below:

Have through hole 22, plug 23, mandrel holder 24, elastic component 25 on these counterdie 2 perisporiums, this patrix 1 then also is connected with plug pressing plate 12.This through hole 22 is formed on the perisporium of counterdie 2 and is corresponding with the perforation 31 of this wax-pattern 3, and promptly the number of this through hole 22 equates with the number of this perforation 31, and each through hole 22 is all corresponding with one 31 positions of boring a hole again; This plug 23 is located in the through hole 22 slidably, and is the sealing shape with this through hole 22, thereby prevents that liquid wax from entering in this through hole 22, and then guarantees the sliding space of this plug 23 in through hole 22; This mandrel holder 24 is formed on the outside of plug 23, the independent sector that it can link to each other with this plug 23, can also for these plug 23 integrated structures, this mandrel holder 24 also has inclined end face 241; These elastic component 25 two ends are connected on counterdie 2 and the mandrel holder 24, and order about this mandrel holder 24 towards the direction motion away from this counterdie 2, and it is preferably stage clip; This plug pressing plate 12 also has inclined-plane 121, and this inclined-plane 121 can be complementary with these mandrel holder 24 inclined end faces 241, drives the effectiveness of this mandrel holder 24 towards the motion of wax-pattern direction thereby play.

Need to prove that when this wax-pattern 3 had a plurality of perforation 31, this through hole 22, plug 23, mandrel holder 24, elastic component 25 and plug pressing plate 12 also correspondingly were set to a plurality of, promptly its number and position all are relative set.When this plug pressing plate 12 when being a plurality of, and when this a plurality of perforation 31 in the form of a ring the time, these a plurality of plug pressing plates 12 can directly be wholely set in the form of a ring, and has the upper and lower of being when being provided with when these a plurality of perforation 31, it can also be wholely set in the form of a ring, only needs to descend plug pressing plate 12 mandrel holder 24 places formation chamfering above process of direction to get final product.Certainly, the concrete shape of these a plurality of perforation and the concrete shape of these a plurality of plug pressing plates 12 do not limit protection domain of the present utility model, as long as it can disposable realization pressing.

Below in conjunction with Fig. 1 and Fig. 2, come matched moulds of the present utility model and die sinking process are described in detail:

As shown in Figure 1, the mould 100 of the easy demoulding that relates to when the utility model is when carrying out the matched moulds operation, carrying out along with this patrix 1 pressing action, come in contact gradually between the inclined-plane 121 of this patrix 1 plug pressing plate 12 and the inclined end face 241 of this mandrel holder 24, thereby make this mandrel holder 24 overcome the active force of elastic component 25, and then this plug 23 is pushed in the through hole 22 of counterdie 2, and finally occupy the space of this wax-pattern 3 perforation 31, so when cast, this liquid wax can't cover this space, and has finally formed perforation 31 structures of wax-pattern 3.

As shown in Figure 2, the mould 100 of the easy demoulding that relates to when the utility model is when carrying out stripping process, because this patrix 1 is being with this plug pressing plate 12 to move upward, thereby make this mandrel holder 24 break away from the effect of replacing of this plug pressing plate 12, at this moment, this mandrel holder 24 will drive plug 23 and break away from the perforation 31 of wax-pattern 3, thereby make this wax-pattern 3 can realize easily when the demoulding under the effect of elastic component 25 voluntarily.

In sum, the mould 100 of the easy demoulding that the utility model relates to only needs to drive patrix 1 and gets final product, and need not any subsidiary operation, and then simplified stripping process greatly when the demoulding, has improved the efficient of the demoulding, and has guaranteed the Forming Quality of wax-pattern 3 simultaneously.

The foregoing description and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.

Claims

1. the mould of an easy demoulding, be used for the wax-pattern that the moulding perisporium has perforation, comprise upper die and lower die, this counterdie has die cavity, this patrix then is installed with the core rod that can penetrate in this die cavity, it is characterized in that, also have on this counterdie perisporium and this wax-pattern corresponding through hole of boring a hole, be located in the plug in the through hole slidably, be formed on the mandrel holder in the plug outside and two ends and be connected to elastic component on counterdie and the mandrel holder, this plug and this through hole are the sealing shape, this mandrel holder has inclined end face, this patrix is connected with the plug pressing plate, and this plug pressing plate also has and is complementary with this mandrel holder inclined end face and promotes the inclined-plane of this inclined end face towards the motion of cere direction.

2. the mould of a kind of easy demoulding as claimed in claim 1 is characterized in that, this perforation is for a plurality of, and this through hole, plug, mandrel holder, elastic component and plug pressing plate also correspondingly are set to a plurality of.

3. the mould of a kind of easy demoulding as claimed in claim 2 is characterized in that, these a plurality of plug pressing plates are wholely set in the form of a ring.

4. the mould of a kind of easy demoulding as claimed in claim 1 is characterized in that, this plug and this mandrel holder are one-body molded.