CN208930772U - A kind of impregnation mold - Google Patents
A kind of impregnation mold Download PDFInfo
- Publication number
- CN208930772U CN208930772U CN201821033050.XU CN201821033050U CN208930772U CN 208930772 U CN208930772 U CN 208930772U CN 201821033050 U CN201821033050 U CN 201821033050U CN 208930772 U CN208930772 U CN 208930772U
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- Prior art keywords
- needle
- preformed member
- mold
- mould part
- recess portion
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Abstract
The utility model discloses a kind of impregnation molds, the mold has the first and second parts, first and second part is equipped with respective recess portion, the recess portion, which defines, can receive preformed member, wherein at least one injection device of mold allows to inject resin to impregnate the preformed member, wherein at least one described injection device has multiple tubular needles, and the multiple tubular needle can extend from least one of first recess portion and second recess portion allows injecting resin at least to penetrate the braided fabric of the preformed member.The injection needle of the utility model can penetrate the braided fabric of preformed member, in order to which resin to be injected into the braiding center of preformed member.
Description
Technical field
The utility model relates to injection molding technology fields, and in particular to a kind of impregnation mold.
Background technique
Resin transfer moulding (RTM) technique is a kind of manufacturing process, it is well known in the prior art, it includes
Fiber preform body at least one dry fabric outer wall is placed in the seal chamber in the mold that shape is recess portion, is used in combination
Dipping object fills the cavity, usually epoxy resin.The outer wall of preform or entire preform are usually to pass through braiding
The fiber of such as carbon fiber etc produces.For example, being produced in the manufacture context of the preformed member made of fiber completely
Raw basic three-dimensional braid, is then cut to the shape for the preform to be obtained, then places it in dipping former
In tool.Impregnation mold usually has lower part, has the cavity of a part for limiting recess portion, and may be affixed to lower part to close
The top of mold, and limit another part of recess portion.During mold closure, the lower part and top of the mold are in engaging zones
Place's adjoining.Once preform is placed in the cavity of the lower part of impregnation mold, and the top of mold has been closed in
On the lower part, in injection manipulation, the impregnated resin of preform, wherein liquid resin is injected into IMPR and casts
Mould.In the injection manipulation, partial vacuum is generated in a mold, and thermosetting resin is injected into impregnation mold, with
Just entire preformed member is impregnated.When it is propagated in a groove, the shape of recess portion is presented in resin.Then by preformed member and resin
Heating is to polymerize simultaneously therefore hardening resin.The resin polymerizeing in this way generates final rigid element, shape and recess portion
Shape match.Then impregnation mold is opened, final component is then taken out.The arrangement of performing member can produce tree in recess portion
The preferred path of rouge flowing.For example, these paths be located at along die edge or preformed member edge impregnation mold lower part and
The joint on top.Propagate more than impregnating the resin of preform rest part by the resin of these flow paths
Fastly.As a result, the non-homogeneous dipping of preform, this may cause porous zone and appears in the insufficient position of resin diffusion.It is logical
It cannot often predict the position of these porous zones, therefore can not specially arrange the injection areas for being intended to overcome this defect.It takes
Certainly in the space freely discharged by these preferred paths, porosity defects may be more or less significant.However, porosity defects are logical
Often can only just it be noted in part from injection in mold and after taking out.If porosity is too high, that is to say, that usually more than
3%, then part must be scrapped, because repair procedure can not be can be carried out.
In fact, RTM injection technique has another disadvantage that the difficulty encountered in thorough impregnation strand and is located at portion
Part weaves the space between stock.The defect of space dipping between strand and/or stock also leads to the gas hole defect in part
Occur.In addition, the dipping and progress of polymerization reaction are the non-homogeneous phenomenons influenced by part size and/or its difference in thickness.?
The difference of dipping and/or polymerization between two regions of component may cause the internal stress generated in moulding process, this is interior
Portion's stress has no significant effect to its service life and from the deformation after mold removal.For other purposes, it is also proposed that by having pottery
The other kinds of composite component of prefabricated component made of the composite material of porcelain basal body, this material is permeated by gas to harden.
There are also other shortcomings for this technical solution, in particular, the material penetrated into gaseous form penetrate into first it is pre-
The surface layer of formed body, to make its sealing.From that time, the substance of infiltration cannot penetrate the inside of precast body again.Therefore, exist
Before any new dipping of preform inner, it is necessary to by machined portions remove the material on surface layer.Final component
Manufacture needs the continuous circulation of material and dipping before the acquisition of final component.
Utility model content
The utility model is made mainly solving the technical problems that provide a kind of impregnation mold of composite material for manufacturing
Turbine engine components, the turbine engine components obtain by the preformed member that is formed by fibrous braid, the mould
Tool has the first mould part, the first recess of the first mould part and the first surface of preformed member and its second part
Second recess portion is complementary with the second surface of preformed member, and first and second part can be attached each other when the mold is closed
It connects, so that at least one injection device permission injecting resin that the first and second recess portions limit the wherein mold is described to impregnate
Preformed member, wherein at least one described injection device has multiple tubular needles, the injection needle can be from the injection
The first groove of at least one of needle and the second groove are relative at least one of the first surface and the second surface
Surface, and be configured at least penetrate the braided fabric of the preformed member, to allow the tree after mold closure
Rouge is injected while being at least transported to the center of the braided fabric.
Optionally, wherein needle is retractable at least one of the first mould part and the second mould part, and in institute
It states and is moved relative at least one of the first and/or second recess portion in the part to performing member between the extended position of needle
It is dynamic to penetrate fabric and retracted position, wherein the needle is withdrawn from from preform.
Optionally, wherein each of described first and second mould part is respectively provided with a needle and second more than first
Multiple needles, a needle more than described first and second are able to relative to first and second surface of the first and second recess portions, with
Just the braiding on the first and second surfaces is at least penetrated.
Optionally, wherein the needle of a needle more than described first is not arranged to the needle in face of more than described second a needles.
Optionally, wherein more than described first or each needle of second multiple needle respectively at least one first piece or the
Two pieces of rigid connections, described first piece or second piece of needle is parallel to each other, and the first or second block passes through accordingly
It is slided in parallel to preformed member in the direction of associated actuators and needle in first or second mould part.
Optionally, wherein each first or second mould part receives at least two the one or two second piece respectively, it
Be slidably fitted in first or second mould part, the stroke of each first or second block be arranged to allow needle
Head at least penetrates texture area of the preform corresponding to scheduled thickness relative to corresponding first or second surface respectively.
The beneficial effects of the utility model are:
The utility model proposes a kind of impregnation mold with injection needle, which can penetrate the volume of preformed member
Fabric, in order to which resin to be injected into the braiding center of preformed member.
Detailed description of the invention
Fig. 1-3 is the schematic diagram of longitudinal cross-section, shows the leaching of first embodiment method for closing according to the present utility model
Stain mold.
Fig. 4-6 is the beginning and end stage for the injecting step that the schematic diagram of longitudinal cross-section is the method for first embodiment.
Specific embodiment
The preferred embodiment of the utility model is described in detail below, so that the advantages of the utility model and feature energy
It is easier to be readily appreciated by one skilled in the art, to be more clearly defined the protection scope of the utility model.
Fig. 1-Fig. 6 shows the performing member 15 for being used to form turbine engine blade, but it is to be understood that the expression is not
The utility model is limited, and for example, component 16 can be another element made of composite material, such as fan hub volume elements
Part.In known manner, mold 18 has the first mould part 30, wherein the first surface of the first recess portion 32 and preformed member 15
34 is complementary.Mold 18 also has the second mould part 36, wherein second surface of second recess portion 38 substantially with preformed member 15
40 is complementary.The first mould part 30 is top in the figure, and the second mould part 36 is lower part.It should be understood that this configuration is not
The utility model is limited, and the first mould part and the second mould part 30,36 can be arranged vertically or with other direction
Arrangement.As shown in Figure 1, 2, the first and second parts 30,36 can be connected to each other during mold 18 is closed, hermetically to limit
The fixed cavity with the substantially comparable size of the component to be obtained.In the cavity, at least one injection device 42,44 allows to infuse
Enter resin to impregnate preform 15.Traditionally, this injection device is formed by the conduit for leading to inside grooves.With mold
The mold of same type may have multiple injection apparatus.It has been noticed, however, that conventional injection device do not allow it is preforming
The fiber homogeneous impregnation of body 15, this leads to gas hole defect occur in the part of completion.In order to overcome this disadvantage, this is practical new
Type proposes at least one injection device 42,44, with multiple end of tubular needle 46,48, for penetrating the braiding of preformed member 15
Object simultaneously conveys resin wherein.First mould part 30 and the second mould part 36 are respectively provided with injection device 42,44, tool
There are multiple needles 46 and 48.Particularly, a needle 46 more than first and second multiple needle 48 can be respectively from the first recess portions 32 and second
Recess portion 38 extends to penetrate braided fabric relative to the first and second surfaces 34,40 of performing member 15.Resin is closed in mold 18
The center of the braiding is at least injected into after closing and by resin transfer to the center of the braided fabric.Advantageously, first
Multiple needles 46 and the second spininess 48 are arranged in the whole surface towards the first and second surfaces 34,40, to actually pierce through
The entire texture of performing member 15.The size of needle depends on different parameters.Firstly, their length is configured to permit them
The thickness of the fiber of preform is penetrated to being enough to make fiber integrally impregnated depth.Secondly as syringe needle is tubulose, institute
Diameter with them is to require to be large enough to allow compromise of the resin between the diameter and sufficiently small diameter of inside circulation
As a result, to avoid damage prefabricated component any risk.Needle introduces between the fiber of preformed member, for example, syringe needle is straight
It is suitably sized that diameter, which is 1 millimeter, it is also to be noted that the end of needle is preferably taper, in order to which needle is in preform
Fiber stock between permeate.In the structure shown in Fig. 1,2, made as shown, performing member can be to be woven by three-dimensional fiber
At performing member, or the performing member being made of at least one layer of fiber braiding layer of insertion piece 28 is in both cases, more
A needle 46,48 is configured as only penetrating fabric, it should be appreciated that, this arrangement is not intended to limit the utility model.
Multiple needles 46,48 are configured as penetrating the braided fabric of preform 15 and remove before resin polymerization from thereon.
Although in fact, the utility model improves injection by allowing needle to penetrate the fabric of preformed member 15, but still needing setting
Multiple needles 46,48 are removed before rouge polymerization and before needle is no longer sewn from fabric.Therefore, the utility model is another
A important feature is, needle can retract the first and second mould parts 30,36, and be respectively relative in the part
One or second recess portion 32,38 can be moved into preformed member 15.Multiple needles 46,48 are retracted into the first and second mould parts at them
It is moved between 30 retracted position, that is to say, that they are not from the position that first or second recess portion 32,38 stretches out.Exist in syringe needle
In the retracted position of first and second mould parts 30,36, before needle passes through fabric, it should be appreciated that needle is not from the part
In specific first or second recess portion 32,38 it is prominent, therefore, do not interfere preformed member 15 in the first mould part and the second mold
Positioning in part 30,36.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.Finally, it should be noted that with
Upper embodiment is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to the foregoing embodiments to this reality
It is described in detail with novel, those skilled in the art should understand that: it still can be to foregoing embodiments
Documented technical solution is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of impregnation mold, for manufacturing the turbine engine components made of composite material, it is characterised in that: the turbine
Engine components are obtained by the preformed member formed by fibrous braid, and the mold has the first mould part, the first mould
Have the second of the second recess portion and preformed member of the first recess of part and the first surface of preformed member and its second part
Surface complementarity, first and second part can be attached to each other when the mold is closed, so that the first and second recess portions limit
At least one injection device of the fixed wherein described mold allows injecting resin to impregnate the preformed member, wherein described at least one
A injection device has multiple tubular needles, the injection needle can from the first groove of at least one of described injection needle and
Second groove penetrates the volume of the preformed member relative at least one surface in the first surface and the second surface
Fabric, to be infused while allowing and the resin is at least transported to the center of the braided fabric after mold closure
It penetrates.
2. a kind of impregnation mold according to claim 1, it is characterised in that: wherein needle be retractable into the first mould part and
At least one of second mould part, and between the extended position of the needle relative in the part first and/
Or second at least one of recess portion to performing member movement penetrate fabric and retracted position, wherein the needle is removed from preform
Out.
3. a kind of impregnation mold according to claim 1, it is characterised in that: wherein, first and second mould part
Each of be respectively provided with a needle more than first and more than second a needles, a needle is able to relative to institute more than described first and second
First and second the first and second surfaces of recess portion are stated, at least to penetrate the braiding on the first and second surfaces.
4. a kind of impregnation mold according to claim 3, it is characterised in that: wherein, the needle of a needle more than described first not by
It is arranged to the needle in face of more than described second a needles.
5. a kind of impregnation mold according to claim 3, it is characterised in that: wherein more than described first and more than second a needles
Each needle respectively at least one first piece or second piece be rigidly connected, described first piece or second piece of needle is parallel to each other,
And the first or second block is flat by the direction of associated actuators and needle in corresponding first or second mould part
It is slided to preformed member on row ground.
6. a kind of impregnation mold according to claim 5, it is characterised in that: wherein each first or second mould part point
Jie Shou not be at least two the one or two second piece, they are slidably fitted in first or second mould part, often
The stroke of a first or second block is arranged to the preform phase for allowing syringe needle at least to be penetrated respectively corresponding to scheduled thickness
For the texture area on corresponding first or second surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821033050.XU CN208930772U (en) | 2018-07-02 | 2018-07-02 | A kind of impregnation mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821033050.XU CN208930772U (en) | 2018-07-02 | 2018-07-02 | A kind of impregnation mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208930772U true CN208930772U (en) | 2019-06-04 |
Family
ID=66715677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821033050.XU Expired - Fee Related CN208930772U (en) | 2018-07-02 | 2018-07-02 | A kind of impregnation mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208930772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749041A (en) * | 2018-07-02 | 2018-11-06 | 江阴澄云机械有限公司 | A kind of impregnation mold |
-
2018
- 2018-07-02 CN CN201821033050.XU patent/CN208930772U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749041A (en) * | 2018-07-02 | 2018-11-06 | 江阴澄云机械有限公司 | A kind of impregnation mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 Termination date: 20210702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |