CN110667012A

CN110667012A - Composite material preforming mold and manufacturing method

Info

Publication number: CN110667012A
Application number: CN201910815050.8A
Authority: CN
Inventors: 王克坚; 朱生五
Original assignee: Beijing Changcheng Huaguan Automobile Technology Development Co Ltd
Current assignee: CH Auto Technology Co Ltd; Beijing Changcheng Huaguan Automobile Technology Development Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-01-10

Abstract

The invention relates to a composite material preforming mold and a manufacturing method thereof, wherein the composite material preforming mold comprises a mold body, the top end of the mold body is used for laying a preforming body, a plurality of air passage through holes are formed in the mold body, a demolding layer is arranged between the mold body and the preforming body, a plurality of through holes are formed in the demolding layer, the through holes in the demolding layer are communicated with the air passage through holes, air pipes are arranged in the air passage through holes, and the air pipes are connected with a high-pressure air source. The invention has simple structure, convenient operation and obvious effect, can realize automation and ensures the product quality.

Description

Composite material preforming mold and manufacturing method

Technical Field

The invention relates to the technical field of composite material preforming, in particular to a composite material preforming mold and a manufacturing method thereof.

Background

The composite material is a new material formed by optimizing and combining material components with different properties by applying an advanced material preparation technology, such as a carbon fiber material which is first applied in the field of automobiles, and the application of the carbon fiber material in the field of automobiles is more and more extensive due to the characteristics of light weight, safety and economy of the automobile carbon fiber.

The general curing time in the carbon fiber prepreg mould pressing process is less than the time of paving and pasting the preforming, so in order to improve production efficiency and machine utilization rate, a preforming mould is made outside a forming mould, the mould is only a single-sided mould and is only used for paving and pasting the prepreg into a shape which is close to a product and beneficial to forming, a required product preforming body is paved and pasted on the mould, and then the product preforming body is taken into the forming mould to be cured. However, due to the viscosity of the prepreg, the preformed body is often adhered to a preforming mold, and at present, the prepreg is directly paved on the molded surface of the solid preforming mold and manually peeled off from the mold surface, so that the product is deformed and layered when being taken, and the product quality is seriously influenced.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the problem that the preformed body is easy to deform and delaminate when being separated from the preformed mold in the prior art, so that the preformed mold for the composite material and the manufacturing method thereof are provided, which can prevent the preformed body from deforming, delaminating and other defects and ensure the product quality.

In order to solve the technical problem, the composite material preforming mold comprises a mold body, wherein the top end of the mold body is used for laying a preforming body, a plurality of air passage through holes are formed in the mold body, a demolding layer is arranged between the mold body and the preforming body, a plurality of through holes are formed in the demolding layer, the through holes in the demolding layer are communicated with the air passage through holes, air pipes are arranged in the air passage through holes, and the air pipes are connected with a high-pressure air source.

In one embodiment of the invention, the plurality of airway through holes are uniformly distributed along the die body.

In one embodiment of the invention, the release layer is a non-stick coating, a release cloth, or a release film.

In one embodiment of the invention, the diameter of the airway through-hole is 1mm-5 mm.

In one embodiment of the invention, the diameter of the airway through-hole is 3 mm.

In one embodiment of the invention, the composite material is a carbon fiber material.

The invention also provides a manufacturing method of the composite material preforming mold, which comprises the following steps: processing a die body, and processing a plurality of air passage through holes on the die body; inserting an air pipe into the air passage through hole; arranging a demolding layer on the surface of the mold body; and a plurality of through holes are formed in the demoulding layer, and the through holes are communicated with the air passage through holes.

In one embodiment of the present invention, a method for providing a release layer on a surface of the mold body comprises: and brushing a non-stick coating on the surface of the mold or sticking demolding cloth and a release film.

Compared with the prior art, the technical scheme of the invention has the following advantages:

according to the composite material preforming mold and the manufacturing method, high-pressure air passes through the through hole through the air pipe and is blown onto the preforming body, the structure is simple, the operation is convenient, the effect is obvious, the labor can be reduced, the automation is realized, the bonding of the preforming body and the preforming mold can not be caused, the deformation and the layering of the preforming body are avoided, and the product quality is ensured.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic view of a composite preform mold of the present invention;

FIG. 2 is a flow chart of a method of making a composite preform mold of the present invention.

Detailed Description

Example one

As shown in fig. 1, the embodiment provides a composite material preforming mold, which includes a mold body 11, a top end of the mold body 11 is used for laying a preform 21, wherein the mold body 11 is provided with a plurality of air passage through holes 12, a demolding layer is arranged between the mold body 11 and the preform 21, the demolding layer is provided with a plurality of through holes, the through holes on the demolding layer are communicated with the air passage through holes 12, an air pipe 13 is arranged in the air passage through holes 12, and the air pipe 13 is connected with a high-pressure air source.

The composite material preforming mold in the embodiment comprises a mold body 11, wherein the top end of the mold body 11 is used for laying a preforming body 21, a plurality of air passage through holes 12 are formed in the mold body 11, a demolding layer is arranged between the mold body 11 and the preforming body 21, demolding of the preforming body 21 is facilitated through the demolding layer, a plurality of through holes are formed in the demolding layer, the through holes in the demolding layer are communicated with the air passage through holes 12, air pipes 13 are arranged in the air passage through holes 12, the air pipes 13 are connected with a high-pressure air source, so that high-pressure air passes through the air pipes 13 and is blown onto the preforming body 21, the preforming body 21 is blown off from the surface of the preforming mold, no bonding force is generated when the preforming body 21 is separated from the mold, and defects such as deformation or layering of the preforming body 21 are prevented, the quality of the product is ensured.

The plurality of air duct through holes 12 are uniformly distributed along the mold body 11, so that high-pressure air is uniformly blown onto the preform 21, and local deformation or layering is avoided. The release layer is a non-stick coating, release cloth or release film, thereby facilitating the release of the preform 21. The diameter of the air passage through hole is 1mm-5mm, and the high-pressure air is 0.2-1.2mpa, so that the preformed body 21 can be blown off from the surface of the preformed die. Specifically, when the diameter of the air passage through hole is 3mm, the preform 21 can be quickly blown off from the surface of the preform mold.

In this embodiment, the composite material is a carbon fiber material.

Example two

As shown in fig. 2, the present embodiment provides a method for manufacturing a composite material pre-forming mold, including the following steps: step S1: processing a die body 11, and processing a plurality of air flue through holes 12 on the die body 11; step S2: inserting a gas pipe 13 into the gas passage through hole 12; step S3: arranging a demolding layer on the surface of the mold body 11; step S4: a plurality of through holes are formed in the demoulding layer, and the through holes are communicated with the air passage through holes 12.

In the method for manufacturing a composite material preforming mold according to this embodiment, in step S1, the mold body 11 is processed, and the plurality of air passage through holes 12 are processed on the mold body 11; in the step S2, inserting an air tube 13 into the airway through-hole 12 to facilitate blowing air into the airway through-hole 12 through the air tube 13; in step S3, a release layer is provided on the surface of the mold body 11, and the release layer facilitates the release of the preform 21; in step S4, a plurality of through holes are formed in the mold release layer, and the through holes are communicated with the air duct through holes 12, when high-pressure gas is introduced into the gas pipe 13, the high-pressure gas passes through the through holes through the gas pipe 13 and blows to the preform 21, which is beneficial to blowing off the preform 21 from the surface of the preforming mold, and at this time, the preform 21 can be easily taken away by applying force from above, so that it is ensured that there is no adhesive force when the preform 21 is separated from the preforming mold, and deformation and delamination of the preform 21 are avoided.

The method for arranging the demolding layer on the surface of the mold body comprises the following steps: and (3) coating a non-stick coating on the surface of the mold or sticking demolding cloth and a release film on the surface of the mold, so that demolding of the preforming body 21 is facilitated.

When the mold is used, the preformed body 21 is laid on the demolding layer, when the mold needs to be taken, high-pressure air is introduced into the air pipe 13 to blow the preformed body 21 away from the surface of the preformed mold, at the moment, the preformed body 21 can be easily taken away by applying force from the upper part, the preformed body 21 is not adhered to the preformed mold, and the deformation and the layering of the preformed body 21 are avoided.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A composite material preforming mold is characterized in that: the mould comprises a mould body, the top of mould body is used for laying the preforming body, wherein be equipped with a plurality of air flue through-holes on the mould body, the mould body with be equipped with the layer of drawing of patterns between the preforming body, be equipped with a plurality of through-holes on the layer of drawing of patterns, just through-hole on the layer of drawing of patterns with the air flue through-hole is linked together, be equipped with the trachea in the air flue through-hole, the trachea links to each other with high pressurized air source.

2. The composite preform mold of claim 1, wherein: the air flue through holes are uniformly distributed along the die body.

3. The composite preform mold of claim 1, wherein: the demolding layer is a non-stick coating, demolding cloth or a demolding film.

4. The composite preform mold of claim 1, wherein: the diameter of the air passage through hole is 1mm-5 mm.

5. The composite material preforming tool as claimed in claim 4, wherein: the diameter of the air passage through hole is 3 mm.

6. The composite preform mold of claim 1, wherein: the composite material is a carbon fiber material.

7. The manufacturing method of the composite material preforming mold is characterized by comprising the following steps of:

step S1: processing a die body, and processing a plurality of air passage through holes on the die body;

step S2: inserting an air pipe into the air passage through hole;

step S3, arranging a demolding layer on the surface of the mold body;

step S4: and a plurality of through holes are formed in the demoulding layer, and the through holes are communicated with the air passage through holes.

8. A method of making a composite preform mold as in claim 7, wherein: the method for arranging the demolding layer on the surface of the mold body comprises the following steps: and brushing a non-stick coating on the surface of the mold or sticking demolding cloth and a release film.