CN210758691U

CN210758691U - Demoulding tool for inverted V-shaped integral composite material part

Info

Publication number: CN210758691U
Application number: CN201921357154.0U
Authority: CN
Inventors: 郭强; 徐恒元; 孙振萍; 何凯; 陈泽奎; 余青
Original assignee: Chengdu Aircraft Industrial Group Co Ltd
Current assignee: Chengdu Aircraft Industrial Group Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-06-16
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a drawing of patterns instrument of whole combined material part of lambda type. The demolding tool comprises two pull rods (1) connected through an arc-shaped part, the other ends of the two pull rods (1) are respectively provided with a hook (2) which is bent inwards and provided with a mold-lifting sharp corner, and the sizes of the pull rods and the hook and the included angle between the two pull rods are determined according to the structure and the size of the inverted V-shaped integral composite part. During the drawing of patterns, will drawing of patterns closed angle of drawing of patterns instrument inserts respectively between a type whole combined material part and the frock profile, the pulling drawing of patterns instrument applys ascending external force to the combined material part, simultaneously, inputs the compressed gas in the gap of combined material part and frock profile through vacuum line, finally realizes the drawing of patterns and does not harm the effect of combined material part under drawing of patterns instrument and compressed gas's combined action.

Description

Demoulding tool for inverted V-shaped integral composite material part

Technical Field

The utility model belongs to the technical field of the combined material part is made, in particular to hyperboloid and inside and outside profile all have the drawing of patterns instrument of the whole combined material part of jumbo size lambda type of cooperation relation.

Background

For resin-based composite material parts molded by adopting an autoclave technology, binding force can be generated between a resin matrix and a tool in the molding process, so that the parts can be tightly attached to the tool after being completely cured, and external force is generally required to knock and pry the edges in the process of demolding the parts. However, the mode is only suitable for parts with simple profiles, small curvatures and less changes, and for composite parts with complex profiles, large curvatures and complex matching relations between the film sticking surfaces and the tool, such as reversed V-shaped integral composite parts, the surface of the part is easily damaged and destroyed by external force knocking, and internal defects of the part are generated or enlarged by the external force when the external force is large. Meanwhile, the traditional demoulding mode has higher comprehensive quality requirement on operators, higher danger coefficient, high labor intensity and low working efficiency.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned circumstances of the prior art, the utility model aims at providing a hyperboloid and interior profile all have the demoulding instrument of the whole combined material part of Λ type of mating relationship. The demolding tool avoids mechanical external force damage and high-intensity manual labor of the inverted V-shaped integral composite material part in the demolding process, and can improve the production efficiency and quality of the part.

The above object of the present invention is achieved by the following technical solutions:

to achieve the above object, according to the utility model, a drawing of patterns instrument of whole combined material part of Λ type is provided, its characterized in that includes two pull rods that link to each other through convex part, the other end of two pull rods is equipped with the incurving respectively, takes the hook of drawing die closed angle, the size of pull rod and hook to and the contained angle between two pull rods is according to the structure and the size determination of the whole combined material part of Λ type.

Furthermore, the die drawing sharp corner is a wedge-shaped sharp corner to prevent damage to parts and the tooling profile.

Wherein the length of the pull rod is 500-700 mm, the included angle between the two pull rods is 30-80 degrees, and the bending radius of the hook is 10-30 mm.

Further, the demolding tool is integrally made of a soft alloy, the thickness of the soft alloy is 2-5 mm, and the width of the soft alloy is 50-100 mm.

Utilize the utility model discloses a demolding tool can make the complicated whole combined material part of lambda type of profile leave the frock mould gradually under compressed gas's combined action, has avoided the mechanical external force damage and the high strength hand labor of the complicated part of profile in drawing of patterns in-process, has that the suitability is strong, the drawing of patterns difficulty is little, working strength is low, work efficiency is high, instrument characteristics such as with low costs.

Drawings

FIG. 1 is a schematic structural view of a demolding tool of the present invention;

FIG. 2 is a top view of the demolding tool of the present invention;

FIG. 3 is a schematic view of a composite part to be film molded.

Detailed Description

For a clearer understanding of the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of the demolding tool of the present invention, and fig. 2 is a top view of the demolding tool of the present invention. Referring to fig. 1 and 2, the utility model discloses a drawing of patterns instrument of whole combined material part of Λ type includes two pull rods 1 that link to each other through convex part, the other end of two pull rods 1 is equipped with the incurving respectively, takes the hook 2 of drawing the mould closed angle, the size of pull rod 1 and hook 2 to and the contained angle omega between two pull rods 1 is according to the structure and the size determination of the whole combined material part of Λ type. In order to prevent damage to parts and tool profiles, the drawing sharp corner is preferably a wedge-shaped sharp corner. For ease of processing and forming, the demolding tool may be integrally constructed from a soft alloy. The thickness T = 2-5 mm, the width H = 50-100 mm, the length L = 500-700 mm, the included angle omega between the two pull rods is 30-80 degrees, and the bending radius r = 10-30 mm.

Specifically, in this embodiment, in the case of an Λ -type monolithic composite part to be demolded of size 350mm at an included angle of 30 ° as illustrated in fig. 3, the parameters of the demolding tool of the present invention are: t =3mm, H =60mm, L =55mm, ω =60 °, r =15 mm.

Use the utility model discloses a when drawing of patterns instrument carries out the drawing of patterns, slowly fill in between the profile of combined material part 3 and frock mould 4 respectively with the drawing of patterns closed angle of drawing of patterns instrument's hook 2 earlier. After the sharp angle of the drawing die is placed at the designated position, the pull rod 1 is pulled upwards slowly at the circular arc part of the demoulding tool, and the upward demoulding force is exerted on the composite material part 3 through the hook 2. After a gap appears between the molded surfaces of the composite part 3 and the tooling mold 4, compressed air (the compressed air pressure is 0.5 Mpa) is injected between the surfaces of the composite part 3 and the tooling mold 4 through a vacuum pipeline (the duration is 30s), the composite part 3 and the tooling mold 4 are gradually separated from each other by uniform external force along with the increase of the amount of the compressed gas, and finally the efficient and safe demolding of the composite part 3 is realized under the combined action of a demolding tool and the compressed gas without damaging the composite part 3.

Claims

1. The utility model provides a drawing of patterns instrument of whole combined material part of Λ type which characterized in that includes two pull rods (1) that link to each other through convex part, the other end of two pull rods (1) is equipped with incurving respectively, takes the hook (2) of drawing the sharp angle, the size of pull rod (1) and hook (2) to and the contained angle between two pull rods (1) is according to the structure and the size determination of whole combined material part of Λ type.

2. The demolding tool of claim 1, wherein said draft angle is a wedge angle.

3. The demolding tool as claimed in claim 1, wherein the pull rod has a length of 500 to 700mm, an included angle between two pull rods is 30 to 80 °, and a bending radius of the hook is 10 to 30 mm.

4. The knock-out tool according to claim 1, wherein the knock-out tool is integrally formed of a soft alloy having a thickness of 2 to 5mm and a width of 50 to 100 mm.