RU2723684C2 - Article forming method - Google Patents

Abstract

FIELD: technological processes.SUBSTANCE: group of inventions relates to methods of forming articles from fluid hardening materials and can be used in aircraft engineering, shipbuilding, automotive industry and other industries. Method of forming articles comprises producing a set of shaping elements and a set of support elements by 3D printing method, included in the forming device, forming device is assembled so that set of support elements covers set of shaping elements, at that providing gap between elements, into which is then supplied fluid, hardening with time material, and article is formed in form of connection of forming elements with hardened material.EFFECT: technical result is production of products of complex shape.7 cl, 3 dwg

Description

The invention relates to methods of forming products from fluid, hardening materials over time and can be used in aircraft, shipbuilding, automotive and other industries.

A known method of forming products consisting in the fact that in the forming device in the form of a mold, form-forming elements with a gap between them are arranged. (see PCT WO 2007/128722 A1)

In this case, plastic forming elements previously obtained by injection molding or metal forming elements previously obtained by traditional machining are used.

In the gap between the forming elements serves fluid material, which in the process of forming the product glues the forming elements into a single unit. The result is a product consisting of various layers glued together by an intermediate layer.

The known method allows to obtain products with different properties of the layers, but does not allow cost-effective to form products of complex structure.

The method of forming products according to PCT WO 2007/128722 A1 in technical essence is closest to the claimed invention and is taken in this application as a prototype.

The purpose of the present invention is to achieve a technical result that will allow cost-effective to form products of complex structure from fluid, hardening materials over time.

The technical result that allows to achieve this goal is achieved due to the fact that a fluid, hardening over time material is supplied to a forming device containing a forming element made by 3D printing, and the product is formed in the form of a connection of the forming element with the hardened material filling it.

A possible embodiment of the devices is that a 3D printing method makes a set of forming elements and a set of support elements included in the forming device, assemble the forming device so that the set of supporting elements covers a set of forming elements, while providing a gap between the elements in which then serves a fluid, hardening material over time, and the product is formed in the form of a connection of the forming elements with the hardened material.

Wherein:

• filler is placed in the forming element, and the product is formed as a composite compound of the filler with the filling forming element;

• the product is formed in the form of a composite compound from a forming element, a filler and a material filling the forming element;

• a permeable porous structure is created in the forming element by 3D printing, which is filled with a fluid material that hardens over time during the formation of the product;

• on the surface of the forming element by the method of 3D printing create irregularities, which during the formation of the product are filled with fluid, hardening material over time;

• fluid, hardening over time material is supplied under pressure;

• The supply of a fluid, time hardening material is ensured by creating a vacuum in the forming device.

The essence of the invention is disclosed in the description and in the accompanying drawings, where

In FIG. 1 shows a general diagram of the implementation of the method of forming products from fluid, hardening materials over time.

In FIG. 2 shows an embodiment of a forming device for implementing a method of forming products from fluid, hardening materials over time.

In FIG. 3 shows an embodiment of the formed article.

The method of forming products is implemented as follows:

Using 3D printing, a set of forming elements 1 and a set of supporting elements 2 are made.

Auxiliary elements 3 (for example, fixing), together with the forming elements 1 and supporting elements 2 are part of the forming device 4.

The forming device 4 is assembled so that a set of supporting elements 2 covers a set of forming elements 1.

From components 5 and 6 in the mixer 7 form a fluid, over time hardening material 8, which is fed into the gap 9 of the forming device 4.

The final product 10 is formed in the form of a connection of the forming elements 1 with the hardened material 11.

The technical result - the ability to form products of complex structure is achieved due to the fact that the forming elements (element) are made by 3D printing.

The following embodiments of the invention are possible:

• components are supplied to the forming device under pressure;

• manage the process using a numerical program method;

•

• Support elements are made by 3D printing, ensuring that the shape of the inner surface of the support element matches the shape of the outer surface of the forming element;

• provide clearance along the contour of the closure of the forming elements, and an excess;

• the flowing material hardening with time supplied to the forming device is displaced into the specified gap;

• during the formation of the product, the forming element is heated;

• one of the components is an epoxy resin.

Claims (7)

1. The method of forming products, which consists in the fact that a fluid, hardening material over time is fed into a forming device made up of a forming element made by 3D printing and a supporting element covering the forming element, wherein the product is formed as a compound of the forming element made by the method 3D printing and hardened material over time. 2. The method of forming products, which consists in the fact that 3D printing method produces a set of forming elements and a set of supporting elements included in the forming device, so that the shape of the inner surface of the supporting elements corresponds to the shape of the outer surface of the forming elements, assemble the forming device so that the set of supporting elements covers a set of forming elements between which provide a gap into which a fluid, hardening material is supplied, the product is formed in the form of a connection of the forming elements with the hardened material. 3. The method according to PP. 1, 2, which consists in the fact that the filler is placed in the forming device, and the product is formed in the form of a composite compound of the forming elements, the filler and the hardened material. 4. The method according to PP. 1, 2, which consists in the fact that a 3D-printing method creates a permeable porous structure in the forming element, which, during the formation of the product, is filled with a fluid material that hardens over time. 5. The method according to PP. 1, 2, which consists in the fact that on the surface of the forming element by 3D printing create irregularities, which during the formation of the product are filled with a fluid, hardening material over time. 6. The method according to PP. 1, 2, which consists in the fact that a fluid, hardening over time material is supplied under pressure. 7. The method according to PP. 1, 2, which consists in the fact that the supply of fluid, hardening over time material is ensured by creating a vacuum in the forming device.

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