RU2309044C1 - Form manufacturing method for articles of laminate polymeric composition materials - Google Patents

Abstract

FIELD: machine engineering, possibly contact molding of envelope articles of laminate polymeric composition materials such as organic plastics.

SUBSTANCE: method comprises steps of applying onto reference part release layer and successive layers of composition material for forming parting surface and placing closing and fixing members; placing plate onto front surface of reference part and onto working surface of base just close to them; then coinciding working plane of said plate with symmetry plane of reference part; placing each next layer of glass plastics of form half equidistantly relative to front surface of reference part, working plane of base and working plane of plate; removing said plate after polymerization of form half; applying onto prepared plane of form half release layer and similarly molding and polymerizing second form half symmetrical to first one while binding both form halves along their ridge by means of material of second form half; forming openings for placing closing and fixing members after fastening flanges of form halves with base; finally dismounting structure after trimming allowance on ridge till zone of guaranteed absence of binding glass plastics in parting plane.

EFFECT: development of process for molding form that features improved operational reliability, increased useful life period and enhanced quality.

2 cl, 7 dwg

Description

The invention relates to the field of mechanical engineering and can be used for contact molding of shell products, for example armored helmets, from layered polymer composite materials, such as organoplastics.

Known bulletproof helmet and the method of its manufacture according to the patent of Germany No. 2334941 from 10.31.72, MKI F41H 1/04.

Known bulletproof helmet and the method of its manufacture according to the application of the UK No. 2148185, dated 05/30/1985, B32B 7/08.

A known method of manufacturing a mandrel for forming high-precision composite shells according to the patent RU No. 2177110, MKI V29C 39/10, including the manufacture of shell forms on the reference part.

Also known is a method of manufacturing a shell mold for products from layered polymer composites according to a. from. USSR No. 197145 of 08/03/1964, MKI V29C 39/02, in which a separation layer, for example a standard helmet, is applied with a separation layer, successive layers of composite material, for example fiberglass, with the formation of the connector surface and the installation of locking and fixing elements.

The disadvantage of this method is the low reliability of the form, its short service life and low quality of the working surface of the form.

A known method of manufacturing a mold as the closest in technical essence and the achieved result is selected as a prototype.

The technical problem to be solved by the claimed invention is directed is the development of the manufacturing technology of the mold, increased reliability, increased service life and higher quality.

The technical result that can be obtained by solving the technical problem for the proposed method is to implement the manufacturing technology of the mold with increased operational reliability by increasing the reliability of mold closure, increasing the mold service life due to less wear of the locking and fixing elements, as well as improving the quality of the work surface shape by reducing the mismatch of the latter in the plane of the connector.

The task is to achieve a technical result for a method for manufacturing a mold for products from layered polymer composites, in which a separation layer, successive layers of a composite material, for example fiberglass, is applied to the fixed part, for example, a standard helmet, with the formation of the connector surface and the installation of locking and fixing elements, and in accordance with the invention on the front surface of the helmet and the working plane of the base close to them set t plate and combine the working plane of the latter with the plane of symmetry of the helmet, each successive layer of fiberglass half-mold is laid equidistant to the front surface of the helmet, the working plane of the base and the working plane of the plate, then, after polymerization of the half-mold, the plate is removed, a separation layer is applied to the formed plane of the half-mold and the second half-mold, symmetrical to the first, is molded and polymerized in the same way, fastening both half-molds along their crest with the material of the second half-mold, holes I, for placement of locking and fixing elements, perform each in both half-molds after fastening the half-flanges of half-molds, for example with clamps, to the base, and, finally, the structure is finally disassembled after cutting the allowance on the ridge to the zone with a guaranteed absence of fiberglass binder in the connector plane, while fixing elements, for example, shift-sleeve pairs, are installed before disassembling the form on an adhesive compatible with a binder of fiberglass half-molds, for example epoxy, on the adhesive surfaces of w and lock pins operate increasing their grooves and protrusions area.

Distinctive features of the method are the following:

- on the front surface of the helmet and the working plane of the base, a plate is installed close to them and the working plane of the latter is aligned with the plane of symmetry of the helmet - this is a significant sign, it involves new operations and a new sequence of their implementation, aimed at solving the problem with achieving a technical result, to increase reliability the work of the mold by increasing the reliability of the closure of the mold, as it sets the optimal location of the plane of the connector and layers of material of the mold;

- each successive layer of fiberglass half-mold is laid equidistantly on the front surface of the helmet, on the working plane of the base and on the working plane of the plate - this is an essential sign, it provides for new operations and a new sequence of their implementation, aimed at solving the problem with achieving a technical result, increasing the reliability of the mold by improving the reliability of the clamping of the form, as it provides for the optimal location of the plane of the connector and layers of material of the form;

- after polymerization of the half-mold, the plate is removed, a separating layer is applied to the formed half-mold plane and the second, symmetrical first, half-mold is formed and polymerized in the same way, the half-mold is a significant sign, it involves new operations and a new sequence of their implementation, aimed at solving the problem with achieving a technical result, increasing the reliability of the form by increasing the reliability of the closing of the form, as it finally forms the plane of the mold connector with the optimal location by the layers of its material, in addition, the form reliably closes even if there are possible deviations from flatness in the plane of the connector due to the copying of these defects by layers of the second half-mold;

- fastening both half-molds along their crest with the material of the second half-mold - an essential sign, provides for new operations and a new sequence of their implementation, is aimed at solving the problem with achieving a technical result, improving the quality of the working surface of the mold by reducing the mismatch of the latter in the plane of the connector from the mutual the displacement of the half-molds from the cutting forces during their machining, to increase the reliability of the mold by increasing the reliability of the clamping of the mold, as well as to increase the service life narrowing of the mold due to less wear of the locking and fixing elements, since it sets the conditions for the optimal performance of the latter with the optimal location of the connector plane and layers of the mold material;

- openings for accommodating the locking and fixing elements are made each in both half-molds after fastening the half-flanges of the half-molds, for example, with clamps, with a base - the sign is substantial, provides for new operations and a new sequence of their implementation, is aimed at solving the problem with achieving a technical result, to improve quality the working surface of the mold by reducing the mismatch of the latter in the plane of the connector with the exception of the mutual displacement of the mold half from the cutting forces;

- the structure is finally disassembled after trimming the allowance on the ridge to the zone with a guaranteed absence of fiberglass binder in the connector plane - the sign is significant, it involves the presence of new operations and a new sequence of their implementation, aimed at solving the problem with achieving a technical result, increasing the reliability of the mold due to increase the reliability of the closure of the form;

- fixing elements, for example, a shift-sleeve pair, are installed before disassembling the form on an adhesive compatible with a fiberglass binder of half-molds, for example, epoxy - the sign is significant, it requires new operations and a new sequence of their implementation, aimed at solving the problem with achieving a technical result, on improving the reliability of the mold by increasing the reliability of the closing of the mold, to increase the service life of the mold due to less wear of the fixing elements, as well as to improve the quality Static preparation of the mold surface by reducing the mismatch of the last connector in the plane while ensuring optimum conditions for the arrangement of these elements;

- on the adhesive surfaces of the bushings and pins, grooves and protrusions increasing their area are performed - an essential sign, provides for new operations and a new sequence of their execution, is aimed at solving the problem with achieving a technical result, improving the reliability of the mold by increasing the reliability of fastening of the fixing elements .

These distinctive features are significant, since each individually and all together are aimed at solving the problem with the achievement of a technical result. The use of a single set of essential distinguishing features in the known solutions was not found, which characterizes the conformity of the technical solution to the criterion of "novelty."

A single set of new essential features with common known provides a solution to the problem with the achievement of the technical result and characterizes the proposed technical solution with significant differences compared with the prior art and analogues. This technical solution is the result of research and experimental work to improve the reliability and quality of equipment for the manufacture of armored helmets without the use of well-known design solutions, recommendations, materials and is non-obvious, which indicates its compliance with the criterion of "inventive step".

The invention is illustrated by drawings, where Fig. 1 is a general view of a method for manufacturing a shell mold, Fig. 2 is a cross-sectional view of a general view of a method, Fig. 3 is a cross-sectional view during molding of a second half-mold, and Fig. 4 is a method for securing a mold for drilling holes, figure 5 - callout with installed locking elements, 6 - callout with glued fixing elements, 7 - General view of the disassembled shape.

A method of manufacturing a mold 1 for products from layered polymer composites, in which a dividing layer 4, successive layers 5 of a composite material, for example fiberglass 6, are applied to a reference part fixed on a base 2, for example a standard helmet 3, with the formation of the surface of the connector 7 and installation of locking 8 and fixing elements 9. On the front surface 10 of the helmet 3 and the working plane 11 of the base 2 close to them set the plate 12 and combine the working plane 13 of the latter with a plane of symmetry 14 b a helmet 3, and each successive layer 5 of fiberglass 6 of the half-mold 15 is laid equidistant to the front surface 10 of the helmet 3, the working plane 11 of the base 2 and the working plane 13 of the plate 12. After polymerization of the half-mold 15, the plate 12 is removed, a separation layer is applied to the formed plane 7 of the half-mold 15 4 and similarly mold and polymerize the second half-mold symmetrical of the first half-mold 16, fastening both half-molds along their crest 17 with the material of the second half-mold. The holes 18 for accommodating the locking 8 and fixing 9 elements are each performed in both half-molds after fastening the half-flanges 19 of the half-molds, for example, clamps 20, with the base 2. The structure is finally disassembled after trimming the allowance 21 on the ridge 17 to zone 22 with a guaranteed absence of connector 7 in the plane fiberglass binder. The fixing elements 9, for example, the shift-sleeve pairs, are installed before disassembling the mold on the adhesive 23, compatible with the fiberglass binder of the half-molds, for example, epoxy, and on the adhesive surfaces of the bushings 24 and pins 25, grooves 26 and protrusions 27 increasing their area are made.

An embodiment of the method consists in the fact that, for the manufacture of a product, for example, a helmet, from layered polymer composites, mold 1 is cleaned, the flash is removed, allowances are cut on half flanges 19, polished work surface 28 of mold 1, half molds 15 and 16 are connected with fixation with at least two pairs of bushings 24 and pins 25, tighten the half-ridges 29 with bolts and nuts 8, apply the separation layer 4 on the working surface 28 of the mold 1 and the common working plane 30 of the half flanges 19 and form the product.

Thus, the use of the invention will allow to create equipment for the manufacture of armored helmets of increased reliability, increased service life and higher quality. In this regard, a new technical solution is requested by industry, which also meets the criterion of "industrial applicability", i.e. level of invention.

Claims (2)

1. A method of manufacturing a mold for products from layered polymer composites, in which a separation layer, successive layers of a composite material, for example fiberglass, is applied to a reference part fixed on a base, for example a standard helmet, with the formation of a connector surface and installation of locking and fixing elements, characterized in that on the front surface of the helmet and the working plane of the base close to them set the plate and combine the working plane of the latter with the plane of symmetry and a helmet, and each successive layer of fiberglass half-mold is laid equidistant to the front surface of the helmet, the working plane of the base and the working plane of the plate, then after polymerization of the half-mold, the plate is removed, a separation layer is applied to the formed plane of the half-mold and the second half-symmetrical first is molded and polymerized by bonding both half-molds along their crest with the material of the second half-mold, the holes for the placement of locking and fixing elements each perform in both louvers after fastening the half-flanges of half-forms, for example, clamps, with the base, and, finally, the structure is finally dismantled after trimming the allowance on the ridge to the zone with the guaranteed absence of fiberglass binder in the connector plane. 2. The method according to claim 1, characterized in that the fixing elements, for example, a shift-sleeve pair, are installed before disassembling the mold on an adhesive compatible with the fiberglass binder of the half-molds, for example, epoxy, moreover, grooves increasing their area are made on the adhesive surfaces of the bushings and pins and protrusions.

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