IT8983543A1 - PRODUCTION SYSTEM OF TUBULAR ACCESSORIES IN COMPOSITE MATERIAL - Google Patents

Description

Description of the Industrial Invention Patent entitled:

"PRODUCTION SYSTEM OF TUBULAR ACCESSORIES IN COMPOSITE MATERIAL"

SUMMARY

this patent relates to the manufacturing process of tubular elements in composite material, resins and glass and / or carbon and / or aramid fibers ("Kevlar" type), etc.

It ? particularly suitable for the construction of fittings, accessories and hydraulic pipes and / or for the passage of small gases up to diameters of 20? 30 cm.

It essentially provides for the use of a sock or knitted tube in continuous and / or discontinuous, crossed fibers, in the dimensions suitable for the purpose, to be inserted on the tubular mold, wrapping it, after which the impregnation and the coating of said sock with specific resins, until the desired thickness is obtained. This is followed by the polymerization and consolidation of the product, and finally the extraction of the mold.

DESCRIPTION

The present invention relates to a new way of manufacturing hydraulic elements and / or for the passage of gas, such as joints, accessories, reductions and pipes of small and medium diameter in composite material such as thermosetting resins and glass, carbon and aramid fibers ( "Kevlar") etc. It provides for the use of a sock or tube with a mesh woven in fibers of the aforementioned type, which is inserted on the desired tubular mold and made to adhere, after which it is sprinkled with thermosetting resin in the thickness suitable for the purpose and made to polymerize. a highly resistant product in a very short working time, clearly competitive with respect to known systems.

In the current state of the art, pipes or hydraulic fittings in composite products (glass fiber resins, etc.) are made on special machines or molds, on whose external surfaces the fibers are wound, in a helical direction and crossed in layers, by turning the piece and advance the fiber and resin dispenser. These systems are still valid for large diameter pipes (eg 1000 min) while they are uneconomical for small and medium diameter pipes and fittings (up to 200 or u 300 min).

And furthermore, yes? found that in the wrapping phase the fibers, very thin, break so there? a perfect continuity? and distribution on the product shell.

Therefore, yes? thought of creating a system that would be economical from the manufacturing point of view and that would improve the technical characteristics of the product for small and medium diameters.

The innovative substance of the present invention consists in introducing instead of? coils of glass fibers, carbon, etc., loose to be wound gradually on the external surface of the product, stocking coils, or nets or cross tubular mesh always in glass fibers, curbon fibers, ccc. which is inserted, in the desired length, on the base mold.

This, indifferently can? be rectilinear and / or curvilinear, conical, etc., or with a section other than circular, so that it adapts to its external surface to be subsequently impregnated with resin and polymerized.

This use of the pre-packaged tubular mesh greatly reduces the construction time of the product and simplifies the work in particular in the creation of curves, "T" detachments, or various shapes. Furthermore, continuity is better guaranteed? of the fiber, since? the crossed mesh guarantees greater mechanical resistance.

Obviously, various types of tubular meshes can be used. or not crossed, cos? the diameter and mechanical characteristics of the fibers used may also vary.

Using pi? times the same system can you? make a product pi? resistant, that is, putting one on the ultra pi? shoe, with the same or different technical characteristics, impregnating and polymerizing them in layers or in a single and global form.

Once the resins have solidified, that is? to thermal polymerization and / or by means of ultraviolet rays, the base mold is extracted, thus leaving? the tubular product ready for finishing operations.

The use of the tubular fiber sock or knit is an efficient and advantageous assumption in the realization of curves in the hydraulic fittings, since? it does not find obstacles as long as? the base mold is removable u polymerization has taken place.

Some solutions according to the present invention are represented by way of preferential example, however not limiting, in the attached table, where:

- Fig. 1 shows a front view of the step for inserting the tubular sock or knit made of fiberglass, carbon, etc. on the base tubular mold;

- Fig. 2 shows a front view of the sock threaded onto the straight cylindrical tubular mold ready for impregnation of the resin;

- Fig. 3 shows some possible products made with the described procedure.

According to the invention and according to an embodiment, the construction system or method of pipes, fittings, reductions, curves, etc: of the hydraulic type made of composite materials, that is? thermosetting resins with fiberglass, carbon, etc., takes place through the use of a sock (2) or cross tubular fiber mesh (in the materials mentioned) pre-packaged in coils (3) in the dimensions suitable to be threaded on corresponding molds cylindrical (1) clicks will have the shape of the desired elements to be constructed.

So it will be possible to obtain cylindrical tubes (4), bends at 90? (5) to 45? (6) to 180? (7) and reductions (8), "T" joints (9).

Of course, the invention is not? limited to the examples of embodiment described above, starting from which other forms and other embodiments can be envisaged, and the details of execution can in any case vary without for that matter? get out of the essence of the invention cos? as stated and claimed below.

Claims (1)

CLAIMS 1- System for the production of tubular accessories in composite material characterized by the fact that it involves the use of a pre-packaged crossed tubular sock or mesh, in coils, in glass and / or carbon and / or aramid fibers (eg: " Kevlar ") etc., which is inserted and made to adhere to a tubular mold (of any geometric configuration of section) and / or to other support base in order to allow its impregnation with thermosetting resins suitable for the purpose and subsequent polymerization , in order to obtain fittings, curves, reductions c hydraulic pipes c / o for the passage of gas of small and medium-sized diameters. 2- Production system according to the first claim, characterized by the fact that the crossed tubular stockings or knits made of fiberglass, carbon, etc. they are pre-packaged in the dimensions suitable for the purpose both in terms of diameter and length, and / or the technical characteristics of use (e.g. variation in the thickness of the fiber of the sock, or their number in relation to the variation in the diameter of the finished product, etc.). 3- Production system according to one or more? of the preceding claims characterized by the fact that the pre-assembled tubular sock or knitted fabric of fibers? threadable on the same mold or support bus in more? layers in order to increase the mechanical characteristics of the finished product. 4- Production system according to one or more? of the preceding claims, characterized by the fact that the pre-packaged sock, or net, or cross-woven tubular knit of fibers can? be made with any geometric pattern of intersection of the fibers while presenting itself in the form of flexible tubing and adaptable to any support section. 5- Production system according to one or more? of the preceding claims, particularly suitable in the sector of composite products, such as resins and fiberglass, carbon fibers, etc., in the production of hydraulic pipes and accessories and / or for the passage of small and medium-sized gases, e.g. up to to 300 mm in diameter). 6- Production system of tubular accessories in composite materials made according to one or more? of the preceding claims and to what is substantially described and illustrated for the specified purposes.