Method for manufacturing of pipe from flaky composite material and pipe made of flaky composite material

FIELD: technological processes.

SUBSTANCE: inventions relate to pipe of flaky composite material and method of its manufacturing. Method for manufacturing of pipe includes winding of inner glass plastic layer onto mandrel, bonding of intermediate foam plastic layer and winding of ribs and outer layer of glass plastic. In intermediate foam plastic layer there are circular grooves arranged for location of ribs. Ribs and outer layer is wound in a single technological operation by bundle of cross threads. Bundles are equipped with longitudinal threads, using method of cross-fibred longitudinal-transverse winding. At the same time longitudinal threads are bent as bundle changes from winding of external layer to winding of ribs and back with filling of each groove by mentioned bundle till ribs are formed.

EFFECT: improved manufacturability and reliability of glass plastic pipes operation.

2 cl, 4 dwg

 

The group of inventions relates to the field of mechanical engineering and can be used to create a box plot of the launch tubes of the layered composite material of polygonal cross-section for missiles with fins.

Known the launch tube by USA patent No. 4646618, NCI 89-20, publ. 1987 containing layered fiberglass power shell.

Known launch tube according to French patent No. 2445922, MKI F16 L 9/12, 1980, containing power shell made of laminated composite material.

A known method of manufacture of the launch tubes and the launch tube on RU # 2153983 C2 from 30.04.98,, MKI7VS 53/82, which implements a method of manufacturing tubes of the layered composite material by the method of longitudinal-transverse winding.

A known method of manufacture of the launch tubes and the launch tube on RU # 2201345 from 29.05.2001,, MKI7VS 53/82, which implements a method of manufacturing tubes of the layered composite material by the method of circular winding.

The known method of the cross-longitudinal-transverse winding fiberglass power shells and power shell, made this way by the materials Handbook "Composite materials" Ed. by V.V. Vasiliev, M. engineering, 1990, p.46, 47, 473.

The known method of the cross-longitudinal-transverse winding fiberglass power shells, unveiled in Patan the e RU # 2236350, publ. 20.09. 2004, MCI7VS 53/82, "a Machine for the cross-longitudinal-transverse winding fiberglass".

Known the launch tube of polygonal cross-section, containing material layers and frames EN No. 2219470 from 06.02.2002,, MKI7F41F 3/042.

Also known a method of manufacturing the launch tubes and the launch tube RU # 2115056 from 20.06.96,, MKI7F41F 3/042.

In the known solution implements a method of manufacturing a pipe from a layered composite material comprising a winding on the mandrel of the inner layer of fiberglass, the intermediate bonding the foam layer, the winding frames and the outer layer of fiberglass.

Known tube made of a layered composite material consists of an inner and outer shells made of fiberglass, an intermediate foam layer and frames.

The disadvantage of this method is its poor processability due to the run winding of the frames and the outer sheath of independent operations. In addition, the disadvantage is the low quality of construction due to the low bonding strength of the frames with the outer shell, and the associated highest weight of the pipe.

A disadvantage of the known pipe is the low reliability of its work due to the low bonding strength of the frames with the outer shell, as well as the high mass of the structure.

Know the fair way and the famous trumpet, as the closest to the technical essence and the achieved result, selected as a prototype.

The technical challenge which sent a group of the claimed invention, is the creation of GRP pipes with advanced technology and high reliability.

The technical result that can be achieved by solving the problem for the method, is to improve the processability of the pipes due to overlapping operations for winding frames and the outer shell, as well as to improve design quality by increasing the strength of the connection of the ribs with the outer skin and the reduction of its weight.

The technical result that can be achieved by solving the problem for a device is to increase the reliability of the pipe by increasing the bonding strength of the frames with the outer skin and the reduction of its weight, as well as to improve manufacturability of the design.

Tasked with achievement of the technical result is achieved owing to the fact that the method of manufacturing tubes of the layered composite material includes a winding on a mandrel of the inner layer of fiberglass, the intermediate bonding the foam layer, the winding frames and the outer layer of fiberglass, and in accordance with the invention in the foam layer perform the annular grooves for the placement of the frames, reel up the frames and the outer layer of a single process operation beam transverse threads, providing bundles of longitudinal threads, using, for example, the method of the cross-longitudinal-transverse winding, performing the bends of the longitudinal filaments in the transition of the beam from the winding of the outer layer to the winding frames and back filling each groove of the said beam prior to the formation of the frames.

For device tasked with achievement of the technical result is solved in that the tube of laminated composite material consists of an inner and outer shells made of fiberglass, an intermediate foam layer and frames, and in accordance with the invention, the ribs and the outer casing is an integral part of the beam transverse filaments with longitudinal threads, and fastened together referred longitudinal threads, which on the last area of this bond is executed bends.

Distinctive features of this method are the following characteristics:

in the intermediate foam layer perform an annular groove for positioning of the frames is a sign of significant, provides a new sequence of operations aimed at solving the problem with the achievement of the technical result in the enhancement of product quality by reducing its mass, as the availability to navok provides winding them thinner frames without slipping layer;

- winded frames and the outer layer of a single process operation beam transverse threads is a sign of significant, provides a new sequence of operations and their new version, aimed at solving the problem with the achievement of the technical result at improving the processability due to overlapping operations;

- providing bundles of longitudinal threads, using, for example, the method of the cross-longitudinal-transverse winding is a sign of significant, provides new enforcement operations aimed at solving the problem with the achievement of the technical result on improving the workmanship in the design by increasing the strength of the elements at the location of the reinforcing material of the outer shell and the frames in the areas of basic loads;

- performing the bends of the longitudinal filaments in the transition of the beam from the winding of the outer layer to the winding frames and back filling each groove of the said beam prior to the formation of the frames is a sign of significant, provides a new sequence of operations and their new version, aimed at solving the problem with the achievement of the technical result at improving the manufacturability and quality of fabrication due to overlapping operations and increase the strength of the connection span is outow and the outer shell structural elements instead of adhesive bonding.

Distinctive features of the device are the following characteristics:

- the frames and the outer casing is an integral part of the beam transverse threads is a sign of significant, provides new elements, new location and a new relationship, aimed at the solution of the problem with the achievement of the technical result in the increase of technological design due to overlapping operations;

- with longitudinal threads is a sign of significant, provides for the presence of new elements aimed at solving the problem of achieving a technical result, to increase the reliability of the pipe by increasing the strength of the elements at the location of the reinforcing material of the outer shell and the frames in the areas of basic loads;

- bonded mentioned longitudinal threads, which on the last area of this bond is executed bends signs of significant, include new items, new location and a new relationship, aimed at solving the problem of achieving a technical result, to increase the reliability of the pipe by increasing the strength of the connection of the frames and the outer shell structural elements instead of adhesive bonding.

These distinctive when the Naki are significant, because each separately and all together aimed at solving the problem of achieving a technical result. The use of a single essential distinguishing features in the known solutions are not found, which describes the technical solutions according to the criterion of "novelty".

One set of new essential features of a General known provides the solution of the problem with the achievement of the technical result and describes the proposed technical solutions are significant differences in comparison with the prior art and analogues. These technical solutions are the result of research and experimental work to improve the manufacturability and reliability of launch tubes without the use of known design decisions, recommendations, materials and possess the obviousness that demonstrates their compliance with the criterion of "inventive step".

The invention is illustrated by drawings, where figure 1 shows a General view (a perspective view) of the pipe, figure 2 is a longitudinal section of the pipe, figure 3 - cross section of the pipe, figure 4 - cross section of the hull.

A method of manufacturing a tube 1 made of laminated composite material includes a winding on a mandrel of the inner layer 2 made of fiberglass, leilanie intermediate foam layer 3, the winding frames 4 and the outer layer 5 made of fiberglass. In the intermediate foam layer 3 perform the annular groove 6 for the location of the frames 4, reel up the frames 4 and the outer layer 5 of the unified technological operation beam transverse (circular) thread 7, providing the beams 7 of the longitudinal threads 8, using, for example, the method of the cross-longitudinal-transverse winding, performing the bends 9 longitudinal threads 8 at the transition of the beam from the winding of the outer layer 5 to the winding frames 4 and back filling each groove 6 of the said beam prior to the formation of the frames 4.

Pipe 1 made of laminated composite material consists of an inner 2 and outer 5 shells made of fiberglass, the intermediate foam layer 3 and the ribs 4. The frames 4 and the outer casing 5 made integral of the transverse beams(ring) thread 7, with longitudinal threads 8, and fastened together referred longitudinal threads 8, which on the last area of this bond is executed bends 9.

A variant of the method is that it is designed mainly for the production of the starting box of tubes for missiles with fins, where the implementation of the features of the invention are most effective. When using the invention implements a method of the cross-longitudinal-transverse winding, see the "prior art", see the guide "Composite materials" Ed. by VLA. According to the method of the winding are a bunch of threads, which is formed on the machine for winding, see patent RU No. 2236350, and lies on the mandrel rings due to the rotation of the latter with the formation of the weft threads 7. The longitudinal yarns 8 are formed by wrapping the bundle of threads 7 with special swivel. Bundle impregnated with a binder and rests on the smooth sections of the mandrel tape with the formation of oblique layers, and, due to the deformability of the cross section of the beam due to the optimum viscosity of the binder, "easily penetrates" in a fairly narrow groove 6 with the formation of intermediate frames 10 (ribs), greatly facilitating and enforcing design to improve the reliability of its operation due to the additional fastening of the frames 11 and 10 with the outer casing 5 bends 9 of the longitudinal fibers 8.

Works pipe 1 as follows. The pipe 1 is installed on the launch pad device support belt 11, which represents a reinforced frames 4, provided with connecting elements. The missile 12 with elements of plumage 13 comes when you start on guide elements 14 mounted on the intermediate 10 and 11 reinforced (base zones) frames.

Thus, the use of a group of inventions will allow you to create high-tech design of the pad to objetos pipe with high reliability of its work, and this confirms the intended use. The feasibility of inventions confirmed positive test results for samples and fragments of structures, development and manufacture of which is entirely based on the present description. In this regard, a new technical solution corresponds to the criterion "industrial applicability", i.e. the level of invention.

1. Method of making pipe from a layered composite material comprising a winding on the mandrel of the inner layer of fiberglass, the intermediate bonding the foam layer, the winding frames and the outer layer of fiberglass, characterized in that the intermediate foam layer perform the annular grooves for the placement of the frames, reel up the frames and the outer layer of a single process operation beam transverse threads, providing bundles of longitudinal threads, using, for example, the method of the cross-longitudinal-transverse winding, performing the bends of the longitudinal filaments in the transition of the beam from the winding of the outer layer to the winding frames and back filling each groove of the said beam prior to the formation of the frames.

2. Tube made of a layered composite material consisting of inner and outer shells made of fiberglass, an intermediate foam layer and frames, characterized in that the noise reduction is gouty and the outer casing is an integral part of the beam transverse threads, with longitudinal threads, and fastened together referred longitudinal threads, which on the last area of this bond is executed bends.



 

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