RU118912U1 - TECHNOLOGICAL COMPLEX FOR THE PRODUCTION OF COMPOSITE COMPLEXLY REINFORCED HOLLOW RODS - Google Patents

Abstract

A technological complex for the manufacture of composite complexly reinforced hollow rods, programmatically organized from spatially located and interconnected fiber feeding systems, fiber impregnation systems with an impregnating bath, a preforming device, a system of forming dies, a heat chamber, a winding device, a pulling and cutting device, characterized by that it additionally contains an impregnation bath with sealing collars, a calibrating die and a pulling device located between the main pulling device and the winding device, while the system of forming dies is configured to obtain an array of radially located hollow rods of the same diameter.

Description

The utility model relates to technological complexes for the continuous production of reinforced products from polymer composite materials (PCM) by pulling and winding methods, and can be used to obtain hollow composite reinforced round rods for bridge supports, marine cables on oil platforms, rigging on yachts, structural products in the aviation, engineering and construction industries.

The technological line for the manufacture of composite reinforcement is known from the prior art, comprising a creel with roving bobbins, a leveling device, annealing chamber, an impregnating bath with a tensioning device, a squeezing device, a molding unit, a spiral winding device, polymerization chambers, a pulling device, cutting and reeling units. The molding unit is made of two parts. The first part is a matrix with a slotted channel, the thickness of which is less than the diameter of the reinforcement (d) and is equal to (0.7-0.1) d, and the width is (2-10) d. The second part is installed in front of the spiral winding zone and is a matrix with a round channel, the diameter of which is (1.2-1.5) d. The technological line is equipped with two spiral winding devices placed in series, as well as devices to prevent twisting of fibers and the distribution of the polymer binder along the length of the reinforcement (RF Patent No. 2384408, B29C 39/00, 2008). The technical result achieved by the device consists in increasing the productivity of the technological line and the possibility of producing composite reinforcement with enhanced consumer properties.

A disadvantage of the known device is its low technological capabilities. The production line is designed to produce ribbed reinforcement from PCM, and does not allow to obtain difficult-reinforced products from polymer composite materials.

The closest technical solution to the proposed utility model is a technological complex for the continuous production of long lengthy complex-reinforced products from polymer composite materials, organized from spatially located and interconnected systems, respectively: fiber supply system, fiber impregnation system, preforming device, forming dies, winding device outer layer, heat chamber, cutting device and pulling device, which additionally contains INH pulling means and the swivel. A pulling means is located between the heat chamber and the cutting device, and the swivel is installed inside the winding device of the outer layer, with the possibility of using the specified program to wind the outer layers on the workpiece according to a spiral-helical and / or cross-helical reinforcement pattern (RF Patent No. 108338, B29C 70 / 30, 2011).

The technical result achieved by the technological complex for the continuous production of long lengthy complex-reinforced products from polymer composite materials is to ensure the production of lengthy complex-reinforced products from polymer composite materials with high strength characteristics.

The disadvantages of the prior art technological complex for the continuous production of long lengthy complexly reinforced products from polymer composite materials include its limited technological capabilities. The technological complex does not allow to obtain long hollow complex reinforced rods from polymer composite materials.

The technical result of the claimed utility model is to enable the manufacture of long hollow, hard-reinforced rods of polymer composite materials, including hybrid ones, with high specific strength characteristics.

This technical result is achieved through the fact that the technological complex for the manufacture of composite reinforced hollow rods programmatically organized from spatially arranged and interconnected with each other, fiber supply systems, fiber impregnation systems with an impregnating bath, a preforming device, a molding matrix system, a heat chamber, a winding device , pulling and cutting device, according to a utility model, further comprises an impregnating bath with sealing cuffs, cal an absorbing die and a pulling device located between the main pulling device and the winding device, while the system of forming matrices is configured to receive an array of radially spaced hollow rods of the same diameter.

The essence of the claimed utility model is illustrated by graphic materials, where:

- figure 1 - shows a diagram of a technological complex;

- figure 2 is a forming matrix (section aa);

- figure 3 - impregnation bath and calibrating die (enlarged);

- figure 4 - the product at the exit from the system of forming matrices (section BB);

- figure 5 - product at the exit of the die (section bb);

- figure 6 - product at the exit of the winding device (section GG).

The technological complex for the manufacture of composite composite reinforced hollow rods, programmatically organized from spatially located and interconnected systems, includes a fiber feed system 1 (creel), fiber impregnation system 2, preforming device 3, forming matrix system 4, pulling device 5, impregnating bath 6 with sealing cuffs, a calibrating die 7, a pulling device 8, an outer layer winding device 9, a swivel 10, a heat chamber 11, a pulling device 12, a cutting device 13.

The technological complex for the manufacture of composite composite reinforced hollow rods works as follows.

Reinforcing material in the form of fibers or bundles is wound from creel bobbin 1 and passed through a fiber impregnation system 2 (impregnation bath), where it is impregnated with a polymer composition (matrix). As the polymer composition, polyesters, vinyl esters, epoxy and other resins are used in a mixture with a hardener. Reinforcing materials are glass or carbon fiber. The polymer-impregnated fibers are passed through a preforming device 3, which gives the fiber-polymer bundle the desired shape and aligns the fibers. Preforming device 3 contains a system of pre-forming matrices having a ring shape in cross section (not shown in the drawing), in which the impregnated fibers gradually approach the shape of the profile. After passing through the preforming device 3, the fibers and the uncured polymer are passed through a system of molding dies 4, in which the excess binder is squeezed out, the material is compressed in the transverse direction and takes the form of the product.

The system 4 forming matrices is a combination of six radially spaced annular dies with an annular die in the center (figure 2). All dies have the same outer diameter dн and inner diameter dв (mandrel diameter).

The system 4 of the forming matrices is heated using an alternating electric field of high frequency, which allows for quick heating of the material to a given temperature in any volume. The use of high-frequency heating can significantly increase the performance of the pulling process and the whole process. As a result of the exothermic reaction, the binder material turns into a gel. Complete curing of the composite occurs during continuous movement of the material in a system of 4 forming matrices. The exit zone of the matrices is a cooling zone. At the exit from the system 4 forming matrices, an array of radially spaced hollow rods of the same diameter is obtained, the configuration of which repeats the configuration of the outlet openings. The resulting hollow rods consist of uniaxially oriented fibers of a hardener and a binder, and are aimed at creating an internal structure of the product. The properties of hollow rods are substantially anisotropic. Their strength and rigidity in the longitudinal direction is much higher than in the transverse.

The array of radially spaced hollow rods cured to the glass transition temperature of the matrix polymer (FIG. 4) is pulled from the system 4 of forming matrices by the main pulling device 5. In this case, the pulling device 5, made on the basis of belt friction gears, compresses the hollow rods in the radial direction, presses them one another to a friend and feeds into the impregnation bath 6. An array of hollow rods passes through the impregnation bath 6 with sealing cuffs completely immersed in the melt binder (figure 3). Since the radial force from the pulling device 5 to the array of hollow rods in the bath area is no longer acting, gaps appear between the rods, which are filled with a binder. An array of hollow rods captures a binder, the amount of which on the surface of the array is controlled by the diameter of the holes of the sealing cuffs of the impregnation bath 6.

After passing through the impregnation bath 6, the array of hollow rods impregnated with a binder is passed through a calibrating die 7, in which the excess binder is squeezed out, the material is compressed in the transverse direction, solidifies as a result of high-frequency heating, and takes the form of longitudinally oriented hollow rods monolithically connected together by a binder (Fig. 5). An array of radially spaced hollow rods cured to the glass transition temperature is pulled from the calibrating die by a pulling device 8.

In the claimed utility model, the cured workpiece obtained by pulling is a mandrel onto which the outer layer of the composite is wound using a winding device 9. The winding device 9 is a gantry frame construction. A swivel 10 is installed inside the winding device. Spools with prepregs (fibers, tapes or bundles) are installed around the swivel.

The swivel 10 during the winding process can perform two program-controlled and coordinated with the movement of the workpiece movement: to rotate around the axis of the workpiece and move along the axis of the workpiece. When rotating and reciprocating the swivel 10, a spiral-cross winding pattern of the outer layer of fibers on the surface of the workpiece is implemented. In the case when the swivel 10 performs only rotational motion, the fibers on the workpiece are laid out according to a spiral-helical winding scheme. The winding pattern, the number of layers and passes, the winding pitch and other technological parameters are set programmatically depending on the properties of the starting materials and the required properties of the product.

After winding, the product enters the heat chamber 11, in which it is heated, final cured and cooled. From the heat chamber, the cured product (Fig. 6) is fed by a pulling device 12 into a cutting device 13, in which a diamond wheel (not shown) is cut into elements of a given length. The pulling devices 5, 8 and 12 of the technological complex operate synchronously according to the control program.

In the claimed utility model, the winding of the outer layer of the product is carried out continuously in the process of its rectilinear movement in the direction of pulling. The pulling and winding speeds for different starting materials are mutually agreed according to the control program in order to obtain products with desired characteristics. Productivity of production of products is determined mainly by the cure time of the composite, which depends on the type of binder and the size of the product. Since the operations of pulling and winding are combined in time, the complex has a higher productivity compared to peers, all other things being equal.

The technological complex allows to obtain difficult-reinforced products from composite materials with a multidirectional reinforced structure. Products have an internal structure, consisting of an array of hollow rods of the same diameter, interconnected by a polymer matrix, and having a longitudinally oriented fiber structure, and an outer layer with a spiral-cross or spiral-helical orientation of the fibers. Products with such a reinforcement scheme will have simultaneously high compressive, tensile, torsional and bending strengths. The technological complex allows to obtain products from hybrid composite materials, with various binders and various types of reinforcing fibers.

The claimed design of the technological complex provides the ability to manufacture long hollow, hard-reinforced rods of polymer composite materials, including hybrid, with high specific strength characteristics.

The analysis of the claimed utility model for compliance with the conditions of patentability showed that the characteristics indicated in the formula are essential and interconnected with the formation of a stable combination of the necessary features unknown at the priority date from the prior art sufficient to obtain the desired technical result - making it possible to manufacture long hollow, hard-reinforced rods from polymer composite materials, including hybrid ones, with high specific strength characteristics teristiki.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed technical solution:

- an object embodying the claimed technical solution, when implemented, is intended for the continuous manufacture of reinforced products from polymer composite materials and can be used to produce long hollow, hard-reinforced rods of circular cross section for bridge supports, marine cables on oil platforms, rigging on yachts, structural products in aviation, engineering and construction industries.

- for the claimed object in the form described in the independent clause of the utility model formula, the possibility of its implementation using the means and methods known from the prior art on the priority date as described in the application materials is confirmed;

- the object embodying the claimed technical solution, when implemented, is able to ensure the achievement of the technical result perceived by the applicant.

Therefore, the claimed subject matter meets the requirements of patentability “novelty” and “industrial applicability” under applicable law.

Claims (1)

Technological complex for the manufacture of composite reinforced hollow rods, programmatically organized from spatially located and interconnected fiber supply systems, fiber impregnation systems from the impregnation bath, preforming device, forming matrix system, heat chamber, winding device, pulling and cutting device, characterized in what it additionally contains is an impregnation bath with sealing cuffs, a calibrating die and a pulling device located between the bases a pulling device and a winding device, while the system of forming matrices is configured to receive an array of radially spaced hollow rods of the same diameter.