DE2362360B2 - Method and apparatus for manufacturing pipes from synthetic resin reinforced with fibers - Google Patents

Description

To simplify the description, the term "Malle" will be used below as a summary those fibers are understood which form a bundle.

In the present exemplary embodiment, there are two bundles 12 and 13.

Atomizer nozzles 14 are arranged on the path of movement of each path of those fibers, which from a the eyelets Il are formed. The atomizing nozzles 14 are worn by the Fadenführplatlc 4 and turn m deal with this.

There are at least two atomizing nozzles for each fiber web 14, each dispensing a different product.

As can be seen from the schematic representation according to I "ig. 2 ι". results, the atomizer nozzles 14 / u can lie on both ropes of the fiber web 17, namely an atomizer nozzle 15 above and an atomizing nozzle 16 below the fiber web 17.

The atomizing nozzle 15 can with a Vorratsbehäl-. · <• it is connected to the resin in conjunction seven, while the spray nozzle 16 to a Vorratsbehäl'jr for an accelerator or a mixture of accelerated resin. In this case, the exothermic polymerization begins in the imgcbungsluft ■ immediately after the two components have been sprayed on.

According to the desired result also the possibility of using the atomizer nozzles 15 and 16 different I larze to deliver.

Common Fig. J is for each fiber web 18 b / w. 19 off Mats only provided an atomizer nozzle, namely the atomizer nozzle 15 for the laser path 18 and the Atomizing nozzle 16 for the fibrous web 19. Let / t Then the impingement of the two fiber webs on the mandrel 5 sets the polymerization in motion.

In the embodiment according to FIG. 4 creates each fiber web 18 or 19 from mats with a plurality of atomizer nozzles that release different synthetic resins or synthetic resin components and / the atomizing nozzle 20 was a catalyzed polyester, 21 an accelerated polyester, 22 a Pigment. 23 a catalyzed polyester. 24 an accelerated polyester, the latter being Polyester in the cured state has a lower hardness than that caused by the atomizer nozzles 20 and 21 own dispensed polyester.

In this case -s! the inside u> _, 'tnhrcs ii.iili de ι Polymerization is much more rigid than the outer surface there is also the possibility of using different resins that polymerize without the application of heat, for example a polyester for the interior and a Epoxy resin for the outside.

Kierzii 2 sheets of drawings

Claims (8)

Patent claims: 1. Process for the manufacture of pipes from synthetic resin reinforced with fibers in which the fibers are combined into bundles and these fiber bundles are wound onto a mandrel, which performs a uniform axial movement, and in which the resin is sprayed is applied, characterized in that this spraying on the fiber bundle before the winding takes place, the fiber bundles at least two independent spraying processes with different synthetic resins or synthetic resin components. 2. The method according to claim I, characterized in that the independent spraying processes used different synthetic resins or components when they met perform an exothermic reaction. J. The method according to claim 1 or 2, characterized characterized in that one component is a catalyzed resin and the other is an accelerated one Resin is. 4. The method according to any one of claims 1 to 3, characterized in that the first component on one side of the fibers and the second component on the other side of the fibers is sprayed on. 5. The method according to any one of claims 1 to 4, characterized in that the fiber bundles, the form the outer part of the tube, with a resin of the same nature as the inner bundle, but with different I ls. properties, can be impregnated. 6. The method according to any one of claims I to 4, characterized in that the fiber bundles, the the exterior of the pipe will be impregnated with an epoxy resin while the fiber bundle will form undergo an impregnation treatment with an unsaturated polyester for the inner layers. 7. The method according to any one of claims I to 6, characterized in that the different Components are successively sprayed on one and the same side of the fiber bundle. 8. Device for performing the method according to one of claims I to 7 with a Drum for fiber bobbins, which is rotatable about a horizontal axis, with a thread guide plate, the is rotatable synchronously with the drum, with a mandrel that is continuously horizontally displaceable with a spinneret which surrounds the mandrel towards which the fibers run and with at least one atomizing nozzle between the mandrel and the thread guide plate, which is connected to a storage container, characterized in that between the mandrel (5) and the thread guide plate (4) at least two Atomizer nozzles (14) or two sets of atomizer nozzles (20,21,22 or 23,24) are provided and that each of the atomizer nozzles (14) or the atomizer nozzles (20, 21, 22 or 23, 24) and of the same set are connected to a separate storage container. The invention relates to a method for manufacturing pipes from synthetic resin reinforced with fibers according to the preamble of the preceding claim I and a device for implementation this procedure. It is known (US-PS J4 55 7G5), curable synthetic resins to be sprayed onto a mandrel only after the reinforcing fibers have been wound up. This approach has however, the disadvantage that the hardness reappear only to begins at a late point in the manufacturing process and thus lengthens it. The invention is based on the object of specifying a method with which a fast and simple production of the pipes mentioned above is possible and at the same time the production of Pipes with different layers should be made possible. To solve this problem, the invention c Process the features of the characterizing part of the main claim. The different synthetic resins or synthetic resin components are selected so that they carry out the polymerization when they come into contact with one another. Since the spraying takes place before winding, the polymerization begins very early / in a hurry, at the latest at the time of winding. Furthermore, you can easily focus on the inner and outer tubes with different properties Produce outer surfaces or successive layers of differently impregnated Create fibers. University claims 2 to 8 identify advantageous ones Developments of the invention. Claim 9 identifies an expedient embodiment of a device for carrying out the method according to the invention. The invention is based on exemplary embodiments in connection with the Drawing explained in more detail. The drawing shows in Fig. I is a schematic view of a device according to the invention; F i g. 2 to 4 possible combinations of the arrangement of the atomizer nozzles. According to the drawing, the device comprises a drum 1, which is driven by a motor 2 by a imaginary horizontal axis is set in rotation. Dk drum 1 serves as a bobbin for a plurality of spools 10 on which glass fibers} are wound are. The axles of the bobbins 10 can be inclined with respect to the drum 1 in order to facilitate the unwinding process facilitate. Furthermore, a thread guide plate 4 is provided, which rotates synchronously with the drum I. Finally, there is a mandrel 5 which is on the imaginary axis of rotation of the drum 1, as well as a spinneret 6, the mouth of which is concentric to the mandrel 5 is arranged. The mandrel 5 is carried by two endless belt conveyors 7 and 8, respectively, which it continuously and regularly give an axial translation movement. The thread guide plate 4 carries in the present case two rows of openings 9 on two concentric circles lie. A fiber from one of the bobbins 10 passes through each opening 9. The fibers of neighboring Openings 9 are combined to form mats or webs after they have passed through eyelets II are. D'e emerging from the eyelets 11 mats or Orbits of a circumferential circle form a bundle which converges in the direction of the spinneret 6.