METHOD FOR MAKING A CHARGE AIR HOSE

Abstract

The disclosure relates to a method of making a charge air hose or pipe from plastic. It is an object to provide a method of making charge air hoses, by which charge air hoses are producible from continuous fiber-reinforced plastics with uniform wall thickness and an inner outline of high precision. Such a method can include the following steps: A) braiding a hose outline on a core using continuous fibers, B) laying the fiber braid together with the core into a cavity of an injection mold, C) injecting a low-viscosity free-flowing hardenable resin to impregnate the braided hose outline with the resin, D) hardening the impregnated component, and E) removing the component from the mold and removing the core.

Claims

1-12. (canceled)

13. A method of making a charge air hose from plastic, the method comprising the steps of: braiding a hose outline on a core using continuous fibers; layering the braided continuous fibers together with the core into a cavity of an injection mold; injecting a low-viscosity free-flowing hardenable resin to impregnate the braided hose outline with resin so as to generate an impregnated component; hardening the impregnated component; removing the component from the mold and removing the core.

14. The method of claim 13, wherein the core is compressible.

15. The method of claim 13, wherein said braiding is effected via an automatic circular braiding machine.

16. The method of claim 13, wherein the continuous fibers are organic fibers.

17. The method of claim 16, wherein the continuous fibers are carbon fibers.

18. The method of claim 16, wherein the continuous fibers are polyamide fibers.

19. The method of claim 16, wherein the continuous fibers are polyester fibers.

20. The method of claim 16, wherein the continuous fibers are aramid fibers.

21. The method of claim 13, wherein the continuous fibers are natural fibers.

22. The method of claim 21, wherein the continuous fibers are flax fibers.

23. The method of claim 13, wherein the continuous fibers are inorganic fibers.

24. The method of claim 23, wherein the continuous fibers are glass fibers.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0032] The invention will now be described with reference to the single FIGURE of the drawing (FIG. 1) which shows the step C) of the method of the invention in schematic form.

DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

[0033] A braid 2 composed of continuous fibers 3 is braided onto a compressible core 1, in the form here of an inflatable hose. The core 1 with the braid 2, 3 is inserted into a longitudinally separable mold 4. A cavity 5 has been formed between the mold 4 and the fibers 3 braided onto the core 1. The core 1 is guided within the mold 4 by elements that are not shown here such that it comes to rest centrally within the cavity 5 of the mold 4. The radial distances between the wall 6 of the cavity 5 and the braid 2 are correspondingly equal everywhere on the left of the core.

[0034] The mold 4 has at least one injection opening 7, through which the cavity 5 is filled with a high-viscosity resin (not shown here). This not only fills the cavity 5 with resin, but also impregnates the braid 2 with resin.

[0035] After the hardening, the mold 4 can be opened and the core 1 with the now hardened impregnated braid 2 can be removed.

[0036] The inflatable core 1 can now be emptied and removed from the finished hose formed by the hardened braid 2.

[0037] It is understood that the foregoing description is that of the preferred embodiments of the invention and that various changes and modifications may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.

LIST OF REFERENCE NUMERALS

(Part of the Description)

[0038] 1 compressible core [0039] 2 braid [0040] 3 continuous fibers [0041] 4 longitudinally separable mold [0042] 5 cavity in the mold 4 [0043] 6 wall of the cavity 5 [0044] 7 injection opening in the mold 5