Method for producing a hollow body composite component, and mandrel for use in such a method

Patent metadata

Field	Value
Publication number	US-12157254-B2
Application number	US-202117317579-A
Country	US
Kind code	B2
Filing date	May 11, 2021
Priority date	May 13, 2020
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A hollow body composite component is produced by a method using an injection mold, wherein a cavity of the injection mold is filled at least partially with a flowable material by injection of the flowable material, and a mandrel is driven through the flowable material to form a hollow body. Using the mandrel, at least one strip-shaped reinforcing element is introduced into a hollow body interior and is arranged on a surface of the hollow body facing the hollow body interior.

First claim

What is claimed is:

1. A method for producing a hollow body composite component using an injection mold, wherein a cavity of the injection mold is filled at least partially with a flowable material by injection of the flowable material, and then a mandrel is driven through the flowable material to form a hollow body, and wherein, using the mandrel, at least one strip reinforcing element is introduced into an interior of the hollow body and is arranged on a surface of the hollow body facing the interior of the hollow body by the mandrel taking up the at least one strip reinforcing element and guiding the at least one strip reinforcing element through a guide channel in a surface of the mandrel to a position in which the at least one strip reinforcing element is to remain in the hollow body, wherein the at least one strip reinforcing element is stored in an interior of the mandrel, and wherein the at least one strip reinforcing element is stored by a storage device which is arranged in the interior of the mandrel and on which the at least one strip reinforcing element is rolled up.

2. The method according to claim 1 , wherein the at least one strip reinforcing element comprises fibers embedded in a matrix of plastic.

3. The method according to claim 2 , wherein the fibers comprise unidirectionally aligned fibers.

4. The method according to claim 2 , wherein the matrix of plastic is a thermoplastic.

5. The method according to claim 1 , wherein two strip reinforcing elements are arranged on the surface of the hollow body facing the interior of the hollow body such that the two strip reinforcing elements are opposite one another.

6. The method according to claim 1 , wherein a two-part injection mold is used, and wherein the at least one strip reinforcing element is arranged at a point on the surface of the hollow body facing the interior of the hollow body which is arranged in a parting plane of the injection mold during injection molding.

7. The method according to claim 1 , wherein the at least one strip reinforcing element is arranged in the cavity of the injection mold before the injection of the flowable material.

8. The method according to claim 1 , wherein the at least one strip reinforcing element is fixed inside the cavity of the injection mold by at least one end of the at least one strip reinforcing element.

9. The method according to claim 1 , wherein the at least one strip reinforcing element is fixed outside the cavity of the injection mold by at least one end of the at least one strip reinforcing element.

10. The method according to claim 1 , wherein a plurality of strip reinforcing elements are arranged in layers in the cavity of the injection mold and, during injection molding, the plurality of strip reinforcing elements are separated from one another by the mandrel and are arranged on the surface of the hollow body facing the interior of the hollow body.

11. The method according to claim 1 , wherein the at least one strip reinforcing element is guided in a channel formed by the mandrel.

12. The method according to claim 1 , wherein the at least one strip reinforcing element is unrolled from the storage device when the mandrel is driven through the flowable material and is guided out through an outlet of the mandrel.

13. The method according to claim 1 , where the mandrel further comprises a storage device for storing two strip reinforcing elements in an interior of the mandrel, wherein the storage device comprises two rotatably mounted rollers on which the two strip reinforcing elements are stored rolled up.

14. A method for producing a hollow body composite component using an injection mold, wherein a cavity of the injection mold is filled at least partially with a flowable material by injection of the flowable material, and then a mandrel is driven through the flowable material to form a hollow body, wherein, using the mandrel, at least one tubular reinforcing element is introduced into an interior of the hollow body, and wherein the at least one tubular reinforcing element is expanded by the mandrel to a diameter of the hollow body.

15. The method according to claim 14 , wherein two tubular reinforcing elements are arranged on a surface of the hollow body facing the interior of the hollow body such that the two tubular reinforcing elements are opposite one another.

16. The method according to claim 14 , wherein a two-part injection mold is used, and wherein the at least one tubular reinforcing element is arranged at a point on a surface of the hollow body facing the interior of the hollow body which is arranged in a parting plane of the injection mold during injection molding.

17. The method according to claim 14 , wherein the at least one tubular reinforcing element is arranged in the cavity of the injection mold before the injection of the flowable material.

18. The method according to claim 14 , wherein the at least one tubular reinforcing element is selected from a group consisting of a woven hose, a mesh hose, a hose with a lattice structure, and a hose made of stretchable material.

Assignees

• Ford Global Tech Llc

Inventors

• Baranowski Thomas
• Broda Maik
• Rebmann Pascal
• Franzen Markus

Classifications

• B29C45/0001

  characterised by the choice of material · CPC title

• B29K2105/106

  longitudinally · CPC title

• B29K2101/12

  Thermoplastic materials · CPC title

• B29C45/2628

  with mould parts forming holes in or through the moulded article, e.g. for bearing cages · CPC title

• B29C45/14008

  Inserting articles into the mould (B29C45/14827 takes precedence) · CPC title