Injection mold

Patent metadata

Field	Value
Publication number	US-11878449-B2
Application number	US-202117399255-A
Country	US
Kind code	B2
Filing date	Aug 11, 2021
Priority date	Aug 23, 2017
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

An injection mold, in particular for encapsulating rotors of electric machines, has a mold, wherein the mold has an arrangement of mold segments. The arrangement forms, along a longitudinal axis, a cavity for a component to be arranged. An exchange unit is provided, which is designed to remove at least one mold segment from and/or insert at least one mold segment into the arrangement, with the result that a size of the cavity can be changed.

First claim

What is claimed is:

1. A method for producing encapsulated structural parts, comprising the steps of:
providing an injection mold having a molding tool which has an arrangement of mold segments, wherein the arrangement forms a cavity;
positioning a first structural part in the cavity and encapsulating with a material;
removing and/or inserting at least one mold segment in order to alter a size of the cavity; and
positioning a second structural part in the cavity for encapsulation,
wherein the step of removing and/or inserting at least one mold segment includes using an exchange unit to rotate the at least one mold segment into or out of the molding tool in a direction perpendicular to a longitudinal axis of the molding tool.

2. The method according to claim 1 , further comprising the step of:
changing a number of mold segments in order to change a length of the cavity.

3. The method according to claim 1 , further comprising the step of:
providing differently dimensioned mold segments.

4. The method according to claim 1 , wherein
one or both of the first structural part and the second structural part is a rotor of an electrical machine.

5. The method according to claim 1 , wherein
the exchange unit includes at least one rotary element which rotates about a rotation axis parallel to and offset from the longitudinal axis of the molding tool when removing and/or inserting the at least one mold segment.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Kirsch Stephan
• Rienecker Thorsten
• Schlag Philipp
• Schmid Peter

Classifications

• B29C45/0441 Primary

  involving a rotational movement (B29C45/06 takes precedence) · CPC title

• B29C31/006

  Handling moulds, e.g. between a mould store and a moulding machine (movable moulds B29C33/34; for injection moulding B29C45/1756) · CPC title

• B29C33/301

  Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods (B29C33/0088 takes precedence) · CPC title

• B29C45/1742

  Mounting of moulds; Mould supports (mounting of exchangeable mould inserts B29C45/2675) · CPC title

• B29C45/1756

  Handling of moulds or mould parts, e.g. mould exchanging means (moulds per se B29C45/26) · CPC title