Brush making machine
US6854965B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2003 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Aug 16, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/425
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A brush manufacturing machine having an injection mold is used to manufacture multi-component brush elements made of plastic, in particular for toothbrushes. The injection mold has a nozzle-side mold plate and an ejector-side mold plate, in which mutually allocated mold cavities (8) are provided, the injection mold being formed as a turning tool, having a turning part (index plate) that can be rotated about an axis of rotation and that is allocated to the ejector-side mold plate (3), said turning part having partial cavities (8b) of the mold cavities of the ejector-side mold plate (3). The turning part, formed as an index plate (4), has at least three carrier arms (11) that have the partial cavities (8b) and that are situated approximately radially in relation to the axis of rotation (14) of the rotatable turning part. The mold cavities (8) are situated with their longitudinal extension approximately tangential to the axis of rotation (14). This arrangement of the mold cavities results in a small space requirement, even given a large number of mold cavities, so that despite a high number of mold cavities, comparatively small injection-molding machines can be used, with a correspond…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.