Apparatus and a method for forming plastic preforms into plastic bottles with a movable bottom portion

US11331846B2 · kind B2 · utility

Assignee

• KRONES AG · DE

Inventors

• Andreas Pense · Obertraubling, DE
• Thomas Philipp · Eilsbrunn, DE
• Gerald Huettner · Vilseck, DE
• Dieter Finger · Neutraubling, DE
• Andreas Steiner · Mannheim, DE

Key dates

• Filing date: Feb 13, 2018
• Grant date: May 17, 2022
• Expiry date: Dec 6, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2031/7158
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A forming unit (20) for forming plastic preforms into plastic bottles, wherein the forming unit comprises a blow mould (20) having a first lateral portion (4), a second lateral portion (6) and a bottom portion (2), wherein said lateral portions as well as the bottom portion (2) form a cavity (15), within which the plastic preforms (10) can be formed into the plastic bottles, wherein the bottom portion (2) can be moved relative to the lateral portions (4) in a closed condition of the blow mould, wherein the forming unit (20) comprises a drive unit in order to move the bottom portion (2) relative to the lateral portions (4, 6), wherein the drive unit preferably has a movable piston element (32) which ist movable along a predefined stroke path. According to the invention, the apparatus has a first stroke path limiting means (22, 24) that limits the stroke path of the bottom portion (2) and/or of the piston element (32) in a first direction, wherein this stroke path limiting means (22, 24) is adjustable in order to modify the stroke path.