Stretch-blow molding machine

a molding machine and bending technology, applied in the direction of auxillary shaping apparatus, other domestic objects, manufacturing tools, etc., to achieve the effect of easy absorption of even high forces

a molding machine and bending technology, applied in the direction of auxillary shaping apparatus, other domestic objects, manufacturing tools, etc., to achieve the effect of easy absorption of even high forces

US20110260373A1Inactive Publication Date: 2011-10-27KRONES AG
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Effect test

Embodiment Construction

[0055]FIG. 1 schematically shows a stretch-blow molding machine 1 for stretch-blow molding containers from preforms. The stretch-blow molding machine 1 is a rotary-type machine with a blow-molding unit 2 supporting blow-molding stations 4 at its periphery which represents apart 1a rotating in relation to a stationary part 1b. The concept according to the disclosure, however, can be used without restrictions for stretch-blow molding machines in which the blow molding stations are arranged stationarily (not shown).

[0056]For at least one blow molding station 4, one electronic control unit 20 each is arranged on the blow-molding unit 2 in FIG. 1. The power supply of the control units 20 is accomplished e.g. via connection lines 11 and a rotary transmission leadthrough 6, e.g. a slip ring arrangement and / or a medium leadthrough, in the center of the blow-molding unit 2. Each blow molding station 4 has a stretching rod drive system, here with an electric servomotor 16, and a valve section...

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Abstract

A stretch-blow molding machine having at least one blow molding station, in which a split blow mold, an adjustable blow nozzle with a valve section, a stretching rod with a stretching rod drive system, and an electronic control unit are provided, the electronic control unit arranged in the blow molding station is equipped with hardware and software for selectively operating the blow molding station with a combination of a cam drive and a pneumatic drive, or a combination of an electric servo drive and a pneumatic drive, or only an electric servo drive in the stretching rod drive system. The movement of the stretching rod is initiated in the stretch-blow molding machine in the production process of a container by means of an electric servomotor with the beginning of or during the locking phase of the blow mold and before the blow nozzle is placed, and the stretching rod is already displaced to a position in which the stretching rod is either very closely approached to the preform bottom or contacts the preform bottom, or has even already pre-stretched the preform, until the blow nozzle is placed.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims the benefit of priority of German Patent Application No. 102010028255.3 filed Apr. 27, 2010. The entire text of the priority application is incorporated herein by reference in its entirety.FIELD OF THE DISCLOSURE[0002]The disclosure relates to a stretch-blow molding machine as well as to a method of stretch-blow molding containers.BACKGROUND[0003]In the stretch-blow molding machine known from DE 10 2008 012 757 A (rotary machine), an electronic control unit in the rotating part is associated to each blow molding station and controls the stretching rod movement as well as the blow pressure and valve control to be able to quickly adapt the control for the production process when the product is changed. The control units in the rotating part are linked via a bus system and connected to a master control device outside the rotating part. Each blow molding station can have a timer to perform angle-independent contr...

Claims

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Application Information

Patent Timeline
27 Oct 2011
Publication
US20110260373A1
IPC
B29C49/12
CPC
B29C49/12; B29C49/32; B29C49/42; B29C49/78; B29C2049/129; B29C2049/1204; B29C2049/1257; B29C2049/1271
Inventors
FINGER, DIETER; GELTINGER, FLORIAN