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Method for leakage detection in a device for shaping container preforms

A technology of prefabricated parts and leak testing, which is applied in the field of leak testing, can solve the problems of high production cost, increased energy consumption of compressed air sources, and reduced overall system efficiency, achieving the effects of increased efficiency, reduced costs, and cost savings

Active Publication Date: 2020-04-21
KRONES AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this time, the forming process continues, but the energy consumption of the compressed air source (such as an air compressor) increases significantly
[0006] As a result, the overall efficiency of the system is reduced and production costs are high

Method used

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  • Method for leakage detection in a device for shaping container preforms
  • Method for leakage detection in a device for shaping container preforms
  • Method for leakage detection in a device for shaping container preforms

Examples

Experimental program
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Embodiment Construction

[0057] figure 1 A schematic view of an apparatus 1 for shaping container preforms is shown, for example in the form of a stretch blow molding machine, with a plurality of processing stations 2 , presently in particular blow molding stations. At the processing stations, compressed air is blown into the heated preforms during normal operation, converting one preform into a container at each station.

[0058] The device comprises a compressed air system connected to a source 3 of compressed air, presently in the form of an air compressor. The compressed air supplied from the compressed air source to the compressed air system can be shut off by means of the valve 4 of the compressed air source.

[0059] Currently, the compressed air system includes: a rotary distributor 5 as a compressed air distributor; an annular channel 6 configured between a dome pressure control valve 7 and a blowing block valve 8; an annular channel 9 configured Between the dome pressure control valve 10 a...

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PUM

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Abstract

The invention relates to a method for leakage detection in a device (1) for shaping container preforms, comprising a compressed air system connected to a compressed air source (3) and having at leasttwo regions which are fluidically connected and can be separated from one another and / or from the environment by means of blocking elements. The method involves an automatically performed leakage testrun, in which at least one of the blocking elements and / or the compressed air supply is directed into the compressed air system in such a way that it can be separately determined for each region whether compressed air is escaping.

Description

technical field [0001] The present application relates to a method for leak detection in a device for shaping container preforms. Background technique [0002] For the production of containers such as bottles, devices are used mainly for plastic containers which shape the container by pressurizing the container with compressed air so that the material assumes the shape of the container. For example, preforms are heated and blown into molds. For example, it is still possible to stretch the preform with stretch rods as in a stretch blow molding machine. [0003] When forming with compressed air, there are typically several processing stations (also called blow molding stations) at which one preform is formed. Compressed air is typically supplied from a compressed air source such as a compressor via a compressed air distributor such as a rotary distributor. Seals in compressed air distributors are high-pressure components because they must withstand the compressed air being ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/80B29C49/46B29C49/36B29C49/10F15B19/00G01L19/00
CPCB29C49/10B29C49/36B29C49/80B29C2049/4697B29C49/46
Inventor T·飞利浦R·奥斯特T·基辛格D·斐格尔T·罗辛多
Owner KRONES AG