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Thermoforming packaging machine and method for controlling a film punch

A thermoforming and packaging machine technology, which is applied in the directions of automatic packaging control, packaging, transportation packaging, etc., can solve the problems of increasing calibration work, and achieve the effect of reducing the amount of calibration and slowing down wear

Pending Publication Date: 2021-10-22
MULTIVAC SEPP HAGGENMULLER GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this increases the calibration effort since the membrane punch has to be readjusted especially when changing the membrane

Method used

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  • Thermoforming packaging machine and method for controlling a film punch
  • Thermoforming packaging machine and method for controlling a film punch
  • Thermoforming packaging machine and method for controlling a film punch

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0042] In all figures, the same parts are provided with the same reference numerals.

[0043] figure 1 A perspective view of a thermoforming packaging machine 1 operating intermittently according to the invention is shown. The thermoforming packaging machine 1 has a forming station 2 , a sealing station 3 , a transverse cutting device 4 and a longitudinal cutting device 5 arranged in sequence on a frame 6 along a conveying direction R. On the input side, a feed roller 7 is located on the frame 6 from which the lower film 8 is drawn. Furthermore, the thermoforming packaging machine 1 has a conveyor chain 11 which, in each main working cycle, grips the lower film 8 and conveys the lower film 8 further along the conveying direction R.

[0044] In the embodiment shown, the forming station 2 is designed as a thermoforming station in which grooves are formed in the lower film 8 by thermoforming, for example by means of compressed air or vacuum. The forming station 2 can be config...

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PUM

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Abstract

The invention relates to a thermoforming packaging machine having a forming station, a filling path, a sealing station, a chain guide, a transverse cutting device, a longitudinal cutting device and a control device, in which the transverse cutting device comprises a film punch, an adjustment drive controllable by means of the control device to open and close the film punch, and a detection unit connected to the control device, the detection unit has at least one sensor for detecting a force course occurring during the opening and closing at the film punch in each process cycle, the control device being designed to temporarily suddenly drop the force detected by means of the sensor during the force tending to increase as a function of the force course, in each processing cycle of the film punch, a dynamic adaptation of the control signal is carried out for opening the film punch and / or closing the film punch, wherein a cutting of the film strip by means of the knife of the film punch can be detected as a result of a temporary drop in force. The invention also relates to a method of controlled cutting of a film web.

Description

technical field [0001] The invention relates to a thermoforming packaging machine. The invention also relates to a method of controlling a film punch. Background technique [0002] A general thermoforming packaging machine is known from EP 3 109 017 B1. It is assumed therein that a previously known film punch for cutting through the film is adjusted between an open position and a closed position by means of a pneumatic cylinder. In the relevant force course there is a force dip such that cutting of the membrane is marked in the force diagram. Nevertheless, the cylinder continues to build up pressure until the pressure rod of the membrane punch presses against the knife of the membrane punch with a preset maximum force before the stamping process is completed and the pressure of the cylinder is released. However, the repeated operation of the film punch to the preset maximum force level with each punching cycle results in high wear of the knife. [0003] As an alternative...

Claims

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Application Information

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IPC IPC(8): B65B57/14B65B61/06B65B51/10B65B41/12B65B47/04B65B47/02
CPCB65B57/14B65B61/06B65B51/10B65B41/12B65B47/04B65B47/02B26F1/40B26D5/00B26D1/085B29C51/46B65B7/164B65B61/065
Inventor T·霍尔德里德M·普菲斯特M·海兹
Owner MULTIVAC SEPP HAGGENMULLER GMBH & CO KG