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Apparatus and method for supplying foils

A kind of equipment and foil technology, which is applied in the field of foil supply equipment, can solve the problems of foil tension change, pull-out force is not constant, etc., and achieve the effect of constant tension

Inactive Publication Date: 2003-12-17
INDAG GMBH & CO BETRIEBS KG
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] In such prior art feeding devices, the pull-out force required to pull a certain amount of foil from the supply roll is not constant, because the more the foil is unwound, the smaller the diameter of the supply roll and should be applied The torque of the foil changes accordingly, resulting in a change in the tension of the foil

Method used

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  • Apparatus and method for supplying foils
  • Apparatus and method for supplying foils
  • Apparatus and method for supplying foils

Examples

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Embodiment Construction

[0029] 1 and 2 show a first embodiment of the device according to the invention. 1 denotes a supply roll whose diameter D gradually decreases as the unwinding operation proceeds. The foil 15 is unwound from the supply roll 1 and guided in the consumption sensor 81 to move around the fixed deflection roll 19 and the movable sensor roll 21 . 67a and 67b schematically show pulling means, such as rollers connected to the foil by friction grippers and running at a speed and rate corresponding to further processing operations. The actual design of the respective electric motors 3 and 69 of the supply roller 1 and of the pull-off devices 67 a and 67 b is not relevant here, so the electric motors are only shown schematically. The movement of the foil is indicated by arrow 5 . The sensor roller 21 is supported in guides 41 a and 41 b vertically provided in the guide frame 31 . A trigger 39 is provided on the extension line of the rotation axis of the sensor roller, and the trigger 3...

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Abstract

Apparatus and method for supplying foils has motor-driven supply roller, a traction arrangement for pulling the foil material, and a consumption sensor between the roller and traction arrangement with which the roller is controlled depending on the consumption of foil. The sensor contains at least one fixed direction changing roller and at least one sensor roller whose distance to the direction changing roller varies with the difference in delivery and traction power. A sensor device detects the distance changes and increases the storage roller drive speed if the distance falls below a first defined distance, and reduces the speed if it exceeds a second predefined distance.

Description

technical field [0001] The invention relates to a device for supplying foil, for example for producing foil-lined bags, wherein the foil is supplied by a supply roller and drawn by a pull-off device, and to a corresponding method. Background technique [0002] After the foil is continuously supplied in sheets by supply rolls and moved for further processing by a pull-off device having a predetermined rate or speed adapted to the processing speed of the subsequent processing point, the foil prior to the pull-off device must be in a state of being subjected to pull state. The feed roll is rotatably supported and turned by the take-off roll. [0003] Such a foil supply is, for example, necessary for the production of foil-lined bags. Such a foil-lined pouch consists, for example, of two rectangular side foils which are sealed to each other on both sides in the filled state. The bottom foil or stand-up foil can optionally be sealed between the 4 edges and folded open so that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B41/12B65B41/00B65B41/16B65H16/00B65H18/20B65H23/00B65H23/04B65H23/182B65H26/02B65H27/00
CPCB65H23/042B65H23/1825Y10T156/1715B65B41/00
Inventor 发明人要求其姓名不公开
Owner INDAG GMBH & CO BETRIEBS KG
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