Linear-motor-driven conveying system, in particular stretching system

A technology of linear motors and conveying equipment, applied in the field of stretching equipment in the form of synchronous stretching equipment, can solve problems such as damage to supports, uncertain motion states, vibration, etc., and achieve the goals of reducing energy demand, avoiding vibration, and reducing structural height Effect

Active Publication Date: 2016-06-22
BRUECKNER MASCHB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this can lead to vibrations at this time, which can be caused by slot boundaries or slot snap-offs
Such vibrations can eventually lead to damage to the support and undefined motion states, especially in the return stroke area of ​​the stretching plant

Method used

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  • Linear-motor-driven conveying system, in particular stretching system
  • Linear-motor-driven conveying system, in particular stretching system
  • Linear-motor-driven conveying system, in particular stretching system

Examples

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Embodiment Construction

[0052] The linear motor-driven conveying device is described below based on a synchronous stretching device.

[0053] Such a stretching device has two symmetrically formed drive systems, which are symmetrical with respect to a central plane of symmetry SE extending perpendicularly to the plane of the drawing. exist Figure 1a Two drive systems arranged along the drawing direction 1 symmetrically with respect to the symmetry plane SE are drawn in , wherein the material web to be processed, that is to say stretched, in particular in the form of a plastic film F, is arranged at two positions along the drawing direction 1 The drive system that surrounds on the closed track 2 moves through.

[0054] Unstretched film F (only film will be described below, although processing web F can generally be handled with this stretching device and can be simultaneously stretched longitudinally and transversely, so that the invention is therefore not limited to plastic film webs ) enters the s...

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Abstract

The invention provides a linear-motor-driven conveying system, in particular stretching system. The improved linear-motor-operated conveying system is distinguished, inter alia, by the following features: the conveyed web (F) can be fixed to the nipper part (6), as a result of which a conveyed web plane (FE) is defined, said film plane (FE) being arranged at a height (H) with respect to the motor working side (MA) of the single linear motor drive or of the more powerful linear motor drive in the case of two linear motor drives, and said height (H) being less than or equal to the length (L) of the secondary parts (503) on the conveying parts (7); the conveying system comprises either a) only one linear motor drive provided beneath the conveying part (7), or b) only one linear motor drive provided above the conveying part (7), or c) one linear motor drive arranged beneath and one arranged above the conveying part (7), the upper linear motor drive and/or the associated control system being configured in such a manner that the upper linear motor drive can only be operated with a maximum power of 75% in relation to the maximum power of the lower linear motor drive.

Description

technical field [0001] The invention relates to a linear motor-driven conveying device according to the preamble of claim 1 , in particular a stretching device in the form of a simultaneous stretching device. Background technique [0002] In particular stretching equipment is used in the manufacture of plastic films. So-called simultaneous stretching devices are known, in which plastic films can be stretched simultaneously in the transverse direction and in the longitudinal direction. Sequential stretching devices are likewise known, in which the plastic film is stretched in two successive stages, for example first in the longitudinal direction and then in the transverse direction (or vice versa). [0003] The material web to be stretched, usually a plastic film, is gripped by grippers arranged movably on circumferential guide rails on both sides of the material web to be stretched. The grippers here successively pass from the entry region (in which the edge of the plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/20
CPCB29C55/20B29C55/165B29K2105/256
Inventor H·贡平格A·贾波利斯M·杜施W·艾泽迈尔J·阿德勒
Owner BRUECKNER MASCHB
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