Transport system, in particular transverse stretching systems

A technology of conveying system and stretching equipment, which is applied in the field of conveying system to achieve the effect of reducing the longitudinal force of the chain

Active Publication Date: 2015-09-02
BRUECKNER MASCHB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In this known stretching device there is in principle the problem of ensuring that the friction values ​​are not too high for rolling and / or sliding friction

Method used

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  • Transport system, in particular transverse stretching systems
  • Transport system, in particular transverse stretching systems
  • Transport system, in particular transverse stretching systems

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Embodiment Construction

[0045] The conveying system of a stretching plant usually includes gravity slides and guide rails, however, the gravity slides and guide rails can also be combined in one track unit.

[0046] The invention is explained below with the aid of a width stretching machine, ie a transverse stretching device (for example, which can be used in a sequential stretching device).

[0047] basic structure

[0048] The described film width stretching device or transverse stretching device, which is also referred to below as a TD stretching device (TD=transverse direction) for short, is known to have two symmetrically configured drive systems. exist Figure 1a Two drive systems which extend perpendicular to the drawing plane and are arranged symmetrically with respect to the plane of symmetry SE are depicted, wherein between the two drive systems which run around the closed rail 2, the drive system to be processed (ie to be stretched ) of the web, in particular in the form of a plastic film...

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Abstract

The invention relates to an improved transport system, in particular for a stretching system, characterized amongst other things, by the following characteristics: a support rail (17) and / or a guide rail (15), over which a conveyor chain (13) with clip chain units (KK) can be displaced, are provided, said units subdividing into a clip part (6) and a chain part (7), said support rail (17) or the guide rail (15) or the support rail and the guide rail (17, 14) is / are provided with a channel (122) which transverses in the longitudinal direction at least in one of the partial lengths of the support rail (17) and the guide rail (15). The support rail running surface (17a) comprises a plurality of outlet openings (122') through which the compressed air can be guided on the channel (122) for generating an airbag (130) between the support rail running surface (17a) and an air bearing cushion plate (140) on the clip-chain unit (KK) and / or the running rail running surfaces (31a, 31b) comprise a plurality of outlet openings (122') through which the compressed air can be guided on the channel (122) by generating an air bag (130) between the respective guide rail running surfaces (31a, 33a) and a bearing device (139) on the clip chain unit (KK).

Description

technical field [0001] The invention relates to a conveying system, in particular a stretching device according to the preamble of claim 1 . Background technique [0002] Stretching equipment is used especially 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 also known in which plastic films are stretched in two successive stages, for example first in the longitudinal direction and then in the transverse direction (or vice versa). [0003] A known transverse stretching device or transverse stretching stage within a stretching device is known, for example, from US 5 797 172 A . According to this prior publication, the web to be stretched, usually a plastic film, is clamped by means of grippers fixed to the chain, and said grippers are movable on both sides of the web to be stretched ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/20
CPCB29C55/20D06C3/025B29C55/12B29C55/08
Inventor M·鲍迈斯特G·安蒂姆斯M·翁特雷纳T·霍伊斯尔
Owner BRUECKNER MASCHB
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