DD154287A1 - DEVICE FOR FEEDING MATERIAL RAILS IN MACHINING MACHINES - Google Patents

Abstract

The invention relates to a device for drawing material webs in processing machines. In particular, the invention is suitable for drawing thin film webs in coating machines. In addition, it is applicable in the paper processing and textile processing industries. The aim and object of the invention are to provide a device which allows a simple and quick retraction of the web at any point of the machine. This is achieved by the fact that the device for pulling in the material web from two endless drag bands rotating around the material web on both sides and a clamping piece arranged between them is designed in such a way that the clamping piece consists of three tubes, of which the middle one has tabs arranged at the ends movable in the elongated holes of the outer tubes firmly connecting plates is arranged. On these tabs a connection piece is arranged, that connects the clamping piece with the Schleppbaendern formschlüssig.

Description

The invention relates to a device for drawing webs of material in processing machines. In particular, it is suitable for drawing in thin film webs in coating machines. Moreover, it is applicable in the paper processing and textile industry.

Characteristic of the known techninchen solutions

The known devices for drawing in material baffles in processingBfflaschinen consist essentially of two elements, a transport element and an element that releasably connects the material web to be collected with the transport element. The disadvantage of this is that the textile tape had to be drawn before being pulled into the center of the processing machine and the film was fastened by means of a spring clip.

A device described in DE-OS 2241 127 consists of a next arranged to be recovered web of material finite Federstahlbaad with. Nietkopfartigen elevations for guiding dos transport elements: s.

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The material web is attached by gluing to a spring bar. A disadvantage of dieeer solution is the complicated constructed transport element with its nietkopfartigen elevations and the finite design, dan is to be transported from a memory for commissioning. As a result, the retraction of the material web is not immediately possible at any point. Further disadvantages arise from the fact that the material web to be collected must be glued to take along. After the device described in DE-OS 2505 429 a trailing belt is used as a transport element with which the receiving part is connected. A disadvantage of this solution is the use of only one trailing belt, as this one-sided tape guide does not allow safe transport wide webs «continue the Äufnahmeteil must be transported to the respective required place of Einziehbeginns»

The entrainment of the material ballin to be collected takes place by means of softening parts. Since these springs in the current Bet rubbed subject to fatigue, this design is also disadvantageous. By means of the device described in DE-PS 2151 583 endless circulating roller chains are used for transport and the entrainment of the material web via a Trs-Uisportkleimne that holds the material web by spring force »To drive these roller chains, especially for long collection paths, larger forces required. The roller chain must be maintained and is expensive to purchase ,, Furthermore, as already shown, dae holding the material web by spring force disadvantageous.

The object of the invention is to provide a device which ensures a simple and quick handling of the material web when drawing in Bearbeitungsmaochinen.

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Explanation of the We sens the invention;

In processing machine !! which serve the material web treatment, for example in coating machines for film treatment, a large number of rollers for supporting, deflecting and transporting the material web are present. The material web is pulled in between these rollers during maintenance and repair work, a change in the production program or as a result of a crack in the material web during ongoing operation.

The object of the invention is to provide a device which is designed so that the web can be fed with little material and with a simple technology at any point of the machine.

This object is achieved in that the device for pulling the web in processing machines, consisting of two endless, both sides adjacent to the web of trailing belts and arranged between them clamping piece is designed so that the clamping piece consists of three tubes, of which the middle Pipe is arranged by means of tabs arranged at the ends movable in the oblong holes of the outer tubes firmly connecting plates. On these tabs is ever a connector consisting of a guide plate, a tab, a fork and a screw-in bolt attached. The clamping piece is positively connected via the connecting piece with the towing belts, while the screwed bolts of the connecting pieces engage in the correspondingly arranged holes of the towing belts.

The main advantages of the invention are that da3 KleFiiGStuck is releasably connected by means of positive engagement with the towing belts. This design ensures that the material web can be drawn in at any point of the processing machine *

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The invention will be explained in more detail using the example of a device for drawing film webs into a Beschichirungsmaschine. The accompanying drawings show:

Pig. 1 shows the clamping piece Pig according to the invention. 2 shows the formschlüßsige connection between clamping piece

and trailing pig. 3 shows the positive connection clamping piece-Schiepp-

band in section Fig. 4 shows the clamping piece with d @ r to be recovered film web

in section Fig. 5 shows schematically the course of the towing belts

The clamping piece according to the invention, shown in Fig. 1, consists of three tubes, of which the middle tube 1 is arranged by means arranged at the ends of tabs 4 movable in the oblong holes.der the outer tubes 2 firmly connecting plates 3, on the tabs is the connector consisting of laache 5, fork 6, screw-bolt 7 and guide plate 8, bolted by means of bolts 7 and 9 screw. With the screws, the plates 3 are connected to the tubes 2. The clamping piece is clamped in accordance with the Fig. 3 to d & n towing belts 11 so that the trailing belt 11 is below the fork 6 and over the tabs 4 »5, while the screw-in pin 7 of the connectors with their cylindrical rope in the correspondingly arranged holes of Towing straps 11 a. This also ensures the smooth running of both trailing belts. The film web to be collected is attached by looping the tube © 1 and 2, according to Fig. 4 »on Klemmetück. As a result of the drive 12 of the towing belts 11 and the film weight of the distance between the tube 1 and tube 2 is reduced such that the film is positively connected with these and transported.

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The path of the trailing belts 11 is shown schematically in FIG. The drive 12 is provided with a clamping possibility 13 for the trailing belts 11 and for guiding the trailing belts 11 deflection rollers 14 are attached.

The pulleys 14 are alternately arranged so that they support the tow belts 11 of the front and back and deflect in a desired direction. For Dar-Ubergleiten the connectors on the pulleys 14 a groove is centrally located on these.

On the direction to be collected film web side facing a small collar for guiding the trailing belt 11 and on the opposite side a larger collar for lateral guidance of the clamping piece is arranged on the guide rollers 14. The smaller collar allows sliding of the connecting piece, in particular the fork 6 with the tabs 4 »5» on the pulleys 14 ·

After completion of the retraction process, the distance between the tubes and 2 is increased so that the film web can be pulled out between them «. The clamping piece is transported by means of drive 12 back to the starting point of the Einziehvorganges. Y / eiter, it is possible to perform the return transport without trailing belts 11 manually. For this purpose, the trailing belts 11 are bent up at the tabs 4, 5 of the clamping piece and released from each other. The drivetrain 11 is driven by an electric motor via a slip clutch. It is thereby driven a disc which has 11 pins on the circumference at a distance from the holes of the towing belts.

By means of these pins, the synchronous running of the towing belts 11 is ensured and transmitted with the drive torque. The Spannraöglichkeit 13 equalizes expansions of the towing belts 11 and ensures the necessary Uaschlingung the drive pulley (Fig _c 5).

Claims (1)

invention claim Device for. Pulling material webs in Bearbeitungsiiiii consisting of two endless, both sides of the web circulating towing belts and a zwisehen them arranged clamping piece, characterized in that the clamping piece consists of three tubes, of which the middle tube by means arranged at the ends of the plates movable in the slots the outer tube fixed connecting plates is arranged, that on the tabs e a connecting piece, consisting of a guide plate, a tab, a fork and a screw-in bolt, is mounted and that the clamping piece is positively connected via the connecting piece with the towing belts.