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PAUL optimizing line for the production of window squares in Use

General view of the PAUL optimizing line for the production of window squares (computer illustration).

The PAUL optimizing line has been developed for a leading manufacturer of laminated window squares in Europe. It is about 60 m in length and produces in a fully automatic way. Operation is effected conveniently via touch screen at several operator terminals that are networked. There is a separate terminal for each cross-cut station, the handling equipment and the vacuum destacker. The aim is to save manpower and costs as well as considerably increase efficiency by using this fully automatic cross-cutting line. Hoch-quality individual components linked by means of durable handling equipment and intelligent control software turn the fully automatic system into a production line for maximum added value.


Fully automatic processing from the timber pack to the cut board

The timber packs with unplaned boards are transferred to the vacuum destacker via fork lift truck. One is moved directly in processing position; a second one can be placed in waiting position. The individual layers of the timber packs are separated by means of sticks. The topmost layer is taken up by the vacuum destacker and fed to the chain conveyor. A scraper removes the sticks as soon as the packs have been placed and feeds them into a box. When the stack is empty, the stack from the waiting position is automatically moved to the destacking position. A new stack can then be fed.

After destacking the workpieces are fed to the infeed station in layers, where the boards are buffered and individually pulled into the planer in an automatic manner at a feed rate of approx. 100 m/min. The workpieces are planed from all four sides as they are passing through the planer. A locally provided scanner is installed in the subsequent measuring station.


High yield thanks to two cross-cut lines

The workpieces are logically distributed to two cross-cut lines after scanning. The control calculates the distribution in a way that both lines are equally busy, so as to make use of the maximum efficiency. The two model C11 cross-cut stations are separating the workpieces using the optimizing results from the scanning operation. For this purpose the scanner optimizing software transfers the readily calculated cross-cut positions for every single workpiece. The removal of residual timber pieces from the complete production line is effected at two different places. Small residual timber pieces are blown out directly in the cross-cut stations and centrally collected via a waste belt conveyor. Larger residual timber pieces are first fed on the sorting system via the waste belt conveyor to a chopper for the production of chips for energy generation.

After the cross-cutting operation the workpieces are sorted according to length and quality at a sorting system with 12 sorting stations. The first stations are for short and finger jointing lengths und are feeding the workpieces into existing containers. The operating personnel can stop the individual sorting stations by means of a switch for container changing purposes. The last stations are for long preset lengths and are stacked manually.­­­

This unmanned cross-cut line was tailored to the specific needs of this customer. Many years of experience in plant engineering in conjunction with intelligent software solutions made by PAUL ensure a successful and economic operation.

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Maschinenfabrik GmbH & Co. KG
Max-Paul-Strasse 1
88525 Dürmentingen/Germany
Telefon: +49 (0) 73 71 / 500-0
Telefax: +49 (0) 73 71 / 500-111
Mail: info@paul.eu
Web: www.paul.eu