Product category:
Hydraulic Components
News Release from: Parker Hannifin | Subject: Series 2H/HMI hydraulic tie-rod cylinders
Edited by the Engineeringtalk Editorial
Team on 11 May 2001
Hydraulic tie-rod cylinders on paper
machines
Parker Hannifin hydraulic cylinders are specified as part of the automated control system for paper reel lifting, loading, supporting and positioning operations on many paper machines from Metso Paper
Parker Hannifin hydraulic cylinders are specified as part of the automated control system for paper reel lifting, loading, supporting and positioning operations on many paper machines built and supplied by Metso Paper - the world's leading supplier of technology, systems and equipment for the pulp, paper, converting and panelboard industries Automated reeling is an essential operation in the production and finishing of paper, board and tissue
This article was originally published on Engineeringtalk on 20 Feb 2001 at 8.00am (UK)
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It is a continuous process that is only interrupted by reel changes when the parent reel diameter has reached a predetermined value.
Continuously increasing machine speeds are driving the trend towards larger parent reels in order to limit the total number of reel changes per day.
Metso Paper's reelers represent the leading edge in this technology.
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Linear load, tension and torque can be optimised for all grades of paper and board.
Typically, Metso reelers feature between 15 and 20 specially adapted Parker Hannifin Series 2H and Series HMI hydraulic tie-rod cylinders to control the movements of the primary devices, lowering arms and secondary carriages.
Most of the cylinders employ integrated linear transducers to provide accurate position feedback and ensure that the movement of the primary devices and secondary carriages is perfectly synchronised.
The main sections of the reeler are the frame, reel spool storage and reeling drum.
Reeling is carried out against the reel drum.
The primary devices receive empty reel spools from the storage area above the reel drum, lock the empty reel spool with locking clamps operated by Parker cylinders, turn the reel spool to the tail threading and turn-up position, and deliver the reel spool to the secondary devices after turn-up.
Parker cylinders controlling the secondary carriages then adjust the linear load between the reel drum and parent roll in order to reach an optimum roll structure, and deliver the full parent roll after turn-up.
Turn-up devices guide the paper sheet from the parent roll around the empty reel spool and cut it during the turn-up sequence.
The secondary carriage cylinders feature linear transducers that feedback information relating to the diameter of the parent roll.
"In an average year, Metso Paper will build around 25 to 30 reel projects ¤ for installation all over the world", says Metso's Marko Lassila. Request a free brochure from Parker Hannifin ...
"Parker is our preferred supplier for hydraulic cylinders because the company operates on a global basis and we, and our customers, know that replacement parts for the cylinders are easily available should that become necessary.".
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