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Dip Moulder Automates With Precision Linear Actuators

A manufacturer of dip moulded rubber and latex products has upgraded a semi-automated line to full automation using linear actuators from Parker-Origa, making the most of existing equipment while maintaining to produce a huge range of goods.
 

 
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PR Log (Press Release)Apr 30, 2009 – A manufacturer of dip moulded rubber and latex products has upgraded a semi-automated line to full automation using linear actuators from Parker-Origa, making the most of existing equipment while maintaining the flexibility to produce a huge range of goods. Bristol-based Precision Dippings Marketing Ltd had an existing transfer and handling system feeding the dipping tanks, which they wanted to retain.

They called in consultant engineers from Parker-Origa to work with them designing and developing a system to dip the moulds or forms into the tanks.

“Essentially, the need was to vertically lower the moulds into the tanks, then lift them out again,” says Parker-Origa’s Nigel Smith. “But a wide variety of precision mouldings was to be made on the line, each requiring a unique dipping procedure. Some products require a single dip, others multiple dips to build up depth of material; some go in out quickly, others slowly; some go in and out in steps; some need variable speed.

“It was clear that we’d need an intelligent controller, and Precision Dippings were keen to retain the transfer system controller, so we had to interface to that too.”

Parker-Origa make a range of pneumatic and electrically driven linear actuators, so Nigel’s first job was to select the one that would be best suited to the job.  Because it was a harsh working environment, a totally enclosed solution was desirable and after due consideration a suitable electric actuator was proposed.

The OSP-E range of actuators was identified as ideal; these are robust and self-supporting, although in this case they were fitted with a guide to ensure precision motion. They can be fitted with a belt or screw as the internal drive mechanism, with a trapezoidal screw being chosen for the dip moulder because there is no back driving. A range of motors can be fitted to the OSP-E. In this case servos were chosen for the vertical axes, as they are the best option for precision motion control options.

Actuators were also used on horizontal axes to transfer the moulds to and from the dipping tanks. These were powered by stepper motors, because the precise accuracy of servos was not necessary and their open-loop control simplified system design and installation.

Nigel again: “The vertical dipping motion has to be programmable for each type of product, so we needed an intelligent controller for that. The horizontal transfer movements are not so precise, but they can be complex to account for the need for different dipping patterns. Also different production volumes and speeds are addressed by using one, two or three tanks in parallel; so sometimes the lines are each handling different products. “We retained the original controller on the existing handling system, so use signals from this to initiate sequences on the new controller.  Its actually quite an elegant solution, and was the way we minimised disruptionto production during installation.”

Precision Dippings currently use the new system on a 14 hour working pattern, but it is capable of running 24 hours a day if necessary. Products made include seals for divers’ dry suits, boots for vehicle gear levers, industrial seals, medial devices and consumables such as condoms and surgical gloves. Product quality has improved as a result of automation, while productivity has increased so much that Precision Dippings is able to take on considerably more business



ORIGA is a division of Parker Hannifin Corporation.

With annual sales exceeding $12 billion, Parker Hannifin is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of commercial, mobile, industrial and aerospace markets. The company employs approximately 62,000 people in 48 countries around the world. Parker has increased its annual dividends paid to shareholders for 52 consecutive years, among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company's web site at http://www.parker.com, or its investor information site at http://www.phstock.com.





For more information, please contact:

Ray Barnes – Managing Director
HOERBIGER-Origa Ltd, Unit 12 Brunel Court, Waterwells Business Park,
Gloucester, GL2 2AL      Tel.:   +44 (0) 8700 600 655     Fax:   +44 (0) 8700 600 656
E-mail: info-hogb-marketing@parker-origa.com   http:///www.parker-origa.com


Issued by Bob Dobson:
Bob Dobson Ltd, High Bank, River Petworth, West Sussex, GU28 9AX
Tel: 01798 861677   Fax: 01798 860932  
E-mail: bob@bobdobson.com   www.bobdobson.com


Please address all editorial enquiries to:
4CM, The Old Haybarn, Mentmore, Leighton Buzzard, Beds, LU7 0UE. Tel: 01296 660080. Fax: 01296 662274.
Email: info.parkeroriga@4cm.co.uk

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4 C M is one of the UK's leading marketing communications agencies. We specialise in business to business (B2B) marketing, providing dedicated marketing consultancy, PR, copywriting and graphic design services.


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Email Contact:Click to email (Partial email =  @4cm.co.uk) Email Verified
Issued By:4 C M
Phone:01296 660080
Fax:01296 662274
Address:The Old Haybarn
:Mentmore
City/Town:Leighton Buzzard
State/Province:Bedfordshire
Zip:LU7 0UE
Country:United Kingdom
Categories:Manufacturing, Marketing, Technology
Tags:parker-origa, dip moulder, precision linear actuators
Last Updated:Apr 30, 2009
Shortcut:http://prlog.org/10227590

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