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SIPA has developed a quick mould change system for its ECS SP single-stage injection-stretch-blow moulding machines.
SIPA has developed a quick mould change system for its ECS SP single-stage injection-stretch-blow moulding machines.
Photo: 12

Italian machinery producer SIPA has developed a quick mould change system for its ECS SP single-stage injection-stretch-blow moulding (ISBM) machines, which the changeover times can be slashed by around a quarter.

The SIPA ECS SP system is suitable for production of specialty products such as containers for pharmaceuticals, cosmetics, personal care products, and spirits, particularly sizes between 20 and 50ml. New features also add extra safety and user-friendliness for operators, especially for some critical operations.

Two models are available: the ECS SP 50 with a 500-kN injection clamp force, and the 800-kN ECS SP 80. The system involves a new automated procedure for loading and unloading the preform core plates; this incorporates additional sensors to ensure that the mold opening stroke adjusted correctly according to the preform length.

Operations for assembling and disassembling the neck ring plate have also been modified. SIPA has developed a patent-pending system that now makes it possible for the procedure to be carried out by one person instead of two, in all safety.

Changing the blow mold is said to be easier with intelligent modifications to the press and the introduction of roller bearings in critical positions, meaning that once the forklift has positioned the mold next to the clamp unit, the mold can then be pushed into position by hand.

In addition, modifications have been made to sealing plate and stretch rods, and standard screw fittings for the water cooling system have been replaced by quick-fit push/pull fittings – all with the aim of making things simpler, faster and even safer for the operator of these ISBM systems.

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