Cumsa's New LS Long Stroke for Slides: Efficient Mould Reduction

Mould design Mechanical system for slides enables a decrease in mould size

2024-10-29 Source: Cumsa 2 min Reading Time

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CUMSA

HASCO Hasenclever GmbH + Co KG

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Meusburger Georg GmbH & Co. KG

With the LS, Cumsa is offering a new long stroke for slides. It’s a mechanical system designed to expand slide travel up to 100 mm, therefore significantly decrease the mould size.

The slide action of the LS can perform movements from 50 mm to 100 mm quite easily and completely mechanically.(Source: Cumsa) — The slide action of the LS can perform movements from 50 mm to 100 mm quite easily and completely mechanically.
(Source: Cumsa)

Moulds with long strokes present several challenges due to the complexity and precision required in their design and manufacturing. It’s well known that the longer the stroke is, the larger the mould will be. Moving big moulds will ultimately be more complicated, as they require more time, effort and larger transportation machines. The LS system from Cumsa was created with mould reduction in mind, even in the event of longer strokes for larger moulded parts.

The LS has a compact design making it easier to fit into any application. The product can be attached to any slide to produce a better performing mould. The only machining required to install the system to any slide is a simple grove on the side of the slide to guide the LS. It can also be applied to any conventional movement, even on existing moulds.

This product features the patented Cumsa Double Rack system and is a 100 percent mechanical solution which comes with a slide retainer, designed to replace any angle pin by a perpendicular rack instead. Thanks to the 45° of the teeth, Cumsa obtains a 1:1 relationship, so the length of the guide is equal to the stroke. For 100 mm of travel, a 100 mm rod is needed with all of the movement being perpendicular.

One advantage of the LS is that the slide action can perform movements from 50 mm to 100 mm quite easily and completely mechanically, without the need for any additional mechanisms. This means by attaching the LS to the slides, there is not a need for a hydraulic cylinder nor its required circuits which would ultimately increase the cycle time. This also replaces the need for angle pins, which significantly increases mould dimensions. The LS is suitable to work with robotic arms used for part retrieval without causing any interference.

The system will help to reduce the size of the mould and still provide great robustness. With an estimated overall cost reduction up to 30 percent and a more effective production when the product is installed with the slides.

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