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Guyson Maintenance Equipment for Injection Moulders

Guyson International offer plastic injection moulders the complete package of maintenance cleaning equipment for moulds, dies and injection lead screws.

PRLog - Feb. 28, 2013 - SKIPTON, U.K. -- Leading industrial finishing equipment manufacturer Guyson International offer plastic injection moulders the complete package of maintenance cleaning equipment for moulds, dies and injection lead screws. Cleaning contaminations from injection tooling, without dimensional change to the geometry or degradation of the mould material itself, is vital to maintaining optimum performance. Now, for many companies in this sector, Guyson has become their preferred supplier as it is distinctive in manufacturing two of the most effective methods for cleaning tooling; offering numerous dry blast and ultrasonic cleaning options, and providing whichever is best suited to the exact tooling form; and both manufactured in Guyson’s own factory in Skipton, North Yorkshire.

Guyson’s method of supporting customers starts with test and evaluation, and recognises that the only true way to recommend injection mould cleaning equipment is to prove the machine and process with process trials; so prospective customers are encouraged to submit sample components for free feasibility testing in the company’s extensive development workshop.

Ultrasonic Cleaning Injection Moulds
Ultrasonic cleaning is used for removing tough burnt on residues from mould faces or degreasing and cleaning assembled moulds without the needs for mould disassembly. This cleaning without the need for stripping, can sometimes offer a significant advantage over dry blasting methods.  

User can choose between Kerry KS and UCR tanks. The difference being that UCR models offer an integrated second tank used for rinsing and hand spray nozzle for rinsing off the part. Numerous standard size options are available for both models and special sizes can be made to order. All are robustly constructed using AISI 316L polished stainless steel tanks for durability, whilst Kerry Pulsatron ultrasonic generators ensure powerful parts cleaning and long equipment life.

The injection moulds are placed in the steel constructed basket and then gently lowered into the cleaning tank. Very heavy moulds may need a supporting grill lower floor inside the tank to help support their weight.  The cleaning time is then selected in the membrane keypad and the LCD panel displays the temperature and time set by the user, the time elapsed since the start of the cleaning process, and the status of the power supply, heater and ultrasonics. Guyson’s Kerry KS ultrasonic tanks have been designed to achieve optimum cleaning results using safe aqueous solutions.

Ultrasonic transducers bonded to the tank base provide high performance and reliability together with uniform distribution of the ultrasonic energy but if high degrees of loose contaminant is encountered during trials – side mounted transducers may be recommended to provide more effective cleaning – as the loose soil dropping to the base of the tank can reduce base mounted transducer effectiveness under certain conditions.

Ultrasonic cleaning takes place directly on the component surface and in the crevices and injection holes. The actual ultrasonic cleaning action is created by something called ‘Cavitation’ - where millions of miniscule cleaning bubbles are generated by alternating pressure waves created in the wash solution. These waves create cavitational bubbles which grow and then implode when at an optimum size, producing an extremely high energy scrubbing action that imparts the cleaning.

Blast Cleaning Moulds, Dies and Screws
Sometimes, depending on substrate and maintenance cleaning regimes, blast cleaning is a better option than ultrasonic cleaning for injection mould cleaning and Guyson’s Euroblast® range of Pressure Fed blast cabinets are perfectly suited to this job. Blasting allows localised attention to particular troublesome areas where residue material builds up most and provides controlled aggressive cleaning without the harmful effects, both to the dies and operators, which some manual cleaning methods can inflict. Blast cleaning is also highly capable of removing hardened residue plastic from case hardened steel injection mould screws; used in the injection mould manufacturing process.

The Guyson Euroblast PF (pressure fed) systems are designed for speed, giving faster cleaning times (up to four times faster than suction fed venturi systems) to meet higher production requirements, pressure feed blast systems are excellent for removing tough, hard scale and deposits particularly within hard-to-reach recessed areas and complex shapes.

As a result of the speed of the blasting process, maintenance cleaning can take place on a more frequent basis so lessening the inevitable process build-up of residual plastics on the steel injection mould screws. The blast media used is a specialist plastic blast media sold by Guyson, that is aggressive enough to remove the residue, but without causing any damage to the precision screw threads.

Blasting takes place in a well illuminated sealed cabinet, so the operator is not exposed to any hazardous debris flying about, cuts from knives or wire brushes or odours and spills from acid baths; all that can be present in manual cleaning operations. The plastic blast media is fired at the encrusted screw threads or die by a high impact stream of air generated from a Guyson G27 (27 litre) pressure pot and directed at the point of impact through a blast nozzle, so precise cleaning can take place exactly where it is needed.

A standard blast system also includes a Cyclone Separator and Dust Collector. The cyclone separator maintains a consistent grit size with the media stream to achieve consistent roughness level. The Guyson 75/16 cyclone separator creates a vortex of air that carries the heavier re-usable particles to the outside of the rotating air stream which collect in a storage hopper ready to be re-used, whilst the lighter remaining dust, fines and undersize media are separated and collected in the Guyson C400 cartridge dust collector for disposal.

Additional machine options include side loading platforms equipped with turntables so that heavy moulds can be mechanically lifted onto the turntable and then slid into the cabinet for blasting, whilst allowing rotation of the product. Or alternatively a roof slot option is available so that heavy items can be positioned directly into the cabinet whilst suspended on chains. For a free four page brochure on Guyson’s mould and die cleaning equipment options please contact Guyson’s Customer Service team now on 01756 799911 or email info@guyson.co.uk

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Source:Guyson International Ltd
Zip:BD23 2QR
Location:Skipton - Yorkshire - United Kingdom
Industry:Manufacturing, Engineering
Tags:mould cleaning, die cleaning, injection mould cleaning
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