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Hesta Head Conversion - Blow Moulding Controls

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Converting<br />

<strong>Hesta</strong> heads to<br />

‘Conventional’ Servo control<br />

A s a result of many customer requests we have developed an adapter plate that enables<br />

‘conventional’ servo valves to be used in place of the special H+L device.<br />

This means you can replace the <strong>Hesta</strong> parison programmer with virtually any other parison<br />

programmer such as Moog, Hunkar, Barber Colman, Siemens etc..<br />

Our adapter plate connects the servo valve directly to the <strong>Hesta</strong> wall thickness control cylinder.<br />

We have also integrated the LVDT transducer inside this adapter block.<br />

In addition to having a much greater choice of the latest technology servo valves that have excellent<br />

dirt resistance, you also have a choice of servo valve repair companies.<br />

The time to carry out the installation is minimal as there are no mechanical changes to the<br />

cylinder mounting or its coupling.<br />

This also means that the cylinder remains compatible with your existing <strong>Hesta</strong> heads.<br />

KEY FEATURES<br />

1. Replaces the ‘special’ H+L<br />

valve with much more readily<br />

available servo valves.<br />

2. Repair costs are considerably<br />

reduced with service turnaround<br />

in days.<br />

3. Uses technology that most<br />

maintenance engineers are<br />

familiar with.<br />

4. Interfaces directly to virtually all<br />

parison programmers.<br />

<strong>Hesta</strong> head cylinder shown with Moog valve.<br />

LVDT protected inside valve mounting block


About BMC <strong>Controls</strong> …..<br />

For over 25 years we have specialized in supplying parison<br />

programming systems for all types of blow m oulding machines.<br />

Our special relationship with Moog <strong>Controls</strong> Ltd allowed us to<br />

manufacture special versions of the Moog 25 point programmer,<br />

and service Moog valves.<br />

In addition, we manufacture a range of leak testers and automation<br />

equipment to improve container packing efficiency<br />

Which Parison Programmer<br />

is best<br />

for your application?<br />

Most packaging applications<br />

do not require<br />

’hundreds’ of profile points.<br />

In fact 10 to 30 are usually<br />

adequate.<br />

For larger mouldings (20 to<br />

200 lt) 50 to 100 points are<br />

needed to achieve good<br />

wall thickness control.<br />

‘Slider’ type systems are<br />

very user friendly and are<br />

still the preferred choice of<br />

most companies.<br />

‘Screen’ type programmers<br />

often have many high-tech<br />

features but may also need<br />

‘higher tech’ setters !<br />

Moog MPC ‘Screen-type’ parison programmer<br />

Moog ‘25 point’ parison programmer<br />

Want To Know More?<br />

Fax or call us with details of your application. Photos of the machines head are useful.<br />

BMC <strong>Controls</strong> Ltd. Phone 01242-604040<br />

Silk Mill Lane Fax 01242-603987<br />

Winchcombe Glos. GL54 5HZ<br />

e-mail Sales@bmc-controls.co.uk<br />

U.K.

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