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HX: The optimum drive for the STORK S+ machine During the design of the HX drive concept, three important criteria were chosen as starting points: performance, energy consumption and operational reliability. It is the combination of these three factors that determines the cost price of your product. This was the key consideration during development of the HX drive for the new STORK S+ machine and the results are impressive!  The design of the HX drive During design, the application of the injection moulding machine must be taken into account. What level of performance is required? Which requirements must be met? The choices made during design determine the outcome in terms of performance, energy consumption and operational reliability. The possible drive concepts are then evaluated on this basis. Naturally, the best combination is chosen. Injection unit The production of extremely thin-walled packaging products places the highest demands on the injection speed and the force used for injection. Take, for example, the accurate injection of extremely small shot weights with speeds of up to 1000 mm/sec. and at pressures up to 2300 bar. Deviations in accuracy lead to product shorts or wave and ripple formations. In this case, the high energy density of a hydraulic system offers the best performance. 
Motor/pump combination The supply of energy must be tailored to consumption as far as possible. Various motor/pump combinations with fixed or variable pumps have been developed to meet these requirements. Large bores in pipes and valves produce minimum flow losses. Both result in maximum output from the energy supply in the machine. Driving the material feed The screw drive is usually the largest user of energy. The rotational nature of this movement is ideally suited to being driven electrically. The energy saving this achieves is generally so great that it more than offsets the higher purchase and maintenance costs for this type of drive. A hydraulic drive will only suffice in certain cases. With the HX drive, a choice can be made between both types of drive.  Driving the closing motion The packaging industry requires the closing motion to meet the highest standards.
Electrically driven closing motions are mainly used on lighter machines. This is done by means of a mechanical transmission (electromechanical). With larger machines, the cost price of a mechanical transmission is so high that an electrohydraulic transmission is often used in these cases. The extra conversion of energy from electric to hydraulic to mechanic has a lower efficiency than electric to mechanic. In addition, the peak loads (2 x during closing and 2 x during opening) are so high that energy savings can only be achieved at the expense of longer dry cycle times. A machine-hour calculation indicates that any advantage gained in terms of energy consumption is cancelled out by a longer cycle time. A shorter cycle time also generates higher production and efficiency. Stork Plastics Machinery B.V. repeatedly assesses how it can save energy when it comes to driving its injection moulding machine. The key consideration in this regard is that performance is not adversely affected, and that the costs required to achieve this energy saving are not higher than the benefits gained from the final energy saving. Software Stork Plastics Machinery B.V. is one of the few manufacturers of injection moulding machines that develops its own software for the complete control system. This enables the company to optimise control in line with the specifications of the various components. The state-of-the-art control software for the HX drive features various energy-saving controllers. In this way, the control software contributes significantly to achieving energy savings. 
PerformanceWith the new HX drive, the S+ machine delivers optimum performance. The quickest dry cycles and shortest injection times are a prerequisite for the fastest possible cycle. The accurate operation and excellent motion control result in a stable and constant rate of production. This makes the machine ideally suited for the most demanding thin-walled products. Energy consumption The new HX drive on the S+ machines provides a low level of energy consumption. Stork Plastics Machinery B.V. shows that considerable energy savings are possible thanks to new developments in the hydraulic design and electric drive and through optimum control of all machine movements. Using an identical product, comparable measurements between the HX drive on a Stork S+ machine and a machine with an electrohydraulic drive for the open and close motion have determined the following:
With an identical energy consumption, the STORK S+ machine achieves a cycle time that is 10% faster than the electrohydraulically driven machine. The HX drive consists of a minimum number of components. Fewer components increase reliability and, with it, the availability of the S+ machine. This keeps costs for repair and maintenance to a minimum. The smooth movement of the rigid closing construction helps to reduce wear of the machine and mould and increases operational reliability. Conclusion Stork Plastics Machinery B.V. shows that it can perform movements of masses with heavy weights and large forces with precise control, even with extremely short cycle times. This is only possible with a high degree of expertise in the area of machine drives. This same expertise was used by Stork Plastics Machinery B.V. in making well-considered choices regarding the components in the new HX drive concept. The HX drive of the Stork S+ machine produces an optimum balance between performance, operational reliability and energy consumption, providing the greatest possible cost advantage. We will be happy to advise you on the benefits you can achieve with the Stork S+ machine in your particular situation. News items: 01-06-2010 The right machine for every task! 23-09-2009 CDS700 full touch, introduced at the FAKUMA 2009 01-09-2009 WALLBOX introduces a new plastics packaging concept 01-01-2009 2K injection moulding solutions 01-10-2008 Stork Plastics Machinery at the FAKUMA 2008 01-09-2008 Remote Machine Service : an update 01-09-2008 HX: The optimum drive for the STORK S+ machine 03-03-2008 Stork Plastics Machinery B.V. appoints new UK Sales Manager. 01-03-2008 Stork Plastics Machinery : Events in 2008 05-02-2008 SPM starts with local sales in North America 01-10-2007 Stork at the K2007 trade fair. 01-10-2007 K2007 : presentation STORK S 1500 - 850 machine. 01-10-2007 K2007 : presentation STORK S 4400 - 5650-65 EP machine 01-10-2007 K2007 : presentation STORK S+ 6600 - 8650 R machine 01-09-2007 Stork introduces new range of injection moulding machines. 20-12-2006 New control technology for CDS600 20-12-2006 Stork Remote Machine Service 20-12-2006 Stork Plastics Machinery B.V. Celebrates Opening of New Premises 01-09-2006 New user interface introduced at FAKUMA 2006 10-08-2006 Program of the Open House at Stork Plastics Machinery B.V. 01-08-2006 Much more than a change of address 01-08-2006 New lease of life for HK-Plastics 01-08-2006 The optimum drive 01-02-2006 Stork N 18000 - 31500 : custom made for Jelenia plast Poland 01-02-2006 Stork Plastics Machinery : Events in 2006 Back... |
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Stork Plastics Machinery B.V. has it's own philosophy and strategy.
This results in innovative injection moulding machine designs which differ from any other manufacturer.
Our machines are leading in speed , reliability, and low energy consumption.
Stork started with a licence from the Reed corp. USA.
Over the years Stork has introduced the following machine ranges: TD, TDS, ST, SX, SXS.
Currently Stork delivers the STORK N and STORK S+ series.
Stork Plastics Machinery is ISO 9001:2000 certified. This ensures the highest quality standards,
a constant and high quality in design and service organisation.
Stork excells in cooperation.
Companies like Van den Velde Engineering, Loomans Plastics, Van den Brink,
Suhling, Ronetic, Pierik, Wittmann, Reis, can verify this.
Customers like Polimoon, Jokey, Schoeller Arcor Systems, Superfos, Vadeal, Didak, HK, Dijkstra Plastics, Thrace
have experienced this.
Stork Plastics Machinery can deliver machines in the following clamping forces:
75 ton, 100 ton, 110 ton, 120 ton, 125 ton, 130 ton, 140 ton, 150 ton, 160 ton,
170 ton, 175 ton, 180 ton, 190 ton, 200 ton, 250 ton, 300 ton, 330 ton, 350 ton, 400 ton,
440 ton, 450 ton, 500 ton, 550 ton, 600 ton, 650 ton, 660 ton, 700 ton, 750 ton, 800 ton, 900 ton,
1000 ton, 1100 ton, 1200 ton, 1300 ton, 1400 ton, 1500 ton, 1600 ton, 1700 ton, 1800 ton, 1900 ton,
2000 ton, 2200 ton, 2400 ton, 2800 ton, 3000 ton.
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