Indestep International Limited

Background Information on the Machines

          The design features of the Indestep Injection Moulding Machines involve

various innovative features and these can be applied to Standard and Special Purpose Machines.

Indicative Machine Size Comparison

                                                                                                

                                                                                                             

          Injection Machine Drawing.jpg (59719 bytes)                       

                              Front View                                                      Front View

              (4 Times the Clamping Tonnage)              (1 Times the Clamping Tonnage)

     Conventional Injection Moulding Machine                 Indestep Rotary  Machine    

 

For an enlarged front view of the Indestep Machine

 

Note:    The precise features that may be desirable depend on

the particular plastic mouldings that are to be produced.


The following information is only intended to be general and illustrative.

 

Key Features of the Indestep Machine:

bulletThe Basic Machine has eight stations:
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one for mould preparation (including for automatic inserting, parts and or in-mould coatings);

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one for mould closing;

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one for clamping / injecting;

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three notional for mould cooling but mould cooling (temperature control) is available continuously;

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one for mould opening and;

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one for ejecting / part removal.

 

bulletHowever, the First Model, Model IDVR050/ST has eight stations:
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one for mould preparation (including for automatic inserting, parts and or in-mould coatings);

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one for mould closing;

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two for clamping / injecting;

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two notional for mould cooling but mould cooling (temperature control) is available continuously;

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one for mould opening and;

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one for ejecting / part removal.

 

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Mould change-over / loading is readily and speedily achieved at one of the notional mould cooling stations.

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Allows key elements of a machine's operations to be carried out in parallel, thereby reducing cycling times.

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When the moulds are at the stations, these parallel activities include: mould tool closing / clamping and injection (at two stations with two injection units) / full or partial re-charging / controlled cooling (top and bottom of mould tool sets) / mould tool opening / ejection of mouldings / insertion (for insert work).

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When the mould tools are being moved on the rotary table between stations, these parallel activities include: to complete the re-charging (if necessary) / continuous cooling of the mould tool sets (top and bottom).

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Relatively small movements are involved for those key activities within the critical path of the machine's cycle, such as clamping and positioning for injection.

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The minimum 'station to station cycle time' (for producing mouldings, after the first complete rotation of the rotary table) is given by the time for transporting the mould tools from one station to the next station (the 'station to station time') plus the longest time required for a mould tool to be at a station (the 'station dwell time').

Indestep Cyclic Operations

The table below gives an indication of the activities that can be carried out in parallel.

Indestep Cycle Comparison

The table below gives an indication of the basis for a reduced cycle time.

Energy Efficiency of the Indestep Machine Design

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With the new Indestep Rotary Injection Moulding Machine, the power level is perfectly matched to the energy demand.

               

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Firstly, the AC servo motor for the injection screw is turned on at the start of ‘Plasticising’, and turned off when ‘Plasticising’ ends.

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Secondly, the AC servo motor comes on when indexing the rotary table starts, and is turned  off when indexing stops.

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Thirdly, the hydraulic power comes from a variable displacement pump that is electrically matched to the demand of the movement of the injector, after which time the energy from the pump is stored in a hydraulic accumulator and released to provide the energy for other auxiliary movements (mould opening, mould closing and injection etc.).

 

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In effect there are no peaks or troughs in energy usage.

 

Target Priority Markets:

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Specific obvious applications include: two material moulding (such as a closure and an integrated seal / wadding) and for producing a 'family' of mouldings (with the same material and maximum clamping tonnage) using different shaped cavities on the different mould tool sets loaded onto the machine, thereby reducing the number of mould tool change-overs required for lower throughputs.

 

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Indestep machines are aimed at competing with non-rotary conventional machines that use multi-cavity tools to achieve 'economies of scale' for producing small / medium size mouldings.

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The full benefits of the Indestep Machine and the Mould Tooling are received by 'in-house' injection moulders, such as Injection Moulders with their own products.

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Also, suited to Trade Injection Moulders as the Mould Tooling is very substantially less costly than comparative equivalent mould tooling.

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With the cheaper tools and quick mould change-overs, Indestep Machines are also suited to short runs.

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A family of mouldings can be produced using different cavities on the mould tooling sets on the machine.

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Ideally suited for producing general thermoplastics / rubbers, technical and thermosets mouldings.

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Suited to: inserting sub-parts and decorative coatings and; non-insert moulding work.

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The machines are very applicable to high throughputs of small / medium sized plastic mouldings for the cosmetics, toiletries, medical, closure, plugs and electronics markets.

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The machine integrates well into the overall production process and facilitates turnkey applications.

Standard & Special Purpose Machines:

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Indestep Machines offer very significant advantages over current 'state of the art' conventional non-rotary machines.

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The modular designs also allows other operations and facilities to be included in the machine's operations.

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The requirements of the mouldings to be produced governs the technical capabilities and specification of the appropriate Indestep Machines.

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