Injection moulding machines: describe more than clamping force
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Clamping force helps identify an injection moulding machine, but it does not tell a buyer whether the machine fits their mould or delivers the required shot. Record the injection unit and mould-installation dimensions alongside the clamping figure.
Use the documents for the actual machine. A model family can include different injection units, screws and drive arrangements. Copying the largest figure from a current brochure can describe equipment the seller does not own.
Separate the clamp from the injection unit
The clamping unit holds the mould closed. The injection unit supplies the material into it. Their specifications answer different questions, and both belong in the machine record.
For example, ARBURG's ALLROUNDER 1600T technical data lists clamping and mould-space information separately from screw diameter, calculated stroke volume and shot weight. Its shot-weight figures identify a reference material, while other tables distinguish materials and configurations. This is an example of how to read technical data, not a specification for another machine.
Keep those labels intact. A volume in cubic centimetres is not the same measurement as a weight in grams. A stated shot weight for one material should not become an unqualified weight for every polymer.
Build a record a buyer's engineer can use
For each value, keep its source beside it. The following sheet can expose a wrong-model brochure before it reaches the catalogue.
| Specification or item | Evidence to attach | Question if unclear |
|---|---|---|
| Machine identity | Plate photograph, model, serial and documented year | Does the manual cover this exact configuration? |
| Clamping force | Applicable manufacturer specification | Which unit and rating are stated? |
| Mould space | Installation drawing, platen details, opening and mould-height information | Which dimensions apply to this design? |
| Injection unit | Unit identity and fitted screw documentation | Has the unit or screw changed? |
| Shot information | Volume or weight, reference material and conditions | Is the advertised value supported? |
| Ejection and handling | Documented arrangement and included equipment | Which accessories remain with the machine? |
| Controls | Control model and known updates | What support and handover information exists? |
| Condition history | Maintenance, faults and specialist findings | Which points remain unverified? |
Some machines use a rotary table or another arrangement with different installation questions. Do not force every design into a tie-bar-spacing description. Preserve the manufacturer's dimensions and ask for clarification where the layout differs.
The installed mould is a separate asset decision
A mould fitted during the last production run is not automatically included. Establish its identity and ownership before taking catalogue photographs that imply a complete production package.
The mould-tool release guide provides a separate approval record. If the mould stays with the customer, state that exclusion clearly. If it is included, describe its identity and supplied components without promising suitability for another product.
Past production information can explain the machine's use, but it should not become a guarantee of cycle time or output for a buyer's mould. Attribute any historic figures to the recorded job and date.
Check auxiliaries and later changes
Identify the dryer, loader, dosing equipment and any robot or handling device visible around the machine. The plastics auxiliaries guide helps decide which items form part of the proposed package and which serve other machines.
Cooling may come from a dedicated unit or factory services. For an included process chiller, record its identity and the specialist work required before release. Do not imply that shared cooling equipment transfers with the moulding machine.
If the machine has been rebuilt or altered, use the modification chronology to distinguish original specifications from later changes. A recent component invoice is useful evidence of that component, not proof that the whole machine has been refurbished.
Send UK Auction Group the completed record, mould inclusion decision and auxiliary inventory. These details support a description that buyers can compare with their own requirements.
The manufacturing and process-equipment guide covers related plastics and factory assets.
Sources
This guide gives general information. Equipment-specific, legal, tax and safety decisions may need a qualified adviser or competent specialist. The guides do not promise sale prices, fees or results.