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Elements and Performance Criteria

  1. Determine trial requirements
  2. Set die and machine
  3. Perform die trial
  4. Rectify equipment and quality problems
  5. Complete trial

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Regulatory framework

The latest version of all legislation, regulations, industry codes of practice and Australian/international standards, or the version specified by the local regulatory authority, must be used.

Applicable legislation, regulations, standards and codes of practice include:

health, safety and environmental (HSE) legislation, regulations and codes of practice relevant to the workplace, equipment and production processes and hazardous materials

Australian/international standards relevant to the materials being used and products being made

any relevant licence and certification requirements.

All operations to which this unit applies are subject to stringent HSE requirements, which may be imposed through state/territory or federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and such requirements the legislative requirements take precedence.

Equipment

Equipment includes the setting and trial of one or more of:

injection moulding machines

blow moulding machines

similar machines

Operational requirements

Operational requirements include one or more of:

die/tool set up and adjustment

machine speed

cycle time

temperatures, including heating and cooling rates

product quality measures

any other specified requirement.

Procedures

All operations must be performed in accordance with relevant procedures.

Procedures are written, verbal, visual, computer-based or in some other form, and include one or any combination of:

emergency procedures

work instructions

standard operating procedures (SOPs)

safe work method statements (SWMS)

formulas/recipes

batch sheets

temporary instructions

any similar instructions provided for the smooth running of the plant.

Simple dies

Simple dies include one or more of:

two plates, including ejection systems operating in the mould open axis

cavity

back plates

support plates

cold runner

sprue

nozzle seat

locating ring-tab

sub, fan, diaphragm and direct gating

ejector pins and sleeves

ejector and stripper plates.

Advanced dies

Advanced dies include one or more of:

a two or three plate die with one or more product forming components which move in a direction other than the mould open axis, and which are driven by the mould rather than external actuation

sliding blocks or cores actuated by skew pins or cams

baffled, spiral, tube, and heat pipe cooling systems

rising cores

internally actuated unscrewing systems.

Complex dies

Complex dies include one or more of:

at least one external power and control source to actuate product forming components, which move in a direction other than the mould open axis, and require sequencing with the mould operation

moulds which retain molten material within the mould between cycles

hot runners

insulated runners

externally actuated sliding blocks, cores and unscrewing systems

safety interlocks.

Hazards

Hazards must be identified and controlled. Identifying hazards requires consideration of:

material spills or leaks

hazardous products and materials

manual handling hazards

stationary and moving machinery

machinery hazards

protrusions or obstructions

slippery surfaces

smoke, dust, fumes, vapours or other atmospheric hazards

humidity, air temperatures and radiant heat

noise, light and energy sources

other hazards that might arise.

Causes of faults include one or more of:

Causes of faults include one or more of:

materials

heat

equipment adjustment

equipment set-up.

Problems/solutions

Problems/solutions include one or more of:

selecting the right tools for a new job

using new and untried die or tool

adapting the process to the new product and die/tool

observing the process to obtain useful trial data

comparing the product to the desired specification

determining the cause of non-compliances.


Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and demonstrate the ability to:

read and interpret procedures, job specifications, material labels and safety data sheets (SDS)

determine production requirements

discuss work progress with other workers

conduct pre-start checks

start up and shut down equipment following appropriate procedures

inspect product conformance to requirements

identify and rectify routine faults

identify routine product problems and notify appropriate persons

distinguish between causes of problems, including:

operational problems

materials properties

process variables

procedural errors

store equipment, materials and product appropriately

adhere to safety requirements.


Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and demonstrate knowledge of:

the impact of incorrect or faulty materials

types of products made with different processes

changes to raw materials during the process

production work flow sequences and materials demands

selection practices for equipment, materials, processes and procedures

materials and process hazards

appropriate hazard control procedures

the importance of material properties and qualities

the importance of process conditions

approved procedures

appropriate action to resolve faults or report faults

start-up and shutdown procedures

safety requirements.