Puller Plug to the Rescue
The secret to long heater life is protecting heater lead wires and especially
the lead wire terminal pin connection. This week while visiting customers in
Canada we came across a customer who recently began making a carbon
fiber thermoset part. The platen/press design required the heater to be 2
inches shorter than tooling and thus requiring the heater two be inserted into
the tooling. Once new molds were added, the company needed to move
heaters from one mold to another.
Since the heaters were recessed, the only way to remove the heaters was to
pull them out by the lead wire. Pulling heaters out by the lead wire can
damage the heater. Normally, we recommend headers or clip supports to
protect the terminal lead wire connection. But in this case, the header and
clip support would catch and prevent the heater from being inserted into the tool.
The puller end plug, shown below, proved to be the right solution. Allowing
them to position the heater in correct location in the die and providing a better
way to extract the heater without pulling the lead wires out of the heater.
Puller End Plug Option – threaded cap allows heater to be pulled out when lead
wires are inaccessible or when the heater needs to be positioned within the tooling.
Making the best split sheath cartridge heater is what we do.
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