Page 144 - Mold Bases & Plates 2020

Standard & Optional Mold Base Features
152

Return Pins, Stop Pins and Sprue Puller Pins

Return Pins are used to ensure correct return of the ejector assembly to the home position.
Features supplied as DME return pins are precision-ground from superior quality hotwork die steel.
standard unless
otherwise specified.
Stop Pins arrest travel – preventing excessive wear and possible housing damage.
for quoting or The Sprue Puller Pin removes material from the Sprue Bushing at the end of the molding
ordering, sPecify: cycle. It’s positioned directly below the Sprue Bushing and is retained between the
return Pins ejector bar and ejector retainer.
Position: ❑ std ❑ specify
Recommended position from table
provided standard. If a different sp-x
Standard & Optional Mold Base Features | Return Pins, Stop Pins and Sprue Puller Pins
position is required, specify below. rp-xos 1 rp-x 2
❑ Position 1
Standard outboard position for
maximum space. sp1 sp2 sp3 sp4 sp5

❑ Position 2 offset (1)
Inboard position to allow rp-y1 rp1 sp-y rp2 rp-y2
for spring pockets.
Position/omission:
rp-y3 rp-y4
RPxos1 _____ RPy1 _____ rp3 rp4
RPx2 _____ RPy2 _____ sp6 sp7 sp8 sp9 sp10
RPx3 _____ RPy3 _____
RPx4 _____ RPy4 _____
rp-x 3 rp-x 4
❑ Omit machining ”B” half of mold
for return pins
❑ Omit return pins

length: ❑ std ❑ specify_____
diameter: ❑ std ❑ specify_____

sprue Puller Pins
diameter: ❑ std ❑ specify
Recommended diameter provided
standard (.375 diameter, except
88 and 812 are .250 diameter).
If a different diameter is required,
specify below. offset (1)
❑ .250
❑ .3125
❑ .375
length: ❑ std ❑ specify
Position/omission:
Position on center ❑ Center

or relocate to
X _______ Y _______
❑ Omit machining for sprue
puller pin
❑ Omit sprue puller pin

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