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US 6,872,350 B2Granted
Rack and pinion ejector guiding system for a molding machine
OwnerDonald L. Swartzinventor
Life of this patent
Estimating the term…
Abstract
An ejector system for use in an injection molding machine comprises a plurality of rack gears and pinions gears that provide active alignment of plates within the ejector system. As unequal force is experienced in ejecting a molded item, the rack and pinion gears distribute the force to other areas of the ejector system plate, maintaining proper alignment of the plates within the ejector system.
Claims13
A method of actively aligning a plate within ejector rails of an injection molding machine comprising the steps of,
- mounting a first, a second, a third and a fourth rack gear to a plate,
- engaging a first pinion gear operably connected to a first shaft with the first rack gear,
- engaging a second pinion gear operably connected to the first shaft with the second rack gear,
- engaging a third pinion gear operably connected to a second shaft with the third rack gear, such that the third pinion gear is operably related to the second pinion gear through the third rack gear, the plate and the second rack gear,
- engaging a fourth pinion gear operably connected to the second shaft with the fourth rack gear, and
- moving the plate within the ejector rails of the injection machine.
3 more elements
An ejector system for use in an injection molding machine comprising:
- (a) an ejector knockout plate,
- (b) a plurality of rack gears and a plurality of pinion gears, each of the plurality of pinion gears engageable with one of the plurality of rack gears in order to actively align the ejector knockout plate.
An ejector system comprising,
- an ejector knockout plate,
- a first, a second, a third and a fourth rack gear mounted to the ejector plate,
- a first pinion gear operably connected to a first shaft and engageable with the first rack gear,
- a second pinion gear operably connected to the first shaft and engageable with the second rack gear,
- a third pinion gear operably connected to a second shaft and engageable with the third rack gear, the third pinion gear being operably relatable to the second pinion gear through the third rack gear, the ejector knockout plate and the second rack gear, and
- a fourth pinion gear operably connected to the second shaft and engageable with the fourth rack gear.
3 more elements
An injection molding machine comprising,
- an ejector system plate with a plurality of rack gears attached thereto,
- a plurality of ejector rails, each of the plurality of ejector rails at least partially adjacent to the ejector system plate,
- a plurality of pinion shafts, each of the plurality of pinion shafts having a first and a second end, each of the plurality of pinion shafts rotatably secured within one of the plurality of ejector rails,
- a first plurality of pinion gears fixedly attached to the first end of each of the plurality of pinion shafts and engageable to one of the plurality of rack gears, and
- a second plurality of pinion gears fixedly attached to the second end of each of the plurality of pinion shafts and engageable to one of the plurality of rack gears.
2 more elements
Dependencies are inferred from the claim text.