Drive for linear pick-and-place assembly apparatus
AssigneeEmerson Electric Co.
InventorDon G. Sandrock
Life of this patent
Estimating the term…
Abstract
An improved drive apparatus for use with linear pick-and-place assembly devices is disclosed, which drive apparatus includes a movable carriage having an improved guide track assembly. The guide track assembly comprises a series of V-rollers and mating V-tracks to provide the vertical and horizontal translational movements for a linear pick-and-place assembly device's output member. The guide track assembly includes V-roller elements which can be eccentrically adjusted to create a tight, pre-loaded sliding engagement with the mating V-tracks, all so as to substantially eliminate any undesired end play movement within the movable carriage.
Claims13
A pick-and-place assembly for moving work pieces cyclically between adjacent work stations, said assembly comprising:
- an input shaft rotably mounted in a housing and having a lift cam and a translator cam mounted thereon;
- first and second output shafts rotably mounted in said housing generally transverse to said input shaft;
- a first cam follower mounted on said first output shaft and engaging said translator cam, and a second cam follower mounted on said second output shaft and engaging said lift cam;
- a carriage plate disposed in said housing and having a first set of V-rollers mounted thereon for slidably engaging respective V-tracks mounted on a carriage guide bar in said housing, said carriage plate having a second set of V-rollers mounted thereon and positioned to slidably receive respective V-tracks mounted on a translator bar;
- a translator arm having a first end mounted on said first output shaft and a distal end positioned to engage said translator bar such that when said input shaft is rotated, said translator arm imparts horizontal movement to said translator bar;
- and
- a lift arm having a first end mounted on said second output shaft and a distal end connected to said carriage plate such that when said input shaft is rotated, said lift arm impacts vertical movement to said carriage plate and said translator bar.
The invention of claim 3 wherein said carriage guide bar is fixedly mounted to said housing.
Dependencies are inferred from the claim text.