Longreach linear pick-and-place assembly apparatus

• US 4,453,882 A
• Filed: 04/27/1982
• Issued: 06/12/1984
• Est. Priority Date: 04/27/1982
• Status: Expired due to Term

• Current Assignee: Emerson Electric Company
• Original Assignee: Emerson Electric Company
• Inventors: Mang, Josef
• Primary Examiner(s): Paperner, Leslie J.
• Assistant Examiner(s): Siemens, Terrance L.
• Application Number:
  US06/372,319
• Time in Patent Office: 777 Days
• Field of Search: 414/222-225, 414/680, 414/715, 414/749, 414/718, 414/728, 414/729, 414/750-753, 198/486, 198/489, 74/51, 74/53, 74/54
• US Class Current: 414/728
• CPC Class Codes: B65G 47/902 provided with drive systems incorporating rotary and rectilinear movements
• CPC Class Codes: Y10T 74/1828 Cam, lever, and slide

Abstract

An assembly apparatus of the pick-and-place type having an elongated reach and including an intermittent motion drive mechanism having an output crank arm operable to stop at selected locations. A pivot plate assembly is rotatably journalled to the intermittent motion drive mechanism about the output thereof and capable of being drivably oscillated thereabout. A linkage slide assembly is carried by the pivot plate and comprises slide rods which are pivotally connected to the output crank arm of the intermittent motion drive mechanism for transmitting rotational oscillation into linear sliding movement. A cam member driven by the input of the intermittent motion drive mechanism and engages cam followers carried by the pivot plate assembly. Rotation of the cam member drivably oscillates the pivot plate thereby providing rotatable oscillation to the linearly reciprocating slide rods.

Claims

1. A power driven, pick-and-place assembly apparatus for linearly transferring a workpiece through an elongated reach from one station to another, the apparatus comprising:

intermittent motion drive means having a rotating output crank arm operable to stop at multiple locations;

pivot plate means rotatably mounted to said intermittent motion drive means and operable to be drivably pivoted about the axis of rotation of said output crank arm;

slide linkage means carried by said pivot plate means and comprising elongated slide rod means slidably received for linear reciprocation within bushing means supported by said pivot plate means, said slide rod means characterized as being pivotally connected to said output crank arm; and

cam drive means interconnected to said pivot plate means and operable to drivably oscillate the same between respective angularly rotated positions;

whereby rotation of said output crank arm of said intermittent motion drive device causes said slide rod means to be linearly reciprocated between respective positions, while operation of said cam drive means further causes said pivot plate means and said bushing means and slide rod means carried thereby to be rotatably oscillated.

2. The invention of claim 1, wherein said intermittent motion drive means comprises an index drive mechanism operable to oscillate said output crank arm between opposed locations.

3. The invention of claim 1, wherein said cam drive means comprises plate cam means driven by the input of said intermittent motion drive means and drivably engaged with roller follower means carried by said rotatable pivot plate means.

4. The invention of claim 3, and including gear transfer means driven by the input of said intermittent motion drive device means and operable to drive said plate cam means.

5. The invention of claim 1, and including gripper support means carried by said slide rod means.

6. A linear motion assembly apparatus of the pick-and-place type adapted to transfer a workpiece through an elongated reach between a first station and a second station, including a support housing, a power driven intermittent motion drive mounted within said housing and operable to drive an output crank arm between multiple stop positions, an intermediate pivot plate assembly comprising a pivot plate rotatably supported on said support housing and operable to pivot about the axis of rotation of said output crank arm, a slide linkage assembly mounted on said pivot plate and comprising bushing means slidably supporting elongated rod means, said elongated rod means pivotally connected to said output crank arm whereby the intermittent rotary motion of said crank arm is transferred into linear sliding reciprocation of said rod means, gripper support means carried by said elongated rod means, and cam drive means drivably engaging said rotatable pivot plate and operable to oscillate the same between respective rotary positions thereby to provide rotary oscillation to the linearly reciprocated rod means.