Sheet-material associating – Associating and folding – Sheet associating
Patent
1990-12-05
1992-02-18
Kwon, John T.
Sheet-material associating
Associating and folding
Sheet associating
270 48, 270 50, 493424, 493427, 493432, B42C 100
Patent
active
050887084
ABSTRACT:
The folding cylinder assembly has: rotatable folding cylinder having three pin lever shaft assemblies spaced substantially equally about the folding cylinder, each of the pin lever shaft assemblies having at least one pin and a cam follower positioned on a first end of the folding cylinder; one piece cam for interfacing with the cam followers, the one piece cam rotationally mounted on the first end of the folding cylinder, the one piece cam having two lobes which periodically contact the cam followers as the cam rotates; mechanism for rotating the folding cylinder and the cam such that the cam and the folding cylinder have a first relative angular velocity for the first mode of operation and second relative velocity for the second mode of operation, wherein in the first mode of operation the folding cylinder rotates at a substantially constant angular velocity and the cam rotates at one and one-half times the substantially constant angular velocity in the same direction of rotation as the folding cylinder, and wherein in the second mode of operation the folding cylinder rotates at the substantially constant angular velocity and the cam rotates at three-quarters of the substantially constant angular velocity in the same direction of rotation as the folding cylinder. The rotation of the cam imparting to each of the pins on the pin lever shaft assemblies via the cam followers, respectively, a predetermined motion profile in both the first and second modes of operation. The predetermined motion profile is a modified sine-harmonic motion profile in a preferred embodiment.
REFERENCES:
patent: 3038719 (1962-06-01), Tyma
patent: 3460823 (1969-08-01), Neal
patent: 4445881 (1984-05-01), Bullen
patent: 4778166 (1988-10-01), Nanba
patent: 4822328 (1989-04-01), Bertolini
Hamann H. F.
Kwon John T.
Newholm Therese M.
Patti C. B.
Rockwell International Corporation
LandOfFree
Folding cylinder assembly having one piece cam does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Folding cylinder assembly having one piece cam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Folding cylinder assembly having one piece cam will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1817782