05-12-2013 дата публикации
Номер: US20130320614A1
Sheet deceleration apparatus and methods for decelerating a sheet of material for use in a sheet stacking or other application. The deceleration apparatus includes a rotatable cam nip, rotatable about a first axis and provided on one side of the travel path, such that the sheet of material can pass by the cam nip. The cam nip includes a lobe end, such that when the lobe end is away from the travel path, the sheet of material can pass substantially unimpeded past the cam nip, and when the lobe end is near the travel path, the sheet of material is nipped by the cam nip decelerating the sheet of material from the first speed to a second speed. 121-. (canceled)22. A method for decelerating a sheet of material traveling along a travel path at a first speed , the method comprising:delivering the sheet of material past a cam nip comprising at least one lobe end, the cam nip being rotatable on a first axis substantially perpendicular to the travel path; anddriving rotation of the cam nip, such that when the at least one lobe end of the cam nip is away from the travel path, the sheet of material can pass substantially unimpeded past the cam nip, and when the at least one lobe end is adjacent the travel path, the sheet of material is nipped by the cam nip to change the travel path of the sheet of material so that the sheet of material comes into frictional contact with a decelerator to decelerate the sheet of material from the first speed to a second speed.23. The method of claim 22 , whereinsaid cam nip comprises at least two lobe ends and each lobe end comprises a rotatable wheel.24. The method of claim 22 , whereinsaid at least one lob end comprises a rotatable wheel.25. The method of claim 22 , whereinsaid decelerator is a deceleration roller.26. The method of claim 25 , whereindelivering the sheet of material past a cam nip comprises delivering the sheet of material between the deceleration roller and the cam nip, the cam nip and deceleration roller being rotatable on ...
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