US 3,992,001 A · Sheet handling apparatus

Abstract

This invention pertains to the type of apparatus for handling sheets shown in U.S. Pat. No. 3,658,322 and particularly to the take-off conveyor on such apparatus on which the direction of the sheets issued from the sheet making machine is changed toward a stacker. The improvements pertain to the accurate adjustment of the back-up means on the take-off conveyor to correspond to the length of the sheets delivered from the sheet making machine thereby to allow accurate stacking of the bundles of sheets on the take-off conveyor; the adjustability is accomplished through a suitable selector dial on circuit control device which is calibrated for the length of the sheets and which when set to the particular length then through an electric circuit and driving mechanism moves the back-up abutments to that selected measurement accurately and automatically; another improvement is the adjustability of the snubber device at the discharge end of the take-off conveyor for adjustment to the thickness of the bundles of sheets; a further improvement includes adjustable snubbers on the layboy at the intake of the stacker device for adjustment to the width of the sheets for the proper transmittal of the sheets to the stacker conveyor.

Claims16

Dependent claims

In a conveyor system having delivery means to deliver sheets from a sheet making machine, and a take-off conveyor for changing the direction of conveying the sheets at about right angles toward a stacker device, and back-up means on the take-off conveyor spaced from said delivery means to a distance substantially equal to the side of the sheet lengthwise of said delivery means,

the improvement of
adjusting means for adjusting the spacing of the back-up means to the length of said side of said sheets including
a device on the take-off conveyor connected to said back-up means for moving said back-up means transversely across the conveyor to a selected distance,
an electric circuit operating said device,
adjustable control means for controlling said electric circuit,
switch means in said electric circuit being normally held in an initial circuit breaking position by said control means;
coacting means between said switch means and said control means for moving said switch means into circuit closing position for a predetermined period according to the adjustment of said adjustable control means,
connecting means between said adjustable control means and said moving device for returning said adjustable control means to said initial position as the back-up means is moved into the adjusted position.

5 more elements

An adjustable back-up device for aligning sheets discharged on a take-off conveyor,

a frame for the take-off conveyor,
abutment support means on the frame of the conveyor,
abutment means on said support means positioned to stop the transverse movement of the sheets delivered on said conveyor thereby to align the edges of the sheets on the take-off conveyor,
power means for moving said support means in a direction transverse with respect to the take-off conveyor,
means to energize said power means,
a manipulatable element having indicia thereon and being adjustable to a pre-determined indica for the selected adjustment,
connecting means between said energizing means and said manipulatable element for holding said energizing means in an initial inoperative attitude and to actuate said energizing means in selected direction according to the adjustment of said manipulatable element,
and converting means related to said support means and to said manipulatable element to return said manipulatable element to said initial de-energizing position after the adjusting movement of the abutments to the selected adjustment.

5 more elements

An adjustable back-up device for a take-off conveyor having parallel spaced frame members transverse to said conveyor,

a support bracket riding on each frame member,
a connecting element connecting said brackets for aligning the brackets,.
said connecting element being substantially parallel with said conveyor,
abutment means supported on said connecting element between said brackets and above said conveyor facing toward the side of the conveyor from which sheets are received thereby to align sheets delivered onto said take-off conveyor,
moving means on said frame members for simultaneously moving said brackets to a selected distance from said delivery side of said conveyor,
electrical driving means to operate said moving means,
an electrical circuit for actuating said driving means,
a circuit breaker adapted to close said electrical circuit selectively in either of opposite directions for moving said brackets in the respective directions,
a manipulatable adjustor element related to said circuit breaker normally in an initial position holding said circuit breaker in circuit-opening position and being adapted to close said circuit breaker for either of said directions according to the adjusting manipulation of said manipulatable adjustor,
and means coordinated with the movement of said brackets to return to said manipulatable adjustor element to the initial circuit breaking position whenever said brackets reached the selected adjustment.

7 more elements

Dependencies are inferred from the claim text.

Sheet handling apparatus

Life of this patent

Sheet handling apparatus

Life of this patent

Abstract

Claims16