§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3658322A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for handling sheets

Assignee: Individual
•
Filing: 1970-05-27
•
Granted: 1972-04-25
•
Expires: 1990-05-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The herein method and apparatus is used in connection with a corrugator machine. Corrugator machines convert paper from a web roll into flat corrugated box blanks. Such corrugator machines have a number of sections for forming such box blanks, and the devices in these sections are driven in synchronism by a line shaft. In the herein apparatus the blanks discharged from the corrugator lengthwise are moved at right angles, then shingled and stacked. The velocity of each of the steps in handling the sheets is co-ordinated for a relative speed ratio between the right angle take off of the sheets, the shingling and stacking, and is co-ordinated with the speed of the corrugator machine, through the line shaft in such a manner that when the corrugator speed varies, then the right angle take off, the shingling and the stacking also varies, but the same relative speed ratios between the right angle take off conveyor, shingling or transfer conveyor, and stacking conveyor are preserved. The ratio adjustments are predicated on the basic equation of the speed of movement on the right angle take off which receives the blanks from the corrugator as follows: Vd (W/L) Vc (1-S) in which Vc is the speed of the corrugator in ft./min., Vd is the speed on the right angle take off, W is the width and L is the length of the blank, and S is the ratio of the shingle, namely, S O/W in which O is the overlap; and the basic equation for the speed of the transfer conveyor or shingling conveyor relatively to the right angle take off is Vt (W/L) Vc (1-St) IN WHICH Vt is the speed of the transfer or shingling conveyor in ft./min. and St is the ratio of the shingle on the transfer conveyor; and the basic equation for the speed of the stacker is Vs (W/L) Vc (1-Ss) IN WHICH Vs is the speed of the stacker conveyor in ft./min. and Ss is the ratio of the shingle on the stacker. A device is provided for adjusting the ratio of the respective conveyors to predetermine the speeds of the conveyors relatively to the speed of the corrugator in accordance with the width and length of the blanks. A connection is provided to the line shaft of the corrugator so as to automatically control the overall speed in accordance with the variation of speed of the corrugator but maintaining the predetermined relative ratios between the respective conveyors.

Inventors

  • 👤 Merrill D Martin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 22:24
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/66; B65H29/6609; B65H29/6618; B65H29/12; B65H29/14; B65H29/16; B65H29/18; B65H29/50; B65H35/00; B65H2301/00; B65H2301/30; B65H2301/34; B65H2404/00; B65H2404/10; B65H2404/13; B65H2404/131; B65H2404/1315; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176; B65H2701/1766

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 286 words
In a method of stacking sheets delivered from the discharge conveyor of a sheet making machine, the steps of conveyance of the sheets from the discharge conveyor to a stacker, varying the direction and speed of conveyance at a predetermined ratio to cause the sheets to overlap consecutively at a predetermined ratio to the width of the sheets, and controlling the velocity of the movement of the sheets in accordance with the velocity of said sheet making machine and the length and width of the cut sheet, and maintaining the said predetermined velocity ratio, said conveyance of said sheets from the sheet making machine to the stacker including, moving the sheet on a delivery conveyor lengthwise, discharging the sheets from said delivery conveyor to a take-off conveyor thereby to change the direction of movement of said sheets to widthwise direction, discharging the sheets widthwise to a transfer conveyor at a different relative velocity, transferring said sheets from said transfer conveyor to a stacker conveyor widthwise at a different velocity, the relative velocities of said conveyors predetermining the spacing and overlap of the consecutive sheets on the stacker conveyor, driving each of said conveyors at its own predetermined variable speed controlled in accordance with the length and width of the cut sheets and in accordance with the velocity of the sheet making machine, the relative velocity of movement of the sheets from said machine to said stacker being determined by the following basic equation: Vd W/L Vc in which equation Vd is the speed of delivery, W is the width, L is the length of the sheet and Vc is the speed of the corrugator in ft./min., modified by the ratio of the overlap forming the shingle.
Claim 2
Dependent Claim 286 words
In a method of stacking sheets delivered from the discharge conveyor of a sheet making machine, the steps of conveyance of the sheets from the discharge conveyor to a stacker, varying the direction and speed of conveyance at a predetermined ratio to cause the sheets to overlap consecutively at a predetermined ratio to the width of the sheets, and controlling the velocity of the movement of the sheets in accordance with the velocity of said sheet making machine and the length and width of the cut sheet, and maintaining the said predetermined velocity ratio, said conveyance of said sheets from the sheet making machine to the stacker including, moving the sheet on a delivery conveyor lengthwise, discharging the sheets from said delivery conveyor to a take-off conveyor thereby to change the direction of movement of said sheets to widthwise direction, discharging the sheets widthwise to a transfer conveyor at a different relative velocity, transferring said sheets from said transfer conveyor to a stacker conveyor widthwise at a different velocity, the relative velocities of said conveyors predetermining the spacing and overlap of the consecutive sheets on the stacker conveyor, driving each of said conveyors at its own predetermined variable speed controlled in accordance with the length and width of the cut sheets and in accordance with the velocity of the sheet making machine, the relative velocity of movement of the sheets from said machine to said stacker being determined by the following basic equation: Vd W/L Vc in which equation Vd is the speed of delivery, W is the width, L is the length of the sheet and Vc is the speed of the corrugator in ft./min., modified by the ratio of the overlap forming the shingle.
Claim 3
Dependent Claim 30 words
The method specified in claim 1, wherein the travel of the sheet during said conveyance passes through different areas of different velocities, and said ratio velocities being between said areas.
Claim 4
Dependent Claim 53 words
The method specified in claim 1, said sheet making machine being a corrugator, and all of said conveying steps of said sheet being controlled by the velocity of the sheets discharged from said corrugator without changing said predetermined ratio of velocity in the different areas of conveyance of said sheets to said stacker.

References Cited (Backward Citations)

US1802775A Cited
US2498061A Cited
US2670955A Cited
US2674853A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-04-25 1975-10-25 1976-04-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-25 1979-10-25 1980-04-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-25 1983-10-25 1984-04-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag