US1109676A

US1109676A - Device for separating metal sheets.

Info

Publication number: US1109676A
Application number: US73738412A
Authority: US
Inventors: Albert E Grant
Original assignee: JOHN MOIR GRANT
Current assignee: JOHN MOIR GRANT
Priority date: 1912-12-18
Filing date: 1912-12-18
Publication date: 1914-09-08
Anticipated expiration: 1931-09-08

Description

A. E. GRANT.

DEVICE FOR SEPARATING METAL SHEETS.

APPLICATION FILED DEG.18, 1912.

1,109,676, Patented Sept. 8, 1914.

5 SHEETT-SHEET l.

WITNESSES; INVENTOR Wei, 6042, avg QM (fWMM ATTY v A. E. GRANT.

DEVICE FOR SBPAHATING METAL SHEETS.

APPLICATION FILED DEG. 18, 1912,

Patented Sept. 8, 1914.

5 SHEETS-SHEET 2.

ATTY

A. E. GRANT.

DEVICE FOR SEPARATING METAL SHEETS.

APPLICATION FILED DBO.18, 1912.

1,109,676. V f Patented Sept. 8, 1914.

5 $HEETSSHEET 3.

WITNESSES; I VENTOR 'Mu/f? 9 @mazfi fl BY W I A. E. GRANT.

DEVICE FOR SEPARATING METAL SHEETS.

APPLICATION FILED DEC. 18, 1912.

Patented Sept.8,1914.

5 SHEETS SHBET 4.

ATTY

A, B. GRANT. DEVICE FOR SEPARATING METAL SHEETS.

APPLICATION FILED DEO.18, 1912.

Patented Sept. 8, 1914'."

5 SHBET$SHEET 5.

'INVENTOR. wm

WITNESSES:

Mai 60 041 ATTY UNITED fsra'rns PATENT o mucn.

ALBERT E. GRANT, OF TROY, NEW YORK. ASSIGN OR T0 JOHN MOIR GRANT, OF PITTSBURGH, PENNSYLVANIA.

To all? 'lc/znm it may concern:

Be it known that I, ALBERT E. GRANT, a

citizen of the United States of America, residing at the city of Troy, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Devices for Separating Metal Sheets, of which the following is a specification.

My invention relates to devices for separating metal sheets, and the object of my invention is to provide a machine for opening a pack of metal sheets and delivering each separate sheet from tlie machine; together with such elements and combinations as are hereinafter more particularly set forth and claimed. I accomplish these objects by means of the mechanism illustrated in the accompanying drawings, in which Figure l'i's a plan of the machine. Fig. 2 is a side elevation. Fig. 3 is an end view. Fig. 4 is an enlarged section along the line A-A on Fig. 2. Fig. 5 is an elevation of the vacuum cup and clamps. Fig. 6 is a plan of the vacuum plunger. Fig. 7 isa detail view of the segment gear and its conne'-c-.

tions. Fig. 8 is a detail view of the pinch rollers, showing their position when the metal sheets are first put in the machine.

Fig. 9 is a detail view, showing'the position of the pinch rollers after the metal sheets have beenoperated uponby them. Fig. 10 is a detail View with parts broken away, showing the-track and the position of the -metal sheets as they are moved by the racks.

' Fig. 11 is a detail view of the pawl and trip mechanism. Fig. 12 is a detail view of the disks, 18 and 25, and manner of connecting them up. 1

Similar numbers refer to similar parts throughout the several views.

,In the manufacture of metal sheets of .light gage, tin plate, etc., it is the practice to double the sheets one or more times and roll them. together in .what is known as a pack. A pack contains from two to eight or more thin sheets slightly stuck together in the process of rolling.' The sheets in the pack are then separated, or, as generally termed, opened by hand.

The machine is. constructed essentially as follows The small'idle rollers l, 2 and 3,

revolve in the notched slide, 6, and the roll-- ers,..4 and 5, revolve in the. two arms. 7,

Specification of Letters Patent.

Patented Sept. 8, 1914.

Application filed December 18, 1912. Serial No. 737,384.

which are held together by the plate, 8, see F lgs 8, 9 and 10. The arms with rollers, and o, are lunged on the trunnions of roller.

o, and when the slide, 6, is drawn up the .rollers, 9, also attached to the arms, 7, roll on the tracks, 10, shown in Figs. 9 and 10, and cause rollers, 1, 2, 4 and 5, to come in contact with one another and pinch'the end of the pack, as shown in Figs. 9 and 10 and by the dotted and dash lines in Fig. 2. 'The lever, 11, to which is attached the weight, 12, 1S pivoted at 13, and is held in position bv theset screw, 14. g It isalso connected by the rod, 15, to the lever, 16, which is pivoted to the bar, 17. This bar is held in a notch in the disk, 18, by the spring, 19, see Fig. 10. The lower end of the lever, 1.6, is'gr'ooved to fit over the rod, 20, and .is limitedin its travel by a nut on the end of the rod. other end of this rod is fastened to the arm, 21, which is fastened to the shaft, 93, see Fig} 3. To this shaft is 'also'fastened the long arm, 92. The other long arm, '91, is pivoted at 22. Both long arms extend up through a slot in table, 23, and are each held A against the pack on the table by the springs,

24, see Fig. 2.

\Vhen the last sheet in the pack on the table has been taken away, the long arms are forced by springs to the end oftheir slots in the table, 23, and pull the nut on the end. of rod, 20, against the end of lever, 16.

hen a new pack is placed on the plate, 8, itslides down and strikes the end of lever, 11, which is forced back and pulls lever, 16, which pulls the bar, 17, from the notch in disk, 18, see Figs. 7 and 10. With this arrangement, .or something of similar construction, the'sheets in the pack on the table must be placed on the plate, 8, before the bar can be drawn from the notch in disk, 18.

-The disk, 18, is in one piece with disk, 25,

shown in Figs. 1 and 1.2, which is provided with a notch for the pawl, 26, and pivot, 27, see Figs. 2, 7 and 11, which is connected by the rod, 28, to the movable end of the table, 23, as shown in Figs. 2, 4 and 11, which swings about the pins, 29, andwhich is made yielding to accommodate di'ifercnt thicknesses of packs" by the springs, 88, 89, and

90. \Vhenthe bar, 17, is pulled from the notch in disk, 18, which is loose on the shaft, 30, it revolves on the shaft and lets. the table drop down to a position shown by dotted and dash lines in Fig. 2 and by full lines in Fig. 10, and which is limited by a stop.

lVhen the disk drops it strikes the bar,

'31, and pulls the clutch pin, 82, from its makes about seven-eighths of a revolution and only when the gear, segment is in its extreme right-hand position can the jaw of the sliding clutch enter the notch in the pinion. \Vhen the gear segment throws to the left, when the clutch is in, it revolves the shaft, 30, to which is keyed the gear wheels, 30 and 37, and pawl arm, 38,. The gears engage with'the racks, 39 and 40, which are fastened to the slide, 6, see Figs. 1, 2, 7 and 10. The pawl arm brings the pawl behind the notch in the disk and when the gear seg ment, 35, travels to the right the pawl on arm, 38, engages with thenotch in disk, 25, and brings disk, 18, and pivot, 27, up'until the bar, 17, springs into the notch in disk, 18, see Figs. 10 and 11. At this point the pawl is released from its notch in disk, 25,

y striking against the lug, 41, and is held in position by the bar, 17, in the notch in disk, 18, shown in Figs. 7 and 10.

In bringing the disk and pivot up, the movable end of the table, 23, which is connected to the pivot, 27, by the rod, 28, is also brought up and the bar, 81; is released and the clutch pin, 32, pulls the sliding clutch, 33, from the pinion, 34, which is then free to rotate backward and forward with the gear segment, 35.

The gear segment, 35, is keyed to the shaft, 42, to which also keyed thearms, 48 and 44. The arms are rocked back and forth by the connecting rod, 45, which is pinned to the gear wheel, 46, keyed to shaft, 48, see Figs. 1 and 2. This gear is rotated by engaging with the pinion, 47, keyed to the shaft, 49, which is driven by means of the belt pulley, 50, (or a motor, an engine or any other convenient form of power), see Fig. 1. The upper ends of the arms, 43 and 44, are slotted to receive a sliding hearing which turns on the trunnions of the large roll, 51, and cause it to roll back and forth on the movable table, 23, which holds the pack to be separated- The large roll, 51, is

held from sipping by the gears, 52 and 53, which are keyed to the trunnions of the large roll and engage with-the stationary racks, 54 and The rollers, 56 and 57, are loose on the trunnions of roll, 51, and are in contact with the rails, 58 and 59, which are stationary and prevent the large roll from being lifted from the pack on the table, The shoe, 60, slides over the pack on the table and is connected to the trunwheel keyed on the shaft, 49.

The stationary dogs, 67 and 68, are pivoted and fall behind the ack when slide, 6, bringsit up and when it returns they pull it from between the rollers in the slide and hold it until the table, 23, forces it up in contact with the under side of roll, 51. It will be noticed that the pack of metal plates is delivered in a position diagonally to the axis of the machine, as is shown in Fig. 1, where the pack is illustrated by dash lines, 100. The pack is then held from being pushed forward by the arms, 91 and 92, by the lugs, 69 and 70.

Recesses are provided in the shoe, 60, and roll, 51, to allow them to pass over the lugs, 69 and 70, and the ends of arms, 91 and 92.

In the body of the large roll, 51, is a means for producing a vacuum, see Fig. 4, which pulls off the top sheet of the pack and holds it against the surface of the roll where it is held by a clamp. This consists of a rod, 71, help up by the spring, 72, which is strong enough to break the vacuum in the vacuum cup, 7 3, which is made of some pliable material, attached to the lower end of the rod, 71.- To the rod is pivoted one end of a bell crank, 74, the other end being pivoted to the movable pin, 75. To the rod is also attached a collar, 76, as shown in Figs. 4 and 5, to which is pivoted one end of the toggles, 77 and 78, the other ends being pivoted to the endsof the bell cranks, 79 and 80, and the ends of the bell cranks are pivoted to the clamps, 81 and 82, which are given a parallel motion by the links, 83 and 84.

\Vhen the roll, 51, is in its extreme lefthand position, as shown by dash lines in Fig. 4, the movable pin, 75, strikes against a projection, 109, on the frame of the machine, and by the aid of the bell crank, 74, forces rod, 71, down, thereby opening the clamps and squeezing the air from the vacuum cup, 73, producing a vacuum. lVhen the roll, 51, starts to the right the pin, 7 5, is released and the spring, 72, pulls up the rod, 71, and the vacuum cup, 73, which brings With it the corner of the top sheet, 110, in the pack. At the same time the clamps, 81 and 82, close and hold the sheet firmly against the surface of the roll, 51, and hold it there as it rolls toward the right, pulling a sheet with it from the pack which is held down to the table by the sliding shoe, 60, and by the the guides, 86 and 87. This is shown clearly in Fig. l. Afterleaving the machine the sheets are either piled or carrled away by a conveyer.

I do not limit myself to the form or-construction of the machine, as disclosed, because the roll, 51, may operate on a curved surface as well as on a straight surface, and in a vertical-or inclined plane as well as in a horizontal plane. Nor do I limit myself to the manner of causing the pack to enter the machine; nor the means for delivering the pack to. thetable, 23; nor the means for operating the machine. i

What I claim as my invention and desire to secure by Letters'Patent is:

1. A device for separating sheets of a pack, comprising a means for pinching and bending one corner ofthe pack, thereby loosening the sheets from each other at that corner; a vacuum cup; and means for bringing the vacuum cup in engagement with that corner of the sheets, one after another, that have been thus loosened.

2. A device for separating separate sheets of pack of metal plates, comprising a yielding table; means for conveying the pack of sheets to the table; means for bending the ends of the sheets; a vacuum cup;

means for applying said vacuum cup to one of the sheets and lifting said sheet from the pack; means for holding the other of said sheets than the one thus separated in position on the table until the separated sheet is,

entirely removed from the pack.

3. In a device for separating sheets of a pack of metal plates, means for conducting the pack to a yielding table; a yielding table; means in connection With said table for causing it to be moved in the same plane as said conducting means, whereby the pack may he moved along sa1d conducting means onto said table; a vacuum cup; means for causing said vacuum cup to engage the upper sheet of the pack; means for causingsaid vacuum cup to lift said upper sheet and carry, the same clear of the pack; means for engaging said sheet after it'has been separated from the pack; means for causingsaid vacuum cup to break its connection with the sheet, substantially as described.

1. In a device for separating sheets of a pack of metal 'plates, mea'ns for conducting the pack, comprising a plate upon which the pack is placed; a series of rollers adapted to engage and bendthe ends of the pack when .the plate containing them is moved toward a horizontal position; means for moving the pack held by the said rollers to a yielding table, substantially as described.

' '5. In a device for separating sheets of a pack of metal-plates, a large roll; a table over which it rolls; asliding shoe; rods connecting said shoe to the trunnions of the said large roll; means carried by said roll for separating from the pack one of the sheets; and means for causing said shoeto hold the remaining sheets of the pack on the table during the operation of the large roll.

6. A device for separating sheets of a pack of metal plates, comprising a plate adapted to raise the pack and hold it with one end' elevated above the other; a series of rollers so arranged and connected up that when the pack is moved toward the horizontal the rollers will grip the ends of the pack and bend the same; means for moving the pack as thus held by the rollers toward a yielding bed; a yielding bed; means for engaging the pack and causing it to leave the rollers and rest upon the bed; mechanical-means applied to the pack resting on thebed for raising one end of one of the layers of said pack; means for guiding the raised layer of said pack away from the machine, substantially as described.

Copies of this patent may be obtained for live sac-1i. byasidressing the 'vvashingtoigfi G.

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