US1451879A - Mechanism for stamping large hot metal sheets - Google Patents

Description

W. A. LACKE MECHANISM FOR STAMPING LARGE HOT METAL SHEETS Apr. 17, 1923.

Filed May 22; 19 21 3 Sheets-Sheet fzvsnfor- WZZzZzm A. .Zac/fe;

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Apr. 17, 1923. 1,451,879

W. A. LACKE MECHANISM FOR STAMPING LARGE HOT METAL SHEETS Filed May 25 1921 S SheetsS heet 2 JrwerzZZr' willz'amflzacfe; "J,

' Apr. 17, 1923. 1,451,879

w. A. LACKE MECHANISM FOR STAMPING LARGE HOT METAL SHEETS Filed May 23 1921 3 Sheets-Sheet 5 Patented Apr 177, i923,

ii a r WILLIAM A. LAGKE, OF CHICAGO, ILLINOIS.

MEGHANISDI FOB STAIVIPII IG' LARGE HOT IEETAL SHEETS.

Application filed May 23,

To all whom it may concern:

Be it known that 1, WILLIAM A. LAoKn, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Mechanism for Stamping Large Hot Metal Sheets, of which the following is aspecification.

This ii'ivention relates to mechanism for handling large hot metal sheets, such as are used for corrugated freight car ends from the time they come from the heating furnace until they have passed thru and 'removed from the corrugated or other stamping machine and to do it in such a way that a large production can be handled one after the other with accuracy and precision. as to the placing and removing of the plates and with comfort to the operator.

The invention consists in mechanism for attaining the foregoing objects which is comparatively economically constructed, is very satisfactory in use, and is not readily liable to get out of order. More particularly the invention consists in many features and details of construction more fully set forth in the specification and claims.

Figure 1 of the drawing is a plan view showing aportion of the plate heating furnace claimed in a prior application Serial No. 466,184, filed May 2 1921; the (:orrugating press; the mechanism for delivering a sheet from the furnace to the corrugating press; the mechanism for there centering it and finally the mechanism. for

' removing the plate from the press.

Figure 2 is a side elevation of the mechanism of Figure 1.

Figure 3 is a vertical sectional detail view showing the press members in the operation of corrugating a sheet.

Figure 4: is a detail view showing the withdrawing tongs in the position which they assume as they start to grip a sheet.

Figure 5 is a changed position View of Figure 4.- showing the tongs gripping the sheet.

Figure 6 is a detail plan view of means for positioning the plate in the corrugating press.

Figure is a side view of the mechanism of Figure 6 in withdrawn position ready to let a plate pass on to the press and starting to position the plate before corrugating or to remove it after corrugating.

1921. Serial No. 471,702.

Figure 8 is a changed position view of the parts of Figure 7 with the plate in position for corrugating.

Figure 9 shows the major portion of the parts of Figure 8 in the position assumed after a plate has been corrugated after the mechanism shown has lifted the plate off from thedie so'that it is ready for removal from the press.

Figure 1 shows approximately one half of a furnace 12 thru which sheet metal plates 14iare successively fed thru positions 14:, 143 to delivery position 14 by the mechanism fully set forth in said prior application. On arriving at position 14: plate 1 rests upon supports 16 and is adapted to be moved to the left as viewed in Figure 1 along tracks 18 to the position 16! where it is between corrugation forming: die members 2022, Figure 3 ready to have corrugations 24 (Figure 9) impressed thereon.

In order to move the plate 14c from position 14- to position 14, a pair of track rails 26, are provided as shown in Figure 1, extending along the end of the furnace parallel to the rails 18, heretofore referred to. these rails 26 travels a car 30 driven by any suitable means as for instance eleci trio motor 32. Extending from the side of this car over center line of rails 18 is a girder mechanism 3 1', provided with a pivoting shaft on which is journaled a plate pushed frame mechanism 38 normally sustained in full line position by a counterweight 4'20. This frame mechanism 38 is provided on its edge, adjacent to plate 141 to be movech with a set of notches 42 normally movable horizontally in the plane of plate 14-, with the result that when the operator starts motor 32 to move car 30 to the left as viewed in Figures 1 and 2 notches 42 engage the plate 14 to force the plate off from support 16 on to and along rails 18 until theplate reaches almost exact position over die member 20. Because of the fact that the level of this die is below rails 18 the plate 14L drops down 01f from the ends of the rails 18 and frame member 3 8 partially follows it, in its fallby tiltlng it to the dotted line position of Figure ,2. As soon as the plate has taken its new position on the die 20 the operator reverses motor 32, thus withdrawing the pushlng mechanism carried by the car 30, from the dotted line to the full line position of ure 2, where the apparatus is ready to talre care of thenew plate 14 coming out of the furnace 12.

In ordinary practice this pushing mechanism operated by car will put the plate let within approximately a half an inch of correct position at ll but this is not accurate enough as it is very desirable and essential to avoid the expense of trimming a large amount of metal oil from the plate, ,t'or all metal so out ofi is substantially waste. or this reason. it is necessary to provide means for accurately positioning the plate.

This mechanism includes four air cylinders 44 placed on opposite sides of the die 20 andon opposite sides of the line of travel of the plate as it enters the corrugating press and an additional one cylinder l6 placed at the entrance end of the press below the level of track 18 so that it is out of the way of-pla-te 1%. as it travels into the die press, in the manner described.

Each of these cylinders is provided with a conventional form of piston 48 controlled "by the admission and withdrawal thru'air controlpipebO under the control of an operator. Each piston t8 drives a piston rod 52 which extends outward from the end of the cylinder toward the die press and carries a crosshead 5st guided by a rod 56. Crossheadb carries on its face which is away from the cylinder a notched block '60 having a relatively long projecting lowered wedge finger 62 adapted to travel on the upper surface of the edge portion A the die 20. The travel of each of these jaws is such that when in the position of Figure 7 they are entirely out of the way of: plate 14, which is being moved on to OIcOllf from die 20, and that when moved to the position of Figure 8 in the act of placing the plate, the bottom 66 of the notches engage the edges of the plate to accurately position it onthe press and that when after the plate has been stamped as shown in Figure 9, they are again moved. from the position of Figure 7 to that of Figure 9. with these lower sharp fingers 62 wedn'ed under the plate the result is that the plate islitted by the inward movement of these blocks 60 from the position of Figures 3 and 4 to that of Figure 9 where the plate ran-- tirely clears the corrugations in the die and can be removed.

YVhenthe operator has manipulated cylinders 4st to accurately position the plate over the die 20, he manipulates the press by mechanism not here involved. to lower the die 22 from the position of Figure 2 where it contacts and corriipgates the plates as shownin Figure 3, and then withdraws it. The operator then again'manipulates the cylinders to lift the plate into; the position of Figure 9 in which position the plate is eane /e ready to be withdrawn from the corrugating press. Special mechanism for this purpose is provided as follows:

Track rails '70 are located on the side of the corrugating press opposite to rails 18 in such position that the plate 14- removed l rom position l-jlmoves along these rails.

Parallel to the rails TO other rails 72 are provided on which travels a car 74: suitably propelled by any suitable means as for instance electric motor- '76. Overhanging the side of this car'la a truss T8 exteni'ling over to the center line of the rails "(O at which point is placed a gripping tong mechanism consisting of a fined jaw having a sharpened wedge shaped point 82 adapted to pass from the position of Figure 4 to that of Figure 5 with the result that the plate 1% is lifted up as shown in Figure 5. Pivoted to this jaw 80 is another aw 8 L manipulatable by a lever 86 adapted to be pulled upward by the operation of an electric solenoid 88 carried in a suitable irame 90'011 the truss 78. In the operation or this part of the device of the mechanism just de scribed the parts normally stand in the position shown in Figure 2. hen a finished plate is to be removed from the press the operatormanipulates the motor 76 to advance the tone;- mechanism first to the position of Figure 4, then to that of Figure 5, whereupon he operates the solenoid S8 to grip the plate and hold it. He now manipulates the motor 76, to drive the carfiel in the opposite direction, thus withdrawing the plate 1a from position 14? out of the press and over onto the rail 70 from which it is removed and further handled by any suitable mechanism, as for instance that shown in'said prior patent application.

In actual practice the mechanism of this invention has been used in connection with hat of said prior application to comme1=- cially produce very large savings in connection with the manufacture of plates of this class.

The term truss, used in the claims, is not used in any limited sense but generically to cover any rigid arm in the position of member 34. I

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In mechanism of the class described in combination with a track along which a sheet is to be moved, another track parallel to the first track, a car adapted to travel along the second track. a truss carried by the car extending over across the first track means supported by the truss adapted to engage a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track, and a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to follow vertical movement of a sheet being moved.

2. In mechanism or" the class described, in combination with a track along which a sheet is: to be moved, another tract: parallel to the first track on a different level, a car adapted to travel along the second track, a truss carried by the car extending over across the first track. means supported by the truss adapted to engage a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track. and a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to tollow vertical movement of a sheet beingmoved.

3. In mechanism of the class described, in combination with a track along which a sheet is to be moved. another track parallel to the first track, a car adapted to travel along the second track, a truss carried by the car extending over across the first track, means supported by the truss adapted to en gage a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track, power means for driving the car and a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to follow vertical movement of a sheet being moved.

4. In mechanism Oil the class described, in combination with a track along which a sheet is to be moved, another track parallel to the first track on a different level, a car adapted to travel along the second track, a truss carried by the car extending over across the first track, means supported by the truss adapted to engage a sheet on the first track: whereby movement of the car on the second. track propels the sheet on the first track. means for propelling the car in either direction along its track. and a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to follow vertical movement of a sheet being moved.

In mechanism of the class described. in combination with a track along which a sheet is to be moved, another track parallel to the first track. a car adapted to travel along the second track. a truss carried by the car extending over across the first track, means supported by the truss adapted to enga a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track. a pivotal mount--- ing for the sheet engaging; means. permitting it to tilt in a viij'tical plane to follow vertical movement ot a sheet being moved, and means tending to hold said. plate enga ing means at a given normal level.

6. In mechanism at the class described, in combination with a track alone which a sheet is to be moved, another tra clr parallel to the first track on a difierent level. car adapted to travel along the second track, a

truss carried by the car extending over across the first track, means supported by the truss adapted to engage a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track. a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to follow vertical movement of a sheet being moved, and means tending to hold said plate engaging means at a given normal level.

'7. In mechanism of the class described, in combination with a track along which a sheet is to be moved, another track parallel to the first track, a car adapted to travel along the second track, a truss carried by the car extending over across the first track, means supported by the truss adapted to engage a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track, means for propelling the car in either direction along its track, a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to follow vertical movement of a sheet being moved, and means tending to hold said plate engaging means at a given normal level.

8. In mechanism of the class described, in combination with track along which a sheet is to be moved, another track parallel to the first track on a difi'erent level, a car adapted to travel along the second track, a truss carried by the car extending); over across the first track, means supported by the truss adapted to engage a sheet on the first track whereby movement of the car on the second track propels the sheet on the first track, means't'or propelling; the car in either direction along its track. a pivotal mounting for the sheet engaging means, permitting it to tilt in a vertical plane to follow vertical movement of a sheet being moved, and means tending to hold said plate engaging means at a given normal level.

9. In mechanism of the class described, a car, means for propelling it, a truss extending from the car to one side thereof. a frame pivoted on the end of the truss to tilt up and down in a plane parallel to the direction of movement of the car. means at one end of the frame for engaging sheet, and means nor mally holding the frame in one predetermined tilted position.

10. In mechanism of the class described. a car. means for propcllino: it, a truss extending from the car to one side thereof. a frame pivoted on the end oi. the truss to tilt up and down in a plane parallel to the direction of movement of the car, means at one end of the frame for engaging): a sheet, and counterweight normally holdin the trame in one predetermined tilted position.

11. In mechanism oi the class described, a car, means for propelling it, an arm extending from the 0211', a frame pivoted on the end In Witness whereof, I have hereunto subof the arm to tilt up and down in a plane scribed my name in the presence of two Wit-- parallel to the direction of movement of the nesses.

can, means at. one end of the frame for en- 6 gaging a sheet and means normally holding the frame in one predetermined, tilted position.

WILLIAM A. LACKE. /Vitnesses DWIGHT B. CHEEVER, VELNA GRIFFITH.

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