US2257743A - Recoiler for metal strips - Google Patents

Description

f TA.1J. R. GRER 2,257,743 Q 4 RBCOILER FOR METAL- STRIPS Filed Sept. 16,- 1938 s Sheets-Sheet 1 (11%; JIwr Grim/1144 4.

Oct. 7, 1941. A. J. R. GREER RECOILER FOR METAL STRIPS Filed Sept. 16, ess 5 Sheets-Sheet 2 Oct. 7, 1941. GREER 2,257,743

RECOILER FOR METAL STRIPS Filed Sept. 16, 1938 5 Sheets-Sheet 4 Oct. 7, 1941- A. J. R; GREER RECOILER FOR METAL STRIPS Filed Sept. 16, 1938 5 Sheets-Sheet 5 Patented Oct. 7, 1 941 UNITED STATES PATENT QFFICE RECOILER FOR METAL STRIPS Agnes J. Reeves Greer, Morgantown, W. Va.

Application September 16, 1938, Serial No. 230,304

6 Claims.

The invention relates to apparatus used in the pickling of coils of strip metal and more particularly to certain improvements upon the recoiling mechanism for preparing the coils for pickling in apparatus such as shown in my prior Patent No. 2,091,921, issued August 31, 1937, and Shoemaker Patent No. 2,120,843, issued June 14, 1938.

Pickling apparatus of the general character disclosed in the patents mentioned comprise .means for supporting the coils of metal strip upon mandrels which are rotated as they are progressed through the pickling and washing tanks whereby the coils are rotated upon the mandrels as they pass through the pickling and washing solutions.

Before the coils are entered into such a pickling machine it is necessary that the laminae of the coil be sufliciently separated so that no portion thereof will touch any other portion of the strip while in the pickling solution, in order to prevent the formation of black spots or marks on the pickled material.

The Shoemaker patent above referred to discloses a back spinner interposed between the recoiler and the pickling tank for the purpose of opening up the laminae of each coil after it has been loosely coiled upon the recoller.

While this back spinner has been found in actual practice to operate satisfactorily, it considerably slows up the pickling operation since it is necessary that each coil be first loosely recoiled upon the recoilerand then transferred to the back spinner where it is back spun until all of the laminae of the coil are sufliciently separated to insure satisfactory pickling of the metal. H a A The present invention contemplates the provision of a novel recoller, which recoils the strip and then back spins the coil to the desired extent all ma single continuous operation, thus, eliminating the back spinner disclosed in the Shoemaker patent, thereby cutting down the cost of the pickling apparatus as well as the space required to house the same, and considerably speeding up the operation of the machine.

An object of the present invention is to provide a recoiler-which will operate to coil a strip -of sheet steel or the like, so constructed that when the coil is formed the recoller may be operated in reverse direction to back spin the coil so as to separate the laminae thereof from one another,

Another object of the invention is to provide new for t di e the strip onto the rotatable drum of the recoiler and for automatically A further object is to provide means for holding the outer endof the coil against movement as the drum is rotated in reverse direction to back spin the coil.

A still further object is to provide means for quicklyand easily removing the coil from the drum of the recoller after the back spinning 10 operation.

Still another object is to provide means for straightening the strip as it is fed to the recoller.

A further object is to provide means for holding the strip under tension as it is fed .onto the recoller.

Another object is to provide means for conveying the coil from the recoller to the charging mechanism by means of which the coil is charged into the pickling machine.

The above objects together with others which will be apparent from the drawings and following description or which may be later referred to may be'attained by constructing the improved recoller in the manner illustrated in the accompanying drawings in which- Figure 1 is a top plan view of a recoller embodying the invention;

Fig. 2, a vertical sectional view-taken as on the line 2-2, Fig. 1;

Fig. 3, a fragmentary section taken on the line 3-4, Fig. 2, showing the brake mechanism for the drum of the'recoiler;

Fig. 4, a sectional end elevation of the recoller showing the. manner in which a strip is fed to the drum of the recoller and automatically clamped thereon; I

Fig. 5, a fragmentary end elevation of the recoili' showing the cbil formed thereon; Fig. 6, a view similar to Fig. 5 showing the coil 40 after the back spinning operation;

Fig. '7, a side elevation showing the mechanism -fer conveying the coils from the recoller to the charging mechanism of the pickling machine; and

Fig. 8, a perspective view of one of the sections of the drum.

Similar numerals refer to similar parts throughout the drawings.

The strip indicated generally at I. is fed to 50 the recoller by means of apparatus such as shown in Figs. 1. and 4 and carried within a housing II. This feeding mechanism may include a roller l2 journaled in the housing II and guiding the strip between the vertical edge rolls l3.

Located bey n h ge o ls "is a pair or clamping the leading end of the strip to the drum.

pinch rolls l4 geared together as by the gearing l5 and driven through a reduction gear l6 as by the motor I 6' to feed the strip forward to the recoiler,

Beyond the pinch rolls I4 is located a braking device for putting a tension on the strip III. This apparatus may comprise a pair of rolls l1 Journaled in segmental brackets l8, which are concentrically journaled as at i9 within the housing One of the brackets l8 may be provided around its peripheral edge with gear teeth 20 meshing with the pinion 2| flxed upon a shaft 22, which is journaled through one'side of the housing H and has fixed to its outer end a gear wheel 23.

A hydraulic or pneumatic cylinder 24 is provided with a plunger in the form of a rack bar 25 meshing with the gear 23 whereby operation of the cylinder will, through the gearing above described, rock the brackets i8 and with them tlsie rolls .l1 around the centers of the journals The lower pinch roll I4may be mounted in a vertically adjustable bearing 26 adapted to be urged upward toward the upper roll as by the spring 21 interposed between the slidable bearing 26 and the movable head 28 which is adapted to rest upon the stop screw 29 and is connected as by the pin 39 with the arm 3| of a bell crank lever fulcrumed as at 32 within the housing, the

arm 33 of said bell crank lever being pivotally connected as at 34 to the plunger 35 of the fluid cylinder 36 by means of which the tension upon the spring 21 may be increased.

Located beyond the brake rolls I1 within the housing is a set of level rolls including the two lower rolls 31 which may be journaled in fixed bearings and the upper roll 38 journaled in vertically slidable bearings 39 adapted to be vertically adjusted as by the screws 49 having dovetail heads 4! engaged within the dove-tail groove 42 in the bearings 39. v

A spiral gear 43 is flxed upon each screw shaft and meshes with the corresponding spiral pinion 44 upon the adjusting shaft 45, a hand wheel 46 being fixed upon the shaft for manually adjusting the upper roll 38 toward or from the lower rolls 31.

The recoiling and back spinning drum and associated parts are mounted upon a base 4'1 located beyond the housing I l, a standard 48 being supported upon said .base and having the single bearing 49 mounted thereon.

The shaft 50 of the recoiler drum is journaled through said bearing and is adapted to be driven, in either direction, by any suitable motor or prime mover (not shown). I

A bearing portion 5i is journaled upon the shaft 58 and may be provided with a depending flange 52 rigidly connected to the standard 48 by the bolts 53 so that the bearing 5| and parts carried thereby will remain stationary as; the shaft rotates in either direction.

The bearing 5| is provided with an annular housing portion 54 from which radiate several spokes 55, to the outer portions of which is connected a substantially semi-cylindric guard plate A plurality of spaced cams 51 is fixed upon the shaft 58 as by the keys 58 and interposed between said cams is a plurality of annular sec tions 59 loosely journaled upon the shaft 50 and tied together by a plurality of longitudinally disposed tie-bolts 60.

The peripheral portions of the sections 59 exing end of the strip l8 therebetween when the drum is rotated in the direction of the arrow shown in Fig. 4.

llhe inner face of each latch member 62 is provided with a longitudinal concavity 64 adapted to be engaged by the cam lug 65 upon the cor-' responding cam 51.

A pair of pivoted guiding arms 66 and 61 is carried upon the housings II and extend above and below the strip ill to a point adjacent the circumference of the drum of the recoiler.

The lower arm 61 may be of a width substantially equal to the length of the drum while the upper arm 66, as best shown in Figure 1, may, preferably, be considerably narrower so as not to interfere with the cylindric shield 56.

The arms 66 and 61 are fixed upon shafts 68 and 69, respectively, journaled in suitable bearing blocks 10 mounted upon the housings II and pinions 1| and 12 are fixed upon the ends of shafts 68 and 69, respectively, and meshed with each other whereby the arms may be swung toward or from each other in unison so that the rollers 66a and 61a may rest upon the coil.

For the purpose of controlling the movementand position of the arms, a fluid cylinder 13 may be provided. This cylinder may have its lower or inner end pivotally connected as at 14 to a bracket 15 mounted between the housings H, the plunger 16 and cylinder being pivotally connected as at 11 to the lower arm 61.

For the purpose of placing tension upon the drum, when desired, brake mechanism is provided comprising a brake drum 18 formed at the inner end portion of the drum upon the innermost section 59, a brake band 19 surrounding said brake drum, one end ofthe brake band being connected to one of the bolts 53 while the other end is connected through a tension spring 89 to the rod 8|, which is pivotally connected at its lower end as at 82 to one end of a lever 83 fulcrumed intermediate its ends as at 84 upon a bracket 85, the other end of the lever being pivotally connected as at 86 to the plunger 81 of a fluid operated cylinder 89.

A platform is provided for receiving the coil from the drum of the recoiler, and may be in the form of a tilting cradle\89, having the de- Pending arms 90 pivoted as at 9| upon the sliding platform 92 provided-with the horizontal flanges 93 slidable within the guideways 94 formed in the base 95.

A fluid cylinder 96 may be mounted at the forward end of said base and provided with a Plunger 91 connected to the sliding platform 92.

An inclined fluid cylinder 98 may be mounted as upon the bracket 99 at one side. of the base and at a point beyond-the drum, the plunger I 08 of said cylinder being provided at its upper end with'a roller lni. adapted to engage the I03 to guide the coil downward upon the platform and onto the stop I04, which is pivoted intermediate its ends as at I05 to the frame I06 and provided with the depending rocker arm I01, which may be pivotally connected, as at I08, to the plunger I09 to the fluid cylinder H or other mechanism for swinging said rocker arm upon the pivot I05.

In order to compensate for the oscillating movement of the rocker arm I01, the cylinder I I0 may be journaled as at III in brackets II2 mounted upon the supporting frame I I3.

The coil loading mechanism includes the inclined rails H4, at which point a mandrel II5 may be inserted into each coil, the mandrel being supported upon the rails I I4 and in turn supporting the coil thereon, as illustrated and described in detail in the prior patents above referred to.

In order to facilitate the insertion of the mandrel Within the coil, a portion of one of the inclined rails II4 may be hinged as indicated at 4a and adapted to be swung outward upon the hinge I I4b, providing sufficient clearance to place the mandrel in position through the coil, as disclosed in said Shoemaker Patent No. 2,120,843.

The loading or charging mechanism includes a rocker shaft II6 journaled in suitable bearings I I! mounted upon the foundation of the machine and provided with the charging arms II8 having the forked outer ends II9, any suitable means being provided for oscillating the shaft IIG as disclosed in detail in the prior patents above mentioned.

Stop levers I may be fulcrumed intermediate their ends as at I2I upon the inclined rails H4 and provided with upwardly disposed stop lugs I22 adapted to be normally held in the path of the mandrel II5 as by a coil spring I23 so as to hold the mandrel with the coil supported thereon at this point until the charging arms II8 are moved to the loading position shown in Fig. 7 when the forward ends of the levers I20 are depressed by the charging arms is indicated in said figure, moving the stop lugs I22 below the top edges of the inclined rails I I4.

In the operation of the machine, to coil a strip of sheet steel or the like, the cylinded 24 is operated in a direction to cause the rack bar plunger 25 thereof to rotate shaft 22 clockwise so as to swing the segmental rack brackets I8 in a counterclockwise direction so that the braking rollers II carried thereby will be spaced above and below the path of the incoming strip.

The cylinder 36 is operated to move the lower movable feed roller I4 upward into operative position relative to the upper roller I4. The hand wheel 46 is operated toproperly position the upper movable leveling roller relative to the lower leveling rollers 31, the cylinder I3 is operated tomove the guiding arms 66 and 61 substantially to the position shown in Fig. 4, and the cylinder 88 is operated to apply the brake band I9 around the brake drum I8 so as to hold the drum sections 59 against rotation.

The strip I0 is then fed forward in the direction of the arrow shown in Fig. 4, over the roller I2 between the edging rollers I3 and into the pinch of the feed rollers I4, the strip being carried forwardly between the braking rollers II through the leveling rolls 3I38 between the guiding arms 06 and 61 and the leading end of the strip is fed into the recesses SI of the drum sections 59. l"

At this point the. shaft 50 of the drum is started in the direction of the arrow shown in Fig. 4, and as the drum sections 59 are held against rotation, the rotation of the shaft in this direction will move with it the cam members 57, the cam lugs 85 thereof, engaging in the concavities 64 of the latch members 52 swinging the toothed or serrated ends 53 thereof upward to clamp the leading end of the strip against the surfaces 3| of the drum sections 59, as illustrated in Fig. 4.

At this point the cylinder 80 is operated to release the brake band "I9 from the brake drum I8 and the cylinder 24 is operated to swing the braking rollers I I into the position shown in Fig. 4 so as to place a tension upon the strip between said braking rollers and the drum.

As the drum continues to rotate in this direc tion, the strip will be coiled thereon until the entire strip has been formed into a coil as shown in Fig. 5.

During this operation the cylinder I3 may be operated to move the guide arms 56 and 61 out ward toward the position shown in Fig. 5, so as to accommodate the coil as it increases in diameter.

In order to back spin the coil the shaft 50 is then rotated in a clockwise direction, the loose outer end I24 of the coil is received against the stop I25 upon one of the spokes of the coil guard and as the coil is thus rotated in the opposite direction with the outer end thereof held against movement, the back spinning of the coil takes place, the laminae thereof being separated until the coil is completely back spun as shown in Fig. .6.

To remove the coil from the drum the cylinder 96 is operated, moving the cradle 89 'on which the coil is seated and with it the stripper plate I26 connected to the cradle which slides the coil longitudinally off of the drum.

The cylinder 98 may then be operated to tilt the cradle 89 to the broken line position in Fig. 4, causing the completed back spun coil, as indicated at C, to roll onto the inclined platform I02 between the side boards I03 and onto the stop member I04 from which the coil may be charged into the pickling tank indicated generally at I21 in the manner illustrated and described in detail in the prior patents above referred to.

I claim:

1. A recoiler for coiling a strip of metal and separating the convolutions of the coil, comprising a bearing, a shaft journaled at one end in the bearing, a drum mounted upon the shaft for clamping one end of a metal strip, means for rotating the drum in one direction for coiling the strip thereon, means operated by the rotation of the drum in said one direction for operating the clamping means, a housing surrounding the journaled end of the drum and fixed to said bearing, a plurality of radial spokes fixed to the housing and extending outward from the drum, a semi-cylindric guard plate carried by the spokes and spaced outwardly from the drum, means for rotating the. drum in the opposite direction to separate the convolutions of the coil, and a hooked stop at one end of the guard plate for engaging and holding the outer end of the coil from movement when the drum is rotated in said opposite direction.

2. A recoiler for coiling a strip of metal and separating the laminae of the coil, comprising a drum, clamping means upon the drum for clamping one end of a metal strip, a substantially semi-cylindric guard plate surrounding and spaced from the upper side or the drum, means for rotating the drum in one direction for coiling the strip thereon, a stop adjacent to the drum for engaging and holding the outer end of the coil from movement, means for rotating the clamping one end of a metal strip, a substantially semi-cylindric guard plate surrounding and spaced from the upper side of the drum, means for rotating the drum in one direction for coiling the strip thereon, a stop adjacent to the drum for engaging and holding the outer end of the coil from movement, means for rotating the drum in the opposite direction to separate the laminae, of the coil, a cradle below the drum provided with an arcuate platform having the same radius and center as the guard plate for receiving the coil when the laminae are separated, means for removing the coil from the drum and simultaneously moving the cradle beyond the drum, and means for tilting the cradle V ing the drum in the opposite direction to separate the laminae of the coil, a cradle below the drum provided with an arcuate platform having the same radius and center as the guard plate for receiving the coil when the laminae are separated, a stripper plate carried by the cradle, and means for moving the cradle beyond the drum to remove the coil from the drum and deposit the coil upon the cradle.

5. A recoiler for coiling a strip of metal and separating the convolutions of the coil comprising a drum, clamping means upon the drum for clamping one end of a metal strip, means for rotating the drum in one direction for coiling the strip thereon, a pair of guide arms between .arms as the coil increases in diameter, said separating means comprising meshing gears connected to the pivotal ends of the arms, a fluid cylinder and a plunger in the cylinder connected to one arm.

6. A recoiler for coiling a strip of metal and separating the laminae of the coil, comprising a drum, clamping means upon the drum for clamping one end of a metal strip, means for rotating the drum in one direction for coiling the strip thereon, a pair of guide arms between which the strip is fed to the drum, said guide arms being pivoted on opposite sides of the path of the strip at points spaced from the drum rollers upon the ends of the arms, arranged for contact with the periphery of the coil and means for separating said arms as the coil increases in diameter so that the rollers will contact the circumference of the coil, saidseparating means including meshing pinions fixed to the pivoted ends of the arms, a fluid cylinder, and a plunger in the cylinder connected to one arm.

' AGNES J. REEVES GREER.

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