US3432076A - Roll stop for a roll deck - Google Patents

Description

March 11, 1969 J. H. ARSENAULT v 3, 32,076

ROLL STOP FOR A ROLL DECK Filed May 18, 1967 Sheet of 2 Jamesffflrdena 225i March 11, 1969 J. H. ARSENAULT 3,432,076

ROLL STOP FOR A ROLL DECK Filed May 18, 1967 Sheet 3 of 2 United States Patent 2 Claims ABSTRACT OF THE DISCLOSURE A roll stop including two movable, retractible, stop members, the main one of which stops the entire line of rolls and the other or auxiliary stop being mounted on but relatively movable with respect to the main stop member and is arranged to stop the second roll and the rolls thereafter upon retraction of the first stop to release the first roll; wherein the two stop members are relatively movable but operate together and are connected by a spring so that the auxiliary member operates with any size of roll, being depressible by a large roll but springing up to accomplish its auxiliary stopping action due to the spring immediately the large roll has moved from its stopped position.

This invention relates to a new and improved stop for rolls as on a roll deck, and the principal object of the invention resides in the provision of a construction which will operate without malfunction regardless of the size of the rolls encountered, so that the same mechanism without change can be used for a deck processing relatively large rolls, for decks processing small rolls, and for decks which may encounter rolls of varying diameters.

Another object of the invention resides in the provision of a roll stop mechanism comprising a main stop element and an auxiliary pawl movably mounted with relation thereto, together with means for moving the main stop element between a position stopping a line of rolls and a position releasing a roll, wherein the auxiliary pawl is moved into a position stopping the second and subsequent rolls at the same time that the main stop is retracted releasing the first roll in the line; and the provision of a device of the class described wherein the auxiliary pawl is mounted relative to the main stop member and is connected thereto by resilient means so that as the auxiliary pawl is moved into roll stopping position, it is depressible momentarily if the roll being released is of relatively large diameter. As soon as the released roll has gone down the ramp, the auxiliary pawl is then urged upwardly through the surface of the deck in roll stopping position by means of the resilient connection, whereby rolls of substantially any diameter can be conveniently processed.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which:

FIG. 1 is a view in side elevation illustrating the invention and shawing the main roll stopping element in roll stopping position and the auxiliary pawl in retracted inoperative position;

FIG. 2 is a plan view of the apparatus shown in FIG.

FIG. 3 is a view similar to FIG. 1 on a larger scale illustrating the main stop in retracted position to release the first roll, and illustrating in solid and dotted lines the action of the auxiliary pawl under influence of such roll, and

FIG. 4 is a view similar to 'FIG. 3 illustrating the action with relation to a roll having a diameter larger than the rolls being processed with reference to FIG. 3.

3,432,076 Patented Mar. 11, 1969 In the drawing, the reference numeral 10 indicates a ramp or roll deck of any convenient kind and adapted for any convenient mechanism. This deck serves as a magazine for a series of rolls as at 12, 14, 16, etc., these rolls being held in position as in FIG. 1 until such time as the first roll, i.e., as at 12, is desired to be released to roll down the ramp to some other processing machinery not disclosed.

Under the deck there is in this case provided a power operated means e.g. a power cylinder 18 which is provided with a rectilinearly power operated device e.g. piston rod 20. A powerful solenoid could of course be used instead or any other power means desired. The power operated element 20' is connected as by a bracket 22 to a cross shaft 24 extending across the deck and having connected thereto at the ends thereof a pair of levers 26, 26, these being pivoted at their opposite ends as for instance on rod 28 to brackets 30- mounted anywhere desired. The power device 18 itself may also be properly mounted on a pivot arrangement at 32 on a bracket 34- in order to operate freely.

Proper controls are provided with respect to the power device .18 to cause it to operate under the control of an operator or in some cases by automatic machinery at the required interval when the roll 12 is desired to be released.

Also pivotally mounted with respect to shaft 24 there are main roll stop members A. Roll stop members are free-ended and mounted on the framework 10 to pivot thereon as by pins or the like 36 operating in slots 38 in the roll stop members. There is one of these main stop members at each side of the machine as clearly shown in FIG. 2. It will be seen that as the power device .18 is operated, it will tend to move the levers 26, 26 in a counterclockwise direction, thus moving the main stop members A, A in a clockwise direction, the slot 38 providing for lost-motion. Retraction of the power device 18 will cause the parts to move back again to the FIG. 1 position where the operative ends of the main stop roll members A, A are in roll-stopping position.

Pivotally mounted on each of the main roll stop members A, A is an auxiliary stop pawl B. These pawls are located substantially normal with respect to the respective main roll stop member A, and each is so held by means of a resilient device such as a spring indicated at 40. If pressure is applied to the free end of the auxiliary stop pawl B in a counterclockwise direction, the free ends of the members A and B will separate.

Assuming the parts to be located in the FIG. 1 position with the main stop members A, A holding the line of rolls 12, 14, 16, etc., on the ramp, and it is desired to release one roll only, i.e., that at 12, it is only necessary for the operator, or automatic controls, to operate the power device 18 to tend to move the levers 26 from the FIG. 1 position to the position shown in FIGS. 3 and 4 wherein the main roll stop elements A, A are retracted and the initial roll, i.e., 12, is then released.

At the same time however it will be seen that the auxiliary roll stopping pawl B extends upwardly to the left in a position to intercept roll 14 and the rest of the rolls thereafter, thus holding the same in position until the main roll stop members A, A can once more be moved into the position shown in FIG. 1. This action is a sort of transfer action, the line of rolls being stopped initially by auxiliary stop paws and then being finally stopped by the main roll stop members A.

Now in FIG. 1, if the rolls have a small diameter relative to the stopping members as shown in FIG. 1, there is no need for any relative motion between stop members A and B. The pawl B will merely rise to the dotted line position in FIG. 3, the initial roll having left this area, to move down the ramp. On the other hand however, supposing the rolls to be enlarged with respect thereto as shown in FIG. 4, the free end of the auxiliary stop pawl B would come up into engagement with the surface of the roll at the lower side thereof and this would therefore stop the operation of the entire mechanism except for the fact that the auxiliary stop pawl B is resiliently mounted and will move counterclockwise about its pivot point on the respective main stop member A. This is shown in solid lines in FIG. 3 and in dotted lines in FIG. 4. Thus there is no interference with the action due to the large roll which cannot move down the ramp out of the way fast enough. Thus the large roll does not interfere with the action of the stop members and as soon as the roll has proceeded far enough to leave auxiliary stop pawl B, the spring will insure that the stop pawl is projected sufficient- 1y beyond the surface of the roll deck to stop the second roll, i.e., the roll 14 and those behind it.

In order to return the parts to the original position, any kind of reversal mechanism can be utilized and in this case it is done by providing a microswitch 42 mounted on framework which is engaged by the main stop member A in its lowermost position to energize means to cause the power operated device 18 to move in the opposite direction and retract the parts to the FIG. 1 position. During this action the stopping action is transferred from auxiliary stop pawl B to the main stop member A once more and the rolls move down from the stop position of auxiliary pawl B as indicated at 46 in FIG. 3 to the position of the rolls shown in FIG. 1.

Therefore it wil be seen that the same mechanism can be used to process rolls of any diameter within a reasonable range. A series of rolls of varied diameters can be processed as well as a series of relatively smaller rolls or a series of relatively larger rolls.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. Roll stopping mechanism for an inclined roll deck comprising a movable main stop member having an end projectable relative to the surface of the roll deck to stop a series of rolls thereon, said main stop member being movable to a retracted position to release the first roll in the series, and means for moving the main roll stop member between roll stopping and releasing positions,

an auxiliary stop pawl pivotally mounted on the main stop member intermediate the ends of the latter, and being spaced upwardly on the inclined deck from the main stop member, said stop pawl being movable between a normal retracted position of the main stop member, the main stop member moving the auxiliary stop pawl, said stop pawl being operative to stop said second roll and the remainder of the series of rolls during the period of retraction of the main stop member to release the first roll,

means returning the main stop member and the auxiliary stop pawl to their original positions wherein the second roll and rolls thereafter in series move past the stop pawl to a position wherein they are stopped by said main stop member,

and yieldable means normally holding the auxiliary stop pawl in its roll stopping position, said auxiliary stop pawl thereby being depressible by a roll released by the main stop member but still in the path of the auxiliary stop pawl, the auxiliary stop pawl being pivotable relative to the main stop member and normally held in predetermined roll-stopping position relative thereto by said yieldable means, said stop pawl being otherwise unconstrained.

2. A roll stopping mechanism for an inclined roll deck for a series of rolls thereon, the rolls moving down the deck by gravity, means for stopping the line of rolls, said means comprising a main stop member pivotally and slidably associated with respect to said deck and having a free end portion normally projecting beyond the surface of the deck in a position to stop the line of rolls,

means to pivot and slide said main stop member to retract the same within the deck to allow the line of rolls to proceed down the inclined ramp,

an auxiliary stop pawl pivotally mounted on the main stop member, means yieldably holding the pawl relative to the main stop member in a position to project a portion of the auxiliary stop pawl beyond the surface of the deck to stop the second roll simultaneously with retraction of the main stopping member to release the first roll, whereby but a single roll is allowed to proceed down the ramp, the yielding means connecting the main stop member and the auxiliary stop pawl normally holding the auxiliary stop pawl and the main stop member in predetermined relationship and allowing yielding of the auxiliary stop pawl under influence of the roll being released in the event that the latter fails to move fast enough from its position so that it would interfere with the motion of the auxiliary stop pawl in being projected through the surface of the deck to stop the second roll, said yielding means however causing said auxiliary stop pawl to come into its operative stopping position as soon as the first roll has moved out of contact therewith.

References Cited UNITED STATES PATENTS 10/1941 Rosan 22l295 XR 2/1965 Clark 2141 U.S. Cl. X.R 2l41

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