US2129618A - Web supply mechanism for printing machines - Google Patents

Description

Sept. 6, 1938. A. J. HORTON WEB SUPPLY MECHANISM FOR PRINTING MACHINES Filed Oct. 11, 1935 2 Sheets-Sheet 1 Sept. 6, 1938.

A. J. HORTON 2,129,618

Patented Sept. 6, 1938 UNITED STATES PATENT OFFICE WEB SUPPLY MECHANISM FOR PRINTING MACHINES Albert J. Horton, White Plains, N. Y., assignor to R. Hoe & 00., Inc., New York, N. Y., a corporation of New York Application October 11, '1935, Serial No. 94,485

19 Claims.

This invention relates to a web supply mechanism for a machine operating upon a web wherein provision is made for changing the web feed from a spent roll to a full roll by joining the web .of one to the web of the other without decelerat-- should be constant for all diameters of rolls, when the replacement mechanism is in a preparatory position to make the join, in order to provide a constant distance to be traversed by the web deflecting or pasting brush commonly used to deflect the running web toward, and press it against the web of the replacement roll, thus insuring uniform operation in all instances, and that a proper join be made. This invention contem plates the obtainment of this desideratum by providing mechanism whereby the rotation of the roll carrier or reel is positively stopped at a predetermined point in its roll positioning movements, and an initial web deflector and a pasting brush are allowed a variable initial movement toward the replacement roll to compensate-for differences in diameters of such rolls.

One object of this invention is to provide automatically operable means to interrupt the roll positioning movement of a roll carrier or reel at a determined point for all diameters of rolls, and to vary the preparatory web joining position of the web deflecting and severing means, whereby the running web and the replacement roll will be spaced apart the desired amount regardless of the diameter of the roll.

Another object is to provide a mechanism opa variably positionable stop, operable to limit the movement of said web deflecting mechanism into pre-joining' position.

It is alsoan object of the invention to provide a running web positioning'device for a web supply mechanism, of generally improved construction, whereby the device will be simple, durable and inexpensive in construction, as well as convenient, practical, serviceable and eillcient in its With the foregoing and other objects in view,

which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed, it being understood that various changes in the precise embodiment of the invention herein dis closed may be made within the scope of what is claimed without departing from the spirit of the invention,

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a fragmentary elevational view of a web supply and joining mechanism, in prejoin position, and showing a web deflector position controlling mechanism, embodying the features of this invention;

Figure 2 is a face elevational view of the'mechanism controlling the position of the web joining mechanism, looking in the direction of arrows 22 of Figure 1;

Figure 3 is an illustration of a somewhat modifled formof the mechanism;

Figure 4 illustrates a modified form of the mechanism somewhat similar to that shown in Figure 1;

Figure'5 illustrates another form of such mechanism; and

Figure 6 illustrates still another form.

The web supply and joining mechanism illustrated in Figures 1 and 2 includes a web roll supporting reel I! mounted on a suitable shaft journaled in and between suitable supports l2,

and has arms l3, l4 and I5 extending radially therefrom, upon which web rolls are rotatably supported in accordance with the present general practice. In this instance the arm l3 supports an expiring web roll l6, the running web ll of which, is shown directed toward and into a machine adapted to operate upon a web, such as a printing machine (not shown), and the arm I! supports a replacement roll l8, having a web end with adhesive applied thereon, positioned to have its web joined to the running web II. It will be understood that, as is usual, the reel II is rotated by suitable means, such as an electric motor (not shown), in the direction indicated by the arrow in Figure 1, to position the web rolls into the positions illustrated, the arm l5 being, in this instance, positioned to receive another replacement roll l9 when the same is required.

When the replacement roll I8 is disposed in the position shown, that is, inthe web joining position, it is rotated, before the join is made, to bring it up to the speed of the running web, by

suitable means, herein constituted by the driven belt 2|, which engages the roll |3 upon an upper portion of the peripheral surface thereof. I'he belt 2| is guided about pulleys 22, 23, 24 and tensioned by a spring 25 acting upon the belt 2| through a lever 23 and the pulley 24. The pulley 22 is supported upon the shaft 21 journaled in the brackets 23, which are disposed one at either side of the machine, and secured to an adjacent machine frame member 23.

A web severing device is provided, which consists of a pair of swingably mounted arms, one of which is shown at 3 I, each pivotally mounted on a supporting bracket 32, also secured to the frame portion 23, and may have as herein shown, an automatically operable web severing blade 33, with its holder 34 mounted upon theh lower ends. The holder 34 constitutes an initial or first web deflector adapted to be moved with the blade 33 into a web engaging and preparatory web joining position as illustrated, and during such movement to engage the running web I! to initially deflect and to position it relatively to the replacement roll for the subsequent web joining operation. A spring 33 is provided to maintain the arms 3| both in the position shown and in the inoperative position which is indicated in dotted lines in Figure 1.

A second web deflecting member, herein constituted by a pasting brush 35, is, mounted on a pair of arms 35, which are also swingably mounted upon the brackets 32, to be swung toward the replacement roll l8, to join the webs. The arms 33 and the arms 3| are releasably held together by a catch'member 31, which is automatically released to permit web joining movement of arm 33 from the preparatory position illustrated, by means of an electrically operated catch release device 33. It will be understood that the arms 3| and 36 are initially moved in unison into the preparatory position illustrated, by manual or other suitable means, after the replacement roll is brought to web splicing position, and that the arm 36, when released by the catch 31, may be further moved manually or by the spring 33, to deflect the web I! toward and into contact with roll |3 at the moment the adhesive covered end of the web, on this roil',is in position to be joined to the web 11.

Herein the spring 33 is shown connected to the arm 35 and through the catch member 31 acts on the arms 3| as above described.

The rotation of reel relatively to the supports |2 may be accomplished by electrically operated means (not shown), that is stopped by a switch mechanism 33 conveniently mounted upon the support II, in position to be operated by engagement of a finger 4|, with one of the lugs 42, positioned on a collar on the shaft of the reel II. It will be understood that the rotation of reel II is thus stopped to dispose the replacement roll l3, in all instances, at the same position.

In similar mechanisms used heretofore, it has been the practice to provide a flxed stop for the arm 3|, to limit its movement toward the replacementroll, and when the replacement rolls have varied in diameter, the variable space bea tween the surface of the same and the running always locates the axis of replacement roll II in the same position, and a mechanism is provided devices at the proper distance from the axis of the roll l3 and thus controls the space between the surface of this roll and the running web i'l, so as to compensate for variation in roll diameters.

One form of mechanism; providing a variable stop for the web deflecting and cutting mechanism, is herein shown in Figures 1 and 2 as including slidable wedge shaped stop members 45, disposed in the path of studs 43, secured to the arms 3| of the web deflecting and severing device. The stop members 45 are slidably supported on extensions 43 of the brackets 23, so as to present beveled surfaces 41 in various positions, to the end of the studs 43, and thus vary the swinging movement of arms 3| toward the replacement roll I3. One surface of each of the stop members 45 is provided with rack teeth 43, which are in mesh with the teeth of a gear segment pivoted to the extension 43, by being secured upon a'shaft ,52 iournaled in said extension. A short lever 53 is secured upon the shaft 52, and is connected to another short lever 54, by a link 55. The lever 54 is secured upon a shaft 56 which extends between and is Journaled in brackets 23. An arm i'l, secured to the shaft 55, supports a short shaft 53, upon which is rotatably mounted a roller or follower 53, herein shown disposed to engage and ride on the inner surface of the belt 2|, opposite its contact with the surface of the roll l3 and, preferably, with its axis approximately in alignment with the axes of the reel II and the roll l3 when the latter is in the web joining position. A spring 53 is provided to be made, to have the follower 53 engage the roll 5 I3 directly upon its surface, instead of the belt 2|, if desired, but the arrangement herein shown is most convenient in association with the particular form of web supply mechanism selected for illustrating the application of the same.

The operation of the above described automatically operating stop mechanism results in the positioning of the web deflecting and cutting device, as pointed out above. Difference in diameter of rolls l3 varies the position of the roller 53 and thus rocks the arm 51, and through the shaft 53 rocks the lever 54. Through the link 55, the lever 53, and the shaft 52, the gear segment 5| is caused to rock, and the member is slidably moved to dispose its beveled surface 41 in position to have a point thereon engaged by the stud 43, and thus variably limit the swinging movement permitted the arm 3|, and hence Position the web deflecting and cutting device insuch relation to the roll l3 that the space between the surface of this roll and the running web is always substantially the same.'

From the above it will be obvious that should the roll l3 be of smaller diameter than the one illustrated, the member 45 will be lowered thus permitting thearm 3| to swing clooer to theaxis of the roll l3 andvthe arm 14, and should the roll |3 be of larger diameter than tint shown, the arm will be stopped at a position farther from theaxis of the roll l3 and the arm i4, thus providing for a constant and uniform amount of movement of initial web deflector or holder 34 and the brush 35 toward the roll l3 when it is moved preparatory to deflecting the web IT into contact with the roll. The combination, the gear segment 5| and the rack teeth 43 on member 45 provide mechanism for the above purpose whereby pressure applied on the arm 3| will not be transmitted back through the several levers and associated parts, to the roller 59 and hence to the roll l8.

In the form of mechanism shown in Figure 3 the gear segment 5| and the member 48 are omitted and a swingable stop member 8| is pro vided. The member 8| is pivotally secured at 82, to the bracket 68, upon which the web deflecting and severing device. and the pasting brush 65 are pivotally supported. A lug 88 formed on the stop member 8| is moved by the follower 59 through lever 54 and link 55, to a position to be engaged by a lug 81 extending from the arm 88 ofthe web deflecting and severing device to limit the movement thereof.

Variation in the position of the member 6| varies the movement permitted to arm 58 and is controlled by differences in the diameter of rolls 8. A spring 68 maintains the follower 59 in operative engagement with the belt 2|. The reel is stopped in a predetermined position by operation of the rotation controlling switch 89 as in.

the previously described form shown in Figures 1 and 2, and the web deflecting brush 65 and the arm 68 are likewise joinedtogether by the catch 31, releasable at the proper time to permit deflection of the running web IT of the expiring web roll l5, by the electrically operable means 38.

In the mechanism shown in Figure 4 the stop member 1| is slidably mounted upon an extension I2 of a belt roll supporting bracket 13. The roller or follower 59, in this instance, slides the member through a lever 14, a shaft 15, a lever 16 and a link 11. A spring 18 maintains the follower 59 in engagement withthe belt and through it, with the roll l8. Differences in the diameter of rolls 8 will slide the stop member causing variations in the movements of arm 3|, of the web deflecting and severing device, due to the cooperation between the stud 46 and a beveled surface 19 of the member II.

In the form shown in Figure 5, the follower 59, through a lever 8|, and a shaft 82, swings a lever 83 to vary the position of a stop member 84, formed thereon, relatively to an arm 85, extending from the arm 3| of the web deflecting and severing device. The arm 85 has a lug 88, formed upon its end for engagement with a beveled surface 81, of the stop member 84. Swinging movement of the stop member 84 by the follower 59, positions the surface 8'! of the member 84, to limit the movement of the web deflecting and severing device toward roll l8. A spring 88 maintains the follower 59 in position to be moved by diifer ences in diameter of rolls l8.

In Figure 6, is illustrated a form of mechanism wherein the stop member is in the form of a stud 9| extending outwardly from a slide 99, which is mounted upon the bracket 82 and is slidable thereon in the path of an extension 94 of the arm 3|, of the web deflecting and severing device. A beveled surface 95,. formed on the extension 94, cooperates with the stud 9| to limit the movement of the web deflecting-and severing device toward roll l8. The stud 9| ,is moved by the follower 59, through a lever 95, a shaft 91, and a lever 98. A spring 99 maintains the follower 59 in engagement with belt 2|, to be moved by differences in the diameter of the rolls H, to

.dispose the stud 9| in the proper position.

It will be understood that the invention may be embodied in other specific forms without departingi'rom the spirit or essential attributes thereof, and it is therefore desired that the present embodimentsbe considered in all respects as illustrative and not restrictive, reference being had to the claims rather than to the foregoing description to indicate the scope of the inven-' 'tion.

What I claim is:

1. In a web supply mechanism for a machine operating upon a web, a rotatable reel for moving a replacementroll into web joining position and, to dispose the replacement roll in a predetermined position, web joining mechanism having an initial web deflecting member adapted to deflect a running web toward the replacement roll, and means to control the web deflecting action of said member and actuated by the replacement roll to insure the required amount of web deflection to position the web a determined dis--' tance from said roll.

3. In combination in a web supply mechanism, means toposition a replacement roll adjacent a web running from an expiring web roll, means to I initially deflect the running web toward the replacement roll, and control means to limit the amount of deflecting movement of said deflecting means to insure substantially the same spacing between the replacement roll and the adjacent running. web, when replacement rolls of different diameters are used.

4. In a web supply mechanism, means to position a replacement roll adjacent the running web of an expiring web roll, web deflecting and severing means movable into engagement with the l running web, means to rotate the replacement roll, including a driven belt in contact with the surface of the roll, means to vary the web engaging position of said web deflecting and severing means, and means disposed opposite the point of contact of said driven belt with the replacement roll, and in contact with said belt to actuate said position varying means.

5. In a web supply mechanism, rotatably mounted means to position a replacement roll adjacent the running web of an expiring web roll, means to rotatably support a replacement roll on said first means, web deflecting and severing means movable into engagement with the running web, means to vary the web engaging position of said web deflecting and severing means, and means positioned in alignment with the axis of said replacement roll positioning means and said replacement roll supporting means, to actuate said position varying means.

6. In a web supply mechanism, a device for supporting and positioning a replacement roll adjacent the running web of an expiring web roll, a web deflecting and severing device movable into engagement with the running web, and mechanism to vary the web engaging position of said web deflecting and severing device, includdevice, through said position varying mechanism to the replacement roll.

'7. In combination, means to dispose a replacement roll in position adjacent a running web, a movable member for supporting a device. adapted to join a running web to the web of the replacement roll, mechanism including a swingable member, a stop member movable by said swingable member into the path of the movement of said movable supporting member, means operable by variations in the diameter of the replacement roll to move said swingable member, and means on said movable supporting member engageable with said stop member.

8. In a web supply mechanism for a machine operating upon a web, mechanism for disposing a replacement roll in a determined web joining position, web deflecting means mounted for movement toward the replacement roll, and cooperating means including a member movable by the replacement roll and a member movable with said web deflecting means, to variably limit the movement of said web deflecting meanstoward said replacement roll. i

9. In a web supply mechanism, means for supporting a web roll from which a web is running freely to a machine, means for supporting a replacement web roll near the web, a web splicing mechanism movable to guide the web at a desired distance from the replacement roll and closer than it runs freely, and means governed by the radial dimension of the replacement roll to determine the position to which the splicing mechanism is moved.

l0. Ina web supply mechanism, a rotatable support for a replacement web roll adapted to move the replacement roll toward a web running freely from an expiring web roll, and to locate the axis of the replacement roll at a predetermined position, a web splicing mechanism movable to guide the running web at a desired dis-. tance from the replacement roll and closer than it runs freely, and means responsive to the radius of the replacement roll to determine the position to which the web splicing mechanism is moved.

11. In a web supply mechanism, means for supporting a web roll from which a web is running freely to a machine, means for supporting a replacement roll near the web, a web splicing mechanism movable to guide the web at a desired distance from the replacement roll and closer than it runs freely, a pivoted member biased toward the axis m: the replacement roll.

and variably positioned in conformity with the radius of the replacement roll, when said replacement roll is moved into web joining position, and

means controlledby the pivoted member to deterthe axis of the replacement roll and variably positioned in conformity with the radius of the replacement roll when said replacement roll is moved into web joining position, and means controlled by the pivoted member to determine the position to which the-web splicing mechanism is moved.

13. In a web supply mechanism, means to dispose a replacement roll with its axis in a determined position, a first movable means to initially deflect a running web to a position adjacent to and spaced from the periphery of the replacement roll, a second movable means to deflect the web into engagement with the roll, said second movable means being connected to said first movable means to be initially moved therewith and being releasable therefrom for further movement, and means to vary the amount of movement of the initial web deflecting means to insure substantially equal spacing between the running web and the peripheries of replacement rolls of different diameters whereby in all instances the amount of movement of said second web deflecting means will be constant.

14. In a web supply mechanism, means to dispose a replacement roll with its axis in a determined position, movable means to deflect a running web to a position adjacent to and spaced from the periphery of the replacement roll, and means actuated by the replacement roll to control the amount of movement of said web deflecting means to insure substantially equal spacing between the running web and the peripheries of replacement rolls of diiferent diameters.

15. In a web supply mechanism, means to support a replacement roll with -its axis in a determined position, movable means to deflect a running web toward the periphery of the replacement roll, and means cooperating with the deflecting means and variably positioned automatically in dependence on the diameter of the replacement roll, to determine the amount of deflection of the running web by the deflecting means.

16. In a web supply mechanism, means to support one of a plurality of replacement rolls varying in diameter, with its axis in a determined position, movable means to deflect a running web toward the periphery of the replacement roll, and means positioned in accordance with the diameter of and by the replacement roll, to vary the web deflecting movement of the web deflecting means.

17. In a web vsupply mechanism, a rotatable support adapted to position a replacement roll adjacent a running web of an expiring web roll, an initial web deflecting member movable into engagement with the running web to deflect the same toward the replacement roll, and a stop positioned to be engaged by said deflecting member when it. is moved, to limit the movement thereof, said stop being adjustable in accordance with the diameter of the replacement roll to vary the position of said web with respect to the roll when the web is deflected by the web deflecting member.

18. In a web supply mechanism arranged to feed webs from rolls that may vary substantially in diametena reel adapted to support a plurality of web replacement rolls and to dispose the rolls successively in a predetermined position in respect to a running web, a movable part having a web engaging position and adapted to engage the running web and deflect it toward the positioned replacement roll, a stop member positioned to be engaged by said part when it is moved, and mechanism influenced by the diameter of the replacement roll to position the stop member to insure sufficient deflection of the running web by the web engaging portion of said part when it is moved, to space the web a determined amount from the replacement roll.

19. In a web supply mechanism, a reel operable to position a replacement roll in a predetermined position, a first swingable arm having a web engaging member adjacent its free end, a

second swingable arm having a; web engaging member adjacent it's free end, a stop member positioned to be engaged by one of said swingable arms to limit its swinging movement toward the replacement roll on said reel, and a 10 lever arm influenced by the diameter of the replacement roll to position said stop member to engage and stop the swinging movement of the respective arm when the web engaging member on this arm is in a desired spaced relation with respect to the replacement roll, to insure the same amount of further swinging movement of the arm not engaged by said stop toward the replacement roll when replacement rolls of different diameters are mounted on said reel.

ALBERT J. HORTON.

Images