US2110976A

US2110976A - Method and means for renewing web rolls in a printing machine

Info

Publication number: US2110976A
Application number: US35061A
Authority: US
Inventors: Albert J Horton
Original assignee: R Hoe and Co Inc
Current assignee: R Hoe and Co Inc
Priority date: 1935-08-07
Filing date: 1935-08-07
Publication date: 1938-03-15
Anticipated expiration: 1955-03-15

Description

March 15, 1938. A. J. HORTON 2,110,976

METHOD AND MEANS FOR RENEWING WEB ROLLS IN A PRINTING MACHINE Filed Aug. 7, 1935 2 Sheets-Sheet l INVENTOR.

March 15, 1938. A, J HQRTQN 2,110,976

METHOD AND MEANS FOR RENEWING WEB ROLLS IN A PRINTING MACHINE Filed Aug. 7, 1935 2 Sheets-Sheet 2 INVENTOR Patented Mar. 15, 1938 METHOD AND MEANS FOR RENEWING WEB ROLLS IN A PRINTING MACHINE Albert J. Horton, White Plains, N. Y., assignor to R. Hoe & 00., Inc., New York, N. Y., a corporation of New York Application August 7, 1935, Serial No. 35,061

16 Claims.

This invention relates to the means and procedure, used during the operation of a full speed roll changing mechanism for printing machines, and more particularly to means for and method of preparing a replacement roll for joining its web to the running web of an expiring web roll, and of holding the end of the web of the replacement roll against the body thereof in such a manner, that it will readily release itself at the time 1 the join is made.

Before joining the web of a web replacement roll with the web of an expiring web-roll, ad hesive is applied to the leading end of the web of the replacement roll, upon its outer surface and the roll is then rotated up to the speed of the running web. The roll and running web are then moved relatively to each other, into contact, to

cause the adhesive covered portion of the replacement roll to adhere to the running web of the expiring roll, which latter web is then severed and the new web is drawn into the printing machine.

Various'means and mechanisms have been suggested and used for holding the free end of the web of the replacement roll closely thereto while itis being brought up to the speed of the running web and before it is joined thereto. All of these have contemplated the provision of means to cause a quick release of the aforesaid free web end at the moment the web join is made, so as not to unduly strain the respective webs or cause interruption in the machine operation. Among these means, is the provision of so called gummed tabs for securing the free end of the web to the roll body by having a portion thereof adhering to both the free end and the body and tearing or otherwise separating, when the join is being made. Some forms of these tabs have been provided with weakened portions to facilitate the separation thereof, while others are arranged in such a manner as to readily rupture upon having a strain imposed thereon, such as occurs when lifting the free web end from the roll body. These tabs are of a particular form which require care 4 in handling and in their proper application. The

weakened form of tab has been found to be especially difiicult to apply properly, without tearing it at the time of application and difliculty has been experienced due to their separating before the join is made and prematurely releasing the web.

Another form of web end holding means requires the weakening of the web portion between the point at which the web end is secured to the roll and the portion of the web end directly following the same. This procedure necessitates additional work and it is diflicult to avoid weakening the web excessively.

The present invention contemplates the provision of a holding means whereby no weakening 5 of the web end is required and the full strength of the web portion adjacent the securing point is retained to insure that there will be no premature parting and release the web end from the roll. 10

This invention, while using gummed slips or label like members or their equivalent in carrying out certain of the principles thereof, contemplates the use of slips or members of no particularly special form or structure, a short piece of a gummed strip from a roll of binding paper being well suited to the purpose. Another aspect of this invention contemplates the reinforcement, by means of gummed strip material or the like, of portions of the leading end of the web of the renewal roll, whereby separation by rupture of the web itself will be facilitated at predetermined and controlled points and in the desired direction, thus freeing this leading web end from the roll when the join is made. 25

One of the principal objects of the invention is to provide means for securely holding the end of the web of the replacement web roll against the body thereof, while the replacement roll is being handled and rotated in preparation for having the web thereon joined to the web of an expiring web roll.

Another object is to provide a method of holding and of permitting a quick release of the leading end of the-web of a replacement web roll, when it is joined to the running web of an expiring web roll.

Still another object is to provide means of comparatively simple and inexpensive form and 40 structure, to secure the web of a replacement web roll to the body thereof, which will insure substantially instant release thereof when a join is made between this web and the web of an expiring web roll.

A further object is to provide an improved form for the leading end of the web of areplacement web roll in combination with means to secure the same to the roll to insure a firm connection therebetween and permit a quick release therefrom.

Preferred embodiments of the invention are 11- lustrated in the accompanying drawings, wherein:

Figure l is a diagrammatical view of a web feeding mechanism that pr v f r J i h h web of a replacement web roll to the running web of an expiring web roll, and with which the in-' vention may be employed.

Figures 2 to 8 inclusive are views of web replacement rolls, illustrating several forms and arrangements of web end securing means and of preparing the same for use in the carrying out of the principles of this invention;

Figure 2 shows web end securing means disposed at the points or apices of the salient angles of a fish-tail form of web end;

Figure 3 shows web end-securing means applied to a roll having its web end formed with a straight leading edge from which a tapered portion has been cut at each end and also at the center;

Figure 4 shows an arrangement similar to that shown in Figure 2, except that the points-of the fish-tail are disposed adjacent the ends of the roll and the web securing means is of somewhat different form;

Figure 5 shows a web end securing means disposed at the point or apex of a salient angle form of web end;

Figure 6 shows a form of releasable web end securing means somewhat similar to that shown in Figure 4, but with an additional feature provided which will be hereinafter pointed out;

Figure 7 shows an arrangement similar to that shown in Figure 2, but illustrating a somewhat modified form of .securing means and tear directing means; and I Figure 8 shows an arrangement similar to that shown in Figure 7, but having the securing means disposed at the point of a salient angle form of web end, as in Figure 5.

The non-stop web roll feeding and changing mechanism illustrated in Figure 1 comprises a roll supporting reel H rotatably mounted upon a' support l2 and adapted by means of arms l3, l4, and i5 to rotatably support web rolls and to be actuated to move them into and out of web feeding position. An expiring web roll I6 is shown supported by arm 13 with its web il running to a printing machine (not shown), the reel ilhaving been rotated to move the expiring roll l6 into the position shown, from the position at present occupied by the replacement roll is which is shown in web joining position with respect to the web i1.

A roll rotating device including a driven belt I9, is provided, to rotate the roll I! and bring it up to the speed of the running web I! before the Join between the respective webs is made. A swingable web engaging brush 2i is provided to press the running web l1 against the roll ii to cause it to be joined to the web end 22 thereof by adhesive previously disposed thereupon, and a web severing knife 22 is provided to sever the running web I! as soon as the join is made. will be understood that suitable mechanism is provided to operate the roll rotating beltlQ, the brush 2| and the knife 22 in properly timed sequence so that no interruption in the operation of the machine will be caused.

As referred to above, adhesive is disposed betweeen the web I! and the web end 22 of the replacement roll previous to making the join, and this is indicated herein as being applied upon the web end 22 in the form of a narrow strip 24. The strip of adhesive 24 follows the contour of the form of the web end, being disposed close to the edge thereof, a space being left where no adhesive is applied, as indicated at 25 to permit contact of the belt I! therewith without it ad-' hering thereto. g i

As shown in Figures 2, 4,and 6, the web end 22 is in the form of a fish-tail, the points or apices 26 of the salient angles 21 thereof, being disposed in Figure 2, spaced. inward from the ends of the roll ii. In Figures 4 and 6, the apices 26 and the side edges of the web end are adjacent the ends of the roll l8. A slip or sticker 28, comprising a short strip of gummed material is shown in Figure 2 pasted to both the web end, at the apices 26, and the next course of web material on the roll N, in such a position that one of its straight side edges 29 extends over the edge of the web end 22 forming an acute angle therewith and being substantially parallel to the adjacent side edge of the web end. In Figure 6, a disc-like sticker 3I is provided, while in Figure 4, a short piece of strip material 32 is used as a sticker to secure the leading or front end of the web to the next course thereof on the roll l8.

In all of the above forms the respective stickers are slightly spaced from the adhesive strip 24 so as to provide a strip of web material therebetween, not covered by either adhesive or any portion of the sticker. Preferably, the strip of adhesive 24 starts at a pointin close proximity with the edge of the web end adjacent its intersection with the sticker and extends angularly across the web, toward the adjacent end of the roll I 8. The purpose of the above arrangement is to insure that the separation or parting of the web will take place between the sticker and the strip of adhesive and be directed toward the adjacent end of the roll, substantially instantaneously, to separate the web end 22 from the roll when the web end is joined to the running web I! and to require that the web be parted along only a comparatively short line. The small arrows shown on the drawings adjacent the leading edge of the web end indicate the general direction in which it is torn whenseparated from the holding means.

In Figure 6, a reinforcing piece of gummed strip material 33 is secured to the underside of the web end 22, to direct the tear of the web material and more positively guide it toward the adjacent roll end. In the other forms, the natural tendency of the tear to extend toward the roll end is assisted by the reinforcement accorded this portion, by the join between the same and the running web, due to the disposition of the adhesive at an angle extending backwardly around the roll and toward the adjacent edge thereof. A short piece of strip material 34 may be secured to the centrally disposed apex of the angle of the fish-tail form of web end, to prevent possible fracture of the web at this point during the joining operation.

In Figure 3 the web end 22 is shown cut or torn to form two leadingvedges 20, the shape being somewhat similar to that which would be obtained by removing the pointed portions of the fish-- tail arrangement of Figure 2, and the center portion is shown rounded, as some operators prefer to tear it in that manner. With this form of web end, a sticker 32 is used at each comer, and the adhesive strip 24 applied preferably as shown, so as to leave a portion of the web uncovered beside and behind each sticker. It will be observed that when proportioned as shown, the web end has four side edges to each of which a tear is directed (as indicated by the adjacent small arrows), when the web end is being separated from the roll. In this instance the belt path 25 is shown in the center, but it can be left elsewhere around salient angle with a sticker 3! connecting the web end 22 to the roll it at the apex of the salient angle. The strip of adhesive It in this instance, is applied in the form of a V shape, with the sticker 85 disposed between the arms thereof, and extends from one side of the angle to the other; Reinforcing strips 31 are provided disposed beneath the web and aligned with the strip of adhesive 38 to insure parting oi the web between the sticker 35 and the adhesive 36, the lines of tear in this instance converge as indicated by the small arrows on the drawings.

Figures 7 and 8 illustrate means to releasably secure web ends to a roll without the use of strips of gummed material as the securing means. In this arrangement a spot of adhesive 38 is disposed beneath the web end 22 adjacent the apex of the salient angle form of web shown in Figure 8 and adjacent the forward points 19 of the fish-tail form of web end ll shown in Figure 'l. A reinforcing piece 42 isprovided in the form shown in Figure 8, applied beneath the web end adjacent the spot of adhesive 38. The reinforcing piece 42 has the form of a. fish-tail, the angle 43 of which straddles the adhesive spot 38 and insures parting of the web between the sides of the salient angle. In Figure '1, a strip 44 is disposed angularly with respect to the roll axis in such a manner as to direct the tear of the web toward one side of the angle, and along the edge 45 of the strip 44. In both figures, small arrows denote the direction of the lines of tear.

To assist in the positive action of parting a portion of the web from the roll, in the forms shown in Figures 7 and 8, the piece 42 and the strips ll extend outwardly from under the respective web ends and are adapted (by having adhesive applied to these projecting portions), to adhere to the running web IT, hen contact is made'with the running web. It is'also believed to be obvious, that when it is considered desirable, a reinforcing strip may be secured beneath the web ends 22 in the forms shown in Figures 2 and 4 similar to the arrangement shown in Figure 6. In all of the above instances, it is preferable that the strip material be stronger in tear resisting properties than the web material.

From the above it is believed to be obvious that an improved means for releasably holding a web end to a web renewal roll, and of quickly releasing the same therefrom has been provided. It is also believed to be obvious that due to there being a bare area of web material left between the adhesive strip 24 and each of the respective stickers, the line of tear will be directed and controlled to start at the leading edge of the web at a point adjacent the sticker and continue through the narrow bare area of web material toward and to the edge of the web on the end of the roll, along a. comparatively short line and generally at an angle extending backwardly the roll agreeing with the angle of the adhesive or the adjacent edge of the sticker, whereby a quick release of the web end results with a minimum of strain being imposed upon the running web to which it is joined. As soon as the webs are joined, the angularly directed or arcuate sticker edge adjacent the aforesaid bare area of web material and the strip of adhesive constitute means to direct the web rupture, or tear, from the leading edge of the web end in a diagonal or angular course,

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential attributes of said web end, whereby separation of the web end from the roll requires the rupture of a portion of the web end, and means to direct the rupture in a diagonal course from the leading edge of the web end toward a side edge of the web.

2. In a means to secure the web end of a web roll to the body thereof and to permit readily freeing the said end when desired, a sticker pasted to the web end and to the roll, a member.

of greater tear resisting strength than the web secured to the under side .of the web end, said member being disposed in respect to the edge of the web end to present an edge to direct the course of the tearing of the web end from one edge of the web end diagonally to another edge thereof when the end is freed.

3. Means to secure the web end:v of a web roll to the body thereof, comprising aticker secured to the web end, and extending over an edge thereof-and secured to the body of the roll, and adhesive means on said web end adjacent to, but spaced from'said sticker, to join a running web to the web end when contacted therewith, said sticker having a greater strength than the web and having an edge intersecting theedge of the web end adapted to insure tearing of the web between the sticker and the said adhesive means,

and to direct the tear toward one end of the roll when the join between the webs is made.

4. The method of separating a. web end, which is in connection with a web roll at a point on its leading edge, which consists in causing adherence of the web end to a running web, thereby tearing the web end beside the point of connection, and directing the tear angularly toward one end of the roll.

5. The method of separating a web end, which is in connection with a web roll at a point on its leading edge, which consists in engaging the web end at a point beside the point of its connection with the roll, then pulling the web end away from the roll to cause rupture of the web portion between the point of connection and the engaged point, and directing the course of the rupture from the leading edge of the web end angularly toward one side thereof.

6. The method of holding and quickly freeing a web end from a web roll,- which consists in connecting the web end to the web roll at a point on the leading edge of the web end, causing a running web to adhere to the web end, and then parting the web along a line directed from the point of its connection with the web roll angularly to an edge of the web disposed at an angle to the aforesaid leading edge, by pulling the web end away from the roll by a continuance of the movement of the running web.

7. The method of preparing a replacement web roll for a non-stop roll changing device in a machine operating upon a web, which includes forming the end of the web with a salient angle, securing the web portion at the apex of the angle to the roll, and disposing a diagonally positioned strip of adhesive on the outer surface of the web end behind and adjacent the portion which is secured to the roll, whereby when the pasted surface is made to contact with a running web, it will adhere thereto, and the web end will be ruptured between the secured portion and the pasted surface, thus freeing the web end from the roll.

8. The method of substituting the web of a replacement web roll, for a web running to a machine from a substantially expired web roll, which consists in securing the leading end of the web of the replacement roll to its body by gummed slips, each disposed adjacent a side edge of the web end, applying a strip of adhesive 'on the outside of the web end along its leading edge and extending adjacent the side edges of the web end but spaced therefrom to leave an area beside the slip and also a greater area behind the slip without adhesive, rotating the replacement roll at substantially the speed of the 'run ning web, causing contact of the running web and the adhesive covered portion of the web end and thereby lifting the leading edge of the web end from the body "of the replacement roll and freeing it therefrom by tearing the web through the said uncoated areas and diagonally with respect to its length, and severing the web running from the then expired roll.

9. In combination, holding means for securing the free end of the web of a web roll to the body of the roll whereby it will be held thereto while the roll is being rotated preliminary to splicing the said web end to a running web, and a tear directing member arranged to cause the web to tear adjacent the holding means and free the web end from the roll when the splice is made.

10. In combination, holding means for securiing the free end of the web of a web roll to the body of the roll whereby it will be held thereto while the roll is being rotated preliminary to splicing the said web end to a running web, and a tear directing member secured to the said web end and arranged to cause the web to tear adjacent the holding means and free the web end from the roll when the splice is made.

11. In combination, holding means for securing the free end of the web of a web roll to the body of the roll, whereby it will be held thereto while the roll is being rotated preliminary to splicing the said web end to a running web, and tear directing means arranged to cause the web to tear in a generally diagonal direction and free :the web end from the roll when the splice is made. 7

12. In combination, holding means for securing the free. end of the web of a web roll to, the

body of the roll, whereby it will be held theretowhile the roll is being rotated preliminary to splicingthe said web end to a running web, and

tear directing means secured to the said web end and arranged to cause the web to tear in a generallydiagonal direction and free the web end from the roll when the splice is made.

13. In combination, holding means for securing the free end of the web of a web roll .to the body of the roll, whereby it will be held thereto while the roll is being rotated preliminary to. splicing the said web end to a running web, and tear directing means secured to the said web end and arranged to cause the web to tear in a plurality of places in generally diagonal directions leading toward each end of the roll and tree the web end from the roll when the splice is made.

14. In combination, holding means for securing the free end of the web of a web roll to the body of the roll, whereby it will be held thereto while the roll is being rotated preliminary to splicing thesaid web end to a running web, and tear directing means secured to the said web end and arranged to cause the web to tear in a,plurality of places in generally diagonal and relatively converging directions and free the web end from the roll when the splice is made.

15. Holding means for securing the free end, of the web of a web roll to the body of the roll,- whereby it will be held thereto while the roll is being rotated preliminary to splicing the said web end to a running web, said holding means including-a sticker overlying the web end andsecured to it and the next course of the web on the roll, and a strip of adhesive applied alongthe edge of the free web end, said sticker having an edge disposed generally parallel to and slightly spaced from the strip of adhesive, both the adhesive strip and the aforesaid sticker edge being disposed to cause the web material therebetween to tear in a direction generally diagonal to the edge of the web, when the splice is made.

16. Holding means for securing the free end" of the web 01' a web roll to the body of the roll,; whereby it will be held thereto while the roll is being rotated preliminary to splicing the said web end to a running web, and wherein the webend is'formed to provide a corner at the free end free end and the side edge of the web to insure;

tearing of the web across the aioresaid'corner, when the splice is made.

ALBERT J. HORTON.