US2991679A

US2991679A - Web guide attachment for deflecting web with respect to cutter for obtaining bias cut

Info

Publication number: US2991679A
Application number: US603324A
Authority: US
Inventors: John F Moran
Original assignee: Brooks Paper Co
Current assignee: Brooks Paper Co
Priority date: 1956-08-10
Filing date: 1956-08-10
Publication date: 1961-07-11
Anticipated expiration: 1978-07-11

Description

2,991,679 WEB WITH AS CUT 3 Sheets-Sheet 1 J. F. MORAN HMENT FOR DEFLECTING 0R OBTAINING BI WEB GUIDE ATTAC July 11, 1961 RESPECT TO CUTTER F Flled Aug 10, 1956 INVENTOR. JOHN F. MORAN BY July 11, 1961 ORAN 2 991,679

J. F. M 9 WEB GUIDE ATTACHMENT FOR DEFLECTING WEB WITH RESPECT TO CUTTER FOR OBTAINING BIAS CUT Filed Aug. 10, 1956 5 Sheets-Sheet 2 FIG. 7

INVENTOR. JOHN F. MORAN July 11, 1961 J. F. MORAN 2,991,679

- WEB GUIDE ATTACHMENT FOR DEFLECTING WEB WITH RESPECT TO CUTTER FOR OBTAINING BIAS CUT Filed Aug. 10, 1956 5 Sheets-Sheet 3 INVENTOR. JOHN F. MORAN FIG. 3

Patented July 11, 1961 2,991,679 WEB GUIDE ATTACHMENT FOR DEFLECTING WEB WITH PECT T CUTTER FOR OBTAIN- ING BIAS CUT John F. Moran, Beverly Hills, Mo, assignor to Brooks Paper Company, St. Louis, Mo-., a corporation of Missouri Filed Aug. 10, 1956, Ser. No. $33,324; 13 Claims. (Cl; 83-443) This invention relates in general to certain new and useful improvements in methods and means for manufacturing diamond-shaped sheets of wrapping materials and the like and, more particularly, to a device which can be attached to a web-cutting machine so as to make bias cuts and thereby form four-sided non-rectangular sheets capable of being thereafter cut into diamondshaped sheets.

It is a primary object of the present invention to provide means and methods for manufacturing a plurality of diamond-shaped sheets of packaging material.

It is a further object of the present invention to provide an attachment for a web-cutting machine which permits a web of material passing through the machine to be bias cut.

Similarly, it is an object of the present invention to provide a device which can readily be attached to a conventional web-cutting machine of the continuous-sheeter type to adapt such machine for bias-cutting.

It is also an object of the present invention to provide a bias-cutting attachment of the type stated which can be readily and quickly attached to a conventional webcutting machine.

It is another object of the present invention to provide a bias-cutting attachment of the type stated which can be speedily and simply adjusted to make bias cuts at various selected angles.

With the above and other objects in view, my invention resides in the novel features of form, construction, arrangement, and combination of parts presently described and pointed out in the claims.

In the accompanying drawings (three sheets)-- FIG. 1 is a side elevational view of a web-cutting machine provided with a bias-cutting attachment constructed in accordance with and embodying the present invention;

FIG. 2 is a top plan view of the web-cutting machine;

FIG. 3 is a sectional view taken along line 33 of FIG. 2;

FIG. 4 is a sectional view taken along line 44 of FIG. 3;

FIG. 5 is an exploded perspective View of the attachment, partly broken away and in section;

FIG. 6 is a perspective view of the paper guide used with the attachment;

FIG. 7 is a sectional view taken along line 77 of FIG. 6;

FIG. 8 is a fragmentary elevational view of the webcutting machine incorporating the bias-cuttin g attachment and illustrating the web being cut on a bias;

FIG. 9 is a fragmentary elevational view of the webcutting machine with the bias-cutting attachment removed and illustrating the web being cut at right angles;

FIGS. 10 and 11 are perspective views of a stack of bias cut sheets just prior to being cut to form a plurality of stacks of diamond-shaped sheets; and

FIGS. 12 and 13 are perspective views showing two and three stacks, respectively, of diamond-shaped sheets after the cutting operation has been completed.

Referring now in more detail and by reference characters to the drawings, which illustrate a preferred embodiment of the present invention, A designates a webcutting machine comprising a pair of spaced parallel side frames 1 adapted to be bolted or otherwise rigidly mounted upon the floor or other similar supporting structure and being provided with rearwardly projecting auxiliary frame-arms 2. Journaled at their ends in, and extending horizontally between, the frame-arms 2 are

tensioning rolls

3, 4, and similarly journaled in, and extending between, the side frames 1 upwardly and forwardly of the

tensioning rolls

3, 4, is a main feed roll 5 and a shaft 6, the latter being, in turn, positioned upwardly and forwardly with respect to the feed roll 5, and, furthermore, being provided with a plurality of laterally adjustable hold-down rollers 6. Mounted at its ends upon and extending between the side frames 1 is a channel member 7 having an angularly extending upper section 7' and a vertically extending lower section 7". Rigidly secured to the lower section 7" in downwardly spaced relation to the feed roll 5 and shaft 6 is a stationary cutterbar 8 adapted for cutting co-operation with a rotating cutter-bar 9 mounted in and forming a part of a cuttingreel 10 which is operatively carried by a shaft 11 journaled in, and extending horizontally between, the side frames 1. Beneath the stationary cutter-bar 8 is a plurality of arcuate feed-01f fingers 13 for directing the several sheets onto a conventional multi-tape sheet conveyor 14 which transfers the sheets to a conventional jog-box B. Suitably mounted on the intake side of the Web-cutting machine A are two conventional roll stands R having a plurality of rolls of sheet material, such as cellophane, for instance, arranged to form a single combined web W consisting of ten superposed, marginally registering and concurrently traveling individual webs w. Of course, more or less than ten webs w can be employed as circumstances require. The feed roll 5, shaft 6, cuttingreel 10, and conveyor 14 are driven in timed relation from powered mechanism not specifically shown in detail. In this connection, it should be noted that the Web-cutting machine A is conventional in design and, therefore, need not be shown or described in extensive detail, the present invention residing, rather, in the biascutting attachment and method of using same hereinafter described.

Rigidly secured by bolts 16 to one side frame 1, forwardly of the feed roll 5, is a pivot block 17, and similarly secured by bolts 18 to the other side frame 1 is an upstanding slide bracket 19 provided with a straight slot 20 which is preferably slightly inclined to the vertical. Rockably mounted upon the pivot block 17 is a lower bearing block 21, and adjustably secured to the slide bracket 19 by means of a bolt 22 and nut 23 is an upper bearing block 24. Extending between the lower bearing block 21 and the upper bearing block 24 is a transversely extending angularly inclined bar 25 comprising an outer rotatable member 26 which telescopingly engages an inner fixed member 27, the latter being rigidly mounted in the lower bearing block. The outer member 26 is journaled for rotation in the upper bearing block 24 and has a gear 28' rigidly secured thereto in spaced relation to the upper bearing block 24. Secured to' the slide bracket 19 through the slot 20 by means of a bolt 29 and nut 29' is a setting block 30 which normally abuts the upper surface of the upper bearing block 24. Journaled on the setting block 30' is a stub shaft 31 provided on its inner end with a large spur gear 32 adapted to mesh with the small spur gear 28. Rigidly secured to the outer end of the stub shaft 31 is a driven pulley 34 which is located in spaced relation to a drive pulley 35 mounted on the shaft 6. A drive belt 36 is trained around the

pulleys

34, 35, so that power may be taken from the shaft 6, transmitted to the stub shaft 31, and then to the outer rotatable member 26 through the

meshing gears

28, 32.

Rigidly secured to the angularly extending upper section 7 by means of bolts 37, 38, is a guide 39 having a horizontal beam 40 of trapezoidal cross-section and a plurality of vertical

parallel plates

41, 42, 43, 44, each provided with a

slot

45, 46, 47, 48, respectively, so that the

plates

41, 42, 43, 44, may be moved lengthwise along the beam 40. The

plates

41, 42, 43, 44, are also provided with arcuate

top portions

49, 50, 51, 52, respectively, which are adapted to be positioned adjacent to and below the angularly inclined bar 25, said

plates

41, 42, 43, 44, having

back edges

53, 54, 55, 56, respectively, of arcuate contour so as to lie adjacent to the feed roll 5 and shaft 6. The

plates

41, 42, 43, 44, also have aligned

forward edges

57, 58, 59, 6%, respectively, which are slightly downwardly inclined and terminate adjacent the stationary cutterbar 8, as seen in FIG. 4. The plates4l, 42, 43, 44, are also each provided with a pair of feet 61-61, 62-62, 63-63', 64-64', respectively, the bottom surfaces of which are adapted to snugly engage the upper section 7 of the channel 7 when the guide 39 is bolted thereto.

In use, the

nuts

23 and 29 are loosened and the upper bearing block 24 and setting block 30 are moved together so as to set the angularly inclined bar 25 at the desired angle. A drive belt 36 of suitable size is then trained around the

pulleys

34, 35, and the nuts 23, 29', are tightened. The bolts 37, 38, which secure the horizontal beam 40 of the guide 39, are loosened and the

plates

41, 42, 43, 44, are moved along the horizontal beam 40 until their arcuate top portions 49, 5t), 51, 52, are adjacent to the angularly inclined bar 25. The bolts 37, 38, are then tightened so as to hold the

plates

41, 42, 43, 44, in position.

A plurality of separate continuous webs w, preferably of equal width and arranged in marginal registration, are withdrawn from the roll stands R and are trained around the

tensioning rolls

3, 4, and brought into facewise marginally registered abutment for passage between the feed roll 5 and the hold-down rollers 6', which feed the combined web W along the

back edges

53, 54, 55, 56, of the

plates

41, 42, 43, 44, respectively, and upwardly to the power-driven angular bar 2-5. The combined web W then passes around the angularly inclined bar 25, is tilted in the manner shown in FIG. 8, and is fed downwardly along the

forward edges

57, 58, 59, 60, of the

plates

41, 42, 43, 44, to the cutter bars 8, 9, where the combined web W is bias cut along a line xx to form sheets s. The superposed bias cut sheets s thus formed pass forwardly along the feed-01f fingers 13 and onto the first endless conveyor 14, which, in turn, delivers the sheets s to the jog-box B.

The sheets s are delivered to the jog-box B in the form of a parallelogram as seen in FIG. 2 and may thereupon be cut by a knife K, such as shown in FIG. 10, so as to form two stacks of diamond-shaped sheets s, as seen in FIG. 12, or by a pair of conventional knives K, such as shown in FIG. 11, so as to form three stacks of diamondshaped sheets s, as seen in FIG. 13. Of course, it is to be understood that the size of the sheets s may be varied by adjusting the speed of rotation of the cutting-reel upon which is secured the rotating cutter-bar 9. Thus, if it is desired to form diamond-shaped sheets s, the length of sheets s will be twice the width, and, similarly, if it is desired to form diamond-shaped sheets s", the length of sheets s will be three times the width.

If desired, the angularly inclined bar 25, the setting block 30, and the guide 39 may be removed from the webcutting machine A, in which case the combined web W is fed from between the feed roll 5 and hold-down rollers 6 directly to the cutter-bar 8 and the combined web W is conventionally cut at right angles along the line x'x', as seen in FIG. 9.

It should be understood that changm and modifications in the form, construction, arrangement, and combination of the several parts of the apparatus and in the several steps of the method may be made and substituted for those herein shown and described without departing from the nature and principle of my invention.

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

l. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a pre-determined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a bar around which the web is adapted to be trained as it passes from said feed means to cutter means, means for detachably supporting said bar on said machine in various skewed positions with respect to said predetermined path for feeding said Web into said cutter means at varying angles to said predetermined path when trained over said bar, and adjustable means for guiding and supporting said web substantially throughout its length from said bar into said cutter means.

2. A bias-cutting attachment for use with a Web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a pro-determined path perpendicular to the line of cut made by said cutter means, said bias cutting attachment comprising a bar around which the web is adapted to be trained as it passes from said feed means to said cutter means, said bar being interposed between said feed means and cutter means, means for detachably supporting said bar on said machine in various skewed positions with respect to said predetermined path for feeding said web into said cutter means at varying angles to said predetermined path when trained over said bar, and adjustable means for guiding and supporting said web substantially throughout its length from said bar into said cutter means.

3. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a pre-determined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a bar around which the web is adapted to be trained as it passes from said feed means to said cutter means, means for detachably supporting said bar on said machine in various skewed positions with respect to said predetermined path for feeding said web into said cutter means at varying angles to said predetermined path when trained over said bar, said bar being pivotally connected at one end to said machine and having its other end freely movable, and adjustable means for guiding said web from said bar into said cutter means.

4. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a Web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, as it passes from said feed means to said cutter means, means for detachably supporting said bar on said machine in various skewed positions with respect to said predetermined path for feeding said web into said cutter means at varying angles to said predetermined path when trained over said bar, said bar being pivotally connected at one end to said machine and having its other end freely movable, and adjustable means for guiding said web from said bar into said cutter means.

5. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a telescoping bar having a rotatable member around which the web is adapted to be trained as it passes from said feed means to said cutter means, said bar being pivotally connected at one end to said machine in slightly spaced relation from said predetermined web path and having its other end freely movable, means for detachably supporting said bar on said machine in various skewed positions with respect to said predetermined path for feeding said web into said cutter means at varying angles to said predetermined path when trained over said bar, and adjustable means for guiding said web from said bar into said cutter means.

6. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a telescoping bar having a rotatable member around which the web is adapted to be trained as it passes from said feed means to said cutter means, said bar being pivotally connected at one end to said machine in slightly spaced relation from said predetermined web path and having its other end freely movable, means for detachably supporting said bar on said machine in various skewed positions with respect to said predetermined path for feeding said web into said cutter means at varying angles to said predetermined path when trained over said bar, driving means for rotating said member in timed relation to the speed at which said web travels through the feed means, whereby to urge said web toward the cutter means at the desired speed, and adjustable means for guiding said web from said bar into said cutter means.

7. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said bar being pivotally connected at one end to said machine and having its other end adjustably mounted whereby said bar may be selectively skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plate adjustably mounted on said beam for selectable disposal longitudinally thereof between said bar and said cutter means, said plate including a margin which extends from said bar to said cutter means whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

8. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said bar being pivotally connected at one end to said machine and having its other end adjustably mounted whereby said bar may be selectably skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plate adjustably mounted on said beam for selectable disposal longitudinally thereof between said bar and said cutter means, said plate including a linear margin which extends from said bar to said cutter means and an arcuate margin which extends partially about said bar in slightly radiallyspaced relation therefrom whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

9. A bias-cutting attachment for use with a web-cutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said bar being pivotally connected at One end to said machine and having its other end adjustably mounted whereby said bar may be selectably skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plurality of plates adjustably mounted on said beam for 6 selectable disposal longitudinally thereof between said bar and said cutter means, said plates each including a margin which extends from said bar to said cutter means whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

10. A bias-cutting attachment for use with a webcutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said ba-r being pivotally connected at one end to said machine and having its other end adjustably mounted whereby said bar may be selectably skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plurality of differently sized plates adjustably mounted on said beam for selectable disposal longitudinally thereof between said bar and said cutter means, said plates each including a margin which extends from said bar to said cutter means whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

11. A bias-cutting attachment for use with a webcutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said bar pivotally connected at one end to said machine and having its other end adjustably mounted whereby said bar may be selectably skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plurality of differently sized plates of similar shape whereby as said bar is skewed to various angles said plates may move along said beam to a position of slightly spaced relationship from said bar adjustably mounted on said beam for selectable disposal longitudinally thereof between said bar and said cutter means, said plates including a margin which extends from said bar to said cutter means whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

12. A bias-cutting attachment for use with a webcutting machine having cooperating cutter means and feed means for normally feeding a web along a pre determined path perpendicular to the line of cut made by said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said bar being pivotally connected at one end to said machine and having its other end adjustably mounted whereby said bar may be selectably skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plurality of differently sized plates adjustably mounted on said beam for selectable disposal longitudinally thereof between said bar and said cutter means, said plates each including a linear margin which extends from said bar to said cutter means and an arcuate margin which extends partially about said bar in slightly radiallyspaced relation therefrom whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

13. A bias-cutting attachment for use with a webcutting machine having cooperating cutter means and feed means for normally feeding a web along a predetermined path to said cutter means, said bias-cutting attachment comprising a rotatable bar around which the web is adapted to be trained, said bar being pivotally connected at one end to said machine and having its other end adjustably mounted whereby said bar may be selectably skewed with respect to the plane between said feed means and cutter means, means for supporting said bar in said skewed position, a beam mounted on said machine parallel to said line of cut and in a common plane with said bar, and a plurality of diiferently sized plates of similar shape whereby as said bar is skewed to various angles said plates may move along said beam to a position of slightly spaced relationship from said bar adjustably mounted on said beam for selectable disposal longitudinally thereof between said bar and said cutter means, said plates including a linear margin which extends from said bar to said cutter means and an arcuate margin which extends partially about said bar in slightly radiallyspaced relation therefrom whereby as said web passes over the bar said margin functions as a support and guide for directing the web into said cutter means.

317,612 Barton May 12, 1885 352,848 Ball Nov. 16, 1886 467,316 T-alcott Jan. 19, 1892 846,716 A-shelm Mar. 12, 1907 933,540 Farnham Sept. 7, 1909 1,159,017 Goss et a1. Nov. 2, 1915 2,141,574 Wamser Dec. 27, 1938 2,283,255 Holtz May 19, 1942 2,382,997 Katz Aug. 21, 1945 2,648,381 Engel Aug. 11, 1953 2,648,380 Socke Aug. 11, 1953 2,772,734 Judelsohn Dec. 4, 1956 FOREIGN PATENTS 935,704 Germany Nov. 24, 1955