US2643719A

US2643719A - Web-slitting machine with minutely variable cutting-roll equipment

Info

Publication number: US2643719A
Authority: US
Inventors: Schneider Max
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-05-30
Filing date: 1950-04-20
Publication date: 1953-06-30
Anticipated expiration: 1970-06-30

Description

June 30, 1953 l M. SCHNEIDER 2,643,719

WEB SLITTING MACHINE WITH MINUTELY VARIABLE CUTTING-ROLL EQUIPMENT med April zo, 195o s sheets-sheet 1 June 30, 1953 M. SCHNEIDER 2,643,719

WEB SLITTING MACHINE WITH MINUTELY VARIABLE CUTTING-ROLL EQUIPMENT Filed April 20, 1950 3 Sheets-Sheet 2 A mv Illilllllll M. SCHNEIDER WEB SLITTING MACHINE WITH MINUTELY VARIABLE CUTTING-ROLL EQUIPMENT June 30, 1953 Filed April 20, 195@ Patented June 30, 19573 WEB-SLITTING MACHINE WITH MINU'IKELY VARIABLE CUTTING-ROLL EQUIPMENT Max SchneideDusseldorf, Germany Application April 2o, 195o, serial No. 167,032

l l In Germany May 30, 1949 .12 claims. (01.'164-70 This invention relatesI to a web-slitting Inachine with a newly invented cutting-roller equipn ment for slitting any web width lying above a" minimum, said cutting roll equipment being `ad justable in variable stepspreferably from millimeter to millimeter or multiples thereofand to a slide rule designed to ascertain the sequence o setting up of the cutting roller portions, by means of which rule the cutting sleeve and cutting groove required in each case as well as the number of spacing rings can be determined according to the widths to beslit.

ln conventional cutting rollers for kweb-slitting machines, non-split cutting sleeves and split spacing rings are used. These have the disadvantage that either the cutting sleeves not in use had to remain on the shaft,thus causing the iormation of stripes or identical lines on many prevalently soft and thin types of paper, or that the setting up or removal of the cutting sleeves required dismantling the cutting shaft in a troublesome and time consuming manner.

Arrangements with split cutting sleeves and whole spacing rings have also become known which enable the unused cutting sleeves to be taken out. However, in order to cut any width, a large number of cutting sleeves of various widths with equal spacers or a large number of dinerently wide spacers with equal cutting sleeves must be provided and such requires va large amount of cutting sleeves or spacers of different widths. Thus, an yinconvenient and time-consuming calculationand measuring had to be done in the event of a change of the widths in order to determine the sequence of settings or the cutting sleeves and cutting grooves or the spacing rings to be chosen.

On the contrary, the equipment of the cutting shaft, in accordance with the instant invention, provides only for a limited number of different cutting sleeves of equal widths and equal groove dimensions, whereby, on a single cutting sleeve, the group of cutting grooves is arranged in an unsymmetrical manner, so as to provide a more closely graduated series of cutting edges when a series of cutting sleeves or a series of cutting sleeves and spacing sleeves is used, and in accordance with the desired stepping of the dii-Terent widths. Thus, the number'of types of the heterogeneous cutting sleeves to be provided is equal to the quotient from the cutting groove clivision and the cutting width step.

The width of the spacing rings, provided in a given case, is equal to the distance from the first and the last cutting edge of 4thel cutting sleeve,

augmented by a further groove division or equal to a'proper fraction i. e. a half or a third of this measure. Further, the dimensions, having a definite ratio, respecting the cutting lsleeves and the spacing rings, as welll as staggering of the cutting groove groups from one cutting sleeve type to another, performed by a certain measure, form the basis for the use of a slide rule, which is provided Vby this invention. The slide rule is used to ascertain the sequence of setting up and the necessary cutting sleeve type and cutting groove, aswell as the number of spacing rings according to the widths to be slit. The slide rule is constructed Aso that one part of it is formed in conformance to the number of existing cutting sleeve types and their cutting grooves, while the other part is provided with a division according to the width of the spacing'rngs.

Hereafter follows the description of an example of an embodiment of the invention, with reference to the accompanying drawings, wherein;

Fig. 1 shows a side view of the web-slitting machine,

Fig. 2 shows a front View of the web-slitting machine, Y

Fig. 3 shows a section of a cutting sleeve (male type), t Fig. 4 shows a section of a lspacing ring (female ype), l

Fig. 5 shows a section of a replacement ring (male type),

Fig. drepresents an example of the cuttingroller equipment,v v

Fig.v '7 showsthe front view of the slide rule,

'ig. 8 shows a cross section through the slide ru e. 4 v

In order t0, explain the example of an embodiment represented by the figures, the following dimensions are taken as a basis:

Width of cutting sleeve 'a'=45 mm.

Sum` of distances b-f-c=15 mm.

Width of group ofcutting grooves d=v30 mm. Index of grooves e=5` mm.

Number of cutting `grooves=7' Width of spacing `rings f=35 mm.

Width of replacement rings g=35 mm.

In the web-slitting machine represented by Figs. land 2, the paper web 2 coming from the roll l is conveyed through, over the

guide rollers

3, 4 and 5, between the cutting roller described in detail hereafter, and the circular knives '1, and isiinally'lrewound on the rewinding roll I0 reposng on the bearing drums 8 and 9. The

'circular knives 1 vare `mounted in a laterally movable manner according to the web widths to be 10 slit. In order to maintain an unchangeable bearing pressure between the rewinding reel I and the cutting roller 6, the whole cutting unit is `essary with a change of the cutting widths in a given case, one or several cutting sleeves are removed and replaced by the split replacement rings, represented in Fig. 5, the width g of which corresponds to the Width f of the spacing rings, so that for this case also the condition of being able to slit from millimeter to millimeter can be complied with. The cutting sleeves Il, the spacing rings I8, and the replacement rings I9 are secured against lateral displacement and tumbling out by being clamped between the end nuts 2l nxed on the tubular core 20 of the cutting roller by means of threads.

465 500 535 570 S 6:10 675 710 745 12 13 14 15 16 17 18 L9 20 815 850 885 920 955 Q90 l, 025 1, 050 l, 095 22 23 24 25 26 27 28 29 3() 1,165 1, 200 1,235 1, 270 1, 305 1, 340 1, 375 1,1110 1, 445 32 33 34 35 36 37 38 39 40 hydraulically relieved through the tension cable I6 led over the guide rollers l5.

The equipment of the cutting roller according to the invention includes a limited number of different, split cutting sleeves I1 (Fig. 3) of an equal width a. The index of the cutting grooves e and, thereby, also that of the groups d of cutting grooves, comprising, the cutting edges h, i, k, Z, m, n and o, is uniform in the different types of cutting sleeves. The difference in kind of the cutting sleeves lies only in the lay-out of the groups of cutting grooves d, that is, in the variable distances b and c of the outer cutting edges h and o from the cutting-sleeve edges for the particular case. These distances b and c, the sum of which remains constant, are altered in such a manner that one distance increases by the decrease of another or, reversely, so that the groups d of the cutting grooves e are arranged by a 1 mm. staggering to each other according to the desired graduation of slitting widthsl from millimeter to millimeter. Hence with a groove 45 index e of 5 mm. taken as a point of departure for` this example of embodiment, the number of types of the different cutting sleeves is equal to the quotient `from the cutting-groove index and the step of cutting widths; consequently that number is limited to 5: 1:5 types of distinct cutting sleeves. In Figure 2, four cutting sleeves are illustrated. In this regard, the number of the cutting sleeves utilized accords with the number of the cutters. However, the total number of cutting sleeves provided for use is greater than the number of cutters. Thus, five types of different cutting sleeves are provided, so that, out of ten cutting sleeves,` there will be two of each type. The number of types of cutting sleeves results from the quotient out of the cutting-groove division and the step of the cutting width, as will be described. Consequenly, the number of types of the cutting sleevesis determined by the chosen cutting groove division and the cutting width stipulated.

The width of the non-split, uniform spacing rings i8 (Fig. 4) corresponds to the distance between the rst and the last cutting edge h and o of the cutting sleeve, augmented by a further groove index e or the product from the number of cutting edges and the groove index; therefore, with reference to the actual example of the embodiment: 30+5=35 mm. or 7 5=35 mm. For the decrease of the cutting points, becoming nec- For determining the sequence of settings, a slide rule (Fig. 7) is provided, by means of which and by the aid of the above calculating table the required cutting sleeve and cutting groove as well as the number of the spacing rings for the slitting width desired can be ascertained. The slide rule (Fig. 7) consists in a guide 22, provided with graduations according to the number of extant cutter sleeves and cutting grooves, and of a slider 23 gliding in the guide 22, the graduation of which slider corresponds to the width f of the spacing rings I8, and in a cursor 24 arranged slidably over both parts. The table contains a series of basic numbers of widths capable of ibeing taken at will and which increase each time by one width of a spacing ring I8, as well as the corresponding number of spacing rings.

The slide rule is applied as follows: The cursor 24 of the slide scale is set, with its hairline, on the initial cutting sleeve and cutting groove to be chosen to ones liking. From the width of web to be slit, the next basic width number lying below it in the calculating table is deducted and the resulting difference, having been read on the slider 23, is brought to coincide with the adjusting hairline on the cursor 24. The right or left arrow of the slider 23 then indicates, on the guide 22, the immediately following cutting sleeve and cutting groove that immediately follows. The number of the spacing rings is taken from the calculating table; indeed, it corresponds to the v number placed under the basic width number of the table when the latter is deducted from the number indicating the Width to be slit, Attention should be paid to the fact that if the left arrow of the slider 23 is the indicating one, the number of spacing rings is to be augmented by 1.

In order to explain the use of the slide rule and the table, an example is. given below for the complete equipment of a cutting roll, with gures according to this example.

Suppose that a paper web having a total web width of 650 mm. has to be slit into single strips of 249, 158, and 203 mm. widths respectively and to be rewound, while the remaining strips of a total width of 40 mm. will fall ofi as trimmings. The set-up has to be done on principle from the left, that is, it may begin with any cutting sleeve and any cutting groove whatsoever.

First of all, begin with the set-up for the strip of 249 mm. of width. As mentioned previously, any cutting sleeve whatever out. of the live available types may be chosen and be mounted, as the nrst cutting sleeve, on the tubular core 20 of the cutting roller. Of this cutting. sleeve, any cutting groove may be chosen as yWell in order to serve asthe first cutting point l(in this case, Y

for the trimmings) The cutting sleeve type 2,(and its groove 3) having been chosen as the first cutting sleeve, the hairline on the cursor 24 of the slide rule has to be adjusted to the cutting groove 3 of the cutting sleeve 2, as depicted in Figure 7. Y

The width of the strip to be cut being 249 mm., the next smaller basic number is located on the table and is deducted from the width of strip (M9-220:29).` The differenceV is 29. This number 29 is read on the slider'23 and brought'under the hairline of the cursor `24. The left-hand arrow, marked by +1, of the slider `23 shows now, on the guide 22 of the slide rule, the next cuttingsleeve type I to be xed on the tubular core 20, as well as the cutting groove 2. vThe space between the iir'st and the second cutting sleeve will be lled up by spacing rings I8, the number of which can also be seen from the table; indeed, it corresponds tc the number'read before from the table. In this case, the number of spacing rings is indicated as 5, the number in the column below 220, and has to be augmented by 1, as the left-hand arrow of the slider indicates 5, Awhich results in iii-1:6 spacing rings.

The width of strip to be cut next is 158 mm. The hairline of the cursor 24 will now be adjusted to the cutting groove 2, found out above, of the cutting-sleeve type l.

Of the width of strip to be cut, the next smaller basic number 150) of the table Will be deducted (S-150:8). The difference is 8. The number e of the slider 22 will be brought under the hairline of the cursor and the right-hand arrow oi the slider indicates the cutting-sleeve type 4 and its cutting groove 3 to be mounted now on to the tubular core 29. The number of the spacing rings is shown under the basic number 150y taken before from the table, that is, 3 spacing' rings.

The width of strip to be slit next is 203 mm. .1.

The hairline of the cursor 24 Will be adjusted new on the cutting groove 3 of the cutting-sleeve type t found out last (Figure 5).

From the strip` widthof 203 mm. the next smaller basic number (185) of the table (Fig. 6) has to be deducted (S-185:18). The diilerence is i3. The number 18 of the slider 23 will be brought under the hairline of the cursor and the right-hand arrow now indicates the last cutting sleeve, that is, the cuttinggroove 1 ,of cutting-sleeve type 2.

The number of spacing rings to be ascertained from the table will only have to be increased by 1 when the left-hand arrow of the slider indicates. The reason for this will be explained by the following limit case: If, for instance, the slitting be done on the cutting groove 1 of the cutting-sleeve type 5 and the diiference resulting from the basic number of the table and of the strip width to be slitted be 1, the left-hand arrow of the slider indicates the cutting groove I of the cutting-sleeve type I. That means consequently that the cutting point on the `last cutting groove of the preceding sleeve passes to the nrst cutting groove or the following sleeve. Since the division on the slider 23 corresponds to the width of a spacing ring, said passage or leap is toc short by one spacing-ring width, so that in indicating by the left-hand arrow, one spaclng-ring width has to be added.

6 frire ppssibiiity. of appiiqauonrlof .me cuttingshaft equipment'according to the invention is not limitedtoL theA dimensions of the cutting sleeves vandspacing rings taken asa point of departure Afor -an example or one embodiment, nor to the y graduation of the slitting Widths andto the number oi` grooves, butextends, on the'contrary, also to any other number of` groovesindex of grooves and graduation of slittingwi'dths whatever, regardless ofthe ,selected measuring unit. Thus, limitation is sought only in accordance withthe terms andspirit ofY theappended claims.. .o What is claimed is: l f

l., A cutting roller equipment forweb-slitting machines designed toslit running webs voi paper, carton or the like, in` any Width whatever above a minimum, said equipment being adiustablein steps, for instance from millimeter to millimeter, comprising a roller and individual cutting sleeves arranged inV spacedfashion on the roller, each of said sleeves being of equal. width and having cutting. grooves of equal width, the cutting grooves oneach cutting sleeve being 'variably spaced with respect to the outerr edges of the sleeve.

2. In a cutting roller equipment .for web-slitting machines designed to slit running webs of paper, carton or the like, in any width whatever above a minimum, said equipment being adjustable in steps, for instance from millimeter tomil- -.lime.t.erV a, number of4 `cutting vrsleeves, of equal steps, for instance from millimeter .to millimeter,

'wherein the cutting grooves on the sleeves are of the same width and are variously spaced on the sleeves according to the desired graduation by edge portionson each sleeve of unequal width.

li. A cutting-roller equipment for web-slitting machines designed to slit running webs of paper, carton or the like, in any width-whatever above a minimum, said equipment being adjustable in steps-,for instance from millimeter to millimeterwherein the sum ofthe distances of the outward cutting edges on a cutting sleeve from the cutting-sleeve, edge ,lying nearest ineach case isconstantand the sleeves have `outer non-cutting spaces of variablepwidth, andspacing rings adapted to ,be4 placed betweenr thersleeves, ksaid rings being of the same width as the sleeves.

5. A cutting-roller equipment for web-slitting machines designed to slit running webs of paper, carton or the like, in any Width whatever above a minimum, said equipment being adjustable in stepsfor instance from millimeter to millilimeter-comprising cutting sleeves, each sleeve having groups of cutting groups formed between the edge non-cutting spaces, the width of the groups of groups being constant and the width of the edge non-cutting spaces being variable, the number of types of the varied cutting sleeves being equal to the quotient from the cuttinggroove index and the cutting-width step.

6. A cutting-roller equipment for web-slitting machines designed to slit running webs of paper, carton or the like, in any Width whatever above a minimum, said equipment being adjustable in steps-for instance from millimeter to millilimeter- -in which the number of types of the individual cutting sleeves is equal to the quotient from the cutting-groove index and the cutting- Width step, and spacing rings adapted to be placed Ibetween the sleeves, the rings being of the same type and Width as each other.

7. A cutting roller equipment for web-slitting machines designed to slit running Webs of paper, carton or the like, in any Width whatever above a minimum, said equipment being adjustable in stepsfor instance from millimeter to milli limeter-in which the groups of cutting grooves en the individual, varied cutting sleeves are arranged in a staggered way one to another by varying the Widths of the non-cutting outer portions of the sleeves according to the desired graduation, and the width of the spacing rings is equal to the distance from the first to the last cutting edges of the cutting sleeve, augmented by a Further index of grooves, or equal to a proper fraction of this measure.

8. A cutting-roller equipment for web-slitting machines designed to slit running Webs of paper, carton or the like, in any Width Whatever above a minimum, said equipment being adjustable in steps-for instance from millimeter to millilirneter--in which the sum of the distances of the outward cutting edges on a cutting sleeve from the cutting-sleeve edge lying nearest in each case is constant, and the Width of the spacing rings is equal to the distance from the first to the last cutting edge of the cutting sleeve, augmented by a further groove index, or is equal to a proper fraction of this measure.

9. A cutting-roller equipment for web-slitting machines designed to slit running Webs of paper, carton or the like, in any width whatever above a minimum, said equipment being adjustable in stepsmfcr instance from millimeter to millilimeter-Wherein the number of types of the varied cutting sleeve is equal to the quotient from the cutting-groove index and the step of the cutting Width, and the Width of the spacing rings is equal to the distance from the Ifirst to the last cutting edges of the cutting sleeve, augmented by a further groove index, or is equal to a proper fraction of this measure.

1%. A cutting-roller equipment for web-cutting machines, designed to slit running Webs of paper, carton or the like, in any width Whatever above a minimum, said equipment being adjustable in steps--ior instance from millimeter to millimeter-Wherein the groups of cutting grooves limited by the first and the last cutting edges on the individual, cutting sleeves are of the same Width and the non-cutting edges of the sleeves are of varied Width, split replacement rings adapted to be substituted for removed sleeves on the roller equipment, the Width of the split replacement rings to be set up in place of the re- 5 moved cutting sleeves, corresponding to the width oi the spacing rings, and the shape of the replacement rings corresponding to the shape of the cutting sleeves.

11. A cuttingroller equipment for web-cutting machines designed to slit running webs of paper, carton or the ll" in any Width Whatever above a minimum, said equipment being adjustable in stepsfor instance freni millimeter to millimeter-tvherein the surn of the distances of the outward cutting edges on a cutting sleeve from the cutting-eisers edge lying nearest in each case is constant, spacing rings between the cutting sleeves, anc split replacement rings adapted to replace remcved cutting sleeves, the Width of the split replacement rings to be set up in place of the removed cutting sleeves corresponding to the Widths ci the spacing rings, and the shape oi' the replac .ent rings corresponding to the sha of the cutting sleeves.

l2. A cutting-roller equipment for Web-cutting machines cesig nd to slit runnng Webs of paper, carton or the l in any w 'n whatever above a minimum comprising cutting sleeves, split spacing bet el i cutting sleeves, and split s adapted to be set up in place of removed cutting sleeves, said equipment being adjustable in steps-fer instance from millimeter te miilimeter-wherein the number of types of cutting sleeves is equal to the quothe cutting-groove index and the cutand the Width of the split regs to be et up in place of the resleeves corresponds to the width of the spacing rines, the shape of the replacement corresponding to the shape of the cutting sleeves.

MAX SCHNEIDER.

in the rile of this patent UNiTED STATES PATENTS Number Name Date 863,907 Sturtevant Aug. 13, 1907 1,741,520 Jagenberg Dec, 31, 1929 1,875,927 Keuiiel Sept. 6, 19321 1,930,852 Keuiel Oct. 17, 1933 2,312,550 Hornbostel Mar. 2, 1943 FOREIGN PATENTS Number YCountry Date 477,142 Great Britain Dec. 22, 1937