DE2011802A1 - Device for producing longitudinally directed corrugations in a web - Google Patents

Description

Koichi: ro OHKOEI, IFu j'isavja ~ shi / Japan

T ^on ,

in a train

The invention relates to an apparatus for manufacturing a longitudinal corrugation in a web.

The ■ performance according to the invention has a device, ! «Eiche z ^ ee) xModerately; prove to be" Kihrungsbett "or" Zueamiaeniigsbett " can be designated. With; diesex »forwarding

009841/1168

BATH ORIGINAL

can! aligned multiple eyes in a BaI: - ^ like £ .- £ ,. in a paper web used in the manufacture of cardboard will be generated.

In Japanese patent application 3? «* 2 * Λ95 dated June 6, 1962, a device is described which can be referred to as" merging ^{bed 1} "and which has a series of longitudinally directed converging corrugations whereby the web material is brought together into a corrugated shape wherein the bed is curved longitudinally along the corrugated surface. A similar merging bed, or guide bed, is described in U.S. Patent $ 425,388 dated February 1969 -! -. In this patent a device for the manufacture of assembled products is described, wherein an endless web to be corrugated is sucked between a series of roller wheels and a Ztiaacimeiifführungabett, which also has a longitudinally converging corrugated surface, and wherein the amplitude and the Period dr? Welluugeü progressively larger or smaller vjtrd.

In these conventional Zuaainmenführungbettfeji, however, the corrugations are formed on a horizontal plane or on a plane curved in the longitudinal direction, with the result that the lengths of the waves in the side parts are greater than in the axial parts of the bed, even if elasticity is considered to be corrugated material web is, "ο therefore difficult auBariimen the web without local stresses in the web - 'ufuhren, lasbesondere% hen the web is relatively wide..

Uüiu-iß dor find a device for production suggested by long flushes in a path, soft uin r; <* kru! mt-; a, hard and lün ^ lxches guide bed uufwü.l fjt, Una a liiTitxvlttn and an exit end bt »ait: '. t,

003341/1 163

which are each arranged perpendicular to the running direction of the web are, with a series of corrugations attic the exit and entry ends of the bed extending, the alternating Ribs and grooves "have, the corrugations continue to converge in the direction of the exit and continuous become larger in amplitude and smaller in period, and finally wherein the guide surface, which has the ribs and grooves, has such a geometry, that the longitudinal surface lengths of the web, measured with a certain surface distance from the longitudinal edges of the bed, and the transverse corrugated surface lengths of the web, measured with a certain amount Surface distance from the entry or exit end of the bed, essentially the same, or in each part of the bed are essentially the same.

It is a primary object of the invention to provide an improved guide device for the production of corrugations in a Baxm To create any width, the corrugations vary in the longitudinal direction or run parallel to the face direction, and wherein the corrugations are produced on a guide surface specially shaped for this purpose.

It is a further object of the invention to provide an apparatus for producing corrugations in a paper web, which is used in the manufacture of corrugated cardboard.

It is another object of the invention to provide an apparatus for making continuous longitudinal corrugations in a web, with no risk of the web breaking during the manufacture of the corrugations.

.Kf! eating egg £ i further object dor · invention, © Ine continuous apparatus FAW. Sucking from läa-fssgörichtan Wel

0 09841/1168

BATH ORIGINAL

su create in a path, v / eiche in pralctisehar rniö. ! economical way can be used in the herfcomialichen production and which has a simple structure and is easy to use »

The invention will now be made with reference to the accompanying drawings explained in more detail * The same references are used in all figures Reference signs to the same parts.

Figure 1 is a schematic side view of a fascine 2iur production of light cardboard, which the erfindungsgetauchte Has Pührungs- or gathering bed.

FIG. 2 is a schematic plan view of the guide bed according to the invention, showing the basic contours of FIG Shows guide surface of the bed.

Figures 5g, 3h and 5i are sections on the lines g ~ g, h-h or i-i from Figure 2 »

Figures 4a, 4b, 4c, 4d, 4e and 4f are sections of the Lines a-a, b-b, c-c, d »d, e ~ e bsw. f-f of Figure 2.

Figure 5 is a plan view of a longitudinally curved one Guide bed.

FIG. 6 is a side view of the bed of FIG.

The figures? A bie? E are sections of the bed from FIG. 5 on the lines VIIa-VIIa, VIIb-VIIb, VIIc-VIIc, VIId-VIId and VIIe-VIIe from FIG. 5 *

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BAO ORIGINAL

_ 5 -

Figures 8 to 11 are achemical views, soft explain the various arrangements of the guide bed according to the invention.

Figure 12 is a perspective view of a half-corrugated sheet useful in explaining the invention.

Figures 13 to 15 are views, each of which is one shows modified structure of the corrugation ribs on the Guide surface of the bed are formed.

Figure 16 is a schematic perspective view of a Guide bed with the end twisted.

Figures 17 to 21 are schematic side views, which different printing facilities show »lie with the Work together guide surface of the bed.

Figure 22 is a schematic view showing a wave-shaped bed arrangement using five beds that are arranged in a wavy horizontal © ad © on the Esa © »

FIG. 23 is a schematic view of the restraint device of FIG.

Figure 24 is a section explaining the type and white in which the holding device the Ätercialbalaa g @ g © a dl® Hats pushes off the bed on the Iführusgsouerflache forms are.

25 is © ine. schematise / he AiafsicM * on a © machine, welehe awel opposite © Couples voa B'ü

009 841/1168

has beds of the same design.

FIG. 26 is a non-schematic illustration of the machine from Figure 25

Figure 2? is a section through a corrugated cardboard that goes through the machine of Figures 25 and 26 has been manufactured.

Reference is first made to FIGS. 2 to 4, which show the contours of the basic guide surface of the bed according to the invention. The pump bed 30 is made of a hard material and is generally curved along its surfaces. The bed has a. Entry end 31 and an exit end 32 'which are arranged essentially perpendicular to the running direction ck-r to be corrugated with it. On the surface of the bottom face 30, a plurality of vcji walls are formed which have alternating ribs and grooves and converge towards the entrance tube 32 of the bed 30. DIE ribs and grooves of the corrugations "the zwieehen approaches the entry" walls and extend the Aucdrvatsende of the bed are such imaginary * ₅ that its amplitude in the direction zus.Austrritx-füBdt ·.? ■■ grcd.vr · WDRD while the period? k led.:; or v. ~ r'd _f ? -c do.C: the vellations on the V8Jdim's Tilt exit probe> u. d: ie d: -i rd? T iTaterdalbahn trained who

The surface ape? Pv ^ iinrd / - ^ ^! -s. ',.';: id: d- has the corrugations, isc such., ur ^ at ^ dd · - - ,, sd, d? .. ;, r ,. Longitudinal direction ve :; ! calling C'berf i - ', v i-arud- ^ e .; --r I ds ■■ 'dt-ahn, freiaeesen in

des BettE - UL -.- ä α: .ί · ^Λ _; · '; Ο: .. ·· ■■ ··: ■' ■ ''. ^; - ■;>«·:"". ^!:: ·; ■ uddigen of Beth-tm _{f r:;} EMFc SEN ^ n oineiv: '- ¹ ^ ■■■ ..!' ■■■ · jV '- ... λ ";■;;. .: ^:. ·· Ό ^. tar .ι before.;. · '-. R; i: -.

BAD OBiGiNAL

31 or loss rode 32 of the bed _t uerden equal gehal- th substantially to a localization of stresses in the Ή .- & terialbahn au prevent during Wellungsvorgangs "

In order to obtain such surface conditions of the bed 30, a rectangular longitudinally corrugated paper sheet can be used, with one end of the corrugated sheet being held in a straight line first and the corrugations formed therein gradually broken to the other end so that the corrugations are fully ausgeflacht the end, the other end being held, • which would otherwise bend "the semi-cutaway overall • weli'te web whose ends w@i?a.®n just kept _s cowardly forms _s to those of the bed of Figures 2 to M- are similar. Conversely speaking, in order to guide a material web with the lowest possible local tensions on a merging bed, it is necessary for the bed to have the surface shapes shown in FIGS. 2 to 4. These figures show, on a reduced scale of 15.5, the surface configurations obtained by breaking a corrugated web of 28 cm × 108 cm, with each of the contour lines in FIG. 2 having a height difference of 5 cm.

So that the web of material is pressed firmly against the contours of the guide surface as shown in FIGS. 2 to 4 and is brought together, Is it .necessary a suitable- ' to use a suitable auxiliary guide device that works together with the guide surface of the bed. This facility however, in the preferred embodiment of the invention can be omitted, as will be explained below.

841/1168

- ε

The web is pressed firmly against the surface of the bed by such ISini'i'i ^ uUHgtts v'ie r.ollon, Baader, cords, wires, etc. It can been blown air to the Matorialbafan _s or it may be a suitable Saiigeinriehtimg in the bed upper "surface be provided" Wsiterhin, a second bed with a Oberflächoabeschaffenheit, which coincides with the dar.'jonision ersteil bed arranged übsr the Erotes bed ".'erden, -wherein a. a suitable distance remains , so that the web can be passed through between them and brought together "

"Many other suitable pressure" or auxiliary joining devices are available to a person skilled in the art in this field, with which the material batui can be pressed onto the guide surface in a suitable manner, so that it gradually assumes the final corrugated shape. As mentioned above, the guide surface, v / elohe contains the ribs and grooves of the corrugations _% according to the? Conf5. {5 «ration which the web on the Ztisammenfülirbstt should amiclimon« There is practically no possibility "that the material web. tears while she is filled over the gradually widening ribs and deepening hats of the bed

By configuring ^ ^ESS bed having a curved or saddle-like shape, as shown in Figures 5 "to 7, it is possible to press the web material with the aid of voltage firmly against the Führungsoberfläehe dos bed. Such a bed structure can be obtained by be that one bends longitudinally the basic guide surface shown in Figures 2 to 4. Its structure is also advantageous in that it has a less concave surface over which the web of material runs without touching it when the Longitudinal orbit is correctly aligned over the contact surfaces of the bed. It has been found that the concave surface is extended when the angles oC and β are certain

0 0 9 8 4 1/1 1 G 8

BATH ORIGINAL

. " ο -

Value below, soferss the Zusaraiaenführungsverhältnis-W ¹ / W and the bed length werden- kept constant 1 when the bed is bent sufficiently in the longitudinal direction, as shown in Figure 5, then the guide surface has substantially no irregular concave curvatures in the longitudinal direction of the bed , but in the transverse direction there are such irregular concave curvatures, as can be seen particularly in FIG. 7b. However, since the web of material is drawn in the longitudinal direction, it can enter the grooves of the guide surface without difficulty, in spite of the fact that there are such irregular curvatures in the transverse direction of the bed.

Figure 1 shows how a U-shaped according to the invention guide bed 30 as a merging device in a machine for the Manufacture of corrugated cardboard is built in, the sheet of material 331 which is to be corrugated, provided on a roll © 34- which is rotatably mounted on a suitable device. The paper web 33 runs from the hollow 34 over the guide rollers 35 $ 36 and 37 »and is then guided to the entry end 3Ί of the bed mentioned above. The web of material 33 is held firmly by tension against the guide surface of the bed and gradually takes on the surface shape of the Betts until they finally have the final shape at the exit., end 32 of bed receives »The corrugation of bed 33 is preferred regulated by a pair of regulating rollers 3 & and 39, each being grooved in such a way that it conforms to the final shape of the corrugated material made from the Exit end 32 of bed 30 comes out corresponds to · The Corrugated web 33 is then on one side with a Cover sheet 40 provided, which is guided by the Bolle 41 over guide rollers 42, 43 and 44 and on which by © ine Appropriate application device 45 applied an adhesive will. The two orbits will cross the Eollaa 46 and 47

009841/1168

BATH ORIGINAL

compressed, the roller 47 being provided with grooves corresponding to the corrugation of the material web. Zivischen the rollers 48 and 49 on these l ^f eU.e obtained single-faced paperboard is provided with a vc-li ^ x mi surfaces "layer, subtracting the übor of the hell ^ C idler rollers 51 and 52 and by means of a Klebatoffaufbringvorrichtung 55 is coated with glue. As can be seen at 55, the web 55 is preferably treated with steam or another suitable substance at the entry y \ of the bed 30 in order to improve the plasticity of the web. A resin material can also be applied at the point P mentioned, which supports the fixing of the corrugation of the material web.

The cardboard laminated on both sides, which is made from rolls 48 and 49 exits, goes to a usual dryer like him is indicated at 54.

The figures 1? to 21 aeigen examples of different pressure devices that can be used in combination with the guide bed according to the invention? can be used. Figure I7. Figure 3 shows an arrangement in which multiple endless belts are used to hold the web of material in place. The bands, of which only the tape is to be _t ropes 60 guided over rollers 61 to 64 and through the grooves the Wellimgen of the bed. These tapes can durcfc a continuous web of an elastic material, vie ^ sB Gu mI be replaced ₁ *, velche between the inlet and DECS AusSrittsendö of the bed extends, wherein the Gutiüai ^ oraugswolae aine so high Slastizität that it is Si -Tt: · - ·; matches the surface shape of the bed, so that the material to be moved securely conforms to the contours of the guide surface. follows.

0 Q 3 8 ύ M "M t-: B

BATH ORIGINAL

FIG. 18 shows another web stop arrangement * in the a plurality of bolts 65 in place of the straps 60 of FIG 17 can be used, with this hollen rotatable on a Axis are arranged in the transverse direction of the bed extends, and inobei the position of the axes is such that the roles cooperate with the management surface.

In Fig. 19 is a second guide bed 66 which is a Has surface shape corresponding to that of the first guide bed 50, arranged above the first bed, wherein a suitable distance is provided between the two beds so that the material web 30 can be passed through. Figure 20 shows a combination with an air blowing device 6? » which is opposite the outer surface of the Guide beds are arranged and which a variety of Has air outlets 68 which the material web 33 against blow the guide surface of the bed. The air can be humidified beforehand so that the plasticity of the paper web 33 is increased.

Figure 21 shows an example in which the bed 30 with a A series of air passages 69 is provided through which compressed air is blown from below to form a film of air between the paper web and the guide surface to create, whereby the friction is reduced

Figures 8 to 10 show other arrangements of guide beds according to the invention, with several beds one behind the other be used. Between two neighboring guide. beds 30 are provided with rollers 70 and 71 that adjust coupled with suitable drive units (not shown) and are designed in such a way that the position and the corrugations of the web of material running between them are set

0098A1 / 1 1 68

BATH ORIGINAL

can be. In the case of the rollers 70 '>71' in FIGS. 9 and 10, the idle rollers which serve to deflect the material balm 53 are tied up. The rollers 4-ß and 4-9 also serve to curcigulate the final curl if the web has irregularly corrugated parts. The body of the bed can have different shapes according to the available work space, such as ep. in l ^? ig. 11 is shown.

The guide bed 30 is held in place and is made of a ψ hard, non-deformable material * The guide surface of the bed can be coated with a substance to reduce the friction between the material web and the spray. ⁱ ungs whether to reduce area. This substance depends on the dex skin of the sheet of material used. Of course, an isolated substance can also be applied to the side of the web that touches the guide surface of the bed.

Figure 22 shows an arrangement in which several beds one behind the other are arranged so that a horizontal wavy line is formed, the length of the beds verfe to the extent is shortened as web $ 3 is merged to a smaller width will. The material web 33 assumes an increasingly corrugated shape, which has a larger amplitude and a smaller one Has period while they are on the Führuugsfläche a , joden running five bed sections. The web 33 becomes tight held against the bottom of the grooves of the] guide surface, and with the help of thick wires or pins 74j which are extend between two resilient retaining devices 73, the are shown in Figure 23 in enlarged form. The holding devices 73 have an ann 75 »who with a suitable one Deck equipment, wio a.B. an air cylinder 76 (Figure 23) connected, with the arm at the force-exerting end with

0 0 9 8 Λ Ί / 1168

BAO ORIGINAL

a wire 77 is provided * The way in which the web is pressed onto the bottom of the hats can be seen in FIG

FIGS. 13 ″ to 16 show another type of production of ribs for the corrugations of the guide surface. FIG. 13 shows an example of a guide command that is made by pressing. Figures 14 and 15 show Hips, which are formed by strips 90 and 91, which have different cross-sections and are firmly attached to the Guide surface of the bed are anchored.

Figure 16 shows an example in which the entry end and the exit ends are offset from each other by 90 ° * This arrangement does not, however, change the fact »- that the inlet and the outlet are arranged perpendicular to the running direction of the material web. Furthermore, the entry and transverse exit ends 31 and 32 of the body may be curved, although they are shown in flat form in the accompanying drawings.

Figures 25 and 26 show schematically a corrugating machine, in which two opposing pairs of guide beds 30 are used, each pair being disposed with the exit ends 32 side by side and with these Ends are aligned with each other »paper webs that are to be corrugated are provided on two shafts 78 and 79, each shaft carrying two pods of web material, which are arranged close to each other »These paper webs are driven by rollers 38 and 39 over idling © guide rollers 80, 81 and 82 to 84 and then around preheating units 85 and 86 drawn. Steam or any other material can be on

■ · ■ 009841/1168

BADORiQlNAl.

the web (as it is sloped at £ 7) can be applied to macli-ta the web material JO softly. In this bed arrangement there is a row of rotatable elements. EB provided that grin from a rod or wire 89? The Bahijia & uösdal is pressed against the hat ca of the bed by dluse turning learners. Instead of the rotatable elements, flexible rollers can be used.

FIG. 27 shows a finished corrugated board made by the machine of FIGS. 25 and 26 with the corrugated webs overlapping one another, as seen at 72 .

Although in the explanation of a paper web was used, but it is clear j dal? other materials can also be used and that many other modifications and changes can be made in the device without departing from the scope of the invention.

00 9841/1168

BAO ORIGINAL

Claims (1)

Claims faj machine for producing a lengthwise corrugation in a "sheet-like path, characterized in that it is a hard, elongated and curved Has guide bed (30) for bringing the web together, which bed has an inlet end (31) and an outlet end (32) which is perpendicular to the direction of travel of the web are arranged with a series of corrugations between the exit end and the entry end of the bed which converge towards the exit end and gradually increase in amplitude and period become smaller, the corrugations at the exit end of the bed being essentially the final corrugation shape of the Web correspond and being the surface of the bed which having corrugations is shaped such that the longitudinal surface lengths of the sheet material are measured At a certain surface distance from the long side of the bed, and the transverse corrugated surface lengths, measured at a certain distance from the entrance or Exit end of the bed, are substantially constant or substantially constant in any part of the bed. 2. machine according to claim 1, characterized by lehnet, that either the inlet end or the outlet end of the guide bed is arranged flat on a plane, which runs transversely to the longitudinal plane of the bed. 009841/1168 BAD ORiQiNAL 3 · Γ "& 3chine according to claim 1, characterized ge k e: α η aeich ■ η e I " that the guide surface of the bed is essentially arranged b.ox \ i £ mtal " 4. Hsschine according to claim 1, characterized in that gekea η ζ β ie Ii net _? that the guide surface of the bed is curved; is. 5 «Ms 3chine according to . 6 <· Ils jchine et characterized n gekennaeich according to claim 1 _5, that the hip of the corrugated lungs lining ei "exist aufveiuen the r itweder about a triangular or approximately a rectangular m cross section * wherein dio ötre.i fen I'Est on the upper surface of the bed is anchored 7 «M? Jchine according to claim 6, characterized e g Ir. e .ι η seich η et 5 that the series of .Trifc ^ ungs Betten end in the end ange-T-ir- <:; are and that iio3lenpaare daaViiachenliegon, which look like this- ■>"': s: l ~: ..-... ^: , let eic lead the rolled path. u and those through cie ■" \ -d ::.: rg - ^: 'Lying guide surface regulate the undulation caused * C. Machine according to claim G, dacnrcli ge Ji. e η η ζ eic Ii pet that the .liei.he of Kiixemissiibetten side are on the side. BATH ORIGINAL 0098A1 / 116H