DE1561510A1 - Method and device for the continuous production of rigid corrugated cardboard with crossed corrugations - Google Patents

Description

Patent attorneys

Dlpl.-lng.R.Boetzu. -ι c e-ι c 1 η

Dipl.-Ing. Lamprecht. I 0 D I 0 I U

Munich 22, Steinsdorfstr. 10

310-12.582P July 24, 1967

Ste DES FORGES ET ATELIERS 33U OHBOSOIi Paris 8 ^e (France)

'Process and device for continuous production of stiff corrugated pap-oe with crossed corrugations

The Srflndun ·? refers to a procedure and a washing machine for the continuous production of stiff Wellnaooe with crossed Corrugations.

n has already made leaves or jabs from stiff corrugated flap, inaem; .an two corrugations with normal corrugations by means of gluing, ie or blatten luit the same folding resistance, vtelcna folding directionunp; it may be

^r -5u serving purpose has been prepared to cut webs of normal corrugation oacioe according to a i-> i relation to the corrugations more or less oblique direction, which are provided with little jjeo / büatt .., unu to glue the two cut elements on top of each other ', their flashes / being crossed. This operation results in significant waste, and the sheets or flats with criss-cross corrugations have dimensions which are naturally limited in width and length

BATH ORIGINAL TT> Ti; (6).

i'ian has also suggested making cream straight from corrugated cardboard with im. Relation to the web edges of the diagonal divisions heart-shaped, who allow it, leaves with a-crossed vs position en aurch Place two strips on top of each other and glue them together.

The continuous production of iron tracks with sloping tfellun / -; s encountered great difficulties, i; ^;; mainly due to the sideways wandering of the i-apierbahn? · Ϊ́: Relationship to the Elffelewenten who are responsible for the manufacture. ■ c-er vvellur.- ' gen werenaet weraen.

Various solutions have been proposed, insoeBcv:.:. Cre, for example, cylinder oars with helical corrugations. o;, he a cylinder with right üiffelun °: en in; Together with the corresponding Hiffelun ^ s, which are in a movable, rough. Element attached sinu, with the cylinder axis an angle with the y / 'erychiebungsrichbung aes, eraden element biluer, or also ^ y linder pairs with inclined support, whose' /.

The proposed solutions were not included in the taken over, and as far as they are used to obtain WellCMi ^ ebahnen with sloping Wellunpen, these Jahhori could have only limited lengths, which in any case can be reduced by the Impossibility of the Speioherunp; of the orbits in Troiiimelform

The invention is based on the object of providing a remedy here and showing a way z \ x on which corrugated cardboard

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sheets or plates with crossed corrugations of any length can be produced '. .- "■ ';

According to the invention, this object is essentially achieved in that two webs of corrugated paDOe with inclined corrugations are made "by passing through 'an i-app track between two coupled corrugated cylinders with helical corrugations, each web being inserted between the two cylinders accordingly is, which forms a certain angle with the cylinder circumferences such that the deformation of the web in the cylinder corrugations of the corrugated cream is given a movement corresponding to a perpendicular to the circumferences Bichtung, and da °, the corrugated webs are each provided with a cover sheet before it connects by gluing the free vesors of their intersecting sloping corrugations.

The invention is now to be illustrated with reference to one in the drawing Embodiment are described. It demonstrate: , ;

-fci'ig. 1 is a sketch showing the deformation of a Fapp path in

represents the corrugations of the cylinders; the Flg. 2 and 3 are schematic representations in elevation and in FIG

Supervision of a Fappbahn in the course of the Wellungj Flg. k a schematic view of the formation of paperboard with

two layers of corrugated cardboard and crossed corrugations Figures 5 and 6 are top views of the formation of each of the two webs, which make a cardboard with crossed corrugations.

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In the sketch shown in FIG. 1, the straight line ZX denotes a corrugating cylinder generating line with helical corrugations; the straight line yy, which ^{corresponds to the 1} highest point of a ridge of the helical corrugation, forms an angle i> O with the generation line xx, which is an angle of inclination of the corrugations of an I-acr / track. A point A of the iapp path is guided in the course of the rotation of the cylinder in a plane zz perpendicular to the generation line x-ic.

According to an i. Feature of the invention, the cardboard web is under a; Angle ß brought to the corrugation cylinder, which is determined in relation to the plane zz.

The value of the angle ß is determined as follows:

An i-point 6 of a cardboard web which touches a flat corrugating cylinder which has a diameter corresponding to the ridge height of the corrugation would be introduced into the plane z'-z ', parallel to the plane zz, by rotating the cylinder. Taking into account that L is the length developed by a corrugation, following a direction perpendicular to yy, and that a is the step of the corrugation, one can determine an angle β such that by a displacement b = L - a des Point B, which results from the profile of the corrugation, this point comes to B ', which lies in the plane zz passing through point A, ie in a plane perpendicular to the axis of the cylinder. The sketch shows that the angle A on the one hand "a puncture of the

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of the angle OO of the inclination of the corrugations "and on the other hand des The profile and the step of the corrugations.

For a rotation of the adjustment cylinder corresponding to the step that results in the helical corrugations, point A shifts in plane zz, -to get to A ^v , and point B comes under the combined influence of eggs Rotation of the cylinder and the deformation of the Rappbahn in the corrugation of the cylinder according to A. This means that the corrugated PaDobahn is guided in a direction perpendicular to the axis of the cylinder.

The movement of the cardboard web forward to the cylinder is accompanied by a translation of the web parallel to the roll of the corrugations; for each point of web 3, this translation has the distance B ⁹ C. the tension imposed by the fact of this translation remains weak, since the corrugation zone under pressure in each corrugation remains less than a third of the total area of the web for corrugation, ie that the translation under pressure is limited to B ¹ C

3 ■■■■■■ remain.

In Fig. 2 there are two unified corrugating cylinders 1 and 2 shown, between which a v.latte cardboard web 3 enters, corresponding to a plane on the through the axes of the two Cylinder going plane is vertical; the corrugated cardboard rolls up around the lower cylinder 1. In front of the two cylinders is

■ '■■': "'■" ■■ - ■ .-' ■ - ■ E ^ u ORIGINAL · .. "_

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the smooth fapc path of at least one smooth cylinder 4 - leads, its axis in relation to that of the two Wellunus cylinders is inclined by the angle A indicated by the sketch Fi ς. 1 is determined.

Fig. 3 "· i ⁿ which the upper cylinder 2 does not ciara it shares: is showing how the web 3 i ^m point O the angle P + 9C ° with the ßerührunfcslinie E -ö'heounKte of the c- · ff eluncs ^ rate of the two cylinders forms, jjer ürsorune; the deformation of aer i-'apobahn for each of the wel luwen is so in, point C on the line Ü, and the form? proceeds along the line u . results from the fact is, aa ^'1 each v ^ RECOVERY aer ground-i- roll below the Ljnie E in Wendelforvi on the cylinder 1, iW>, Lu this purpose, a [''ührun-v S to the: \. > linder 1 an ^ eorunet, which opens the entrance to the upper cylinder 2-b, and with two wings 5a "is, which extend beyond the J3ertihrunß: siiri-Ve, pie uen tfellun -en through it rolling in spiral form auferle te Kriiurmun ?: is a function of i: egg: _uij: rswinkels the endel and lurchmessers the Wellungszvlinder; it remains weak and can therefore be through the choice of these variables to a value beiaen be renzt that varies as the flexibility of the paupe in front of the L'rocknumv.

Helical rolling up of the corrugations is also possible . ", ■ ewellterr ISahn, the cylinder 1 in the form of a path 3 'with inclines Corrugations' /.u leave.

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- 7 - ■ This path cannot be saved by rolling it up.

According to the invention, as described above, with sharpened corrugations are used directly to make Sheets or plates of any length; with crisscrossed corrugations in a machine fed with sheets of smooth cardboard »'

This machine is shown schematically in a view in FIG. .

~ A smooth cardboard web 3 &, which unwinds from a drum 6a, is guided by inclined rollers 4a and in the passage between the corrugating cylinders 2a and la. corrugated with helical "Elffeiungen". Likewise, a sheet of cardboard 3b, which unwinds from a drum, is guided through inclined rollers 4b and in the passage between the corrugation cylinders 2b and Ib: -;

Two · glue cylinders 7a and 7b, which are connected to the cylinders la and Ib cooperate to deliver glue to the ridges of the Corrugations. ■

A smooth cardboard web 8a, which is unreeled from a drum Qa , is guided by a roll lüa and the glued web 3 'is pressed against its exit from the corrugation cylinder la by a cylinder 11a reefing. Also, a blatte i ^J appbahn 8b, which unwinds from a drum \ 9b, 10b while being guided by a hell

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-a -

.by a cylinder lib against the glued web 3b ^? pressed.

The smooth tracks 8a and 8b shift according to one on the ^,! Jbene xx, which goes through the Wellunzsylinders la, 2a and Ib,? B, perpendicular direction, and the smooth .Sahnen 3a and 3b move according to one in ^{1 in} relation to this

Plane and angle. ß> inclined direction.

At their exit from the corrugated cylinders la ,? .A and Ib, 2b, the jogs 3 ^{at una} 3b ^v , each connected by exercise with the smooth tracks 8a and Gb, corresponding to a perpendicular direction on the plane: cx ^r ·, and x ^ are bonded by the liver cylinders 12a and 12b before they enter the printing cylinder ) 3 in such a way that they result in a composite path 3c in which the Uellün> ^v s cross, and are thereby at their crossings -unkten glued, whereby this web is covered on its two surfaces with sheet webs 8a and 8b. After passing between the guide cylinders 14, the balin 3c can be cut into sheets or laths of narrow length by means of scissors of any type (not shown), which can be easily stored.

foan manages so continuously, starting from four coils with a smooth rappe, leaves or i-slats .trappe with ge · * - crossed corrugations which have a significant Paltwiderstand which ^ ^r-1 Itwinkel the mö also _be; i; e.

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■ ■ ■ -3-

Modifying the embodiment described can aie Aus rieh buna; the guide cylinder of the corrugated ra; oobahn above the corrugation cylinder as i'imlction des ■ jchrit'Ses. The Hiffelun ^ en, the Dioke and the kind of usedo ^ a ^ ae be controllable, whereby these ■ Hegelun.fi; -, each special Case anifeoailt or continuously for the correct winding of the web ■ By means of an observation device of the possible deviation can be set »

BAD ORfG / MAL

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Claims (2)

-40 - payment by installments 1. Process for the continuous production of rigid corrugated cardboard with crossed divisions, marked ur ch because .. ^! two webs of w'elloa ^ oe rait schrei / en divisions are made by passing a.-ar-p web (3) between two coupled corrugation cylinders (1,2) with wenaelfö'rmi -: en corrugations, with each web between The two cylinders are introduced in a direction corresponding to the cylinder circumference forms a certain angle (p) in such a way that the deformation of the path in the Zyllnaerrif felun ■ en of the corrugated path gives a movement according to a direction perpendicular to the circumference , and there ", the corrugated bare teeth are each provided with a covering sheet before they are aurca glued together the free precursors of their intersecting inclined multifunctional lungs. 2. Machine for continuous adjustment - from stiff lielipaupe marked with lined corrugations according to Ans -'- ruch 1 on the one hand by two p; equal units for the formation of awei Cardboard sheets with sloping welluna: en (3a ', 3b'), with each unit from a tapered corrugation cylinder (la,? a or Ib,? b) with spiral-fined Rlff elun ^ s, at least one inclined guide cylinder (4a or 4b) for the web to be corrugated (3a or 3b) in front of the corrugation cylinders, a cylinder (7a or 7b) for BATH ORIGINAL 009840/0180 Gluing of the peaks of the waves of the web wound on one of the cylinders, a cylinder (11a or lib), for pressing a smooth web (8a or 8b), unwound in a direction perpendicular to the curling cylinders, onto the glued peaks and a glue cylinder ( 12a or 12b) for the remaining free Vororün ^ e of the corrugations of the corrugated web, and on the other hand by a pair of coupled cylinders 0-3 »13) to connect the two webs (3a ^; or Jb ^r ) on the glued projections of their crossing corrugations behind the Welluna's cylinders. ;. ; . - "". BAD QRtGiWAL 009840/0180