DE7123640U - DEVICE FOR LONGITUDINAL SLITTING AND CUTTING OF CORRUGATED CARDBOARD SHEETS - Google Patents

Description

ADDRESS FOR SERVICE: HAMBURG 36 NEW WALL 41

TEL. 3 67428 AND 364113

IELECB. NEGATIVE HAMBURG

MUNICH 15 MOZARTSTR. 23

_ _,,. TEL.338O38O

General Corrugated Machinery

24 L u b e c k -

TELEOH. NEGEJUPATENT MÜSCHBli \

Hamburg. July 29, 1971
Box 1981

Device for longitudinal slitting and cutting
of "corrugated cardboard webs

ller-shaped knives, which with corresponding Kesserträgera

The knives, which work as upper and lower knives,
must hieyb-si to achieve a * perfect cutting

The sample relates to a device for longitudinal slitting I.

and cutting of corrugated cardboard sheets. !

Corrugated cardboard is cut in wide strips, currently up to 2.65 m wide, in corrugated cardboard production plants according to the later production dimensions, first lengthways and then crosswise. \

I; At present it is common to use the wide web with rotating tel- |

are attached to a pair of knife shafts, in. the narrower |

I cut webs. The cut is made in the J type of scissors cut, so that the knives penetrate from both sides f through the web. f

"lie exactly flat against each other and run smoothly. In addition, there must be a certain contact pressure on the knife cutting surfaces. These cutting conditions require a very precise, careful adjustment of the knives, which is very time-consuming with manual adjustment is and with automatic setting requires a great deal of mechanical and electronic effort, since the set Cutting tools are present both above and below the web.

The pattern set itself the task of simplifying the adjustment of the longitudinal slitting and cutting tools.

According to the present invention, the object is achieved in that the cut can be carried out by only one slim, rotatably driven knife, which is cut into a transversely running knife

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Table dips and its largest diameter with small Clearance from that edge of the box recess sntferni: - is paintable, which is in the direction of the incoming "Sellpappenbahn is seen at the rear.

The slim knife with a large advance dips into the recess of the box, but only approaches that edge of the box

• *

recess, which is at the rear, seen in the direction of the incoming corrugated cardboard web, except for a very small distance, which, on the one hand, ensures the longitudinal slitting and cutting of the entire thickness of the cardboard sheet, on the other hand but prevents damage to the outer circumference of the slim knife.

The knives themselves are non-rotatable on their drive shaft, but arranged axially adjustable, z. B. with the help of a tongue and groove connection.

In this way, both manual setting and the automation of the setting of such cutting devices is also significantly simplified. This is where the corrugated cardboard sheet flawlessly slit and cut across their entire thickness without the risk of crushing the corrugations of the corrugated cardboard sheet at the slit and cutting edge.

The sexton is further enhanced by having the direction The edge of the box recess located at the rear of the incoming corrugated cardboard web by means of an elastic Bar is reinforced in particular from plastic and / or rubber. In this way one obtains in the area of the slit cut a flawless and sufficiently strong abutment for the paper web to be slit and cut, without then

7123640 ii.ii.7i

there is a risk of damaging the knife "when there is." should strike in the area of this edge as a result of unusual circumstances.

A further improvement of the pattern results from that the recess of the box is connected via a line to a vacuum source. In this way the paper dust becomes grounded and the glue and paper residues that result from the slitting and cutting process, immediately at their place of origin vacuumed and removed.

Mustergeisäß is ge = in the running direction of the paper web see the front edge of the box recess a metal sheet that runs across the box and prevents entry the ¥ ellpappenbahn into the inside of the box is prevented.

In connection with the innovation, the an-order is also recommended special devices in connection with the accruing edge bumps.

In accordance with the sample, the accruing in each case are in a manner known per se Edge strips over the side adjustable breasts absorbable. These laterally adjustable nozzles are also connected to a holder that carries a support plate that an entry of the edge strips into the box recess

_ ■ * ■> _

the left in the direction of travel of the liellpappen web Cold prevents.

¥ Further improvements and appropriate refinements of the Pattern are explained using the "attached illustration, which the pattern schematically based on an execution example explained:

Fig. 1 shows a corrugated board cutting device in a reduced size Scale that embodies the pattern described.

Fig. 2 is a diagrammatic partial view of a pattern trained longitudinal slitting and cutting device on an enlarged scale.

In order to simplify the setting of the tools and to achieve a better service life of the knives, according to Fig. 2 the corrugated cardboard web 11 from one side with slender knives 2, which are smooth at the cutting edge or also saw-like can be jagged, fully cut through. The number of knives depends on the number of usable parts to be achieved. The web of corrugated cardboard 11 is supported by a box 3 on the opposite side. This box 3 belongs to the The side facing the knife has an opening 4 into which the knife is immersed. The to. the direction of travel of the corrugated cardboard web 11

712364011.11.71

rear edge 12 of the box 3 lsi; mix an elastic Groin 5 e.g. or plastic armored to avoid an injury to avoid the cutting edge.

The box 3 is exposed to a vacuum via a line 14, so that the liellpappenbann 11 lies flat;
S-fcaüb tmd the chips sucked off. 13m to prevent OEIS entering a new web -is sucked in the front edge in the Sasteä 3, located in the running direction seen on the front edge of the box 3, a suitably shaped baffle plate 6. This guide plate 6 extends over
the entire width of the box 3.

The edge strips 13 resulting from the division of the web into several sections are sucked off in a known manner via appropriately shaped, laterally adjustable nozzles 9. In order to prevent these marginal strips, which are often unstable per se, from being sucked into the box 3, the
Nozzles 9 a holder 8 attached, which a Sxützisch from z. B. spring plate carries. This support table is with
the nozzle laterally adjustable.

A support table 10 is also attached to the nozzle 9, in order to prevent damage to the running web 11 by the nozzle edge.

7123640ii.ii.71

SemäS Fig. 1 "is the iseJÜLpapTsenbahn In undepennxeia State of the knife devices 15,16 supplied «and leaves these ± a partiiaiiaiinen. In each cutting device 2, belongs to a plurality of parallel in the transverse direction of the ¥ ellpappenbahn longitudinal slot cutting knives arranged next to one another 2.

1 shows a further pair of grooves 17 in front of the AiifsehlitzHessem 2 and their last 3, which grooves the elliptical cardboard as well. Although ellpappenoahn takes place within the cutting device, but does not belong to the Hustergemaßen Rauiafona, the pair of grooves 17 is no longer discussed.

Are iia other, vie from the Fig. 1 shows two cutting means in the running direction of the ¥ ellpapperibahn arranged behind one another. "While the one cutting device, according to FIG. 1 the cutting device 16, is in operation and einwirlrfc on the ¥ ellpapperibahn, the other cutting device is out of operation, its I-5esser 2 and its pair of rollers 17 can now be set for further processing /earth.

Claims (1)

1,. Device for longitudinal slitting md Scimeiden von ¥ ellpappenoaimen, daöurcla gekersnzeicbnex that the cut can be made by a slim, rotatably attached knife (2), the in one-s transverse box recess (4) of one of the üfeHpappenT> ahn supporting! Tisclies immersed and its largest diameter with ^! There is a small amount of play away from the edge (12) of the branch recess, which is located at the rear when viewed in the direction of the incoming cardboard sheet (11). 2, Youichtung according to claim 1, characterized in that the edge (12) (rear edge) of the box recess that is at the rear, seen in the direction of the incoming ¥ ellpappenbahn (4) is bev / eJirted by means of an elastic strip (5), in particular made of plastic and / or rubber. 5. Apparatus according to claim 1 and / or 2, characterized in that that the recess (4) of the box (5) is connected to a vacuum source via a line (14) is. 4. Device according to one of claims 1 to 3, characterized in that in the running direction seen the front edge of the box recess (4) 7123640ii.li. 71 across the box {3) continuous guide plate £ 6} is arranged that prevents the corrugated cardboard web (11) from entering the interior of the box. 5. Device according to one of claims 1 to 4, characterized in that the au? well-known way 'each accruing edge strips over laterally adjustable [bare nozzles (9) can be sucked off, and that the laterally ver ^ adjustable nozzles are connected to a holder (8) which carries a support plate (7) which has an inlet of the Edge strip into the box recess (4) on the rear edge as seen in the running direction of the corrugated cardboard prevented. 6. Device according to one of claims 1 to 5, dadurca characterized in that the knife is serrated in a manner known per se. 712364011.11.71