DE2946276A1 - METHOD AND DEVICE FOR CLOSING FOLDING BOXES WITH PLUG CLOSURE - Google Patents

Description

2946278

VM 669
November 12, 1979 Pf / vo

Robert Bosch GmbH, 7000 Stuttgart 1

Method and device for closing folding boxes with a plug-in closure

State of the art

Folding boxes are closed with a snap lock especially with switched cartoning machines, generally with the help of preferably three closing tools, which are adjustably mounted on a common reciprocating carrier. In the direction of the folding boxes seen, the first locking tool is used to fold the insert tongues, the second to insert the same and the third closing tool for pressing the tuck-in flaps. Good for folding boxes Quality that is properly fed to the closing station is obtained with the help of these closing tools good folding box closures. trouble

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however, occur with folding boxes of inferior quality, especially with JaIt shaft β In, the warped cover flaps or · have insertion tongues. Such warped cover flaps or insert tongues can either already during the production of the folding box blank, for example due to inaccurate creasing or pre-folding, or caused by friction during the forward movement of the folding box within the transport chain. Furthermore, a Warping of the cover flaps or the insert tongues also due to those arranged in the movement area of the folding boxes Guide switches or the like. Are caused. A major influencing factor, however, is above all the cardboard quality, not least because of the increasing shortage of energy and raw materials in recent years has become. By inclining the second locking tool in particular, which prevents the insertion of the insert tongue concerned, it should be achieved that even folding boxes with warped top flaps or insert tongues can be processed. It has been shown, however, that this measure is not sufficient, it is desirable to have a closure device whose direction of movement is below one certain angle to the usual vertical direction of movement can be set. (The previously used capping station is for example in a brochure of the company Hofliger + Karg "Cartoning machine Cartonetta 75" shown and described).

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Advantages of the invention

By the method according to the invention with the characteristic Features of the main anaprucha result from everything the advantage of a safe way of working, which enables the perfect closing of τοη folding boxes with warped top flaps and insert tongues guaranteed. The device for performing the method is characterized in addition to a simple structure due to easy adjustability and handling, so that there are only minor requirements The operator results in · By adjusting the closing tools on the part that can also be created Trager there are adjustment options that can be adapted to all raltshachtel conditions.

The hatreds listed in the further subclaims are advantageous further developments and improvements. wrestling of the device according to the invention possible.

drawing

An exemplary embodiment of a device for performing the method according to the invention is shown schematically in ^{two figures in the drawing "nft" w <} 1 τοη and explained in more detail in the following description. 1 shows a top view of the device according to the invention, FIG. 2 shows a section along the line II-II in FIG. 1.

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for the

How ait fig. 1 scheaatiaeh are old boxes 1 ait HiIXe τοη Hitnehaern 2 one not shown Chain transport in the bow tie of the arrow 3 transported. They haven't already been on one valley either Gate direction shown and should now be closed for further transport, i.e. the insertion tongue 4- of the Becklasehe 5 aofi in the folding box 1 be inserted. Basu serve Terschliefiverkseuge 6, 7 and 8, which are attached to a carrier 9. The carrier 9 is, as especially Hg. 2 IiSt recognize, old help one Screw 10 attached to a slide 11 adjustable, Luhrungseleaente 12 allow the to and fro Carriage 11. To generate the reciprocating motion is a crankshaft drive 13, which is in an aa machine frame 14- or the like. Attached traverse 15 is mounted. The crank mechanism 13 is old over a coat, not shown dea rabbit drive in connection. You Vunrungseleaente 12 are mounted in a swivel body 16, the adttels a Screw 17 "of the machine frame 14 - fastened so that it can pivot .is. Through this approach, the management team is widened 12, among other things, the angle O ^ (Fig. 1) can be created. In order to there is the possibility of changing the direction of movement of the

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Carriage 11 - based on the direction of movement, which is usually perpendicular to the direction of movement of the folding box -Change as required. The size of the change depends on the degree of Torxuges of the top flap 5 of the folding box 1. To achieve that the closing tools 6, 7 and 8 are vertical even when the guide elements 12 are inclined are guided against the folding boxes 1, the carrier 9 is in a corresponding manner on the carriage 11 r created. These are shown in particular in FIG ■ With the help of this device distorted cover flaps 5 brought back into the correct position, so that properly closed boxes 1 result. To the The closing tools can grasp and safely insert the insertion tongue 4 into the folding box 1 6 and 7 have a nose-shaped projection 18, 18 *.

The way it works is as follows:

As already mentioned, the folding boxes 1 are fastened to transport chains 22 with the aid of drivers 2 are moved forward in cycles. Vie Fig. 1 shows, these are folding boxes 1 with warped or offset cover flaps 5, which normally cannot be properly closed. By

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the oblique forward movement of the carriage 11 and thus the closing tools 6, 7 and 8, however already in the first station, in which the insertion tongue 4 is bent with the aid of the locking tool 6 is, a straightening of the push-in flap 5 is carried out. The next station is pushed in the insertion tongue 4- in the folding box 1 with the help of the tool 7 »the cover flap 5 is in the process the straightened position held or readjusted, which in particular by the nose-shaped projection 18 * is supported. Hit the help of the closing device eye 8, the cover flap 5 or the insertion tongue is then reprinted again in the third station 4-. Depending on the quality of the folding boxes 1 to be developed, however, in general the pressing of the cover flap 5 and thus the closing tool 8 can be dispensed with, since the ▼ omplete pressing in of the insertion tongue 4 already with Help of the closing tool 7 takes place.

The closing tool 8 was required with the closing devices used up to now, because with the closing tool 7 a complete insertion of the insertion tongue 4 was not possible due to its inclination.

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Of course, the device according to the invention When processing folding boxes with a snap lock on both sides, also on the opposite one Side of the device shown in Fig. 1 be arranged · It is advantageous that the direction of movement of the carriage 11 - based on the perpendicular direction of movement - is rotatable to both sides, since the cover flaps 5 be warped both against the folding box running direction and in the folding box running direction can. This occurs especially with folding boxes with an offset plug closure. These are folding boxes * with the opposite insert tongues Ί · pushed into the folding box at the top or bottom will.

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Claims (6)

VM 669
11/12/1979 Pf / το Robert Bosch GmbH, 7000 Stuttgart 1 Expectations 1 .J Procedure for closing folding boxes with Plug-in closure, in particular folding boxes in which the cover flaps or insert tongues are warped, thereby characterized in that before or when the insertion tongue is pushed into the folding box, a straightening of the Cover flap is carried out. 2. Device for performing the method according to claim 1 for closing folding boxes with Plug-in closure, especially in switched cartoning machines, with the help of reciprocating, Closing tools attached to a common carrier for edging the insert tongue and then Inserting the same into the folding box, characterized in that the carrier (9) for the closing tools (6, 7, 8) on a pivotably arranged and designed guide elements (12) sliding carriage (11) is attached. 1 30022/0222 - 2 - TM 669 3. Device according spoke 2, characterized in that the guide elements (12) in a swivel body (16) are attached, which is pivotably arranged on the Maachi nengeatell (14). 4. Device according to claims 2 and 3 »characterized in that that for the reciprocating movement of the carriage (11) on the guide elements (12) a crank mechanism (13) is seen. 5. Gate direction according to one or more of the claims 2-4, characterized in that the carrier (9) is fastened on the slide (11) so as to be able to be created. 6. Device according to one or more of the claims 2-5 * characterized in that the closing tools (6, 7) have a nose-shaped projection (18). 130022/0222