EP2239200A2 - Method for producing a packing box and packaging machine - Google Patents

Abstract

The method involves placing packaged goods on a base of a lower cardboard section (10). Two opposite side walls (17) are machine-folded from the lower section, where one of the side walls and one of two front walls (18) are adjacent to each other and merge into each other in corners in a materially integral manner. Two connection plates are bent down by a machine from a cover-cardboard section (5) and form inserting plates (9). The inserting plates are guided between the goods and the front walls such that the cover section is mechanically inserted into the lower section. An independent claim is also included for a packaging machine for producing a packing cardboard.

Description

The invention relates to a method for producing a packaging carton, and to a packaging machine for carrying out the method.

From practice, first, packaging boxes are known, which are folded from a single carton blank to a container having bottom, walls and lid, as for example, from wine cartons, moving boxes u. Like. Is known.

Secondly, packaging boxes are known from practice, which provide connection tabs on the cover which, for example, extend outwardly beyond the side and end walls of the remaining packaging carton and create a composite which prevents the loose lid from slipping. However, such loosely fitting lid are not well suited for a safe transport of the packaged goods and find more in packaging containers application that serve as a storage container and not as a transport container.

From the DE 197 12 787 A1 a generic method is known, according to which the lid is made separately from the remaining carton blank of the packaging carton. Insert tabs are angled relative to the actual lid surface and when the lid is placed on a lower carton blank formed into an open-topped container, the tuck-in tabs are inserted into the container. The device used for this purpose has a folding and plug-in station, on which from the lid cardboard blank the two downwardly bent tabs are formed, and then the lid is placed on the lower, shaped to the container carton blank, at the same time the tuck in the container be plugged in. The folding and insertion process is relatively time consuming, so that the performance of the device is economically disadvantageous limited.

The invention has for its object to provide a method for producing a packaging carton, which allows the most economical production of packaging cartons with a separate lid, and to provide a packaging machine for performing this method.

This object is achieved by a method with the method steps according to claim 1 and by a packaging machine having the features of claim 8.

In other words, the invention proposes first of all to provide a bottom part in the two-part packaging carton in which two side walls and two end walls are folded out of a single carton blank in addition to the actual bottom surface. The folding takes place in such a way that both a portion of a side wall and a portion of an end wall are created from the same material blank. In this way, a lower part of a packaging carton is created, in which viewed from the top view, four corners are provided, which are each seamless, in which therefore a uniformly merges a side wall into an end wall. In this way, a very rigid design of these corners of the packaging carton is possible and thus the stability of the final favors cardboard boxes. It is particularly economical in this case that the carton blank is folded around the packaged goods, that is, the packaged goods are placed on the bottom of the first carton blank before the folding operations of the carton lower part have been completed. In this way, a tedious filling of the cardboard lower part is avoided, in which, for example, the packaged goods would have to be pushed in from above into the cardboard lower part.

Finally, the packaging board is completed and closed by feeding the second box blank having the lid from above. The lid has two downwardly projecting tabs which are inserted between the packaged goods and the end walls of the cardboard lower part, so that now the carton is closed.

According to the proposal, the lid is inserted into the remaining packaging carton in at least two working steps. In a first step, the lid is first placed on the remaining packaging carton, with the two tucking tabs only partially immersed in the remaining packaging carton. Only in a second, downstream step, the lid is then brought to its final depth by the two tabs are inserted deeper into the rest of the packaging box, for example, until the lid rests on the goods, or until the lid leading plug-in tools on the upper edges of the pages or end walls of the remaining packaging carton. Through this two-part insertion of the lid, an automatic lid station can be divided into specialized sections, of which the first touches the lid. In this case, the packaging box together with the lid can be conveyed continuously in order to achieve a high packing performance, and this first section of the lid station need not be designed over the entire length, which would be required in the conveying direction of the carton not only to set up the lid during the feeding of the box, but also to bring it to its final depth. The fact that the folding operations of the carton blanks and the insertion of the lid are machined in the lower part of the carton, a high efficiency in the proposed method can be achieved, so that, for example, 50 to 60 cartons / min. can be completed in this way.

Advantageously, the two Einsteckvorgänge, namely the placement, so the provisional insertion, and the subsequent final insertion of the lid are carried out in the remaining packaging board by rotating components. These lower from above on the packaging board and cause the desired downward guidance of the lid. Due to the corresponding rotational speed of these rotating components, the system can be easily adapted to the desired packaging performance and synchronized with the respective feed rate of the remaining packaging carton.

Due to the rotational movement in which the insertion tools rotate about an axis which extends transversely to the feed direction of the packaging carton, different translational Geschwindingkeitenanteile the insertion tools in the feed direction of the packaging carton arise. Therefore, there is a relative movement between the respective plug-in tool and the packaging cardboard, in particular its cover. Advantageously, therefore, the lid is slidably held on such a plug-in tool, so that this relative movement can be easily performed without causing incorrect positioning of the lid on the rest of the packaging box.

Advantageously, it can be provided that the two insertion tabs of the lid taper downwards, ie one after Have decreasing width below so that they form at one or both lateral ends in each case an insertion bevel, which facilitate the insertion of the lid, in particular of these two insertion tabs in the lower carton.

Advantageously, one side wall of the lower carton blank can be folded upwardly with respect to the ground before the packaged goods are applied to the floor. In this way, a kind of stop for the packaged product is created, which facilitates the loading of the lower carton blank with the packaged goods. Advantageously, the first carton blank may have a portion which not only forms a side wall, but has the surface portions of both the side wall and at least one end wall. With the side wall still aligned, the end walls can first be set up by machine before the side wall is folded upwards in a machine direction relative to the floor. In this way, the design of the carton is made possible in ecologically and economically advantageous manner with as few glue seams.

Advantageously, an overlapping of the two end walls can be provided on one end face of the carton created from the lower carton blank, which overlaps at least a portion of its height, so that the two end walls can be connected to one another in the region of their overlap, for example by gluing together. The other end face, however, can advantageously have the largest possible open recess, so that the box is not only suitable as a packaging and transport container, but also directly to the presentation of the goods, so that the most economical handling of the product is made possible until sold.

Advantageously, the lid can be inserted without glue in the other packaging board. This is not only in economic terms and ecologically advantageous, but also allows a particularly economical handling of the container in the presentation of the goods: The lid can be easily removed from the rest of the packaging box without having to use a tool or leave without traces of ripping, so that the goods easily can be removed from the thus opened packaging box.

• So kann beispielsweise vorgesehen sein, dass der Deckeleinsetzer und der Deckelstecker relativ zu einer Fördereinrichtung höhenverstellbar sind, welche Fördereinrichtung den Kartonzuschnitt führt. Diese Relativverstellbarkeit kann durch eine Höhenverstellbarkeit entweder der Deckeleinsetzer und Deckelstecker erreicht werden, und / oder durch eine Höhenverstellbarkeit der Fördereinrichtung. Jedenfalls können Deckeleinsetzer und
• Deckelstecker somit in veränderlichem Abstand über der Fördereinrichtung angeordnet sein, so dass sie an unterschiedliche Höhen der herzustellenden Verpackungskartons anpassbar sind.

Advantageously, a high degree of adjustability or format flexibility in a proposed packaging machine can be achieved by being adaptable to the production of packaging cartons of different dimensions:

• For example, it may be provided that the lid inserter and the lid plug are height-adjustable relative to a conveyor, which conveyor guides the carton blank. This Relativverstellbarkeit can be achieved by a height adjustment of either the Deckeleinsetzer and cover plug, and / or by a height adjustment of the conveyor. In any case, lid inserter and
• Cover plug thus be arranged at a variable distance above the conveyor, so that they can be adapted to different heights of the packaging boxes to be produced.

In addition, it may be advantageously provided that the speed of the lid inserter and lid plug is adjustable on the one hand relative to the conveying speed of the conveyor, so that the lid station can be synchronized in different ways with the conveyor. For example, it can be provided to drive the lid inserter, the lid plug and the conveyor independently of each other, ie to provide different speeds in the drives of these components, or breaks in the drive one of these Provide components while another of these components continues to run. When changing over to another carton size carton blanks with now greater length than in the conveying direction can now be brought to the cover station by means of the conveyor, and lid inserters and cover plugs can each either pause or be driven at a slower speed if longer packaging cartons are to be produced and the carton blanks correspondingly have longer footprint dimensions than before.

Fig. 1

eine perspektivische Ansicht auf eine Deckelstation einer Verpackungsmaschine,

Fig. 2

mehrere fertig gefaltete untere Kartonzuschnitte, und mehrere Deckel-Kartonzuschnitte in unterschiedlichen Faltstadien, wobei die unteren und die Deckel- Kartonzuschnitte entsprechend dem Herstellungsab- lauf des Verpackungskartons in unterschiedlichen An- ordnungen relativ zueinander dargestellt sind, und zwar in einer auf die Rückseite der Verpackungskar- tons gerichteten perspektivischen Ansicht, und

Fig. 3

eine Darstellung ähnlich der von Fig. 2, jedoch in einer auf die Vorderseite der Verpackungskartons gerichte- ten perspektivischen Ansicht.

An embodiment of the invention will be explained in more detail with reference to the purely schematic Dartstellungen. It shows

Fig. 1

a perspective view of a cover station of a packaging machine,

Fig. 2

a plurality of finished folded bottom carton blanks, and a plurality of top carton blanks in different folding stages, wherein the bottom and top carton blanks are shown in different arrangements relative to each other according to the manufacturing process of the carton, in a rear side of the carton. tons directed perspective view, and

Fig. 3

a representation similar to that of Fig. 2 but in a perspective view directed towards the front of the packaging cartons.

In Fig. 1 a lid station is shown. The lid station 1 comprises a lid magazine 2, in which a stack of flat carton blanks is to be formed to the lid. The individual flat lid carton blanks pass into a blank former 3, for example with the aid of a rubberized roller, which pulls off the respective uppermost blanket carton blank from the stack of the lid magazine 2. In known per se Way, the lid carton blank is now inserted into a blank feed dog 4, for example in a conventional manner by means of a conveyor belt.

The blank conveyor 4 transports a lid carton blank 5 linearly, for example, always at the same height, the two front ends of the lid carton blank 5 projecting beyond the two side edges of the blank conveyor 4. They come against a Abwicklungsgestänge 6, which extends from a height above the blank conveyor 4 to a height below the blank conveyor 4, so that the laterally projecting ends of the lid carton blank 5 are angled downwards in their transport, so that the lid 5 gets a downwardly open U-shaped contour.

The lid inserter 7 has three arms 8, which are provided with vacuum cups, so that they can each hold a lid 5 on its underside at the end of the blank conveyor-conveyor 4 is a transfer of the molded cover 5 from the blank shaper 3 , The lid inserter 7 is rotatably mounted and rotates clockwise. The covered and hanging on the vacuum suction of his arms 8 lid 5 are thus brought down during the rotational movement of the height of the blank conveyor 4 and get with their conically downwardly tapering end faces, which are designed as Einstecklaschen 9, in lower Kartonzuschnite 10th , which are brought by means of a conveyor belt 11 for Deckeleinsetzer 7 and further transported.

The lid 5 is, when he leaves the lid inserter 7, only partially inserted into the lower carton blank 10. The final completion of the packaging carton is done in a downstream workstation, which is referred to as cover plug 12. Also, the cover plug 12 has arms which are designed with the help of flat plates as Andruckpaddel 14, characterized in that the cover plug 12 is arranged lower than the Deckeleinsetzer 7, it leads in its circular motion the Andruckpaddel 14 down to a height which ensures that the cover 5 completely in the lower carton blank 10 are inserted.

Both in the case of the lid inserter 7 and in the lid plug 12, a circulating toothed belt 15 ensures that the arms 8 or pressure paddles 14 always remain aligned horizontally, while otherwise a rotating holder 16 causes a circular movement about the central axis of the lid inserter 7 or of the Lid plug 12 executes.

In the central area near the central axis of the lid inserter 7 is an off Fig. 1 not visible cam or link plate provided. It ensures that during the circular movement of the holder 16, a pneumatic vacuum line extending to the lid inserter 7 is selectively brought into operative connection with a pneumatic line section or separated from this line section, which runs in each case to a vacuum suction device on each of the arms 8. That the cover 5, when they are passed from the blank shaper 3 to the Deckeleinsetzer 7, are securely held with the help of the vacuum suction on the Deckeleinsetzer 7, but that the vacuum suction is then switched ineffective, if the arm concerned 8 the lid 5 with its two Einstecklaschen. 9 has introduced into a lower carton blank 10 and the arm in question then moves on the basis of the circular movement of the holder 16 and is to be separated from the cover 5. By this with the aid of a cam disc or cam controlled vacuum actuation of the vacuum suction, which is effective only on a part of the circular movement of the arms 8, on the one hand ensures that the detected lid are desirably released by the Deckeleinsetzer 7 at the given time, and secondly becomes the required vacuum suction power to be installed is reduced in an economically advantageous manner by virtue of the fact that the arms 8 are separated from the vacuum on the portion of their circular movement on which they are not provided with a cover 5.

The rotational speed of the lid inserter 7 and the lid plug 12 is controlled such that the arms 8 have the same horizontal speed as the conveyor belt 11, and also the Andruckpaddel 14 have the same horizontal speed. While the arms 8 must be precisely synchronized in order to ensure the correct insertion of a cover 5 or its Einstecklaschen 9 in a lower carton blank 10, relative movements between the Andruckpaddeln 14 and acted upon by them lids 5 are relatively less problematic. However, an exact synchronization of the lid plug 12 and its Andruckpaddel 14 with the horizontal speed of the conveyor belt 11 is required for the reason that the distances of the lower carton blanks 10 are fixed on the conveyor belt 11 and must be ensured that each one Andruckpaddel 14 on the Cover 5 of a brought up on the conveyor belt 11 packaging carton must meet.

As already described, the cover plug 12 is arranged lower than the Deckeleinsetzer 7. The cover plug 12 is also mounted vertically movable and fixable at different heights, so that its final height and thus the height of the Andruckpaddel 14 is adjustable in its lowest position and the height of the lower carton blank 10 or to the desired height, in which the lid 5 should be finally, can be adjusted.

Fig. 2 shows in a line of sight similar to that Fig. 1 the stack of lid cardboard blanks 5 located in the lid magazine 2. These stacks are from bottom to top tracked when each of the top cover cardboard blank 5 is removed from such a stack. In the area of the blank former 3, it can be seen how the tuck-in tabs 9 are gradually bent away from the initially flat top carton blank 5 and thus the final lid 5 is formed. Subsequently, this lid 5 is guided in the region of the lid insert 7 on a circular path downwards and thereby inserted into a lower carton blank 10. The lower carton blanks 10 are shown here from the back of the final packaging carton forth: There are two side walls 17 can be seen and two rear end walls 18th

In the region of the cover plug 12 it is shown how the cover 5, which is initially partially inserted into the lower cardboard blank 10, is finally inserted into the desired height, so that finally, in Fig. 2 shown on the left, a finished packaging box 19 is present.

In Fig. 2 the lid magazine 2, the blank shaper 3, the lid inserter 7 and the lid plug 12 are not shown, however, the corresponding reference numerals in the Fig. 2 in order to indicate in which area of the illustrated production sequence the corresponding stations of the packaging machine are provided.

Fig. 3 shows the same situation as Fig. 2 , however, seen from the other direction on the packaging boxes 19: The lid magazine 2 is located in Fig. 3 It can be seen that the two front end walls 18 extend only over a small part of the front side of the packaging box 19 so that a view of the product remains free, for example on bottles, which are provided in the packaging box 19. These bottles may advantageously already have been placed on the lower carton blank 10 before the lower carton blank 10 has been placed in its final, has been folded from the representations apparent form.

The cover 5 have two holes 20, which serve to remove the cover 5 without tools and in no time, so with an uncomplicated handle, from the packaging box 19, so that then the lidless packaging cardboard, so the lower carton blank 10, together the goods contained in a sales room for presentation and sale of the goods is suitable. The tedious unpacking of the goods is therefore limited to the quick and easy removal of the lid 5.

Claims (12)

A method of making a packaging carton using a first, lower carton blank (10) forming a floor upon which the packaged article rests, and four walls, two of which are referred to as side walls (7) and two as end walls (18) , a second carton blank (5) is used, which forms a cover with the cover surface and with two connecting straps,
the first carton blank (10) is conveyed on a transport path,
the packaged goods are placed on the bottom of the lower carton blank (10),
from the lower carton blank (10) two opposite side walls (17) and end walls (18) are folded by machine,
such that a carton is created which has four corners in plan view, wherein in each corner a side wall (17) and an end wall (18) adjoin one another,
wherein from the lid carton blank (5) the two connecting straps are angled downwards relative to the remaining cover surface and form insertion tabs (9),
and then the lid (5) is mechanically inserted from above into the lower carton blank (10) by the tuck-in tabs (9) between the packaged product and the end walls (18) are guided,
characterized,
that the cover (5) is inserted in at least two steps in the lower carton blank (10),
wherein in a first step, first the lid (5) is placed on the lower carton blank (10) by the two Einstecklaschen (9) over only a portion of their height in the lower carton blank (10) are inserted
and wherein in a subsequent step, the cover (5) is brought to its final depth by the two push-in tabs (9) are inserted deeper into the lower carton blank (10). A method according to claim 1, characterized in that the lid (5) is inserted by rotating components which rotate about a transversely to the transport direction of the lower carton blank (10) aligned axis and always remain aligned. A method according to claim 1 or 2, characterized in that the one side wall (17) is folded upwards relative to the bottom before the packaged goods are brought to the ground. Method according to one of the preceding claims, characterized in that the lower cardboard blank (10) has a portion which has both the surface portions of a side wall (17) and at least one end wall (18),
wherein, with the side wall (17) still aligned, the end walls (18) are first set up by machine before the side wall (17) is folded upwardly in a machine direction with respect to the ground. Method according to one of the preceding claims, characterized in that an overlap of the two end walls (18) over at least a portion of their height is created on one end face, wherein the two end walls (18) are glued together in the region of their overlap. Method according to one of the preceding claims, characterized in that the cover (5) without glue in the lower carton blank (10) is inserted. Method according to one of the preceding claims, characterized in that the two insertion tabs (9) of the cover (5) have a decreasing width downwards. Packaging machine for carrying out the method according to one of the preceding claims, characterized by
a lid station (1),
which has a blank former (3) for machine bending of the two insertion tabs (9) relative to the middle part of the lid (5),
and a lid inserter (7) which mechanically guides the lid (5) into the lower carton blank (10) of the packaging carton (19) to a first insertion depth, and a lid plug (12) which mechanically up to a lid (5) final insertion depth into the lower carton blank (10),
the lid inserter (7) having horizontally aligned arms (8) each extending over a lid (5) and holding the lid (5) on its underside,
the arms (8) being fixed to a rotating holder (16) rotating about an axis transverse to the transport direction of the lower carton blank (10),
and wherein the arms (8) on the holder (16) are rotatably mounted on a holding axis, such that they perform together with the holder (16) a circular movement, during which they always remain lying aligned. Packaging machine according to claim 8, characterized in that
that the cover plug (12) lying aligned Andruckpaddel (14) which on the lid (5) extend,
the pressure paddles (14) being attached to a rotating holder (16) which rotates about an axis transverse to the transport direction of the lower carton blank (10),
and wherein the Andruckpaddel (14) are rotatably mounted on the holder (16) on a holding axis, such that they perform together with the holder (16) a circular movement, during which they always remain aligned lying. Packaging machine according to claim 8 or 9, characterized
in that the cover inserter (7) is provided with a suction device, such that the covers (5) are held suspended on the cover inserter (7),
wherein the suction device is automatically cyclically activated and deactivated, such that it is activated when a cover (5) from the blank former (3) coming into the detection range of the Deckeleinsetzers (7) passes, and that it is automatically deactivated when the lid ( 5) is guided by means of the lid inserter (7) up to the first insertion depth in the lower carton blank (10). Packaging machine according to one of claims 8 to 10, characterized
in that the cover inserter (7) and the cover plug (12) are height-adjustable relative to a conveying device guiding the cardboard blank (10), such that they can be adapted to packaging boxes to be produced at different heights. Packaging machine according to one of claims 8 to 11, characterized
in that the speed of the lid inserter (7) and of the lid plug (12) is adjustable relative to the conveying speed of a conveyor leading to the carton blank (10), such that it has different base dimensions customizable packaging cartons is customizable.

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