EP1400453A1 - Apparatus for withdrawing carton blanks from a magazine and forming them to boxes - Google Patents

Abstract

The machine for removing blanks (3) from a magazine (2) and erecting them into open cartons comprises an upper lever (10) with a gripper head (4) which is pivoted on the top of a second lever (7). A transport system transfers the blanks to an erecting unit comprising a ram (13) and a mold (12).

Description

Device for removing blanks from a Magazine, their formation into a box and their Transfer to a transport system

The invention relates to a device for removal of blanks from a magazine, their shaping too one box each and handing over the opened one Cardboard boxes in a transport system.

Devices for the removal of flat blanks and their transfer to a transport system have been around for a long time known, these known devices being suitable for this are to erect folding boxes so that they are on the side are open and by sliding the Products can be filled. If desired or due to the nature of the products the need consists of filling the folding boxes from above, they are known devices can not be used and not easy modifiable, the devices at the beginning mentioned type exacerbate the problems with format changes, since folding boxes usually open at the top cuboid are designed with a greater height than Width extension, so that especially when changing formats large changes in length are required. The Devices are therefore so with regard to the pace of work designed that the maximum possible folding box size can be processed, but with smaller ones Folding box sizes the pace of work and thus the Processing capacity is unnecessarily limited.

The invention has for its object a device of the type mentioned in such a way that the Format change is simplified with the possibility Cartons below the maximum carton size with to process increased performance.

This task is at the beginning of the device mentioned type in that a first lever arm is provided with a substantially perpendicular to Direction of conveyance oriented first pivot axis to which by far a second, parallel pivot axis for one second lever arm is arranged, the gripping head carries that on the the magazine shaft with respect to the first Swing axis opposite side one height-adjustable clipboard is arranged with a Transport unit for the transfer of the blank one for the purpose of molding with a stamp interacting die above the transport system.

This device has the advantage that the Stretching out after the flat blanks have been removed the magazine right down to the clipboard Cutting size can be matched, two Paths are to be considered, namely on the one hand Transport of the blank in the horizontal direction and the Transport in the vertical direction, depending on the height of the shaped boxes depends on how far this is from including the transport system with its top edge Side tab extends upwards as this is for the Positioning the die is crucial. With the Invention, it is possible for large cut formats first lever arm by a relatively small angle of rotation pivot, the second lever arm being used to transfer the blank to the clipboard, in which the transport unit the further transport takes over. The first can be used for smaller cut formats Lever arm perform a larger angle of rotation, which causes the pivot point between the first lever arm and the second lever arm moved further down, i.e. the Cut smaller formats further towards the die moved and lowered at the same time. The second Lever arm in turn serves for a defined transfer of the To allow cutting to the clipboard in the the transport unit only a short cut Transport distance. In the die it is out the cardboard shaped blank in relation to the Transport system already the altitude that this needed to be transported away.

A preferred embodiment within the scope of the invention is characterized in that the first pivot axis and the second pivot axis each have a drive unit is assigned for the expedient servo drives are provided.

If the first pivot axis and the second pivot axis are oriented horizontally, it is simple possible to cut the flat blanks from the magazine remove it and then orient it horizontally to clipboard.

This then results in the possibility that the Transport unit of the clipboard by a Linear slide is formed because of the horizontal on the The clipboard is only translational must be transferred to the die without it additionally secure against tipping.

A very particularly preferred embodiment of the Invention is characterized in that the Magazine shaft and the first lever arm in the conveying direction are translationally adjustable, which increases the benefits result that a further parameter is available in Depends on the size of the blank from this optimize the distance to be covered.

A further increase in the working speed of the Device arises when the stamp by a Stamp drive is linearly adjustable in height and if the initial height of the stamp is freely adjustable, because of that is used that with smaller cardboard formats likewise the punch stroke can be kept smaller then go through the stamp in less time is.

The blank is then shaped into a cardboard box particularly simple and therefore preferably by that the through the transport unit on the die pushed on, flat blank for shaping by means of the Stamp can be pressed directly into the die a conveyor cell of the transport system, so that after Form the carton another device for transfer into the transport system is unnecessary. During transportation the cut from the clipboard over the die the blank is glued.

If the die is to be opened in the conveying direction, i.e. the Can release path in the conveying direction, then can turn The stroke for the stamp can be reduced because that for the later filling of the carton forcibly still open Side flap also not through the die must be pressed because the side flap after opening the matrix this with the Transport system can happen, what then that Closing the die for the next box followed.

The conveyor cells of the transport system are through at least one pushing and one leading Driver formed, which are adjustable against each other.

Fig. 1

eine perspektivische Darstellung der erfindungsgemäßen Vorrichtung kurz nach der Entnahme des im Magazin zu vorderst anstehenden Zuschnitts maximaler Größe,

Fig. 2

eine der Figur 1 entsprechende Darstellung zu einem späteren Zeitpunkt der Drehbewegung des ersten Hebelarmes,

Fig. 3

eine der Figur 1 entsprechende Darstellung zu einem gegenüber der Figur 2 nochmals späteren Zeitpunkt,

Fig. 4

eine Seitenansicht der Vorrichtung aus Figur 1 zum Zeitpunkt der Übergabe des flachen Zuschnitts an die Zwischenablage,

Fig. 5

eine der Figur 1 entsprechende Darstellung bei einem Zuschnitt minimaler Größer,

Fig. 6

eine der Figur 5 entsprechende Darstellung zu einem späteren Zeitpunkt der Drehbewegung des ersten Hebelarmes,

Fig. 7

eine der Figur 5 entsprechende Darstellung zu einem gegenüber der Figur 6 nochmals späteren Zeitpunkt,

Fig. 8

eine der Figur 4 entsprechende Darstellung bei der Übergabe eines Zuschnitts minimaler Größe an die Zwischenablage,

Fig. 9

eine perspektivische Darstellung der Aufrichtstation mit der Matrize und dem Stempel.

The invention is explained in more detail below using an exemplary embodiment shown in the drawing; show it:

Fig. 1

2 shows a perspective view of the device according to the invention shortly after the maximum size of the blank that is at the front in the magazine has been removed

Fig. 2

2 shows a representation corresponding to FIG. 1 at a later point in time of the rotary movement of the first lever arm,

Fig. 3

1 shows a representation corresponding to FIG. 1 at a later point in time compared to FIG. 2,

Fig. 4

2 shows a side view of the device from FIG. 1 at the time the flat blank is transferred to the clipboard,

Fig. 5

1 shows a representation corresponding to FIG. 1 with a cut of minimal sizes,

Fig. 6

5 shows a representation corresponding to FIG. 5 at a later point in time of the rotary movement of the first lever arm,

Fig. 7

5 shows a representation corresponding to FIG. 5 at a later time than in FIG. 6,

Fig. 8

4 shows a representation corresponding to FIG. 4 when a cut of minimal size is transferred to the clipboard,

Fig. 9

a perspective view of the erection station with the die and the stamp.

The device 1 shown in the drawing serves to this, from the flat arranged in a magazine 2 3 cut the foremost using a gripping head 4 to remove and this to a molding station 5 transferred, in which the blank 3 is shaped such that it is also open at the top facing side flap 6. For this purpose, the device 1 a first lever arm 7, which is horizontal and first oriented perpendicular to the conveying direction Has pivot axis 8, at a distance from the first Lever arm 7 a second, parallel pivot axis 9 for one Second lever arm 10 is arranged, the gripping head 4th carries, which usually has suction cups with which the Blank 3 can be sucked and secured. On the the magazine shaft 2 with respect to the first pivot axis 8 opposite side is a height adjustable Clipboard 11 arranged, one by one Has linear slide formed transport unit with the still flat blank 3 in the forming station 5 to a die 12 and one with the die 12 cooperating stamp 13 can be transferred. The Die 12 is above that in the drawing for better Overview arranged transport system, not shown, so that during the molding also a transfer into the transport system.

The stamp 13 in the forming station 5 is through a Stamp drive linearly adjustable in height, the The initial height of the stamp 13 is freely adjustable.

In operation of the device, the foremost in the Magazine 2 pending blank 3 through the gripping head 4 seized what a twist of the first Lever arm 7 connects about the first pivot axis 8, wherein the angle of rotation of the first lever arm 7 from the Cutting size depends, so that with large Cutting formats only require a small angle of rotation the blank 3 on the clipboard 11 put down what the second lever arm 10 is suitable is positioned (Fig. 1-4).

In the case of small cut formats, as shown in FIGS. 5 to 8 is shown, the first lever arm 7 leads one greater rotational movement due to which the hinge point of the second lever arm 10 on the first lever arm 7, that is the second pivot axis 9 further in the direction of Forming station 5 moves and lowers itself more. in the The transport unit must result in the clipboard 11 the still flat blank 3 only a shorter way transport and the stamp 13 to form the Blank 3 in the forming station 5 only has a short stroke execute, so that it stands out from larger Cropping formats saves time. A Time saving also results from the fact that through the transport unit pushed onto the die 12, flat blanks 3 for molding by means of the stamp 13 can be pressed directly into a through the die 12 Conveyor cell of the transport system through which the carton can also be transported out of the die 12, which can be opened so that the stroke of the Stamp 13 not the height extension of the side plate 6 must include.

Claims (9)

Device for removing blanks (3) from a magazine (2), forming them into a box and transferring the box opened upwards into a transport system, characterized in that a first lever arm (7) is provided with an essentially vertical one to the conveying direction oriented first pivot axis (8), at a distance from which a second parallel pivot axis (9) for a second lever arm (10) is arranged which carries a gripping head (4) that on the magazine shaft (2) with respect to the first On the opposite side of the pivot axis (8), a height-adjustable clipboard (11) is arranged with a transport unit for transferring the flat blank (3) to a die (12) which interacts with a punch (13) for the purpose of shaping above the transport system. Device according to claim 1, characterized in that a drive unit (14) is assigned to the first pivot axis (8) and the second pivot axis (9). Device according to claim 1 or 2, characterized in that the first pivot axis (8) and the second pivot axis (9) are oriented horizontally. Device according to one of claims 1 to 3, characterized in that the transport unit of the intermediate storage (11) is formed by a linear slide. Device according to one of claims 1 to 4, characterized in that the magazine (3) and the first lever arm (7) are translationally adjustable in the conveying direction. Device according to one of claims 1 to 5, characterized in that the height of the stamp (13) can be adjusted linearly by means of a stamp drive. Apparatus according to claim 6, characterized in that the initial height of the stamp (13) is freely adjustable. Device according to one of claims 1 to 7, characterized in that the flat blank (3) pushed by the transport unit onto the die (12) for molding by means of the stamp (13) can be pressed through the die (12) directly into a conveyor cell of the transport system. Apparatus according to claim 8, characterized in that the die (12) can be opened in the conveying direction.

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