EP1172316B1 - Device for magazine, for separating folding-boxes from a magazine duct and transferring them in a folding box transport system - Google Patents

Abstract

The machine for feeding folded cartons from a magazine to a transporter in a packing machine comprises a gripper with suction cups (3) which removes the front carton and pivots to transfer it to the transporter. The pivot is connected to a bent lever (11) which carries rollers (14, 15) at the ends of its arm. Each of these moves in a curved slot (16, 17) to control the movement of the gripper.

Description

The invention relates to a magazine device for Folding boxes for packaging machines, with one stacked upright next to each other Folding boxes leading magazine slot and one of the in Magazine shaft taking over the first folding box Gripper, in particular a suction head, on a Axis of rotation is arranged in a height adjustable axle bearing is mounted, and with a Rotation control curve for the forced control of the required overlay of translational and rotary movements of the gripper on its Cam track during the height adjustment of the axle bearing for the Handing over the folding boxes to Folding box transport system, being in the Rotation control cam coupled to the axis of rotation engages first cam roller.

Packaging machines are designed so that with them Folding boxes with different dimensions transported and fed to the goods to be packaged can, whereby it is necessary that the folding boxes transporting machine parts and in particular also the Magazine shaft to the different dimensions to be able to customize what with the keyword format changes referred to as. Through this through different Dimensions of the folding boxes caused format changes must also the movement of a device for the Removal of folding boxes from the magazine shaft of the Packaging machine to be adapted, for which it from the DE 43 14 696 C2 is known, which on a To adjust hypocycloid orbital gripper, and in such a way that the gripper moving in one plane to adapt to the box format in the movement plane is adjustable in a direction that matches the intended Straight line between the surface of the The opening of the manhole and the Plane includes an angle alpha, where further to the format adjustment it is also necessary Packaging machine or its magazine slot too adjust, by means of an oblique guide parallel to yourself in a direction perpendicular to the Bisector of the angle alpha in the plane of movement lies. This known magazine device has in the Practice has proven itself in the sense that it is very reliable works and a precise regulation for format adjustment exists like the gripper and the magazine shaft too are adjusted. The adjustment direction of the Magazinschachtes also causes a change of its altitude, what the connection of the Packaging machine difficult and at least one more complex storage for height adjustment of the Feeding device to the magazine shaft required.

A magazine device of the above type is known from the DE 37 27 034 A1 known, in which the grippers on a Axis of rotation are arranged by their off-axis Positioning on a rotating disc at one Circulation of this disc can be adjusted in height. This Height adjustment of the gripper is overlaid by a Panning movement that is achieved by removing from the axis of rotation of the gripper the gripper another rotatable shaft is associated with a sector gear that meshes with a gear. Still available is a cam plate with a groove track into which a Cam engages adjacent to the sector gear is attached to its outer periphery. With the circulation of the The axis of rotation of the gripper-carrying disc moves Cams on the sector gear along the cam track, causing the sector gear reciprocates around the shaft. The resulting back and forth movement of the sector gear transferred to the axis of rotation of the gripper via the gearwheel and so its height adjustment overlaid with the rotation. In this magazine device, the in Folding box transport system for folding box to be transferred gripped at the bottom by the gripper and into that Folding box transport system filed, so that at one Format change by changing the amount of Folding box no settings for the transfer to the Folding box transport system are required. At a Format change is however an adjustment of the location of the Magazine slot required so that the gripper always the folded folding boxes at a given Reference line, namely the crease edge can take.

Another magazine device of the type mentioned is disclosed in EP 0 705 684 A1, in which on one rotating driven disc, distributed around its circumference, several grippers are arranged, their adjustment by one arranged on the disc, in the circumferential direction closed control curve is effected. The The height of the grippers is adjusted when they rotate the disc corresponding to the vertical component of a Circular path.

The invention is therefore based on the object Magazine device of the type mentioned above train that an alternative method of Removal of folding boxes from a magazine shaft is provided with which at a Format change the adjustment of the magazine slot avoided and at the same time a safe one Hand over the unfolded folding box into the Folding box transport system can be achieved.

This task is carried out in a magazine device initially mentioned type solved in that the Magazine shaft rigidly arranged on the packaging machine is that the axle bearing is formed by a means of a first drive on a vertical guide adjustable vertical slide, which on a means of a second drive on a horizontal guide adjustable horizontal slide that is arranged on the axis of rotation at the intersection of his lever arms Angle lever is attached to its free ends Lever arms the first cam roller and a second Cam roller are stored, and that in addition to the first Rotation control curve a second rotation control curve is provided, the first cam roller and the second Cam roller in one rotation control cam intervene and the rotational position of the gripper only from the position of the vertical slide can be influenced.

The magazine device according to the invention stands out through a significantly simplified arrangement of the Magazine shaft in the packaging machine because this itself no longer has to be adjustable, but can be rigidly arranged. The one with a format change necessary adjustments to correct relative Alignment of the gripper and the foremost in Folding box standing in the magazine slot is only carried out by a change in the position of the gripper without manual Interventions solely through actuation and reproductive Setting the drives for the adjustment of the Horizontal slide and vertical slide can. The adjustment of the horizontal slide and the Vertical sliding is basically independent from each other, so that unlike a circular movement the Height of the gripper can remain constant and still a shift in the horizontal direction is possible. This can be done both when removing the folding box the magazine shaft as well as when it is handed over to the Folding box transport system can be used, because to an adjustment of the gripper parallel to Magazine slot is possible and the folding box is removed can be placed with their edges on the magazine shaft to initiate. When the folding boxes are handed over to the Folding box transport system can be through the Horizontal slide a movement of the folding box in Direction of transport of the folding box transport system generated and so the folding box longer by the gripper held and led. It should be noted that the rotational position of the gripper from the position of the Horizontal slide is independent and only of the Position of the vertical slide is affected.

A preferred embodiment of the invention is thereby characterized in that the first rotation control curve and the second rotation control curve are shaped so that at the height adjustment of the axle bearing the first cam roller and the second cam roller are alternately effective in Areas due to the angular position of the Bell crank a large angle of rotation of the bell crank and thus the gripper for each distance covered during the Allow height adjustment. This embodiment is characterized by its particularly compact design, in terms of both length and Width dimension, which is achieved solely by that at an unfavorable angular position of one Angle lever relative to the rotation control curve, if this is in the steep area of its circular path around the Axis of rotation and a further rotation only by one large vertical adjustment of the gripper would be possible second angle lever is activated, which is in relation to the change in height in the flat area of its circular path the axis of rotation is located.

It is also planned that the magazine shaft by one Tilt angle against the horizontal with its mouth is sloping down and the first and the second Rotation control curve are shaped so that the Total angle of rotation of the gripper 90 ° plus the Tilt angle is. The inclined arrangement of the Magazine slot serves to prevent the slide in the Magazine box stacked folding boxes for it To ensure the mouth using gravity, so that active funding mechanisms are dispensed with can. There is an inclination angle of 30 ° in this Proven sufficient. However, it can the magazine shaft can also easily handle other angles of inclination have, since this itself can no longer be adjusted must with format changes and an adjustment to its location and orientation solely through the adjustable gripper is possible.

To the operational safety of the invention To increase the magazine device, it is favorable if the Vertical slide a second horizontal guide for one has second horizontal slide in which the axle bearing and a third cam roller arranged in a Scenic track engages. In this embodiment it is on the one hand by the suitable shape of the backdrop track possible with a vertical adjustment of the vertical slide forced horizontal adjustment of the gripper to effect the second horizontal slide if one recurring horizontal displacement of the gripper is desired in its height adjustment, for example when put down in the folding box transport system. It is also possible to linearly adjust the slide path design and to use that a clamping of the first Cam roller and the second cam roller in the Control curves is avoided, i.e. the axis of rotation of the Gripper suitably aligned relative to the control cams is.

It is expediently provided that the Folding box transport device for a guardrail Unfold the folding boxes after removing them from the Is assigned to the magazine shaft because it is only by the Adjustment of the folding box relative to Folding box transport system without further adjustable Components that are unfolded.

With regard to preserving the unfolded state of the It is folding boxes in the folding box transport system cheap if the folding box transport system is one in the Transport direction oriented cover rail, whose free-standing facing the drop-off point of the folding box At the end, one that exceeds the width of the folding box Distance from the guardrail. So that's it possible, regardless of the current width the folding box this at the free end of the cover rail past into the folding box transport system and thanks to the horizontal movement that can be easily implemented to slide under the cover rail, which is another The shape of the folding box is prevented.

It is still favorable if the first and the second Rotation control curve at the bottom of a straight, have a vertical gradient. With this design can a format adjustment is taken into account and always be ensured that the folding boxes immediately without a drop section on the folding box transport system can be stored by folding boxes with less When the grippers are unfolded, the height simply continues is adjusted downwards without additional rotation.

Fig. 1

eine perspektivische Darstellung der erfindungsgemäßen Magazinvorrichtung für die Entnahme von Faltschachteln mit dem Greifer in einer Stellung, in der dieser die zuvorderst an der Mündung des Magazinschachtes anstehende Faltschachtel entnimmt,

Fig. 2

eine perspektivische Darstellung der Magazinvorrichtung ohne den in Fig. 1 gezeigten Magazinschacht und ohne das Faltschachteltransportsystem,

Fig. 3

eine isolierte, perspektivische Darstellung des auf einem Kreuzschlittens mit dem durch den ersten Antrieb verstellbaren Vertikalschlitten angeordneten Greifers,

Fig. 4

eine isolierte, perspektivische Darstellung des Horizontalschlittens mit dem zweiten Antrieb,

Fig. 5

eine isolierte, perspektivische Darstellung des Eingriffs der dem Winkelhebel zugeordneten Kurvenrollen in die Rotations-Steuerkurven,

Fig. 6

eine Ansicht von hinten des Gegenstands aus Fig. 5,

Fig. 7 bis Fig. 13

eine der Fig. 1 entsprechende Darstellung der Magazinvorrichtung in unterschiedlichen Verfahrensstadien eines Entnahmezyklus, und

Fig. 14

bis

Fig. 20

eine Vorderansicht der Magazinvorrichtung aus Fig. 1 in unterschiedlichen Verfahrensstadien eines Entnahmezyklus.

In the following the invention will be explained in more detail using an embodiment shown in the drawing; show it:

Fig. 1

2 shows a perspective view of the magazine device according to the invention for removing folding boxes with the gripper in a position in which the latter removes the folding box which is present at the mouth of the magazine shaft,

Fig. 2

2 shows a perspective view of the magazine device without the magazine shaft shown in FIG. 1 and without the folding box transport system,

Fig. 3

an isolated, perspective view of the gripper arranged on a cross slide with the vertical slide adjustable by the first drive,

Fig. 4

an isolated, perspective view of the horizontal slide with the second drive,

Fig. 5

an isolated, perspective view of the engagement of the cam rollers assigned to the angle lever in the rotation control cams,

Fig. 6

5 shows a rear view of the object from FIG. 5,

7 to 13

1 a representation of the magazine device corresponding to FIG. 1 in different process stages of a removal cycle, and

Fig. 14

to

Fig. 20

a front view of the magazine device of FIG. 1 in different process stages of a removal cycle.

In Fig. 1 is part of a magazine device of 30 ° inclined to the vertical magazine shaft 1 one not fully shown packaging machine shown at the mouth of a folded Folding box 2 is upright folding boxes stacked side by side in the Follow magazine slot 1, but the Not shown here for the sake of clarity.

The folding boxes 2 stacked in magazine slot 1 are characterized by the magazine device according to the invention removed from the magazine shaft 1 and on Folding box transport system 19 passed, with which the the transfer folded folding boxes 2 by means of a endless belt can be transported and in each case between one of the folding boxes 2 leading and trailing transport fingers 20. The magazine device has a suction head 3 trained gripper 4. This suction head 3 is provided in pairs and arranged on an axis of rotation 5, in a height-adjustable axle bearing 6 is stored. This axle bearing 6 is in the illustrated Embodiment arranged on a by means of a first drive 21 on a vertical guide 7 adjustable vertical slide 8 and one in Vertical slide 8 on a second horizontal guide 9 adjustable second horizontal slide 10, which also Axle bearing 6 is directly assigned. This one formed cross slide is on a first Horizontal slide 22 arranged for its adjustment a separate drive 23 is provided.

The movement of the suction head 3 is positively controlled through an overlay resulting from the height adjustment of the axle bearing 6 resulting translatory movement and a rotational movement that comes from working together an angle lever 11 with two rotation control cams 16, 17 is generated, in addition, regardless of the Horizontal adjustment is also possible.

On the axis of rotation 5 is at the intersection of its lever arms the angle lever 11 attached to the free ends its lever arms a first cam roller 14 and a second Cam roller 15 are mounted, the first Cam roller 14 in the first rotation control cam 16 engages and the second cam roller 15 in the second Rotation control curve 17. There is one in the vertical slide assigned third cam roller 18, which in a Slide 27 engages.

The suction head 3 is shown from its upper one in FIG. 1 Adjusted position down, the following results apparent from Figures 1 and 7 to 13 Sequence of movements of the three cam rollers 14, 15, 18 in the Slide 27 and the rotation control curves 16, 17. The Suction head 3 is first through the horizontal slide 22nd and the vertical slide 8 parallel to the side walls the magazine slot 1 and perpendicular to the folding box 2 adjusted so that a collision of the folding box 2 with the side walls of the magazine shaft 1 is avoided. at the continued downward movement from top dead center the first cam roller 14 is initially effectively engaged the first rotation control curve 16 and thus causes one Rotation of the axis of rotation 5 and of course the associated Rotation of the suction head 3. The second cam roller 15 is not effective and passes through this area of the second Rotation control curve 17 without function. The first Rotation control curve 16 and the second Rotation control curve 17 are so shaped that in the height adjustment of the axle bearing 6 in the Cross slide the first cam roller 14 and the second Cam roller 15 are alternately effective in areas that due to the angular position of the angle lever 11 a large angle of rotation of the angle lever 11 and thus the Suction head 3 per distance covered during the Allow height adjustment. It is immediate realizes that from the top vertex of the circular orbit of the angle lever 11 only for a rotation angle of 45 ° much less height loss is required in Comparison to the next 45 °. This is also evident from Fig. 5, in the continued downward movement of the suction head 3, the first cam roller 14 is first effective remains until it occurs around its axis of rotation 5 Circular movement of the essentially vertical Area of their circular path is reached and a continued Rotation by the first cam roller 14 a large one vertical adjustment of the axle bearing 6 would require. In this area, the first cam roller 14 loses first rotation control curve 16 their function and second cam roller 15 in the second Rotation control curve 17 takes effect at a time in which this is in relation to the altitude in one Area of their circular path is in which this with a large by the horizontal component of their movement generated angle of rotation with little loss of height Rotational movement about the axis of rotation 5 during the downward movement of the suction head 3 can continue. With the from FIG. 5 apparent form of the first and the second Rotation control curve 16, 17 it is possible to Generate total rotation angle of the suction head 3, the 120 ° achieved and if necessary with a more inclined Magazine well also exceeds.

With the downward movement of the suction head 3, the Magazine box 1 removed folding box 2 on one Guide rail 24 guided along and erected until the generally cuboid shape of the folding box 2 is reached. Depending on the height of this folding box 2, the Downward movement of the cam rollers 14, 15 at the lower end in a straight, vertical course of the Rotation control curves 16, 17 continued to the Folding box 2 in the folding box transport system 19 discontinued. After weaning, the Horizontal slide 22 used to the folding box 2 in Transport direction of the folding box transport system 19 with to move the gripper 4 and under a cover rail 25 slide the folding box 2 facing, free-standing end the width of the Folding box 2 distance from the Has guardrail 24.

Due to the configuration of the Magazine device for the removal of folding boxes 2 also offer themselves in the construction of the Packaging machine advantages, because the feed unit of the Folding boxes 2 to the magazine shaft 1 with this Format change must not be adjustable, so that a simplified storage can be used. It is one Automation with format changes possible because the Position of the gripper 4 by the horizontal slide 22 and the vertical slide 8 on a reference line Folding box 2, usually the creased edge, matched just by operating the first and second Drive 21, 23 without manual intervention or format parts to have to replace.

Claims (7)

1. A magazine apparatus for folding boxes (2) in packaging machines, comprising a magazine shaft (1) for guiding the folding boxes (2) stacked on end in mutually juxtaposed relationship and a gripper (4) for taking over the foremost folding box (2) in the magazine shaft (1), in particular a suction head (3), which is arranged on a rotary shaft (5) which is mounted in a shaft mounting (6) displaceable in respect of height, and a rotational control cam (16) for positive control of the required superimposition of translatory and rotational movements of the gripper (4) on the cam path thereof in the heightwise displacement of the shaft mounting (6) for transfer of the folding boxes (2) to a folding box transport system (19), wherein a first cam roller (14) coupled to the rotary shaft (5) engages into the rotational control cam (16), characterised in that the magazine shaft (1) is arranged rigidly at the packaging machine, that the shaft mounting (6) is formed by a vertical slide (8) which is displaceable by means of a first drive (21) on a vertical guide (7) and which is arranged on a horizontal slide (22) displaceable by means of a second drive (23) on a horizontal guide (26), that fixed on the rotary shaft (5) at the intersection of its lever arms is an angle lever (11), at the free ends of the lever arms of which are mounted the first cam roller (14) and a second cam roller (15), and that besides the first rotational control cam (16) there is provided a second rotational control cam (17), wherein the first cam roller (14) and the second cam roller (15) each engage into a respective rotational control cam (16, 17) and the rotary position of the gripper (4) can be influenced only by the position of the vertical slide (8).
2. A magazine apparatus according to claim 1 characterised in that the first rotational control cam (16) and the second rotational control cam (17) are so shaped that in the displacement in respect of height of the shaft mounting (6) the first cam roller (14) and the second cam roller (15) are alternately operative in regions which by virtue of the angular positioning of the angle lever (11) permit a large rotary angle of the angle lever (11) and thus the gripper (4) per distance covered in the displacement in respect of height.
3. A magazine apparatus according to claim 2 characterised in that the magazine shaft (1) is inclined downwardly through an angle of inclination with respect to the horizontal with its mouth opening and the first and the second rotational control cams (6, 17) are so shaped that the total rotary angle of the gripper (4) is 90° plus the angle of inclination.
4. A magazine apparatus according to one of claims 1 to 3 characterised in that the vertical slide (8) has a second horizontal guide (9) for a second horizontal slide (10) in which are arranged the shaft mounting (6) and a third cam roller (18) which engages into a sliding guide track (27).
5. A magazine apparatus according to one of claims 1 to 4 characterised in that the first and second rotational control cams (16, 17) are of a straight vertical configuration at the lower end.
6. A magazine apparatus according to one of claims 1 to 5 with a folding box transport system (19) characterised in that associated with the folding box transport system (19) is a guide rail (24) for unfolding the folding boxes (2) after the removal thereof from the magazine shaft (1).
7. A magazine apparatus comprising a folding box transport system (19) according to claim 6 characterised in that the folding box transport system (19) has a cover rail (25) which is oriented in the transport direction and whose free end which is towards the deposit location of the folding box (2) is at a spacing from the guide rail (24), which exceeds the width of the folding box (2).

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