EP0802137A2 - Device for turning and feeding parcels - Google Patents

Abstract

The device consists of a carrier revolvingly or pivotingly arranged in a stand, and equipped with a rotation- or pivot drive. The carrier is equipped with crosswise to it proceeding guides for bars which are reciprocated through a drive and which carry a profile parallel to the carrier. The profile is connected with an amount of parallel arms which extend orthogonal to the profile. A transverse is connected through respective connecting pieces with the carrier, and comprises prongs which extend approximately parallel to the arms of the profile.

Description

The invention relates to a device for turning and applying packages, preferably stacks of flat workpieces.

For example, in the production of sacks from flat-lying hose sections, stacks of such hose sections that were previously produced in a so-called hose drawing machine must be separated again in order to be able to place the individual hose sections one after the other in the correct position on the so-called floor layer of a sack manufacturing system. So-called rotary feeders are used to separate packages from tube sections, into which the stacks to be separated are successively inserted. Such a rotary feeder is known for example from DE-PS 12 77 655.

Depending on whether the filling valves are to be attached to the front or rear of the bag manufacturing system, the tube section packages or stacks to be separated must be inserted unturned or turned into the rotary feeder. Attaching the filling valves to the rear or front end of the sacks to be produced is important, for example, if they are to be adapted to the imprints on the sacks.

Up to now, the hose section packages have been inserted into the rotary feeder by hand in unused or turned form, depending on the side on which the filling valves are to be attached during sack production.

The object of the invention is to provide a device with which packets and preferably stacks of flat workpieces can be applied to the conveying or processing devices in a turned or unturned form.

According to the invention, this object is achieved by a device for turning and applying packages, preferably stacks of flat workpieces, which consist of a rotatably or pivotably mounted in a frame and provided with a rotary or swivel drive, with transverse to these guides for is provided by a drive reciprocating rods which carry a parallel profile to the beam, which is connected at right angles to a number of mutually parallel arms, and a cross beam connected to the beam by connecting pieces, which is approximately parallel to the arms Wears tines.

With the device according to the invention, for example, the packages can be taken over from a feed conveyor and placed on a further conveyor or on a further processing device. The packages in the device according to the invention can be clamped over the head between the mutually parallel arms on the one hand and the mutually parallel tines, on the other hand, which form mutually movable surfaces. With the device according to the invention, packets can therefore be taken over and unturned or after turning overhead by about 135 ° or a larger angle to a conveying device or a conveyor Processing device can be created.

The carrier carrying the arms is expediently mounted in two mutually opposite supporting pieces which are guided in the same direction and parallel to one another in side parts of the side posts of the frame. In this way, a height compensation between the transfer station and the delivery station can be achieved. Furthermore, height adjustment must usually also be carried out if the packages to be created are to be turned between the transfer and delivery stations.

The carrier expediently forms the web part of a U-shaped frame, the legs of which are mounted in the support pieces so as to be pivotable about an axis parallel to the web part. A support piece can have a swivel drive for the frame.

In a further embodiment of the invention it is provided that the carrier is provided with transverse guides for guide rods which are essentially parallel to the tines and which are connected by a cross member parallel to the carrier to connecting pieces of the cross member carrying the tines, one of the guide rods reciprocating drive is provided. With appropriate control, this configuration enables the packages to be picked up and dropped off precisely before and after pivoting.

The drive can consist of toothed racks parallel to the guide rods, which mesh with these driving pinions.

In a further embodiment of the invention it is provided that the guides for the rods carrying the profile with the arms and the guides for the guide rods carrying tines in the cross member are arranged with the associated drives in a carriage which is slidably guided on the carrier. In this way, the packages to be taken over can be taken over in the correct position and aligned in the correct position for their delivery.

A pressure medium-piston-cylinder unit can be provided for moving the carriage.

Expediently, the rods moving the profile back and forth with the arms are the piston rods of pressure medium-piston-cylinder units.

Bearing pieces are preferably guided on the outer arms so as to be longitudinally displaceable and lockable, in which is mounted a shaft which can be pivoted by a drive and which carries stop plates which reach between the tines and can be pivoted approximately into the plane of the arms.

A good alignment, takeover and delivery of the packages is guaranteed if conveyor belts are arranged in the tines, the conveying dreams of which protrude beyond the sides of the tines facing the poor.

In order to be able to take over and deliver the packages once in unturned form and to others in a flipped form, a feed conveyor is provided for the parcels, the unit comprising the arms and tines being mounted in the machine frame so that it can be raised and lowered and pivoted such that once the arms and on the other hand the ends of the tines fastened to the cross member can be moved under the discharge end of the feed conveyor.

Fig. 1

eine Vorderansicht der Vorrichtung zum Abnehmen bzw. zum Abnehmen und Wenden von Paketen, beispielsweise von einem Zuführungsförderer, von der der besseren Übersichtlichkeit halber die die Zinken tragende Baugruppe entfernt ist,

Fig. 2

einen Schnitt durch die Vorrichtung längs der Linie II-II in Fig. 1,

Fig. 3

eine der Fig. 1 entsprechende Vorderansicht der Vorrichtung mit der die Zinken tragenden Baugruppe,

Fig. 4

einen Schnitt durch die Vorrichtung längs der Linie IV-IV in Fig. 3,

Fig. 5

eine Seitenansicht der die Zinken enthaltenden Baugruppe,

Fig. 6

eine Vorderansicht der an den seitlichen Armen befestigten schwenkbaren Welle mit Anschlagblechen, teilweise im Schnitt,

Fig. 7

einen Schnitt durch die Einrichtung längs der Linie VII-VII in Fig. 6,

Fig. 8

eine Seitenansicht der Vorrichtung mit unter das Abwurfende des Zuführungsförderers bewegten Armen und

Fig. 9

eine der Fig. 8 entsprechende Darstellung der Vorrichtung, in der die die Zinken enthaltende Baugruppe einmal unter das Abwurfende des Zuführungsförderers und zum anderen in die Ablagestellung oberhalb eines sog. Rotationsanlegers verfahren ist.

An embodiment of the invention is explained below with reference to the drawing. In this shows

Fig. 1

3 shows a front view of the device for removing or for removing and turning packages, for example from a feed conveyor, from which the assembly carrying the tines is removed for the sake of clarity,

Fig. 2

2 shows a section through the device along the line II-II in FIG. 1,

Fig. 3

1 corresponding front view of the device with the assembly carrying the tines,

Fig. 4

3 shows a section through the device along the line IV-IV in FIG. 3,

Fig. 5

a side view of the assembly containing the tines,

Fig. 6

2 shows a front view of the pivotable shaft with stop plates attached to the side arms, partly in section,

Fig. 7

a section through the device along the line VII-VII in Fig. 6,

Fig. 8

a side view of the device with arms moved under the discharge end of the feed conveyor and

Fig. 9

one of the Fig. 8 corresponding representation of the device, in which the assembly containing the tines once under the discharge end of the feed conveyor and on the other hand has moved into the storage position above a so-called rotary feeder.

The device for taking over and applying packages in the adopted or turned position is located above, for example, a rotary feeder and consists of two side posts 1 of a frame which are connected to one another at their upper end by a cross member 2. A geared motor 3 is mounted on the left end region of the cross member 2, and a double sprocket 4 is placed on its output shaft. This double sprocket 4 is partially wrapped by two chains 5, 6, which carry counterweights 7, 8 on their strand running to the left of the double sprocket 4. The other ends of the chains 5, 6 are fastened to slide-like support pieces 9, 10, the chain 5 being guided over a chain wheel 11 which is rotatably mounted in the right end region of the cross member 2. The two sled-like support pieces 9, 10 are movably supported in guides 12, 13 which are connected to the posts 1, 2.

In the support pieces 9, 10, the legs 14, 16 of a U-shaped frame are pivotally mounted about aligned trunnions, the legs 14, 16 being connected to the U-shaped frame by a carrier 15. The right leg 14 is pivotally mounted directly in the support piece 10 by means of a bearing pin standing at right angles thereon and the left leg 16 is fixedly connected via a spacer to a gear 17 which is rotatably mounted in the support piece 9. A geared motor 18 'is flanged to the support piece 9 in the manner shown in FIGS. 2 and 4, the output shaft of which carries a pinion 18. The pinion 18 drives the gear 17 via a chain 17 ', so that the frame 14, 15, 16 can be pivoted via the geared motor 18'.

The weight compensation 7, 8 ensures that the frame 14, 15, 16 can also be easily moved in height via the geared motor 3.

On the carrier 15, which forms the horizontal web part of the U-shaped frame, plates 21, 22 which are arranged at a distance from one another are displaceably guided by guide shoes 19, 20 which surround the carrier 15. The guide shoes 19, 20 are welded to the plates 21, 22 and the plates are connected to one another by a crossbar, not shown, to form a carriage which can be moved on the carrier 15. To move the slide 21, 22, a piston-cylinder unit 35 is connected to an end region of the carrier 15 via an angle piece of the cylinder, the piston rod of which is articulated to the plate 22.

The cylinders 25, 26 of piston-cylinder units are connected to the outer sides of the plates 21, 22, the piston rods 27, 28 of which bear at their ends a profile 31 parallel to the carrier 15, on which a plurality of at right angles and at a distance from one another freely running arms 32 are attached. The piston rods 27, 28 are guided on the plates 21, 22 attached guide bushes 29, 30 and firmly connected to the profile 31.

On the mutually facing inner sides of the plates 21, 22 of the slide, transverse slide guides 23, 24 are fastened transversely to the carrier 15, in which guide rods 70 of an assembly bearing tines 59 are guided to and fro, which will be described in more detail below. Above the guides 23, 24, in the plates 21, 22, a shaft 36, which can be driven by a geared motor 37, is mounted, onto which two pinions 38, 39 are wedged at a distance from one another, which parallel to the guide rods 70 in the manner described in more detail below Comb toothed racks 71 and serve to move the assembly carrying the tines 59.

The assembly bearing the tines 59 will now be explained in more detail with reference to FIGS. 3 and 5.

A cross member 58, which consists of a box profile, carries equidistantly attached to these prongs 59, which are fixed at right angles. The cross member 58 is connected by lateral connecting pieces 56 made of sheet metal to a cross member 57 parallel to this and the carrier 15 to form a rectangular frame. The traverse 57 also consists of a box profile. The cross member 57 is welded in its central region at a distance from one another with two upstanding support plates 68, 69, which are connected on their outer sides to the guide rods 70 and on their upper sides to the toothed racks 71, which can be seen in FIG comb the pinions 38, 39.

The tines 59 have a U-shaped profile, the legs of which point in the direction of the guide rods 70, which run approximately parallel to the tines 59. Conveyor belts 60 are arranged in the groove-shaped recesses of the tines 59 formed by the U-profiles, the upper strands of which protrude beyond the lateral legs of the U-profiles. The conveyor belts 60 run over front deflection rollers 61, which are mounted between the legs of the U-profiles, and over rear rollers 62, which are firmly attached to a shaft 63, which is rotatably mounted in the plates 56. A sprocket 64 shown in FIG. 3 is placed on the shaft 63, via which a chain 65 driven by the sprocket 66 of the geared motor 67 runs. The upper run 60 of the conveyor belt 60 running in the trough-shaped recess of the tines 59 is supported by intermediate rollers, not shown. The geared motor 67 is provided with a controller through which the conveyor belt 60 passes can be reversibly driven via the drive means described.

3, 4, 6 and 7, pivotable stop plates or stop arms 46 are connected to the two outer arms 32. For this purpose, 32 angle profiles 34 are welded to the outer arms consisting of box profiles, the upper legs of which point towards one another. The angle profiles 34 form with the tops of the arms 32 channel-shaped guides for slide rods 41, which are firmly connected to side plates 42. Cup-shaped bearings 43 are screwed to the side plates 42, in which the pins 44 of a shaft 45 consisting of a box profile are mounted via ball bearings. On the shaft 45 at a distance from each other at right angles to this stop arms 46 are attached. The shaft 45 is welded to a radial lever 48, on which the piston rod 49 of a piston-cylinder unit 47 is articulated, the cylinder 50 of which is articulated to the side plate 42. By appropriate actuation of the piston-cylinder unit 47, the stop arms 46 can be pivoted in the manner shown in FIG. 3 between the prongs 59 and somewhat into the plane of the arms 32.

The shaft 45 with the stop arms 46 can be moved by hand onto the outer arms 32 into the desired position. The bearings 43 are then fixed to the arms 32 in the desired position. For this purpose, the side plates are provided with outwardly projecting webs into which a locking screw 51 is screwed, which clampingly engages the upper legs of the angle profiles 34.

A guide rod parallel to this is attached to the carrier 15, on which a sensor, for example a photo cell or a photo push button 40, is arranged so that it can be moved and locked is, which detects the respective limit position of the profile 31 and thus the position of the slide 25, 26.

The function of the device for creating packages, optionally after a previous turning, will now be described in more detail with reference to FIGS. 8 and 9.

In the position shown in FIG. 8, the unit having the arms 32 and tines 59 has been moved upward in the guides of the side posts and has been pivoted over the head clockwise to such an extent that the support formed by the arms 32 is below the discharge end of the feed conveyor 82 located. In this position, the stop arms 46 are extended so that a hose package 55 'thrown off by the feed conveyor 82 lies down obliquely on the arms 32 in the manner shown, bearing against the stop arms 46. Then the piston rods 28 of the cylinders 25, 26 are extended so that the arms 32 clamp the hose package 55 'that has been taken over against the tines 59. The clamping and transport unit containing the arms 32 and tines 59 is then moved via the motors 3 and 18 'and pivoted counterclockwise, so that the hose package 55 is transported to a position above the rotary feeder 80 in the manner shown in FIG. 9. In this position, which can be seen in FIG. 9, the clamping is released by raising the arms 32 and the stack of hose sections 55 resting against the stop 81 of the rotary feeder 80 is then deposited on the rotary feeder in the manner shown for its separation. In order to ensure good storage, during the retraction movement of the tines 59, the conveyor belts 60 arranged in these tines are driven at a corresponding speed, so that the new tube section stack 55 lies down in the correct position for the purpose of being separated onto the rotary depositor 80.

If the hose section packages to be deposited on the rotary feeder 80 and to be separated by this are not turned after being removed from the feed conveyor 82, the pick-up rake consisting of the tines 59 is pivoted into a horizontal position by the geared motor 18 and into the height of the by the geared motor 3 Move the discharge end of the conveyor belt 82. The pick-up rake is then moved backwards by the geared motor 37 and the pinions 38, 39 until it touches the conveyor belt 42 with its rear end. The stop arms 46 are pivoted into the plane of the arms 56, so that a new hose section package 55 can be pushed from behind onto the receiving rake formed by the prongs 59. To reduce the friction and to ensure a good transfer, the conveyor belts 60 running in the tines are activated until the hose section package which has been taken over roughly reaches the front ends of the freely running tines 59. Then stop arms 46 are pivoted so that they engage between the tines 59. The conveyor belts 60 are then driven in the opposite direction of conveyance, so that the stack of hose sections lies against the stop arms 46. The tines 59 are then moved into the position shown in FIG. 9, from which the tube section stack 55 is then placed on the rotary feeder in the manner described.

Claims (12)

Device for turning and applying packages, preferably stacks of flat workpieces from a rotatably or pivotably mounted in a frame and provided with a rotary or swivel drive, which is provided with transverse to this guides for rods which can be pushed back and forth by a drive and which carry a profile parallel to the carrier, which is at right angles with a number of mutually parallel arms is connected, and from a cross member connected to the carrier by connecting pieces, which carries approximately parallel tines to the arms. Apparatus according to claim 1, characterized in that the carrier is mounted in two mutually opposite support pieces which are guided in the same direction and parallel to each other in side parts or side posts of the frame. Apparatus according to claim 1 or 2, characterized in that the carrier forms the web part of a U-shaped frame, the legs of which are pivotally mounted in the support pieces about an axis parallel to the web part. Device according to one of claims 1 to 3, characterized in that a support piece has a pivot drive for the frame. Device according to one of claims 1 to 4, characterized in that the carrier is provided with guides extending transversely to the latter for guide rods which are essentially parallel to the tines and which are connected by a cross member parallel to the carrier to connecting pieces of the cross member carrying the tines, and that a drive which reciprocates the guide rods is provided. Apparatus according to claim 5, characterized in that the drive consists of racks parallel to the guide rods, which mesh with the pinions driving them. Device according to one of claims 1 to 6, characterized in that the guides for the rods carrying the profile with the arms and the guides for the guide rods carrying the cross member with the tines and the associated drives are arranged in a slide which is displaceable on the Carrier is guided. Apparatus according to claim 7, characterized in that a pressure medium-piston-cylinder unit is provided for moving the carriage. Device according to one of claims 1 to 8, characterized in that the rods moving the profile back and forth with the arms are the piston rods of pressure medium-piston-cylinder units. Device according to one of claims 1 to 9, characterized in that bearing pieces are guided on the outer arms so as to be longitudinally displaceable and lockable, in which is mounted a shaft which can be pivoted by a drive and which engages between the tines and can be pivoted approximately into the plane of the arms wearing. Device according to one of claims 1 to 10, characterized in that conveyor belts are arranged in the tines, the conveying strands of which protrude beyond the sides of the tines facing the arms. Device according to one of claims 1 to 11, characterized in that a feed conveyor is provided for the packages and the unit comprising the arms and tines is mounted in the machine frame such that it can be raised and lowered and swiveled such that the arms and, on the other hand, those on the Cross beam attached ends of the tines are movable under the discharge end of the feed conveyor.

Images