EP1449777B1

EP1449777B1 - Machine for the automatic dispensing of protective, separation dividers for groups of bottles which is intended for bottle packaging lines

Info

Publication number: EP1449777B1
Application number: EP02785424A
Authority: EP
Inventors: Pedro Serras Vila
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-29
Filing date: 2002-10-23
Publication date: 2006-05-17
Anticipated expiration: 2022-10-23
Also published as: WO2003037723A1; EP1449777A1; ES2263831T3; US20040237469A1; DE60211547T2; ES2217907B1; DE60211547D1; ES2217907A1

Description

The present invention refers to a machine which automatically dispenses protective, separation dividers for groups of bottles and which is intended for bottle packaging lines.
Bottle packaging industry has employed numerous systems for preventing the breakage and damage of bottles caused by their clinking together when being packaged in boxes intended for containing groups of bottles, as well as by their transport, storage and distribution.
The same problem occurs with bottle labels. During transport fortuitous rubbing of bottles against each other causes the damage of the labels, which renders them unusable. For this reason this industry has developed systems for protecting packaged bottles.
Straw hoods slipped on every bottle, for instance, have been employed. Wood shavings and other materials have also been used as shock-absorbing beds for bottle boxes. A further arrangement consisted in using inner frames made of cardboard or fibers that create independent housings in the boxes intended for containing groups of bottles.
All the above solutions, owing to their complexity, pose serious problems when it comes to mechanizing the packaging process.
Other solutions consist in employing analogous procedures to bottle labeling in order to sheath the bottles with protecting materials, such as corrugated cardboard. Spanish Patent 2110346, for instance, describes a machine featuring the above characteristics that manages to solve the problem of mechanizing bottle packaging and also provides bottle protection. The disadvantage of this type of machines is that they are complex and costly.
There exist in the market separation dividers intended to provide the packaging of groups of bottles with reticular spatial structures capable of lodging the bottles preventing thereby the damage thereof caused by mutual contact. Among these separation dividers are those described in Spanish Patents N° 9400980 and N° 9601786, consisting of an assembly of reticular dividers storable in the form of sheets folded upon themselves.
The disadvantage of these protective separating units is that they are to be inserted by hand in the packages of groups of bottles. Therefore, operators have to remove the sheets from the storage pack, unfold them and insert them in the packaging having to overcome at the same time the tendency of the separation divider to fold back. The insertion is hence slow-going and cumbersome.
Document US-A-3 483 802 discloses a system for inserting already expanded partitions in cartons Document EP-A-0 032 786 discloses an apparatus for expanding partitions based on channels that grip and expand said partitions.
The object of this invention in intended to solve the above disadvantages, the said invention consisting of a continuous operation machine that automates the formation of the spatial structures for the separation dividers and the dispensing of the said protective separating units in packaging lines for groups of bottles.
The machine of the present invention is highly multifunctional and can be easily adapted to several analogous separation dividers, through the selection of suitable guiding bodies. Further, it can dispense separation dividers both, in the interior of boxes, which can be empty of bottles or not, or in a loose condition for further inserting bottles and thereafter introducing the assembly in boxes or in groups of bottles that shall subsequently be placed in their corresponding box or packing.
With the continuous operation of the machine object of the invention what is achieved is both a high performance as far as the number of separation dividers supplied by time unit and the low costs in the manufacture and processing of the said dividers is concerned.
A practical embodiment of the machine of the invention is described further down by way of non-limiting example below, there being appended 3 sheets of drawings, in which Figure 1 is a schematic representation of the travel made by the machine carrying a separation divider from the moment of removal thereof from the storage pack to the insertion thereof in the packaging for groups of bottles.
Figure 2 is a partial perspective view of the machine of the invention that shows a detail of both the machine's removal mechanism of separation dividers from the storage pack and the fastening mechanism of the said separation dividers.
Figure 3 is a lateral view of the removal mechanism of separation dividers from the storage pack.
Figure 4 is a detail of the frame expanding mechanism of the machine of the invention.
Figure 5 is perspective view of a gripping claw in accordance with one the preferred embodiments of the invention.
Figure 6 is a perspective view of the machine showing the guiding bodies for the final alignment of the separation dividers.
The machine object of the present invention comprises a frame or fixed support (15) along which endless motor-driven chains (2) move, not shown. On the said endless chains (2) are arranged the gripping claws (3) for the separation dividers (1), such that a continuous processing circuit is formed (Fig 1), which circuit ends with the dispensing of the separation divider (1) spatial structure in the packaging line of the groups of bottles.
In order to perform this cycle the machine starts from a reticular-shaped separating unit that is folded forming a sheet. This sheet, typically made of cardboard, is supplied to the machine from a storage pack (4).
The machine of the invention commences its operation by removing, through suitable means, one separation divider from the storage pack that is thereafter positioned in the machine's processing circuit. In a preferred embodiment of the invention, for such purpose it is employed pusher stops (5) that rotate in an endless chain (6) and push the lower unit located in a storage pack (4).
The storage pack (4) of separation dividers (1) is provided on the support surface thereof with an aperture (7) which enables the stops (5) to both reach the level of the last unit (1) and push it towards the body of the machine of the invention.
A movable platform (8) which ensures the separation of the separation divider (1) with respect to the pusher stops (5), as shown in figure 2, in conjunction with a swinging ramp with counterweight (10), as shown in figure 3, contribute to correctly positioning the separating unit (1) in the circuit of the machine. The pusher stops (5) lift the movable platform (8).
Optionally, in a development of the present invention, a double open strip (11), shown in figure 3, acts as final stop and positions the separating unit in the starting position thereof in the circuit associated with the endless chains (2).
The machine object of the invention is provided with means for opening the claws (3) such as respective guides (12) that mechanically force them open.
The claws (3) further carry attached to the jaws thereof point-shaped guiding elements (13), as shown in figure 2, that perform a first opening of the separating unit laps so as to allow the claw (3), once opened, to grip only a suitable portion of the unit (1).
In another construction of the present invention, the claws (3) have the ends (17) thereof outwardly bent, as shown in figure 5, which permits an easy reception of the separation dividers (1). A strip (18) joining the jaws of the claws, maintains their closure tension, so that whenever the guides (12) are not exerting pressure toward the aperture of the claws, the strip (17), owing to the elastic inertia thereof, closes the jaws of the said claw (3).
The aforesaid claws (3) placed at one of the two sides of the machine are also provided with guiding means for the separation dividers (1). The said means consists in that to the claw (3) is attached an angle-shaped elbow (9), see figure 5, which, whenever the claw (3) grips the separation divider (1), permits the separation of the laps from the separation divider (1) facilitating the introduction of tips of the guiding bodies (14a).
The rotation of the endless chains (2) displaces the separation divider (1), now gripped by the claws (3) by means of the machine's processing circuit. As shown in figures 2 and 4 provision is made for stop and guiding bodies (14a, 14b and 14c), that when brushing against the moving separating unit and thanks to the special shape of the said stop and guiding bodies (14a, 14b and 14c), the said sheet-shaped separating unit (1) unfolds until to become a reticular spatial structure, then rotates the laps thereof from side to side about 180° so as to overcome the tendency to fold back in the shape of a sheet and, finally, becomes positioned ready for placement in the final packaging.
The number, shape and disposition of these guiding and processing members (14a, 14b and 14c) of the separation dividers (1) are dependant upon the size and consistency of the separating units.
Hence, some units (1) require an inverse folding so as to weaken the rigidity of the structure thereof and avoid that, once properly positioned in place due to their inertia, they tend to resume their original folded condition, which would hinder their proper insertion in the box carrying the group of bottles.
The guiding bodies responsible for the weakening process of the separating unit (1) structure are shown, in a preferred embodiment of the invention, in figures 2 and 3, and receive numerals 14a and 14b.
The guiding bodies responsible for the final positioning of the separation dividers (1), ready now for being dispensed, are shown in figure 4 and all receive numeral 14c.
Guiding bodies (14a, 14b and 14c) are in a suitable shape for the function of guiding process and handling required in any given case.
Provision is made in a preferred embodiment of the invention for the machine to be adaptable to several sizes and similar types of separation dividers (1). To that effect one of the sides of the frame (15) is provided with a movable wall (16) that adapts the capacity of the machine to larger units (1). In the figures appearing in the sheets of drawings, the said enlargement is shown. In order to adapt the size of the machine, it suffices to displace the movable wall (16) and to replace the guiding bodies elements (14a, 14b and 14c) by those suitable for the new type of separating unit (1).
The processing circuit of the machine of the invention can take place in an automatic way and can be controlled by a microprocessor that monitors each step and decides when and whether each separation divider (1) is to be positioned and that controls both the rotation of the endless chains (2 and 6) and the aperture/closure of the claws (3).
The machine of the present invention performs the process with a continuous operation. The construction thereof is such that it is not necessary to stop the cycle of the machine in order to perform any of the handling processes of the separating units (1).

Claims

Machine which automatically dispenses protective, separation dividers for groups of bottles and which is intended for bottle packaging lines, comprising a frame (15) along which endless chains (2) move, which endless chains 2 incorporate openable gripping claws (3) for gripping separation dividers (1) in a folded combination, forming a continuous processing circuit of same, and guiding bodies (14a, 14b and 14c) located in the said frame (15) whose shape is suitable for opening the laps of the said dividers (1) thereby forming the particular reticular spatial structure of same, being the said machine further characterized in that it rotates the said laps in either direction and in that it aligns the said separation dividers (1) in the successive packaging line.
Machine according to claim 1, characterized in that it is provided with both removing means for unitary separation dividers (1) from the storage pack (4) and placement means of such separation dividers in the continuous circuit.
Machine according to any of the previous claims, wherein the said removal and placement means consist of pusher stops (5) that are dragged along by a endless chain (6), and a movable platform (8) in conjunction with a swinging ramp with counterweight (10).
Machine according to any of the previous claims, characterized in that it is provided with a double open strip (11) located at the beginning of the processing circuit.
Machine according to any of the previous claims, characterized in that it is provided with opening and closing means, such as guides (12), for the gripping claws (3).
Machine according to any of the previous claims, characterized in that the said gripping claws (3) have the tips thereof (17) opened outwardly and are provided with a bent angle (9) on the said claws (3).
Machine according to claims 1 to 5, characterized in that attached to the jaws of the said griping claws (3) are guiding elements (13).
Machine according to any of the previous claims, characterized in that the frame (15) of the machine is provided with a movable side wall(16) for adapting the width of the machine as well as the number, shape and position of the guiding bodies (14a, 14b and 14c).
Machine according to any of the previous claims, characterized in that it incorporates a unit for controlling and monitoring the process that is governed by a microprocessor.