State of the art Several kinds of continuous rotary machines to perform overturned bottles washing are known. In said machines, the overturning of the bottles from the vertical position facing upwards to the vertical position facing downwards is obtained during the rotation of a carousel provided, externally, with a plurality of forks that slide along a fixed ring-guide specifically shaped.

The shaping of such metal ring is usually hand made and is expensive and often imprecise. Also, the continuous sliding causes the wear of the sliding forks and of the fixed guide (twist), resulting in the altering of the operational conditions of the plant. Some kinds of plants are provided with a lubrication system, which has however proved insufficient.

The target is then to avoid all the problems caused by the wear of the forks and of the shaped guide (twist). The present invention solves all the aforementioned problems by eliminating the wear due to sliding.

Description The invention is now disclosed with reference to the figures attached to be considered as an unrestrictive example.

Figure 1 represents the schematic view of a rotating carousel (1) provided, externally with a set of gripping devices (2) showing an entering bottle (B) in vertical position facing upwards and an exiting bottle (B') turned upside down with its neck facing downwards. Please note the presence of a fixed track (5) specifically shaped with its lower part located by the entrance zone of the upright bottle, and the higher part located by the exit zone of the overturned bottle. The moving parts consisting of a lobe wheel (9) and its congruent sector (10) perform the overturning of the bottle during the rotation of the carousel (1). The rolls (3) during the carousel rotation (1) roll without sliding on the fixed track (5), thus causing the angular swings of the arm (6) articulated to the pivot (7) on the rotating carousel (1). Said arm angular swings (6), increased by the conjugated mechanism (9,10), perform the complete overturning of the bottle from position (B) to position (B').

Figure la shows in detail the entrance of the bottle (B) taken by the gripping equipment (2) that holds it in vertical attitude face upwards.

Figure lb shows in detail an intermediate phase during which the gripping equipment (2) holds the bottle in horizontal attitude.

Figure lc shows in detail the exit phase of the bottle held in overturned position by the gripping equipment (2).

Figures 2a, 2b and 2c represent structural variations having functions similar to those of figures la, lb and lc. The conjugated mechanisms (9', 10') perform the same function as the mechanisms (9 and 10) and increase the angular swings of the arm (6). The recall spring (11) allows using a single roll (3) that rolls on the fixed shaped track (5) without sliding.

Figure 3 is a plan view of the gripping equipment (2) that holds the moving bottle in horizontal position. The partial section of the swinging edge (6) shows the engagement of the conjugated mechanisms (9', 10') and the application of the gripping equipment (2) that holds the moving bottle.

Figure 3a is a further enlargement of the partial section of the arm edge (6) which highlights when the angular swinging of the arm (6), increased by the mechanisms (9', 10'), performs the overturning of the gripping equipment (2) taking the moving bottle.

Figure 3b is a synoptic schematization of the complete overturning of the bottle (180 degrees rotation) obtained by increasing tenfold the reduced swinging of the arm (6) around the fulcrum (7). It is implied that the rotation of the bottle is to be of 180 degrees, but the angular excursion of the arm (6) can be reduced. In figure 3b the reduction ratio is ten, but a satisfactory functioning can be achieved even with different ratio values from those indicated in the drawing.

Figure 4 indicates a variation of the example shown in figures 1, la, lb, lc. Please note that the mechanism (9 and 10) has been replaced by the mechanism (9'and 10'). Figure 5 shows a variation similar to figure la with two fixed tracks (5,5').

Figure 6 is similar to figure 2a, with the only variation of the amplifying mechanisms (9,10) instead of the mechanisms (9'and 10').

In the figures each single detail is marked as follows: 1 : rotating carousel; 2 : a gripping mechanism; 3 : a roll that rolls without sliding on a fixed track specifically shaped; 4 : the fixed base of the rotating carousel; 5 : specifically shaped fixed track ; 5': a second fixed track; 6: a swinging arm; 7: the swinging fulcrum of the arm (6).

8 : the carousel rotation axis.

9 : a three-lobed wheel.

9': a toothed pinion.

10 : a sector engaging with the three-lobed wheel (9).

10' : a sector engaging with the pinionv9').

11 : a recall spring to keep the rolls (3) adherent to the fixed track.

The figures point out that the overturning of the moving bottles is obtained through the rolls (3) that roll without sliding along the specifically shaped track, with the lower part facing the bottle entrance zone (B) and the upper part facing the exit zone of the fully overturned bottle (B'). Said rolls (3) both engaged to run along the fixed track (5), perform the swinging of the arm (6) around the pivot (7) on the rotating carousel (1). At the end of said swinging arm (7) there is a lobed wheel (9) engaging with a rack (10) connected to the carousel (1). During the continuous rotation of the carousel (1) the rolls (3) roll without sliding along the fixed track (5) and perform the swinging of the arm (7) and the consequent increased rotation of the mechanisms (9,9') engaged with relevant racks (10,10').

The rotations of said mechanisms (9,9') cause the overturning of the gripping organs (2) that take each incoming bottle, turn it during the path of the inclined track and overturn it completely before setting it free at the exit. h e figures of the attached drawings represent graphically only an example of the possible forms of practical realization of the different parts composing the devices object of the present invention. It is in fact evident that the structural dimensioning and proportioning of the different components will be defined according to the productivity goals set for each kind of plant, for the handling of bottles or other containers, or objects to be overturned during the continuous transit.

The lobed wheel (9) and the rack (10) can be manufactured with different mechanisms such as sectors of helical or globoid wheels with worm screws, or with conic sectors engaging with conjugated pinions or also with special conjugated mechanisms with conjunct outlines. It is also evident that the technological choices concerning the building materials will be made according to different criteria of realization in compliance with the economic choices necessary to meet the variable market needs.

The inventive core of the invention is the realization of a device to overturn objects in continuous transit with the total elimination of the sliding organs used so far in the systems known. The key point of the invention lies in the simplicity of the solution and in the absolute functional reliability even at high productive rhythms. Its manufacturing is also significantly inexpensive, easy to be performed and it also requires very little maintenance.

Upon disclosure of the main original characteristics of the overturning device object of the present invention, any average technician will be able to manufacture, without inventive effort, devices based on the description and the schematic figures of the attached drawings representing an unrestrictive example.

All the devices featuring the characteristics as basically described, illustrated and hereinafter claimed will be considered as being part of the protection sphere of the present invention.