Apparatus and method for orienting articles
An apparatus comprises a moving arrangement for supporting and moving along an advance direction a plurality of articles; and orienting units movable along said advance direction and such as to contact and orient the articles by displacing angularly each article around an axis thereof so as to position the articles in respective output positions, the orienting units being such as to maintain the articles in contact with the moving arrangement, a detector being provided for each orienting unit for detecting an initial angular position of a respective article associated thereto and for promoting a desired angular displacement such that each article is brought in the output position.
1. Apparatus, comprising a moving arrangement for supporting and moving along an advance direction a plurality of articles, and orienting units movable along said advance direction and such as to contact and orient said articles by displacing angularly each article around an axis thereof so as to position said articles in respective output positions, said orienting units being such as to maintain said articles in contact with said moving arrangement, a detector being provided for each orienting unit for detecting an initial angular position of a respective article associated thereto and promoting a desired angular displacement such that each article is brought in said output position, said orienting units being mounted on supporting elements which are associated with a carriage element, said carriage element being slidably associated with a further carriage element that is movable along said advance direction between an initial position and a final position.
2. Apparatus according to claim 1 , wherein said moving arrangement comprises a belt device for supporting said articles and a further belt device provided with a plurality of crossbars spaced apart from one another and arranged for abutting on said articles.
3. Apparatus according to claim 1 , wherein each orienting unit comprises a contacting element for interacting with an upper portion of said articles.
4. Apparatus according to claim 3 , wherein said contacting element comprises one in a group including a pad element made of a material having a high friction coefficient, a suction-cup element, a gripping element.
5. Apparatus according to claim 1 , wherein each orienting unit is rotated by a respective motor.
6. Apparatus according claim 1 , comprising a single motor for rotating said orienting units through a driving arrangement.
7. Apparatus according to claim 1 , wherein each orienting unit comprises a locking arrangement for stopping a rotation of said orienting unit.
8. Apparatus according to claim 1 , wherein said carriage element is movable between an operating position, wherein said orienting units contact said articles and a rest position (PR), wherein said orienting units are spaced out from said articles.
9. Apparatus according to claim 1 , wherein said further carriage element comprises guides for slidably support sliding blocks elements of said carriage element.
10. Apparatus according to claim 1 , comprising a frame arranged for slidably supporting said further carriage element.
11. Apparatus according to claim 10 , wherein said frame comprises wall elements provided with further guides arranged for slidably supporting further sliding blocks elements of said further carriage element.
12. Apparatus according to claim 10 , wherein said frame comprises positioning elements for positioning said wall elements in a desired vertical position.
13. Apparatus according to claim 1 , comprising further moving arrangement arranged for moving said further carriage element along said advance direction.
14. Apparatus according to claim 1 , wherein each detector is arranged for identifying a reference provided on a respective article, so as to detect said initial angular position thereof and sending a detection signal.
15. Apparatus according to claim 14 , comprising a control device for receiving said detection signal and driving the corresponding orienting unit so as to position the article associated thereto in said output position.
16. Apparatus according to claim 1 , wherein each detector is mounted on a respective orienting unit.
17. Apparatus according to claim 14 , wherein each detector is movable between a retracted position and an extended position, wherein said detector can identify said reference of the respective article.
18. Apparatus according to claim 1 , comprising a detecting device positioned upstream said orienting units with respect to said advance direction and arranged for detecting positions of said articles along a direction transverse to said advance direction.
19. Apparatus according to claim 1 , comprising a compacting unit for compacting said plurality of articles along said advance direction and/or along a direction transverse to said advance direction, in order to form groups of adjacent articles.
20. Apparatus according to claim 19 , wherein said compacting unit comprises pusher elements which are movable along said advance direction and/or along said transverse direction and arranged for contacting and pushing said elements.
21. Apparatus according to claim 1 , wherein said articles are arranged on said moving arrangement so as to form rows transverse to said advance direction.