| 摘要 |
1,247,918. Orientating and transferring articles by endless conveyers. SPEAKER SORTATION SYSTEMS Inc. 20 Nov., 1968 [21 Nov., 1967], No. 55110/68. Heading B8A. An endless conveyer 12 feeds articles into predetermined trays 4 of an endless conveyer 1 by means of first and second transfer conveyers 34, 35, the conveyer 35 being formed of a number of laterally positioned belts 51 of successively different length and which travel at successively different speeds. Each article is thereby turned into alignment with its destined tray 4 at the moment of transfer. The conveyer 34 has two separate drives. The first is at high speed from the drive motor 41 (Fig. 3) of the conveyer 35 via a clutch 42. The second is via a clutch 45 from the drive of the conveyer 12. A brake 44 is provided on the drive shaft of the conveyer 34. The clutch 45 is engaged when an article obstructs a photo-electric cell 47. The clutch 42 is engaged when a limit switch 48 is operated by the belt 12. The clutch 42 overrides the clutch 45. The belt 12 moves in steps controlled by a control circuit 19. The belt is stopped periodically by the action of a photoelectric cell 31 operating through apertures 31a in the belt 12. A keyboard 18 is actuated by an operator when an indicator light is energized by a belt-operated switch 33. This determines the particular tray 4 for which the article is destined. The belt 12 may be marked in equal longitudinally spaced coloured area to assist in proper orientation and location of articles. The articles are fed to the conveyer 12 by a manual operator from a table 20. They are fed to the table 20 from a shoot 10 under the control of an indexing roller 21 driven through a clutch 23 controlled by a photo-electric cell 24. As shown, there are two assemblies side by side feeding the conveyer 1 and supplied with articles from a common feed conveyer 8, via a swivelling belt conveyer 55. The latter is also movable longitudinally by an arrangement of support rollers and channels. |
