| 摘要 |
924,559. Emptying compartmented trays; stacking; boxes. SYLVANIA ELECTRIC PRODUCTS Inc. Dec. 2, 1959 [Dec. 15, 1958], No. 41009/59. Classes 18 and 94(1). [Also in Group XXX] A machine for feeding articles such as electron tube components to an automatic assembly machine (not described), comprises means for turning upside down compartmented trays containing the articles and for sliding them progressively over an edge whereby a controlled number of articles falls on to means carrying them to the assembly machine. The machine includes also means for forming a stack of empty trays. Emptying trays. A stack of filled trays 32, Fig. 20, is placed between guide posts 52 on an extension 24 of the machine frame, Figs. 1-3, and is thrust by a pusher 36, Fig. 1, and Fig. 4 (not shown) on to an elevator platform 42. The lowermost tray contacts switch means 63, Fig. 2, causing the elevator to rise until stopped by the uppermost tray actuating a switch 96. The uppermost tray is gripped by dogs 107, Figs. 1, 6, 7, 7a on a vertically reciprocating carriage 108 and presented to the underside of a plate 125 mounted on a pivot shaft 154 and having resilient and antifriction coverings 134, 136 respectively, Fig. 10. Members 138, Fig. 7, on the plate 125 engage the tray and the carriage 108 descends. The elevator rises a distance equal to a tray thickness. The plate 125 now rotates through 180 degrees so that the articles rest on its covering 136. A pusher 178 slides the tray 32 relative to the plate so that successive rows of articles are discharged on to a conveyer belt 174, see particularly Figs. 2, 10. The articles fall into a funnel 273 of the assembly machine. Finally the tray is discharged on to inclined rails 232, Figs. 3, 6 of the stacking mechanism. Stacking empty trays. The trays are located by stops 236, Figs. 3, 6, 16 on a verticallymovable carriage 238, and as the latter rises, these stops in conjunction with members 240, carry each tray above spring loaded dogs 248. The dogs retain the tray against the base of others previously fed to the stack.
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