| 摘要 |
1,199,317. Endless conveyers. W. R. GRACE & CO. 25 Oct., 1968 [30 Oct., 1967], No. 49134/67. Heading B8A. [Also in Divisions B4-B5] Transfer apparatus for carrying articles 13 (as shown, trays) provided with at least two stud-receiving apertures 16a, 20a and two conveyers 1, 5 arranged for movement along non-parallel paths, one conveyer 1 being provided with at least one stud 15a for engaging in an aperture 16a in a tray 13, the other conveyer 5 being provided with at least one further stud 18a adapted to engage in a further aperture 20a in the tray 13, the two conveyers 1, 5 passing close to one another so that a tray 13 may be transferred from one conveyer to another, with engaging movement of the stud of one conveyer with respect to the associated aperture of the tray being in a direction tending to release the stud of the other conveyer from its associated aperture in the tray. As shown, the trays 13 have two key-hole slots 16a, 16b for engaging headed pins 15a, 15b of the conveyer 1. A cam 23a (Fig. 6), engages a follower 23 (Fig. 2) on the tray 13 so as to displace it leftwardly (Fig. 6). This causes the pins 15a, 15b to enter the enlarged portions of the slots 16a, 16b. The tray 13 is then in alignment with pins 17a, 17b on the conveyer 5 which enter upwardly into vertical slots 20a, 20b of the tray 13 (the slots have respective horizontal extensions 21a, 21b to make this possible). As described, the conveyers are part of an apparatus for moulding plastics liners in closures carried by recesses 14 of the tray 13 (see Divisions B4-B5). Pellets of the plastics materials are severed from lengths of rod fed by a device 27 and deposited in the liners. The liners and pellets are continuously fed by the conveyer 5 through an air-conditioning oven 4. The trays 13 are transferred back to the conveyer 1 at 26. After passing a moulding press 28 the liners are discharged to a container 29. |
