Conveyors: power-driven – Conveyor system for establishing and moving a group of items – Having items discharged from plural distinct outlets into group
Patent
1988-11-07
1989-11-14
Valenza, Joseph E.
Conveyors: power-driven
Conveyor system for establishing and moving a group of items
Having items discharged from plural distinct outlets into group
1984701, 1984711, 1984741, B65G 5700
Patent
active
048801020
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device which is intended for transferring articles, preferably absorbent bodies intended for diapers or the like, from a first conveyor to a second conveyor, and which comprises a plurality of transporting devices which are capable of rotation about a rotational axis and which during their rotation are intended to collect articles from a first conveyor at a first location on the rotational path and to hold the articles firmly until reaching a second location on said path, at which location the articles are transferred to the second conveyor. More specifically the invention relates to a device, which transfers articles successively to the second conveyor at a mutual spacing between the articles different to the corresponding spacing on the first conveyor.
With known arrangements of similar kinds the transporting devices comprises a plurality of suction openings which are arranged circumferentially around a drum and which are connected with a source of vacuum along part of the curvilinear path rotated by the drum, wherewith absorption bodies or pads are sucked firmly in the openings and accompany the drum in its rotary movement and are subsequently deposited onto a continuous conveyor consisting of liquid-impermeable material. With an arrangement of this kind, the spacing between respective absorption bodies deposited on the moving conveyor can be varied, by changing the rotational speed of the drum and/or by changing the forward speed of the moving conveyor.
However, when the distance between the advanced absorption bodies to be picked up by the drum is short in relation to the interspacing desired between respective bodies when deposited onto the moving conveyor, these variation possibilities are, in many instances, insufficient to fulfill requirements and desiderata related with the technicalities of manufacture. For example, when manufacturing diapers or corresponding products which incorporate absorption bodies, or pads, it is difficult when using machines known hitherto to fulfill technical manufacturing requirements relating to the speed of manufacture.
The object of the present invention is to eliminate these drawbacks and to provide an arrangement for transferring articles from a first conveyor to a second conveyor, with which the articles are deposited at an interspacing which is different to the interspacing of the articles when collected.
This object is achieved in accordance with the invention by means of an arrangement having the characteristic features set forth in claim 1. This arrangement affords a neat and particularly flexible solution to the aforesaid problems. The construction is also relatively simple, robust and reliable and is therewith also favourable from the aspect of manufacture.
The independent claims define an advantageous embodiment of the invention in which the article transporting devices are carried on arms which are pivotally mounted in a rotatable housing and the outer ends of which are movable towards and away from one another during rotary movement of the housing and which will thus be located at varying distances from one another during a full turn of the housing, e.g. will lie very close together when collecting articles and at a maximum distance apart when depositing articles.
So that the invention will be more readily understood, a preferred embodiment of an article transfer device constructed in accordance with the invention will now be described with reference to the accompanying drawings, in which
FIG. 1 illustrates a part of a diaper manufacturing plant in which an inventive article transfer device is used;
FIG. 2 illustrates the principle construction of one embodiment of an inventive transfer device;
FIG. 3 is a front view, partly in section, of one embodiment of an inventive transfer device;
FIG. 4 is a side view, partly in section, of the device illustrated in FIG. 3; and
FIG. 5 illustrates an inventive variant of the embodiment illustrated in FIG. 3.
FIG. 1 illustrates an application of the invention in which absorption bod
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