Article dispensing – With orienting – Selective separation from supply
Patent
1984-01-06
1986-07-22
Bartuska, F. J.
Article dispensing
With orienting
Selective separation from supply
221188, B23Q 712, B65H 900
Patent
active
046014080
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for the positioning and individual feeding of nails from a nail receiving container into which the nails are filled, up to a mechanical device for applying the nails.
Such devices are known in which the nail filling container performs a rocking or oscillating movement about the horizontal plane, such that the nails are displaced back and forth in the container whose bottom is provided with one or more slots into which the nails which happen to be located at the slot or slots and are oriented in the longitudinal direction thereof, can swing into place so as to be suspended in a row by their heads. At the oscillating movement of the container these nails will slide back and forth in the slot. The container pivots about an axis at its front edge and the nails, at this edge, are fed from the movable slots in the pivoting container out into stationary slots which are downwardly sloping towards a discharge device. This device moves the nails laterally and releases them over a collecting funnel from which the nails are conveyed in hoses or tubes to the starting position for the mechanical nailing operation.
Positioning and feeding devices of this type suffer from several drawbacks, for instance in that nails in the filling container will slide back and forth in the slot such that they may get stuck and cause wear, and also in that the nails located in the slot of the pivoting filling container will swing to and fro with respect to the nails suspended in the stationary feed slot with the additional risk of jamming and obstruction of the nails in their slots. From the stationary sloping feed slots the nails are individually fed laterally by means of a reciprocating shuttle which feeds the nails to a conveyor supplying them to the nailing site. In this feed mechanism, too, there is a great risk that the nails will jam and obstruct the function of the device.
In addition, a device of this type is restricted to certain types of nails, especially standard nails provided with heads.
The present invention completely overcomes these drawbacks and offers advantages which ensure high operational reliability in a nail positioning and feeding device and also a long life of the equipment.
According to a first aspect of the invention, this object is achieved by the provision of a device for the positioning and individual feeding of nails, comprising a nail receiving container which is pivotal upwards and downwards about a horizontal pivot shaft and in the bottom of which there are formed one or more slots which are substantially perpendicular to said pivot shaft and in which the shanks of the nails can be accommodated while the nails are maintained suspended by their upper parts, for instance their heads, the device being characterized in that each slot passes and extends beyond the wall located at the discharge end of the container, and forms a feed slot which protrudes outside the container and in the end portion of which there is provided a stop of such a design that the outermost nail of the fed nails is maintained in a correct position at the outermost end of said end portion which is spaced from said pivot shaft such that the end portion will perform a substantially vertical oscillating movement between a lower end position and an upper end position.
According to a second aspect of the invention, the end portion of the feed slot has a depression which is of such a length that only one nail can be received in the depression between the stop and the shoulder of the depression which is located at the proximal end thereof with respect to the pivot shaft.
According to a third aspect of the invention, the end portion, at the sides of the slot, has recesses of such a size that they will leave, at the upper portion of the slot, guide strips which are adapted to carry the nails and which, transversely of the direction of feed, have an outer dimension which is smaller than the outer dimension of the nail portion, for instance the diameter of the nail head, which supports the nail in the slo
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patent: 509732 (1893-11-01), Hahn
patent: 1257550 (1918-02-01), Townsend
patent: 1812501 (1931-06-01), Strobel
patent: 1888851 (1932-11-01), Donovan et al.
patent: 2431831 (1947-12-01), Sabaitis
patent: 3026000 (1962-03-01), Haberstump
patent: 3269594 (1966-08-01), MacKenzie et al.
Billing Lars T.
Olofsson Stig
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