A rivet feeding assembly for feeding a plurality of rivets defining a set, in unison to a multiple-riveting machine having a press operably co-operable with a plurality of strikers and complementary rivet-receiving anvils in a machine riveting zone to effect multiple riveting by pressing, the assembly comprising: a track means comprising a plurality of rivet-retaining guides for retaining the rivets in a rivet heads-up orientation as a plurality of horizontal rows of rivets wherein each row defines a set of rivets; a selector means co-operable with the track for receiving a single set of rivets and located away from the machine riveting zone as to not interfere with the pressing; and a transfer member co-operable with the selector for receiving and transferring the single set of rivets to the machine riveting zone. The apparatus provides reliable rivet feeding to the rivet tools, improved conventional set-up and change-over time and cost of tooling and the ability to deliver the rivets to the rivetting zone in any desired pattern by a single feeding system.
A rotary hopper includes a door, which is pivotally mounted on the main mounting plate for pivoting about a vertical axis, having a transparent element to enable viewing of the interior of the rotary hopper. The pivotally mounted door enables easy access to the interior of the hopper. On the opposite side of the main mounting plate from the door, a shaft is supported for rotatably supporting a cone having a gauging ring with gauging grooves mounted thereon. A recess in the cone, the interior of the gauging ring, and the interior of the transparent element on the door form a reservoir in the rotary hopper for the fastener elements. On the side of the main mounting plate having the door, the main mounting plate has a vertical groove to receive the fastener element in each of the gauging grooves when each of the gauging grooves is aligned therewith during rotation of the gauging ring. The vertical groove communicates with a setting station of an attaching apparatus.
An apparatus for setting up fastener elements having a shaft and a head, e.g. rivets or the like, wherein the shaft length is equal to or less than the head diameter, the setting-up being ahead of a press-bar or hammer of a fastener-driving machine, which press-bar or hammer is adjusted to the head of the fastener elements. The apparatus includes a transfer mechanism which transports fastener elements in succession, by means of a flow of a medium, into an intermediate position in the vicinity of the press-bar or hammer. A radially elastic holding device is disposed in the fastener-driving machine, which holding device is movable with the press-bar or hammer and is capable of holding the head in an axial orientation with respect to the press-bar or hammer at a location ahead of the press-bar or hammer, i.e. downstream in the flow of driving force exerted by the press-bar or hammer. The transfer mechanism transfers a transported fastener element to and into the holding device.
The machine includes a movable carriage (5) carrying an application gun (8) filled with pins for application, which is movable above a work station composed of a table (1) carrying an endless belt (2). The machine is provided with a rack (10) for storing a plurality of guns (8) pre-filled with pins, which rack can be accessed by a gripping holder (7) carried by the carriage (5). A detector mounted on the gun can ascertain the absence of a pin in the frame at the application location and instruct the movement of the holder towards the rack.
A riveting system for hammering a set of nails along a path having a rotatable upper table with a plurality of riveting mechanisms positioned along a plurality of radii on the upper table and a lower table having a plurality of upset members positioned along a plurality of radii on the lower table.
