Elongated-member-driving apparatus – With means to move or guide member into driving position – Including carrier feed means for a plurality of members
Patent
1985-01-25
1986-10-07
Bell, Paul A.
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including carrier feed means for a plurality of members
227 51, B25C 502, B23P 1900
Patent
active
046154752
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
(1) Field of the Invention
This invention relates to improvements in feeders for headed fasteners such as rivets, and to riveting machines incorporating such feeders.
(2) Brief Description of the Prior Art
Our Australian Pat. Nos. 488189 and 504196 (and corresponding British Pat. Nos. 1,502,475 and 1,538,027 respectively) disclose methods of and apparatus for riveting where the rivets punch their own holes through the work pieces to be joined.
U.S. Pat. No. 4,410,103 a method and apparatus for sequentially feeding rivets to such riveting machines from a tape charged with rivets according to the method and apparatus disclosed in U.S. Pat. No. 4,404,742.
These riveting machines and feeders for directing rivets to them have been found to be efficient and generally satisfactory in use, but they are fairly bulky and expensive to manufacture and install.
SUMMARY OF THE PRESENT INVENTION
The present invention has been devised with the general object of providing a feeder for rivets or other headed fasteners which is particularly simple, economical and compact, which is applicable to a readily portable riveting machine, and which is very convenient to use and efficient and positive in action.
With the foregoing and other objects in view, the invention resides broadly in a feeder for sequentially feeding, from a flexible carrier tape, headed fasteners driven therethrough in equally spaced intervals, including: the delivery passage, passage, expelling a fastener therefrom into the delivery passage, tape, advancing plunger from an advanced position to a retracted position, to its advanced position upon the retraction of the plunger, and oscillations of the actuator, to engage the advance sequentially towards the discharge passage, the fasteners of the carrier tape.
The invention further resides in a rivet setting machine incorporating the feeder set out above.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a partly broken-away side elevational view of a rivet setter incorporating a rivet feeder according to the invention,
FIG. 2 is a sectional view, to larger scale, along side 2--2 in FIG. 1, showing the device prior to ejection and setting of a rivet,
FIG. 3 is a sectional view showing a rivet fed and set in a workpiece,
FIG. 4 is a plan view of the actuator of the device shown in FIGS. 1, 2 and 3,
FIG. 5 is a side elevational view of the actuator,
FIG. 6 is a view of the actuator from below,
FIG. 7 is an end view of the actuator, and
FIG. 8 is a sectional view of part of a rivet setter according to a modification of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The rivet setter includes a C-frame 10 having upper and lower jaws 11 and 12 rigidly interconnected by a tension post 13 and a compression post 14, both of which are interchangeable with others of different lengths for adjustment of the frame to suit different requirements. The upper jaw 11 is provided with a cylindrical clamp collar 15, the lower jaw with a coaxial cylindrical holder 16 for a rivet upsetting die 18, which is secured by a screw 19 and interchangeable with others of different axial length.
A hydraulic cylinder 20 is secured in axially adjustable manner in the clamp collar 15, being formed with a circumferential shoulder to bear on the top of the clamp collar, a spacer collar 21 then being fitted on the hydraulic cylinder from below and secured by a lock nut 22 screwed onto the bottom part of the cylinder. By fitting the spacer collar above, instead of below, the clamp collar, or by using shorter spacer collars above and below the clamp collar, the hydraulic cylinder may be adjusted axially.
The top of the hydraulic cylinder is closed by a plug 23, an elbow 24 having one arm engaged in a threaded axial hole through the plug having its other arm connected to a hydraulic pressure line (not shown) from any suitable preferably portable source (not shown) of hydraulic fluid under pressure.
A hollow plunger 25 is coaxially slidable in the cylinder 20, a bush 26 slidable in the cy
REFERENCES:
patent: 2680246 (1954-06-01), Rambo
patent: 2923937 (1960-02-01), Laucher
patent: 3698599 (1972-10-01), Fernstrom
patent: 3826419 (1974-07-01), Maestri
patent: 4014488 (1977-03-01), Potucek et al.
patent: 4410103 (1983-10-01), Fuhrmeister
Bell Paul A.
Neitek Pty. Ltd.
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