Metal working – Plural diverse manufacturing apparatus including means for... – Binding or covering and cutting
Patent
1991-06-18
1993-07-13
Bilinsky, Z. R.
Metal working
Plural diverse manufacturing apparatus including means for...
Binding or covering and cutting
29813, 414224, 414751, B23P 1900
Patent
active
052262286
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to an apparatus adapted to hold a part at the front end of a feed rod and feed it to an intended place, said apparatus being utilized in a field where such parts as distance pieces and projection nuts having projections are used.
BACKGROUND ART
As regards an apparatus of the type in which a part is held at the front end of a feed rod and the latter is stroked to an intended place, there is known one in which a part is kept on standby in advance at a predetermined place; a feed rod is advanced during which the feed rod holds the part at its front end and then the feed rod continues advancing. There is also known another in which a part coming in through a part feeding tube is directly moved onto the front end of the feed rod and is held thereon.
In such prior art, there has been a problem that said part cannot be accurately held on the front end of the feed rod. In the former type described above, even if the standby position of the part is slightly deviated from the stroke axis of the feed rod, the correct holding of the part cannot be attained. In the latter type described above, if the front end of the part feeding tube is not correctly positioned with respect to the front end of the feed rod, the part cannot be correctly held. Since the related members are movable relative to each other, it is very difficult to correctly establish the positional relationship described above. Further, holding the part during the stroking of the feed rod or holding the part which has come in with a high momentum results in the part colliding with the front end of the feed rod; in some cases, the part is repulsed.
SUMMARY OF THE INVENTION
The present invention has been presented to solve the above problems. The first embodiment of the invention is an apparatus adapted to hold a part at the front end of a feed rod and feed it to an intended place. The invention is characterized in that a locking portion at the end of a feed tube is disposed in opposed relationship to the holding portion and in that the apparatus includes an operating rod adapted to move into the locking portion to transfer a part from the locking portion to the holding portion. After the part has been positioned at the locking portion at the end of the feed tube end, it is moved to the holding portion at the front end of the feed rod. According to the second embodiment of the invention, a magnet is installed adjacent the holding portion at the front end of the feed rod to make the holding of the part more reliable; said magnet being movable from the holding portion. Thus, when the feed rod is advanced to a predetermined place, the magnet is spaced from the part to release the latter from the front end of the feed rod.
According to the present invention, the front end of the feed rod and the locking portion of the feed tube are put in opposed relationship to each other, and since the operating rod acting on the part in the locking portion is provided, the positioning of the part is effected before the latter is fed into the holding portion of the feed rod. Then, the part is moved into the holding portion by the operating rod. Therefore, by accurately setting the standby position of the part in the holding portion and moving it by the operating rod, the part is reliably fed into the holding portion. As a result, reliable feeding of parts is attained.
Further, since the holding action is effected by conveying the part until the latter is close to the front end of the feed rod, reliable holding is attained without involving the phenomenon of the part being repulsed as described in the Background Art.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a longitudinal sectional side view of the present invention;
FIG. 2 is a sectional view taken along the line 2--2 in FIG. 1;
FIG. 3 is a three-dimensional view of the holding portion;
FIG. 4 is a cross sectional plan view;
FIG. 5 is a longitudinal sectional side view of the present invention;
FIGS. 6 and 7 are longitudinal sectional side views of further embodiments of the
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