Presses – Plural presses – With material transfer from press to press
Patent
1998-04-30
1999-12-14
Gerrity, Stephen F.
Presses
Plural presses
With material transfer from press to press
724051, 1986211, 414752, B30B 1530, B21D 4305
Patent
active
060003278
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a work transporting apparatus of a transfer press which includes a work transporting apparatus for feeding works into a press body and a transfer feeder for sequentially transporting works into respective processing stations in the press body.
2. Description of the Related Art
Conventionally, in a transfer press having a plurality of processing stations in a press body, a transfer feeder for sequentially transporting works to respective processing stations is provided.
Furthermore, on the upstream side of the press body, a disc stacker for separating stacked works one by one, is arranged. The work separated by the disc stacker is fed into the press body by a work transporting apparatus, and is subsequently transported into respective processing stations by the transfer feeder to be shaped in the respective processing stations.
The transfer feeders are arranged within the press body and are operable to transport the works into the respective processing stations. The transfer feeders are disclosed in Japanese Unexamined Patent Publication (Kokai) No. Heisei 6218459 and Japanese Unexamined Patent Publication No. Heisei 6-262280, for example.
The transfer feeder disclosed in the former publication has a pair of lifting beams extending in a feeding direction, which is vertically movable by a lift mechanism. A plurality of cross-bar carriers are supported on the lifting beams. The cross-bar, carriers are connected to each other and are reciprocally moved in the feeding direction by a feed mechanism arranged at the upper portion on an upstream side of the press body. In conjunction therewith, a cross-bar having a work suction means is transversely extended between adjacent cross-bar carriers. Then, the lift mechanism and the feed mechanism are arranged at the upper portion on the press body.
While the transfer feeder disclosed in the later publication has substantially the same construction as the transfer feeder disclosed in the former publication, the feed mechanism is arranged at the lower portion on an upstream side or a downstream side of the press body.
Meanwhile, in all of the conventional transfer feeders, while a lifting operation of the cross-bars is performed by the lift mechanism taking a servo motor as a driving source, and a feeding operation thereof is performed by the feed mechanism driven by the driving power taken from the press body, another driving source is employed for a work carrying-in or delivery apparatus which feeds the works into the press body. Thus, due to separate systems, the overall driving system becomes quite complicated and expensive.
On the other hand, in the case of the transfer feeder disclosed in the foregoing publication, because of a structure, in which the feed mechanism is directly coupled with the slide driving mechanism, there is no space between the slide driving mechanism and the feed driving mechanism to arrange a clutch which is necessary for solely driving the transfer feeder. Furthermore, since the feed mechanism projects from the front side of the press body, problems are encountered in that an upper frame becomes large and complicated, and, the crane may interfere with the foregoing feed mechanism upon exchanging dies, thus a wide space is necessary for locating the die exchanging position distant from the press body so as to avoid interference is required.
Furthermore, because of the construction in which the driving source of the lift mechanism is arranged at the upper portion on the upstream side or the downstream side of the press body and the respective lifting rods are driven up and down by the driving source, an equalizer means for establishing a synchronization of the respective lifting rods becomes necessary, thus making the construction complicated. Furthermore, vibration of the lifting rods and so forth may be amplified by play caused in the equalizer means and may be a cause of noise and mis-feeding. In addition, since a large size and large capacity servo motor is req
REFERENCES:
patent: 3707908 (1973-01-01), Merk et al.
patent: 4354790 (1982-10-01), Karl
patent: 4981031 (1991-01-01), Schneider et al.
patent: 5595111 (1997-01-01), Michael et al.
patent: 5649443 (1997-07-01), Shiroza et al.
patent: 5730278 (1998-03-01), Baba et al.
Kawamoto Kiichirou
Moriyasu Takashi
Nishida Kenji
Noda Shigekazu
Gerrity Stephen F.
Komatsu Ltd.
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