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| Number | Title | Issue Date |
| 7225693 | Slide drive device for a press A slide drive device for a press changes a slide stroke without a changing either a top or bottom dead center position of a slide. The slide drive device allows stroke adjustment without a loss of left-right balance in the slide drive device. An adjusting mechanism ... | 06/05/2007 |
| 6405576 | Linear slide press machine A slide-type pressing machine has a stroke length adjustment mechanism in which: changing of the stroke length does not effect the bottom dead center position of the press, adjustment is simplified, and the press is suitable for high speed pressing operat... | 06/18/2002 |
| 5423202 | Transfer press A transfer press provided with a three-dimensional transfer system and a moving bolster. In the press, there are provided one each of four corners of the bolster an advancing/returning unit for performing an advancing/returning operation on a workpiece, a... | 06/13/1995 |
| 5365829 | Transfer driver for pressing machine An apparatus for operating feed bars to move a workpiece between stages of a pressing machine includes cylinder devices. Each of the cylinder devices serves to move the feed bars linearly and each has a respective absolute encoder. The cylinder devices in... | 11/22/1994 |
| 5351576 | Apparatus for adjusting slide stroke of press A crankshaft mechanism for use with a press having a slide member, which includes an eccentric crankshaft. In one form of the mechanism, the crankshaft has a cylindrical eccentric portion. An eccentric sheave is rotatably mounted on the circumference of t... | 10/04/1994 |
| 5269163 | Device for correcting die spacing at bottom dead center of a press An apparatus for use with a press which corrects the spacing between an upper die and a lower die when the press is at bottom dead center. The apparatus includes a detector which is operative during each cycle of reciprocal movement of the press slide to ... | 12/14/1993 |
| 5226337 | Slide driving apparatus of press machine A Slide driving apparatus of press machine, wherein a main gear 3 as a rotational drive member and a lever member 10 as a driven member are opposed to one another in a eccentric state which an axes O1 and O2 are separated, the main g... | 07/13/1993 |
| 5218901 | Mechanism for obtaining precise registration between top and bottom dies in a press A mechanism for guiding a slide of a press machine is disclosed. The slide is connected to a crank shaft extending laterally through connecting rods. The press further includes a bolster supporting a bottom die and a top die attached to the slide. An uppe... | 06/15/1993 |
| 5140895 | Valve mechanism for controlling a pressure difference between an upper and a lower chamber of a hydraulic cylinder for a die cushion for a press A double acting hydraulic cylinder is a die cushion for a press, with an upper and a lower chamber in communication with each other and with a differential pressure between the two chambers automatically controlled by a valve mechanism. With the different... | 08/25/1992 |
| 5105684 | Crank driving device for press A crank driving device for a press designed in serial type eccentric structure. An eccentric element of crankshaft connected to a connecting rod, and an eccentric mechanism to provide a second eccentricity, are separated in the axial direction of the cran... | 04/21/1992 |
| 5100113 | Pneumatic die cushion equipment A closed type cylinder unit, instead of the open-to-atmosphere type cylinder unit of conventional equipment forms part of the die cushion apparatus. Based on the principle that the die cushion capability by the closed type cylinder unit is determined by t... | 03/31/1992 |
| 4800777 | Dynamic balancing device for press A dynamic balancing device for a press is provided for balancing the inertia forces generated by the reciprocating parts of the press using balancing weights. A connecting rod is mounted around the crank of the drive shaft and has one end pivotally connec... | 01/31/1989 |
| 4741195 | Apparatus for clamping and unclamping feed bars for a transfer press In a transfer press having feed bars and a press drive, an improved feed bar driving apparatus has a vertical rod reciprocally movable in association with the press drive and having a threaded portion, a drive means to the vertical rod means for rotating ... | 05/03/1988 |
| 4711169 | Balancing device for press A balancing device for a press of the type in which a slide moves up and down with respect to a bolster, the balancing device having an upward urging device mounted on the press and engageable with the slide to urge the slide upwardly when the die height ... | 12/08/1987 |
| 4677908 | Slide adjusting device for a press A press having a slide adjusting device and which has a press crown, a crank shaft mounted on the crown and having an eccentric portion, a connecting rod mounted on the eccentric portion, a slide adjusting screw connected to the connecting rod, a worm whe... | 07/07/1987 |
| 4393682 | Feed bar driving apparatus for a transfer press A feed bar driving apparatus for a transfer press. A pair of carriers is located at each of the ends of two parallel feed bars. The carriers each have vertically movable feed bar receptacles thereon for holding the feed bars for permitting them to slide f... | 07/19/1983 |
| 4259052 | Transfer press The transfer press has a blank-supply mechanism for supplying blanks which are materials for every kind of part to be manufactured by pressing, one by one to a press, a blank-transport mechanism for carrying blanks from the blank-supply mechanism to the p... | 03/31/1981 |
| 4149400 | Die change device in a transfer press A die change mechanism in a transfer press is disclosed for carrying feed bars with dies supported thereon into and out of the press. The mechanism performs cyclic clamping, advancement, unclamping and return movements on the feed bars which feed work pie... | 04/17/1979 |
