| 摘要 |
Apparatus includes strip material supply means, a press, and a straightening roller stand (i.e., a straightener having rollers) disposed adjacent to a mechanical press or other material processing device to which strip material is introduced in discrete steps. The strip material is fed from a reel through straightening rollers and then to the press die set, with a slack loop of material in a temporary material storage locale between the straightening rollers and the die set. A positive displacement fluid motor is used to drive the straightener, the fluid motor being connected with fluid flow control means that in turn are controlled in synchronism with operation of the press or other material processing device. A supercharging pump maintains the fluid system charged while the pump, in effect, meters fluid to the motor. Hydraulic circuit means are provided to "fine tune" the hydraulic system and synchronize the fluid motor in a desired manner. Detector means are provided and control the slack loop to maintain it within predetermined limits. Means associated with the detector means operate to divert or otherwise control leakage fluid from the motor inlet when the slack loop exceeds a predetermined maximum length, and to supply additional fluid to the fluid motor inlet when the slack loop shortens to less than a predetermined minimum length.
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