Transfer mechanism for multiple punch presses
AssigneeHatebur Umformmaschinen AG
InventorRaymond Schoenenberger
Life of this patent
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Abstract
The present invention relates to transfer mechanism for multiple punch presses with two co-operating pairs of conveyor tongs which are fixed to a carrier element. The carrier element is movably mounted in a housing and driven to-and-fro to the operating rhythm of the punch press. The carrier element includes a bore effective to direct a lubricating fluid therethrough. Lubricating lines supply lubricating fluid to the bore at a desired fluid pressure. The bore has an outlet opening contiguous to the structure which incorporates the conveyor tongs. In the event that the conveyor tongs break away from the carrier element, the outlet opening of the bore is uncovered and the fluid pressure drops. The power supply to the press and the lubricating fluid supply are stopped in response to such a pressure drop.
Claims10
A transfer mechanism for a multiple punch press, said mechanism comprising:
- (a) two cooperating pairs of conveyor tong means,
- (b) holding means for connecting each pair of tong means to a movably mounted carrier member,
- (c) each said carrier member including a bore effective to direct a lubricating fluid therethrough,
- (d) lubricating fluid lines connected to supply lubricating fluid to said bore at a desired fluid pressure,
- (e) said bore having an outlet opening contiguous to said tong means while maintaining said fluid pressure,
- (f) said holding means being breakable upon the occurrence of a predetermined maximum resistance to cause tong means to break away from the carrier member and uncover said bore outlet opening, and
- (g) actuation means responsive to a drop in pressure within said lubricating fluid lines when said bore outlet opening is uncovered,
- (h) said actuation means being effective to stop the press when said drop in pressure occurs.
Dependencies are inferred from the claim text.