Automatic die lubricator for drop hammers

Abstract

Abstract AN AUTOMATIC DIE LUBRICATOR FOR DROP-TYPE HAMMERS WHEREIN NOZZLES ARE POSITIONED TO SPRAY LUBRICATION OVER THE DIE FACES AND A CONTROL SYSTEM IS PROVIDED TO ACTUATE THESE NOZZLES AFTER THE DELIVERY OF EACH SERIES OF A PREDETERMINED NUMBER OF WORKING BLOWS. THE CONTROL SYSTEM INCLUDES PROXIMITY SWITCHES WHICH ARE RESPONSIVE TO THE MOVEMENT OF THE RECIPROCATING UPPER DIE FOR PROVIDING A CONTROL SIGNAL UPON THE DELIVERY OF EACH BLOW, AND A STEPPING SWITCH WHICH IS ADVANCED ONE STATION BY EACH CONTROL SIGNAL UNTIL A FINAL STATION IS REACHED WHEREUPON A CIRCUIT FOR ACTUATING THE LUBRICATING NOZZLES IN CLOSED. THE STEPPING SWITCH IS THEN RESET AND THE CYCLE REPEATS WITHOUT INTERRUPTION. TO CONTROL THE INTENSITY OF THE WORKING BLOWS, THE CONTROL SYSTEM INCLUDES A TIMER WHICH HAS AN OFF-TIME CIRCUIT TO GOVERN THE MOMENT OF INITIATION OF EACH CONTROL SIGNAL AND AN ON-TIME CIRCUIT TO GOVERN THE DURATION OF EACH. THE TIMED CONTROL SIGNALS ARE THEN EMPLOYED TO ACTUATE THE UPPER DIE LIFTING MECHANISM. THE TIME MAY HAVE SINGLE ON-TIME CIRCUIT SO THAT EACH CONTROL SIGNAL IS OF THE SAME DURATION WHEREBY EACH BLOW IS DELIVERED FROM THE SAME HEIGHT, OR A DIFFERENT ON-TIME CIRCUIT FOR EACH BLOW OF A PREDETERMINED BLOW PATTERN WHEREBY SUCH BLOWS MAY BE DELIVERED FROM VARYING HEIGHTS. IN THIS LATTER CASE, THE DIFFERENT ON-TIME CIRCUITS ARE EACH CONNECTED TO A RESPECTIVE STATION OF A STEPPING SWITCH WHICH IS ADVANCED ONE STATION IN RESPONSE TO THE INTITATION OF EACH CONTROL SIGNAL AND WHICH IS RECYCLED TO THE FIRST STATION BY THE RESET MEANS IN RESPONSE TO THE INITIATION OF THE CONTROL SIGNAL FOLLOWING THE DELIVERY OF THE COMPLETE PATTERN.

Inventors

• 👤 Lawernce R Tetzloff
• 👤 Lowell L Crom

Bibliographic Details