Apparatus for forming threads on pipe ends

申请号 US3128817D 申请日 公开(公告)号 US3128817A 公开(公告)日 1964-04-14
申请人 发明人
摘要
权利要求
1. PIPE FORMING APPARATUS COMPRISING A FRAME, A PLURALITY OF PIPE FORMING STAGES, EACH ADAPTED TO RECEIVE A PIPE AXIALLY ALIGNED WITHIN THE STAGE, DISPOSED ON THE FRAME IN AXIAL AND TRANSVERSE ALIGNMENT, THE STAGES INCLUDING; A PIPE UPSETTING STAGE HAVING A PIPE SUPPORTING HEAD AND A PIPE UPSETTING HEAD, MEANS TO ENGAGE THE UPSETTING HEAD AND A PIPE RECEIVED INTO THE UPSETTING STAGE INTO UPSETTING RELATION AND DISENGAGE THE PIPE AND UPSETTING HEAD TO A REST POSITION, ELECTRICAL CONTROL MEANS TO CONTROL THE CYCLE OF ENGAGEMENT, UPSETTING OPERATION, AND DISENGAGEMENT OF THE UPSETTING STAGE WITH THE PIPE AND TO PREPARE THE UPSETTING STAGE FOR A SUCCESSIVE UPSETTING CYCLE, AND LINKAGE MEANS TO CAUSE COMPLETION OF THE UPSETTING CYCLE WITH NO PIPE RECEIVED IN THE UPSETTING STAGE; A BEAD ROLLING STAGE HAVING A BEADING HEAD AND A RESILIENT POSITIONING HEAD, SAID BEADING HEAD HAVING A FIRST BEADING DIE MOUNTED ON A SHAFT SUPPORTED BY A FIXED BEARING, A SECOND BEADING DIE MOUNTED ON A SHAFT SUPPORTED BY A BEARING IN AXIALLY PARALLEL MOVEABLE RELATION TO THE FIRST BEADING DIE, AND TRANSMISSION MEANS ADAPTED TO ROTATE THE BEADING DIES AT LIKE PERIPHERAL SPEEDS, MEANS TO LONGITUDINALLY POSITION THE WALL OF A PIPE RECEIVED IN THE BEAD ROLLING STAGE AND THE BEADING DIES INTO A BEADING POSITION AND RETURN THE PIPE AND THE BEADING DIES TO A REST POSITION, MEANS TO BRING THE BEADING DIES INTO BEAD FORMING ENGAGEMENT WITH THE WALL OF THE PIPE AND RETURN THE BEADING DIES TO A REST POSITION, THE ELECTRICAL CONTROL MEANS CAUSING A CYCLE OF POSITIONING THE PIPE LONGITUDINALLY, BRINGING THE BEADING DIES INTO BEAD FORMING ENGAGEMENT, HOLDING THE BEADING DIES IN BEAD FORMING ENGAGEMENT FOR A PRESELECTED PERIOD, RETURNING THE BEADING DIES TO REST POSITION, AND RETURNING THE PIPE TO REST POSITION, AND PREPARING THE BEAD ROLLING STAGE FOR A SUCCESSIVE BEADING CYCLE, AND LINKAGE MEANS TO CAUSE COMPLETION OF THE BEADING CYCLE WITH NO PIPE RECEIVED IN THE BEAD ROLLING STAGE; A FEMALE THREAD ROLLING STAGE HAVING A THREADING HEAD AND A RESILIENT POSITIONING HEAD, SAID THREADING HEAD HAVING A FIRST THREADING DIE MOUNTED ON A SHAFT SUPPORTED BY A FIXED BEARING A SECOND THREADING DIE MOUNTED ON A SHAFT SUPPORTED BY A BEARING IN AXIALLY PARALLEL MOVEABLE RELATION TO THE FIRST THREADING DIE, AND TRANSMISSION MEANS ADAPTED TO ROTATE THE THREADING DIES AT LIKE PERIPHERAL SPEEDS, MEANS TO LONGITUDINALLY POSITION THE WALL OF A PIPE RECEIVED IN THE FEMALE THREAD ROLLING STAGE AND THE THREADING DIES INTO A THREAD ROLLING POSITION AND RETURN THE PIPE AND THE THREADING DIES TO A REST POSITION, MEANS TO BRING THE THREADING DIES INTO THREAD FORMING ENGAGEMENT WITH THE WALL OF THE PIPE AND RETURN THE THREADING DIES TO A REST POSITION, THE ELECTRICAL CONTROL MEANS CAUSING A CYCLE OF POSITIONING THE PIPE LONGITUDINALLY, BRINGING THE THREADING DIES INTO THREAD FORMING ENGAGEMENT, HOLDING THE THREADING DIES IN THREAD FORMING ENGAGEMENT FOR A PRE-SELECTED PERIOD, RETURNING THE THREADING DIES TO REST POSITION, RETURNING THE PIPE TO REST POSITION, AND PREPARING THE FEMALE THREAD ROLLING STAGE FOR A SUCCESSIVE ROLLING CYCLE, AND LINKAGE MEANS TO CAUSE COMPLETION OF THE THREADING CYCLE WITH NO PIPE RECEIVED IN THE FEMALE THREAD ROLLING STAGE; A MALE THREAD ROLLING STAGE HAVING A THREAD ROLLING AND A RESILIENT POSITIONING HEAD, SAID THREADING HAVING A FIRST MALE THREADING DIE MOUNTED ON A SHAFT SUPPORTED BY FIXED BEARING AND A SECOND MALE THREADING DIE MOUNTED ON A SHAFT SUPPORTED BY A BEARING IN AXIALLY PARALLEL MOVEABLE RELATION TO THE FIRST THREADING DIE, AND TRANSMISSION MEANS ADAPTED TO ROTATE THE THREADING DIES AT LIKE PERIPHERAL SPEEDS, MEANS TO LONGITUDINALLY POSITION THE WALL OF A PIPE RECEIVED IN THE THREAD ROLLING STAGE INTO A THREADING POSITION ADJACENT THE BEAD FORMING BY THE BEADING STAGE AND RETURN THE PIPE AND THE THREADING DIES TO A REST POSITION, MEANS TO BRING THE THREADING DIES INTO THREAD FORMING ENGAGEMENT WITH THE WALL OF THE PIPE AND RETURN THE THREADING DIES TO A REST POSITION, THE ELECTRICAL CONTROL MEANS CAUSING A CYCLE OF POSITIONING THE PIPE LONGITUDINALLY, BRINGING THE THREADING DIES INTO THREADING ENGAGEMENT, HOLDING THE THREADING DIES IN THREADING ENGAGEMENT FOR A PRE-SELECTED PERIOD, RETURNING THE THREADING DIES TO REST POSITION, LONGITUDINALLY RETURNING THE PIPE TO A REST POSITION, AND PREPARING THE MALE THREAD ROLLING STAGE FOR A SUCCESSIVE ROLLING CYCLE, AND LINKAGE MEANS TO CAUSE COMPLETION OF THE THREADING CYCLE WITH NO PIPE RECEIVED IN THE MALE THREAD ROLLING STAGE; AND A PIPE TRANSFER MEANS HAVING A MOVEABLE CONVEYOR MEANS TAUTLY DISPOSED ON THE FRAME IN TRANSVERSE RELATION TO THE AXES OF THE PIPE FORMING STAGES, PIPE SUPPORTING TONGS DISPOSED IN ALIGNMENT TO THE AXIS OF THE FORMING STAGES, EACH OF SAID TONGS ADAPTED TO DIVERGE AT THE OUTER ENDS OF THE FRAME INTO PIPE RECEIVING AND EJECTING RELATION AND TO COVEREGE BETWEEN THE ENDS INTO PIPE SUPPORTING RELATION, MEANS TO MOVE THE CONVEYOR MEANS THE DISTANCE FROM THE AXIS OF ONE FORMING STAGE TO THE NEXT, THE ELECTRICAL CONTROL MEANS CAUSING THE CONVEYOR MEANS TO MOVE EACH TIME THE FORMING STAGES HAVE ALL COMPLETED THEIR FORMING CYCLES AND RETRACTED TO REST POSITION.
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