Mechanical die adjustment mechanism
AssigneeSweetheart Plastic, Inc.
InventorGaylord W. Brown
Life of this patent
Estimating the term…
Abstract
Apparatus for adjusting the rotary position of any selected one of a plurality of rotatable die bolts to control the position of a die lip and the size of a die opening adjacent the die lip comprising a reciprocable drive member movable in a to-and-fro path of travel and a plurality of bolt actuating members mounted on the drive member for movement therewith and for movement relative thereto between positions removed from the bolts and bolt drive positions in driving relation with any selected one of the bolts.
Claims29
A sheet die comprising:
- a die body having a pair of opposed, longitudinally extending die lips defining an elongate die opening through which plastic and the like is extruded in sheet form, one of said die lips being movable toward and away from the other of said die lips to adjust the size of said opening;
- means operatively associated with said die body, for adjusting the position of said one die lip including rotatable die bolt means on said die body for moving at least a portion of said one die lip toward and away from said other die lip;
- and
- die bolt drive means, operatively associated with said die bolt means, movable in a longitudinal to-and-fro path of travel, for selectively rotating said die bolt means in either direction of rotation about the rotational axis of said die bolt means, as said die bolt drive means moves in said to-and-fro path.
A sheeting die comprising:
- a die body having a pair of opposed die lips defining an elongate die opening through which plastic and the like is extruded in sheet form, one of said die lips being movable toward and away from the other of said die lips to adjust the size of said opening;
- a plurality of longitudinally spaced rotatable members operatively associated with said one die lip for controlling the position of said one die lip relative to the other die lip;
- and
- means, operatively associated with said rotatable members, for adjusting the rotary positions of a plurality of rotatable members to adjust the size of said opening comprising:
- drive means movable in a to-and-fro longitudinal path of travel along said opening;
- means mounted on said drive means, for movement therewith and relative thereto, for selectively rotating any selected one of said rotatable members as said drive means moves in said to-and-fro path of travel.
In an extrusion die for continuously producing a sheet of material which has a substantial width relative to its thickness, said die including a die body having a pair of opposed die lips defining an elongate opening, one of said lips being movable toward and away from the other lip to control the size of said opening, means for continuously forcing material through said opening to form said sheet, a plurality of rotatable members spaced along said opening and operatively arranged with said one die lip to adjust the positons of spaced apart portions of said one die lip as said rotatable members rotate, the improvement comprising:
- apparatus for adjusting the rotary positions of a selected one of said plurality of rotatable members to control the positions of selected portions of said die lip and the size of selected portions of said die opening comprising:
- drive means, operatively associated with said rotatable members, movable in a to-and-fro path of travel along said opening;
- a plurality of member actuating means mounted in spaced relation on said drive means for movement therewith and for movement relative thereto for selectively rotating on said drive means said rotatable members;
- and
- means on said drive means for selectively moving any selected one of said actuating means relative to said drive means to rotate any selected one of said rotatable members and control the position of a selected portion of said one die lip.
A sheet die comprising:
- a die body, having a pair of longitudinally extending opposed die lips defining an elongate die opening through which plastic and the like is extruded in sheet form, one of said die lips being movable toward and away from the other of said die lips to adjust the size of said opening;
- a plurality of longitudinally spaced rotatable members operatively associated with said one die lip for controlling the position of said one die lip relative to the other die lip;
- and
- means operatively associated with said rotatable members for adjusting the rotary positions of a plurality of rotatable members to adjust the size of said opening comprising:
- drive means, movable adjacent said die body in a to-and-fro longitudinal path of travel along said opening;
- means mounted on said drive means, for movement therewith and relative thereto, for selectively rotating any selected one of said rotatable members as said drive means moves in said to-and-fro path of travel.
Apparatus for adjusting the position of a die bolt which is rotatable about its axis, to control the size of a die opening comprising:
- reciprocable drive means movable in a to-and-fro forward and reverse path of travel;
- first lost motion connection means coupled to said drive means for selectively rotating such a bolt about its axis in one direction as said drive means moves in said forward path of travel;
- and
- second lost motion connection means coupled to said drive means for selectively rotating such a bolt about its axis in an opposite direction as said drive means moves in said forward path of travel;
- said first and second lost motion connection means comprising first and second ratchet pawls mounted on said reciprocable drive means for movement between positions removed from said bolt means and positions driving said bolt means, and actuable means, mounted on said reciprocable drive means, for selectively moving either selected one of said first and second pawl means from said removed positions to such bolt driving positions.
Apparatus for adjusting the rotary positions of a selected one of a plurality of longitudinally disposed rotatable die bolts operatively associated with a die lip to control the position of a die lip and the size of a die opening adjacent the die lip comprising:
- a frame;
- drive means movable on said frame in a to-and-fro longitudinal path of travel;
- a plurality of longitudinally disposed, bolt actuating means, mounted on said drive means for movement therewith and for movement relative thereto, for selectively rotating said bolts;
- and
- means on said drive means for selectively moving any selected one of said plurality of bolt actuating means relative to said drive means to rotate any selected one of said bolts;
- said bolt actuating means being mounted on said drive means for movement relative thereto between positions removed from such bolts and drive positions for rotatably driving such bolts;
- said means for selectively moving including means on said drive means for selectively moving any selected one of said plurality of bolt actuating means from said removed position to said drive position to rotate any selected one of such bolts;
- each of said longitudinally disposed bolt actuating means comprising first and second pawl members mounted on said drive means for movement in opposite directions between such removed positions and such drive positions;
- and
- means on said drive means for selectively driving said pawl members between such removed positions and such drive positions.
Apparatus for adjusting the rotary positions of a selected one of a plurality of longitudinally disposed rotatable die bolts operatively associated with a die lip to control the position of a die lip and the size of a die opening adjacent the die lip comprising:
- a frame;
- drive means movable on said frame in a to-and-fro longitudinal path of travel;
- a plurality of longitudinally disposed, bolt actuating means, mounted on said drive means for movement therewith and for movement relative thereto, for selectively rotating said bolts;
- and
- means on said drive means for selectively moving any selected one of said plurality of bolt actuating means relative to said drive means to rotate any selected one of said bolts;
- said bolt actuating means is mounted on said drive means for movement relative thereto between positions removed from such bolts and drive positions for rotatably driving such bolts;
- said means for selectively moving including means on said drive means for selectively moving any selected one of said plurality of bolt actuating means from said removed position to said drive position to rotate any selected one of such bolts;
- and
- means, operatively associated with said apparatus, for mounting said apparatus on such a die with a lost motion connection which permits relative expansion and contraction of such a die and said apparatus.
Apparatus for adjusting the rotary position of a plurality of longitudinally disposed, rotatable die bolts operatively associated with a longitudinally extending die lip to control the position of a die lip and the size of an elongate die opening comprising:
- a frame;
- a drive member mounted on said frame for reciprocable movement in a to-and-fro longitudinal path of travel;
- means operatively associated with said drive member for reciprocally driving said drive member in said to-and-fro path;
- bolt actuating means mounted on said drive member for movement therewith and for lateral movement relative thereto between a position removed from such bolts and a bolt driving position;
- and
- means operatively associated with said bolt actuating means, for selectively moving said bolt actuating means from said removed position to said bolt driving position to rotate any selected one of such bolts.
Dependencies are inferred from the claim text.