# US 2019/0168278 A1 · Actuator with variable speed servo motor for redraw assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168278 A1 - Document ID: US20190168278A1 - Status: Published application - Kind: A1 - Application number: 16/273,270 - Filed: 2019-02-12 - Published: 2019-06-06 - Earliest claimed: 2013-09-11 - Assignees: Stolle Machinery Company, LLC - Applicants: Stolle Machinery Company, LLC - Inventors: DONALD RAY HAULSEE - Web page: https://patentgrep.com/patent/US20190168278A1 ## CPC - B21D 22/28: of cylindrical articles using consecutive dies - B21D 24/08: Pneumatically or hydraulically loaded blank holders - B21D 24/14: pneumatically or hydraulically - B21D 51/26: cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K) - B30B 1/06: operated by cams, eccentrics, or cranks - B30B 1/268: {using a toggle connection between driveshaft and press ram} - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)} ## Abstract An actuator assembly for a redraw sleeve that operates independently of the ram drive mechanism is provided. The actuator assembly utilizes a servomotor. The servomotor is structured to provide its output shaft with a variable rotation speed so as to accommodate the need for the redraw sleeve to be in selected locations at specific times. ## Claims ### Claim 1 An actuator assembly for a redraw assembly, said actuator assembly comprising: a servomotor including a rotating output shaft; and wherein said servomotor produces a selectable rotational speed in said servomotor output shaft. ### Claim 2 (depends on 1) The actuator assembly of claim 1 wherein: said servomotor has a maximum rotational speed of between about 700 rpm and 500 rpm; and said servomotor has a minimum rotational speed of between about 250 rpm and 50 rpm. ### Claim 3 (depends on 2) The actuator assembly of claim 2 wherein: said servomotor has a maximum rotational speed of about 540 rpm; and said servomotor has a minimum rotational speed of about 125 rpm. ### Claim 4 (depends on 1) The actuator assembly of claim 1 further comprising: an eccentric journal assembly, said eccentric journal assembly coupled to said servomotor output shaft; wherein rotation of said servomotor output shaft causes said eccentric journal assembly to rotate between at least a first, rearward position and a second, forward position; wherein said eccentric journal assembly also rotates through an acceleration position and a deceleration position; said acceleration position occurring just prior to said eccentric journal assembly's second, forward position; and said deceleration position occurring just prior to said eccentric journal assembly's first, rearward position. ### Claim 5 (depends on 4) The actuator assembly of claim 4 wherein: said servomotor has a faster rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; and said servomotor has a slower rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position. ### Claim 6 (depends on 4) The actuator assembly of claim 4 wherein: said eccentric journal assembly includes a shaft and an eccentric journal; said eccentric journal assembly shaft having an axis of rotation; said eccentric journal being substantially circular; and wherein eccentric journal is coupled to said eccentric journal assembly shaft with the center of said eccentric journal spaced from said eccentric journal assembly shaft axis of rotation. ### Claim 7 (depends on 6) The actuator assembly of claim 6 further comprising: a connecting rod assembly including a connecting rod, said connecting rod coupled to said eccentric journal assembly; wherein said connecting rod moves between a first, rearward position and a second, forward position, respectively, corresponding to said eccentric journal assembly first position and said eccentric journal assembly second position; wherein said connecting rod is structured to be coupled to a movable redraw sleeve; and a movable redraw sleeve coupled to said connecting rod. ### Claim 8 (depends on 7) The actuator assembly of claim 7 wherein: said servomotor has a faster rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; said servomotor has a slower rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; wherein, said connecting rod moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; wherein, said connecting rod moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; wherein, said movable redraw sleeve moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; and wherein, said movable redraw sleeve moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position. ### Claim 9 (depends on 6) The actuator assembly of claim 6 wherein said redraw sleeve is a collapsing redraw sleeve structured to change between a first elongated configuration and a second collapsed configuration. ### Claim 10 (depends on 9) The actuator assembly of claim 9 wherein: said collapsing redraw sleeve includes a stationary slide housing and a collapsing redraw cylinder; said collapsing redraw cylinder slidably disposed in the stationary slide housing; and wherein said collapsing redraw cylinder is structured to move between a first, retracted position and a second, extended position. ### Claim 11 A redraw assembly comprising: a movable redraw sleeve; a redraw die; said movable redraw sleeve structured to move between a first position, wherein said movable redraw sleeve is spaced from said redraw die, and a second position, wherein said movable redraw sleeve is disposed immediately adjacent said redraw die; an actuator assembly for a redraw assembly including a servomotor; said servomotor including a rotating output shaft; said servomotor coupled to said redraw sleeve; and wherein said servomotor produces a selectable rotational speed in said servomotor output shaft. ### Claim 12 (depends on 11) The redraw assembly of claim 11 wherein: said servomotor has a maximum rotational speed of between about 700 rpm and 500 rpm; and said servomotor has a minimum rotational speed of between about 250 rpm and 50 rpm. ### Claim 13 (depends on 14) The redraw assembly of claim 14 wherein: said servomotor has a maximum rotational speed of about 540 rpm; and said servomotor has a minimum rotational speed of about 125 rpm. ### Claim 14 (depends on 11) The redraw assembly of claim 11 further comprising: an eccentric journal assembly, said eccentric journal assembly coupled to said servomotor output shaft; wherein rotation of said servomotor output shaft causes said eccentric journal assembly to rotate between at least a first, rearward position and a second, forward position; wherein said eccentric journal assembly also rotates through an acceleration position and a deceleration position; said acceleration position occurring just prior to said eccentric journal assembly's second, forward position; and said deceleration position occurring just prior to said eccentric journal assembly's first, rearward position. ### Claim 15 (depends on 14) The redraw assembly of claim 14 wherein: said servomotor has a faster rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; and said servomotor has a slower rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position. ### Claim 16 (depends on 14) The redraw assembly of claim 14 wherein: said eccentric journal assembly includes a shaft and an eccentric journal; said eccentric journal assembly shaft having an axis of rotation; said eccentric journal being substantially circular; and wherein eccentric journal is coupled to said eccentric journal assembly shaft with the center of said eccentric journal spaced from said eccentric journal assembly shaft axis of rotation. ### Claim 17 (depends on 16) The redraw assembly of claim 16 further comprising: a connecting rod assembly including a connecting rod, said connecting rod coupled to said eccentric journal assembly; wherein said connecting rod moves between a first, rearward position and a second, forward position, respectively, corresponding to said eccentric journal assembly first position and said eccentric journal assembly second position; wherein said connecting rod is structured to be coupled to a movable redraw sleeve; and said movable redraw sleeve coupled to said connecting rod. ### Claim 18 (depends on 17) The redraw assembly of claim 17 wherein: said servomotor has a faster rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; said servomotor has a slower rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; wherein, said connecting rod moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; wherein, said connecting rod moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; wherein, said movable redraw sleeve moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position; and wherein, said movable redraw sleeve moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position. ### Claim 19 (depends on 16) The redraw assembly of claim 16 wherein said redraw sleeve is a collapsing redraw sleeve structured to change between a first elongated configuration and a second collapsed configuration. ### Claim 20 (depends on 11) The redraw assembly of claim 11 wherein: said collapsing redraw sleeve includes a stationary slide housing and a collapsing redraw cylinder; said collapsing redraw cylinder slidably disposed in the stationary slide housing; wherein said collapsing redraw cylinder is structured to move between a first, retracted position and a second, extended position.