公开(公告)号：EP4159406A1

公开(公告)日：2023-04-05

申请号：EP22206171.5

申请日：2020-10-08

申请人： Davis-Standard, LLC

发明人： Christiano, John P. ,  Allen, Biron Chad ,  MacGregor, Alexandre ,  Wnuk, Joseph A. ,  Rosivach, Christopher ,  Saulius T., Eiva ,  McKenna, Tyler Robert

IPC分类号： B29C48/325 ,  B29C48/09 ,  B29C49/04 ,  B29C48/92 ,  B29C48/25 ,  B29C48/255

摘要： A tube forming apparatus (10) for multi-dimensional controlled forming of polymeric tube includes a housing (12) that extends around a longitudinal axis (L) and between a rear end (12A) and a discharge end (12B) thereof. The housing (12) has an inside surface (12F) that extends between the rear end (12A) and the discharge end (12B). The inside surface (12F) forms an interior area (12C) inside the housing (12). The tube forming apparatus includes a core tube assembly (14) that includes an exterior core tube (14A) and an inner core tube (14B) positioned partially therein. The tube forming apparatus includes a die (18) that has an inner die-surface (18F). A diverter tip (16) is mounted in and extends from the first inner tube end (14G) into the die (18) such that a die opening (G1) is formed between the inner die-surface (18F) and the exterior tip-surface (16F). The tube forming apparatus includes a core tube adjustment system (30) mounted proximate the rear end (12A) of the housing. The core tube adjustment (30) system includes one or both of an axial displacement device (40) configured to axially position the core tube assembly (14) for modulating wall thickness of the tube (20) and an angular displacement device (50) configured to modulate the inner core tube (14B), relative to the longitudinal axis (L), for modulating concentricity of the tube (20).

公开(公告)号：EP4159405A1

公开(公告)日：2023-04-05

申请号：EP22206160.8

申请日：2020-10-08

申请人： Davis-Standard, LLC

发明人： Christiano, John P. ,  Allen, Biron Chad ,  MacGregor, Alexandre ,  Wnuk, Joseph A. ,  Rosivach, Christopher ,  Saulius T., Eiva ,  McKenna, Tyler Robert

IPC分类号： B29C48/325 ,  B29C48/09 ,  B29C49/04 ,  B29C48/92 ,  B29C48/25 ,  B29C48/255

摘要： A tube forming apparatus (10) for multi-dimensional controlled forming of polymeric tube includes a housing (12) that extends around a longitudinal axis (L) and between a rear end (12A) and a discharge end (12B) thereof. The housing (12) has an inside surface (12F) that extends between the rear end (12A) and the discharge end (12B). The inside surface (12F) forms an interior area (12C) inside the housing (12). The tube forming apparatus includes a core tube assembly (14) that includes an exterior core tube (14A) and an inner core tube (14B) positioned partially therein. The tube forming apparatus includes a die (18) that has an inner die-surface (18F). A diverter tip (16) is mounted in and extends from the first inner tube end (14G) into the die (18) such that a die opening (G1) is formed between the inner die-surface (18F) and the exterior tip-surface (16F). The tube forming apparatus includes a core tube adjustment system (30) mounted proximate the rear end (12A) of the housing. The core tube adjustment (30) system includes one or both of an axial displacement device (40) configured to axially position the core tube assembly (14) for modulating wall thickness of the tube (20) and an angular displacement device (50) configured to modulate the inner core tube (14B), relative to the longitudinal axis (L), for modulating concentricity of the tube (20).

公开(公告)号：EP3804954A1

公开(公告)日：2021-04-14

申请号：EP20200703.5

申请日：2020-10-08

申请人： Davis-Standard, LLC

发明人： Christiano, John P. ,  Allen Biron, Chad ,  MacGregor, Alexandre ,  Wnuk, Joseph A. ,  Rosivach, Christopher ,  Saulius T., Eiva ,  McKenna, Tyler Robert

IPC分类号： B29C48/325 ,  B29C48/09 ,  B29C49/04 ,  B29C48/92 ,  B29C48/25 ,  B29C48/255

摘要： A tube forming apparatus (10) for multi-dimensional controlled forming of polymeric tube includes a housing (12) that extends around a longitudinal axis (L) and between a rear end (12A) and a discharge end (12B) thereof. The housing (12) has an inside surface (12F) that extends between the rear end (12A) and the discharge end (12B). The inside surface (12F) forms an interior area (12C) inside the housing (12). The tube forming apparatus includes a core tube assembly (14) that includes an exterior core tube (14A) and an inner core tube (14B) positioned partially therein. The tube forming apparatus includes a die (18) that has an inner die-surface (18F). A diverter tip (16) is mounted in and extends from the first inner tube end (14G) into the die (18) such that a die opening (Gl) is formed between the inner die-surface (18F) and the exterior tip-surface (16F). The tube forming apparatus includes a core tube adjustment system (30) mounted proximate the rear end (12A) of the housing. The core tube adjustment (30) system includes one or both of an axial displacement device (40) configured to axially position the core tube assembly (14) for modulating wall thickness of the tube (20) and
an angular displacement device (50) configured to modulate the inner core tube (14B), relative to the longitudinal axis (L), for modulating concentricity of the tube (20).

公开(公告)号：EP3789172A1

公开(公告)日：2021-03-10

申请号：EP20204529.0

申请日：2017-04-05

申请人： Davis-Standard, LLC

发明人： Christiano, John P.

IPC分类号： B29B7/42 ,  B29C48/535 ,  B29C48/56 ,  B29C48/60 ,  B29C48/605 ,  B29C48/615 ,  B29C48/03 ,  B29C48/395 ,  B29C48/64 ,  B29C48/65 ,  B29C48/67

摘要： A screw (10) for a plasticating apparatus, the screw having a core and at least one helical flight (13) extending along its length, the helical flight having a radially outermost flight surface, the helical flight extending in a first threaded direction and defining a first helical path having a first helix angle less than ninety degrees; the helical flight defining a helical channel; and a longitudinal portion of the screw having a plurality of advancing grooves (30) each having at least one closed-end, the plurality of advancing grooves being arranged in a non-continuous helix cut in the helical channel and forming a forward helical pathway, the advancing grooves (30) being parallel to and having the same first helix angle (H1) as the helical flight; the longitudinal portion further having at least one undercut surface located radially inwardly from the radially outermost flight surface (14) and wherein the at least one undercut surface has a depth that varies at least one of in a longitudinal direction (Q1) parallel to the plurality of advancing grooves (30), and in a direction traverse to the longitudinal direction (Q1).

公开(公告)号：EP3789171A1

公开(公告)日：2021-03-10

申请号：EP20204525.8

申请日：2017-04-05

申请人： Davis-Standard, LLC

发明人： Christiano, John P.

IPC分类号： B29B7/42 ,  B29C48/535 ,  B29C48/56 ,  B29C48/60 ,  B29C48/605 ,  B29C48/615 ,  B29C48/03 ,  B29C48/395 ,  B29C48/64 ,  B29C48/655 ,  B29C48/67

摘要： A screw (10) for a plasticating apparatus, the screw having a core (12) and at least one helical flight (13) extending along a length of the screw, the helical flight extending in a first threaded direction and defining a first helical path having a first helix angle (H1) less than ninety degrees; the helical flight defining a helical channel (18); and a longitudinal portion of the screw having a plurality of advancing grooves (30) each having at least one closed-end, the plurality of advancing grooves being arranged in a non-continuous helix cut in the screw core in the helical channel of the screw, the plurality of advancing grooves forming a forward helical pathway in the helical channel for conveying material through it along the at least one helical flight, the advancing grooves being parallel to and having the same first helix angle as the helical flight; the longitudinal portion further having a plurality of non-continuous cross-cut grooves (37C, 37N) traversing several of the plurality of advancing grooves.

公开(公告)号：EP3228435A3

公开(公告)日：2017-10-25

申请号：EP17165071.6

申请日：2017-04-05

申请人： Davis-Standard, LLC

发明人： Christiano, John P.

IPC分类号： B29C47/60 ,  B29C47/62 ,  B29B7/42

CPC分类号： B29B7/429 ,  B29C47/0009 ,  B29C47/385 ,  B29C47/60 ,  B29C47/6043 ,  B29C47/62 ,  B29C47/64 ,  B29C47/822

摘要： A screw for a plasticating apparatus has one or more helical flights. A portion of the screw has a plurality of advancing grooves arranged in a noncontinuous helix cut in the screw. The advancing grooves are dimensioned to receive material therein as the material is conveyed through the barrel. The screw has a plurality of noncontinuous cross-cut grooves traversing one or more of the advancing grooves. The cross-cut grooves have a second helix angle greater than the first helix angle and less than ninety degrees; and/or one or more of the cross-cut grooves have a third helix angle of about ninety degrees.

公开(公告)号：EP3228435A2

公开(公告)日：2017-10-11

申请号：EP17165071.6

申请日：2017-04-05

申请人： Davis-Standard, LLC

发明人： Christiano, John P.

IPC分类号： B29C47/60

摘要： A screw for a plasticating apparatus has one or more helical flights. A portion of the screw has a plurality of advancing grooves arranged in a noncontinuous helix cut in the screw. The advancing grooves are dimensioned to receive material therein as the material is conveyed through the barrel. The screw has a plurality of noncontinuous cross-cut grooves traversing one or more of the advancing grooves. The cross-cut grooves have a second helix angle greater than the first helix angle and less than ninety degrees; and/or one or more of the cross-cut grooves have a third helix angle of about ninety degrees.

摘要翻译： 用于塑化设备的螺钉具有一个或多个螺旋形飞行。 螺杆的一部分具有多个在螺杆中切割成非连续螺旋线的前进槽。 前进凹槽的尺寸设定为在材料通过桶传送时在其中接收材料。 该螺钉具有多个穿过一个或多个前进凹槽的不连续的横切凹槽。 横切凹槽具有大于第一螺旋角且小于九十度的第二螺旋角; 和/或一个或多个横切凹槽具有大约九十度的第三螺旋角。