公开(公告)号：US3930770A

公开(公告)日：1976-01-06

申请号：US552311

申请日：1975-02-24

申请人： David Alvin Gaudet ,  John Moss Wathen, Jr.

发明人： David Alvin Gaudet ,  John Moss Wathen, Jr.

IPC分类号： B29C45/14 ,  B29F1/10

CPC分类号： B29C45/14598 ,  B29C2045/14606 ,  B29L2001/00 ,  B29L2023/20

摘要： An expandable poincon assembly to be used for forming a headpiece onto a preformed thin-walled plastic or laminate tube or bag provides a poincon upon which the loose fitting preformed thin-walled tube can be loaded. After tube loading, the poincon is inserted into a female forming member. Toward the end of the poincon's insertion stroke, a soupape which is mounted for axially movement within the head end of the poincon contacts the female forming member and then partially retracts into the head end of the poincon as the poincon continues to advance to the end of its insertion stroke. A conically-shaped washer mounted on the bottom end of the soupape is peripherally expanded by the continued advancement of the poincon after the top end of the soupape has contacted the female forming member. As the poincon reaches the end of its forward stroke, which will be the closed position of the poincon relative to the female forming member, the expanding periphery of the washer makes contact with the preformed tube body at a location below the portion of the tube body which extends beyond the poincon to effect a tight sealing fit between the poincon, the tube body and the female forming member to define a mold cavity in which the headpiece to the tube body may be formed.

公开(公告)号：US3988413A

公开(公告)日：1976-10-26

申请号：US607373

申请日：1975-08-25

申请人： David Alvin Gaudet ,  John Moss Wathen, Jr.

发明人： David Alvin Gaudet ,  John Moss Wathen, Jr.

IPC分类号： B29C45/14 ,  B29D23/20 ,  B29D23/02 ,  B29F1/00

CPC分类号： B29D23/20 ,  B29C45/14598 ,  B29C2045/14606 ,  B29L2001/00 ,  B29L2023/20 ,  Y10S264/41

摘要： Method in which an expandable internal shoulder forming member assembly to be used for forming a headpiece onto a preformed thin-walled plastic or laminate tube or bag provides a internal shoulder forming member upon which the loose fitting preformed thin-walled tube can be loaded. After tube loading, the internal shoulder forming member is inserted into a female forming member. Toward the end of the internal shoulder forming member's insertion stroke, a internal neck forming member which is mounted for axially movement within the head end of the internal shoulder forming member contacts the female forming member and then partially retracts into the head end of the internal shoulder forming member as the internal shoulder forming member continues to advance to the end of its insertion stroke. A conically-shaped washer mounted on the bottom end of the internal neck forming member is peripherally expanded by the continued advancement of the internal shoulder forming member after the top end of the internal neck forming member has contacted the female forming member. As the internal shoulder forming member reaches the end of its forward stroke, which will be the closed position of the internal shoulder forming member relative to the female forming member, the expanding periphery of the washer makes contact with the preformed tube body at a location below the portion of the tube body which extends beyond the internal shoulder forming member to effect a tight sealing fit between the internal shoulder forming member, the tube body and the female forming member to define a mold cavity in which the headpiece to the tube body may be formed.

摘要翻译： 将用于在预成型的薄壁塑料或层压管或袋上形成头盔的可膨胀内肩形成构件组件的方法提供内肩台形成构件，可以在其上装载松配合预制的薄壁管。 在管装载之后，内肩形成构件插入阴形成构件中。 在内肩形成构件的插入行程的端部，内肩部形成构件安装成在内肩形成构件的头端内轴向移动，接触阴形成构件，然后部分地缩回到内肩部的头端 作为内部肩部形成构件的成形构件继续前进到其插入行程的结束。 内颈部形成构件的顶端与内部成形构件接触后，通过内肩形成构件的继续前进，安装在内颈部形成构件的底端上的圆锥形垫圈被周边地膨胀。 当内肩形成构件到达其向前行程的末端时，其将是内肩形成构件相对于阴形成构件的关闭位置，垫圈的膨胀周边在下面的位置处与预成形管体接触 所述管体的延伸超过所述内部肩部形成构件的部分以在所述内部肩部形成构件，所述管体和所述阴形成构件之间进行紧密的密封配合，以限定模腔，所述模具腔体中的所述头部可以是管体 形成。