公开(公告)号：US3868919A

公开(公告)日：1975-03-04

申请号：US42229273

申请日：1973-12-06

Applicant: ALUMINUM CO OF AMERICA

Inventor： SCHRECKER HOWARD D ,  DIEKHOFF HANS H

IPC: B21D51/38 ,  B21D51/44 ,  B29C51/08 ,  B21D51/26

CPC classification number: B21D51/383 ,  B65D17/4011

Abstract: A method and apparatus are provided for forming a sheet metal easy opening container wall in which an annular groove is formed around the periphery of a depressed central portion of a blank, a planar lip and an upstanding chuckwall are formed around the outer edge of the groove in the blank, the groove is reformed by moving portions of it radially outwardly to form a Z-wall connecting the center portion of the blank to the lip, a score line is formed in the lip to define a removable panel and the Zwall is collapsed to form an annular folded band adjacent the score line. The annular folded band is designed to shield the raw score edge on the central panel portion after separation of the panel from the can end.

Abstract translation: 提供了一种用于形成金属板容易开口容器壁的方法和装置，其中围绕坯料的凹陷中心部分的周边形成环形槽，平面唇缘和直立夹板围绕凹槽的外边缘形成 在坯料中，通过将其径向向外移动部分来重新形成槽，以形成将坯料的中心部分连接到唇缘的Z形壁，在唇缘中形成刻痕线以限定可移除的面板，并且Z形壁 被折叠以形成邻近刻痕线的环形折叠带。 环形折叠带被设计成在将面板从罐端部分离之后屏蔽中心板部分上的原始刻痕边缘。

公开(公告)号：US3868918A

公开(公告)日：1975-03-04

申请号：US34815573

申请日：1973-04-05

Applicant: ALUMINUM CO OF AMERICA

Inventor： SMITH JR GEORGE L ,  DIEKHOFF HANS H

IPC: B21D51/38 ,  B21D51/26

CPC classification number: B21D51/383 ,  B65D17/4012

Abstract: An easy opening device is provided which includes a score line in the container wall defining an opening flap adjacent an edge of the container wall and a tab having a nose end overlying the opening flap and affixed thereto and a handle end toward the opposite edge of the container wall with a line of weakening in the tab between its nose and handle ends for depressing the handle end of the tab to a nonobstructing position on the container wall, and which further includes an upwardly embossed hook in the container wall for engagement over an edge portion of the handle end of the tab to restrain it in a non-obstructing position on the container wall. A method of forming an embossed hook for engaging a tab is also provided.

Abstract translation: 提供了一种容易打开装置，其包括在容器壁中的刻痕线，其限定了邻近容器壁的边缘的开口翼片和突出部，该突出部具有覆盖开口翼片并固定到其上的鼻端部和朝向相对边缘的手柄端部 容器壁在其鼻部和手柄端之间的突舌中具有弱化线，用于将突片的手柄端压入容器壁上的无障碍位置，并且还包括在容器壁中的向上压花的钩，用于接合在边缘 突出部的把手端部的一部分将其限制在容器壁上的非阻碍位置。 还提供了形成用于接合突片的压花钩的方法。

公开(公告)号：US3659740A

公开(公告)日：1972-05-02

申请号：US3659740D

申请日：1970-03-18

Applicant: ALUMINUM CO OF AMERICA

Inventor： DIEKHOFF HANS H ,  SCHRECKER HOWARD D

IPC: B21D51/38

CPC classification number: B21D51/383 ,  B65D17/28

Abstract: Apparatus for fabricating a tab element having an opening for joinder to a container wall including a female die having an elongated recess and an outwardly disposed annular tab engaging surface. A male die having an upwardly directed boss and a surrounding annular tab supporting surface. The male die having a concave transverse wall connecting the die boss with the annular tab supporting surface. Aligning the tab opening with the die elements and establishing relative closing movement between the dies produces compressive reforming of the opening defining portion of the tab element to provide a convexly curved portion corresponding in curvature to the male die concave transverse wall. A method of reforming an opening defining wall in a tab element to provide a continuous wall which diverges from the upper tab surface to the lower tab surface by compressively reforming the continuous wall. A container wall having a removable sector with a tab element secured thereto by means of an integral rivet including a wall panel having a hollow integral rivet provided with a transverse end wall and a peripheral wall. A tab element having an attachment opening defined by a continuous wall and the rivet extending through the tab element with the continuous opening defining wall in contact with the peripheral rivet wall. The opening defining wall having a lower inwardly convexly curved portion in surface to surface contact with a portion of the peripheral rivet wall having an outwardly concave configuration.

Abstract translation: 用于制造具有用于连接到容器壁的开口的突片元件的装置，包括具有细长凹槽和向外设置的环形突片接合表面的阴模。 具有向上指向的凸起和周围的环形凸片支撑表面的阳模具。 阳模具有将模具凸台与环形凸片支撑表面连接的凹形横向壁。 将突片开口与模具元件对准并且在模具之间建立相对的关闭运动，产生拉片元件的开口限定部分的压缩重整，以提供对应于凸模凹入横向壁的曲率的凸形弯曲部分。