公开(公告)号：US3688718A

公开(公告)日：1972-09-05

申请号：US3688718D

申请日：1969-10-23

Applicant: ALUMINUM CO OF AMERICA

Inventor： SCHRECKER HOWARD D

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

CPC classification number: B21D51/383 ,  B65D17/4012 ,  B65D17/404

Abstract: A method and apparatus for scoring a metal container end to provide a tear-out panel, wherein the scoring is accomplished with a greatly reduced tendency for any internal protective coating on said end to be damaged and for the residual metal in the score line to fracture. During the scoring operation the container end is supported on an anvil die having an arcuately domed rib thereon which, in cooperation with the advance of the scoring indenter, works the metal in the lower portion of the metal sheet and distributes the working stresses normally produced in the metal during the scoring operation.

Abstract translation: 一种用于对金属容器端进行刻痕以提供撕出板的方法和装置，其中所述刻痕以大大降低的趋势实现，所述端部上的任何内部保护涂层被损坏，并且刻痕线中的残余金属断裂 。 在刻痕操作期间，容器端部被支撑在其上具有弓形肋状肋的砧座上，与砧座压头的前进协同工作，金属板的下部的金属分布在 金属在打分操作。

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：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。