US 7,000,445 B2Granted

System for forming an elongated container

AssigneeStolle Machinery Company, LLC

InventorsMark E. Hepner, Barry Lippert

Life of this patent

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Abstract

A system for forming a cup used in forming an elongated container including a draw-redraw station including a movable platen carrying a punch shell; a punch core riser, a punch core mounted on the punch core riser; and a first, fluidly actuated pressure sleeve; and a fixed base carrying a pressure pad; a die core ring; and a die core; the punch shell being movable toward the die core ring to wipe the blank over the die core ring to form an inverted cup; the punch core being movable toward the die core to reverse draw the inverted cup and form the cup; and the die core ring engaging the material against the punch core during the reverse draw to control metal thickness; and a cooling assembly including a chiller, a coolant passage formed in the punch core and fluidly connected to the chiller.

Claims16

Dependent claims

An apparatus for forming a cup used in forming an elongated container comprising:

(A) a draw-redraw station comprising
(1) one or more slides carrying
(a) a punch shell;
(b) an axially movable pressure sleeve located radially inward of said punch shell;
(c) a punch core riser, a punch core mounted on said punch core riser with said punch core located radially inward of said pressure sleeve;
and
(2) a fixed base carrying
(a) a cut edge;
(b) a pressure pad located radially inward of said cut edge;
(c) a die core ring located radially inward of said pressure pad;
and
(d) a die core which is a bore located radially inward of said die core ring;
(3) said punch shell being movable toward said base to blank material inserted into said apparatus against said cut edge and being movable toward said die core ring to wipe the blank over said die core ring to form an inverted cup;
(4) said punch core being movable toward said die core to reverse draw the inverted cup and form the cup in said bore of said die core;
(5) said die core ring engaging the material against said punch core during the reverse draw to control metal thickness, wherein said cup is ejected through a bore in a bottom of said base;
(6) a coolant passage formed in said punch core riser;
and
(7) a chiller fluidly connected to said coolant passage, said chiller being adapted to deliver a coolant to said coolant passage, wherein said chiller is adapted to maintain said coolant at a selected temperature.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/737,587Filed 15 Dec 2003
Published: US 2005/0126247 A116 Jun 2005
Granted: 21 Feb 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B21D 51/24
Characterised by the use of the objects: high-pressure containers, e.g. boilers, bottles
B21D 22/24
Deep-drawing: involving two drawing operations having effects in opposite directions with respect to the blank
B21D 37/16
Tools as parts of machines covered by this subclass: heating or cooling
Y10S 72/715
Metal deforming: method of making can bodies