US3924436A - Method and apparatus for forming cup-shaped metal articles - Google Patents
Method and apparatus for forming cup-shaped metal articles Download PDFInfo
- Publication number
- US3924436A US3924436A US373297A US37329773A US3924436A US 3924436 A US3924436 A US 3924436A US 373297 A US373297 A US 373297A US 37329773 A US37329773 A US 37329773A US 3924436 A US3924436 A US 3924436A
- Authority
- US
- United States
- Prior art keywords
- punch
- die
- dies
- forming
- article
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/28—Deep-drawing of cylindrical articles using consecutive dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/30—Deep-drawing to finish articles formed by deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
Definitions
- the present invention relates to a method and apparatus for forming a cup-shaped metal article.
- cupshaped metal articles For the most part, in the past the manufacture of cupshaped metal articles have been accomplished by a drawing operation. However, relatively deep cupshaped metal articles cannot be manufactured by a single drawing operation. The maximum ratio of wall height to cup diameter is l to 1.3 in a single drawing operation. Accordingly, it has been necessary to attempt to perform multiple drawing operations on a single article. However, this has certain disadvantages. Specifically, desired brightness of the wall surface cannot be obtained. Further, the thickness of the wall of the redrawn article is the same as or greater than the thickness of the bottom of the article. This is undesirable since generally cup-shaped metal articles such as beverage cans do not require that the wall thickness be as great as the bottom thickness.
- the practice has developed to form the finished cup-shaped article from a drawn cup-shaped metal blank by means of dies and a punch.
- Such operations have generally involved the forming of the finished article by passing the blank through a plurality of, such as two or three, fixed dies.
- the dies are arranged so that the article is not simultaneously contacted by any two adjacent dies. If the cup is acted upon simultaneously by two fixed dies, the article is formed at a different rate at each die stage, such that a slackness occurs in the wall of the article between the dies, thereby resulting in a breakage of the wall. Since the maximum reduction ratio at one die stage is approximately 40 to 50 percent, it is necessary to separate the dies in a geometrical progression for a relatively deep finished article.
- Devices for carrying out such a forming ope ration generally include a movable forming punch, a plurality of fixed dies, a cup infeed mechanism, a cup outfeed mechanism, and a doming punch for forming the bottom of the article.
- the punch stroke is dependent upon the space between dies, the space for the cup infeed mechanism, and the space between the last die and the doming mechanism. The deeper the cup to be formed the longer the stroke of the punch and thus, the more difficult it is to form an article accurately at high speeds.
- FIG. 1 is a partial perspective view with portions broken away of a preferred embodiment of an apparatus in accordance with the present invention
- FIG. 2 is a partial cross-sectional view of the dies employed in the apparatus of FIG. 1;
- FIG. 3 is a cross-sectional view of the punch device employed in the apparatus of FIG. 1;
- FIG. 4 is a schematic view of a blank infeed mechanism employed in the apparatus of FIG. 1;
- FIG. 5 is a schematic illustration partially in crosssection of the apparatus for removing the finished article from the punch.
- FIG. 6 is a graphical illustration of the various locations of the elements of the apparatus of FIG. 1 during one cycle of operation.
- a frame 10 has an upper slideway surface 11 thereon.
- a block 20 containing dies 21 and a block 30 containing punch 31 are mounted on slideway 11 for movement toward and away from each other.
- a main drive shaft 12 is driven by suitable driving means [not shown].
- Shaft 12 has pinions 13 attached thereto which engage with suitably mounted gears 14.
- Gears 14 are connected to a crank 15 which is connected to connecting rods 16 and 17.
- Connecting rods 16 and 17 are pivotally connected adjacent the mid points of links 18 and 19 by pins26 and 36.
- the bottom ends of links 18 and 19 are pivotally mounted to frame 10 by pins 25 and 35.
- the upper ends of links 18 and 19 are pivotally attached to links 24 and 34 by pins 27 and 37.
- Links 24 and 34 are respectively pivotally attached to die block 20 and punch block 30.
- die block 20 and dies 21 are shown in more detail.
- Die block 20 has a frame 22 on which are mounted three dies 21a, 21b and 21c and a dome forming mechanism 23. The intervals between the dies are determined by the desired reduction ratio of the wall thickness of the finished article.
- FIG. 3 illustrates in more detail the form of punch 31. It will be noted that inwardly and coaxially of punch 31 is a knockout punch 32 which is movable outwardly of the end of punch 31. The article contacting end of punch 31 and knockout punch 32 is as desired to form 3 the shape of the bottom of the finished article and to operate in cooperation with doming mechanism 23.
- FIG. 4 schematically illustrates a mechanism for feeding blanks to the device.
- a magazine 71 contains a plurality of blanks.
- a finger 74 is attached to die block frame 22 and moves therewith. Movement of finger 74 rotates a lever 72 at a predetermined interval and angle to charge cup blanks into a cup holder 73 positioned in front of the dies.
- FIG. 5 schematically illustrates a device for operating knockout punch 32 to remove the finished article from punch 31 after the article is formed.
- a crank 55 rotates synchronously with main crank by means of a suitable interconnection such as chain 53 and gear 54.
- Crank 55 is connected through a link 46 with one end of a link 44.
- Link 44 pivots adjacent the middle thereof around a fulcrum pin 49.
- the other end of link 44 has a sliding connection engaged on a connecting pin 50 of knockout punch 32.
- link 44 causes relative rightward or leftward movement [as viewed in FIG. 5] of knockout punch32.
- means are provided for a timed regulatory positioning of the location of the fulcrum pin 49.
- fulcrum 49 is attached to a connecting rod 47 of a piston movable in a chamber 42 of a cylinder assembly 40.
- a second chamber 41 of cylinder assembly 40 has therein a piston the connecting rod 46 of which is attached to the frame of the device.
- die block and punch block 30 are at their most spaced apart positions.
- Drive shaft 12 is rotated to cause rotation of gears 14 and crank 15.
- crank 15 rotates
- die block 20 and punch block 30 due to the movement of connecting rods 16 and 17 and links 18 and 19, are caused to approach each other.
- an article blank 80 has been positioned in holder 73 adjacent dies 21.
- punch 31 with knockout punch 32 in the withdrawn position of FIG. 3 force blank 80 into the first die 2 1a and performs a first forming operation.
- FIG. 6 illustrates the angular position of the various elements of the invention with regard to one example of stroke dimension.
- the thick solid line represents the position of knockout punch 32.
- the dotted lines represent the positions of the doming device 23 and punch 31.
- knockout punch 32 without interference from punch 31, would be indicated by the thin solid line in FIG. 6.
- assembly 40 moves fulcrum 49 toward die block 20 during the punching operation and away from die block 20 during the withdrawal movement of die block 20 and punch block 30.
- said step of removing said formed metal article from said punch comprising moving a knockout punch which is coaxially positioned within said punch longitudinally outwardly of said punch toward said at least one die to a position beyond said forming position of said punch.
- said at least one die comprises a plurality of dies, and said punch forces said blank through each of said plurality of dies.
- An apparatus for forming cup-shaped metal articles from a metal blank comprising:
- a punch and at least one die mounted to move toward and away from each other on said slideway surface
- means for removing the thus formed cup-shaped metal article from said punch comprising a knockout punch coaxially and longitudinally movably positioned within said punch, and means for moving said knockout punch longitudinally outwardly of said punch toward said at least one die to a position beyond said forming position of said punch.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47062318A JPS5746928B2 (cs) | 1972-06-23 | 1972-06-23 | |
JP48045767A JPS49134484A (cs) | 1973-04-24 | 1973-04-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
USB373297I5 USB373297I5 (cs) | 1975-01-28 |
US3924436A true US3924436A (en) | 1975-12-09 |
Family
ID=26385830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US373297A Expired - Lifetime US3924436A (en) | 1972-06-23 | 1973-06-25 | Method and apparatus for forming cup-shaped metal articles |
Country Status (5)
Country | Link |
---|---|
US (1) | US3924436A (cs) |
DE (1) | DE2329456C3 (cs) |
FR (1) | FR2189141B1 (cs) |
GB (1) | GB1440618A (cs) |
NL (1) | NL168150C (cs) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4007620A (en) * | 1975-06-11 | 1977-02-15 | Crown Cork & Seal Company, Inc. | Metal container forming apparatus |
US4249410A (en) * | 1978-11-06 | 1981-02-10 | Standun, Inc. | Die press having selectively variable die access clearance |
CN112024754A (zh) * | 2020-08-19 | 2020-12-04 | 冯程阳 | 一种金属罐体冲压成型设备及冲压成型工艺 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2378583A1 (fr) * | 1977-01-26 | 1978-08-25 | American Can Co | Machine de production de corps de boites a fond ferme, equipe d'un mecanisme a poincon et extracteur |
US4506534A (en) * | 1983-01-03 | 1985-03-26 | Redicon Corporation | Method and apparatus for removing drawn container from draw horn |
RU2540327C2 (ru) * | 2008-11-25 | 2015-02-10 | Конинклейке Филипс Электроникс Н.В. | Рентгеновский анод |
CN108127052B (zh) * | 2018-01-11 | 2024-05-24 | 佛山市定中机械有限公司 | 一种高产出双动复合模冲杯机及其冲杯工艺 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US628043A (en) * | 1898-09-20 | 1899-07-04 | Norbert Sperber | Counter mechanism for metal-working machines. |
US1967245A (en) * | 1931-02-20 | 1934-07-24 | American Can Co | Art of drawing |
US2800813A (en) * | 1952-04-10 | 1957-07-30 | Kabelund Metallwerke Neumeyer | Method and apparatus for the plastic shaping of metals |
US2872887A (en) * | 1953-03-06 | 1959-02-10 | Praturlon Joseph | Rotary press comprising a plurality of tool groups |
US3270544A (en) * | 1963-06-26 | 1966-09-06 | Reynolds Metals Co | Can forming apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB669678A (en) * | 1949-11-18 | 1952-04-09 | Charles Joseph Rhodes | Improvements in or relating to the deep-drawing of sheet metal |
FR1117905A (fr) * | 1955-01-17 | 1956-05-29 | Presse horizontale à effets multiples | |
US3423985A (en) * | 1966-02-04 | 1969-01-28 | Stolle Corp | Stripper and pre-draw ring for wall-ironing can bodies |
DE1602369A1 (de) * | 1967-06-29 | 1970-08-06 | Reisholz Stahl & Roehrenwerk | Verfahren zum Herstellen nahtloser Rohre |
-
1973
- 1973-06-07 NL NLAANVRAGE7307928,A patent/NL168150C/xx not_active IP Right Cessation
- 1973-06-08 DE DE2329456A patent/DE2329456C3/de not_active Expired
- 1973-06-21 FR FR7322729A patent/FR2189141B1/fr not_active Expired
- 1973-06-22 GB GB2983673A patent/GB1440618A/en not_active Expired
- 1973-06-25 US US373297A patent/US3924436A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US628043A (en) * | 1898-09-20 | 1899-07-04 | Norbert Sperber | Counter mechanism for metal-working machines. |
US1967245A (en) * | 1931-02-20 | 1934-07-24 | American Can Co | Art of drawing |
US2800813A (en) * | 1952-04-10 | 1957-07-30 | Kabelund Metallwerke Neumeyer | Method and apparatus for the plastic shaping of metals |
US2872887A (en) * | 1953-03-06 | 1959-02-10 | Praturlon Joseph | Rotary press comprising a plurality of tool groups |
US3270544A (en) * | 1963-06-26 | 1966-09-06 | Reynolds Metals Co | Can forming apparatus |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4007620A (en) * | 1975-06-11 | 1977-02-15 | Crown Cork & Seal Company, Inc. | Metal container forming apparatus |
US4249410A (en) * | 1978-11-06 | 1981-02-10 | Standun, Inc. | Die press having selectively variable die access clearance |
CN112024754A (zh) * | 2020-08-19 | 2020-12-04 | 冯程阳 | 一种金属罐体冲压成型设备及冲压成型工艺 |
CN112024754B (zh) * | 2020-08-19 | 2021-05-07 | 揭阳市金丰制罐实业有限公司 | 一种金属罐体冲压成型设备及冲压成型工艺 |
Also Published As
Publication number | Publication date |
---|---|
DE2329456C3 (de) | 1979-11-29 |
NL168150B (nl) | 1981-10-16 |
GB1440618A (en) | 1976-06-23 |
USB373297I5 (cs) | 1975-01-28 |
DE2329456A1 (de) | 1974-01-10 |
NL168150C (nl) | 1982-03-16 |
DE2329456B2 (cs) | 1979-03-22 |
FR2189141B1 (cs) | 1978-12-29 |
FR2189141A1 (cs) | 1974-01-25 |
NL7307928A (cs) | 1973-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH04220126A (ja) | 一台のプレスにおいてシエルを成形、再成形および縁巻き込みする方法および装置 | |
US3800583A (en) | Cup transfer apparatus and system for drawing and ironing | |
US3924436A (en) | Method and apparatus for forming cup-shaped metal articles | |
US3704619A (en) | Redraw blankholder positioning mechanism for cup-shaped article formers such as metallic can body formers and the like | |
JPH084860B2 (ja) | 容器を形成する方法および装置 | |
US3446167A (en) | Rotary drawing,ironing and doming press for partially extruded can bodies | |
US4773250A (en) | Module-type forming machine | |
US3369387A (en) | Double strand feed press | |
US4007621A (en) | Containers | |
US3040684A (en) | Apparatus for drawing door knobs | |
US2761406A (en) | Die for drawing sheet material | |
US2739557A (en) | Method and apparatus for deep drawing of metals | |
US2341667A (en) | Means for drawing shells | |
JPH11156452A (ja) | 多段絞り加工方法及び多段絞りプレス機械 | |
JP3868765B2 (ja) | トランスファプレス機 | |
JP3848112B2 (ja) | トランスファプレス機の抜き絞り装置 | |
US4272978A (en) | Progressive stage forging machine | |
US1935854A (en) | Punch press for forming sheet metal shells | |
US2851979A (en) | Transfer device | |
US3350908A (en) | Tube beading machine | |
US3452578A (en) | Process and apparatus for manufacturing unilaterally closed cases with a bottom fold | |
US2347272A (en) | Sheet metal working press | |
US3452693A (en) | Machine for very rapidly pressing ball pen points and other articles starting from a metallic strip or wire | |
US4397170A (en) | Double feed eyelet machine with roll forming capability | |
US1548457A (en) | Shell-drawing machine |