EP0507380B1 - Device for forming a constriction on the open end zone of a metal can - Google Patents
Device for forming a constriction on the open end zone of a metal can Download PDFInfo
- Publication number
- EP0507380B1 EP0507380B1 EP92200838A EP92200838A EP0507380B1 EP 0507380 B1 EP0507380 B1 EP 0507380B1 EP 92200838 A EP92200838 A EP 92200838A EP 92200838 A EP92200838 A EP 92200838A EP 0507380 B1 EP0507380 B1 EP 0507380B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support member
- roller
- freely
- constriction
- end zone
- 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
- B21D51/2615—Edge treatment of cans or tins
- B21D51/2638—Necking
-
- 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
- B21D51/2615—Edge treatment of cans or tins
Definitions
- the invention relates to a device for forming a constriction on the open end zone of a metal can with a cylindrical body, having a longitudinal axis comprising:
- Such a device is known from e.g. US-A-4 450 700.
- the operation is terminated at the moment when the constriction has reached the desired length.
- the shape is determined by the form of the anvil and the freely-rotating roller.
- the freely-rotating roller according to this prior art reference has a rotational axis with the same direction as the axis of the metal can.
- the device mentioned in the preamble has the feature that the rotational axis of the freely-rotating roller forms a small angle with the direction of the central axis, such that the material of the open end zone of a metal can supported by the first support member in a device being operative seeks a path between the anvil and the roller.
- a particular embodiment has the feature that the angle has a value in the order of magnitude of 0,5°.
- the bearing construction for the freely-rotating roller revolves with respect to the fixedly disposed can. This permits a very simple construction. It will be apparent that the complementary arrangement is also possible. What is important here is the relative movement of the roller relative to the can.
- the roller and the anvil must be very hard.
- use can for instance be made of hard-metal or another material with a very high wear resistance and hardness.
- a certain flexibility in the construction can be useful in order to properly position the co-acting surfaces relative to one another under all conditions. Excessive rigidity in the construction can result in extremely great forces which could have an adverse effect on the useful life of the device.
- Figures 1 and 2 show a device 1 for forming a constriction 2 on the open end zone of a metal can 3 with a cylindrical body, which device comprises: a support member 4 for supporting the bottom 5 of the can 3 and for pushing displacement thereof in axial direction 6 by means of a pushing member 7 which is controlled in suitable manner by a control unit (not shown); an annular anvil 8 placed coaxially of this support member 4, on the inner side of which facing the support member 4 an internal modelling surface 9 is present which in the direction away from the support member 4 has a form adapted to the desired shape of the constriction 2; and a freely-rotating roller 10 likewise having a form adapted to that of the desired constriction 2 and therefore to the shape of the modelling surface 9, which roller 10 can press the end zone of the positioned can 3 forcefully against the modelling surface 9, which roller 10 is carried by a support member 11 which forms part of a rotor 12 with an externally placed pinion 13 that co-acts with a drive gear wheel 14 which is connected to a drive motor (
- the support member 4 is guided slidably in axial direction in a cylinder block 16 which forms part of a frame 17 in which the anvil ring is clamped and to which the rotor 12 is rotatably connected by means of a bearing unit 18.
- the support member 11 is pivotally connected via a pivot shaft 19 to the rotor 12.
- the views according to figures 1 and 2 should be understood such that in the situation shown therein the freely-rotating roller 10 engages forcibly in a direction containing at least a considerable radial component.
- the rotational sense of rotor 12 is indicated by 20.
- the axis of rotation 15 of the freely-rotating roller 10 lies substantially in a tangential plane and forms an angle of roughly 0.5° with the said axial direction 6.
- Figures 1 and 2 show this angle in a somewhat exaggerated manner for the sake of clarity.
- the rotor 12 is supported on the one side by a pressure spring 21 and is placed in a sloping position counter to the action of the pressure spring by means of an adjusting screw 22 protruding outside the rotor 12.
- the freely-rotating roller 10 is supported rotatably by the support member 11 by means of a roller bearing 24.
- Figure 3 shows the co-acting shapes of the modelling surface 9 of the anvil 8 and the roller 10.
- a can 3 is introduced into the transition zone between the anvil 8 and roller 10. Due to the rolling movement of roller 10 over the annular inner surface of the anvil 8 the can is pulled inward with its open end zone 23, whereby the constriction 2 is formed, as is shown in figure 4.
Abstract
Description
- The invention relates to a device for forming a constriction on the open end zone of a metal can with a cylindrical body, having a longitudinal axis comprising:
- (1) a first support member for supporting the bottom of a can and for pushing said can along a central axis of the device, said central axis coinciding with said longitudinal axis;
- (2) an annular anvil placed coaxially of said first support member, on the inner side of which an internal shaping surface is present having a shape adapted to the desired shape of the constriction; and
- (3) a freely-rotating roller having a shape adapted to the shape of the shaping surface, which roller can press the end zone of a can, being pushed by said first support member, forcefully against the shaping surface, which roller is carried by a second support member driven by drive means in a circular path concentric to said annular shaping surface, wherein the axis of rotation of the freely-rotating roller lies in a plane which is tangential to a cylinder having the central axis as longitudinal axis.
- Such a device is known from e.g. US-A-4 450 700.
- During use of this prior art device a rolling operation takes place wherein the can for processing is positioned relative to the annular anvil such that the end rim of the can comes to lie against the anvil. The end rim of the can is subsequently pressed forcibly against the anvil by a fully peripheral rolling operation by means of the freely-rotating roller. The shapes of the anvil and the freely-rotating roller are mutually adapted and correspond with the shape of the constriction to be obtained.
- A gradual shifting of the can in axial direction takes place during the operation.
- The operation is terminated at the moment when the constriction has reached the desired length. The shape is determined by the form of the anvil and the freely-rotating roller.
- The freely-rotating roller according to this prior art reference has a rotational axis with the same direction as the axis of the metal can.
- According to the invention, however, the device mentioned in the preamble has the feature that the rotational axis of the freely-rotating roller forms a small angle with the direction of the central axis, such that the material of the open end zone of a metal can supported by the first support member in a device being operative seeks a path between the anvil and the roller.
- A very effective ironing is achieved herewith as minimal axial forces are exerted on the can wall.
- A particular embodiment has the feature that the angle has a value in the order of magnitude of 0,5°.
- In a practical embodiment the bearing construction for the freely-rotating roller revolves with respect to the fixedly disposed can. This permits a very simple construction. It will be apparent that the complementary arrangement is also possible. What is important here is the relative movement of the roller relative to the can.
- The roller and the anvil must be very hard. For an acceptable stand-time use can for instance be made of hard-metal or another material with a very high wear resistance and hardness.
- A certain flexibility in the construction can be useful in order to properly position the co-acting surfaces relative to one another under all conditions. Excessive rigidity in the construction can result in extremely great forces which could have an adverse effect on the useful life of the device.
- The annexed drawing shows a device according to the invention. In the drawing:
- figure 1 shows a cross sectional view of a device according to the invention;
- figure 2 shows on enlarged scale the detail II in figure 1;
- figure 3 shows a cross section through the anvil and the freely-rotating roller in the situation where a modelling operation is about to take place;
- figure 4 shows a detail of an end wall of a can after processing by the device according to the invention; and
- figure 5 is a perspective view of a can provided with a constriction by the device according to figure 1.
- Figures 1 and 2 show a device 1 for forming a constriction 2 on the open end zone of a metal can 3 with a cylindrical body, which device comprises:
asupport member 4 for supporting thebottom 5 of thecan 3 and for pushing displacement thereof inaxial direction 6 by means of a pushing member 7 which is controlled in suitable manner by a control unit (not shown);
anannular anvil 8 placed coaxially of thissupport member 4, on the inner side of which facing thesupport member 4 aninternal modelling surface 9 is present which in the direction away from thesupport member 4 has a form adapted to the desired shape of the constriction 2; and
a freely-rotatingroller 10 likewise having a form adapted to that of the desired constriction 2 and therefore to the shape of themodelling surface 9, whichroller 10 can press the end zone of the positioned can 3 forcefully against themodelling surface 9, whichroller 10 is carried by asupport member 11 which forms part of arotor 12 with an externally placedpinion 13 that co-acts with adrive gear wheel 14 which is connected to a drive motor (not drawn) such that therotor 12 can thereby be set into a rotating movement, wherein the freely-rotatingroller 10 is driven in a circular path concentric to theannular modelling surface 9, wherein the axis ofrotation 15 extends at least approximately in the saidaxial direction 6. - The
support member 4 is guided slidably in axial direction in acylinder block 16 which forms part of aframe 17 in which the anvil ring is clamped and to which therotor 12 is rotatably connected by means of abearing unit 18. - The
support member 11 is pivotally connected via apivot shaft 19 to therotor 12. The views according to figures 1 and 2 should be understood such that in the situation shown therein the freely-rotatingroller 10 engages forcibly in a direction containing at least a considerable radial component. The rotational sense ofrotor 12 is indicated by 20. - The axis of
rotation 15 of the freely-rotatingroller 10 lies substantially in a tangential plane and forms an angle of roughly 0.5° with the saidaxial direction 6. Figures 1 and 2 show this angle in a somewhat exaggerated manner for the sake of clarity. In order to obtain a correct angle therotor 12 is supported on the one side by a pressure spring 21 and is placed in a sloping position counter to the action of the pressure spring by means of an adjustingscrew 22 protruding outside therotor 12. The freely-rotatingroller 10 is supported rotatably by thesupport member 11 by means of a roller bearing 24. - Figure 3 shows the co-acting shapes of the
modelling surface 9 of theanvil 8 and theroller 10. In the situation shown in figure 3 acan 3 is introduced into the transition zone between theanvil 8 androller 10. Due to the rolling movement ofroller 10 over the annular inner surface of theanvil 8 the can is pulled inward with itsopen end zone 23, whereby the constriction 2 is formed, as is shown in figure 4.
Claims (2)
- Device (1) for forming a constriction (2) on the open end zone of a metal can (3) with a cylindrical body, having a longitudinal axis comprising:(1) a first support member (4) for supporting the bottom (5) of a can (3) and for pushing said can (3) along a central axis (6) of the device (1), said central axis (6) coinciding with said longitudinal axis;(2) an annular anvil (8) placed coaxially of said first support member (4), on the inner side of which an internal shaping surface (9) is present having a shape adapted to the desired shape of the constriction (2); and(3) a freely-rotating roller (10) having a shape adapted to the shape of the shaping surface (9), which roller (10) can press the end zone of a can (3), being pushed by said first support member (4), forcefully against the shaping surface (9), which roller (10) is carried by a second support member (11) driven by drive means (12, 13, 14) in a circular path concentric to said annular shaping surface (9), wherein the axis of rotation (15) of the freely-rotating roller (10) lies in a plane which is tangential to a cylinder having the central axis (6) as longitudinal axis,characterized in that
the rotational axis (15) of the freely-rotating roller (10) forms a small angle with the direction of the central axis (6), such that the material of the open end zone of a metal can (3) supported by the first support member (4) in a device being operative seeks a path between the anvil (8) and the roller (10). - Device as claimed in claim 1, characterized in that the angle has a value in the order of magnitude of 0,5°.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9100574 | 1991-04-03 | ||
NL9100574 | 1991-04-03 | ||
NL9101493A NL9101493A (en) | 1991-04-03 | 1991-09-04 | Device for forming a narrowed section on the open end zone of a metal bush (sleeve) |
NL9101493 | 1991-09-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0507380A1 EP0507380A1 (en) | 1992-10-07 |
EP0507380B1 true EP0507380B1 (en) | 1995-10-18 |
Family
ID=26646833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92200838A Expired - Lifetime EP0507380B1 (en) | 1991-04-03 | 1992-03-23 | Device for forming a constriction on the open end zone of a metal can |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0507380B1 (en) |
JP (1) | JPH0687045A (en) |
AT (1) | ATE129172T1 (en) |
AU (1) | AU644728B2 (en) |
CA (1) | CA2063863A1 (en) |
CZ (1) | CZ282918B6 (en) |
DE (1) | DE69205473T2 (en) |
DK (1) | DK0507380T3 (en) |
ES (1) | ES2089361T3 (en) |
GR (1) | GR3018589T3 (en) |
PL (1) | PL168821B1 (en) |
RU (1) | RU2107198C1 (en) |
SK (1) | SK279427B6 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5813267A (en) * | 1996-02-28 | 1998-09-29 | Crown Cork & Seal Company, Inc. | Methods and apparatus for reducing flange width variations in die necked container bodies |
US6032502A (en) * | 1998-08-31 | 2000-03-07 | American National Can Co. | Apparatus and method for necking containers |
AR027371A1 (en) | 2000-02-10 | 2003-03-26 | Envases Uk Ltd | DEFORMATION OF SLIM WALL BODIES |
IT1319569B1 (en) * | 2000-12-18 | 2003-10-20 | Frattini Costr Mecc | DEVICE FOR THE DEFORMATION OF EXTRUDED OR DRAWN BODIES. |
CN110871226A (en) * | 2018-08-30 | 2020-03-10 | 爱孚迪(上海)制造系统工程有限公司 | Pre-binding device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1842447A (en) * | 1929-02-13 | 1932-01-26 | American Can Co | Apparatus for preparing drum head can bodies |
US3754424A (en) * | 1972-05-17 | 1973-08-28 | Gulf & Western Ind Prod Co | Method for necking-in can bodies |
US3898828A (en) * | 1973-10-01 | 1975-08-12 | American Can Co | Die assembly and method for interior roll-necking-in a tubular member |
DE2847736A1 (en) * | 1978-11-03 | 1980-05-22 | Schuler Gmbh L | DEVICE FOR PRODUCING A SICK ON THE CIRCUMFERENCE OF A HOLLOW CYLINDER |
US4450700A (en) * | 1982-11-15 | 1984-05-29 | Reynolds Metals Company | Method and apparatus for necking and flanging container bodies |
-
1992
- 1992-03-23 EP EP92200838A patent/EP0507380B1/en not_active Expired - Lifetime
- 1992-03-23 DE DE69205473T patent/DE69205473T2/en not_active Expired - Fee Related
- 1992-03-23 AT AT92200838T patent/ATE129172T1/en not_active IP Right Cessation
- 1992-03-23 DK DK92200838.8T patent/DK0507380T3/en active
- 1992-03-23 ES ES92200838T patent/ES2089361T3/en not_active Expired - Lifetime
- 1992-03-24 CA CA002063863A patent/CA2063863A1/en not_active Abandoned
- 1992-04-01 PL PL92294070A patent/PL168821B1/en unknown
- 1992-04-02 JP JP4080691A patent/JPH0687045A/en active Pending
- 1992-04-02 RU SU5011335A patent/RU2107198C1/en active
- 1992-04-02 AU AU13996/92A patent/AU644728B2/en not_active Ceased
- 1992-04-03 CZ CS921018A patent/CZ282918B6/en not_active IP Right Cessation
- 1992-04-03 SK SK1018-92A patent/SK279427B6/en unknown
-
1996
- 1996-01-03 GR GR960400006T patent/GR3018589T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL294070A1 (en) | 1993-03-08 |
DK0507380T3 (en) | 1995-11-27 |
GR3018589T3 (en) | 1996-04-30 |
DE69205473T2 (en) | 1996-03-14 |
EP0507380A1 (en) | 1992-10-07 |
ES2089361T3 (en) | 1996-10-01 |
DE69205473D1 (en) | 1995-11-23 |
CZ282918B6 (en) | 1997-11-12 |
CS101892A3 (en) | 1992-10-14 |
PL168821B1 (en) | 1996-04-30 |
AU644728B2 (en) | 1993-12-16 |
AU1399692A (en) | 1992-10-08 |
RU2107198C1 (en) | 1998-03-20 |
JPH0687045A (en) | 1994-03-29 |
SK279427B6 (en) | 1998-11-04 |
CA2063863A1 (en) | 1992-10-04 |
ATE129172T1 (en) | 1995-11-15 |
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