EP0131159A2 - Method and device for making grooves in a tin body - Google Patents
Method and device for making grooves in a tin body Download PDFInfo
- Publication number
- EP0131159A2 EP0131159A2 EP84106484A EP84106484A EP0131159A2 EP 0131159 A2 EP0131159 A2 EP 0131159A2 EP 84106484 A EP84106484 A EP 84106484A EP 84106484 A EP84106484 A EP 84106484A EP 0131159 A2 EP0131159 A2 EP 0131159A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stamps
- grooves
- tin body
- ridges
- driving means
- 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.)
- Granted
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
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
Definitions
- the invention relates to a method and a device for making grooves in the body of a tin.
- Radial grooves are provided in tin bodies for stiffening the tin wall to an extent such that a smaller wall thickness can be sufficient. This results in saving of material.
- the application of radial grooves caused some strength reduction in an axial direction.
- a reduction of axial length is caused by radial grooves.
- In order to optimize the radial strengthening with an acceptable axial strength grooves of accurately defined depth and profile have to be made. Only with an optimum shape and size of the grooves it is possible to minimize the wall thickness.
- the object of the invention is to obviate these disadvantages by providing a novel method of making grooves in tin bodies.
- grooves are made in a tin body by arranging the wall of the tin body between tools radially displaceable in opposite senses towards the tin body, one tool being provided with ridges and the other tool with grooves registering with the ridges, said tools being subsequently moved towards one another.
- the ridged tool is moved to form the grooves so that the second tool serves as a counter-bearing.
- the method can be carried out by a device characterized by circularly arranged, vertically outwardly movable first stamps, first driving means for the radial movement of said first stamps, radially inwardly movable second stamps arranged in a circle around the first stamps, second driving means for moving said second stamps, said stamps being respectively provided with registering ridges and grooves and being movable between a first open position leaving a gap between the stamps and a closed position in which the ridges engage in the grooves and by transport means for moving a tin body axially into and out of said gap respectively.
- the on-going stroke of the transport means can be limited.
- the resilient stop stretches the tin body. Since only the outer ridged stamps are radially displaced, the second tool serves as a counter-bearing.
- the driving means can be actuated synchronously by means of an axially movable plunger.
- the driving means may each have a bevelled face co-operating with a bevelled part of the associated stamp.
- a tin body 1 is introduced between two stamps 2 and 3, one stamp 2 having ridges 4 and the other stamp 3 having grooves 5 registering with the ridges.
- the stamps 2 and 3 are driven by first and second driving means 6 and 7 respectively.
- the driving means 6 and 7 and the co-operating faces of the stamps 2 and 3 are formed so that during the first part of the axially directed stroke of the driving means 6, 7 (see Fig. 2) the stamps 2 and 3 are radially moved towards one another, whereas during the last part of the stroke (see Fig. 3) solely stamp 2 is radially moved and hence stamp 3 serves as a counter-bearing.
- the radial movement producing the grooves in the tin body 1 is, therefore, performed solely by stamp 2.
- the driving means 6, 7 move in opposite axial directions, the stamps 2 and 3 move radially in opposite senses and the tin body is again released.
- Fig. 5 schematically shows the way in which tins 1 are fed to a device as shown in Figs. 6 and 7 in which the assembly of Figs. 1 to 4 is arranged.
- the tins (Fig. 5) are moved by a worm conveyor 8 in a feeder 9 into a device embodying the invention, which comprises in this embodiment six identical processing stations 10.
- a tin body 1 is moved to a processing station 10.
- the unit with the stamps is fixed by means of a cap nut 12 to a plunger housing 13 of an upper plunger 14.
- the plunger 14 is driven by a profiled upper disc 15 and a roller 16.
- the tin body 1 is moved upwards by means of a lower plunger 17 driven by a lower disc 18 into the unit 11.
- the tin body 1 is then enclosed in the feed head 19.
- the upper part can be set in height with the aid of a setting spindle 20. In this way the desired setting for the tin height can be chosen. Since the upper part is adjustable, there is no need for setting a lower part and hence of the feeding part of the tin bodies.
- the tin body 1 is introduced into the gap between the stamps 2 and 3 up to a resilient stop 22.
- the spring 23 ensures the ejection of the tin body.
- the driving means for the stamps 2 and 3, and 6, 7 respectively and the part 24 are fastened to the plunger 14 with the interposition of a spring structure 25.
- the cylindrical part 21 serves as a guide for the moving parts.
- the driving means 6 and 7 move the stamps 2 and 3 in a manner such that the stamps 3 move radially outwards and engage the tin body.
- the stroke of the driving means 7 is limited by the stop 26.
- the driving means 6 for the stamps 2 are moved axially so that the stamps 2 perform a radially inward movement and make the grooves in the tin body 1, whilst the inner stamps 3 serve as counter-bearings.
- the plunger 14 moves in the opposite axial direction so that again a gap is formed between the stamps 2 and 3.
- the tin body is then moved to the outside by the head provided with magnets.
- Fig. 8 shows that the stamps 2 and 3 are disposed opposite one another in segments of a circle.
Abstract
Description
- The invention relates to a method and a device for making grooves in the body of a tin.
- Radial grooves are provided in tin bodies for stiffening the tin wall to an extent such that a smaller wall thickness can be sufficient. This results in saving of material. The application of radial grooves caused some strength reduction in an axial direction. Moreover a reduction of axial length is caused by radial grooves. In order to optimize the radial strengthening with an acceptable axial strength grooves of accurately defined depth and profile have to be made. Only with an optimum shape and size of the grooves it is possible to minimize the wall thickness.
- Hitherto the grooves have been rolled in the tin body. The disadvantage of this method is that the tolerances are fairly large. This is due inter alia to slip of the forming rollers and the plurality of revolutions of the rollers required to form the grooves. A further drawback of rolling is the phenomenon of the so-called spiralizing occurring in particular in two-partite tins. Moreover damage may be caused of the lacquer applied before the grooves are made. Rolling furthermore only permits of making circular grooves.
- The object of the invention is to obviate these disadvantages by providing a novel method of making grooves in tin bodies. According to the invention grooves are made in a tin body by arranging the wall of the tin body between tools radially displaceable in opposite senses towards the tin body, one tool being provided with ridges and the other tool with grooves registering with the ridges, said tools being subsequently moved towards one another.
- This method eliminates the inconveniences of rolling. In the method according to the invention the tin will only slightly shift along the tools so that damage of the lacquer does not occur. Moreover, the axial reduction in length in making the grooves is limited since in the method embodyig the invention the material will yield less readily. The material will show more elasticity so that sharper grooves are formed, which will improve the radial strength. Owing to these improvements the wall thickness of the tin can be reduced. By this method it is furthermore possible to make other than circular grooves, for example, sloping grooves or rhombic patterns. Both in a radial and an axial direction the strength can thus be improved.
- In a preferred embodiment only the ridged tool is moved to form the grooves so that the second tool serves as a counter-bearing.
- The method can be carried out by a device characterized by circularly arranged, vertically outwardly movable first stamps, first driving means for the radial movement of said first stamps, radially inwardly movable second stamps arranged in a circle around the first stamps, second driving means for moving said second stamps, said stamps being respectively provided with registering ridges and grooves and being movable between a first open position leaving a gap between the stamps and a closed position in which the ridges engage in the grooves and by transport means for moving a tin body axially into and out of said gap respectively.
- By a spring-loaded stop the on-going stroke of the transport means can be limited. After the application of the grooves the resilient stop stretches the tin body. Since only the outer ridged stamps are radially displaced, the second tool serves as a counter-bearing.
- The driving means can be actuated synchronously by means of an axially movable plunger. The driving means may each have a bevelled face co-operating with a bevelled part of the associated stamp.
- The invention will be described more fully with reference to the drawings, which show in
- Figs. 1 to 4 different positions of stamps making grooves in a tin body when the method embodying the invention is being carried into effect,
- Fig. 5 schematically the supply of tins to the device embodying the invention,
- Fig. 6 a sectional view of the device embodying the invention,
- Fig. 7 on an enlarged scale part of the device of Fig. 6,
- Fig. 8 a sectional view taken on the line VIII-VIII in Fig. 7,
- Fig. 9 a sectional view like Fig. 7 in the closed position of the device,
- Fig. 10 a sectional view taken on the line X-X in Fig. 9.
- In accordance with the method embodying the invention (see Figs. 1 to 4) a
tin body 1 is introduced between twostamps 2 and 3, onestamp 2 having ridges 4 and the other stamp 3 havinggrooves 5 registering with the ridges. Thestamps 2 and 3 are driven by first and second driving means 6 and 7 respectively. The driving means 6 and 7 and the co-operating faces of thestamps 2 and 3 are formed so that during the first part of the axially directed stroke of the driving means 6, 7 (see Fig. 2) thestamps 2 and 3 are radially moved towards one another, whereas during the last part of the stroke (see Fig. 3) solelystamp 2 is radially moved and hence stamp 3 serves as a counter-bearing. The radial movement producing the grooves in thetin body 1 is, therefore, performed solely bystamp 2. After the formation of the grooves the driving means 6, 7 (see Fig. 4) move in opposite axial directions, thestamps 2 and 3 move radially in opposite senses and the tin body is again released. - Fig. 5 schematically shows the way in which
tins 1 are fed to a device as shown in Figs. 6 and 7 in which the assembly of Figs. 1 to 4 is arranged. The tins (Fig. 5) are moved by a worm conveyor 8 in a feeder 9 into a device embodying the invention, which comprises in this embodiment sixidentical processing stations 10. - With the aid of the feeder 9 (see Fig. 6) a
tin body 1 is moved to aprocessing station 10. The unit with the stamps is fixed by means of acap nut 12 to aplunger housing 13 of anupper plunger 14. Theplunger 14 is driven by a profiledupper disc 15 and aroller 16. Thetin body 1 is moved upwards by means of alower plunger 17 driven by alower disc 18 into theunit 11. Thetin body 1 is then enclosed in thefeed head 19. The upper part can be set in height with the aid of a setting spindle 20. In this way the desired setting for the tin height can be chosen. Since the upper part is adjustable, there is no need for setting a lower part and hence of the feeding part of the tin bodies. - From Figs. 7 to 10 it will be apparent that the
tin body 1 is introduced into the gap between thestamps 2 and 3 up to aresilient stop 22. After the process thespring 23 ensures the ejection of the tin body. The driving means for thestamps part 24 are fastened to theplunger 14 with the interposition of aspring structure 25. Thecylindrical part 21 serves as a guide for the moving parts. During the performance of a stroke of theplunger 14 the driving means 6 and 7 move thestamps 2 and 3 in a manner such that the stamps 3 move radially outwards and engage the tin body. The stroke of the driving means 7 is limited by thestop 26. During the remaining part of the stroke of theplunger 14 the driving means 6 for thestamps 2 are moved axially so that thestamps 2 perform a radially inward movement and make the grooves in thetin body 1, whilst the inner stamps 3 serve as counter-bearings. Subsequently theplunger 14 moves in the opposite axial direction so that again a gap is formed between thestamps 2 and 3. The tin body is then moved to the outside by the head provided with magnets. - Fig. 8 shows that the
stamps 2 and 3 are disposed opposite one another in segments of a circle.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84106484T ATE29847T1 (en) | 1983-06-09 | 1984-06-06 | METHOD AND APPARATUS FOR FORMING GROOVES IN A CAN JACKET. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8302057 | 1983-06-09 | ||
NL8302057A NL8302057A (en) | 1983-06-09 | 1983-06-09 | METHOD AND APPARATUS FOR GROOVING IN A BUSROMP |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0131159A2 true EP0131159A2 (en) | 1985-01-16 |
EP0131159A3 EP0131159A3 (en) | 1985-07-03 |
EP0131159B1 EP0131159B1 (en) | 1987-09-23 |
Family
ID=19841981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84106484A Expired EP0131159B1 (en) | 1983-06-09 | 1984-06-06 | Method and device for making grooves in a tin body |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0131159B1 (en) |
AT (1) | ATE29847T1 (en) |
DE (1) | DE3466360D1 (en) |
NL (1) | NL8302057A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0193589B1 (en) * | 1984-09-04 | 1989-04-12 | DIETZEL, Klaus | Apparatus and method for producing a hose fitting shell |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1890039A (en) * | 1930-12-26 | 1932-12-06 | Max Ams Machine Co | Shaping and flanging hachine |
DE1452774B2 (en) * | 1963-09-18 | 1974-04-11 | Metal Containers Ltd., London | Device for forming a number of circumferential beads in a sheet metal blank |
US4380165A (en) * | 1980-05-29 | 1983-04-19 | Thomassen & Drijver-Verblifa N.V. | Squeezer flanger |
-
1983
- 1983-06-09 NL NL8302057A patent/NL8302057A/en not_active Application Discontinuation
-
1984
- 1984-06-06 EP EP84106484A patent/EP0131159B1/en not_active Expired
- 1984-06-06 AT AT84106484T patent/ATE29847T1/en not_active IP Right Cessation
- 1984-06-06 DE DE8484106484T patent/DE3466360D1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1890039A (en) * | 1930-12-26 | 1932-12-06 | Max Ams Machine Co | Shaping and flanging hachine |
DE1452774B2 (en) * | 1963-09-18 | 1974-04-11 | Metal Containers Ltd., London | Device for forming a number of circumferential beads in a sheet metal blank |
US4380165A (en) * | 1980-05-29 | 1983-04-19 | Thomassen & Drijver-Verblifa N.V. | Squeezer flanger |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0193589B1 (en) * | 1984-09-04 | 1989-04-12 | DIETZEL, Klaus | Apparatus and method for producing a hose fitting shell |
Also Published As
Publication number | Publication date |
---|---|
DE3466360D1 (en) | 1987-10-29 |
EP0131159B1 (en) | 1987-09-23 |
EP0131159A3 (en) | 1985-07-03 |
ATE29847T1 (en) | 1987-10-15 |
NL8302057A (en) | 1985-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4808053A (en) | Apparatus for making a necked-in container with a double seam on container cover | |
EP0930111B1 (en) | Flange reforming apparatus | |
US5881593A (en) | Method and apparatus for forming a bottom-profiled cup | |
US8375761B2 (en) | Method for producing an internally or externally toothed cup-shaped sheet material component and corresponding device | |
US5353619A (en) | Apparatus and method for necking tubular members such as containers | |
WO2012127026A2 (en) | Device and method for cutting off an end section of a can blank | |
US4207761A (en) | Apparatus for flanging can bodies | |
EP0006321B1 (en) | Apparatus for operating on hollow workpieces | |
JPH02104431A (en) | Method and device for molding, remolding and edge-rolling in shell in one press | |
US3391439A (en) | Method of making tapered disk wheel | |
JPH0353056B2 (en) | ||
GB2199780A (en) | Method and apparatus for forming containers | |
CN108480475A (en) | A kind of uncoiling blanking mold and blanking process | |
US3446167A (en) | Rotary drawing,ironing and doming press for partially extruded can bodies | |
US7188499B2 (en) | Method and device for processing outer shape of can shell | |
EP0131159A2 (en) | Method and device for making grooves in a tin body | |
US4147049A (en) | Drawing heavy walled parts | |
US4183315A (en) | Method and apparatus for making a can end seam | |
US4339939A (en) | Drawing heavy walled parts | |
US3466731A (en) | Method and apparatus for forming and inserting liners in closures | |
EP0106435B1 (en) | Air transfer system for a shell press | |
JPH03184643A (en) | Machine for forming bead on cylindrical can body | |
US4554814A (en) | Air transfer system and method for a shell press | |
US4843930A (en) | Apparatus for trimming a tubular article | |
US3481232A (en) | Method and apparatus for making nonpilferable container closures |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
17P | Request for examination filed |
Effective date: 19851018 |
|
17Q | First examination report despatched |
Effective date: 19860327 |
|
R17C | First examination report despatched (corrected) |
Effective date: 19860708 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO INGG. FISCHETTI & WEBER |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
REF | Corresponds to: |
Ref document number: 29847 Country of ref document: AT Date of ref document: 19871015 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3466360 Country of ref document: DE Date of ref document: 19871029 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
EAL | Se: european patent in force in sweden |
Ref document number: 84106484.3 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19980828 Year of fee payment: 15 Ref country code: BE Payment date: 19980828 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19980831 Year of fee payment: 15 Ref country code: NL Payment date: 19980831 Year of fee payment: 15 Ref country code: DE Payment date: 19980831 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19980904 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19980914 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19980915 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990606 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990606 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990630 Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990630 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990630 |
|
BERE | Be: lapsed |
Owner name: THOMASSEN & DRIJVER-VERBLIFA N.V. Effective date: 19990630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000101 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19990606 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed |
Ref document number: 84106484.3 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20000101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000503 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |