CN102245327A - Improvements in or relating to a method of forming metal articles - Google Patents
Improvements in or relating to a method of forming metal articles Download PDFInfo
- Publication number
- CN102245327A CN102245327A CN2009801392182A CN200980139218A CN102245327A CN 102245327 A CN102245327 A CN 102245327A CN 2009801392182 A CN2009801392182 A CN 2009801392182A CN 200980139218 A CN200980139218 A CN 200980139218A CN 102245327 A CN102245327 A CN 102245327A
- Authority
- CN
- China
- Prior art keywords
- described method
- arbitrary aforementioned
- openend
- blank
- expansion
- 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
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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
- B21D51/2669—Transforming the shape of formed can bodies; Forming can bodies from flattened tubular blanks; Flattening can bodies
-
- 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
- B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged
Abstract
There is provided a method of forming a shaped metal closure from a tubular blank (10) having a closed end and an open end, comprising the steps of: i. at least one expansion step at a point axially displaced from the open end; and ii. at least one reduction step at a point axially displaced from the open end.
Description
Technical field
The present invention relates to the method for form metal closure member, specifically form the method for the metal closure that is shaped from tubular blank with blind end and openend.
Background technology
From easy rapidoprint for example aluminium production metal closure be known.Typically, these closure members are generally formed by the flat-sheet material of relative thin, this sheet material can initially be shaped by one or a series of mould or spinning flange machining tool, thereby so that forms the cup-shaped that cylindrical shape, tubular blank produce lengthwise that is roughly of axial end sealing and other end opening.Usually such blank before being applied to bottle neck, during and stand some processing steps afterwards, for example in side rolled thread, annular knurl, rip cutting with apply incrustation.
The shape of metal closure is generally limited to general cylindrical shape when adopting standard technique.But known, for example WO2006/075132 and WO99/32242 form so that improve the aesthetic feeling and/or the physical property of resulting closure member the metal closure sidewall.Yet these methods only rely on expansion step, the scope that this restriction blank can be formed.
Summary of the invention
The present invention seeks the way that adopts known metal closure production technology to solve this problem.
According to a first aspect of the invention, provide the method for the metal closure that form to be shaped from tubular blank, may further comprise the steps: at least one expansion step of axially carrying out away from the point of openend with blind end and openend; With reduce step at least one of axially carrying out away from a point of openend.
Described method can comprise two or more expansion step.This zone of two or more expansions can be provided and/or the blank that expands gradually so that reduce the risk split.
Described method can comprise that two or more reduce step.This can provide two or more to reduce the zone and/or reduce blank gradually so that reduce the risk of splitting.
Described expansion step can use positive formation instrument to carry out.The shape of described positive formation instrument can be fixed.Also can use other instrument (for example scalable axle).
The described step of reducing utilizes female mold to carry out.This mould can be a solid shape.The described step of reducing can use positive formation instrument to carry out equally, makes blank be shaped to inside from the outside.
Expansion in succession and reduce step and can more and more carry out near the place of openend.In other words, shaping is carried out towards openend downwards from blind end.
Described method can also comprise one or more in the openend location or the enlarging step of carrying out in the openend zone.Described enlarging step is carried out after can and reducing step in described expansion.Described enlarging can be crooked or straight line and can be in angle less than 45 degree with respect to the longitudinal axis of described blank.
Described method can also be included in the annular knurl step of carrying out in blind end location or the blind end zone.Described annular knurl step can expand and reduce step before and/or implement afterwards.
Described method can also be included in the pre-shaping step that the open end of blank is carried out.Described pre-shaping step is used to obtain the shell length of needs.Typically, this will carry out after expanding and reducing step.
Described method can also comprise the rip cutting step.Described rip cutting can be used for for example increasing easy crisp line around blank, so that can make it to rupture on first opening of metal closure after adding a cover, to steal feature as showing.
The wall thickness of metal tube (at least when described forming process begins) can be less than 1 millimeter and can be less than 0.25 millimeter, for example 0.23 millimeter.
According to optional aspect of the present invention, provide the metal closure of utilizing method described herein to form.
Description of drawings
The present invention describes by example in more detail now with reference to accompanying drawing, wherein:
Fig. 1 is a series of accompanying drawings of explanation according to the process of the manufacturing process of the first embodiment of the present invention; With
Fig. 2 is a series of accompanying drawings and the literal of explanation according to the process of the manufacturing process of optional embodiment of the present invention.
The specific embodiment
At first, show tubular blank 10 with reference to figure 1.Described blank comprises the cylinder side wall 15 that at one end seals with dish type top board 20.In this embodiment, the blind end of blank possesses a plurality of axial indentation or the muscle 25 that extends around its periphery.In addition, circumferential groove 30 is formed on indentation 25 belows.
In the stage one of described method, sun formation instrument is inserted in the blank and cause that in sidewall length A circumference expands from groove 30 downstreams.
In the stage two, the blank experience is reduced step, makes the blank that inserts positive formation instrument through former in this step.Circumference takes place to reduce in the result on length B, this produces protuberance 35 in sidewall 15.
In the stage three, use second expansion step to expand on length C, to make sidewall 15 circumference.This expansion step utilizes positive formation instrument to realize.
In the stage four, utilize second to reduce step and come sidewall 15 circumference are reduced, it produces on sidewall 15 and swells 40.This reduces step and realizes through former by making the blank that inserts positive formation instrument in it.
In the stage five, on length E, by inserting the outside enlarging of openend that positive formation instrument makes sidewall 15.Produce the closure member mouth 45 of enlarging.
With reference now to Fig. 2,, shows the tubular blank that indicates with 110.Blank 110 comprises the general cylindrical shape sidewall 115 that at one end seals with dish type top board 120.In this embodiment, the blind end of blank is provided with a plurality of axial indentation or the muscle 125 that extends around its periphery.In addition, circumferential groove 130 is formed on indentation 125 belows.
Introduce the series of work stations of the blank 110 that is used to be shaped below.
The blank 110 that station 1 to 3 preparation is used to be shaped.Station 1 loads blank from feed and enters in the forming machine, and station 2 clamping blanks preparations are used to be shaped and station 3 is provided for the lubricated of blank so that allow former to work.
At the station 4 of described method, with sun formation instrument insert in the blank with from groove 130 downstreams in the sidewall length A
1On carry out circumference and expand; In station 5 and 6, in succession in length A
2And A
3On carry out bigger expansion step.By the sidewall that expands gradually, the risk that sidewall splits is lowered.
In station 7 and 8, two of blank experience are bigger in succession reduces step, forms at sun to make blank pass female mold when mould inserts in these steps.The result is that circumference reduces and at first occurs in length B
1On occur in length B then
2On, this produces protuberance 135 on sidewall 115.By reducing sidewall gradually, the risk of splitting is lowered.
In station 9 and 10, the expansion step of using second series is with in length C
1, C
2On sidewall 115 circumference are expanded.These expansion step are all passed through sun and are formed the mould realization.By expanding sidewall gradually, the risk of splitting is lowered.
Lubricated again at station 11 blanks.
In station 12 and 13, that uses second series reduces step with at length D
1, D
2On sidewall 115 circumference are reduced, this produces protuberance 140 on sidewall 115, reduce step and realize by making blank pass female mold when inserting positive formation instrument.By reducing sidewall gradually, the risk of splitting is lowered.
In the present embodiment, station 14 is empty, but is available, for example, if desired, is used for further reducing step.
At station 15, the openend of blank is trimmed so that obtain required closure member length.
In station 17 and 18, the openend of blank 110 is by inserting positive formation instrument at length E
1And E
2Go up outside enlarging, described instrument gos deep into sidewall gradually more.The result forms the mouth 145 of enlarging.
At station 19, carry out the rip cutting operation with the lead-ingroove choma, it steals feature as showing subsequently.
At station 20, to check defective, any closure member that does not satisfy standard all will be discharged from the new shaping closure member that forms by the phase machine check.
At station 21, closure member is loaded into and will be used for the equipment of container neck finished product (not shown).
Claims (15)
1. the method for a metal closure that form to be shaped from the tubular blank with blind end and openend comprises step:
I. at least one expansion step is axially being carried out away from the place of openend; With
Ii. at least one reduces step, is axially carrying out away from the place of openend.
2. as the described method of arbitrary aforementioned claim, comprise two or more expansion step.
3. as the described method of arbitrary aforementioned claim, comprise that two or more reduce step.
4. as the described method of arbitrary aforementioned claim, wherein said expansion step utilization sun formation instrument is carried out.
5. method as claimed in claim 4, the shape of described positive formation instrument is fixed.
6. as the described method of arbitrary aforementioned claim, the wherein said step of reducing utilizes female mold to carry out.
7. method as claimed in claim 6, described female mold is a solid shape.
8. as claim 6 or the described method of claim 7, the wherein said step of reducing uses positive formation instrument to carry out.
9. as the described method of arbitrary aforementioned claim, wherein expansion in succession and reduce step and carry out in the place of more close openend in succession.
10. as the described method of arbitrary aforementioned claim, also comprise the enlarging step that one or more carries out at openend.
11. as the described method of arbitrary aforementioned claim, wherein enlarging step is carried out in described expansion step with after reducing step.
12., also be included in the annular knurl step that blind end carries out as the described method of arbitrary aforementioned claim.
13. as the described method of arbitrary aforementioned claim, also be included in the pre-shaping step that the openend of blank carries out.
14., also comprise the rip cutting step as the described method of arbitrary aforementioned claim.
15. the metal closure of using the described method of arbitrary aforementioned claim to form.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0817942.6A GB0817942D0 (en) | 2008-10-01 | 2008-10-01 | A method of shaping metal closures |
| GB0817942.6 | 2008-10-01 | ||
| PCT/GB2009/001287 WO2010037996A1 (en) | 2008-10-01 | 2009-05-22 | Improvements in or relating to a method of forming metal articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102245327A true CN102245327A (en) | 2011-11-16 |
| CN102245327B CN102245327B (en) | 2014-11-12 |
Family
ID=40019849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980139218.2A Active CN102245327B (en) | 2008-10-01 | 2009-05-22 | Improvements in method of forming metal articles |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2342030B1 (en) |
| CN (1) | CN102245327B (en) |
| ES (1) | ES2770645T3 (en) |
| GB (1) | GB0817942D0 (en) |
| MY (1) | MY175340A (en) |
| PL (1) | PL2342030T3 (en) |
| WO (1) | WO2010037996A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH475804A (en) * | 1967-06-26 | 1969-07-31 | Alusuisse | Method of manufacturing a metal casing and casing obtained by implementing the method |
| HU185394B (en) * | 1980-12-05 | 1985-01-28 | Matravideki Femmuevek | Method for forming the neck and spout part of aluminium aerosol bottles |
| FR2731929B1 (en) * | 1995-03-21 | 1997-06-13 | Lorraine Laminage | PROCESS FOR MANUFACTURING A SHAPED METAL BOX |
| FR2731927B1 (en) * | 1995-03-21 | 1997-06-13 | Lorraine Laminage | PROCESS FOR MANUFACTURING A SHAPED METAL BOX |
| GB9726606D0 (en) | 1997-12-18 | 1998-02-18 | Metal Box Plc | Can shaping |
| KR20060065587A (en) * | 2003-06-27 | 2006-06-14 | 토요세이깐 가부시키가이샤 | Container opening structure, container provided with the opening structure and method of manufacturing the opening structure |
| EP1681110A1 (en) * | 2005-01-17 | 2006-07-19 | Crown Packaging Technology Inc | Method of shaping metal closures or can bodies |
-
2008
- 2008-10-01 GB GBGB0817942.6A patent/GB0817942D0/en not_active Ceased
-
2009
- 2009-05-22 EP EP09784582.0A patent/EP2342030B1/en active Active
- 2009-05-22 MY MYPI2011001235A patent/MY175340A/en unknown
- 2009-05-22 CN CN200980139218.2A patent/CN102245327B/en active Active
- 2009-05-22 PL PL09784582T patent/PL2342030T3/en unknown
- 2009-05-22 ES ES09784582T patent/ES2770645T3/en active Active
- 2009-05-22 WO PCT/GB2009/001287 patent/WO2010037996A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP2342030A1 (en) | 2011-07-13 |
| GB0817942D0 (en) | 2008-11-05 |
| ES2770645T3 (en) | 2020-07-02 |
| MY175340A (en) | 2020-06-19 |
| CN102245327B (en) | 2014-11-12 |
| WO2010037996A1 (en) | 2010-04-08 |
| EP2342030B1 (en) | 2019-11-06 |
| PL2342030T3 (en) | 2020-08-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200430 Address after: Lu Senbaolusenbao Patentee after: GCL International Ltd. Address before: England Patentee before: United locking Plastic Co.,Ltd. Effective date of registration: 20200430 Address after: England Patentee after: United locking Plastic Co.,Ltd. Address before: Swiss Lai Patentee before: OBRIST CLOSURES SWITZERLAND GmbH |
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| TR01 | Transfer of patent right |