EP3691810A1 - Procédé pour réaliser un bord retourné - Google Patents

Procédé pour réaliser un bord retourné

Info

Publication number
EP3691810A1
EP3691810A1 EP18778904.5A EP18778904A EP3691810A1 EP 3691810 A1 EP3691810 A1 EP 3691810A1 EP 18778904 A EP18778904 A EP 18778904A EP 3691810 A1 EP3691810 A1 EP 3691810A1
Authority
EP
European Patent Office
Prior art keywords
edge portion
range
edge
rolled
mpa
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
Application number
EP18778904.5A
Other languages
German (de)
English (en)
Other versions
EP3691810B1 (fr
Inventor
Beat JENZER
Sandro BERTOGG
Urs Graf
Jürg SPIELER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adval Tech Holding AG
Original Assignee
Adval Tech Holding AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Adval Tech Holding AG filed Critical Adval Tech Holding AG
Priority to PL18778904T priority Critical patent/PL3691810T3/pl
Publication of EP3691810A1 publication Critical patent/EP3691810A1/fr
Application granted granted Critical
Publication of EP3691810B1 publication Critical patent/EP3691810B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B21D51/2623—Curling
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/12—Edge-curling
    • 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
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles

Definitions

  • the present invention relates to a method for producing a rolled edge from an edge portion of a tube, in which a crimping die enters the edge portion and crimps it into a roll.
  • a crimping die with a certain radius moves into a pipe section previously produced by pulling on the aerosol dome and crimps the edge of this pipe section into a roll.
  • the shape and size of the rolled edge are largely determined by the geometry of the crimping die and its mentioned radius.
  • the initial zone of the rolled edge regularly does not have the desired radius, but a more straight-lined shape.
  • a kind of kink arises. This effect is caused by the intrinsic stability of the sheet and is the more pronounced, the thinner and harder the sheet is.
  • irregularities in the material and in the tool which have a similar effect, and cause overall uneven, uncontrolled deformations.
  • Fig. 1 shows in a longitudinal section an aerosol dome 10 with a pipe section 11 and a crimping die 21 with a radius 22 of a Umtormtechnikmaschines 20 not shown.
  • the initial state with the still undeformed pipe section 1 1 and the crimping die 21 in his starting position shown.
  • the right part of Fig. 1 shows the crimping punch 21 in its final position.
  • the plunger 21 moves between the start and end positions, the tube section 11 (or, depending on the length of the tube section, at least one edge section thereof) along the radius 22 deforms into a roller 12.
  • Figures 2a) - 2e) show in each case a detail enlargement A of Fig. 1 details of the rolling process. Recognizable arises at the transition from Fig. 2a) to Fig.2b) to form a virtually straight-line initial zone 14 of the mentioned kink 13, which is unfavorably preserved in the further forming process according to Figures 2c) - 2e).
  • the initial zone 14 represents an uncontrolled geometry zone. It leads to a variable height H (see FIG. 2 e) of the rolled edge 12 and thus also to an uncontrolled, irregular edge geometry 15, as shown in a partial view of FIG deformed aerosol dome is shown.
  • FIG. 4 shows in a longitudinal section an aerosol dome with a tube section in a rolling tool in two positions, Although left undeformed on the left and finished rolled on the right), an aerosol dome is again denoted by 10 with a tube section 11, but here it is placed in a roll-on tool 30.
  • This comprises a Anrollstempel 31, with a radius 32, at least one hold-down 33, a plurality of counter-holder 34 and a corresponding number of slides 35.
  • the counter-holder 34 may be formed as four radially movable, together defining a circular opening or releasing segments.
  • the initial state is shown with the still undeformed pipe section 1 1 and the Anrollstempel 31 in its starting position.
  • the parts 33 - 35 are already in their final or functional position. They reach this from a release position shown in dashed lines, by first the hold-down 33 moves together with the brackets 34 down to the stop with a ring edge 16 of the aerosol dome. Then, the slider 35 are moved down to the hold 33. By being coupled via an inclined surface with the brackets 34, they push the counter-holder 34 in this case radially inwardly to its illustrated end position for the embossing process.
  • the right part of Fig. 4 shows the Anrollstempel 31 in its final position.
  • the aerosol dome 10 or its tube section 11 can subsequently be further shaped analogously to the method already explained with reference to FIGS. 1 and 2, wherein FIG. 5 shows a representation corresponding to FIG.
  • FIG. 5 shows a representation corresponding to FIG.
  • the rolled-up initial zone 14 of the tube section 11 nestles flush with the radius 22 of the crimping punch 21 in the starting position already shown on the left-hand side.
  • the radii 22 of the crimping punch 21 on the one hand and 32 of the Anrollstkovs 31 are preferably equally sized.
  • the initial zone 14 Upon further rolling with the crimping die 21, the initial zone 14 retains its controlled radius, as shown in detail B of Fig. 5 in Fig. 6, showing the finished rolled edge portion.
  • a method for producing the rolled edge to a pressure vessel wherein the rolling edge extends from the container wall to the outside and has a section through the container axis circular segment-shaped portion of at least 180 °, in which the end portion of the rolled edge is inserted, wherein the end portion in the section through the container axis is rectilinear, has a length which is greater than the radius of the circular segment-shaped portion and forms with the container axis a closing to the bottom of the pressure vessel, acute angle.
  • the method is characterized in that the edge is brought to the desired opening diameter, that the end portion of the edge is bent straight outwardly perpendicular to the container axis, wherein the tool freely shaped and thus the section is not supported nac bottom, then forming an acute Angle is bent with the container wall down, and that is then rolled up to form the circular segment-shaped portion of the edge.
  • a crimping machine for cans which have a container and a lid; wherein the crimping machine at least one crimping device, which rolls an already folded edge radially from the outside and therefor is designed to connect the lid and the container by a crimping process.
  • the tool comprises a radially outwardly engaging roller which is adapted to realize the flanging operation on the edges of the lid and the container; the method is characterized in that the (at least one) crimping device comprises a pneumatic actuator adapted to move the roller so that it is brought into contact with the can and performs the crimping operation.
  • the subject of the present application is accordingly a method for producing a rolled edge from a cylindrical edge portion of a tube, in which process an initial zone of the edge portion by a positively controlled tool is rolled or better folded into a straight flange and subsequently a crimping die in the rolled or better folded Retracts edge section and this beads into a roll.
  • the process takes place in preferably only these two steps, d. H. the cylindrical edge portion, which may optionally be previously processed (for example, surface treatment, adjustment of the concentricity, etc.) but just introduced as a cylindrical edge portion in the process is processed in exactly these two steps, namely by folded in the first step and subsequently in second step this folded edge is rolled. Further steps are preferably not provided.
  • the method preferably comprises only these two steps. It is therefore preferably a two-stage process for producing a rolled edge from a cylindrical edge portion of a pipe, which method consists of said first step and said second step to provide the final roll edge intended for use.
  • the method is characterized in that in said first step of folding the initial zone of the edge portion by the one in the first step, preferably axially at least partially in the opening of the edge portion entering Umlegestkov and preferably a counter-comprehensive tool by an angle (a) in the range of 75-105 ° from the axial direction to a substantially radial circumferential flange is folded.
  • the angle ⁇ of this flange is preferably in the range of 80-100 °, preferably in the range of 85-95 °.
  • the Umlegestempel thereby has a corresponding to said Umlegewinkel relative to the axis of the edge portion inclined planar bearing surface and the counter-holder via a substantially parallel thereto also plane counter surface. If the reversal punch is inserted from above into the cylindrical edge section, the counter surface of the counterstay thus supports the folded section downwards, thus allowing a controlled process with small bending radii, even with hard materials due to the supported process control.
  • a preferred embodiment of the method is characterized in that the bending radius r between the peripheral flange and the axial portion adjacent thereto is smaller than twice the material thickness s of the cylindrical edge portion.
  • the leg length of the 90 ° bend is preferably defined in a ratio based on the material thickness.
  • the bending radius r is in the range of 0.5-1.5 times, particularly preferably in the range of 0.75-1.25 times the material thickness (s) of the cylindrical edge portion.
  • a further preferred embodiment is characterized in that the radial length q of the flange is in the range of 2-5 times, preferably in the range of 3-4 times or 3-3.5 times the material thickness (s) of the cylindrical edge portion.
  • the 90 ° flange which is initially produced, is hidden to some extent in the interior of the roll during crimping.
  • the method according to a further preferred embodiment characterized in that the substantially linear portion of the flange is placed in the following on the folding roles by the crimping punch in the interior of the roll, and is preferably directed in a substantially radial direction in the role.
  • the material thickness of the edge portion is preferably in the range of 0.05-1 mm, preferably in the range of 0.15-0.4 mm, in particular preferably in the range of 0.18-0.34 mm.
  • the material of the edge portion is typically steel sheet, preferably tinplate.
  • the material used for the edge section is furthermore preferably sheet steel with a yield strength (determined according to EN 10202: 2001, in particular Chapter 8.2 and the measuring method according to DIN EN 10002-1: 2001) of at least 500 MPa, preferably at least 520 MPa, especially preferably at least 550 MPa.
  • the material used for the edge section may, according to a preferred embodiment, be sheet steel having a tensile strength (determined according to EN 10202: 2001, in particular Chapter 8.2 and the measuring method according to DIN EN 10002-1: 2001) of at least 500 MPa, preferably of at least 550 MPa, especially preferably at least 575 MPa act.
  • the material of the edge section is typically TH520 tinplate (material number 1.0384), TH550 (material number 1.0373), TH580 (material number 1.0382), TH620 (material number 1.0374), or the corresponding TS types, in each case according to DIN EN 10202: 2001 Alternatively formulated as type DR8, DR8, DR8.5, or DR9, respectively according to AISI / ASTM 623.
  • TH520 tinplate material number 1.0384
  • TH550 material number 1.0373
  • TH580 material number 1.0382
  • TH620 material number 1.0374
  • TS types in each case according to DIN EN 10202: 2001
  • the corresponding compositions and properties of these materials are defined in the given standards, the corresponding disclosure in the mentioned standards is expressly used for the definition of specific Materials included herein are included in the present disclosure.
  • the crimping die In order for the folded edge to be reliably and subsequently reliably rolled, the crimping die preferably has an encompassing angle of at least 100 °, preferably of at least 120 °.
  • the tool normally has a number of outer counter-retainers which are radially adjustable with respect to the tube axis and a reversal punch, and rolling is carried out in the following steps:
  • the rolled edge is typically applied to a tubular portion of a aerosol dome for spray cans for receiving a valve disk, optionally with additional forming steps, in particular for the preparation of attachment to the spray can, in parallel or in addition to the steps discussed above.
  • the present invention relates to the use of such a method for producing a rolled edge, in particular for producing an aerosol dome with such a rolled edge for a spray can.
  • the present invention relates to a rolled edge, in particular as part of an aerosol dome for a spray can, produced by a method as set forth above or a spray can with such a rolled edge.
  • Fig. 7 is an illustration of an aerosol dome and a Umlegestkovs and
  • Fig. 8 is a plan view of the transfer tool
  • FIG. 9 is an illustration of an aerosol dome in the rolling tool with crimping die, but with the aerosol dome already having a folded-over initial zone;
  • FIG. 10 is a detailed enlargement according to B in FIG. 9, showing in detail a finished rolled edge according to the invention;
  • Fig. 11 is a detailed view of the folded portion prior to treatment with the hemming.
  • Figures 7-1 1 show, in different representations and in different process stages, the newly proposed method for producing a rolled edge, now just also possible using harder than the earlier possible materials.
  • the step of folding the initial zone 14 is shown in the tool, on the left side still with the tool open, and on the right side already in the tool state, in which the edge is folded over to a circumferential flange 41.
  • the axial portion 42 laterally and around the circumference of counter-holding elements 34 includes, and from above a Umlegest Zi 37 is introduced with a narrow radius 36 in the opening along the axis 44.
  • the initial region 14 is folded over at a right angle and with the formation of a comparatively sharp edge substantially at a right angle, that is to say approximately 90 °, as can be seen in FIG. 7 on the right-hand side.
  • FIG. 8 shows a possible tool for carrying out this first operation of producing the rolled edge in a plan view.
  • the counter-holders 34 each have a radial arm 38, relative to the tool axis 44, and to some extent the axial portion 42 of the workpiece circumferentially encompassing each slightly wider than 90 ° circumference comprising areas 39th
  • the actual roll edge is generated, this is shown in FIG. Again on the left side of the state when the tool is still open, that is, in that state where the crimping punch 21 is indeed introduced into the opening of the prepared dome, but has not reshaped the edge region.
  • the crimping punch 21 has a relatively large enclosing angle 48 of approximately 120 °.
  • Other tool elements, in particular counter-holders, can also be provided in this step, but are not mandatory.
  • the crimping die 21 moves axially into the opening and now rolls the axial section 42 to the actual roll 12.
  • the folded-over initial zone remains substantially unchanged.
  • the quasi-linear folded portion 41 and the sharp bend 40 are substantially retained, but do not bother, since the edge is rolled so far to the roller 12 until the quasi-linear region 41 to some extent in the interior 47 of the roller 12 shows.
  • material thickness and radius and bending length are tuned specifically. The individual parameters for this are shown in FIG. 11.
  • the Umlegewinkel oc on the other hand, the bending length q, that is, the radial extent of the flange, and the material thickness s.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

L'invention concerne un procédé pour la réalisation d'un bord retourné à partir d'une partie de bord cylindrique (11) d'un tuyau. Dans ce procédé, une zone de début (14) de la partie de bord (11) est roulée par un outil (30) commandé de manière certaine. Un poinçon de pré-ourlage (21) passe ensuite sur la partie de bord (11) roulée et la borde en un rouleau (12). Le procédé est caractérisé en ce que la zone de début (14) de la partie de bord (11) est repliée d'un angle (α) dans la plage de 75 à 105° de la direction axiale (45) en une bride (41) s'étendant essentiellement radialement sur le pourtour par l'outil (30) comprenant un poinçon de repliage (37) et un contre-support (34). L'invention concerne en outre des éléments, en particulier en forme d'un dôme de bombe aérosol, comprenant de tels bords retournés.
EP18778904.5A 2017-10-02 2018-09-27 Procédé de fabrication d'un bord roulé, usage d'un tel procédé pour la fabrication d'un dome d'aerosol pour une bombe aerosol et telle bombe aerosol Active EP3691810B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18778904T PL3691810T3 (pl) 2017-10-02 2018-09-27 Sposób wytwarzania wywiniętego obrzeża

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17194330 2017-10-02
PCT/EP2018/076201 WO2019068539A1 (fr) 2017-10-02 2018-09-27 Procédé pour réaliser un bord retourné

Publications (2)

Publication Number Publication Date
EP3691810A1 true EP3691810A1 (fr) 2020-08-12
EP3691810B1 EP3691810B1 (fr) 2021-09-01

Family

ID=60001768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18778904.5A Active EP3691810B1 (fr) 2017-10-02 2018-09-27 Procédé de fabrication d'un bord roulé, usage d'un tel procédé pour la fabrication d'un dome d'aerosol pour une bombe aerosol et telle bombe aerosol

Country Status (7)

Country Link
US (1) US11498105B2 (fr)
EP (1) EP3691810B1 (fr)
JP (1) JP7261228B2 (fr)
CN (1) CN111372700B (fr)
ES (1) ES2898759T3 (fr)
PL (1) PL3691810T3 (fr)
WO (1) WO2019068539A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4101558A1 (fr) 2021-06-10 2022-12-14 Adval Tech Holding AG Procédé de fabrication d'un dôme d'aérosol
WO2024105098A1 (fr) 2022-11-18 2024-05-23 Adval Tech Holding Ag Procédé de fabrication d'un dôme d'aérosol

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114453473A (zh) * 2022-01-17 2022-05-10 十堰东森汽车密封件有限公司 一种高效翻边压头

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685338A (en) * 1970-04-24 1972-08-22 Krause Ass F A Hem formation
US4113133A (en) 1972-06-05 1978-09-12 Cebal Rolled edge in cans
FR2187447B1 (fr) * 1972-06-05 1974-12-27 Cebal Gp
WO2002081118A1 (fr) 2001-04-06 2002-10-17 Adval Tech Holding Ag Procédé pour réaliser un bord retourné
JP4346951B2 (ja) * 2003-05-08 2009-10-21 株式会社ベステックスキョーエイ フューエルインレットの製造方法
US7503741B2 (en) * 2007-01-16 2009-03-17 Omnitech International, Inc. Formation of a curl in a unitary closable container
DE102007018778A1 (de) * 2007-04-17 2008-10-30 Beiersdorf Ag Mehrfarbig bedruckter und geprägter Deckel für Cremedosen und Verfahren zur Herstellung solcher Deckel
ITMI20120032U1 (it) 2012-02-06 2013-08-07 Jalal Mohtaramzadeh Aggraffatrice per lattina
JP6539562B2 (ja) * 2015-10-16 2019-07-03 株式会社三五 フランジの成形方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4101558A1 (fr) 2021-06-10 2022-12-14 Adval Tech Holding AG Procédé de fabrication d'un dôme d'aérosol
WO2024105098A1 (fr) 2022-11-18 2024-05-23 Adval Tech Holding Ag Procédé de fabrication d'un dôme d'aérosol

Also Published As

Publication number Publication date
ES2898759T3 (es) 2022-03-08
CN111372700B (zh) 2022-08-30
JP2020535969A (ja) 2020-12-10
EP3691810B1 (fr) 2021-09-01
WO2019068539A1 (fr) 2019-04-11
US20200246854A1 (en) 2020-08-06
US11498105B2 (en) 2022-11-15
PL3691810T3 (pl) 2022-03-21
JP7261228B2 (ja) 2023-04-19
CN111372700A (zh) 2020-07-03

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