EP1818116A1 - Verfahren zur Herstellung von Dosen und Verpackungen aus Metall, und Fertigungslinie zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur Herstellung von Dosen und Verpackungen aus Metall, und Fertigungslinie zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP1818116A1
EP1818116A1 EP06124527A EP06124527A EP1818116A1 EP 1818116 A1 EP1818116 A1 EP 1818116A1 EP 06124527 A EP06124527 A EP 06124527A EP 06124527 A EP06124527 A EP 06124527A EP 1818116 A1 EP1818116 A1 EP 1818116A1
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Prior art keywords
expansion
station
ferrules
containers
container
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EP06124527A
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English (en)
French (fr)
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EP1818116B1 (de
Inventor
Robert Malinie
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Sabatier SAS
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Sabatier SAS
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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
    • B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged

Definitions

  • the present invention relates to the field of manufacturing cylindrical and / or cylindro-conical metal containers and packages.
  • Such containers and packaging are used in industry in many formats for the packaging of food products or industrial products such as paints, oils, solvents and various chemical products or others.
  • Such containers and packages may be fully open; they are then generically called “buckets”, or closed, in which case we generally speak of "3-piece packaging", as well as cans or touques.
  • the buckets are composed of at least one cylindrical shell at one end of which is crimped a bottom and whose other end is completely open. They are preferably of generally conical shape to be stacked when empty, this conical shape being obtained by partial expansion of the cylindrical shell prior to crimping the bottom.
  • the cans are composed of a cylindrical shell at the ends of which are crimped flanges (bottom and cover), including if necessary a bung or neck filler / emptying.
  • said cans are then of generally conical or cylindro-conical shape so as to be homogeneous with the fully open containers and use the same basic components, including crimped bottoms and covers, for capping the ends of the ferrule cylindrical starting, which is also expanded and / or machined before crimping the bottom and lid.
  • the invention more particularly relates to a method of manufacturing containers and packaging of the aforementioned type which improves the quality and the homogeneity thereof and a manufacturing line for carrying out this process.
  • the manufacture of buckets and drums is carried out from cylindrical ferrules of white metal, where appropriate treated or coated to satisfy the packaging of the products for which the packaging is intended.
  • These cylindrical ferrules which are rolled and welded undergo different machining, forming and assembly operations to form the packages as described above. These operations are currently taking place, for the manufacture of a bucket, according to the following sequence.
  • a conical or cylindro-conical expansion of the ferrules is carried out by means of an automatic expansion head provided with mechanical spacers.
  • the conicity imparted during the expansion may be variable depending on the height of the ferrules, so as to obtain at the end of expansion constant dimensions at each end to be able to use for the closure of the components (bottoms and covers) of standard dimensions .
  • the upper part of the expanded ferrules is then rolled in one or more passes, then in the production of single or multiple rods on the walls of the ferrules.
  • the shaped ferrules are then turned over, and they are flanged on the bottom side to then be able to distribute and crimp a circular bottom on the previously bordered side to form the bucket. With the bottom crimped, the bucket is then turned over again for finishing operations, including the welding of cabochons for attaching a loop to the walls of the bucket and the forming and placing of a gripping loop in the bucket. the cabochons.
  • the present invention aims to solve the problems of metal packaging manufacturing processes stated above.
  • the objectives of the invention are, in particular, to obtain regular flanging and crimping of the metal ferrules with which the packages are made, to improve the transfer of packaging throughout the production chain compared to processes by simplifying known transfer devices and facilitate the adjustment of these devices to improve ergonomics of use by operators.
  • the method of the invention also aims to reduce the mechanical impact of expansion operations on the ferrules of the metal containers manufactured to reduce material losses and thus reduce the costs of manufacturing processes of metal buckets.
  • the manufacturing method according to the invention has a modified sequence of operations compared to the state of the art, which in itself provides many advantages.
  • the fact of carrying out the operations of curling and crimping before expansion makes it possible to work on unexpanded ferrules and thus having no difference in height between them.
  • a regular curling and crimping is achieved by eliminating the differences in height between ferrules that may exist when these operations are performed after expansion as was done in the state of the art.
  • said curling station is located upstream of said crimping station itself located upstream of said turning station and said expansion station so as to perform the operations of flanging the ferrules and crimping the funds on said shells prior to the operations of reversal and expansion thereof as recommended by the method of the invention as described above.
  • said curling tool comprises locking sectors movable radially to the longitudinal axis of said tool and being adapted to produce, when actuated, a first radial expansion of the ferrule simultaneously with the curling of its upper end, said first expansion being intended to connect with the main expansion made at the expansion station.
  • This production line implements and thus exploits all the advantages provided by the new sequence of operations of the method of the invention and adds advantages of mechanical simplification, ergonomics of use, ease of adjustment and flexibility. of production compared to the prior art.
  • Figure 1 shows a line 1 of metal packaging manufacturing as known from the state of the art.
  • This production line is composed of individual posts arranged in a modular way one after the other to perform the operations of forming and assembly of packaging such as buckets and metal cans of a capacity up to 250 liters.
  • it proceeds initially to a conical expansion or cylindro-conical operation of V ferrules of identical size to form the body of packages made.
  • This expansion is performed at a first station 2 having a mechanical expansion head 2 1 .
  • the expanded shells are then rolled and lined at a second station 3 and then returned to a third station by an automatic device 4 as described in the patent application. US 2003/0136639 A1 .
  • the shells are then crimped onto a fourth station 5, and the packaging thus formed is again returned by an automatic turning device 6, finishing operations such as the welding of cabochons and the setting place of a loop being made at the level of a last station 7.
  • the present invention provides a method of manufacturing metal buckets and cans and a manufacturing line for the implementation of this process which are simplified compared to the method of the prior art and provide a significant improvement in the quality of packaging produced.
  • This method and this production line 8 are illustrated schematically in FIG. 2.
  • the main originality of the manufacturing method of the invention resides mainly in a modification of the sequence of the manufacturing operations compared to the prior art starting with the operations of curling and crimping funds, with a corresponding adaptation of the tools necessary for the realization of each operation on the various positions of the manufacturing lines.
  • the production sequence is as follows.
  • a cylindrical metal shell V of fixed height H and of diameter D is taken, which is held vertically along its longitudinal axis on a transfer table 12 by first blocking means of a stepwise transfer device 9 represented by FIG. in FIG. 3, the said locking means being in this case circumferential gripping means for the ferrules such as tongs 91.
  • Said ferrule is brought initially at a flanging and crimping station 10 where the upper end of said ferrule is deformed to form a flange at the circumference thereof.
  • a metal disk (not shown) is mechanically distributed and positioned on the same station 10 on the previously formed flange and said metal disk is mechanically crimped with said flange to form the bottom of a said container E.
  • said turning device 11 comprises a circular transfer means 111 of the containers E according to a horizontal axis of rotation directed perpendicular to the translational displacement direction of said containers on said transfer table 12.
  • This circular transfer means 111 comprises a contact surface having a concavity complementary to the cylindrical shape of the crimped ferrules before expansion, said surface of contact comprising locking means by adhesion ferrules to prevent slippage of the containers during the turnaround.
  • the reversal takes place on crimped containers, so already rigid, cylindrical and without rushes.
  • the turning device 11 is therefore much simpler than in the sequence corresponding to the prior art, for which it is necessary to return non-rigid ferrules, variable taper and provided with rod in number and any position depending on the type of container to produce.
  • the curling, crimping and turning are thus, according to the method of the invention, on unexpanded ferrules, thus cylindrical.
  • the result of these operations is therefore perfectly regular, both in its constancy from one side to the other of the same container and from one container to another.
  • the returned containers are then transferred by a transfer device 13 ( Figure 3), equipped with second means 131 for locking the containers at their bottom, to a conical or cylindro-conical expansion station 14.
  • a mechanical expansion tool 141 then produces an enlargement of the ferrule over at least a portion of its height H for form the body of the container.
  • the measurement of the expansion is a function of the height H of the body of the container manufactured so as to obtain at the end of expansion constant dimensions at each end of said body, which makes it possible to use for the bottom, and where appropriate the container cover of standard size components.
  • the production line 8 of the invention may also comprise downstream of said expansion station 14, for the production of completely closed containers and containers such as cans, at least one second curbing station and at least a second crimping station to border and crimp a lid, or a disc similar to that constituting the bottom, the second end of the containers, ie the upper part of the containers after turning.
  • the rolling station 15 may be preferably placed upstream or between said second flanging and crimping stations. This item 15 can also in this case be excluded from the production line 8.
  • the container is held in position by means of magnetic locking means integrated into the table. transfer 12 and in contact with the bottom of the container previously crimped at the station 13.
  • the first adaptations reside in a structural simplification of the transfer devices 9, 13 used on the production line 8. These transfer devices are shown in FIG. 3. These devices 9, 13 are step-by-step conveyors capable of grasping and moving in translation the ferrules and containers manufactured post station on the production line 8. They both have a structure and operation similar to the transfer device described in the document US 6, 371, 277 B1 . However, the blocking and gripping means of the shells and containers of the transfer devices 9, 13 of the present invention could be simplified compared with those of the transfer device of FIG. US 6, 371, 277 B1 .
  • the operations of flanging and crimping a bottom on the metal ferrules are carried out before the expansion of said ferrules, and consequently the diameter D of said ferrules is constant until expansion which makes it possible to use on the transfer device 9 means for circumferentially gripping the ferrules such as the clamps 91, shown in FIGS. 3 and 4, of concave shape and integral with vertical arms 92 fixed and articulated on longitudinal members 93 translators and rotators driven by a mechanism 94 to cam 941 and crank 942 actuated by a geared motor 95.
  • These grippers 91 are able to engage around the ferrules to block and move them and then move away from them to release them by rotation of the spars .
  • These clamps 91 no longer require adjustment means or adjustments to adapt to the conical or cylindro-conical shape of expanded shells as in the prior art which makes their installation and their simpler maintenance for the operators of the production line 8.
  • the gripping of the ferrules is safer and firm which significantly increases the operational safety and productivity of the production line 8.
  • the diameter of the containers manufactured at said bottom is therefore not affected by the expansion operation and is constant throughout the process, the rigidity of the container in the crimping plane being further increased relative to the rest of the container.
  • This advantageously makes it possible to use on the second transfer device 13 means for circumferentially locking the receptacles by their bottom which are tongs 131 having a concavity adapted to the external shape of the crimped bottom of said receptacles for blocking said receptacles by their bottom. device as shown in Figure 5.
  • these grippers 131 are fastened to horizontal crosspieces 132 fixed to integral vertical cleats 133 of longitudinal members 134, which are translators and rotators driven by a mechanism 135 with a cam 1351 and a crank 1352 actuated by a motorcycle.
  • the clamps 131 are thus able to engage around the bottom of the containers to block and move them step by step between the stations 14 to 17, the crimped bottom of the containers being used both as a flat transfer face , rigid and without asperities, and as rigid transfer part and geometry perfectly constant whatever the height of the containers.
  • the transfer tongs 131 which are adapted to the external shape of these crimped bottoms are inherently placed at the level of the transfer tables, and do not constitute any obstacle to the access of the containers when the machine requires manual access, contrary to the situation. of the prior art for which non-crimped ferrules bearing on the wafer and having a solder pin capable of being blocked in any discontinuity of the transfer tables are transferred.
  • FIGS. 6A to 6C Another element of the production line 8 has been adapted specifically for the implementation of the manufacturing process of the invention.
  • This is the curling tool used at station 12.
  • This curling tool is represented in various views in FIGS. 6A to 6C in a first so-called closed use position, and in FIGS. 7A to 7C in a second position of FIG. so-called open use.
  • Said flanging tool comprises a cylindrical mandrel 121 and rotatable capable of penetrating into the ferrules at one of their ends.
  • This punch comprises a flange 122 guiding in translation inside said ferrules directed vertically along the longitudinal axis ZZ 'of said mandrel. From this flange 122 are integral, in the lower part of the mandrel, an upper leveling plating comprising sectors 124 and a lower blocking stage comprising sectors 123, said sectors 123, 124 having an outer profile 1231, 1241 semicircular.
  • These sectors 123, 124 are movable from a closed position (FIGS. 6A and 6B) to an open position (FIGS. 7A and 7B) under the action of an actuator 125 movable in translation along the axis ZZ 'of said mandrel.
  • Said actuator 125 has portions of conical or frustoconical longitudinal section which cooperate by their lateral flanks inclined respectively with the base of the sectors 123 and with the base of pushing fingers 1242 of the sectors 124.
  • the said bases of the sectors 123 and the fingers 1242 may be equipped with rolling rollers 126 on said lateral flanks of the actuator 125 so that the translational movements of the actuator generates translational movements of the sectors 123, 124 of the mandrel radially to the axis ZZ 'thereof. Said radial movement is also guided by sliding of said sectors on rods 127, said rods 127 extending through slots 1232, 1242 formed in sectors radially to the semicircular profile 1231, 1241 thereof.
  • said locking sectors 123 and curling 124 respectively make it possible, when they are actuated and therefore in the open position, to make a first radial expansion of the shell V at its upper end V1, and an axial locking of the ferrule V and the flanging of the upper edge V2 of said ferrule.
  • the first expansion aims to produce a pre-expanded profile intended to connecting with the main expansion that will take place later at station 14, the axial locking preventing slippage of the shell V in rotation or translation around relative to the punch during the flanging operation.
  • said sectors 123, 124 are in the closed position, it is possible to insert or extract the punch of the ferrule V which is then no longer in contact with the punch.
  • the pleating is performed after the main expansion.
  • the blocking sectors are much less effective because they can not expand the ferrule at the risk of producing unsightly marks.
  • the curling tool also comprises knobs 128 capable of cooperating with said tiers of buckling sectors 124 for gripping the upper edge V2 over the entire circumference of said ferrules against said bordering sectors 124 as shown in FIGS. 6B, 6C and 7B, 7C.
  • knobs allow a counter-pressure on the outer wall of the ferrules which improves the blocking thereof during the flanging operation while allowing by its shape the formation at the edge of a fillet of connection of the lined end V2 of the ferrule to the pre-expanded wall of the ferrule V, which limits the zone of plastic deformation (limitation of the stretched metal length on the height of the shell) of the metal and standardizes the mechanical stresses applied in the deformation zone of the metal on the periphery of the ferrule when curling.
  • the expansion station 14 has also been modified to adapt it to the work of ferrules already set with a background.
  • the expansion head 141 has been shortened so that it does not interfere with the crimped bottom of the containers and thus risk damaging it.
  • said expansion station 14, as indeed most of the other stations of the production line 8 comprises a lifting table, not shown in the figures, for adjusting the height of the rings and / or containers relative to each other. tools.
  • said lifting table for the engagement of the container in the expansion head at the expansion station 14, and if necessary at the following positions, has holding magnets.
  • these magnets act on the basis of the crimped bottom of the containers and no longer on the edge of the ferrules as in the case of the prior art.
  • the force of attraction, and therefore of maintenance, is thus more than four times higher and is no longer affected by the possible presence of solder pins on the edge of the ferrules. This has made it possible to increase the working speed and therefore the productivity of the machine by more than 20% compared to the methods and manufacturing lines of the prior art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Laminated Bodies (AREA)
EP06124527A 2006-02-09 2006-11-22 Verfahren zur Herstellung von Dosen und Verpackungen aus Metall, und Fertigungslinie zur Durchführung dieses Verfahrens Active EP1818116B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0601156A FR2897002B1 (fr) 2006-02-09 2006-02-09 Procede de fabrication de recipients et emballages metalliques et ligne de fabrication pour sa mise en oeuvre

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EP1818116A1 true EP1818116A1 (de) 2007-08-15
EP1818116B1 EP1818116B1 (de) 2009-09-23

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EP (1) EP1818116B1 (de)
AT (1) ATE443581T1 (de)
DE (1) DE602006009370D1 (de)
ES (1) ES2333743T3 (de)
FR (1) FR2897002B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102259140A (zh) * 2011-07-05 2011-11-30 靳佃会 全自动太阳能外桶加工机
CN102773327A (zh) * 2012-08-02 2012-11-14 广东莱雅化工有限公司 一种多工位制罐机
CN102814426A (zh) * 2012-07-19 2012-12-12 东莞市精丽制罐有限公司 罐体生产***
CN104475614A (zh) * 2014-12-08 2015-04-01 苏州华源包装股份有限公司 一种钢桶生产工艺及其对应的四工位加工装置
CN111299445A (zh) * 2019-12-13 2020-06-19 杭州纽格润工程技术有限公司 立式卷封机
CN114160699A (zh) * 2021-11-08 2022-03-11 苏州华源控股股份有限公司 一种用于制造罐体的制作工艺
WO2023077594A1 (zh) * 2021-11-08 2023-05-11 苏州华源控股股份有限公司 一种伺服控制制造罐设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106475489A (zh) * 2016-10-10 2017-03-08 苏州华源包装股份有限公司 一种桶的生产线工艺及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041001A1 (de) * 1980-10-31 1982-05-19 Wilhelm Bender & Söhne, Blechwarenfabrik, 3000 Hannover Kegelstumpffoermige feinblechdose sowie verfahren und vorichtung zu ihrer herstellung
JPS59144534A (ja) * 1983-02-08 1984-08-18 Keishi Nakano 缶の成形方法
NL9300262A (nl) * 1984-02-15 1993-07-01 Palime Sa Werkwijze voor het vervaardigen van een holle, in hoofdzaak kegelvormige plaatmetalen houder.
US6371277B1 (en) * 1998-02-09 2002-04-16 Elpatronic Ag Conveyor device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041001A1 (de) * 1980-10-31 1982-05-19 Wilhelm Bender & Söhne, Blechwarenfabrik, 3000 Hannover Kegelstumpffoermige feinblechdose sowie verfahren und vorichtung zu ihrer herstellung
JPS59144534A (ja) * 1983-02-08 1984-08-18 Keishi Nakano 缶の成形方法
NL9300262A (nl) * 1984-02-15 1993-07-01 Palime Sa Werkwijze voor het vervaardigen van een holle, in hoofdzaak kegelvormige plaatmetalen houder.
US6371277B1 (en) * 1998-02-09 2002-04-16 Elpatronic Ag Conveyor device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 274 (M - 345) 14 December 1984 (1984-12-14) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102259140A (zh) * 2011-07-05 2011-11-30 靳佃会 全自动太阳能外桶加工机
CN102259140B (zh) * 2011-07-05 2013-04-17 日照光慧机械设备有限公司 全自动太阳能外桶加工机
CN102814426A (zh) * 2012-07-19 2012-12-12 东莞市精丽制罐有限公司 罐体生产***
CN102773327A (zh) * 2012-08-02 2012-11-14 广东莱雅化工有限公司 一种多工位制罐机
CN102773327B (zh) * 2012-08-02 2014-10-15 广东莱雅化工有限公司 一种多工位制罐机
CN104475614A (zh) * 2014-12-08 2015-04-01 苏州华源包装股份有限公司 一种钢桶生产工艺及其对应的四工位加工装置
CN104475614B (zh) * 2014-12-08 2016-08-17 苏州华源包装股份有限公司 一种钢桶生产工艺及其对应的四工位加工装置
CN111299445A (zh) * 2019-12-13 2020-06-19 杭州纽格润工程技术有限公司 立式卷封机
CN111299445B (zh) * 2019-12-13 2021-08-27 杭州纽格润工程技术有限公司 立式卷封机
CN114160699A (zh) * 2021-11-08 2022-03-11 苏州华源控股股份有限公司 一种用于制造罐体的制作工艺
WO2023077594A1 (zh) * 2021-11-08 2023-05-11 苏州华源控股股份有限公司 一种伺服控制制造罐设备
CN114160699B (zh) * 2021-11-08 2023-05-23 苏州华源控股股份有限公司 一种用于制造罐体的制作工艺

Also Published As

Publication number Publication date
ATE443581T1 (de) 2009-10-15
ES2333743T3 (es) 2010-02-26
EP1818116B1 (de) 2009-09-23
FR2897002B1 (fr) 2009-02-27
FR2897002A1 (fr) 2007-08-10
DE602006009370D1 (de) 2009-11-05

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