EP0772501B1 - Procede pour la formation d'une zone retrecie et bordee sur un corps creux cylindrique, et dispositif pour la mise en uvre de ce procede - Google Patents

Procede pour la formation d'une zone retrecie et bordee sur un corps creux cylindrique, et dispositif pour la mise en uvre de ce procede Download PDF

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Publication number
EP0772501B1
EP0772501B1 EP96914140A EP96914140A EP0772501B1 EP 0772501 B1 EP0772501 B1 EP 0772501B1 EP 96914140 A EP96914140 A EP 96914140A EP 96914140 A EP96914140 A EP 96914140A EP 0772501 B1 EP0772501 B1 EP 0772501B1
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EP
European Patent Office
Prior art keywords
hollow body
tools
tool
inner tools
axially
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
Application number
EP96914140A
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German (de)
English (en)
Other versions
EP0772501A1 (fr
Inventor
Jan Krüger
Harald Schmidt
Walter Sommer
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.)
SIG Cantec GmbH and Co KG
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SIG Cantec GmbH and Co KG
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Publication date
Application filed by SIG Cantec GmbH and Co KG filed Critical SIG Cantec GmbH and Co KG
Publication of EP0772501A1 publication Critical patent/EP0772501A1/fr
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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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • 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
    • 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
    • B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
    • 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
    • B21D51/263—Flanging

Definitions

  • the invention relates to a method for forming a tipped and crimped Section at one end of a cylindrical hollow body open at both ends, in particular a can frame, by means of two internal tools and one External tool, the internal tools, of which at least one is rotationally driven, moved axially relative to the hollow body in its interior and then the outer tool radially against the the internal tools located hollow body is moved that the provided section of the hollow body in one of the two inner tools commonly formed concave circumferential contour is pressed and the outer tool and the inner tools in their starting position the back of the deformed body.
  • the invention further relates to a device for performing the above Procedure for the end to be teased and flared of the cylindrical Hollow body two axially movable inner tools, of which at least one is drivable, with one corresponding to the tipped and crimped end Contour and a radially movable against the inner tools has outer mold.
  • a generic method and a corresponding device are off known from EP 0 290 874 A2.
  • the known device is suitable for Simultaneously teasing and flanging both ends of an open at both ends Can frame. It has a tool arrangement for each end each consisting of two inner tools and one outer mold.
  • the Both inner tools of each tool arrangement are as drivable Shaft fixed disc and designed as a swash plate.
  • the fixed disc has a cylindrical outer surface to which in the direction of the swashplate, a tapering contour connects the Neck contour of the finished shaped box corresponds.
  • the diameter of the cylindrical surface is smaller than the inside diameter of the tipped end the can frame and thus significantly smaller than the inside diameter of the cylindrical wall of the can frame.
  • the swashplate which by its nature is radially adjustable and accordingly has no fixed axis of rotation, is formed from two washers, the flanging or flange contour of the tipped and flared end of the can frame. Both Ring discs are fixed radially against each other by an annular shoulder, but slightly displaceable in the axial direction, the Ring shoulder has a diameter that is slightly smaller than that Inside diameter of the undeformed can frame.
  • a disadvantage of the known device is that the can frame at its Recording only due to the diameter ratio of the inner tools is gripped by a narrow edge of an annular disc. This is one safe transport of the can frame in the circumferential direction is not ensured, and it can be due to the between the can frame and the internal tools possible slip to paint damage to the can frame.
  • the two Internal tools are staggered on a common shaft Shaft sections slidably arranged against each other.
  • the wall of the can body by an eccentric Infeed of the inner tools against the outer mold pressed.
  • the outer mold cannot be moved axially, the two inner tools will work in opposite directions depending on the infeed depth axially shifted.
  • Only the outer one is driven in rotation Molding tool; the internal tools must therefore be above the one in between Can body is brought to the required target speed.
  • the ring contour of the outer mold leads to wrinkles in the (tucked) area of the Can body.
  • the two inner tools also have different diameters, whereby in this case too, at least the diameter of one of the two inner tools is significantly smaller than the inside diameter of the teased, again the body of a hollow body representing a two-part can (EP 0 588 048 A1).
  • the internal tools are arranged on a shaft, whereby one of the inner tools is axially displaceable. After the hollow body has been pushed over the two inner tools and after eccentric Infeed of one of the inner tools is done by radial infeed axially displaceable outer form roller against the wall of the hollow body the inner tools pressed. As a function of the infeed depth, the Form roller and one of the inner tools axially displaced. With this device only the axially displaceable inner tool is driven in rotation. This known device also damages the paint on the hollow body. There is also an uneven crimp.
  • Another device is known, the two axially displaceable and radial fixed inner tools as well as an axially fixed and radially movable outer Has molding tool (EP-PS 0 520 693).
  • the two have Inner tools of different diameters, the inner tool can rotate with the smaller diameter in an eccentric position, in contact with the body, which in turn forms the body of a two-part can Hollow body.
  • the outer mold is capable of radial movements perform while the cylindrical hollow body rotates. It will outer mold in the section of the to be teased and crimped Hollow body pressed. Even with this device is because of the different Diameter of the two inner tools no uniform flaring to achieve.
  • the invention is based on the object, the method and the device to improve the type mentioned in that the described Disadvantages do not occur and that with the new method or new device hollow cylindrical bodies open at both ends, in particular Frames of three-part cans, tucked and flanged to protect the surface can.
  • an additional radial frictional connection is provided between at least one inner tool and the hollow body.
  • the internal tools designed according to the invention there is a complete and uniform support of the cylindrical hollow body, whereby the tipped and flanged area of the cylindrical hollow body can be trained very evenly. Because the inner tools are arranged on separate waves, these can be after teasing (local tapering or retraction of the side wall of the cylindrical Body, English: necking) on either side of the tipped hollow body be pulled out. This allows the tools to be proportionate large, at least larger than the inside diameter of the teased Area, be trained in what a good investment of the internal tools the inner wall of the cylindrical hollow body allows. Your outside diameter is only so much smaller than the inside diameter of the hollow body that an unimpeded movement of the inner tools into the hollow body and out of this is possible.
  • the radial clamping device of the at least one inner tool which is against the inner wall of the cylindrical hollow body presses is a secure, slip-free hold of the Hollow body also accessible during the actual molding process. On uneven material intake can be avoided. Conveniently the clamping device must be operated mechanically or hydraulically.
  • a particularly expedient embodiment of the device consists in that when axially pushing the inner tools together Centering is given.
  • the inner tools a non-positive and / or positive Have coupling for transmission of torques among each other.
  • the Internal tools are provided with stop rings, the diameter of which is larger than the inside diameter of the cylindrical hollow body.
  • this is at least a rotatable inner tool with a separate, speed-controlled Drive motor connected.
  • This allows the speed of the internal tools and possibly the hollow body regardless of the speed of the Adjust the rotating body and it can turn on one turn of the hollow body related infeed of the outer tool (mm / revolution of the hollow body) be adjusted or regulated. This allows different neck contours achieve optimal.
  • the device 50 shown in FIG. 1 has several stations 51 for formation a section to be teased and crimped one at both Ends of open cylindrical hollow body 1, in particular a can frame, on.
  • the formation of a tucked and beaded section is fundamental in U.S. Patent 4,070,888, particularly in Figs. 10-14.
  • the device 50 has a body firmly connected to the machine frame 21 52 with a central axis 53.
  • the evenly around axis 53 arranged stations 51 are located in both rotating bodies 54, 55 stored.
  • the rotating bodies 54, 55 are each with a ring gear 56, 57 provided and can be synchronized by a (not shown) rotary drive be rotated.
  • the central axis of rotation 53 can, as shown, be horizontal or be arranged vertically.
  • the rotating bodies 54, 55 can also together form a body.
  • the formation of the section to be teased and crimped on both Ends of open cylindrical hollow body 1 is carried out by two of each opposite Sides insertable into the cylindrical hollow body 1 Molding tools 2 and 3 (hereinafter referred to only briefly as internal tools) and an axially fixed outer mold 4.
  • Molding tools 2 and 3 (hereinafter referred to only briefly as internal tools) and an axially fixed outer mold 4.
  • Axes 2A and 3A of inner tools 2 and 3 are aligned.
  • the Internal tools 2 and 3 are with shafts 2W and 3W in sleeves 14, 15 arranged, which in turn are each rotatably supported in a holder 16, 17 are.
  • the shafts are 2W, 3W with the associated sleeves 14 and 15, respectively e.g. via a spline connection 18 non-rotatably, but axially to each other slidably connected.
  • the inner tools 2, 3 are one or several compression springs 8 and 9 are supported against the sleeves 14 and 15 in the sense that the spring force in each case towards the other
  • the holders 16, 17 are each in a corresponding via a guide shaft 20
  • Guides 22, 23 of the rotating body 54, 55 are not rotatable in the direction of Axes 2A, 3A are slidably guided and are each driven by a linear drive Form of a control groove 24, 25 and one firmly connected to the body 52 engaging driver part 26 attached to the guide shaft 20, e.g. in the form of a guide roller, moving towards and away from each other.
  • the greatest distance between the two inner tools 2, 3 must be apart be greater than the length of the hollow body to be teased and flanged 1 (see Fig. 2).
  • annular gear 28 is attached, which with a further (not shown) rotary drive is connected.
  • the inner tool 2 has - seen in the direction of the inner tool 3 - one to the system one end of the hollow body to be teased and crimped 1 provided stop ring 5, a short cylindrical part 30, one tapering part 31 and a central recess 32.
  • the inner tool 3 has - seen in the direction of the inner tool 2 - one to the system the other end of the hollow body 1 provided stop ring 6, a relatively long cylindrical part 33, the diameter of which is somewhat smaller is the inside diameter of the one to be teased and crimped Hollow body 1, a tapered part 34 and a centering projection 7.
  • the cylindrical parts or sections 30, 33 serve to receive the teasing and flanging hollow body 1.
  • Their outer diameters are the same size and so much slightly smaller than the inside diameter of the Hollow body 1 that the inner tools 2, 3 easily withdrawn from their Position (in which they are apart) in the for detection Retracted hollow body 1 coaxial to the axes 2A, 3A can be.
  • the cylindrical hollow body 1 By rotating the inner tools 2, 3 about their own axes 2A and 3A the cylindrical hollow body 1 is also set in rotation.
  • the Andes Internal tools 2 and 3 provided stop rings 5, 6 position the cylindrical hollow body 1 in the start phase of the necking and flanging process and grasp it with the positive connection given by the springs 8, 9.
  • For mutual centering of the two inner tools 2 and 3 engages the centering approach 7 of the inner tool 3 into the recess 32 of the inner tool 2 a.
  • the outer mold 4 is designed as a profile roller and in a Rotating body 54 pivotally mounted swing arm 35 is mounted.
  • the Swing arm 35 has a driver part 36 designed as a cam roller provided, the in a fixed with respect to the body 52 control groove 37 engages.
  • the cam drive control nut 37, driver part 36
  • the outer die 4 toward the coaxial axes 2A, 3A delivered or removed from them.
  • the relevant wall section of the cylindrical hollow body pressed towards the tapered sections 31, 34.
  • the inner tools give way 2, 3 apart against the force of the springs 8, 9 accordingly.
  • the degree of tapering necking
  • the outer end of the hollow body 1 forms when in contact and sliding on the tapered end 31 an outward Flanged flange, so that there is an overall teased and flared Forms edge section on the hollow body 1.
  • the inner tool 3' has a radially acting Tensioning device 10 with a tensioning piston 11 (hereinafter only briefly Called piston), a cylinder 12 receiving the piston and one Tension chamber 13 on.
  • the piston 11 is in the direction of a compression spring 38 pressed on the inner tool 2 '. If the inner tools 2 ', 3' for Receiving a hollow body 1 are moved apart axially, is the piston 11 pushed so far out that a shoulder or projection 39 from the inner tool 3 'projects outwards.
  • the clamping chamber 13 is a cavity in the inner tool 3 'through a very thin outer wall 40 is formed.
  • the clamping chamber 13 is above a radial bore 41 in line connection with the cylinder 12. Both rooms 12, 13 and the line connection 41 are with a liquid pressure medium filled. If now the inner tools 2 ', 3' for receiving a hollow body 1 move together, the piston 11 over the projection 39 from one part the end face of the inner tool 2 'pressed into the cylinder 12. The displaced pressure medium enters the clamping chamber 13 and expands the thin wall section 40 to the outside, as shown in FIG. 4 somewhat is exaggerated. The flared outer wall portion 40 is gripped thereby the wall of the hollow body 1 and thus creates a good friction connection between the inner tool 3 'and the hollow cylinder 1, making an optimal Carriage is guaranteed.
  • the centering lug 7 of the inner tool 3 slides into the recess 32 of the Inner tool 2.
  • the centering shoulder presses 7 against a friction lining 43 arranged in the recess 32. This The friction lining and the centering projection 7 together form a frictional connection Coupling between the two inner tools, through the inner tool 2 is driven each time the inner tool 3 moves together.
  • Fig. 3 shows a drive for the gear 28, which is assigned to the inner tool is.
  • the gear 28 and the holder 17 are in the working position in dash-dotted lines and in the retracted position in extended Lines shown.
  • a motor 60 attached to the body 52 also drives a gear 62 with an internal toothing 63 on its pinion 61.
  • the gear 62 also has an external toothing 64 which engages with the gear 28 stands. Since the gear 28 is displaced axially, the external toothing has 64 a corresponding width.
  • the motor 60 is speed-controlled, regardless of the speed of the Rotating bodies 54, 55. This allows the control nut 37 to be used Infeed of the outer tool 4 with respect to one revolution of the Internal tools 2, 3 and the hollow body 1 vary.

Claims (10)

  1. Procédé pour la formation d'une zone rétrécie et bordée à une extrémité d'un corps creux cylindrique (1) ouvert aux deux extrémités, en particulier d'un corps de boíte, au moyen de deux outils intérieurs (2, 3; 2', 3') et d'un outil extérieur (4), les outils intérieurs (2, 3; 2', 3') dont un au moins est actionné en rotation étant déplacés axialement par rapport au corps creux (1) dans l'intérieur de celui-ci et l'outil extérieur (4) étant déplacé ensuite radialement contre le corps creux (1) se trouvant sur les outils intérieurs, de telle manière que sa zone prévue à cette fin est pressée dans un contour circonférentiel concave (31, 34) formé en commun par les deux outils intérieurs (2, 3; 2', 3'), et l'outil extérieur (4) et les outils intérieurs (2, 3; 2', 3') étant redéplacés dans leur position de départ avant le formage du corps creux (1),
    caractérisé par les étapes suivantes:
    faire entrer les deux outils intérieurs (2, 3; 2', 3') à partir d'une position où ils sont écartés l'un de l'autre, avec une direction opposée dans le corps creux (1),
    fixation axiale et saisie par adhérence du corps creux (1) par les outils intérieurs (2, 3; 2', 3') dans la position de leur plus faible distance l'un de l'autre,
    génération d'une adhérence supplémentaire agissant radialement entre au moins un outil intérieur (3') et le corps creux (1),
    et presser d'une manière façonnante l'outil extérieur (4) contre le corps creux (1).
  2. Procédé selon la revendication 1, caractérisé par le fait que les deux outils intérieurs (2, 3; 2', 3') sont centrés l'un contre l'autre lors du rapprochement axial.
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que, à la fin du rapprochement axial des outils intérieurs (2, 3; 2', 3'), une adhérence et/ou un engagement positif est réalisé(e) entre au moins l'outil intérieur précité (3) actionné en rotation et l'autre outil intérieur (2).
  4. Dispositif pour la mise en oeuvre du procédé selon les revendications 1 à 3, qui, pour l'extrémité à rétrécir et à border du corps creux cylindrique (1), présente deux outils intérieurs (2, 3; 2', 3') déplaçables axialement dont un au moins peut être actionné en rotation, avec un contour correspondant à l'extrémité rétrécie et bordée, ainsi qu'un outil extérieur de formage (4) qui peut être déplacé radialement par rapport aux outils intérieurs (2, 3; 2', 3'),
    caractérisé par le fait que les deux outils intérieurs (2, 3; 2', 3')
    sont disposés sur des arbres séparés (2W, 3W) dont les axes (2A, 3A) sont alignés,
    , lors de leur mobilité axiale, prennent d'un côté une position terminale où ils sont écartés l'un de l'autre, qui permet une introduction du corps creux (1) entre les outils intérieurs (2, 3; 2', 3') perpendiculaire à leur axe commun (2A, 3A), et présentent de l'autre côté une position terminale dans laquelle ils se trouvent à l'intérieur du corps creux (1),
    présentent le même diamètre dans la zone (parties cylindriques 30, 33) prévue à la réception du corps creux (1), ce diamètre n'étant que légèrement plus petit que le diamètre intérieur du corps creux cylindrique (1),
    sont logés en sus, avec leur arbre respectif (2W ou bien 3W), de manière à pouvoir être déplacés contre une pression axiale (ressorts 8, 9),
    qu'un dispositif de serrage (10) agissant radialement est prévu dans la zone d'au moins un outil intérieur (3'), qui est prévue à la réception du corps creux cylindrique (1), ce dispositif de serrage pouvant être pressé contre la paroi intérieure du corps creux cylindrique (1),
    et que, pour la formation de l'extrémité rétrécie et bordée, l'outil extérieur de formage (4; 4') peut être déplacé contre les contours de profil des outils intérieurs (2, 3; 2', 3') de telle manière que, lors de cela, les deux outils intérieurs (2, 3; 2', 3') sont écartés axialement l'un de l'autre.
  5. Dispositif selon la revendication 4, caractérisé par le fait que l'un (3) des outils intérieurs présente une projection de centrage (7) et que l'autre outil intérieur (2) présente un creux (32) correspondant, et que les outils intérieurs (2, 3; 2', 3') peuvent être approchés axialement l'un de l'autre de telle manière que la projection de centrage (7) entre dans ledit creux (32).
  6. Dispositif selon la revendication 4 ou 5, caractérisé par le fait que les outils intérieurs (2, 3; 2', 3') présentent un couplage par adhérence et/ou à engagement positif pour une transmission de couples entre eux.
  7. Dispositif selon l'une des revendications 4 à 6, caractérisé par le fait que les outils intérieurs (2, 3; 2', 3') sont pourvus de bagues de butée (5, 6) dont le diamètre est plus grand que le diamètre du corps creux cylindrique (1).
  8. Dispositif selon l'une des revendications 4 à 7, caractérisé par le fait que ledit dispositif de serrage (10) peut être actionné de manière mécanique ou hydraulique.
  9. Dispositif selon l'une des revendications 4 à 8, caractérisé par le fait que au moins l'outil intérieur précité (3) qui peut être actionné en rotation est relié à un propre moteur de commande (60) à réglage de vitesse.
  10. Dispositif selon l'une des revendications 4 à 9, caractérisé par le fait que l'outil intérieur (3, 3') avec le dispositif de serrage peut être actionné en rotation.
EP96914140A 1995-05-13 1996-04-26 Procede pour la formation d'une zone retrecie et bordee sur un corps creux cylindrique, et dispositif pour la mise en uvre de ce procede Expired - Lifetime EP0772501B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19517671 1995-05-13
DE19517671A DE19517671C2 (de) 1995-05-13 1995-05-13 Vorrichtung für die Bildung eines geneckten und gebördelten Abschnitts an einem zylindrischen Hohlkörper
PCT/EP1996/001767 WO1996035529A1 (fr) 1995-05-13 1996-04-26 Procede pour la formation d'une zone retrecie et bordee sur un corps creux cylindrique, et dispositif pour la mise en ×uvre de ce procede

Publications (2)

Publication Number Publication Date
EP0772501A1 EP0772501A1 (fr) 1997-05-14
EP0772501B1 true EP0772501B1 (fr) 2001-10-24

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EP96914140A Expired - Lifetime EP0772501B1 (fr) 1995-05-13 1996-04-26 Procede pour la formation d'une zone retrecie et bordee sur un corps creux cylindrique, et dispositif pour la mise en uvre de ce procede

Country Status (11)

Country Link
US (1) US5653138A (fr)
EP (1) EP0772501B1 (fr)
JP (1) JP3779997B2 (fr)
KR (1) KR970703824A (fr)
AT (1) ATE207393T1 (fr)
BR (1) BR9606354A (fr)
DE (2) DE19517671C2 (fr)
ES (1) ES2165983T3 (fr)
PL (1) PL181040B1 (fr)
TW (1) TW315333B (fr)
WO (1) WO1996035529A1 (fr)

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DE10209154A1 (de) * 2002-03-01 2003-09-11 Sig Cantec Gmbh & Co Kg Vorrichtung zum Umformen und/oder Falzen von Dosenzargen

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JP5007048B2 (ja) * 2005-06-16 2012-08-22 パナソニック株式会社 円筒形電池の製造方法及び円筒形電池の溝入れ加工装置
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Cited By (2)

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DE10209154A1 (de) * 2002-03-01 2003-09-11 Sig Cantec Gmbh & Co Kg Vorrichtung zum Umformen und/oder Falzen von Dosenzargen
WO2003074208A1 (fr) * 2002-03-01 2003-09-12 Sig Cantec Gmbh & Co. Kg Dispositif pour façonner et/ou plier des corps de boite de conserve

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Publication number Publication date
DE59607999D1 (de) 2001-11-29
TW315333B (fr) 1997-09-11
US5653138A (en) 1997-08-05
DE19517671A1 (de) 1996-11-14
PL317945A1 (en) 1997-05-12
DE19517671C2 (de) 2000-07-13
EP0772501A1 (fr) 1997-05-14
ATE207393T1 (de) 2001-11-15
ES2165983T3 (es) 2002-04-01
JPH10503130A (ja) 1998-03-24
JP3779997B2 (ja) 2006-05-31
KR970703824A (ko) 1997-08-09
WO1996035529A1 (fr) 1996-11-14
PL181040B1 (pl) 2001-05-31
BR9606354A (pt) 1997-12-23

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