EP0351560A2 - Machine à changer la forme de coupe transversale d'ébauches cylindriques, en particulier pour boîtes - Google Patents

Machine à changer la forme de coupe transversale d'ébauches cylindriques, en particulier pour boîtes Download PDF

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Publication number
EP0351560A2
EP0351560A2 EP19890111046 EP89111046A EP0351560A2 EP 0351560 A2 EP0351560 A2 EP 0351560A2 EP 19890111046 EP19890111046 EP 19890111046 EP 89111046 A EP89111046 A EP 89111046A EP 0351560 A2 EP0351560 A2 EP 0351560A2
Authority
EP
European Patent Office
Prior art keywords
expanding mandrel
frame
orientation
expanding
frames
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
EP19890111046
Other languages
German (de)
English (en)
Other versions
EP0351560A3 (en
EP0351560B1 (fr
Inventor
Felix Kramer
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.)
Elpatronic AG
Original Assignee
Elpatronic 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 Elpatronic AG filed Critical Elpatronic AG
Publication of EP0351560A2 publication Critical patent/EP0351560A2/fr
Publication of EP0351560A3 publication Critical patent/EP0351560A3/de
Application granted granted Critical
Publication of EP0351560B1 publication Critical patent/EP0351560B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention relates to a machine for changing the cross-sectional shape of rounded frames, in particular for cans that have a longitudinal seam - At least one expanding mandrel which has a plurality of segment bars which can be spread apart and arranged around an expanding mandrel axis, and - A slide-on device for sliding one frame each onto the expanding mandrel.
  • Such machines which are the subject of the unpublished older German patent applications P 3725186.4 and P 3811995.1, have an expanding mandrel turret which can be driven in rotation about a central axis and carries a plurality of expanding mandrels arranged around this axis.
  • the expanding mandrel turret can carry the expanding mandrels with expanding mandrel axes arranged parallel to the central axis (P 3725186.4) or can be designed in the manner of a star revolver, the expanding mandrel axes extending radially to the central axis (P 3811995.1).
  • the machines according to the older patent applications mentioned are intended to be arranged directly behind a machine for rounding the frames and producing the longitudinal seam, for example by welding. It is assumed that the frames are transported one behind the other in the direction of their axis and a certain orientation of their longitudinal seam is maintained, so that this comes to lie exactly in the middle between two segment bars when a can is pushed onto an expanding mandrel.
  • the invention has for its object to develop a machine of the type described in such a way that the rounded frames, whose cross-sectional shape is to be changed, can be fed to the longitudinal seam in any orientation and still ensure that when pushing each individual frame onto the expanding mandrel , which is to deform it, a certain position of the longitudinal seam is maintained with respect to the segment rods.
  • an orientation device is arranged coaxially with the expanding mandrel, which is designed to center a frame and can be driven in rotation about the expanding mandrel axis
  • the orientation device is assigned a sensor which interrupts the rotation of the orientation device in a predetermined position of the longitudinal seam of the frame with respect to the segment rods
  • the slide-on device is designed to move the frame from the orienting device to the expanding mandrel.
  • the machine according to the invention preferably has, in accordance with the two earlier patent applications mentioned, an expanding mandrel turret which can be driven in rotation about a central axis and carries a plurality of expanding mandrels arranged around the central axis.
  • the expanding mandrel turret can be a drum turret, star turret or crown turret in the sense defined above.
  • the invention can be further developed in that - With the expanding mandrel turret, an orientation turret is connected to rotate together about the axis and an orientation device on the orientation turret is assigned coaxially to each expanding mandrel.
  • a feed conveyor for feeding in raw frames and a discharge conveyor for removing finished frames define an intermediate floor which defines between an orientation floor defined by the orienting devices and one defined by the expanding mandrels Spreading floor is arranged.
  • the above-mentioned floors preferably have distances from one another which rule out collisions between frames arranged on different floors.
  • each individual frame carry out a total of more than one full revolution, for example with the orienting revolver and with the expanding revolver, each three quarters of a turn, so that there is ample time for orienting and deforming each frame and the frames nevertheless leave the machine at short intervals.
  • the invention can also be further developed in that the push-on device for each expanding mandrel has two grippers which are offset relative to one another in the direction of the expanding mandrel axis and can be moved back and forth together in the direction of this axis, of which a first gripper for the displacement of one frame each to the orienting device and for one The first section of the displacement of the frame from the orientation device to the associated expanding mandrel is provided, while the second gripper is provided for the rest of the displacement of the frame towards the expanding mandrel and for removing the expanded frame from the expanding mandrel.
  • the first gripper is preferably a tong gripper and the second gripper is a magnetic gripper.
  • the machine works particularly smoothly even at high turning speeds if the two revolvers can be rotated continuously while orienting and deforming the frames.
  • the machine according to the invention can be equipped with an embossing device for embossing on the side surfaces of the frames, if this is arranged on a boom which can be pivoted about the central axis in the same direction as the two revolvers and can be pivoted back in the opposite direction.
  • the cylindrical frames 10 are fed upright, but otherwise disordered, to a feed conveyor 16.
  • This includes a conveyor belt 18 which is driven at a continuously adjustable speed; for this purpose, the conveyor belt 18 is connected to a main motor 28 via a variator gear 20, a chain drive 22, a cardan shaft 24 and a branching gear 26, which also drives a central vertical shaft 30.
  • the geome trical axis of this shaft 30 is referred to below as the central axis A.
  • the feed conveyor 16 also includes a horizontal screw conveyor 32, from which the frames 10 are individually fed to a metering wheel 34, which can be rotated about a vertical axis and has recesses 36 for a frame at regular intervals on its edge.
  • the movement path of the frames 10 gripped by the metering wheel 34 is limited radially outward by a cylindrical wall section 38.
  • the cylindrical wall section 38 ends above an expanding mandrel turret 40 which is fastened to the shaft 30 and can be rotated with it about the central axis A.
  • mandrel turret 40 twelve mandrels 42 are arranged around the central axis A at regular intervals.
  • Each of the expanding mandrels 42 has an annular support body 44 fastened to the expanding mandrel turret 40, four segment rods 46 which can be moved radially with respect to the supporting body 44, and an expanding wedge 48 (FIG. 3).
  • the expanding wedge 48 of each expanding mandrel 42 can be displaced along its axis, the expanding mandrel axis B, in order to spread apart the associated segment rods 46.
  • Return springs (not shown) are provided for resetting the segment rods 46.
  • Exemplary embodiments of the expanding mandrels 42 result from the older patent applications mentioned.
  • the expanding mandrel axes B are arranged parallel to the central axis A.
  • Each expanding wedge 48 is fastened to an axial shaft 50 and carries a pair of axially parallel guide rods 52 which are guided in the expanding mandrel turret 40.
  • the lower end of each A cam follower roller 54 is mounted on the shaft 50.
  • the cam followers 54 of all expanding mandrels 42 run on a common cam body 56 which is arranged coaxially with the expanding mandrel turret 40 and is designed such that each expanding mandrel 42 executes a complete working cycle when the expanding mandrel turret 40 rotates fully.
  • the central shaft 30 extends above the expanding mandrel turret 40 through a stationary, tubular axle body 58. Above the axle body 58, an orienting turret 60 is fastened on the central shaft 30, on which twelve orienting devices 62 are mounted at equal angular intervals.
  • the orienting devices 62 are arranged coaxially with one of the expanding mandrels 40 and rotatable about the associated expanding mandrel axis B.
  • the orienting devices 62 are cup-shaped, permanently magnetized metal parts which expand downwards in such a way that they can each grasp, center and hold one of the cylindrical frames 10 conveyed by the metering wheel 34 at their upper edge.
  • Each orientation device 62 is assigned a stepping motor 64 attached to the top of the orientation turret 60, a sensor 66 attached to the bottom of the orientation turret, and an amplifier 68.
  • the sensor 66 is a light sensor that emits a signal when the longitudinal seam 12 of the frame 10 hanging on the associated, rotating orienting device 62 assumes a predetermined position.
  • This signal is amplified by the associated amplifier 68 and causes the associated stepper motor 64 to stop when the longitudinal seam 12 reaches its predetermined position Has.
  • the predetermined position is that in which the longitudinal seam 12 points forward in the direction indicated by an arrow C in FIGS. 1 and 2 of the common rotation of the expanding mandrel turret 40 and orientation turret 60.
  • a displacement device 70 is assigned to each expanding mandrel 42 and the associated orienting device 62, which rotates together with the expanding mandrel turret 40 and the orienting turret 60.
  • Each of the twelve displacement devices 70 in total has a two-armed upper gripper 72 and a one-armed magnetic lower gripper 74, both of which are movable radially and parallel to the central axis A.
  • the upper grippers 72 of all the shifting devices 70 are assigned a common curve 76 formed by a groove for lifting movements that rise and fall parallel to the main axis A, and a common curve 78 for opening and closing movements.
  • the lower grippers 74 of all the shifting devices 70 are assigned a common curve 80 for lifting movements and a further common curve 82 for radial movements. All of the curves mentioned are arranged in a stationary manner on the axle body 58.
  • the height at which the frames 10 are located on the feed conveyor 16 is referred to below as the intermediate floor E1.
  • the curves 76 and 78 are designed such that each upper gripper 72, when it reaches a certain position on the edge of the metering wheel 34, grips the cylindrical frame 10 arriving in the direction of arrow D at the same time, takes it along and then along the associated expanding mandrel axis B. from the intermediate floor E1 up to an orientation floor E2.
  • the frame 10 is pushed into the associated orientation device 62, centered by it and held by magnetic force.
  • the gripper 72 is then opened so that the frame 10 can be rotated with the orienting device 62 about the associated expanding mandrel axis B until the longitudinal seam 12 has reached the desired orientation.
  • the revolvers 40 and 60 keep rotating, for example by 210 °.
  • the associated upper gripper 72 is closed again and moves the relevant frame 10 downward from the orienting device 62 into the intermediate level E1, i.e. into the height position at which the frame 10 has arrived on the feed conveyor 16.
  • the frame 10 is magnetically grasped by the associated lower gripper 74, in order then to be moved further downward and to be plugged onto the associated expanding mandrel 42 in the direction of the expanding mandrel axis B.
  • the height at which the frame 10 is now located is referred to as the spreading level E3.
  • the revolvers 40 and 60 have rotated for example by 60 °.
  • the frame 10 is widened in a conventional manner on the expanding mandrel 42.
  • the rotation of the revolvers 40 and 60 is not interrupted in the machine shown.
  • the revolvers 40 and 60 have moved by, for example, a further 210 ° about the central axis A, the deformation of the frame 10 caused by the expanding mandrel 42 itself is completed.
  • the frame 10 is moved back up into the intermediate days E1 by the associated gripper 74 and is thereby pulled off the expanding mandrel 42.
  • the frame 10 has now reached the working area of an embossing device 84.
  • This is arranged on a radial arm 86, which is driven by a set of curves 88 and can be pivoted back and forth in an angular range of, for example, 20 ° about the central axis A.
  • the embossing device 84 produces the lateral embossments 14, which stiffen the now rectangular and conically deformed frame 10.
  • the embossing device 84 returns to its starting position in order to emboss the frame 10 arriving on the next expanding mandrel 42.
  • the frame 10 which has already been provided with the embossments 14 and is thereby finished, has reached a discharge conveyor 90 due to the more advanced rotation of the revolvers 40 and 60.
  • This includes a pair of magnetic plates 92 which are also rotated about a vertical axis by the main motor 28.
  • the finished frame 10 is separated from the gripper 74 by a stationary deflecting rail, not shown, and taken from the plates 92 to a horizontal conveyor belt 94, which is arranged on the mezzanine floor E1, that is to say at the same height as the conveyor belt 18 of the feed conveyor 16.
  • the Conveyor belt 94 is driven synchronously with the plates 92 and the revolvers 40 and 60 via a propeller shaft 96 by the main motor 28 and is magnetized so that it further conveys the finished frame 10 after it has been separated from the plates 92 by another deflecting rail, not shown .
  • the entire machine can be rotated with a handwheel 98 to set up the individual devices or to rectify faults.
  • each of the upper grippers 72 has a gripper carriage 100 which can be displaced on a pair of vertical rods attached to the orienting turret 60, namely a radially inner rod 102 and a radially outer rod 104.
  • the mentioned curve 76 ensures the displacement of the gripper carriage 100.
  • Two gripper arms 106 are pivotally mounted on the gripper carriage 100 about the rod 102, each of which carries a gripper jaw 108 and is indirectly controlled by the mentioned curve 78.
  • the indirect control comprises a rocker arm 110 which runs along the curve 78 and is fastened to a further vertical rod 112.
  • the rod 112 is rotatably mounted on the orienting turret 60 and has a cam profile on which the gripping jaws 108 are supported via a roller 114 each.
  • Each of the lower grippers 74 has a gripper slide 116, which is guided on a pair of vertical rods 118 so that it can slide.
  • the pair of rods 118 is attached to the expanding mandrel turret 40.
  • a radial pair of rods 120 is displaceably guided on the gripper slide 118, to which a magnetic gripping jaw 122 is fastened on the outside and a roller 124 is mounted radially on the inside so that it can rotate about a horizontal axis.
  • the roller 124 can be rolled on a roller track 126, which is displaceably guided on a radial pair of rods 128 and is controlled by the curve 82 mentioned.
  • the embossing device 84 is shown in more detail in FIGS. 5 and 6.
  • a pair of jaw supports 130 is pivotally mounted about a horizontal axle 132.
  • an embossing jaw 134 is mounted on a journal 136, which extends parallel to the journal 132.
  • a roller 138 is mounted at the upper end of each jaw carrier 130. Between The rollers 138 are supported on the boom 86 by a cam 140 which is controlled by a tappet 142.
  • the plunger 142 is guided on the arm 86 so as to be radially displaceable with respect to the central axis A and is loaded radially outward by a spring 144 in such a way that a roller 146 mounted on the outer end of the plunger 142 is held against a stationary control cam 148.
  • the plunger 142 executes radial movements, by means of which the stamping jaws 134 are moved towards and away from one another.
  • the embossing device 84 is assigned a horizontal control shaft 150 which is driven by the main motor 28.
  • a pair of grooved cams 152 are attached to the control shaft 150, of which a pair of lever arms 154 are controlled.
  • the two lever arms 154 are firmly connected to a lever arm 156 which is arranged approximately at right angles to them and which is connected to an arm of an angle lever 160 via a coupling rod 158 of adjustable length.
  • the angle lever 160 is pivotable about a vertical axle 162 and has a second arm which is connected to the boom 86 by a further coupling rod 164 of adjustable length.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
EP19890111046 1988-07-19 1989-06-19 Machine à changer la forme de coupe transversale d'ébauches cylindriques, en particulier pour boîtes Expired - Lifetime EP0351560B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2764/88 1988-07-19
CH276488A CH676210A5 (fr) 1988-07-19 1988-07-19

Publications (3)

Publication Number Publication Date
EP0351560A2 true EP0351560A2 (fr) 1990-01-24
EP0351560A3 EP0351560A3 (en) 1990-10-17
EP0351560B1 EP0351560B1 (fr) 1993-12-01

Family

ID=4241088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890111046 Expired - Lifetime EP0351560B1 (fr) 1988-07-19 1989-06-19 Machine à changer la forme de coupe transversale d'ébauches cylindriques, en particulier pour boîtes

Country Status (3)

Country Link
EP (1) EP0351560B1 (fr)
CH (1) CH676210A5 (fr)
DE (2) DE3828879A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011275A1 (fr) * 1990-01-26 1991-08-08 American National Can Company Procede et appareil de traitement de conteneurs
EP0671229A1 (fr) * 1994-03-11 1995-09-13 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Machine de fabrication de boîtes
WO1997021505A1 (fr) * 1995-12-12 1997-06-19 Carnaudmetalbox Plc Procede d'orientation de boites
EP1174345A1 (fr) * 2000-07-18 2002-01-23 KHS Maschinen- und Anlagenbau Aktiengesellschaft Machine pour le positionnement de bouteilles, boítes ou récipients analogues

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2146180C1 (ru) * 1994-08-10 2000-03-10 Эльпатроник АГ Способ и устройство для свертывания изделий из листового материала

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT218833B (de) * 1959-05-20 1961-12-27 Rudi Ing Lueddecke Verfahren und Vorrichtung zum Herstellen von unrunden Dosenrümpfen
CH673790A5 (fr) * 1987-07-07 1990-04-12 Elpatronic Ag
CH674165A5 (fr) * 1988-03-15 1990-05-15 Elpatronic Ag

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011275A1 (fr) * 1990-01-26 1991-08-08 American National Can Company Procede et appareil de traitement de conteneurs
EP0671229A1 (fr) * 1994-03-11 1995-09-13 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Machine de fabrication de boîtes
WO1997021505A1 (fr) * 1995-12-12 1997-06-19 Carnaudmetalbox Plc Procede d'orientation de boites
GB2320005A (en) * 1995-12-12 1998-06-10 Metal Box Plc Method of orienting cans
GB2320005B (en) * 1995-12-12 1999-08-11 Metal Box Plc Orientation of cans
EP1174345A1 (fr) * 2000-07-18 2002-01-23 KHS Maschinen- und Anlagenbau Aktiengesellschaft Machine pour le positionnement de bouteilles, boítes ou récipients analogues

Also Published As

Publication number Publication date
EP0351560A3 (en) 1990-10-17
DE58906286D1 (de) 1994-01-13
CH676210A5 (fr) 1990-12-28
EP0351560B1 (fr) 1993-12-01
DE3828879A1 (de) 1990-01-25
DE3828879C2 (fr) 1990-07-26

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