EP0351560B1 - Maschine zum Verändern der Querschnittsform gerundeter Zargen, insbesondere für Dosen - Google Patents

Maschine zum Verändern der Querschnittsform gerundeter Zargen, insbesondere für Dosen Download PDF

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Publication number
EP0351560B1
EP0351560B1 EP19890111046 EP89111046A EP0351560B1 EP 0351560 B1 EP0351560 B1 EP 0351560B1 EP 19890111046 EP19890111046 EP 19890111046 EP 89111046 A EP89111046 A EP 89111046A EP 0351560 B1 EP0351560 B1 EP 0351560B1
Authority
EP
European Patent Office
Prior art keywords
expanding
mandrel
orientation
expanding mandrel
gripper
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
EP19890111046
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0351560A2 (de
EP0351560A3 (en
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/de
Publication of EP0351560A3 publication Critical patent/EP0351560A3/de
Application granted granted Critical
Publication of EP0351560B1 publication Critical patent/EP0351560B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00Making hollow objects
    • B21D51/16Making hollow objects characterised by the use of the objects
    • B21D51/26Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2646Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged

Definitions

  • Such machines which are the subject of DE-A-3725186 (published on January 19, 1989) and DE-A-3811995 (published on September 28, 1989), have an expanding mandrel turret which can be driven in rotation about a central axis and several around this axis arranged expansion mandrels.
  • the expanding mandrel turret can carry the expanding mandrels with expanding mandrel axes arranged parallel to the central axis (DE-A-3725186) or can be designed in the manner of a star revolver, the expanding mandrel axes extending radially to the central axis (DE-A- 3811995).
  • 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.
  • JP-A-59 163 041 which is considered to be the closest prior art, has disclosed a holder for a rotating expansion device for can bodies, in which the holding and releasing of the can bodies can be controlled by means of a magnet which is displaceably guided in a frame .
  • the can bodies are transferred to the rotating spreading device via a loading conveyor and a star wheel, on which they are held by means of the magnet.
  • a conveyor rod actuated by a cam lifts the empty can body located on a holding base, segment-shaped expansion stamps being introduced into the can body.
  • a control rod is moved in such a way that a round conical part attached to it is pressed against a roller.
  • a sliding plate is pulled back as far as it corresponds to the spread diameter of the can body.
  • the segment-shaped expansion stamps are now pressed outwards in the circumferential direction, as a result of which the can body is stretched and shaped.
  • the can body with the holding base is lowered again. If the can body reaches an unloading starwheel while turning further, the magnet drops off, whereby the can body can be taken along by the unloading starwheel and transported away by means of an unloading conveyor.
  • An orientation of a longitudinal frame seam with respect to the expansion stamps is not provided in this known device.
  • 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 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.
  • the orientation device with the frame held by it can be driven in rotation by a stepper motor arranged coaxially with the expanding mandrel, a sensor being provided which interrupts the rotation of the orientation device when the specific position of the longitudinal seam of the frame is reached.
  • the feed conveyor device for feeding raw frames and a discharge conveyor for removing finished frames define an intermediate floor, which is between an orientation floor defined by the orientation devices and one of them Spreading mandrel defined spreading floor is arranged.
  • the above-mentioned levels preferably have distances from one another that rule out collisions between frames arranged in different levels, in which case it is possible to have each individual frame complete more than one full cycle, for example with the orientation turret and with the expanding turret, three quarters each Rotation, so that there is plenty of time for orienting and deforming each frame and the frames still leave the machine at short intervals.
  • 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, which also drives a central vertical shaft 30, via a variator gear 20, a chain drive 22, a cardan shaft 24 and a branching gear 26.
  • the geometrical The 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 forms a feed conveyor device with the feed conveyor 16 and which is rotatable about a vertical axis and has recesses 36 for it at regular intervals on its edge each has a frame.
  • the movement path of the frames 10 gripped by the metering wheel 34 is delimited radially outwards 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 expanding mandrel 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 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 of the common rotation of the expanding mandrel turret 40 and the orientation turret 60 indicated by an arrow C in FIGS. 1 and 2.
  • a slide-on 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 push-on 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 push-on devices 70 are assigned a common curve 76, formed by a groove, for lifting movements rising and falling parallel to the main axis A, and a common curve 78 for opening and closing movements.
  • the lower grippers 74 of all push-on 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 so 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 the usual way on the expanding mandrel 42.
  • the rotation of the revolvers 40 and 60 is not interrupted in the illustrated machine.
  • 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 by means of a cardan shaft 96 from 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 arranged approximately at right angles to them, 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 Maschine zum Verändern der Querschnittsform gerundeter Zargen, insbesondere für Dosen Expired - Lifetime EP0351560B1 (de)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=4241088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890111046 Expired - Lifetime EP0351560B1 (de) 1988-07-19 1989-06-19 Maschine zum Verändern der Querschnittsform gerundeter Zargen, insbesondere für Dosen

Country Status (3)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3149945B2 (ja) * 1990-01-26 2001-03-26 アメリカン ナショナル カン カンパニー 容器を加工するための方法および装置
DE4408150A1 (de) * 1994-03-11 1995-09-14 Krupp Maschinentechnik Maschine zum Herstellen von Dosen
GB9525391D0 (en) * 1995-12-12 1996-02-14 Metal Box Plc Orientation of cans
DE10034907A1 (de) * 2000-07-18 2002-01-31 Khs Masch & Anlagenbau Ag Maschine zum Behandeln von Flaschen, Dosen o. dgl. Behälter

Family Cites Families (4)

* 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
JPS59163041A (ja) * 1983-03-08 1984-09-14 Toyo Seikan Kaisha Ltd ロ−タリ−エキスパンダの缶胴保持装置
CH673790A5 (pl) * 1987-07-07 1990-04-12 Elpatronic Ag
CH674165A5 (pl) * 1988-03-15 1990-05-15 Elpatronic Ag

Also Published As

Publication number Publication date
CH676210A5 (pl) 1990-12-28
DE3828879C2 (pl) 1990-07-26
EP0351560A2 (de) 1990-01-24
DE3828879A1 (de) 1990-01-25
EP0351560A3 (en) 1990-10-17
DE58906286D1 (de) 1994-01-13

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