EP0335301B1 - Verfahren zum Herstellen von Dosenzargen und Vorrichtung zum Durchführen des Verfahrens - Google Patents

Verfahren zum Herstellen von Dosenzargen und Vorrichtung zum Durchführen des Verfahrens Download PDF

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Publication number
EP0335301B1
EP0335301B1 EP89105372A EP89105372A EP0335301B1 EP 0335301 B1 EP0335301 B1 EP 0335301B1 EP 89105372 A EP89105372 A EP 89105372A EP 89105372 A EP89105372 A EP 89105372A EP 0335301 B1 EP0335301 B1 EP 0335301B1
Authority
EP
European Patent Office
Prior art keywords
cut blank
transporting means
blank
mandrel
bent
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
EP89105372A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0335301A3 (en
EP0335301A2 (de
Inventor
Norbert Dr.-Ing. Lentz
Harald Dipl.-Ing. Schmidt
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Fried Krupp AG Hoesch Krupp
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 Fried Krupp AG Hoesch Krupp filed Critical Fried Krupp AG Hoesch Krupp
Publication of EP0335301A2 publication Critical patent/EP0335301A2/de
Publication of EP0335301A3 publication Critical patent/EP0335301A3/de
Application granted granted Critical
Publication of EP0335301B1 publication Critical patent/EP0335301B1/de
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
    • B21D51/2676—Cans or tins having longitudinal or helical seams
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/12—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by chains or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/044—Feeding sheets or blanks involving aligning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/10—Feeding or positioning webs
    • B31B50/104—Feeding or positioning webs involving aligning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores
    • B31B50/38—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores the members being forming-tubes
    • B31B50/40—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores the members being forming-tubes acting internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores
    • B31B50/38—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores the members being forming-tubes
    • B31B50/42—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores the members being forming-tubes acting externally

Definitions

  • the operating mode between the rounding of the frames and the leading out of the catch shell or the transfer area of the round machine is alternating.
  • a high noise level is associated with this operating mode with constant braking by hard hitting and sudden driving.
  • the performance is fundamentally limited due to the constant changing of rounding and taking the cut out of the catch tray.
  • Another device for producing curved can bodies from an endless belt is known from GB-A-1 143 161.
  • the endless belt is provided at such intervals with transversely aligned scoring lines which correspond to the height of the bent can bodies.
  • recesses are punched out in the middle of the band, into which drivers of a centrally arranged driver chain extending through the entire forming station engage.
  • the otherwise mandrel of the molding station which is of cylindrical design, is provided with a corresponding longitudinal groove.
  • An external tool with a coaxial, hollow-cylindrical sliding surface for the endless belt is arranged around the shaping mandrel.
  • the outer tool initially surrounds the mandrel with a small circumferential angle with its inner or sliding surface. Seen in the direction of movement of the endless belt, the outer tool increasingly encloses the mandrel until it completely encloses it except for a recess for the connecting seam of the endless belt and a counter tool for the connecting seam.
  • the invention is based on the object of specifying a method and a device for producing can bodies with a longitudinal seam from individual, flat blanks, in which or with which the noise development can be reduced and / or the output can be increased.
  • the continuous, predominantly simultaneous transport in one direction and bending of the frame means that there is no noise-related braking and acceleration. Since a blank can only be safely centered in the flat state by lateral guides, the invention provides for a central force or frictional connection to be established between the transport means and the blank at the beginning of the bending, by means of which the pre-centered blank is continued is ensured.
  • the further lateral take-along of the blank is provided - based on the circumference of the frame to be formed - at a point on the blank which is already bent. As a result, there are no relative movements between the blank and the driver pawls.
  • the finished bent part of the blank can be supported and guided laterally at the same time as it is taken along.
  • Claim 2 thus describes with 180 ° an advantageous circumferential angle for the finished bent central region of the blank before the lateral detection.
  • the measure proposed in claim 3 to capture the blank at its rear edge over a width that is at least 1/10 of the width corresponds to the cut, the guidance of the cut is stabilized in the plane.
  • the device according to the present invention with a forearm, an outer mold, a device for guiding the edges of the can frame before seam bonding, two successive, rotating transport devices with drivers, the second transport device having two lateral transport means, and a seam connecting device for performing the Process is characterized by that the forearm is already designed as a shaped mandrel in the region of the initial bending of the blank, the circumference of which corresponds to the clear cross section of the finished can frame and that the shaped mandrel has a central recess on its underside in the longitudinal direction, that the first transport device is designed as a transport means which is located under the mandrel over a partial length of the same in its longitudinal center plane, that the drivers of the transport means extend into the recess of the mandrel, that the means of transport has elastic supports extending from below to the mandrel, that the two inner sides of a first part of the outer mold from a plane that extends over at least one cut length are gradually so far against the longitudinal center plane that they correspond to
  • a driver pawl of a means of transport can engage in the central recess arranged on the underside of the shaping mandrel, as a result of which the blank is reliably carried along by the shaping tool.
  • the central area of the blank is pressed somewhat downwards into the elastic supports of the transport means. This creates a frictional engagement that achieves good lateral stability when guiding the blank through the molding tool.
  • a plane is provided on which the blanks are centered by means of outer guide rails. Since the friction increases during further transport by the molding tool, it is further provided to equip the device with two lateral circumferential transport means which have catches and non-elastic supports with which the already bent area of the blank is laterally guided and supported.
  • the one central recess of the mandrel on its underside can be assigned further symmetrically arranged recesses, in which parts of the driver pawl can also engage.
  • the drivers of the transport means arranged in the central longitudinal plane preferably have a width of at least 1/10 of the blank width.
  • the lateral transport means are preferably arranged in a plane extending through the axis of the can frame which has been bent so far.
  • Claim 7 describes an advantageous embodiment of the mandrel.
  • the mandrel consists of individual axially parallel guide rods, the outer lines of which correspond to the clear cross-section of the finished can frame, the central recess of the mandrel in particular being formed by the space between two guide rods which have the same height as the lower layer, and the guide rods being fastened to inner supporting elements indirectly connected to a frame are. Any further lower recesses can then be formed by the space between correspondingly adjacent guide rods.
  • the upper guide rods of the mandrel can - seen in the direction of transport - start later than the lower guide rods.
  • the outer molding tool advantageously also consists, at least in its first part, of guide rods which extend over at least a cut length are arranged in one plane and then gradually upwards so far against the longitudinal center plane that the imaginary curve line enclosed by their inner lines corresponds to the lower part of the finished can frame, the guide rods being fastened to supporting elements connected to the frame.
  • the second part of the outer mold which further develops the can bodies to the final shape, can consist of guide rods and / or rollers.
  • the guide rods and the rollers of the outer mold are each assigned to a right and left upper and a lower roller guide tool, which can each be individually adjusted.
  • the rollers of the outer molding tool preferably have a concave contour which is matched to the outer contour of the curved frame.
  • the transport means arranged under the mandrel in its longitudinal center plane is designed as a double roller chain.
  • the height of the transport device can be adjusted by means of lifting elements in order to adjust the transport device arranged under the forming mandrel in its longitudinal center plane to different can diameters and to adjust the distance between the chain supports and the forming mandrel.
  • the lateral transport means are designed as single roller chains and are radial in height by means of lifting means and by sliding elements adjustable. In order to align the height of the cut edges exactly, a lower and upper skid is arranged at the outlet end of the grooved rail.
  • the device for transporting and guiding can blanks Z and for forming them into can bodies extends over a forming section F and over a guiding section in front and behind.
  • the molding section has a first and second transport device 1 and 2, a shaping mandrel 6, rod-shaped and roll-shaped outer shaping and guiding tools 24, 25, 31 to 33 and 42 to 44 and a grooved rail 38.
  • the first transport device 1 takes over the advance of the can blanks (hereinafter also only briefly: blanks) Z from a magazine stacker known per se (not shown here) and transfers it to the second approximately in the middle of the molding section F.
  • Transport device 2
  • the first transport device 1 essentially consists of a double roller chain 3 running in the central longitudinal plane M of the molds with driver pawls 4 and elastic chain supports 5 arranged between the driver pawls. To adjust this transport device 1 to different can diameters D and to adjust the distance between the chain supports 5 and the (Dependent on the can diameter) mandrel 6, the transport device 1 is adjustable in height by means of lifting elements 7.
  • the second transport device 2 consists of mirror-image same feed chain drives 8 and 9, which are arranged laterally opposite one another from the forming mandrel 6 in one plane.
  • drivers 11 and non-elastic supports 12 are fastened, which serve to feed or to support and guide the blanks Z which are already fully formed in the lower or middle region.
  • the chains 10 and their drivers 11 are adjustable to compensate for division errors and other manufacturing tolerances on mutual alignment.
  • the feed chain drives 8, 9 can be adjusted radially or horizontally for adaptation to the respective can diameter D by means of lifting elements 13 and by means of sliding elements 49.
  • the shaping mandrel 6 consists of a multiplicity of round bars 14, 15 which are attached to the lower and upper support elements 16, 17 in a circular manner, ie forming an (imaginary) radius.
  • the round bars 14, 15 have different lengths.
  • the lowest round bars 15 are the longest and are already present at the beginning of the molding section F.
  • the other round bars 14 and 15 - seen in the feed direction - are added.
  • the uppermost round rods 15 are the shortest and begin shortly before the second transport device 2.
  • the height of the mandrel 6 can be changed to a small extent and can thus be set precisely to a predeterminable can diameter D.
  • the support elements 16, 17 are fastened in a forearm profile 18 with an integrated cable and hose channel 19.
  • the forearm profile 18 is screwed onto the frame 21 via an intermediate piece 20.
  • FIG. 3 shows a section at the beginning of the molding section F.
  • the blank Z lies on bars 24, 25 of a right or left guide cage fastened to support elements 22, 23 and on the elastic chain supports 5 of the first transport device 1.
  • the rods 24, 25 are still arranged horizontally.
  • the support elements 22, 23 are connected via right and left supports 22 ', 23' and fastened to the frame 21 via these.
  • the centering and alignment of the blank Z is carried out by lateral guides 26, 27, which can be set in the distance and in their direction sensitively.
  • the blank Z is gripped by a pawl 4.
  • the pawl 4 (as 3 and 4) formed with three projections so that the blank Z is detected over a certain width. The projections of the pawl 4 partially engage between the
  • the two lateral guide baskets 22/24 and 23/25 essentially end with the first transport device 1.
  • the blank Z is finished bent in its central region over a circumference of approximately 180 °.
  • the blank now lies against the complete lower half of the mandrel 6 consisting of the rods 15.
  • the two undeformed side parts of the blank Z which still correspond to a circumferential length of about 90 ° or ( ⁇ / 4) D, are tangentially connected to the central circular area of the blank with the radius D / 2.
  • the feed of the blank Z from the second transport device 2 with the two Feed chain drives 8, 9 are taken over, their rigid supports 12 taking over the lateral guidance of the blank Z in a horizontal orientation instead of one of the guide rods.
  • FIG. 6 shows, in a section which is further away in the feed direction, along the line VI-VI in FIG. 1, a lower rod guide tool with guide rods 31 fastened to support elements 28 and two lateral upper rod guide tools with guide rods 32 or fastened to support elements 29, 30. 33 of a second part of the outer mold.
  • the guide rods 31 of the lower rod guide tool run parallel to the mandrel 6 and are set radially so that the blank Z bears against the rods 15 of the lower part of the mandrel 6.
  • the guide rods 31 - seen in the circumferential direction - are arranged offset to the rods 15 of the mandrel 6.
  • the rods 32, 33 of the upper lateral rod guide tools are converged in such a way that the end regions of the blank Z are bent with the rods 14 during further advance into the upper region of the mandrel 6.
  • the edges 34, 35 of the side parts of the blank Z dip into oppositely arranged grooves 36, 37 of a groove rail 38 which is arranged between the forearm profile 18 and the intermediate piece 20.
  • the distance between the two grooves 36, 37 decreases continuously in the feed direction until the blank Z is completely bent around the shaping mandrel 6 and has assumed a closed circular cross section with the diameter D.
  • the completely curved blank Z is outside of roller guide tools 39, 40, 41, the rigid supports 12 of the chains 10 of the feed chain drives 8, 9 and the guide grooves 36, 37 of the groove rail 38 fully enclosed (cf. the section shown in FIG. 7 just before the welding point S).
  • the rollers 42 ... 44 of the roller guide tools 39 ... 41 are designed as so-called diabolo rollers and are precisely adapted to the circular cross section of the curved blank Z, which is also referred to as the frame.
  • the rollers 42 ... 44 are individually adjustable in the radial direction, so that the edges 34, 35 of the rounded blank Z abut against one another with pressure 45.
  • a height-adjustable skid 46 or 47 is arranged below and above the grooved plane in order to align the cutting edges 34, 35 exactly in height.
  • the welding point S is located immediately behind the skids 46, 47, the welding being able to be carried out, for example, by a focused laser beam 48.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
EP89105372A 1988-03-29 1989-03-25 Verfahren zum Herstellen von Dosenzargen und Vorrichtung zum Durchführen des Verfahrens Expired - Lifetime EP0335301B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810611A DE3810611A1 (de) 1988-03-29 1988-03-29 Verfahren zum herstellen von dosenzargen und vorrichtung zum durchfuehren des verfahrens
DE3810611 1988-03-29

Publications (3)

Publication Number Publication Date
EP0335301A2 EP0335301A2 (de) 1989-10-04
EP0335301A3 EP0335301A3 (en) 1990-09-19
EP0335301B1 true EP0335301B1 (de) 1994-07-06

Family

ID=6350946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105372A Expired - Lifetime EP0335301B1 (de) 1988-03-29 1989-03-25 Verfahren zum Herstellen von Dosenzargen und Vorrichtung zum Durchführen des Verfahrens

Country Status (3)

Country Link
US (1) US5061141A (enrdf_load_stackoverflow)
EP (1) EP0335301B1 (enrdf_load_stackoverflow)
DE (1) DE3810611A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687336B1 (fr) * 1992-02-14 1996-05-15 Jammes Ind Sa Ligne de production automatisee de viroles roulees soudees.
CH686665A5 (de) * 1992-08-26 1996-05-31 Maegerle Karl Lizenz Verfahren zur Herstellung von Rohrkoerper fuer Verpackungstuben.
DE4313871C2 (de) * 1993-04-28 1999-07-22 Krupp Kunststofftechnik Gmbh Verfahren und Vorrichtung zum Herstellen von Dosenrümpfen aus kunststoffbeschichtetem Blech
DE4314462C2 (de) * 1993-05-03 2001-02-08 Krupp Kunststofftechnik Gmbh Vorrichtung zum Senkrechtstellen von Dosenzargen
EP0697926B1 (de) * 1994-03-07 2002-04-17 Elpatronic Ag Vorrichtung zum seriellen transport von blechteilen in richtung einer behandlungsstation
WO2015171512A1 (en) * 2014-05-04 2015-11-12 Belvac Production Machinery, Inc. Systems and methods for electromagnetic forming of containers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864933A (en) * 1957-02-19 1958-12-16 W F And John Barnes Company Apparatus for producing can bodies and welding side seams thereof
DE3330171A1 (de) * 1982-08-20 1984-02-23 FMI-MECFOND Aziende Meccaniche Riunite S.p.A., 80146 Napoli Anlage zum herstellen von buechsen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124872A (en) * 1964-03-17 Method and apparatus for severing a continuous
US11533A (en) * 1854-08-15 Machine foe
US1190351A (en) * 1915-08-20 1916-07-11 M J Ford Machine for lock-joining tubes.
US2177104A (en) * 1937-04-16 1939-10-24 Battelle Memorial Institute Method for manufacturing can bodies
US2432490A (en) * 1944-10-30 1947-12-09 Taylor Winfield Corp Tubular body maker and conveyor
US2923304A (en) * 1956-02-06 1960-02-02 American Can Co Apparatus for treating edge portions of can body blanks
US3139012A (en) * 1962-07-12 1964-06-30 United Shoe Machinery Corp Apparatus for forming containers
US3348510A (en) * 1965-05-19 1967-10-24 Frederick S Sillars Method of and apparatus for manufacturing tubular bodies
US3430410A (en) * 1966-11-21 1969-03-04 Raymond A Heisler Method for making eared tapered containers
FR2442100A2 (fr) * 1978-11-27 1980-06-20 Saurin Emmanuel Procede de fabrication de corps tubulaires, notamment de boites de conserves, et dispositif pour l'execution de ce procede
DE2906692C2 (de) * 1979-02-19 1985-02-21 Mannesmann AG, 4000 Düsseldorf Verfahren zur Herstellung von Schlitzrohren für eine Rohrschweißmaschine und Vorrichtung zur Durchführung des Verfahrens
CH667411A5 (de) * 1985-09-09 1988-10-14 Elpatronic Ag Zargenfuehrung an einer maschine zum stumpfschweissen von dosenzargen.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864933A (en) * 1957-02-19 1958-12-16 W F And John Barnes Company Apparatus for producing can bodies and welding side seams thereof
DE3330171A1 (de) * 1982-08-20 1984-02-23 FMI-MECFOND Aziende Meccaniche Riunite S.p.A., 80146 Napoli Anlage zum herstellen von buechsen

Also Published As

Publication number Publication date
US5061141A (en) 1991-10-29
EP0335301A3 (en) 1990-09-19
EP0335301A2 (de) 1989-10-04
DE3810611C2 (enrdf_load_stackoverflow) 1991-06-27
DE3810611A1 (de) 1989-10-19

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