EP1574268A2 - Falzanordnung für Bleche - Google Patents

Falzanordnung für Bleche Download PDF

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Publication number
EP1574268A2
EP1574268A2 EP05004273A EP05004273A EP1574268A2 EP 1574268 A2 EP1574268 A2 EP 1574268A2 EP 05004273 A EP05004273 A EP 05004273A EP 05004273 A EP05004273 A EP 05004273A EP 1574268 A2 EP1574268 A2 EP 1574268A2
Authority
EP
European Patent Office
Prior art keywords
axis
folding blade
seaming
blade
rocking lever
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
EP05004273A
Other languages
English (en)
French (fr)
Other versions
EP1574268B1 (de
EP1574268A3 (de
Inventor
Marco Simioli
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.)
KGR SpA
Original Assignee
KGR Srl
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 KGR Srl filed Critical KGR Srl
Publication of EP1574268A2 publication Critical patent/EP1574268A2/de
Publication of EP1574268A3 publication Critical patent/EP1574268A3/de
Application granted granted Critical
Publication of EP1574268B1 publication Critical patent/EP1574268B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors

Definitions

  • the present invention refers to a seaming module of the type to be used for seaming sheet elements, in particular for assembling two sheet elements by drawing a fin of the edge of an element up to the edge of the other element.
  • the seaming module according to the invention has been conceived in order to carry out the known seaming method according to which an edge to be seamed, which is already approximately folded at 90° with respect to the plane of the sheet, is partially folded during a first step of pre-seaming, at an angle of the order of 45°, in the direction of the other sheet; in a second step, properly of seaming, the already partially folded edge, is completely folded, until it is applied onto the edge of the other sheet.
  • a seaming module according to the preamble of claim 1 is known from EP-A-0 724 922, in which the kinematic chain which mechanically connects the rotary shaft of the source of motion respectively to the first folding blade and to the second folding blade, comprises cams supported by the rotary shaft and respective tracing members.
  • the object of the invention is to make a seaming module of the type set forth above, whose kinematic chain can be made more economically, which is reliable and allows high production rates.
  • this object is reached by a seaming module for sheets such as claimed.
  • a seaming module 10 performs the seaming of two sheet elements W1, W2 arranged on an upper horizontal supporting surface 11 of a bed 12, which is associated or can be associated to the seaming module, by means of a first folding blade 14, or pre-seaming blade, and of a second folding blade 16, or seaming blade, which operate from above.
  • a first folding blade 14 or pre-seaming blade and of a second folding blade 16, or seaming blade, which operate from above.
  • this arrangement is not limitativa, and a seaming module according to the invention could operate on sheet members whose attitude can be different from horizontal.
  • the seaming module 10 comprises a sturdy frame, indicated 18 as a whole, which is formed besides by a base 20 and a pair of flanks 22, which enclose and support the most of its components.
  • the seaming module 10 comprises control means supported by the frame 18, which are adapted to apply to the first folding blade 14 and to the second folding blade 16 respective synchronized cyclical movements, described in the following, between their rest and working positions.
  • Such control means comprise a source of common rotary motion, in the shape of an electrical ratio-motor 24 (figures 6 and 7), and a double kinematic chain, indicated 26 as a whole.
  • the double kinematic chain 26 mechanically connects an output rotary shaft 28 of the ratio-motor 24 respectively to the first folding blade 14 and to the second folding blade 16.
  • control means comprise a driving gear wheel 30 fast to the shaft 28, with which a driven gear wheel 32 meshes, which is fast to a driven shaft 34.
  • the driving wheel 30 controls the driven wheel 32 according to a 1:1 ratio, so that the driven shaft 34 rotates at the same speed of the output shaft 28 of the ratio-motor 24.
  • the first linkage 36 comprises, in succession, a first crank 40 fast to the driven shaft 34, a first connecting rod 42 and a first rocking lever 44 pivoted about a first axis of oscillation A1.
  • An arm 46 of the lever 44 supports the first folding blade 14 through a blade holder 48, and the connecting rod 42 interconnects the first crank 40 and the other arm 50 of the lever 44.
  • the second linkage 38 comprises, in succession, a second crank 52 directly fast to the output shaft 28 of the ratio-motor 24, a second connecting rod 54 whose end opposite to the second crank 52 is articulated at 53 to a support member 53a fixed to an arm 60 of a second rocking lever 56.
  • the support member 53 supports a movable counter lock 55 provided with two opposite faces 55a and 55b having an arched surface.
  • the second folding blade 16 is articulably supported at the end of another arm of the second rocking lever 56, indicated with the reference numeral 58 and opposite to the arm 60.
  • the second rocking lever 56 is part of an assembly, indicated 62 as a whole, which comprises an oscillating head 64 pivoted about a second axis of oscillation A2, which is fixed and parallel to the first axis A1.
  • the second rocking lever 56 is also pivoted on the oscillating head 64, about a third axis A3 which is parallel to the second axis A2 and is off from the second folding blade 16 of an amount smaller than the distance of the second folding blade 16 from the second axis A2.
  • the oscillating head 64 and the frame 18 are provided with limit stops, respectively movable 66 and fixed 68, which can mutually engage in frontal bearing.
  • the movable limit stop 66 which is supported by the oscillating head 64, frontally engages the fixed limit stop 68 and prevents a further rotation of the oscillating head 64 about the second axis A2 during its angular movement towards the working position of the second blade 16.
  • Elastically yieldable means are interposed between the second rocking lever 56 and the oscillating head 64, which, as it can be better understood in the following, are adapted to allow the aforesaid further rotation of the lever 56, but this time about the third axis A3, to the working position of the second blade 16, shown in figure 5, while the oscillating head 64 is kept locked owing to the aforesaid engagement of the limit stops 66, 68.
  • these elastically yieldable means consist of a sturdy compression coil spring 70, schematically indicated by dashed lines in the figures.
  • the assembly 62 to which the second rocking lever 56 belongs, comprises also a body 72 which supports the second folding blade 16 through a blade holder 74.
  • the support body 72 is articulated to the arm 58 of the second rocking lever 56 about a fourth axis A4 parallel to the third axis A3.
  • a link rod 76 parallel to the arm 58, is articulated to the oscillating head 64, the other portion thereof being articulated to the support body 72, respectively about a fifth axis A5 and about a sixth axis A6, both parallel to the third axis A3 and to the fourth axis A4.
  • the oscillating head 64, the support body 72, the aforesaid arm 58 and the link rod 76 form therefore a four-bar linkage, indicated 78 as a whole, which is arranged in such a manner that, when the oscillating head 64 is kept locked by the engagement of the limit stops 66, 68, a rotation of the second rocking lever 56 about the third axis A3 towards the working position of the second folding blade 16 causes a movement of the second folding blade 16 which is substantially rectilinear and perpendicular to the support surface 11 of the sheet elements W1, W2.
  • the advantage of this arrangement will be clarified in the following.
  • FIG 1 a removable pin defining the axis A4 and connecting the support body 72 to the arm 58 of the second rocking lever 56, has been indicated 80.
  • a specific function of the removable pin 80 will be described in the following with reference to figure 10, in which the seat from which the pin 80 has been removed, has been indicated 80a.
  • Figure 1 corresponds to the initial condition in which the sheet elements W1, W2 to be seamed have been correctly arranged and positioned on the support surface 11 in view of the seaming.
  • the sheet element W1 has an end fin L already square folded, which is arranged on the side facing the seaming module 10.
  • Both the pre-seaming blade 14, or first folding blade, and the seaming blade 16, or second folding blade, are raised and withdrawn to respective rest positions in which they do not interfere with the laying of the sheet elements W1, W2 to be seamed on the support surface 11, and with the removal thereof from the surface 11 after seaming (from above, in the example of the figures).
  • the shaft 34 rotates with the same speed of the shaft 28, so that the first linkage 36, associated to the first blade 14, performs a number of cycles of movement wich is equal to that of the second linkage 38.
  • the first folding blade 14 has a working or press face 14a adapted to engage the square fin L and to fold it substantially at 45°.
  • the first folding blade 14 moves forward with an arched movement about the first axis A1, and its working face 14a, in its final portion of movement, approaches the fin L along a direction substantially at 45° with respect to the support surface 11 of the bed 12 (arrow F1, figure 2), in order to carry out the bending of the fin L approximately at 45° with respect to the surface 11.
  • the second linkage 38 has caused the forward movement of the second folding blade 16, as a single piece with all the assembly 62, along a portion of arched path about the second axis A2 (arrow F2), approaching the second blade 16 to the working position.
  • the arched surface 55b of the counter lock 55 in sliding engagement with the arched surface 65a of the formation 65, slides along a portion of the surface 65a, causing the counter lock 55 to approach the formation 67.
  • a second step (figure 3) the first folding blade 14 withdraw from the zone of the fin L, which has been folded at 45°, in order to make room to the second folding blade 16 which goes down towards the fin L with an active front face 16a thereof, according to the arched path still indicated by arrow F2.
  • the arched surface 55b of the counter lock 55 continues to slide along the surface 65a, raising to the space interposed between the arched surfaces 65a and 67a which go away to each other.
  • the second rocking lever 56 continues instead its rotation in the direction of arrow F3 (figure 5), this time about the third axis A3 which is now become fixed.
  • This rotation causes also a further movement of the counter lock 55 until it is carried, as a result of the sliding of its arched surfaces 55a and 55b, respectively along the corresponding arched surfaces 67a and 65a of the formations 67 and 65, in a position in which it fully covers the space interposed between the formations 65 and 67.
  • the counter lock 55 effectively prevents the pressure effort carried out by the second folding blade 16 on the fin L to cause a counter-rotation of the oscillating head 64 about the axis A2.
  • the movement of the fulcrum of the second rocking lever 56 from the second axis A2 to the third axis A3 corresponds to an increase of the mechanical advantage of the lever 56, that is to an intensification of the bending force carried out by the second blade 16 on the fin L.
  • the final working movement, that is of seaming, of the second folding blade 16, represented in the position of figure 5, is substantially rectilinear and perpendicular to the support surface 11, as indicated by arrow F4 in such a figure.
  • the second folding blade 16 acts on the fin L by its active front face 16a fully pressing the fin L, that is folding it completely on the edge of the sheet element W2.
  • the second linkage 38 brings the whole assembly 62 of the second blade 16 back, in a raised position with respect to the sheet elements W1, W2, passing through the positions shown in figures 8 and 9.
  • the counter lock 55 is removed from the space interposed between the formations 65 and 67, by sliding its arched surfaces 55a and 55b on the corresponding arched surfaces 67a and 65a of the formations 67 and 65, as a result of a traction carried out by the second connecting rod 54 of the linkage 38 on the support member 53a.
  • the first linkage 36 has caused the first blade 14 to perform a cycle of movement which has brought it back in a position corresponding to that of figure 1, in which it is ready for a new working cycle.
  • the four-bar linkage 78 arrangement allows to take advantage of a favourable opportunity.
  • the pin 80 which defines the axis A4
  • the support body 72 can be overturned about to the axis A6, in the direction of arrow F5 of figure 10, until it reaches the position in solid lines of the same figure 10.
  • the active front face 16a of the seaming blade 16 is directed upwardly and is therefore easily approachable by an operator who, by means of a tool such as a grinder, can easy perform any correction or maintenance operation of the face 16a of the blade 16 which is needed before actuating the seaming module 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Wrappers (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP05004273A 2004-03-01 2005-02-28 Falzanordnung für Bleche Not-in-force EP1574268B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20040126 2004-03-01
IT000126A ITTO20040126A1 (it) 2004-03-01 2004-03-01 Modulo di graffatura per lamiere

Publications (3)

Publication Number Publication Date
EP1574268A2 true EP1574268A2 (de) 2005-09-14
EP1574268A3 EP1574268A3 (de) 2005-12-07
EP1574268B1 EP1574268B1 (de) 2008-03-26

Family

ID=34814968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004273A Not-in-force EP1574268B1 (de) 2004-03-01 2005-02-28 Falzanordnung für Bleche

Country Status (5)

Country Link
EP (1) EP1574268B1 (de)
AT (1) ATE390225T1 (de)
BR (1) BRPI0500619A (de)
DE (1) DE602005005535T2 (de)
IT (1) ITTO20040126A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058512A (en) * 1957-02-20 1962-10-16 Continental Can Co Body blank flanging mechanism
EP0724922A1 (de) * 1995-02-02 1996-08-07 COMAU S.p.A. Falzvorrichtung zum Verbinden von gepressten Blechteilen
FR2776545A1 (fr) * 1998-03-30 1999-10-01 Peugeot Dispositif combine de presertissage et de sertissage
EP0958870A2 (de) * 1998-05-14 1999-11-24 D.V Automation Ltd. Presse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058512A (en) * 1957-02-20 1962-10-16 Continental Can Co Body blank flanging mechanism
EP0724922A1 (de) * 1995-02-02 1996-08-07 COMAU S.p.A. Falzvorrichtung zum Verbinden von gepressten Blechteilen
FR2776545A1 (fr) * 1998-03-30 1999-10-01 Peugeot Dispositif combine de presertissage et de sertissage
EP0958870A2 (de) * 1998-05-14 1999-11-24 D.V Automation Ltd. Presse

Also Published As

Publication number Publication date
EP1574268B1 (de) 2008-03-26
ITTO20040126A1 (it) 2004-06-01
BRPI0500619A (pt) 2005-10-18
EP1574268A3 (de) 2005-12-07
DE602005005535D1 (de) 2008-05-08
ATE390225T1 (de) 2008-04-15
DE602005005535T2 (de) 2009-05-07

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