EP0908111B1 - Machine for gluing and folding edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, with automated actuation - Google Patents

Machine for gluing and folding edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, with automated actuation Download PDF

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Publication number
EP0908111B1
EP0908111B1 EP19980117206 EP98117206A EP0908111B1 EP 0908111 B1 EP0908111 B1 EP 0908111B1 EP 19980117206 EP19980117206 EP 19980117206 EP 98117206 A EP98117206 A EP 98117206A EP 0908111 B1 EP0908111 B1 EP 0908111B1
Authority
EP
European Patent Office
Prior art keywords
folding
machine
gluing
actuation
main motor
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
EP19980117206
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0908111A2 (en
EP0908111A3 (en
Inventor
Alessandro Zorzolo
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.)
Comelz SpA
Original Assignee
Comelz SpA
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 Comelz SpA filed Critical Comelz SpA
Publication of EP0908111A2 publication Critical patent/EP0908111A2/en
Publication of EP0908111A3 publication Critical patent/EP0908111A3/en
Application granted granted Critical
Publication of EP0908111B1 publication Critical patent/EP0908111B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
    • A43D8/32—Working on edges or margins
    • A43D8/40—Working on edges or margins by folding, turning in or over, hammering

Definitions

  • the present invention relates to a machine for gluing and folding edges of flat parts in sheet form, particularly shoe upper parts made of leather or the like, with automated actuation.
  • the present invention relates to a machine for gluing and folding uppers which is capable of automatically performing any folding and gluing operation along curved and straight edges of uppers.
  • a folding machine is constituted by a surface, whereon the part whose edge is to be treated is made to slide, and by a driving shaft which is connected to a variable-speed motor, usually by means of a clutch which can be actuated by the operator.
  • the driving shaft drives various elements for conveying, with a reciprocating motion, the part to be treated with movement steps whose lengths are preset mechanically by moving stop elements or by means of step motors.
  • the elements for folding a portion of the peripheral edge of the part being treated comprise a folding foot, which cooperates with a fixed abutment, and an oscillating finger for folding the edge of the part against the folding foot.
  • Presser means are also provided for retaining the folded part and moving it forward.
  • the folding foot is usually axially hollow and the glue is fed through it onto the part of the edge to be folded; the glue is fed by means of a gear pump which is actuated mechanically in some cases and by means of servomechanisms with a DC motor or a step motor in other cases.
  • the glue is spread at the lower end of the foot in a preadjusted manner and proportionally to the rotation rate of the machine and to the length of the advancement step.
  • the machine also has a cutting blade which is actuated when the edge to be folded has an internal or concave curve in order to cut into the border of the part in order to facilitate its folding.
  • Photocells for recognizing the part being treated, dosage devices for the adhesive and other conventional complementary elements are also provided.
  • Said folding and gluing machines are provided with a main motor, various servomechanisms and a microcomputer which supervises the operation of the machine, allowing to set operating parameters chosen by the user.
  • the actuation of the various mechanical folding elements is performed with mutual coordination and through the actuation imparted by the main motor, with the drawback that it is not possible to adjust one element independently of the others.
  • the operating speed of the machine determines the actuation speed of the blade, which accordingly slows down considerably in the curved portions of the part being treated (which are generally treated at low machine speeds).
  • US-A-5,295,939 and EP-A-0,340,695 disclose a machine for folding and gluing edges of materials in sheet form, particularly leather parts of shoe uppers, equipped with independent actuation means which are synchronized with the main motor of the machine .
  • the aim of the present invention is to provide a machine for gluing and folding the edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, in which some mechanical elements are fully independent of the others in their adjustment.
  • an object of the present invention is to provide a machine for folding and gluing edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, in which the adjustments of the folding foot, of the guide, and of the folding element of the machine are closely correlated to the characteristics of the treatment to be obtained.
  • Another object of the present invention is to provide a machine for folding and gluing edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, which allows to retrieve settings of the mechanical elements which have been stored during previous treatments to provide them again in subsequent treatments.
  • Another object of the present invention is to provide a machine for folding and gluing edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, which allows to automatically vary the settings of the mechanical elements of the machine even during the process.
  • Another object of the present invention is to provide a machine for folding and gluing edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, which is highly reliable, relatively easy to provide and at low costs.
  • a machine for folding and gluing edges of materials in sheet form, particularly of leather parts of shoe uppers comprising a working surface and mechanical elements such as a foot for folding the edge of the part being treated, a guide for the abutment of the part to be treated, a folding element and a cutting blade, a main motor being provided for the actuation of said machine, a microcomputer storing parameters related to the operation of said machine, characterized in that it has independent actuation means for said blade which are synchronized with said main motor of the machine.
  • Each one of the mechanical elements of the folding and gluing machine, meant to position and process the part to be treated, is provided with independent actuation means for separate adjustment of the various mechanical elements.
  • a microcomputer (not shown), meant to store and retrieve operating parameters of the folding and gluing machine, controls the adjustment means of the mechanical elements as a function of the previously performed treatments and as a function of the adjustment parameters stored in previous working cycles.
  • the adjustments can also be varied automatically during treatment as a function of the shape and characteristics of the part being treated.
  • the adjustments of the various mechanical elements performed by the adjustment means are provided independently of each other.
  • the adjustment means are advantageously constituted by servomotors which drive eccentric elements which are connected to the mechanical elements to be adjusted by means of levers and traction elements.
  • the cutting blade is instead actuated by true actuation means, i.e., by a motor which is independent of the main motor of the machine but is synchronized therewith.
  • the reference numeral 1 designates an eccentric element the rotation of which moves the folding foot 6 in an upward direction or in a downward direction by means of a traction element 4 and a lever 5; an eccentric element 20 instead actuates the rightward or leftward movement of the folding foot 6; the reference numeral 2 designates an eccentric element the rotation of which moves the guide 8 to the left or to the right by means of a traction element 7.
  • the upward and downward movement of the guide is instead entrusted to an additional eccentric element 9 which is connected to a traction element 10.
  • An eccentric element 11 is connected to a traction element 12, which is in turn connected to another eccentric element 14; these elements adjust the folding element 13, which interacts with the folding foot 6.
  • an independent motor 19 coordinated by the microcomputer of the machine with respect to the main motor of the machine, actuates the cutting blade 15 with an oscillating motion, allowing the blade to perform a reciprocating motion.
  • An assembly constituted by a lever 17 and a traction element 18 causes the blade 15 to oscillate with respect to an alternating clockwise and counterclockwise rotation of the motor 19, which is independent of the main motor.
  • the oscillation speed of the cutter 15 depends exclusively on the dynamic characteristics of the system and is independent of the rotation rate of the machine imparted by the main motor.
  • the synchronization of the blade actuation motor with the main motor of the machine can be performed according to chosen parameters: for example, it is possible to make one turn of the driving shaft of the motor of the machine correspond to one oscillation of the blade, or it is possible to reduce the number of oscillations of the blade with respect to the rotation rate of the motor of the machine or viceversa.
  • the microcomputer allows to set a rotation rate of the main motor of the folding machine which is higher than the rate traditionally used.
  • the maximum speed of the machine is in fact usually set with reference to the maximum advancement step of the part being treated and depends on the mechanical constraints of the elements of the machine: however, when the advancement step is smaller than the maximum one allowed by design (for example at curved portions of the part to be treated), it is possible to exceed the preset maximum speed through an adjustment set by means of the microcomputer.
  • the folding and gluing machine according to the invention fully achieves the intended aim, since it allows to provide independent actuation of the blade and to automatically and individually adjust the other mechanical elements of the machine as a function of previous treatments.
  • the materials employed may be any according to requirements and to the state of the art.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP19980117206 1997-10-01 1998-09-09 Machine for gluing and folding edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, with automated actuation Expired - Lifetime EP0908111B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI972226 1997-10-01
IT002226 IT1295255B1 (it) 1997-10-01 1997-10-01 Macchina incollatrice e ripiegatrice di bordi di materiali in foglio e simili,particolarmente delle parti in pelle o simile di tomaie di

Publications (3)

Publication Number Publication Date
EP0908111A2 EP0908111A2 (en) 1999-04-14
EP0908111A3 EP0908111A3 (en) 2000-09-13
EP0908111B1 true EP0908111B1 (en) 2004-03-24

Family

ID=11377963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980117206 Expired - Lifetime EP0908111B1 (en) 1997-10-01 1998-09-09 Machine for gluing and folding edges of materials in sheet form and the like, particularly of shoe upper parts made of leather or the like, with automated actuation

Country Status (4)

Country Link
EP (1) EP0908111B1 (it)
BR (1) BR9803860A (it)
DE (1) DE69822584T2 (it)
IT (1) IT1295255B1 (it)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1217478B (it) * 1988-05-03 1990-03-22 Comelz Spa Macchina incollatrice e ripiegatrice dei bordi pepiferici di materiali in fogli e simili,operativamente asservita a programmazione elettronica dei suoi parametri funzionali
IT1251485B (it) * 1991-09-17 1995-05-15 Sagitta Off Mec Macchina perfezionata per la ripiegatura e l'incollaggio periferico dei bordi di un materiale in foglio e simili
EP0707079A1 (de) * 1994-10-11 1996-04-17 LEIBROCK MASCHINENFABRIK GmbH Vorrichtung zum Schärfen der Kanten von Lederzuschnitten

Also Published As

Publication number Publication date
ITMI972226A1 (it) 1999-04-01
DE69822584T2 (de) 2005-02-17
EP0908111A2 (en) 1999-04-14
DE69822584D1 (de) 2004-04-29
IT1295255B1 (it) 1999-05-04
BR9803860A (pt) 1999-12-07
EP0908111A3 (en) 2000-09-13

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