EP0368233B1 - Machine for perching leather - Google Patents

Machine for perching leather Download PDF

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Publication number
EP0368233B1
EP0368233B1 EP89120583A EP89120583A EP0368233B1 EP 0368233 B1 EP0368233 B1 EP 0368233B1 EP 89120583 A EP89120583 A EP 89120583A EP 89120583 A EP89120583 A EP 89120583A EP 0368233 B1 EP0368233 B1 EP 0368233B1
Authority
EP
European Patent Office
Prior art keywords
plate
leather
perching
pegs
counterplate
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
EP89120583A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0368233A2 (en
EP0368233A3 (en
Inventor
Giocondo Baggio
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0368233A2 publication Critical patent/EP0368233A2/en
Publication of EP0368233A3 publication Critical patent/EP0368233A3/en
Application granted granted Critical
Publication of EP0368233B1 publication Critical patent/EP0368233B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/40—Softening or making skins or leather supple, e.g. by staking, boarding, or crippling machines, by dry mills

Definitions

  • the invention concerns a perching machine for leather suited to combine the perching action with the smoothing action.
  • perching is a finishing process for leather by means of which the leather acquires characteristics of softness, or, as it is called in the specific technical lingo a good "handle”.
  • the perching process consists in running the leather to be treaded, which is held between two elastic conveyor belts, through a set of pegs which force it to alternatively enter into and exit from the openings of a grid. Thereby on various spots of the leather surface an alterated traction action is created, which is repeated at extremely short intervals, which yields to it the required characteristics of softness and "handle".
  • the DE-A 35 00 684 discloses a perching machine having two stretching plates both provided with pegs. The stretching operation is made in two direction perpendicular each other.
  • FR-A-2332943 discloses a perching machine according to the preamble of claim 1 in which the leather is treated by two plates with pegs wherein the perching action is prevalent and the smoothing action happens only when the driving rollers slow down the translation of the leather.
  • the purpose of the present invention is to develop a perching machine which will permit to obtain leather with characteristics of softness and handle comparable to those which are obtained by means of the manually operated finishing machine used in the artisan-type working processes. Not the least purpose is to provide a perching machine permitting production quantities which are acceptable for modern industrialized productions.
  • Yet another purpose of the invention is to provide a perching machine suited to combine the perching action with the smoothing action.
  • a perching machine is realized which makes it possible to obtain a degree of softness and handle of the leather, comparable with those which can be obtained by means of manually operated machines of the artisan type, while processing a production quantity of the industrial type.
  • the machine according to the invention which is indicated as a whole with 1 in Fig. 1, comprises a base supporting the perching units 3, 4, 5, 6. It will be remarked that Fig. 1 shows four perching units, but it is understood that the perching machine 1 may comprise any number of perching units. Moreover, in the description given hereafter, reference will be made only to the perching unit indicated with 3, as far as the components are concerned, but it is understood that the perching units 4, 5, 6 comprise the same components as unit 3.
  • the perching unit 3 consists of a plate with pegs 9 comprising a base-plate 8 on top of which are attached the pegs 9.
  • the horizontal plane 10 of the base-plate 8 is parallel to a drilled counterplate 11, positioned over the plate with pegs 9 and presenting a plurality of holes 12, each of which is penetrated by a peg 9.
  • the plate with pegs 9 undergoes an alternated vertical movement following direction 13 which is trasmitted to it by cam 14 driven by a motor (not represented in the drawing), which by driving it through shaft 15 causes it to rotate, for instance, in the direction indicated by arrow 16.
  • cam 14 While rotating, cam 14 goes to interfere against the lower base 17 of the base-plate 8, thereby causing it go up or down, depending on the position of its excentricity during its rotation.
  • each perching unit is provided with an articulated quadrilateral 50 comprising an upper crank 51, a lower crank 52 and a drag link 53.
  • the small end 54 of crank 52 and the small end 55 of crank 51 are aligned with each other following the vertical direction 56 and they are attached to the base 2 of the machine.
  • head 58 of the drag link is connected with the head 59 of the lower crank 52, while the head 60 of the drag-link is connected with the head 61 of the upper crank 51.
  • Fig. 2 shows, in fact, peg 30, which in the position indicated with an unbroken line is in its position of maximum penetration within hole 32, while the position represented with broken lines shows the peg during its ascending stage while it is entering hole 32.
  • the perching machine according to the invention performs on leather 20 being threated a stretching of the fibers combined with a smoothing action of its surface.
  • the lifting of peg 30,9 forces leather 20 against the edges 33 and 34 of hole 32, thereby creating a stretching action on leather 20 along stretch 71 acquiring a curve 70 and comprised between the edges 33 and 34 of hole 32.
  • the action of the articulated quadrilateral 50 is such as to cause a displacement in direction 40 of peg 30,9, which causes a smoothing effect on the surface of leather 20 and, therefore, a directional recovery of the stretched fibers.
  • the perching units are not always simultaneously in contact with leather 20, which is being treated and moves forward in direction 23, but they are in contact with it alternatively two by two.
  • the perching units which are in contact with the leather are the intermediate units 4 and 5 while the outer perching units 3 and 6 will engage the leather during the subsequent half-turn of cam 14.
  • the first purpose has been fulfilled, i.e. the realization of a perching machine suited to give leather 20, which is being treated, a high degree of softness and a "handle" which is comparable with the "handle” obtained with manually operated machines of the artisan type, which are no longer used. It has, in fact, being seen that through cam 14 and the articulated quadrilateral 50 it is possible to perform an alternated combined vertical, rotating and translating movement of the pegs 9, which very faithfully reproduces the work of the mentioned manually operated machines and which gives leather 20 under treatment the same characteristics of softness, flexibility, elasticity or more in general a good "handle".

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP89120583A 1988-11-07 1989-11-07 Machine for perching leather Expired - Lifetime EP0368233B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8885662A IT1225572B (it) 1988-11-07 1988-11-07 Procedimento di palissonatura per pelli e macchina atta a realizzare tale procedimento.
IT8566288 1988-11-07

Publications (3)

Publication Number Publication Date
EP0368233A2 EP0368233A2 (en) 1990-05-16
EP0368233A3 EP0368233A3 (en) 1990-07-04
EP0368233B1 true EP0368233B1 (en) 1994-03-30

Family

ID=11329661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120583A Expired - Lifetime EP0368233B1 (en) 1988-11-07 1989-11-07 Machine for perching leather

Country Status (4)

Country Link
EP (1) EP0368233B1 (es)
DE (1) DE68914250T2 (es)
ES (1) ES2053916T3 (es)
IT (1) IT1225572B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1236376B (it) * 1989-10-13 1993-02-25 Cartigliano Off Spa Metodo e macchina per ammorbidire e stirare prodotti laminari, partocolarmente pelli conciate.
IT1247078B (it) * 1991-03-14 1994-12-12 Cartigliano Off Spa Macchina a piastre battenti multiple per ammorbidire e stirare pelli industriali e similari.
IT1280605B1 (it) * 1995-11-06 1998-01-23 Michele Zanette Testa e macchina palissonatrice modulare, particolarmente per stirare ed ammorbidire pelli industriali e prodotti similari
IT1287338B1 (it) * 1996-09-13 1998-08-04 Antonio Polato Dispositivo per la regolazione continua della pressione di lavoro per macchine palissonatrici a piastre battenti.
ES2178157T3 (es) 1997-01-31 2002-12-16 Univ Leland Stanford Junior Tratamiento de arritmias mediante la inhibicion de una proteina quinasa multifuncional dependiente de calcio/calmodulina.
IT1308153B1 (it) * 1999-05-10 2001-11-29 Cartigliano Off Spa Macchina palissonatrice a piastre battenti.
IT1313522B1 (it) * 1999-05-27 2002-07-24 Antonio Antoniazzi Tappeto trasportatore elastico con fibre conduttrici per lo scarico dielettricita'statica e macchina palissonatrice con detto tappeto.
ITVI20010220A1 (it) * 2001-10-23 2003-04-23 Cartigliano Off Spa Metodo e linea per l'allargamento continuo di pelli ed altri prodottisimilari

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543412A1 (de) * 1975-09-29 1977-04-14 Dokoupil Jiri Verfahren zum kontinuierlichen stollen, geschmeidigmachen und zur faserlockerung von flachen materialien, wie leder, synthetischem leder, synthetischen folien u.ae., sowie vorrichtung zur ausfuehrung dieses verfahrens
GB1561759A (en) * 1975-11-26 1980-02-27 Turner Gmbh Maschf Processing of leather
DE3500684A1 (de) * 1985-01-11 1986-07-17 Wolf 8403 Bad Abbach Ciecierski Lederbearbeitungsmaschine

Also Published As

Publication number Publication date
ES2053916T3 (es) 1994-08-01
EP0368233A2 (en) 1990-05-16
EP0368233A3 (en) 1990-07-04
IT8885662A0 (it) 1988-11-07
DE68914250T2 (de) 1994-11-17
IT1225572B (it) 1990-11-22
DE68914250D1 (de) 1994-05-05

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