EP0504579B1 - Machine with multiple beating plates for softening and stretching industrial hides and the like - Google Patents

Machine with multiple beating plates for softening and stretching industrial hides and the like Download PDF

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Publication number
EP0504579B1
EP0504579B1 EP92102147A EP92102147A EP0504579B1 EP 0504579 B1 EP0504579 B1 EP 0504579B1 EP 92102147 A EP92102147 A EP 92102147A EP 92102147 A EP92102147 A EP 92102147A EP 0504579 B1 EP0504579 B1 EP 0504579B1
Authority
EP
European Patent Office
Prior art keywords
plates
plate
machine according
movable
beating
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
EP92102147A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0504579A1 (en
Inventor
Antonio Corner
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.)
Officine Di Cartigliano SpA
Original Assignee
Officine Di Cartigliano 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 Officine Di Cartigliano SpA filed Critical Officine Di Cartigliano SpA
Publication of EP0504579A1 publication Critical patent/EP0504579A1/en
Application granted granted Critical
Publication of EP0504579B1 publication Critical patent/EP0504579B1/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
    • C14B1/26—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
    • 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 present invention relates to a machine with multiple beating plates for softening and stretching industrial hides and the like, of the type which comprises hide advancement means interposed between a plurality of upper beating plates which face an equal number of lower beating plates so as to form adjacent pairs of plates in the hide advancement direction.
  • hide advancement means interposed between a plurality of upper beating plates which face an equal number of lower beating plates so as to form adjacent pairs of plates in the hide advancement direction.
  • one of the plates is fixed and the other one is movable; the movable plate moves alternatively toward and away from the facing fixed plate by virtue of adapted motor means.
  • each plate is provided with protrusions which are adapted to cooperate with complementary recesses defined on the opposite plate.
  • the Italian patent No. 883012 in the name of the same Applicant describes a perching machine having a single pair of beating plates.
  • multiple beating plates arranged one after another in the hide advancement direction, have subsequently been used.
  • An electric motor for each individual beating plate has also been used in order to limit the power and bulk of the installed motors.
  • Machines of this type offer the advantage of considerable functionality and high productivity, but are not free from some acknowledged problems.
  • the electric motors used to actuate each beating plate are identical, they differ in rotation rate and maximum delivered power, and therefore it is not possible to ensure strictly identical oscillation frequencies for the various beating plates.
  • the supporting frame of the machine as a whole is subjected to considerable vibrations which are only partially damped by eccentric masses and vibration-damping supports. Because of the difference in oscillation frequency, the plates tend to progressively lose their synchronization until they are periodically in the same phase even if they are initially set in phase opposition. The machine is thus periodically subjected to a resonance peak accompanied by a sharp jolt and by a certain noise.
  • This resonance can cause damage to the machine's supporting structure after sometime, especially at the welded joints, with a consequent reduction in the average life and sometimes with the need for repairs and interruptions of the machine's operation.
  • a further negative consequence of this resonance is constituted by the limitation of the maximum frequency of the oscillation of the beating plates around values of approximately 550-570 beats per minute, in order to prevent dangerous vibrations in the structure of the machine.
  • EP-A-0 368 233 discloses a perching method and machine wherein the smoothing action is obtained by translation of the pegs within the stretching holes in the plane of the leather, with the purpose of improving the final softness thereof.
  • this known machine no physical interconnection is provided between each pair of perching unit and the adjacent ones with the aim of synchronizing their alternate motion.
  • a perching machine wherein the leather is periodically stretched by plates moving alternatively with a component in the plane of the leather.
  • the motor is connected by chains to eccentric cams driving synchronously the ends of a single plate to impose thereto a circular movement parallel to itself.
  • the chains serve to drive the eccentric cams of adjacent plates forcing them to oscillate in the plane of the leather with an anti-symmetric synchronous circular motion at the same distance from each other in the sense of advancement.
  • the machine is not provided with means for compensating the vibrational inertial forces acting on the movable plates.
  • the aim of the present invention is to eliminate the problems described above by providing a perching machine with multiple beating plates which has high characteristics of reliability and productivity, as well as of maximum quietness and uniformity in operation.
  • a particular object of the invention is to provide a perching machine with multiple beating plates which prevents resonance during the oscillation of the beating plates.
  • a further object of the present invention is to provide a perching machine with multiple beating plates which can use higher oscillation frequencies than previous ones without thereby causing resonance.
  • a perching machine generally designated by the reference numeral 1, comprises a supporting frame 2 which is formed by strong steel beams and supports hide advancement means constituted by a pair of conveyor belts 3 and 4 which have adjacent portions in mutual contact in order to entrain hides P to be treated.
  • Pairs of beating plates are arranged on opposite sides with respect to the adjacent portions of the belts 3 and 4.
  • each pair is constituted by an upper plate 6 and by a lower plate 7 which are arranged respectively on opposite sides with respect to the hides to be treated.
  • the first pair of plates 5' is formed by an upper plate 6' which is arranged opposite to a lower plate 7', whereas the second pair 5'' is constituted by an upper plate 6'' which faces a lower plate 7''.
  • the upper plates 6' and 6'' are hinged by means of arms 8'and 8'' to supports 9' and 9'' which are mounted on the supporting frame 2.
  • the upper plates 6' and 6'' are furthermore provided with protrusions 10' and 10'' which cooperate with complementary recesses 11' and 11'' defined in the lower plates 7' and 7''.
  • Motor means are provided for oscillating the movable plates 6' and 6'', for a selected extent and frequency, about the fulcrums 9 and 9'', so as to cause alternating approach and spacing with respect to the fixed plates 7' and 7'' in order to cause the mutual engagement and disengagement of the protrusions 10' and 10'' and of the recesses 11' and 11''.
  • the motor means can be constituted by connecting rods 12 and 12'' which connect pivots 13' and 13'' to cranks 14' and 14''. Pivots 13' and 13'' are rigidly associated with the plates 6' and 6''.
  • Cranks 14' and 14'' are rigidly associated with respective main shafts 15' and 15''.
  • the shafts are rotatably mounted on the supporting frame 2 and are rotated by respective motors M' and M'' by means of adapted transmission belts 16' and 16''.
  • respective flywheels 17' and 17'' are fixed to each main shaft 15' and 15'' and are provided with eccentric masses 18' and 18''.
  • Flywheels 17', 17'' may optionally be provided with lightening holes 19' and 19'' which are arranged so as to balance the movements of the plates and at least partially reduce the vibrations of the machine.
  • synchronization means 20 are provided which act on the motor means in order to equalize the oscillation frequency of the adjacent beating plates 6' and 6''.
  • Figure 2 illustrates a first embodiment of said synchronization means 20, which comprises a pair of toothed pulleys 21' and 21'' which are respectively keyed on the shafts 15' and 15'' and are mutually coupled by an adapted toothed belt 22. It is possible to provide a tensioning roller 23 in order to keep the toothed belt 22 constantly under tension.
  • the pulleys 21' and 21'' are chosen with an equal diameter and an equal number of teeth, so that the transmission ratio between the shafts 15' and 15'' is 1:1. It is furthermore noted that the pulleys are angularly keyed on the shafts 15' and 15'' so as to keep the cranks 14' and 14'' strictly in phase opposition.
  • the synchronization means are constituted by a transmission shaft 24 on which terminal gears 25' and 25'' are keyed; said gears mesh with gears 26' and 26'' which are rigidly associated with the shafts 15' and 15''.
  • the transmission ratio is chosen equal to 1:1, with the cranks 14' and 14'' in phase opposition.
  • the rotation frequencies of the shafts 15' and 15'' and of any other main shafts are strictly identical, whereas the cranks are orientated so as to keep the oscillations of the beating plates 6', 6'' and 6''' in phase opposition during the operation of the machine.
  • the machine according to the invention fully achieves the intended aim and objects, and in particular that it eliminates the resonance phenomena typical of previous multiple-plate machines. It has furthermore been possible to determine that the machine can operate at higher rates, with frequencies around 650 beats per minute, increasing productivity by approximately 20% without producing resonance phenomena.
  • the machine thus conceived is susceptible to numerous modifications and variations, all of which are within the scope of the inventive concept defined by the accompanying claims.
  • the transmission elements comprised in the synchronization means can be replaced with equivalent systems, such as Cardanic shafts and universal joints, or hydraulic or electronic transmissions, which are assumed to be within the scope of the claimed inventive concept.
  • a plurality of motors connected to respective main shafts it is furthermore possible to provide a single motor connected to all the main shafts by means of appropriate transmission elements.

Landscapes

  • 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)
  • Press Drives And Press Lines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Noodles (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Soil Working Implements (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Reinforced Plastic Materials (AREA)
  • Springs (AREA)
EP92102147A 1991-03-14 1992-02-09 Machine with multiple beating plates for softening and stretching industrial hides and the like Expired - Lifetime EP0504579B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI910040 1991-03-14
ITVI910040A IT1247078B (it) 1991-03-14 1991-03-14 Macchina a piastre battenti multiple per ammorbidire e stirare pelli industriali e similari.

Publications (2)

Publication Number Publication Date
EP0504579A1 EP0504579A1 (en) 1992-09-23
EP0504579B1 true EP0504579B1 (en) 1995-06-07

Family

ID=11424561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102147A Expired - Lifetime EP0504579B1 (en) 1991-03-14 1992-02-09 Machine with multiple beating plates for softening and stretching industrial hides and the like

Country Status (14)

Country Link
EP (1) EP0504579B1 (it)
JP (1) JP3124817B2 (it)
KR (1) KR100198894B1 (it)
CN (1) CN1028766C (it)
AT (1) ATE123534T1 (it)
BR (1) BR9200817A (it)
CZ (1) CZ283448B6 (it)
DE (1) DE69202793T2 (it)
ES (1) ES2073198T3 (it)
IT (1) IT1247078B (it)
MX (1) MX9201126A (it)
SK (1) SK279983B6 (it)
TW (1) TW203101B (it)
YU (1) YU48604B (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101100695B (zh) * 2007-07-14 2011-06-22 张复兴 全自动皮革揉纹机

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1267880B1 (it) * 1994-11-15 1997-02-18 Veeger Leander Linea per l'alimentazione semiautomatica di macchine allargatrici/ asciugatrici, essicatrici e palissonatrici di pelli industriali.
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.
DE10137886A1 (de) * 2001-08-02 2003-02-20 Hein Lehmann Trenn Foerder Schubkurbeltrieb
ITVI20010220A1 (it) * 2001-10-23 2003-04-23 Cartigliano Off Spa Metodo e linea per l'allargamento continuo di pelli ed altri prodottisimilari
KR101208589B1 (ko) 2012-05-15 2012-12-06 유림산업 (주) 가죽 가공용 세이밍 머신
KR101208593B1 (ko) 2012-05-31 2012-12-06 유림산업 (주) 가죽 가공용 세이밍 머신
US8776554B2 (en) * 2012-11-21 2014-07-15 Lear Corporation Method of processing leather material
CN104894301B (zh) * 2015-06-29 2017-10-03 南通思瑞机器制造有限公司 一种新型振荡拉软机
WO2019106616A1 (en) * 2017-11-30 2019-06-06 Officine Di Cartigliano S.P.A. Improved staking machine
KR101993133B1 (ko) * 2018-11-08 2019-09-30 (주)코로나 습식 피혁 스트레칭 장치
GB2613006A (en) * 2021-11-19 2023-05-24 Duraida Ltd A vehicle cover for protecting a road going vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB809179A (en) * 1956-02-18 1959-02-18 Moenus Maschf A machine for pressing, smoothing or embossing leather
YU228576A (en) * 1975-09-29 1982-05-31 Jiri Dokoupil Device for providing the bending or softening of leather
IT1225572B (it) * 1988-11-07 1990-11-22 Giocondo Baggio Procedimento di palissonatura per pelli e macchina atta a realizzare tale procedimento.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101100695B (zh) * 2007-07-14 2011-06-22 张复兴 全自动皮革揉纹机

Also Published As

Publication number Publication date
ITVI910040A0 (it) 1991-03-14
DE69202793D1 (de) 1995-07-13
JP3124817B2 (ja) 2001-01-15
KR100198894B1 (ko) 1999-06-15
CN1028766C (zh) 1995-06-07
IT1247078B (it) 1994-12-12
ATE123534T1 (de) 1995-06-15
CS75892A3 (en) 1992-10-14
BR9200817A (pt) 1992-11-17
YU48604B (sh) 1998-12-23
CN1064894A (zh) 1992-09-30
SK279983B6 (sk) 1999-06-11
MX9201126A (es) 1992-10-01
CZ283448B6 (cs) 1998-04-15
EP0504579A1 (en) 1992-09-23
ITVI910040A1 (it) 1992-09-14
KR920018230A (ko) 1992-10-21
JPH0578700A (ja) 1993-03-30
ES2073198T3 (es) 1995-08-01
DE69202793T2 (de) 1995-11-30
TW203101B (it) 1993-04-01
YU25092A (sh) 1995-10-03

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