EP3717668B1 - Palisson amélioré - Google Patents

Palisson amélioré Download PDF

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Publication number
EP3717668B1
EP3717668B1 EP18829479.7A EP18829479A EP3717668B1 EP 3717668 B1 EP3717668 B1 EP 3717668B1 EP 18829479 A EP18829479 A EP 18829479A EP 3717668 B1 EP3717668 B1 EP 3717668B1
Authority
EP
European Patent Office
Prior art keywords
machine
beats
movable plate
control unit
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.)
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Application number
EP18829479.7A
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German (de)
English (en)
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EP3717668A1 (fr
Inventor
Antonio Polato
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
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Officine Di Cartigliano SpA
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Publication date
Application filed by Officine Di Cartigliano SpA filed Critical Officine Di Cartigliano SpA
Priority to HRP20211764TT priority Critical patent/HRP20211764T8/hr
Priority to PL18829479T priority patent/PL3717668T3/pl
Priority to RS20211411A priority patent/RS62684B1/sr
Publication of EP3717668A1 publication Critical patent/EP3717668A1/fr
Application granted granted Critical
Publication of EP3717668B1 publication Critical patent/EP3717668B1/fr
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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 present invention generally finds application in the field of tanning equipment and particularly relates to an improved staking machine for flexible sheet products.
  • Machines known as staking machines have been long known to be used in tanning factories for softening and stretching flexible sheet products such as industrial hides and similar products having opposite sides,i.e. a grain side and a flesh side.
  • these machines comprise motorized feeding means for feeding products in a predetermined direction, which consist, for instance, of a pair of mutually facing belts, with sheet products to be staked interposed therebetween.
  • These machines further comprise one or more pairs of mutually facing beating plates parallel to the longitudinal direction.
  • the plates are reciprocated to move toward and away from each other substantially perpendicular to the product feeding plane.
  • each plate has tools or pegs, which are adapted to interact with corresponding matingly shaped cavities or recesses on the opposite plate.
  • EP2049694 by the proprietor hereof, discloses a perching machine comprising at least one stationary plate and a movable plate, which are associated with means for adjusting the mutual distance between the two plates.
  • These adjustment means can adjust the staking pressure on opposite sides of the hides and, as a result, product finishing.
  • the useful leather area and softness of flexible sheet products are directly dependent on the feeding speed through the machine and the number of beats/minute of the beating plates.
  • the feeding speed of the products may be adjusted within a restricted range, which is directly associated with the product feeding speed in the line, and is proportional to throughput.
  • the number of beats is generally changed by adjusting the speed ratio between the motor to the drive shaft that imparts motion to the movable plate.
  • a further drawback of this arrangement is that it requires manual adjustment by an operator, which increases the complexity and labor-intensiveness of the adjustment steps.
  • Another drawback of this arrangement is that, for speed ratio adjustment, the operator shall manually access the mechanical moving parts, that are usually placed below the feeding means in hardly reachable positions.
  • EP0829543 and CN104746352 disclose staking machines for softening and stretching flexible sheet products as defined in the preamble of claim 1.
  • the technical problem addressed by the present invention is to provide a staking machine that affords effective and immediate adjustment of the number of beats, to promptly adapt the machine to the various types of products to be treated and the characteristics of the desired products.
  • the object of the present invention is to obviate the above drawback, by providing an improved staking machine for softening and stretching flexible sheet products that is highly efficient and relatively cost-effective.
  • a particular object of the present invention is to provide an improved staking machine of the aforementioned type that can continuously adjust the number of beats/minute of the movable plate or movable plates.
  • a further object of the present invention is to provide an improved staking machine as described hereinbefore that can reduce power consumption at startup.
  • a further object of the present invention is to provide an improved staking machine as described hereinbefore, that can considerably reduce the overall flexible sheet product processing times.
  • Another object of the present invention is to provide a machine as described hereinbefore that can easily reduce the number of beats of the plates within a wide adjustment range.
  • a further object of the present invention is to provide a machine as described hereinbefore that is highly flexible and allows adjustment of the number of beats according to the sheet product feeding speed.
  • an improved staking machine as defined in claim 1, for softening and stretching flexible sheet products, such as industrial hides and the like having opposite sides, which machine comprises motorized feeding means for conveying the products in a predetermined longitudinal direction, at least one pair of mutually facing beating plates substantially parallel to the feeding means and acting on the opposite faces of the products, where one of the plates is stationary and the other is movable.
  • the machine further comprises motor means associated with the movable plate of each pair to impart a reciprocating movement thereto with a predetermined number of beats per minute and means for adjusting the working pressure between the stationary plate and the movable plate, which selectively act on the stationary plate to change the mutual distance between the stationary plate and the movable plate.
  • the machine comprises electronic control means which act on the motor means to continuously change the number of beats per minute of the reciprocating motion of the movable plate both during initial start-up and during steady-state operation according to the type of product to be treated and the characteristics of the desired products.
  • an improved staking machine generally designated by numeral 1, for softening and stretching flexible sheet products, not shown, such as industrial hides and the like having opposite sides.
  • the staking machine 1 comprises a load-bearing structure 2 which is adapted to define an entry zone 3 and an exit zone 4 for the sheet products and motorized feeding means 5 for conveying the sheet products in a predetermined longitudinal direction L from the entry zone 3 to the exit zone 4.
  • the feeding means 5 may comprise a pair of upper and lower endless conveyor belts 6, 7, tensioned by at least one pair of end rollers 8, 8', 9, 9'.
  • the pair of conveyor belts 6, 7 may have respective substantially straight and horizontal mutually facing portions 6', 7', for retaining the sheet products introduced into the entry zone 3 of the machine 1 and feeding them toward the exit zone 4.
  • the machine 1 also comprises at least one pair of mutually facing beating plates 10, 10', substantially parallel the feeding means 5 and acting on opposite sides of the products being processed.
  • the upper plate 10 is stationary and the lower plate 10' is movable and connected to motor means 11.
  • the latter impart a reciprocating motion to the movable plate 10' for moving it toward or away from the stationary plate 10 with a predetermined number of beats/minute.
  • the stationary upper plate 10 may comprise a plurality of peg tools, not shown, whereas the movable lower plate 10' may include a plurality of matingly shaped cavities or holes, also not shown, aligned with the pegs.
  • the plates 10, 10' interact for the pegs and the holes to exert a pressure of predetermined value on the sheet products as they are being fed.
  • the tools may also be different or have a different order, with the holes formed on the stationary plate 10 and the pegs formed on the movable plate 10', without departure from the scope of the present invention.
  • a plurality of plates 10, 10', 10" and 12, 12', 12" may be also arranged in the longitudinal direction L of the sheet products, and act on the above described belts 6, 7 at their straight portions 6', 7'.
  • two sets of plates 10A, 12A may be provided, comprising a pair of stationary upper plates 10, 10", secured to the load-bearing structure 2 and one movable lower plate 10' and a pair of stationary upper plates 12, 12" and a a movable lower plate 12' respectively.
  • the motor means 11 preferably comprise a first electric motor 13, preferably a three-phase asynchronous motor, connected to the movable plate 10', 12' via a drive mechanism 14 and a crank and connecting rod system 15, 16 or the like.
  • the movable lower plate 10', 12' is mounted to the upper end 17 of a connecting rod 15, which is in turn moved by a respective crank 16 the latter being coupled to the shaft 18 of the electric motor 13 via the drive mechanism 14.
  • the drive mechanism 14 may comprise one or more dive belts 19 and the crank 16 may have a circular cam.
  • the second set of plates 12A also comprises a crank and connecting rod system 15', 16'.
  • the latter is coupled to the crank 16 of the first set of plates 10A via a further drive mechanism 20 composed of preferably toothed belts 21.
  • the second set of plates 12a is driven relative to the first set 10A and its reciprocating motion is synchronized with that of the plates 10, 10', 10" of the first set 10A.
  • At least one second three-phase asynchronous electric motor 22 independent may be provided, independent of the first motor 13 and coupled to at least one of the rollers 8, 9 for moving the belts 6, 7.
  • the machine 1 further comprises means 23 for adjusting the working pressure between the stationary plate and the movable plate, as shown in FIG. 2 .
  • the adjustment means 23 act on the stationary plate 10, 12 and change its distance from the movable plate 10', 12'.
  • the adjustment means 23 may be of well-known type, for instance as described and illustrated in the European Patent EP2049694 , by the proprietor hereof.
  • the machine 1 comprises electronic control means 24 that act on the motor means 11 of the beating plates 10, 10' to continuously change the number of beats per minute of the reciprocating motion of the movable plate 10', or the movable plates 12'.
  • control means 24 can change the number of beats both during initial start-up and during steady-state operation according to the type of product to be treated and the characteristics of the desired products.
  • the control means 24 may comprise a PLC control unit 25 operably connected to a first inverter 26 which is adapted to power the first three-phase asynchronous motor 13.
  • control means 24 may comprise a second inverter 27 which is operably connected to the PLC control unit 25 and is adapted to control the operation of the second electric motor 22 of the feeding means 5.
  • the rotation speed of the second electric motor 22 and the corresponding feeding speed of the conveyor belts 6, 7 may be changed according to the characteristics of the desired product and in combination with the number of beats of the movable plates 10', 12'.
  • control means 24 afford independent and continuous adjustment of the beating masses 10, 10', 10" and 12, 12', 12" and the feeding means 5, with no speed step changes, to effectively provide softened and stretched sheet products, without shutting down the machine 1 or alter its throughput.
  • a control algorithm 28 may be installed in the PLC control unit 25 and the latter may be programmed to control the first inverter 26 for the latter to operate at constant flow, during startup of the first electric motor 13, with a torque that is equal to the maximum torque.
  • the constant flow of the first motor 13 during startup is regulated by the first inverter 26 for frequency values of less than the nominal values of the mains frequency, equal to 50Hz.
  • the first electric motor 13 may operate with an acceleration ramp s having a predetermined duration and during which the first inverter 26 supplies the first motor 13 with time-modulated voltage and frequency.
  • the power consumption of the machine 1 may be reduced during startup, and motors with lower power ratings may be used.
  • the first motor 13 may be appropriately sized for steady-state operation, and shall not be specially sized for startup, and smaller magnetothermic switches may be installed, as current peaks are decreased.
  • the PLC control unit 25 and the first inverter 26 may be configured to allow selection of the number of beats of the movable plate 10' or the movable plates 10', 12' in a range from 200 to 900 beats/minute, preferably from 250 to 800 beats/minute.
  • sensor means 29 may be associated with the drive mechanism 14 to detect the actual number of beats of the movable plate 10' or the movable plates 10', 12' and transmit the corresponding electric signal E to the PLC control unit 25.
  • the sensor means 29 are adapted to detect the rotation of the mechanism 14 and generate the corresponding electric signal E may comprise, for instance, optical or mechanical encoders or other similar sensors.
  • the control means 24 may comprise interface means 30 that can be accessed by an operator to set the desired number of beats and the control unit 25 may be programmed to continuously compare the desired number of beats B with the electric signal E, possibly filtered by an appropriate software filter F, using the installed algorithm 28.
  • the PLC control unit 25 will be configured to send a corresponding control signal C to the first inverter 26, which controls the operation of the first motor 13, to thereby reduce current absorption during startup.
  • the staking machine 1 may comprise a switchboard 31 adapted to receive power from the mains N and operably connected to the PLC control unit 25.
  • the latter may communicate with the interface means 30, the sensor means 29, the first 26 and second inverters 27 via cables for transmitting signals 32 using the MODBUS communication protocol or the like.
  • the closed-circuit control scheme that uses the sensors 29 is illustrated in the block diagram of FIG. 6 , whereas the block diagram of FIG. 7 illustrates the control by the algorithm 28 of the control unit 25.
  • the improved staking machine fulfills the intended objects and particularly affords more effective and immediate adjustment of the number of beats as well as easy adaptation of the machine to the various types of product to be treated and the characteristics of the desired products.
  • the present invention may find application in industry, because it can be produced on an industrial scale in leather and hide processing factories.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Claims (10)

  1. Machine de piquetage (1) pour ramollir et étirer des produits en feuilles flexibles, tels que des peaux industrielles et analogues ayant des côtés opposés, ladite machine (1) comprenant:
    - des moyens d'alimentation motorisés (5) pour amener les produits dans une direction longitudinale prédéterminée (L);
    - au moins une paire de plaques de battage se faisant face (10, 10') sensiblement parallèles auxdits moyens d'alimentation (5) et agissant sur les faces opposées des produits, l'une desdites plaques (10) étant fixe et l'autre (10') étant mobile;
    - des moyens moteurs (11) associés à la plaque mobile (10') de ladite au moins une paire (10, 10') pour lui conférer un mouvement de va-et-vient avec un nombre prédéterminé de battements par minute;
    - des moyens (23) pour régler la pression de travail entre ledit plateau fixe (10) et ledit plateau mobile (10'), qui agissent sélectivement sur ledit plateau fixe (10) pour changer la distance mutuelle entre ledit plateau fixe (10) et ledit plaque mobile (10');
    caractérisé en ce qu'il comprend des moyens de commande électroniques (24) qui agissent sur lesdits moyens moteurs (11) pour changer en continu le nombre de battements par minute du mouvement de va-et-vient de ladite plaque mobile (10') à la fois pendant le démarrage initial et pendant le fonctionnement en régime permanent selon le type de produit à traiter et les caractéristiques des produits souhaités.
  2. Machine selon la revendication 1, caractérisée en ce que lesdits moyens moteurs (11) comprennent au moins un premier moteur électrique (13) relié à ladite plaque mobile (10') via un mécanisme d'entraînement (14) et un système de manivelle et de bielle (15, 16) ou similaire.
  3. Machine selon la revendication 2, caractérisée en ce que ledit au moins un premier moteur (13) est un moteur électrique asynchrone triphasé.
  4. Machine selon la revendication 3, caractérisée en ce que lesdits moyens de commande (24) comprennent une unité de commande PLC (25) qui est connectée fonctionnellement à un premier inverseur (26) adapté pour alimenter ledit premier moteur asynchrone triphasé (13).
  5. Machine selon la revendication 4, caractérisée en ce que ladite unité de commande PLC (25) et ledit premier inverseur (26) sont configurés pour permettre la sélection du nombre de battements de ladite plaque mobile (10') dans une plage de 200 battements/minute à 900 battements/minute, de préférence de 250 à 800 battements/minute.
  6. Machine selon la revendication 4, caractérisée en ce que ladite unité de commande PLC (25) est programmée pour commander ledit premier inverseur (26) pour que ce dernier fonctionne à débit constant, lors du démarrage du premier moteur électrique (13), avec un couple qui est égal au couple maximal.
  7. Machine selon la revendication 4, caractérisée en ce qu'elle comprend des moyens de détection (29) associés audit mécanisme d'entraînement (14) pour détecter le nombre réel de battements de ladite plaque mobile (10') et pour transmettre un signal électrique (E) correspondant à ladite unité de commande PLC (25).
  8. Machine selon la revendication 7, caractérisée en ce que ladite unité de commande PLC (25) comprend des moyens d'interface (30) qui sont conçus pour être accédés par un opérateur pour régler un nombre souhaité de battements (B), ladite unité de commande PLC (25) étant programmé pour comparer en continu ledit nombre souhaité de battements (B) avec ledit signal électrique (E), éventuellement filtré par un algorithme approprié (28), et envoyer un signal de commande (C) audit premier inverseur (26), pour réduire ainsi le courant absorption au démarrage.
  9. Machine selon la revendication 4, caractérisée en ce que lesdits moyens d'alimentation (5) comprennent une paire de convoyeurs à bande sans fin (6, 7) tendus par au moins une paire de rouleaux d'extrémité (8, 8'; 9, 9'), au moins un desdits rouleaux (8, 9) étant couplé à au moins un deuxième moteur électrique asynchrone triphasé (22), qui est indépendant dudit premier moteur électrique (13).
  10. Machine selon la revendication 9, caractérisée en ce que lesdits moyens de commande (24) comprennent un deuxième inverseur (27) connecté de manière opérationnelle à ladite unité de commande PLC (25) et adapté pour commander le fonctionnement dudit deuxième moteur électrique (22), pour changer en continu sa vitesse de rotation et, en conséquence, la vitesse d'alimentation desdits convoyeurs à bande (6, 7) en fonction des caractéristiques du produit souhaité.
EP18829479.7A 2017-11-30 2018-11-30 Palisson amélioré Active EP3717668B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
HRP20211764TT HRP20211764T8 (hr) 2017-11-30 2018-11-30 Poboljšani stroj za razmekšavanje
PL18829479T PL3717668T3 (pl) 2017-11-30 2018-11-30 Ulepszona międlarka
RS20211411A RS62684B1 (sr) 2017-11-30 2018-11-30 Poboljšana mašina za razmekšavanje

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT201700138185 2017-11-30
PCT/IB2018/059495 WO2019106616A1 (fr) 2017-11-30 2018-11-30 Palisson amélioré

Publications (2)

Publication Number Publication Date
EP3717668A1 EP3717668A1 (fr) 2020-10-07
EP3717668B1 true EP3717668B1 (fr) 2021-10-20

Family

ID=61581592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18829479.7A Active EP3717668B1 (fr) 2017-11-30 2018-11-30 Palisson amélioré

Country Status (10)

Country Link
EP (1) EP3717668B1 (fr)
KR (1) KR102693916B1 (fr)
CN (1) CN111406120B (fr)
ES (1) ES2898318T3 (fr)
HR (1) HRP20211764T8 (fr)
MX (1) MX2020005578A (fr)
PL (1) PL3717668T3 (fr)
PT (1) PT3717668T (fr)
RS (1) RS62684B1 (fr)
WO (1) WO2019106616A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1247078B (it) * 1991-03-14 1994-12-12 Cartigliano Off Spa Macchina a piastre battenti multiple per ammorbidire e stirare pelli industriali e similari.
KR19980014914U (ko) * 1996-09-02 1998-06-25 강기탁 1개의 전동기로 1개의 주축과 타이밍 벨트로 연동되는 1개의 종동축으로 2개의 홀 블록을 구동하는 4헤드(head) 타연기
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.
CN1920057B (zh) * 2005-08-25 2012-03-21 张亚楠 组合式振荡拉软机
CN200971364Y (zh) * 2006-10-19 2007-11-07 何隆昇 湿皮振荡拉软机
CN101603425B (zh) * 2009-07-16 2011-06-15 上海隧道工程股份有限公司 盾构刀盘驱动用变频控制装置以及控制方法
CN104746352B (zh) * 2015-04-09 2017-03-08 禾欣可乐丽超纤皮(嘉兴)有限公司 超纤合成革振荡拉软机
PL3717669T3 (pl) * 2017-11-30 2022-01-10 Officine Di Cartigliano S.P.A. Instalacja do suszenia wstępnie obrobionych giętkich wyrobów arkuszowych
CN112779622A (zh) * 2019-11-07 2021-05-11 上海凯赛生物技术股份有限公司 一种聚酰胺56工业丝及其制备方法和应用

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN111406120B (zh) 2023-06-20
ES2898318T3 (es) 2022-03-07
HRP20211764T1 (hr) 2022-02-18
PT3717668T (pt) 2021-11-23
RS62684B1 (sr) 2021-12-31
HRP20211764T8 (hr) 2022-03-04
MX2020005578A (es) 2021-01-08
EP3717668A1 (fr) 2020-10-07
WO2019106616A1 (fr) 2019-06-06
CN111406120A (zh) 2020-07-10
KR102693916B1 (ko) 2024-08-09
PL3717668T3 (pl) 2022-02-07
KR20200094159A (ko) 2020-08-06

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