EP0232499A2 - Calender for treating hides - Google Patents

Calender for treating hides Download PDF

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Publication number
EP0232499A2
EP0232499A2 EP86116814A EP86116814A EP0232499A2 EP 0232499 A2 EP0232499 A2 EP 0232499A2 EP 86116814 A EP86116814 A EP 86116814A EP 86116814 A EP86116814 A EP 86116814A EP 0232499 A2 EP0232499 A2 EP 0232499A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
skins
calender
support
endless belt
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.)
Withdrawn
Application number
EP86116814A
Other languages
German (de)
French (fr)
Other versions
EP0232499A3 (en
Inventor
Alfonso Toniato
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.)
Tb Di Toniato & C SNC
Original Assignee
Tb Di Toniato & C SNC
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 Tb Di Toniato & C SNC filed Critical Tb Di Toniato & C SNC
Publication of EP0232499A2 publication Critical patent/EP0232499A2/en
Publication of EP0232499A3 publication Critical patent/EP0232499A3/en
Withdrawn legal-status Critical Current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
    • C14B1/30—Pressing or rolling leather
    • C14B1/34—Pressing or rolling leather by rotating movement of the pressing or rolling elements

Definitions

  • the present invention relates to calenders used in the leather industry for stretching, printing or other treatment of skins.
  • calenders of the kind in question normally comprise two rotating cylinders between which each skin to be worked is caused to pass, one of these cylinders being generally associated with a transfer mat of natural or synthetic felt, suitable for allowing the successive introduction of the parts into the space between these cylinders and the assembly being arranged so that each skin has sufficiently prolonged contact with the surface of one of these cylinders to obtain the desired action.
  • the contact times vary to a considerable extent according to the different treatments to be applied to the skins and the successive phases of the same treatment, so that if it is intended to be able to carry out all the usual work, it is essential to have a large series of calenders which differ from each other by the angular amplitude of the contact area provided between the envisaged cylinder, provided for heating, and each of the skins to be treated.
  • the present invention mainly intends to remedy, by means of a calender in which the amplitude of the zone of contact of each skin with the heating cylinder is capable of being adjusted according to the particular treatment applied to the proposed skins, so that the same machine is suitable on its own for operating all the different treatments encountered in practice.
  • the grille according to the invention is defined in claim 1.
  • the machine shown comprises an endless carpet 1 of wool or synthetic felt, which is intended to form a support for the skins to be worked, which thus move along the arrow.
  • This belt 1 is carried by a mobile tension drum 2 associated with elastic means and by a transfer cylinder 4 between which is provided a guide drum 3 of the oscillating type.
  • cylinder 4 With cylinder 4 is associated a heated pressure cylinder 5 which is mounted on a support 6 capable of angularly moving around the axis of said cylinder 4. This angular displacement is effected by means of a threaded rod 7 cooperating with a control gear motor 8 fixed to the machine frame so that it can oscillate.
  • the support 6 can rotate around the axis, referenced 9, of the cylinder 4, thereby passing the heated pressure cylinder 5 from the position of FIG. 1 to that according to fig. 2, that is to say in fact at an angle of about 60 ° relative to the vertical, with the possibility of stopping at any desired intermediate position.
  • the heated cylinder 5 comes into contact with the skin to be treated at a greater or lesser angular amplitude, thus allowing very precise adjustment of the time of contact of the skin against the working cylinder. It will be observed on this point that if in the intermediate working phase, the contact time is greater than the final phase in order to allow the treatment products applied to the skins to melt and improve their anchoring in place, thereby making the skins more suitable for subsequent processes, in the final phase, the contact time must be shorter in order to avoid expulsion of the moisture contained in the skins, expulsion which is likely to be harmful to the flower of each skin.
  • the adoption of the machine according to the invention makes it possible to dispense with a series of similar machines, differing from each other only by the position of the aforementioned cylinder: a single machine is sufficient for all cases.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The heated roll (5) of the calender which is intended to be applied against the endless belt (1) stretched between the transfer roll (4) and the movable tensioning drum (2) is carried by a support (6) capable of rotating about the axis of the said roll (4) so that, by actuating the control mechanism (7-8) associated with the said support (6), it is possible to regulate the angular width of the region of contact of the skins with the roll (5). <IMAGE>

Description

La présente invention a trait aux calandres utilisées dans l'industrie du cuir pour l'étirage, impression ou autre traitement des peaux.The present invention relates to calenders used in the leather industry for stretching, printing or other treatment of skins.

On sait que les calandres du genre en question comprennent normalement deux cylindres tournants entre lesquels chaque peau à travailler est amenée à passer, l'un de ces cylindres étant généralement associé à un tapis de transfert en feutre naturel ou synthétique, propre à permettre l'introductìon successive des pièces dans l'espace compris entre ces cylindres et l'ensemble étant agencé de façon à ce que chaque peau ait un contact suffisamment prolongé avec la surface de l'un de ces cylindres pour obtenir l'action recherchée.It is known that calenders of the kind in question normally comprise two rotating cylinders between which each skin to be worked is caused to pass, one of these cylinders being generally associated with a transfer mat of natural or synthetic felt, suitable for allowing the successive introduction of the parts into the space between these cylinders and the assembly being arranged so that each skin has sufficiently prolonged contact with the surface of one of these cylinders to obtain the desired action.

En fait, les temps de contact varient dans une mesure considéra­ble selon les différents traitements à appliquer aux peaux et les phases successives d'un même traitement, de telle sorte que si l'on entend être en mesure de procéder à tous les travaux usuels, il est indispensable de disposer d'une large série de calandres qui diffèrent entre elles par l'amplitude angulaire de la zone de contact assuré entre le cylindre envisagé, prévu chauffant, et chacune des peaux à traiter.In fact, the contact times vary to a considerable extent according to the different treatments to be applied to the skins and the successive phases of the same treatment, so that if it is intended to be able to carry out all the usual work, it is essential to have a large series of calenders which differ from each other by the angular amplitude of the contact area provided between the envisaged cylinder, provided for heating, and each of the skins to be treated.

C'est à cet inconvénient qu'entend principalement remédier la présente invention et ce à l'aide d'une calandre dans laquelle l'amplitude de la zone de contact de chaque peau avec le cylindre chauffant est susceptible d'être réglée en fonction du traitement particulier appliqué aux peaux envisagées, de telle sorte qu'une même machine convient à elle seule pour opérer tous les différents traitements rencontrès en pratique.It is to this drawback that the present invention mainly intends to remedy, by means of a calender in which the amplitude of the zone of contact of each skin with the heating cylinder is capable of being adjusted according to the particular treatment applied to the proposed skins, so that the same machine is suitable on its own for operating all the different treatments encountered in practice.

Le calandre suivant l'invention est définie à la revendication 1.The grille according to the invention is defined in claim 1.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 est une vue de côté montrant de manière schématique l'agencement général d'une calandre suivant l'invention.
  • Fig. 2 reproduit fig. 1 à une autre position de réglage du cylìndre chauffant de la calandre.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is a side view schematically showing the general arrangement of a grille according to the invention.
  • Fig. 2 reproduced fig. 1 to another setting position for the radiator grille heater.

La machine représentée comprend un tapis sans fin 1 en laine ou en feutre synthétique, qui est destiné à former support pour les peaux à travailler, lesquelles se déplacent ainsi suivant la flèche. Ce tapis 1 est porté par un tambour mobile de tension 2 associé à des moyens élastiques et par un cylindre de transfert 4 entre lesquels est prévu un tambour de guidage 3 du type oscillant. Au cylindre 4 est associé un cylindre chauffé de pression 5 qui est monté sur un support 6 susceptible de se déplacer angulairement autour de l'axe dudit cylindre 4. Ce déplacement angulaire est opéré à l'aide d'une tige filetée 7 coopèrant avec un moto-réducteur de commande 8 fixé sur le bâti de la machine de manière à pouvoir osciller.The machine shown comprises an endless carpet 1 of wool or synthetic felt, which is intended to form a support for the skins to be worked, which thus move along the arrow. This belt 1 is carried by a mobile tension drum 2 associated with elastic means and by a transfer cylinder 4 between which is provided a guide drum 3 of the oscillating type. With cylinder 4 is associated a heated pressure cylinder 5 which is mounted on a support 6 capable of angularly moving around the axis of said cylinder 4. This angular displacement is effected by means of a threaded rod 7 cooperating with a control gear motor 8 fixed to the machine frame so that it can oscillate.

On conçoit dans ces conditions que le support 6 peut tourner autour de l'axe, référencé 9, du cylindre 4 en faisant ainsi passer le cylindre chauffé de pression 5 de la position de fig. 1 à celle suivant fig. 2, c'est-à-dire en fait suivant un angle d'environ 60° par rapport à la verticale, avec possibilité d'arrêt à toute position intermédiaire désirée.It is therefore conceivable that the support 6 can rotate around the axis, referenced 9, of the cylinder 4, thereby passing the heated pressure cylinder 5 from the position of FIG. 1 to that according to fig. 2, that is to say in fact at an angle of about 60 ° relative to the vertical, with the possibility of stopping at any desired intermediate position.

En fonction de sa position angulaire, le cylindre chauffé 5 vient au contact de la peau à traiter suivant une amplitude angulaire plus ou moins importante, en permettant ainsi le réglage très précis du temps de contact de la peau contre le cylindre de travail. On observera sur ce point que si dans la phase de travail intermédiaire, la durée de contact est supérieure à la phase finale afin de permettre aux produits de traitement appliqués sur les peaux de fondre et d'améliorer leur ancrage en place, en rendant ainsi les peaux plus aptes aux processus subséquents, dans la phase finale, la durée de contact doit être plus courte en vue d'éviter l'expulsion de l'humidité contenue dans les peaux, expulsion qui est de nature à être nuisible au niveau de la fleur de chaque peau.Depending on its angular position, the heated cylinder 5 comes into contact with the skin to be treated at a greater or lesser angular amplitude, thus allowing very precise adjustment of the time of contact of the skin against the working cylinder. It will be observed on this point that if in the intermediate working phase, the contact time is greater than the final phase in order to allow the treatment products applied to the skins to melt and improve their anchoring in place, thereby making the skins more suitable for subsequent processes, in the final phase, the contact time must be shorter in order to avoid expulsion of the moisture contained in the skins, expulsion which is likely to be harmful to the flower of each skin.

Outre l'avantage sus-mentionné quant au réglage très exact de la durée de contact des peaux avec le cylindre de pression 5, l'adoption de la machine suivant l'invention permet de se dispenser d'une série de machines similaires, ne différant entre elles que par la position du cylindre précité : une seule machine suffit pour tous les cas.In addition to the above-mentioned advantage as regards the very precise adjustment of the duration of contact of the skins with the pressure cylinder 5, the adoption of the machine according to the invention makes it possible to dispense with a series of similar machines, differing from each other only by the position of the aforementioned cylinder: a single machine is sufficient for all cases.

Il va de soi qu'on peut imaginer d'autres systèmes mécaniques pour le réglage de la position du cylindre 5 par rapport au cylindre 4.It goes without saying that other mechanical systems can be imagined for adjusting the position of the cylinder 5 relative to the cylinder 4.

Claims (3)

1. Calandre pour le traitement des peaux, du genre comprenant un tapis sans fin (1) qui est porté entre un tambour de tension (2) et un cylindre principal de transfert (4) et contre lequel est appliqué un cylindre chauffé de pression (5), caractérisée en ce que ce cylindre (5) est monté sur un support (6) susceptible de tourner autour de l'axe du cylindre (4) suivant un angle réglable, afin de permettre de modifier l'amplitude angulaire de la zone de contact entre les peaux à travailler et ledit cylindre (5) en fonction du travail à effectuer.1. Calender for the treatment of skins, of the type comprising an endless belt (1) which is carried between a tension drum (2) and a main transfer cylinder (4) and against which a heated pressure cylinder is applied ( 5), characterized in that this cylinder (5) is mounted on a support (6) capable of rotating around the axis of the cylinder (4) at an adjustable angle, in order to allow the angular amplitude of the area to be modified contact between the skins to work and said cylinder (5) depending on the work to be performed. 2. Calandre suivant la revendication 1, caractérisée en ce que le support (6) qui porte le cylindre de pression (5) est attelé à une tige filetée (7) coopérant avec un mécanisme de commande et de réglage (8) qui permet de modifier la position du cylindre (5) précité.2. Calender according to claim 1, characterized in that the support (6) which carries the pressure cylinder (5) is coupled to a threaded rod (7) cooperating with a control and adjustment mechanism (8) which makes it possible to modify the position of the aforementioned cylinder (5). 3. Calandre suivant l'une quelconque des revendications 1 et 2, caractérisée en ce qu'au tambour de tension (2), prévu mobile, sont associés des moyens élastiques propres à assurer la tension permanente du tapis sans fin (1) quelle que soit la position du cylindre (5) par rapport au cylindre (4).3. Calender according to any one of claims 1 and 2, characterized in that the tension drum (2), provided movable, are associated with elastic means suitable for ensuring the permanent tension of the endless belt (1) whatever or the position of the cylinder (5) relative to the cylinder (4).
EP86116814A 1985-12-09 1986-12-03 Calender for treating hides Withdrawn EP0232499A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT85622/85A IT1188040B (en) 1985-12-09 1985-12-09 CALENDER WITH VARIABLE EXTENSION OF THE CONTACT AREA FOR IRONING AND PRINTING OF THE LEATHER
IT8562285 1985-12-09

Publications (2)

Publication Number Publication Date
EP0232499A2 true EP0232499A2 (en) 1987-08-19
EP0232499A3 EP0232499A3 (en) 1989-02-22

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ID=11329147

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EP86116814A Withdrawn EP0232499A3 (en) 1985-12-09 1986-12-03 Calender for treating hides

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EP (1) EP0232499A3 (en)
IT (1) IT1188040B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20169988A1 (en) * 2016-01-14 2017-07-14 Rotomec S R L STRETCHER FOR LEATHER.
ITUB20169984A1 (en) * 2016-01-14 2017-07-14 Rotomec S R L STRETCHER FOR LEATHER.
ITUB20169978A1 (en) * 2016-01-14 2017-07-14 Rotomec S R L STRETCHER FOR LEATHER.
IT201700007062A1 (en) * 2017-01-24 2018-07-24 Rotomec S R L SKIN TREATMENT MACHINE AND SKIN TREATMENT METHOD

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1582343A (en) * 1967-10-12 1969-09-26
FR2050147A5 (en) * 1969-06-09 1971-03-26 Statni Vyzkum Gottwaldov Pressure treating flat leather

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1582343A (en) * 1967-10-12 1969-09-26
FR2050147A5 (en) * 1969-06-09 1971-03-26 Statni Vyzkum Gottwaldov Pressure treating flat leather

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20169988A1 (en) * 2016-01-14 2017-07-14 Rotomec S R L STRETCHER FOR LEATHER.
ITUB20169984A1 (en) * 2016-01-14 2017-07-14 Rotomec S R L STRETCHER FOR LEATHER.
ITUB20169978A1 (en) * 2016-01-14 2017-07-14 Rotomec S R L STRETCHER FOR LEATHER.
IT201700007062A1 (en) * 2017-01-24 2018-07-24 Rotomec S R L SKIN TREATMENT MACHINE AND SKIN TREATMENT METHOD

Also Published As

Publication number Publication date
EP0232499A3 (en) 1989-02-22
IT8585622A0 (en) 1985-12-09
IT1188040B (en) 1987-12-30

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