EP0327482A1 - Apparatus for the continuous mechanical treatment of hides in chamois-dressing and tannery - Google Patents

Apparatus for the continuous mechanical treatment of hides in chamois-dressing and tannery Download PDF

Info

Publication number
EP0327482A1
EP0327482A1 EP89450002A EP89450002A EP0327482A1 EP 0327482 A1 EP0327482 A1 EP 0327482A1 EP 89450002 A EP89450002 A EP 89450002A EP 89450002 A EP89450002 A EP 89450002A EP 0327482 A1 EP0327482 A1 EP 0327482A1
Authority
EP
European Patent Office
Prior art keywords
skin
tools
machine
cylinders
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.)
Ceased
Application number
EP89450002A
Other languages
German (de)
French (fr)
Inventor
Dominique Moulin
Jacques Rouanet
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.)
Jean Rouanet Sa Ets
Original Assignee
Jean Rouanet Sa Ets
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 Jean Rouanet Sa Ets filed Critical Jean Rouanet Sa Ets
Publication of EP0327482A1 publication Critical patent/EP0327482A1/en
Ceased legal-status Critical Current

Links

Images

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
    • C14B1/02—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
    • C14B1/04—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using slicking, scraping, or smoothing-out cylinders or blades fixed on supports, e.g. cylinders, in a plane substantially at right angles to the working surface
    • C14B1/08—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using slicking, scraping, or smoothing-out cylinders or blades fixed on supports, e.g. cylinders, in a plane substantially at right angles to the working surface in machines with flexible bands as bed supporting or counter-pressure elements
    • 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
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/04—Work-supports or other counter-pressing elements; Bed rolls or counter-pressing rolls

Definitions

  • the present invention relates to improvements to machines for the continuous mechanical work of skins in tanning and tanning and more particularly to the machine subject of patent application No. 85 14311 filed in the name of Mister MOULIN co-applicant for the present.
  • the machine which is the subject of the above-mentioned application is provided with at least one working head carrying at least one mechanical skin treatment tool, an endless band stretched between cylinders, driven in translation by rollers and having an ascending strand followed by a substantially horizontal strand constituting the means for supporting the skins and provided with drive means in relative spacing of the skin support relative to or to the working heads and to the means for driving the strip unending.
  • the drive means in relative spacing of the support of the skins relative to or to the working heads and to the drive means of the endless belt can have two different embodiments according to patent application No. 85 14311 of Mister MOULIN , while patent US-A-2,169,754 proposes yet another.
  • the drive means in relative spacing of the means for supporting the skin relative to the tools of the working heads are constituted by arms carrying the bearings of the tools, by axes of articulation of the arms and by jacks actuating in tilting around the axes the arms and therefore the working tools.
  • the tools used on this type of machine are cylindrical and have helical blades on their periphery. These tools are intended to be rotated during the work of the skin.
  • the cylinders between which the endless belt is stretched and the drive rollers of said strip placed inside the latter are mounted on the same chassis actuated in a tilting movement relative to an axis parallel to the axis of rotation of the tools.
  • BEYSTER patent US-A-2,169,754 presents a machine provided with an endless belt inside of which are mounted rollers intended to be actuated in translation towards the tools to bring the skin carried by the carpet towards the said tools.
  • pinch rollers Between these two rollers and between the tools are mounted pinch rollers between which the carpet is pinched and one of which is spring loaded to allow the passage of the skin to be treated.
  • An elastic tensioning device allows the tension of the belt to be maintained whatever the position of the movable rollers in translation.
  • contactors On the spring-mounted pinch roller are placed contactors detecting the presence of the skin on the mat and between the pinch rollers and triggering the raising or lowering of the rollers respectively when the skin is between the pinch rollers and when it is no longer there.
  • the main drawbacks of this machine lie in the means for holding the skin during work, that is to say the pinch rollers and during the passage of the skin between them.
  • the skin can adhere more strongly against the roller than against the carpet.
  • the tool placed behind the machine works a part of the skin which has already been treated by the first roller.
  • the machine in the BEYSTER patent cannot function correctly with regard to the power used in these types of machines and the means for driving the moving parts constituted by a single central motor driving the said moving parts by transmission.
  • the present invention aims to overcome all of the above-mentioned drawbacks, by proposing a machine provided with operations allowing good synchronization on the working position of the belt at each tool, ensuring the maintenance of the skin when it is widely engaged in the machine and before the start of work thereof and guaranteeing good safety for the user ensuring the positioning of the skin at the entrance to the machine.
  • At least one means for supporting the skin consisting of an endless band stretched between two upper cylinders and at least one lower cylinder.
  • At least one means for holding the skin during its mechanical work consisting of at least one rotary pressure roller arranged between the tools and at least one support roller disposed inside the strip without end between the upper cylinders and above the horizontal plane containing these.
  • the machine for the continuous mechanical work of skins in tanning and tanning with the improvements according to the invention comprises, in known manner, at least one working head 1 carrying at least one rotary tool 2 for mechanical treatment skins, at least one support means 3 for the skin to be treated, at least one means for driving said support and said skin under the working head or heads 1, at least one means 5 for holding the skin during the mechanical work of the latter and of the driving means ment in relative spacing of the support of the skin relative to or to said working heads and to or means 5 for holding said skin.
  • the machine is provided with two working heads 1 each carrying a rotary tool.
  • These tools are in a known manner cylindrical and have on their surface treatment elements such as helical blades for skinning.
  • the working heads 1 are fixed in the machine provided with the improvements according to the invention.
  • the support means 3 is constituted by an endless band 6 stretched between at least two cylinders 7.
  • the endless belt is stretched between two upper cylinders 7A arranged in the same horizontal plane and parallel to each other and at least one lower cylinder 7B.
  • Each of the upper cylinders 7A is arranged in a plane passing through their axis of rotation and through the axis of rotation of a tool 2 disposed above it.
  • the planes containing the axes of rotation of the tools 2 and the upper cylinders 7A are mutually parallel and perpendicular to the horizontal plane containing the axes of rotation of the tools 2 and to the horizontal plane containing the axes of rotation of the upper cylinders 7A.
  • the endless belt 6 is stretched between two upper cylinders 7A and two lower cylinders 7B arranged in a horizontal plane and parallel to one another.
  • the lower cylinders 7B are parallel to the upper cylinders 7A and to the tools 2.
  • the plane containing the tools 2 the plane containing the upper cylinders 7A and the plane containing the lower cylinders 7B are parallel to each other and said tools, said upper cylinders and said lower cylinders are parallel to each other compared to others.
  • the lower cylinders 7B have a spacing greater than that between the upper cylinders 7A so that the strip 6 has an inclined ascending strand 6A and an inclined descending strand 6B.
  • Said strip is driven in translation under the tools 2 and in a direction perpendicular to the axis of rotation of said tools.
  • the drive means in translation of the endless belt 6 is preferably constituted by at least one of the cylinders 7 on which the said band is stretched.
  • the cylinder or cylinders 7 are rotated by at least one engine.
  • only one of the cylinders 7 is rotated.
  • At least one of the cylinders 7 is provided on its guide bearings with a device for adjusting the tension of the endless belt 6. Said endless band therefore presents, considering its direction of advance, an ascending strand 6A and a descending strand 6B.
  • This supply means 8 preferably consists of an endless belt 9 stretched between at least two rollers 10, at least one of which is driven in rotation by a motor.
  • the treatment of the skins is carried out continuously, thus the endless belt 6 is actuated in an uninterrupted manner.
  • the supply means 8 constituted by the endless belt 9 operates intermittently and is controlled by the user. This gives the latter time to properly install the skin on the endless belt 9 without risk.
  • the translation of the endless belt 9 is such that the skin is soft born on the upper part of the ascending strand 6A of the endless belt 6 to then be supported by the latter.
  • the first tool 2 considering the direction of advance of the endless belt 6 rotates in a reverse direction of rotation relative to the direction of translation of said band while the other tool 2 rotates in the same direction as the direction of translation of the strip 6.
  • the machine In order to hold the skin under the tools 2 and on the endless support strip 6, the machine is provided with means 5 for holding the said skin.
  • These holding means 5 are constituted by at least one pressure roller 11 disposed between the tools 2 and driven in rotation and by at least one support roller 12 disposed inside the endless belt 6 between the two upper cylinders 7A .
  • rollers 11 and 12 are intended to clamp between them the endless belt 6 and the skin to be treated, while nevertheless allowing the latter to advance in the machine.
  • the rotary pressure roller or rollers 11 are parallel to the tools 2 and are fixed in position therebetween.
  • the said pressure roller (s) and the tools 2 have a common horizontal tangent on the side of the endless belt 6.
  • the machine comprises a single support roller 12 inside the endless belt 6 and which is mounted free to rotate.
  • This pressure roller 12 is preferably disposed above the horizontal plane containing the axes of rotation of the upper cylinders 7A supporting the said endless belt so that the spacing of the latter relative to or to the pressure rollers 12 and to the right of these is weaker than compared to 2 working tools to the right of these.
  • the upper cylinders 7A, the lower cylinders 7B and the support roller 12 are mounted on the same chassis 13 movable in translation relative to the tools 2 and to or from the pressure rollers 11 in a direction parallel to the two parallel planes each containing the axes of revolution of a tool 2 and an upper cylinder 7A and the support roller 12 is movable in translation relative to said common frame with the upper cylinders 7A and lower 7B.
  • the rotary drive motor of one of the cylinders 7 is fixed.
  • the support roller 12 is also mounted in rotational guide bearings placed on the frame 13.
  • the chassis 13 is mounted on the drive means in relative spacing of the endless belt 6 relative to the tools 2 and to the pressure roller (s) 11 as shown in FIG. 8.
  • these drive means in relative spacing consist of a motor 16 driving at the output of endless chains 17 arranged horizontally and on either side of the output shaft of the motor 16, by two vertical uprights 18 integral with the chassis 13 and each driven in translation by a plate-crank assembly 19 whose plate is rotated by a chain 17.
  • crank of the assembly is provided with a length adjustment in order to adjust the stroke of the A3 chassis.
  • the chassis 13 is guided in translation by slides and rails 20 formed between said frame 21 of the machine.
  • the operation of the machine is as follows: After placing the skin on the supply means 8, the user instructs said supply means to operate.
  • the endless belt 6 of the machine operates continuously and the tools 2 and the pressure rollers 11 are moved away from said endless belt in the initial position (FIG. 1).
  • a detector 22 is placed at the end of the supply means 8 and is intended to detect the passage of a skin (FIG. 2).
  • the skin is taken care of when it leaves the feeding means 8 by the upward strand 6A of the endless belt 6.
  • the detector 22 following the passage of the skin gives the order to a time delay to start.
  • the end of it controls the closing of the machine, that is to say the translation of the chassis 13 and therefore of the endless belt towards the tools 2 and the pressure rollers 11 (FIG. 4).
  • the time delay between skin detection and machine closure is a function of the speed of the endless belt and is such that closure occurs when the front end of the skin has passed past the pressure rollers. 11 ( Figure 3).
  • the chassis 13 continues to progress, which causes the relative movement relative to the support roller 12 which is for this purpose mounted on the springs 15. Chassis progression continues until the tools are in the working position.
  • the first tool 2 that is to say the one closest to the supply means 8 begins to work the skin, while the second tool 2 cannot work it because the said skin is not yet disposed under him ( Figure 4).
  • the skin driven in translation progresses under the first tool 2 and then engages by its front part not yet treated under the second tool 2.
  • a time delay operates and determines at its end the cessation of work (FIG. 5).
  • This time delay is always a function of the speed of the endless belt and is such that work is stopped when the rear end of the skin has passed beyond the first tool 2 (FIG. 6).
  • the chassis 13 begins its vertical translation downwards, thus causing the first tool 2 of the strip 6 and the second tool 2 to be separated from the skin, the latter being always clamped by the rollers 11 and 12, because the chassis 13 initially relative to the support roller 12.
  • the detector 22 can also control the stopping of the means 8 to allow the user to place another skin on it.
  • the endless belt 6 continues to function to evacuate the skin at the level of the lower end of its descending strand 6B.
  • the endless belt 6 operates continuously and another skin can be introduced into the machine before the previous skin is completely removed (Figure 7).
  • the skin leaves the fully treated machine, its front part having been by the second tool 2 and its rear part by the first.
  • the machine comprises two parallel rotary pressure rollers 11 arranged in the same horizontal plane and the support roller 12 is arranged in a vertical plane passing between the two pressure rollers 11.
  • the machine can comprise a single pressure roller 11 rotated by a motor and arranged in a vertical plane containing the support roller 12.
  • the machine provided with improvements according to the invention is also provided with the arrangements provided for in application 85 14311 of Mr. MOULIN, namely devices for sharpening the blades of tools 2, systems for taking up the wear of said tools, a assembly ensuring the synchronization of the various motors each actuating an element of the machine, net assemblies tape cleaning, recovery and disposal of waste.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Massaging Devices (AREA)

Abstract

The apparatus equipped with improvements according to the invention is essentially characterised in that the upper (7A) and lower (7B) cylinders and the support roller (12) supporting the endless belt (6) are mounted on one and the same chassis (13) which is translationally mobile in relation to the tools (2) and to the pressure roller(s) (11), and in that the support roller (12) is translationally mobile relative to said chassis (13) common to the upper (7A) and lower (7B) cylinders. <IMAGE>

Description

La présente invention à pour objet des perfectionnements aux ma­chines pour le travail mécanique en continu des peaux en mégisse­rie et en tannerie et plus particulièrement à la machine objet de la demande de brevet n° 85 14311 déposée au nom de Monsieur MOULIN co-demandeur de la présente.The present invention relates to improvements to machines for the continuous mechanical work of skins in tanning and tanning and more particularly to the machine subject of patent application No. 85 14311 filed in the name of Mister MOULIN co-applicant for the present.

La machine objet de la demande sus-référencée est dotée d'au moins une tête de travail portant au moins un outil de traite­ment mécanique de la peau, d'une bande sans fin, tendue entre des cylindres, entrainée en translation par des rouleaux et présen­tant un brin ascendant suivi d'un brin sensiblement horizontal constituant le moyen de support des peaux et pourvue de moyens d'entrainement en écartement relatif du support de la peau par rapport à ou aux têtes de travail et aux moyens d'entrainement de la bande sans fin.The machine which is the subject of the above-mentioned application is provided with at least one working head carrying at least one mechanical skin treatment tool, an endless band stretched between cylinders, driven in translation by rollers and having an ascending strand followed by a substantially horizontal strand constituting the means for supporting the skins and provided with drive means in relative spacing of the skin support relative to or to the working heads and to the means for driving the strip unending.

Ces caractéristiques sont également connues dans le brevet US-A-2 169 754.These characteristics are also known in US-A-2,169,754.

Les moyens d'entrainement en écartement relatif du support des peaux par rapport à ou aux têtes de travail et aux moyens d'entrainement de la bande sans fin peuvent présenter deux formes de réalisation différentes selon la demande de brevet n° 85 14311 de Monsieur MOULIN, tandis que le brevet US-A-2 169 754 en propo­se encore une autre.The drive means in relative spacing of the support of the skins relative to or to the working heads and to the drive means of the endless belt can have two different embodiments according to patent application No. 85 14311 of Mister MOULIN , while patent US-A-2,169,754 proposes yet another.

Suite à l'utilisation de la machine de Monsieur MOULIN présentant l'une ou l'autre forme de réalisation des moyens d'entrainement en écartement relatif et suite à l'étude et à l'analyse fonction­nelle de la machine objet du brevet américain sus-cité, il a été révélé des inconvénients de fonctionnement entrainant des résul­tats médiocres sur la qualité du travail effectué sur les peaux.Following the use of Mr. MOULIN's machine presenting one or the other embodiment of the training means in relative spacing and following the study and the functional analysis of the machine object of the US patent sus -cited, it was revealed operating drawbacks leading to poor results on the quality of the work performed on the skins.

En effet, selon la première forme de réalisation de la machine de Monsieur MOULIN, les moyens d'entrainement en écartement relatif du moyen de support de la peau par rapport aux outils des têtes de travail sont constitués par des bras portant les paliers des outils, par des axes d'articulation des bras et par des verins actionnant en basculement autour des axes les bras et donc les outils de travail.In fact, according to the first embodiment of Mister MOULIN's machine, the drive means in relative spacing of the means for supporting the skin relative to the tools of the working heads are constituted by arms carrying the bearings of the tools, by axes of articulation of the arms and by jacks actuating in tilting around the axes the arms and therefore the working tools.

Les outils utilisés sur ce type de machine sont cylindriques et comportent sur leur périphérie des lames hélicoïdales.
Ces outils sont destinés à être entrainés en rotation lors du travail de la peau.The tools used on this type of machine are cylindrical and have helical blades on their periphery.
These tools are intended to be rotated during the work of the skin.

Il s'avère lorsque les dits outils sont montés sur des bras, leur rotation rapide entraine de très fortes vibrations sur la machi­ne.It turns out when the said tools are mounted on arms, their rapid rotation causes very strong vibrations on the machine.

De plus, le montage des outils sur ces bras pose d'une part, des problèmes de parallélisme entre les deux outils et entre chacun d'entre eux et le moyen de support et d'autre part des phénomènes de flexion sur les bras.In addition, the mounting of the tools on these arms poses on the one hand, problems of parallelism between the two tools and between each of them and the support means and on the other hand bending phenomena on the arms.

L'ensemble de ces inconvénients entrainait un travail irrégulier de la peau et des déchirements de celle-ci.All of these drawbacks resulted in irregular working of the skin and tearing of the latter.

Selon la seconde forme de réalisation de la machine du brevet MOULIN les cylindres entre lesquels est tendue la bande sans fin et les rouleaux d'entrainement de la dite bande placés à l'inté­rieur de celle-ci sont montés sur un même châssis actionné suivant un mouvement de basculement par rapport à un axe parallè­le à l'axe de rotation des outils.According to the second embodiment of the machine of the MOULIN patent, the cylinders between which the endless belt is stretched and the drive rollers of said strip placed inside the latter are mounted on the same chassis actuated in a tilting movement relative to an axis parallel to the axis of rotation of the tools.

Cette seconde forme de réalisation présentant des outils rotatifs fixe n'a pas non plus donné satisfaction.This second embodiment with fixed rotary tools was not satisfactory either.

En effet, lors de la mise en position de travail, c'est-à-dire du mouvement de basculement de la bande sans fin vers les outils de travail, il s'est avéré un décalage dans le positionnement de la bande sans fin par rapport aux outils de travail et par rapport aux rouleaux d'entrainement.
Ce décalage pouvait provoquer le travail de la peau avant son maintien et donc sa sortie de la machine, ainsi qu'une différence entre le traitement réalisé par chaque outil.Indeed, during the putting into working position, that is to say of the tilting movement of the endless belt towards the working tools, it turned out to be a shift in the positioning of the endless belt by in relation to working tools and in relation to the drive rollers.
This shift could cause the skin to work before it was held and therefore left the machine, as well as a difference between the treatment performed by each tool.

Le brevet US-A-2 169 754 de BEYSTER présente une machine dotée d'un tapis sans fin à l'intérieur duquel sont montés des rouleaux destinés à être actionnés en translation vers les outils pour amener la peau portée par le tapis vers les dits outils.BEYSTER patent US-A-2,169,754 presents a machine provided with an endless belt inside of which are mounted rollers intended to be actuated in translation towards the tools to bring the skin carried by the carpet towards the said tools.

Entre ces deux rouleaux et entre les outils sont montés des rou­leaux de pincement entre lesquels est pincé le tapis et dont un est monté sur ressort pour permettre le passage de la peau à traiter.
Un dispositif de tension élastique permet de maintenir la tension du tapis quelle que soit la position des rouleaux mobiles en translation.
Sur le rouleau de pincement monté sur ressort sont placés des contacteurs détectant la présence de la peau sur le tapis et entre les rouleaux de pincement et déclenchant la montée ou la descente des rouleaux respectivement lorsque la peau est entre les rouleaux de pincement et lorsqu'elle ne s'y trouve plus.Between these two rollers and between the tools are mounted pinch rollers between which the carpet is pinched and one of which is spring loaded to allow the passage of the skin to be treated.
An elastic tensioning device allows the tension of the belt to be maintained whatever the position of the movable rollers in translation.
On the spring-mounted pinch roller are placed contactors detecting the presence of the skin on the mat and between the pinch rollers and triggering the raising or lowering of the rollers respectively when the skin is between the pinch rollers and when it is no longer there.

Les principaux inconvénients de cette machine résident sur les moyens de maintien de la peau lors du travail, c'est-à-dire les rouleaux de pincement et lors du passage de la peau entre ceux-­ci.The main drawbacks of this machine lie in the means for holding the skin during work, that is to say the pinch rollers and during the passage of the skin between them.

Avec cette machine, il est nécessaire que la peau soit parfaite­ment mise en place sur le tapis pour qu'elle ne comporte pas de plis.
En effet, lors du passage entre les rouleaux de pincement, le pli peut provoquer le déclenchement des contacteurs et donc le travail des outils alors que seulement un bord de la peau se trouve maintenu.With this machine, it is necessary that the skin is perfectly placed on the carpet so that it does not have folds.
Indeed, during the passage between the pinch rollers, the fold can cause the tripping of the contactors and therefore the work of the tools while only one edge of the skin is maintained.

Ceci a donc pour conséquence le retrait de la peau de la machine par la rotation de l'outil.
Il peut en être de même lorsque deux extrémités de la peau se trouvent entre les rouleaux.This therefore results in the removal of the skin from the machine by the rotation of the tool.
It can be the same when two ends of the skin are between the rollers.

Un des inconvénients de cette machine est donc de faire débuter le travail alors que la peau est à peine maintenue.
Un autre inconvénient de cette machine est le risque d'enroule­ment de la peau autour du rouleau de pincement supérieur.One of the drawbacks of this machine is therefore to start work while the skin is barely maintained.
Another disadvantage of this machine is the risk of wrapping the skin around the upper pinch roller.

En effet, la peau peut adhérer plus fortement contre le rouleau que contre le tapis.Indeed, the skin can adhere more strongly against the roller than against the carpet.

D'autre part, l'outil placé en arrière de la machine travaille une partie de la peau qui a déjà été traitée par le premier rou­leau.On the other hand, the tool placed behind the machine works a part of the skin which has already been treated by the first roller.

De plus, l'inconvénient existant pour le début du travail existe également pour la fin du travail à savoir que l'outil continue à travailler alors que la peau est à peine tenue par son extrémité entre les rouleaux de pincement.In addition, the disadvantage existing for the start of work also exists for the end of work, namely that the tool continues to work while the skin is barely held by its end between the pinch rollers.

La machine du brevet BEYSTER ne peut fonctionner correctement en regard de la puissance mise en oeuvre dans ces types de machines et le moyen d'entrainement des parties mobiles constitué par un seul moteur central entrainant par transmission les dites parties mobiles.The machine in the BEYSTER patent cannot function correctly with regard to the power used in these types of machines and the means for driving the moving parts constituted by a single central motor driving the said moving parts by transmission.

Selon encore un autre inconvénient présent dans la machine du brevet US-A6 2 169 754 le moyen d'alimentation en peau de la machine n'offre pas une sécurité suffisante pour l'utilisateur.According to yet another drawback present in the machine of patent US Pat. No. 2,169,754, the means for supplying the skin with the machine does not offer sufficient security for the user.

Ces machines étant utilisées en continu, l'utilisateur doit pen­dant le traitement d'une peau, préparer la mise en place d'une autre peau sur le même tapis mobile.
Selon l'état de la peau cette opération peut s'avérer longue et le traitement de celle-ci peut commencer alors que l'utilisateur n'a pas fini sa mise en place et peut être tenté de le faire en courant de gros risques par la présence des outils de travail rotatifs.These machines being used continuously, the user must during the treatment of a skin, prepare the installation of another skin on the same moving mat.
Depending on the condition of the skin, this operation may prove to be long and the treatment thereof may begin when the user has not finished putting it on and may be tempted to do so by running great risks through the presence of rotary working tools.

La présente invention vise à pallier à l'ensemble des inconvé­nients ci-dessus énoncés, en proposant une machine dotée de per­ fectionnements permettant une bonne synchronisation sur la mise en position de travail du tapis au niveau de chaque outil, assu­rant le maintien de la peau lorsque celle-ci est largement enga­gée dans la machine et avant le commencement du travail de cette dernière et garantissant une bonne sécurité pour l'utilisateur assurant la mise en place de la peau à l'entrée de la machine.The present invention aims to overcome all of the above-mentioned drawbacks, by proposing a machine provided with operations allowing good synchronization on the working position of the belt at each tool, ensuring the maintenance of the skin when it is widely engaged in the machine and before the start of work thereof and guaranteeing good safety for the user ensuring the positioning of the skin at the entrance to the machine.

A cet effet, la machine dotée de perfectionnements selon l'inven­tion comporte :
- au moins une tête de travail portant au moins un outil.
- au moins un moyen de support de la peau constitué d'une bande sans fin tendue entre deux cylindres supérieurs et au moins un cylindre inférieur.
- au moins un moyen d'entrainement du moyen de support et de la peau sous les têtes de travail.
- au moins un moyen de maintien de la peau lors du travail méca­nique de celle-ci constitué d'au moins un rouleau de pression rotatif disposé entre les outils et d'au moins un rouleau de soutien disposé à l'intérieur de la bande sans fin entre les cylindres supérieurs et au dessus du plan horizontal contenant ces derniers.
- et des moyens d'entrainement en écartement relatif du support de la peau par rapport à ou aux moyens de maintien de la dite peau et se caractérise en ce que les cylindres supérieurs, les cylindres inférieurs, le rouleau de soutien supportant la bande sans fin sont montés sur un même châssis mobile en transla­tion par rapport aux outils et à ou aux rouleaux de pression dans un sens parallèle aux deux plans parallèles contenant chacun les axes de révolution d'un outil et d'un cylindre supé­ rieur et en ce que le rouleau de soutien est mobile en transla­tion relativement au dit châssis commun aux cylindres supé­rieurs et inférieurs afin que le maintien de la peau soit assuré avant le début du travail de celle-ci par les outils et que le relâchement de la dite peau par les moyens de maintien soit réalisé après la fin du travail de la dite peau par les dits outils.To this end, the machine provided with improvements according to the invention comprises:
- at least one work head carrying at least one tool.
- At least one means for supporting the skin consisting of an endless band stretched between two upper cylinders and at least one lower cylinder.
- At least one means for driving the support means and the skin under the working heads.
- At least one means for holding the skin during its mechanical work, consisting of at least one rotary pressure roller arranged between the tools and at least one support roller disposed inside the strip without end between the upper cylinders and above the horizontal plane containing these.
- And drive means in relative spacing of the skin support relative to or means for holding said skin and is characterized in that the upper cylinders, the lower cylinders, the support roller supporting the endless belt are mounted on the same chassis movable in translation relative to the tools and to the pressure roller (s) in a direction parallel to the two parallel planes each containing the axes of revolution of a tool and of a cylinder laughing and in that the support roller is movable in translation relative to said frame common to the upper and lower cylinders so that the maintenance of the skin is ensured before the start of work thereof by the tools and that the relaxation of the said skin by the holding means is carried out after the end of the work of said skin by said tools.

D'autres avantages et caractéristiques apparaitront dans la des­cription d'une forme préférentielle de réalisation selon l'in­vention illustrée aux dessins annexés donnés à titre d'exemple nullement limitatif et en lesquels :

  • - les figures 1 à 7 représentent schématiquement les étapes du fonctionnement de la machine dotée des perfectionnements selon l'invention.
  • - la figure 8 est une vue schématique de face de la machine et plus particulièrement des moyens d'entrainement en écartement relatif.
Other advantages and characteristics will appear in the description of a preferred embodiment according to the invention illustrated in the attached drawings given by way of non-limiting example and in which:
  • - Figures 1 to 7 schematically represent the stages of operation of the machine with the improvements according to the invention.
  • - Figure 8 is a schematic front view of the machine and more particularly of the relative spacing drive means.

Telle que réprésentée aux figures jointes la machine pour le tra­vail mécanique en continu des peaux en mégisserie et en tannerie dotée des perfectionnements selon l'invention comporte de façon connue, au moins une tête de travail 1 portant au moins un outil 2 rotatif de traitement mécanique des peaux, au moins un moyen de support 3 de la peau à traiter, au moins un moyen d'en­trainement du dit support et de la dite peau sous la ou les têtes de travail 1, au moins un moyen de maintien 5 de la peau lors du travail mécanique de celle-ci et des moyens d'entraine­ ment en écartement relatif du support de la peau par rapport à ou aux dites têtes de travail et à ou aux moyens de maintien 5 de la dite peau.As shown in the attached figures, the machine for the continuous mechanical work of skins in tanning and tanning with the improvements according to the invention comprises, in known manner, at least one working head 1 carrying at least one rotary tool 2 for mechanical treatment skins, at least one support means 3 for the skin to be treated, at least one means for driving said support and said skin under the working head or heads 1, at least one means 5 for holding the skin during the mechanical work of the latter and of the driving means ment in relative spacing of the support of the skin relative to or to said working heads and to or means 5 for holding said skin.

De préférence, la machine est dotée de deux têtes de travail 1 portant chacune un outil rotatif.Preferably, the machine is provided with two working heads 1 each carrying a rotary tool.

Ces outils sont de façon connue cylindriques et comportent sur leur surface des éléments de traitement tels que des lames héli­coïdales pour l'écharnage.These tools are in a known manner cylindrical and have on their surface treatment elements such as helical blades for skinning.

Ces outils sont disposés dans un même plan horizontal et sont parallèles entre eux.
La rotation des dits outils est inverse de l'un à l'autre et cha­cun est entrainé par son propre moteur.These tools are arranged in the same horizontal plane and are parallel to each other.
The rotation of said tools is reverse from one to the other and each is driven by its own motor.

Les têtes de travail 1 sont fixées dans la machine dotée des perfectionnements selon l'invention.The working heads 1 are fixed in the machine provided with the improvements according to the invention.

Comme connue de la demande de brevet 85 14311 de Monsieur MOULIN le moyen de support 3 est constitué par une bande sans fin 6 ten­due entre au moins deux cylindres 7.As known from patent application 85 14311 by Monsieur MOULIN, the support means 3 is constituted by an endless band 6 stretched between at least two cylinders 7.

Selon les perfectionnements la bande sans fin est tendue entre deux cylindres supérieurs 7A disposés dans un même plan hori­zontal et parallèles entre eux et au moins un cylindre inférieur 7B.
Chacun des cylindres supérieurs 7A est disposé dans un plan pas­sant par leur axe de rotation et par l'axe de rotation d'un outil 2 disposé au dessus de lui.According to the improvements, the endless belt is stretched between two upper cylinders 7A arranged in the same horizontal plane and parallel to each other and at least one lower cylinder 7B.
Each of the upper cylinders 7A is arranged in a plane passing through their axis of rotation and through the axis of rotation of a tool 2 disposed above it.

Les plans contenant les axes de rotation des outils 2 et des cylindres supérieurs 7A sont parallèles entre eux et perpendicu­laires au plan horizontal contenant les axes de rotation des outils 2 et au plan horizontal contenant les axes de rotation des cylindres supérieurs 7A.The planes containing the axes of rotation of the tools 2 and the upper cylinders 7A are mutually parallel and perpendicular to the horizontal plane containing the axes of rotation of the tools 2 and to the horizontal plane containing the axes of rotation of the upper cylinders 7A.

Préférentiellement, la bande sans fin 6 est tendue entre deux cylindres supérieurs 7A et deux cylindres inférieurs 7B disposés dans un plan horizontal et parallèlement l'un à l'autre.
Les cylindres inférieurs 7B sont parallèles aux cylindres supé­rieurs 7A et aux outils 2.Preferably, the endless belt 6 is stretched between two upper cylinders 7A and two lower cylinders 7B arranged in a horizontal plane and parallel to one another.
The lower cylinders 7B are parallel to the upper cylinders 7A and to the tools 2.

Ainsi le plan contenant les outils 2, le plan contenant les cylindres supérieurs 7A et le plan contenant les cylindres infé­rieurs 7B sont parallèles l'un à l'autre et les dits outils, les dits cylindres supérieurs et les dits cylindres inférieurs sont parallèles les uns par rapport aux autres.Thus the plane containing the tools 2, the plane containing the upper cylinders 7A and the plane containing the lower cylinders 7B are parallel to each other and said tools, said upper cylinders and said lower cylinders are parallel to each other compared to others.

Préférentiellement, les cylindres inférieurs 7B présentent un écartement supérieur à celui entre les cylindres supérieurs 7A afin que la bande 6 présente un brin ascendant incliné 6A et un brin descendant incliné 6B.Preferably, the lower cylinders 7B have a spacing greater than that between the upper cylinders 7A so that the strip 6 has an inclined ascending strand 6A and an inclined descending strand 6B.

La dite bande est entrainée en translation sous les outils 2 et dans un sens perpendiculaire à l'axe de rotation des dits outils.Said strip is driven in translation under the tools 2 and in a direction perpendicular to the axis of rotation of said tools.

Le moyen d'entrainement en translation de la bande sans fin 6 est de préférence constitué par au moins un des cylindres 7 sur les­quels est tendue la dite bande.
A cet effet, le ou les cylindres 7 sont entrainés en rotation par au moins un moteur.
Préférentiellement, un seul des cylindres 7 est entrainé en rota­tion.The drive means in translation of the endless belt 6 is preferably constituted by at least one of the cylinders 7 on which the said band is stretched.
To this end, the cylinder or cylinders 7 are rotated by at least one engine.
Preferably, only one of the cylinders 7 is rotated.

D'autre part, au moins un des cylindres 7 est doté sur ses paliers de guidage d'un dipositif de réglage de la tension de la bande sans fin 6.
La dite bande sans fin présente donc en considérant son sens d'avance un brin ascendant 6A et un brin descendant 6B.On the other hand, at least one of the cylinders 7 is provided on its guide bearings with a device for adjusting the tension of the endless belt 6.
Said endless band therefore presents, considering its direction of advance, an ascending strand 6A and a descending strand 6B.

Avantageusement, au dessus du brin ascendant est placé un moyen d'alimentation 8.
Ce moyen d'alimentation 8 est constitué de préférence, par un tapis sans fin 9 tendu entre aux moins deux galets 10 dont au moins un est entrainé en rotation par un moteur.Advantageously, above the ascending strand is placed a supply means 8.
This supply means 8 preferably consists of an endless belt 9 stretched between at least two rollers 10, at least one of which is driven in rotation by a motor.

Le traitement des peaux est réalisé en continu, ainsi la bande sans fin 6 est actionnée de façon ininterrompue.The treatment of the skins is carried out continuously, thus the endless belt 6 is actuated in an uninterrupted manner.

Afin d'assurer la sécurité de l'utilisateur le moyen d'alimenta­tion 8 constitué par le tapis sans fin 9 fonctionne de façon intermittente et est commandé par l'utilisateur.
Ceci laisse à ce dernier le temps d'installer de façon convenable la peau sur le tapis sans fin 9 sans risque.In order to ensure the safety of the user, the supply means 8 constituted by the endless belt 9 operates intermittently and is controlled by the user.
This gives the latter time to properly install the skin on the endless belt 9 without risk.

L'ordre d'introduction est donné lorsque la peau est en place sans qu'il soit nécessaire que le traitement de la peau précéden­te soit terminé.The order of introduction is given when the skin is in place without it being necessary for the treatment of the previous skin to be completed.

La translation du tapis sans fin 9 est telle que la peau est ame­ née sur la partie supérieure du brin ascendant 6A de la bande sans fin 6 pour être supportée ensuite par cette dernière.The translation of the endless belt 9 is such that the skin is soft born on the upper part of the ascending strand 6A of the endless belt 6 to then be supported by the latter.

De façon connue le premier outil 2 en considérant le sens d'avan­ce de la bande sans fin 6 tourne dans un sens de rotation inverse par rapport au sens de translation de la dite bande tandis que l'autre outil 2 tourne dans le même sens que le sens de trans­lation de la bande 6.In a known manner, the first tool 2, considering the direction of advance of the endless belt 6 rotates in a reverse direction of rotation relative to the direction of translation of said band while the other tool 2 rotates in the same direction as the direction of translation of the strip 6.

Afin de maintenir la peau sous les outils 2 et sur la bande sans fin 6 de support la machine est dotée de moyens de maintien 5 de la dite peau.
In order to hold the skin under the tools 2 and on the endless support strip 6, the machine is provided with means 5 for holding the said skin.

Ces moyens de maintien 5 sont constitués par au moins un rouleau 11 de pression disposé entre les outils 2 et entrainé en rotation et par au moins un rouleau 12 de soutien disposé à l'intérieur de la bande sans fin 6 entre les deux cylindres supérieurs 7A.These holding means 5 are constituted by at least one pressure roller 11 disposed between the tools 2 and driven in rotation and by at least one support roller 12 disposed inside the endless belt 6 between the two upper cylinders 7A .

Les rouleaux 11 et 12 sont destinés à serrer entre eux la bande sans fin 6 et la peau à traiter en permettant toutefois l'avance de celle-ci dans la machine.The rollers 11 and 12 are intended to clamp between them the endless belt 6 and the skin to be treated, while nevertheless allowing the latter to advance in the machine.

Le ou les rouleaux de pression 11 rotatifs sont parallèles aux outils 2 et sont fixes en position entre ceux-ci.
Le ou les dits rouleaux de pression et les outils 2 ont une tangente commune horizontale du côté de la bande sans fin 6.The rotary pressure roller or rollers 11 are parallel to the tools 2 and are fixed in position therebetween.
The said pressure roller (s) and the tools 2 have a common horizontal tangent on the side of the endless belt 6.

Préférentiellement, la machine comporte un seul rouleau de sou­tien 12 intérieur à la bande sans fin 6 et qui est monté libre en rotation.Preferably, the machine comprises a single support roller 12 inside the endless belt 6 and which is mounted free to rotate.

Ce rouleau de pression 12 est de préférence disposé au dessus du plan horizontal contenant les axes de rotation des cylindres supérieurs 7A supportant la dite bande sans fin de façon que l'écartement de celle-ci par rapport à ou aux rouleaux de pres­sion 12 et au droit de ceux-ci soit plus faible que par rapport aux outils 2 de travail au droit de ceux-ci.This pressure roller 12 is preferably disposed above the horizontal plane containing the axes of rotation of the upper cylinders 7A supporting the said endless belt so that the spacing of the latter relative to or to the pressure rollers 12 and to the right of these is weaker than compared to 2 working tools to the right of these.

Suivant les perfectionnements selon l'invention de la machine, les cylindres supérieurs 7A, les cylindres inférieurs 7B et le rouleau de soutien 12 sont montés sur un même châssis 13 mobile en translation par rapport aux outils 2 et à ou aux rou­leaux de pression 11 dans un sens parallèle aux deux plans paral­lèles contenant chacun les axes de révolution d'un outil 2 et d'un cylindre supérieur 7A et le rouleau de soutien 12 est mobile en translation relativement au dit châssis commun aux cylindres supérieurs 7A et inférieurs 7B.According to the improvements according to the invention of the machine, the upper cylinders 7A, the lower cylinders 7B and the support roller 12 are mounted on the same chassis 13 movable in translation relative to the tools 2 and to or from the pressure rollers 11 in a direction parallel to the two parallel planes each containing the axes of revolution of a tool 2 and an upper cylinder 7A and the support roller 12 is movable in translation relative to said common frame with the upper cylinders 7A and lower 7B.

Les dits cylindres supérieurs et inférieurs sont guidés en rota­tion dans des paliers (non représentés) portés par le châssis 13.Said upper and lower cylinders are guided in rotation in bearings (not shown) carried by the chassis 13.

Contre le dit châssis vient se fixer le moteur d'entrainement en rotation d'un des cylindres 7.
Le rouleau de soutien 12 est également monté dans des paliers de guidage en rotation placés sur le châssis 13.Against the said chassis, the rotary drive motor of one of the cylinders 7 is fixed.
The support roller 12 is also mounted in rotational guide bearings placed on the frame 13.

Ces paliers sont placés dans une échancrure 14 ménagée dans le châssis et sont maintenus en pression vers le haut par un res­sort 15 qui permet la mobilité relative en translation du rouleau de soutien 12 par rapport au châssis 13.These bearings are placed in a notch 14 formed in the chassis and are kept in upward pressure by a spring 15 which allows the relative mobility in translation of the support roller 12 relative to the chassis 13.

Le châssis 13 est monté sur les moyens d'entrainement en écar­tement relatif de la bande sans fin 6 par rapport aux outils 2 et au ou aux rouleaux de pression 11 tels que représentés en figure 8.The chassis 13 is mounted on the drive means in relative spacing of the endless belt 6 relative to the tools 2 and to the pressure roller (s) 11 as shown in FIG. 8.

Selon une forme de réalisation préférentielle, ces moyens d'en­trainement en écartement relatif sont constitués par un moteur 16 entrainant en sortie de chaines sans fin 17 disposées horizonta­lement et de part et d'autre de l'arbre de sortie du moteur 16, par deux montants verticaux 18 solidaires du châssis 13 et en­trainés chacun en translation par un ensemble plateau-manivelle 19 dont le plateau est entrainé en rotation par une chaîne 17.According to a preferred embodiment, these drive means in relative spacing consist of a motor 16 driving at the output of endless chains 17 arranged horizontally and on either side of the output shaft of the motor 16, by two vertical uprights 18 integral with the chassis 13 and each driven in translation by a plate-crank assembly 19 whose plate is rotated by a chain 17.

Avantageusement, la manivelle de l'ensemble est dotée d'un régla­ge de sa longueur afin de régler la course du châssis A3.Advantageously, the crank of the assembly is provided with a length adjustment in order to adjust the stroke of the A3 chassis.

Le châssis 13 est guidé en translation par des glissières et des rails 20 ménagé entre le dit bâti 21 de la machine.The chassis 13 is guided in translation by slides and rails 20 formed between said frame 21 of the machine.

Le fonctionnement de la machine est le suivant :
Après mise en place de la peau sur le moyen d'alimentation 8 l'utilisateur donne l'ordre au dit moyen d'alimentation de fonc­tionner.
La bande sans fin 6 de la machine fonctionne de façon continue et les outils 2 et les rouleaux de pression 11 sont écartés de la dite bande sans fin en position initiale (figure 1).
Un détecteur 22 est placé en extrémité du moyen d'alimentation 8 et est destiné à détecter le passage d'une peau (figure 2).The operation of the machine is as follows:
After placing the skin on the supply means 8, the user instructs said supply means to operate.
The endless belt 6 of the machine operates continuously and the tools 2 and the pressure rollers 11 are moved away from said endless belt in the initial position (FIG. 1).
A detector 22 is placed at the end of the supply means 8 and is intended to detect the passage of a skin (FIG. 2).

La peau est prise en charge lors de sa sortie du moyen d'alimen­ tation 8 par le brin ascendant 6A de la bande sans fin 6.The skin is taken care of when it leaves the feeding means 8 by the upward strand 6A of the endless belt 6.

Le détecteur 22 suite au passage de la peau donne l'ordre à une temporisation de se mettre en marche.
La fin de celle-ci commande la fermeture de la machine, c'est-à-­dire la translation du châssis 13 et donc de la bande sans fin vers les outils 2 et les rouleaux de pression 11 (figure 4).The detector 22 following the passage of the skin gives the order to a time delay to start.
The end of it controls the closing of the machine, that is to say the translation of the chassis 13 and therefore of the endless belt towards the tools 2 and the pressure rollers 11 (FIG. 4).

Le temps de temporisation entre la détection de la peau et le fermeture de la machine est fonction de la vitesse de la bande sans fin et est telle que la fermeture se produit lorsque l'ex­trémité avant de la peau est passée au delà des rouleaux de pres­sion 11 (figure 3).The time delay between skin detection and machine closure is a function of the speed of the endless belt and is such that closure occurs when the front end of the skin has passed past the pressure rollers. 11 (Figure 3).

Ainsi lors de la fermeture les rouleaux de pression 11 s' appuient totalement sur la peau et dans une zone de celle-ci où la résis­tance est grande.
Le rouleau de soutien 12 étant plus haut que les cylindres supé­rieurs 7A le serrage de la peau se fait avant le commencement du travail par les outils 2.Thus when closing the pressure rollers 11 are completely supported on the skin and in an area thereof where the resistance is high.
The support roller 12 being higher than the upper cylinders 7A the tightening of the skin is done before the start of work by the tools 2.

Ainsi par la translation verticale du châssis 13 la peau portée par la bande sans fin 6 mobile est d'abord serrée entre les rou­leaux 11 et 12 sur la dite bande.Thus, by the vertical translation of the chassis 13, the skin carried by the endless moving band 6 is firstly clamped between the rollers 11 and 12 on the said band.

Le châssis 13 continue à progresser ce qui provoque le mouve­ment relatif par rapport au rouleau de soutien 12 qui est à cet effet monté sur les ressorts 15.
La progression du châssis se poursuit jusqu'à ce que les outils soient en position de travail.The chassis 13 continues to progress, which causes the relative movement relative to the support roller 12 which is for this purpose mounted on the springs 15.
Chassis progression continues until the tools are in the working position.

Ainsi le premier outil 2, c'est-à-dire celui le plus proche du moyen d'alimentation 8 commence à travailer la peau, tandis que le deuxième outil 2 ne peut la travailler car la dite peau n'est pas encore disposée sous lui (figure 4).Thus the first tool 2, that is to say the one closest to the supply means 8 begins to work the skin, while the second tool 2 cannot work it because the said skin is not yet disposed under him (Figure 4).

La peau entrainée en translation progresse sous le premier outil 2 et s'engage ensuite par sa partie avant non encore traitée sous le deuxième outil 2.The skin driven in translation progresses under the first tool 2 and then engages by its front part not yet treated under the second tool 2.

Selon la taille de la peau les outils 2 travaillent à un moment simultanément (figure 5).Depending on the size of the skin, the tools 2 work simultaneously at a time (Figure 5).

Dès que le détecteur 22 détecte la fin de la peau une temporisa­tion fonctionne et détermine à sa fin l'arrêt du travail (figu­re 5).
Cette temporisation est fonction toujours de la vitesse de la bande sans fin et est telle que le travail est arrêté lorsque l'extrémité arrière de la peau est passée au delà du premier outil 2 (figure 6).As soon as the detector 22 detects the end of the skin, a time delay operates and determines at its end the cessation of work (FIG. 5).
This time delay is always a function of the speed of the endless belt and is such that work is stopped when the rear end of the skin has passed beyond the first tool 2 (FIG. 6).

A cet instant le châssis 13 entame sa translation verticale vers le bas provoquant ainsi l'écartement simultané du premier outil 2 de la bande 6 et du deuxième outil 2 de la peau, cette dernière étant toujours serrée par les rouleaux 11 et 12, car le châssis 13 dans un premier temps à un mouvement relatif par rapport au rouleau 12 de soutien.At this instant, the chassis 13 begins its vertical translation downwards, thus causing the first tool 2 of the strip 6 and the second tool 2 to be separated from the skin, the latter being always clamped by the rollers 11 and 12, because the chassis 13 initially relative to the support roller 12.

Ensuite la peau est dessérée des dits rouleaux par la poursuite de la descente du châssis 13 (figure 7).
Le détecteur 22 peut également commander l'arrêt du moyen d'alimentation 8 pour permettre à l'utilisateur de placer une autre peau sur ce dernier.Then the skin is loosened from said rollers by the continued descent of the frame 13 (Figure 7).
The detector 22 can also control the stopping of the means 8 to allow the user to place another skin on it.

Pendant et après l'ouverture de la machine la bande sans fin 6 continue à fonctionner pour évacuer la peau au niveau de l'extré­mité inférieure de son brin descendant 6B.
La bande sans fin 6 fonctionne de façon continue et une autre peau peut être introduite dans la machine avant que la peau précédente ne soit totalement évacuée (figure 7).During and after the opening of the machine, the endless belt 6 continues to function to evacuate the skin at the level of the lower end of its descending strand 6B.
The endless belt 6 operates continuously and another skin can be introduced into the machine before the previous skin is completely removed (Figure 7).

La peau sort de la machine entièrement traitée, sa partie avant l'ayant été par le second outil 2 et sa partie arrière par le premier.The skin leaves the fully treated machine, its front part having been by the second tool 2 and its rear part by the first.

Telle que représentée aux figures 1 à 7 la machine comporte deux rouleaux de pression 11 rotatifs parallèles disposés dans un même plan horizontal et le rouleau de soutien 12 est disposé dans un plan vertical passant entre les deux rouleaux de pression 11.As shown in FIGS. 1 to 7, the machine comprises two parallel rotary pressure rollers 11 arranged in the same horizontal plane and the support roller 12 is arranged in a vertical plane passing between the two pressure rollers 11.

Il va de soi que la machine peut comporter un seul rouleau de pression 11 entrainé en rotation par un moteur et disposé dans un plan vertical contenant le rouleau de soutien 12.It goes without saying that the machine can comprise a single pressure roller 11 rotated by a motor and arranged in a vertical plane containing the support roller 12.

La machine dotée des perfectionnements selon l'invention est éga­lement pourvue des aménagements prévus dans la demande 85 14311 de Monsieur MOULIN soit des dispositifs d'affutage des lames des outils 2, des systèmes de rattrapage de l'usure des dits outils, d'un ensemble assurant la synchronisation des divers moteurs actionnant chacun un élément de la machine, des ensembles de net­ toyage de la bande, de récupération et d'évacuation des déchets.The machine provided with improvements according to the invention is also provided with the arrangements provided for in application 85 14311 of Mr. MOULIN, namely devices for sharpening the blades of tools 2, systems for taking up the wear of said tools, a assembly ensuring the synchronization of the various motors each actuating an element of the machine, net assemblies tape cleaning, recovery and disposal of waste.

Les perfectionnements apportés aux machines de travail mécanique en continu des peaux permet d'obtenir un excellent travail sur la peau et garantit des conditions de sécurité accrue.The improvements made to the machines for continuous mechanical working of the skins make it possible to obtain an excellent work on the skin and guarantees conditions of increased safety.

Il va de soi que la présente invention peur recevoir tous aména­gements et toutes variantes dans le domaine des équivalents tech­niques sans pour autant sortir du cadre du présent brevet.It goes without saying that the present invention can receive all arrangements and all variants in the field of technical equivalents without departing from the scope of this patent.

Claims (2)

1. Machine pour le travail mécanique en continu des peaux en mégisserie et en tannerie comportant :
- au moins une tête de travail (1) portant au moins un outil (2) rotatif.
- au moins un moyen de support (3) de la peau constitué d'une bande sans fin (6) tendue entre deux cylindres supérieurs (7A) et au moins un cylindre inférieur (7B).
- au moins un moyen d'entrainement du moyen de support (3) et de la peau sous les têtes de travail (1).
- au moins un moyen de maintien (5) de la peau lors du tra­vail mécanique de celle-ci constitué d'au moins un rouleau de pression (11) rotatif disposé entre les outils (2) et d'au moins un rouleau de soutien (12) disposé à l'intérieur de la bande (6) entre les cylindres supérieurs (7A) et au dessus du plan horizontal contenant ces derniers.
- et des moyens d'entrainement en écartement relatif du sup­port (3) de la peau par rapport à ou aux dites têtes de travail et à ou aux moyens de maintien (5) de la dite peau, machine caractérisée en ce que les cylindres supérieurs (7A), les cylindres inférieurs (7B) et le rouleau de sou­tien (12) supportant la bande sans fin (6) sont montés sur un même châssis (13) mobile en translation par rapport aux outils (2) et à ou aux rouleaux de pression (11) dans un sens parallèle aux deux plans parallèles contenant cha­cun les axes de révolution d'un outil (2) et d'un cylindre supérieur (7A) et en ce que le rouleau de soutien (12) est mobile en translation relativement au dit châssis commun aux cylindres supérieurs (7A) et inférieurs (7B) afin que le maintien de la peau soit assuré avant le début du tra­vail de celle-ci par les outils (2) et que le relâchement de la peau par les moyens de maintien (5) soit réalisé après la fin du travail de la dite peau par les outils (2).1. Machine for the continuous mechanical work of skins in tanning and tanning comprising:
- at least one working head (1) carrying at least one rotary tool (2).
- At least one support means (3) for the skin consisting of an endless band (6) stretched between two upper cylinders (7A) and at least one lower cylinder (7B).
- At least one means for driving the support means (3) and the skin under the working heads (1).
- at least one means for holding (5) the skin during its mechanical work, consisting of at least one rotary pressure roller (11) disposed between the tools (2) and at least one support roller (12) disposed inside the strip (6) between the upper cylinders (7A) and above the horizontal plane containing the latter.
- And drive means in relative spacing of the support (3) of the skin relative to or to said working heads and to or to the holding means (5) of said skin, machine characterized in that the upper cylinders (7A), the lower cylinders (7B) and the support roller (12) supporting the endless belt (6) are mounted on the same chassis (13) movable in translation relative to the tools (2) and to or to the rollers pressure (11) in a direction parallel to the two parallel planes each containing the axes of revolution of a tool (2) and an upper cylinder (7A) and in that the support roller (12) is movable in translation relative to said chassis common to the upper (7A) and lower (7B) cylinders so that the skin is maintained before the work begins by the tools (2) and that the skin is released by the holding means (5) after the work of the said skin is completed by the tools (2). 2. Machine selon la revendication 1 caractérisée en ce que le rouleau de soutien (12) intérieur à la bande sans fin (6) est monté sur des ressorts (15) dans le châssis (13).2. Machine according to claim 1 characterized in that the support roller (12) inside the endless belt (6) is mounted on springs (15) in the frame (13).
EP89450002A 1988-02-03 1989-02-02 Apparatus for the continuous mechanical treatment of hides in chamois-dressing and tannery Ceased EP0327482A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801419 1988-02-03
FR8801419A FR2626585B1 (en) 1988-02-03 1988-02-03 IMPROVEMENTS IN MACHINES FOR THE CONTINUOUS MECHANICAL WORK OF SKINS IN LEATHER AND TANNERY

Publications (1)

Publication Number Publication Date
EP0327482A1 true EP0327482A1 (en) 1989-08-09

Family

ID=9363024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89450002A Ceased EP0327482A1 (en) 1988-02-03 1989-02-02 Apparatus for the continuous mechanical treatment of hides in chamois-dressing and tannery

Country Status (2)

Country Link
EP (1) EP0327482A1 (en)
FR (1) FR2626585B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1391897B1 (en) * 2008-09-08 2012-01-27 Bauce Tri Ma S R L CONTINUOUS SKIN FEEDING MACHINE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR464273A (en) *
US2169754A (en) * 1936-11-23 1939-08-15 A C Lawrence Leather Company Fleshing machine
FR1276456A (en) * 1960-12-20 1961-11-17 Strojosvit Np Automatic machine for the treatment of skins, leathers and the like
FR2587724A1 (en) * 1985-09-25 1987-03-27 Moulin Dominique Machine for continuous mechanical working of skins in skin dressing and tanning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR464273A (en) *
US2169754A (en) * 1936-11-23 1939-08-15 A C Lawrence Leather Company Fleshing machine
FR1276456A (en) * 1960-12-20 1961-11-17 Strojosvit Np Automatic machine for the treatment of skins, leathers and the like
FR2587724A1 (en) * 1985-09-25 1987-03-27 Moulin Dominique Machine for continuous mechanical working of skins in skin dressing and tanning

Also Published As

Publication number Publication date
FR2626585A1 (en) 1989-08-04
FR2626585B1 (en) 1990-07-06

Similar Documents

Publication Publication Date Title
FR2530927A1 (en) Device for removing gristle from pieces of meat.
EP0000851B1 (en) Automatic machine for cutting a thermoplastic tube in parts and for applying sleeves around containers
FR2521836A1 (en) TURNING MACHINE FOR VEGETABLES OR SIMILAR PRODUCTS
FR2555864A1 (en) DEVICE AND METHOD FOR FEEDING MEAT OF A PELER MACHINE, AND THE MACHINE
FR2496407A1 (en) METHOD AND DEVICE FOR REMOVING AREAS OF FISH
FR2620597A1 (en) MACHINE TO DISCOVER LARD
EP1759600B1 (en) Method and apparatus for trimming salads
EP0327482A1 (en) Apparatus for the continuous mechanical treatment of hides in chamois-dressing and tannery
EP0012088B1 (en) Method and apparatus for treating bovine feet
BE1003931A3 (en) Safety device for machines divest meat.
FR2922787A1 (en) Container i.e. waste container, opening device for waste conveyor system, has spaces for separating plate from drum and separating drum from belt, where spaces are adjustable and/or defined by height of scrapping and scaffoling elements
FR2481636A1 (en) Machine to strip skin from or slice meat, fish etc. - has liq. pressure jets to prevent build=up of waste on stripping blade
FR2587724A1 (en) Machine for continuous mechanical working of skins in skin dressing and tanning
FR2899439A1 (en) Tobacco`s lighting end stripping device for separating leaves, has pantograph system adjusting height of assembly conveyor which is retractable using slide, driving roller maintaining lighting end on conveyor, and plates below conveyor
FR2913855A1 (en) Self-supported arrangement for unraveling, brushing and turning oyster bags, has turning units constituted of ejector and arranged under outlet of tunnel, where turning units turns oyster bags before resting of bags on longitudinal table
EP0108009A1 (en) Automatic deburring machine for small-dimensioned work pieces
EP0368769A1 (en) Process and apparatus for handling skins or leathers
FR2532951A1 (en) CONTINUOUS SHREDDER FOR TANNERY
EP2292392B1 (en) Device for setting extendible sleeves
EP0935418A1 (en) Method, device and installation for pulling out fat
FR2965455A1 (en) Method for automatic cutting of curved fresh sausages bar into equal lengths, involves collecting curved fresh sausages from curved sealer for cutting fresh sausages, and ejecting bar that contain fresh sausages toward storage zone
FR2520588A1 (en) DEVICE FOR SEPARATING THE SKIN OR SKIN OF MEAT OR LATCH
FR2638767A1 (en) Semi-automatic device for washing protective clothing, particularly for slaughterhouse aprons
EP0359684A1 (en) Sheet removal apparatus for a skin-splitting machine
FR2549409A1 (en) Device for cutting out flat pieces from flexible material, particularly a machine for cutting out slices of bacon and removing rind

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900123

17Q First examination report despatched

Effective date: 19910617

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19911215