EP2764961B1 - Apparatus for cutting tyre walls - Google Patents

Apparatus for cutting tyre walls Download PDF

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Publication number
EP2764961B1
EP2764961B1 EP14152216.9A EP14152216A EP2764961B1 EP 2764961 B1 EP2764961 B1 EP 2764961B1 EP 14152216 A EP14152216 A EP 14152216A EP 2764961 B1 EP2764961 B1 EP 2764961B1
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EP
European Patent Office
Prior art keywords
tire
arm
cutting
turntable
tread
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.)
Not-in-force
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EP14152216.9A
Other languages
German (de)
French (fr)
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EP2764961A1 (en
Inventor
Jeanick Guin
Christian Gallego
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GUIN, JEANICK
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Guin Jeanick
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Publication date
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Publication of EP2764961A1 publication Critical patent/EP2764961A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
    • B26D3/005—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber for cutting used tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/04—Means for moving the cutting member into its operative position for cutting by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

  • the invention relates to a device for cutting the sidewalls of tires.
  • the state of the art describes many devices in which the cutting is ensured by knives penetrating the tire either from the inside and radially, as in the document AU6884371 , either from the outside and transversely from each side as in the documents DE4200949 and WO98 / 24607 .
  • These devices comprise means for holding and positioning the tire in the space and means ensuring its rotational drive to obtain the cutting movement.
  • Such a device is entirely satisfactory in the context of occasional use, but is unsuitable for continuous use because of the time required to mount and dismount each tire on the jaws of the device and the duration of the cycle of the cutting operation.
  • the object of the invention is to overcome these drawbacks by improving the previously described apparatus so that, in the dimensional range of the current car tires, the operating cycle is automatic, of shorter duration and integrates the phase of the car. adaptation to the thickness of the tread.
  • the apparatus comprises means which, adapted to emit a laser beam parallel to the axis X'X of rotation of the plate and disposed above the knives, are associated with detector means, intervening during the approaching of the arm in the direction of the tread of the tire carried by the jaws of the plate, to signal to the control means the breaking of the laser beam by this tread, while the control means comprise delay means delaying the feeding of the means motors acting on the approximation of the sliders, so that the knives enter the sidewalls of the tire only when they are below the tread.
  • this tread stops the path of the laser beam and triggers the operation of the delay delaying the stopping of the movement in progress.
  • the arm continues to move closer to the tire by moving the knives until their cutting plane is no longer in the tread but only in the area of the flanks without wires.
  • the movement of the arm is stopped at the same time as the movement of the cutter slides is initiated.
  • Reference numeral 2 denotes the frame of the apparatus comprising a frame 3 resting on a base 4 and equipped with an access door 5.
  • the frame 3 supports means 6 for guiding in rotation about a horizontal axis X'X of a plate 7 serving as a lateral support for the tire 8 to be cut.
  • the plate 7 is connected in rotation to an electric motor 9 whose power supply via the conductors 10 is controlled by control means which, according to the invention, consist of a controller 12.
  • the figure 2 shows that the plate 7 carries means for holding and positioning the tire.
  • these means consist of jaws 13 slidably mounted in grooves 14 formed radially in the plate.
  • the jaws are five in number and are each connected by a connecting rod 15 to a common core 16 connected to an actuating means.
  • the actuating means is the rod 17a of a hydraulic jack 17 axially disposed in the frame 3 and controlled by a solenoid valve 21.
  • Each jaw 13 is L-shaped whose small branch 13a is provided with a pin 18 sliding in one of the grooves 14 of the plate and whose large branch 13b is at least as long as the width of the widest tires.
  • the frame 3 is secured to a support C 20 comprising a vertical leg 20a connected to the frame, a horizontal leg 20b and a free vertical branch 20c.
  • the latter forms a sliding slide for a horizontal arm 22, therefore parallel to the axis X'X of the apparatus, which can be moved vertically between an upper visible position of disengagement figure 1 , and a lower working position, visible figure 4 .
  • the arm 22 supports two sliders 23 disposed on either side of the tire receiving zone and each carrying a transverse knife 24 oriented towards the sidewall of the tire.
  • Each slider is connected to actuating means able to move it between a spaced apart position, visible at the figure 1 , and a close position of sectioning, visible to the figure 4 .
  • the actuating means respectively of the arm 22 on the support 20c and the knife-carrying slides 24 on the arm, are constituted by double-acting hydraulic cylinders 25, 26 and 27, respectively.
  • the various cylinders are fed by a common hydraulic unit 30 under the control of solenoid valves, respectively 25a, 26a and 27a, themselves controlled by the controller 12. It is the same for the axial cylinder 17 which is powered by the group hydraulic 30 under the control of a solenoid valve 17a.
  • the electrical connections between the automaton and the solenoid valves, as well as the hydraulic connections between the hydraulic unit 30 and these solenoid valves are not shown to facilitate understanding of the drawing, especially as the skilled person can imagine them without difficulty.
  • the apparatus is equipped with a laser emitter 32 emitting a horizontal ray 31 disposed above the knives 24 in the direction of a reflector 33. This emitter is connected by an electric circuit 34 to a detector 35 of the return of the laser beam reacting on the automaton 12.
  • the transmitter 32 is carried by the branch 20c and the reflector 33 by the branch 20a of the support 20, but they can also be carried by the sliders 23.
  • the plate 7 is stopped with its jaws 13 retracted towards the center of the plate and the knives 24 in their positions, respectively of vertical clearance and horizontal clearance, shown. figure 1 .
  • the delay time is set so that the vertical displacement of the knives 24 by the arm 22 absorbs without adjustment different tread thicknesses, generally ranging from 15 to 25 millimeters for automobile tires.
  • the same device can be set to cut only one side, so that, after cutting of this sidewall, the remaining part of the tire comprising the tread and the other side forms a tray that can be a plant container, after being filled with earth.
  • the apparatus also comprises, on the base and below the plate, a vessel 53 for receiving water and other liquids which can accumulate in the tires during storage and which escapes when the flanks are separated from the tire strip. rolling.
  • Knits 24 which, interchangeable and reversible and which, as shown in FIG. figure 5 , are symmetrical double bevel and form an acute angle has of the order of 20 degrees.
  • Each knife is formed at the end of a blade 54 which is pinched in a tool holder, not shown in detail. This arrangement makes it possible to obtain a regular cut, whatever the nature of the rubber in the sidewalls.
  • the blade 54a has four knives 24a, 24b, 24c and 24d formed by cutting at each of its corners. It is mounted in its tool holder so that it can be turned and turned so that when one of the knives is worn, it can be easily replaced by one of the other three, while respecting its cutting angles.
  • the figure 6 shows the application with two blades having four knives at the moment when the knives 24a will enter the pivoting tire in the direction of the arrow 55.
  • This type of knife reduces downtime for knife replacement and increases productivity.

Description

L'invention est relative à un appareil à découper les flancs des pneumatiques.The invention relates to a device for cutting the sidewalls of tires.

Il s'agit de séparer la bande de roulement d'un pneumatique de ses flancs dans le but de réduire l'encombrement du pneumatique et de faciliter la récupération ultérieure de ses composants, mais aussi le stockage et le transport.This is to separate the tread of a tire from its sidewalls in order to reduce the size of the tire and facilitate the subsequent recovery of its components, but also storage and transport.

L'état de la technique décrit de nombreux appareils dans lesquels le sectionnement est assuré par des couteaux pénétrant dans le pneu soit par l'intérieur et radialement, comme dans le document AU6884371 , soit par l'extérieur et transversalement de chaque coté comme dans les documents DE4200949 et WO98/24607 . Ces appareils comportent des moyens de maintien et de positionnement du pneumatique dans l'espace et des moyens assurant son entrainement en rotation pour obtenir le mouvement de coupe.The state of the art describes many devices in which the cutting is ensured by knives penetrating the tire either from the inside and radially, as in the document AU6884371 , either from the outside and transversely from each side as in the documents DE4200949 and WO98 / 24607 . These devices comprise means for holding and positioning the tire in the space and means ensuring its rotational drive to obtain the cutting movement.

Le déposant est cotitulaire du brevet français FR2780675 qui décrit un appareil simplifié destiné aux artisans et petites entreprises. Cet appareil comprend, porté par un socle :

  • un plateau rotatif porteur de mors coulissants aptes à venir en appui contre les talons des flancs d'un pneumatique en appui contre le plateau,
  • un support fixe portant un bras parallèle à l'axe X'X de rotation du plateau, ce bras pouvant être déplacé parallèlement à cet axe par des moyens d'actionnement, entre une position de dégagement du pneumatique et une position de travail,
  • des coulisseaux espacés qui, disposés de part et d'autre de la zone d'accueil du pneumatique et porteurs chacun d'un couteau transversal, orienté vers le flanc du pneumatique, sont montés coulissants sur le bras et reliés chacun à des moyens d'actionnement aptes à les déplacer en translation sur ce bras, entre une position écartée de dégagement de la bande de roulement et une position rapprochée de fin de course de sectionnement,
  • et des moyens de commande régissant la rotation du plateau et les déplacements dans les deux sens, du support, du bras et des coulisseaux, donc des couteaux.
The applicant is co-owner of the French patent FR2780675 which describes a simplified device for craftsmen and small businesses. This apparatus comprises, supported by a base:
  • a rotary plate carrying sliding jaws able to bear against the heels of the flanks of a tire resting against the plate,
  • a fixed support carrying an arm parallel to the axis X'X of rotation of the plate, this arm being able to be displaced parallel to this axis by actuating means, between a position of disengagement of the tire and a working position,
  • spaced sliders which, arranged on either side of the tire receiving zone and each carrying a transverse knife, oriented towards the sidewall of the tire, are slidably mounted on the arm and each connected to means for actuation able to move them in translation on this arm, between a separated position of clearance of the tread and a close position of end of sectioning stroke,
  • and control means governing the rotation of the plate and the movements in both directions, the support, the arm and the slides, and therefore the knives.

Un tel appareil donne entière satisfaction dans le cadre d'une utilisation occasionnelle, mais se révèle inadapté à une utilisation continue en raison du temps nécessaire au montage et au démontage de chaque pneumatique sur les mors de l'appareil et de la durée du cycle de l'opération de découpage.Such a device is entirely satisfactory in the context of occasional use, but is unsuitable for continuous use because of the time required to mount and dismount each tire on the jaws of the device and the duration of the cycle of the cutting operation.

A cet inconvénient s'ajoute celui résultant du temps qui est nécessaire pour effectuer sur l'appareil les réglages d'adaptation aux dimensions des pneumatiques devant être découpés, pneumatiques ayant un diamètre intérieur des talons allant de 12 à 22 pouces et une épaisseur de bande de roulement comprise entre 15 et 25 millimètres. Cela est d'autant plus important que, en cas de mauvais réglage, les couteaux peuvent s'enfoncer dans la zone du pneumatique contenant des câbles d'armature, ce qui a pour conséquence d'entraîner leur usure prématurée et voir même leur détérioration.To this disadvantage is added that resulting from the time which is necessary to carry out on the apparatus the adjustment adjustments to the dimensions of the tires to be cut, tires having an internal diameter heels ranging from 12 to 22 inches and a tread thickness of between 15 and 25 millimeters. This is all the more important because, in the event of incorrect adjustment, the knives can penetrate into the area of the tire containing reinforcing cables, which leads to their premature wear and even deterioration.

L'objet de l'invention est de remédier à ces inconvénients en perfectionnant l'appareil précédemment décrit afin que, dans la plage dimensionnelle des pneumatiques d'automobile courants, le cycle de fonctionnement soit automatique, de plus courte durée et intègre la phase d'adaptation à l'épaisseur de la bande de roulement.The object of the invention is to overcome these drawbacks by improving the previously described apparatus so that, in the dimensional range of the current car tires, the operating cycle is automatic, of shorter duration and integrates the phase of the car. adaptation to the thickness of the tread.

A cette fin, l'appareil comprend des moyens qui, aptes à émettre un rayon laser parallèle à l'axe X'X de rotation du plateau et disposé au dessus des couteaux, sont associés à des moyens détecteurs, intervenant lors du rapprochement du bras en direction de la bande de roulement du pneumatique porté par les mors du plateau, pour signaler aux moyens de commande la rupture du rayon laser par cette bande de roulement, tandis que les moyens de commande comprennent des moyens de temporisation retardant l'alimentation des moyens moteurs agissant sur le rapprochement des coulisseaux, afin que les couteaux ne pénètrent dans les flancs du pneumatique que lorsqu'ils sont au dessous de la bande de roulement.To this end, the apparatus comprises means which, adapted to emit a laser beam parallel to the axis X'X of rotation of the plate and disposed above the knives, are associated with detector means, intervening during the approaching of the arm in the direction of the tread of the tire carried by the jaws of the plate, to signal to the control means the breaking of the laser beam by this tread, while the control means comprise delay means delaying the feeding of the means motors acting on the approximation of the sliders, so that the knives enter the sidewalls of the tire only when they are below the tread.

Ainsi, lorsque le bras est rapproché de la bande de roulement pour amener les couteaux en position de travail, cette bande de roulement interrompt le cheminement du rayon laser et déclenche le fonctionnement de la temporisation qui retarde l'arrêt du mouvement en cours. Il en résulte que le bras continue à se rapprocher du pneumatique en déplaçant les couteaux jusqu'à ce que leur plan de coupe ne soit plus dans la bande de roulement mais uniquement dans la zone des flancs sans fils métalliques. Dès cette position relative atteinte, le déplacement du bras est arrêté en même temps qu'est lancé le rapprochement des coulisseaux porte-couteaux.Thus, when the arm is brought closer to the tread to bring the knives into the working position, this tread stops the path of the laser beam and triggers the operation of the delay delaying the stopping of the movement in progress. As a result, the arm continues to move closer to the tire by moving the knives until their cutting plane is no longer in the tread but only in the area of the flanks without wires. As soon as this relative position is reached, the movement of the arm is stopped at the same time as the movement of the cutter slides is initiated.

D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé représentant une forme d'exécution de l'appareil selon l'invention avec un axe de rotation horizontal.

  • Figure 1 est une vue de coté avec coupe partielle de l'ensemble de l'appareil ;
  • Figure 2 est une vue de face en élévation du plateau et ses mors en position d'extension maximale ;
  • Figures 3 et 4 sont des vues de coté, partielles et en coupe, montrant l'appareil respectivement dans la phase d'approche du bras et dans la phase de sectionnement du pneumatique ;
  • Figure 5 une vue de coté partielle, en coupe et à échelle agrandie, d'une forme d'exécution du couteau ;
  • Figure 6 est une vue à échelle agrandie montrant par-dessous une autre forme d'exécution des couteaux au moment où ils vont pénétrer dans le pneumatique.
Other features and advantages will become apparent from the description which follows with reference to the attached schematic drawing showing an embodiment of the apparatus according to the invention with a horizontal axis of rotation.
  • Figure 1 is a side view with partial section of the entire apparatus;
  • Figure 2 is a front elevational view of the plate and its jaws in maximum extension position;
  • Figures 3 and 4 are side views, partial and sectional, showing the apparatus respectively in the approach phase of the arm and in the cutting phase of the tire;
  • Figure 5 a partial side view, in section and on an enlarged scale, of an embodiment of the knife;
  • Figure 6 is an enlarged view showing below another embodiment of the knives as they enter the tire.

La référence numérique 2 désigne le bâti de l'appareil comprenant un châssis 3 reposant sur un socle 4 et équipé d'une porte d'accès 5.Reference numeral 2 denotes the frame of the apparatus comprising a frame 3 resting on a base 4 and equipped with an access door 5.

Le châssis 3 supporte des moyens 6 de guidage en rotation autour d'un axe horizontal X'X d'un plateau 7 servant d'appui latéral au pneumatique 8 devant être sectionné. Le plateau 7 est lié en rotation à un moteur électrique 9 dont l'alimentation par les conducteurs 10 est contrôlée par des moyens de commande qui, selon l'invention, sont constitués par un automate 12.The frame 3 supports means 6 for guiding in rotation about a horizontal axis X'X of a plate 7 serving as a lateral support for the tire 8 to be cut. The plate 7 is connected in rotation to an electric motor 9 whose power supply via the conductors 10 is controlled by control means which, according to the invention, consist of a controller 12.

La figure 2 montre que le plateau 7 porte des moyens de maintien et de positionnement du pneumatique. Dans la forme d'exécution représentée, ces moyens sont constitués par des mors 13 montés coulissants dans des rainures 14 ménagées radialement dans le plateau. Les mors sont au nombre de cinq et sont chacun reliés par une bielle 15 à un noyau commun 16 lié à un moyen d'actionnement.The figure 2 shows that the plate 7 carries means for holding and positioning the tire. In the embodiment shown, these means consist of jaws 13 slidably mounted in grooves 14 formed radially in the plate. The jaws are five in number and are each connected by a connecting rod 15 to a common core 16 connected to an actuating means.

Dans cette réalisation, le moyen d'actionnement est la tige 17a d'un vérin hydraulique 17 disposé axialement dans le châssis 3 et piloté par une électrovanne 21. Chaque mors 13 est en forme de L dont la petite branche 13a est munie d'un tenon 18 coulissant dans l'une des rainures 14 du plateau et dont la grande branche 13b est au moins aussi longue que la largeur des pneumatiques les plus larges.In this embodiment, the actuating means is the rod 17a of a hydraulic jack 17 axially disposed in the frame 3 and controlled by a solenoid valve 21. Each jaw 13 is L-shaped whose small branch 13a is provided with a pin 18 sliding in one of the grooves 14 of the plate and whose large branch 13b is at least as long as the width of the widest tires.

Le châssis 3 est solidaire d'un support en C 20 comprenant une branche verticale 20a liée au châssis, une branche horizontale 20b et une branche verticale libre 20c. Cette dernière constitue glissière de coulissement pour un bras horizontal 22, donc parallèle à l'axe X'X de l'appareil, pouvant être déplacé verticalement entre une position supérieure de dégagement, visible figure 1, et une position inférieure de travail, visible figure 4.The frame 3 is secured to a support C 20 comprising a vertical leg 20a connected to the frame, a horizontal leg 20b and a free vertical branch 20c. The latter forms a sliding slide for a horizontal arm 22, therefore parallel to the axis X'X of the apparatus, which can be moved vertically between an upper visible position of disengagement figure 1 , and a lower working position, visible figure 4 .

Le bras 22 supporte deux coulisseaux 23 disposés de part et d'autre de la zone d'accueil du pneumatique et portant chacun un couteau transversal 24 orienté vers le flanc du pneumatique. Chaque coulisseau est relié à des moyens d'actionnement aptes à la déplacer entre une position écartée de dégagement, visible à la figure 1, et une position rapprochée de sectionnement, visible à la figure 4.The arm 22 supports two sliders 23 disposed on either side of the tire receiving zone and each carrying a transverse knife 24 oriented towards the sidewall of the tire. Each slider is connected to actuating means able to move it between a spaced apart position, visible at the figure 1 , and a close position of sectioning, visible to the figure 4 .

Selon l'invention, les moyens d'actionnement, respectivement du bras 22 sur le support 20c et des coulisseaux porte-couteau 24 sur le bras, sont constitués par des vérins hydrauliques à double effet, respectivement 25, 26 et 27.According to the invention, the actuating means, respectively of the arm 22 on the support 20c and the knife-carrying slides 24 on the arm, are constituted by double-acting hydraulic cylinders 25, 26 and 27, respectively.

Les différents vérins sont alimentés par une centrale hydraulique commune 30 sous le contrôle d'électrovannes, respectivement 25a, 26a et 27a, elles mêmes pilotées par l'automate 12. Il en est de même pour le vérin axial 17 qui est alimenté par le groupe hydraulique 30 sous le contrôle d'une électrovanne 17a. Sur la figure 1, les liaisons électriques entre l'automate et les électrovannes, de même que les liaisons hydrauliques entre le groupe hydraulique 30 et ces électrovannes ne sont pas représentées pour faciliter la compréhension du dessin, d'autant plus que l'homme de métier pourra les imaginer sans difficulté.The various cylinders are fed by a common hydraulic unit 30 under the control of solenoid valves, respectively 25a, 26a and 27a, themselves controlled by the controller 12. It is the same for the axial cylinder 17 which is powered by the group hydraulic 30 under the control of a solenoid valve 17a. On the figure 1 the electrical connections between the automaton and the solenoid valves, as well as the hydraulic connections between the hydraulic unit 30 and these solenoid valves are not shown to facilitate understanding of the drawing, especially as the skilled person can imagine them without difficulty.

L'appareil est équipé d'un émetteur laser 32 émettant un rayon horizontal 31 disposé au dessus des couteaux 24 en direction d'un réflecteur 33. Cet émetteur est relié par un circuit électrique 34 à un détecteur 35 du retour du rayon laser réagissant sur l'automate 12.The apparatus is equipped with a laser emitter 32 emitting a horizontal ray 31 disposed above the knives 24 in the direction of a reflector 33. This emitter is connected by an electric circuit 34 to a detector 35 of the return of the laser beam reacting on the automaton 12.

A la figure 1, l'émetteur 32 est porté par la branche 20c et le réflecteur 33 par la branche 20a du support 20, mais ils peuvent aussi être portés par les coulisseaux 23.To the figure 1 , the transmitter 32 is carried by the branch 20c and the reflector 33 by the branch 20a of the support 20, but they can also be carried by the sliders 23.

L'installation électrique comprend aussi :

  • sur le châssis 3, un capteur 36 relié à l'automate 12 par un circuit électrique 37 et destiné à détecter la présence d'un pneumatique 8,
  • sur l'un des coulisseaux 23, un capteur de proximité 38 relié à l'automate 12 par un circuit électrique 39,
  • dans l'automate 12, un moyens de temporisation 40 piloté par le détecteur 35,
  • et un contact 42, détectant la fermeture de la porte 5 et relié à l'automate 12 par un circuit 43.
The electrical installation also includes:
  • on the chassis 3, a sensor 36 connected to the controller 12 by an electric circuit 37 and intended to detect the presence of a tire 8,
  • on one of the slides 23, a proximity sensor 38 connected to the controller 12 by an electric circuit 39,
  • in the controller 12, a delay means 40 controlled by the detector 35,
  • and a contact 42, detecting the closing of the door 5 and connected to the controller 12 by a circuit 43.

En début de cycle, le plateau 7 est à l'arrêt avec ses mors 13 rétractés vers le centre du plateau et les couteaux 24 dans leurs positions, respectivement de dégagement vertical et de dégagement horizontal, montrées figure 1.At the beginning of the cycle, the plate 7 is stopped with its jaws 13 retracted towards the center of the plate and the knives 24 in their positions, respectively of vertical clearance and horizontal clearance, shown. figure 1 .

Après avoir ouvert la porte d'accès 5, l'opérateur pose le pneumatique 8 sur les mors 13 en le plaquant contre le plateau 7, puis s'éloigne et ferme la porte 5 de la cabine formée dans le bâti 2. Par le contact de porte 42, cette fermeture déclenche le lancement du cycle de sectionnement comprenant les phases suivantes :

  • vérification de la présence d'un pneumatique 8 par le capteur 36,
  • alimentation du vérin axial 17 pour écarter les mors 13 jusqu'à leur contact ferme contre les talons 8a du pneumatique,
  • alimentation du moteur électrique 9 et lancement en rotation du plateau et du pneumatique,
  • alimentation du vérin 25 pour déplacer verticalement vers le bas le bras 22 et le rapprocher pneumatique, (flèche 41)
  • constat par le détecteur 35 de l'interruption par la bande de roulement 8b du pneumatique du faisceau retour du laser, comme montré à la figure 3
  • mise en fonctionnement des moyens de temporisation 40 retardant l'arrêt de l'abaissement du bras 22, afin que le plan de coupe Pc des couteaux 24 vienne au dessous de la bande de roulement 8b, (comme montré à la figure 3)
  • à la fin de la durée de temporisation, arrêt du déplacement du bras 22 vers le bas et alimentation des vérins 26 et 27 pour rapprocher les couteaux 24 des flancs 8c du pneumatique et engager le sectionnement de ces flancs, comme montré par les flèches 51 à la figure 4,
  • détection par le capteur 38 de la proximité du flanc 8c, entrainant arrêt de la rotation du plateau 7 et du pneumatique 8, écartement des coulisseaux 23, remontée du bras 22, et rétraction des mors 13 pour libérer la bande de roulement et accéder au flanc arrière.
After opening the access door 5, the operator places the tire 8 on the jaws 13 by pressing against the plate 7, then moves away and closes the door 5 of the cabin formed in the frame 2. By the contact of door 42, this closure triggers the launch of the sectioning cycle comprising the following phases:
  • checking the presence of a tire 8 by the sensor 36,
  • feeding the axial jack 17 to move the jaws 13 to their firm contact against the beads 8a of the tire,
  • supplying the electric motor 9 and launching the platform and the tire in rotation,
  • supply of the jack 25 to move the arm 22 vertically downwards and bring it closer to the air, (arrow 41)
  • detection by the detector 35 of the interruption by the tread 8b of the tire of the laser return beam, as shown in FIG. figure 3
  • putting into operation the delay means 40 delaying the stopping of the lowering of the arm 22 so that the cutting plane Pc of the knives 24 comes under the tread 8b (as shown in FIG. figure 3 )
  • at the end of the delay time, stopping the movement of the arm 22 downwards and supplying the jacks 26 and 27 to bring the knives 24 of the sidewalls 8c of the tire and engage the cutting of these flanks, as shown by the arrows 51 to the figure 4 ,
  • detection by the sensor 38 of the proximity of the sidewall 8c, causing stop rotation of the plate 7 and the tire 8, spacing of the sliders 23, raising of the arm 22, and retraction of the jaws 13 to release the tread and access the sidewall back.

Avec cet appareil et en présence de pneumatiques courants ayant un diamètre intérieur des talons allant de 13 à 17 pouces l'ensemble du cycle se déroule sur 15 secondes, au lieu de 60 secondes avec un appareil traditionnel à commande manuelle. Compte tenu des temps de mise en place et d'enlèvement des découpes cela permet de traiter journellement de 800 à 1 000 pneumatiques, donc de résorber aisément le stock de pneumatiques usagés encombrants les décharges.With this device and in the presence of common tires having an inside diameter of heels ranging from 13 to 17 inches the entire cycle takes place over 15 seconds, instead of 60 seconds with a traditional hands-on device. Taking into account the times of setting up and removal of the cuttings it makes it possible to treat 800 to 1000 tires daily, thus to easily resorb the stock of used tires bulky the discharges.

La durée de temporisation est réglée de manière que le déplacement vertical des couteaux 24 par le bras 22 absorbe sans réglage des épaisseurs de bandes de roulement différentes, allant en général de 15 à 25 millimètres pour les pneumatiques d'automobile.The delay time is set so that the vertical displacement of the knives 24 by the arm 22 absorbs without adjustment different tread thicknesses, generally ranging from 15 to 25 millimeters for automobile tires.

Le même appareil peut être réglé pour ne sectionner qu'un flanc, afin que, après sectionnement de ce flanc, la partie restante du pneumatique comprenant la bande de roulement et l'autre flanc forme un bac pouvant constituer bac à végétaux, après avoir été rempli de terre.The same device can be set to cut only one side, so that, after cutting of this sidewall, the remaining part of the tire comprising the tread and the other side forms a tray that can be a plant container, after being filled with earth.

L'appareil comprend aussi, sur le socle et au dessous du plateau, une cuve 53 de réception des eaux et autres liquides pouvant s'accumuler dans les pneumatiques lors de leur stockage et qui s'échappe quand les flancs sont séparés de la bande de roulement.The apparatus also comprises, on the base and below the plate, a vessel 53 for receiving water and other liquids which can accumulate in the tires during storage and which escapes when the flanks are separated from the tire strip. rolling.

Le sectionnement est assuré par des couteaux 24 qui, interchangeables et réversibles et qui, comme le montre la figure 5, sont en double biseau symétrique et forment un angle aigu a de l'ordre de 20 degrés. Chaque couteau est formé à l'extrémité d'une lame 54 qui est fixé par pincement dans un porte outil, non représenté en détail. Cet agencement permet d'obtenir une coupe régulière, quelle que soit la nature de la gomme dans les flancs.The cutting is ensured by knives 24 which, interchangeable and reversible and which, as shown in FIG. figure 5 , are symmetrical double bevel and form an acute angle has of the order of 20 degrees. Each knife is formed at the end of a blade 54 which is pinched in a tool holder, not shown in detail. This arrangement makes it possible to obtain a regular cut, whatever the nature of the rubber in the sidewalls.

Dans une forme d'exécution, la lame 54a comporte quatre couteaux 24a, 24b, 24c et 24d formées par taillage à chacun de ses angles. Elle est montée dans son porte outil de manière à pouvoir être pivotée et retournée afin que, quand l'un des couteaux est usé, il peut être aisément remplacé par l'un des trois autres, tout en respectant ses angles de coupe.In one embodiment, the blade 54a has four knives 24a, 24b, 24c and 24d formed by cutting at each of its corners. It is mounted in its tool holder so that it can be turned and turned so that when one of the knives is worn, it can be easily replaced by one of the other three, while respecting its cutting angles.

La figure 6 montre l'application avec deux lames comportant quatre couteaux au moment où les couteaux 24a vont pénétrer dans le pneumatique pivotant dans le sens de la flèche 55.The figure 6 shows the application with two blades having four knives at the moment when the knives 24a will enter the pivoting tire in the direction of the arrow 55.

Ce type de couteau réduit le temps d'arrêt de l'appareil pour le remplacement des couteaux et augmente la productivité.This type of knife reduces downtime for knife replacement and increases productivity.

Claims (8)

  1. A device for cutting tire sidewalls comprising, supported by a base:
    - a turntable (7) bearing sliding jaws (13) able to bear against the heels (8a) of the sidewalls of a tire (8) bearing against the turntable (7),
    - a stationary support (20) supporting an arm (22) parallel to the rotation axis X'X of the turntable (7), this arm (22) being able to be moved parallel to this axis by actuating means, between a released position of the tire and a working position,
    - slides (23) which, positioned on either side of the receiving zone of the tire (8) and each bearing a transverse knife (24), oriented toward the side wall (8c) of the tire, are mounted sliding on the arm (22) and each connected to actuating means (26 and 27) able to translate them on that arm, between a position separated from the tread (8b) and a close, end-of-travel cutting position, and
    - control means (12) governing the rotation of the turntable (7) and the movements in both directions, respectively, of the jaws (13), the arm (22) and the slides (24),
    characterized in that it comprises means (32) which, able to emit a laser beam (31) parallel to the rotation axis X'X of the turntable (7) and positioned above the knives (24), are associated with detecting means (35) coming into play when the arm (22) is brought closer to the tread (8b) of the tire, to indicate to the control means (12) that the laser beam (31) has been broken by this tread, while the control means (12) comprise timing means (40) delaying the power supply of the actuating means (26 and 27) acting on the approach of the slides (23), so that the knives (24) only penetrate the sidewalls (8c) of the tire when they are below its tread (8b).
  2. The device for cutting tire sidewalls according to claim 1, characterized in that the control means (12) are made up of a single automaton governing all functions of the apparatus.
  3. The device for cutting tire sidewalls according to claims 1 and 2 together, characterized in that the means (25) for moving the arm (22) in both directions on the support (20), as well as the means (26, 27) for moving the slides (23) on the arm (22), are made up of hydraulic jacks whereof the control solenoid valves (25a, 26a and 27a) are controlled by the automaton (12).
  4. The device for cutting tire sidewalls according to claims 1 and 2 together, characterized in that it is positioned in a cabin whereof the access door (5) is equipped with a contact (42) for closing and triggering the cycle.
  5. The device for cutting tire sidewalls according to claim 1, characterized in that each of the knives (24) has a symmetrical double bevel and forms an acute angle a of approximately 20 degrees.
  6. The device for cutting tire sidewalls according to claims 1 and 5, characterized in that each knife (24a, 24b, 24c and 24d) is formed by trimming in one of the four corners of a blade (54a), mounted in its tool holder (23) with the possibility of pivoting and turning over to give each knife a position respecting its cutting angles.
  7. The device for cutting tire sidewalls according to claim 1, characterized in that one of the slides (23) bears a sensor (38) detecting the proximity of the sidewall (8c) of the tire.
  8. The device for cutting tire sidewalls according to claim 1, characterized in that it comprises a sensor (36) detecting the presence of a tire on the turntable (7).
EP14152216.9A 2013-01-23 2014-01-22 Apparatus for cutting tyre walls Not-in-force EP2764961B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1350571A FR3001179B1 (en) 2013-01-23 2013-01-23 APPARATUS FOR DYING THE FLANKS OF TIRES

Publications (2)

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EP2764961A1 EP2764961A1 (en) 2014-08-13
EP2764961B1 true EP2764961B1 (en) 2016-04-27

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EP (1) EP2764961B1 (en)
FR (1) FR3001179B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015162443A1 (en) * 2014-04-23 2015-10-29 Tyre Recycling Solutions Sa Apparatus for cutting the sidewalls of tyres
CH712201B1 (en) * 2016-03-10 2020-09-30 Tyre Recycling Solutions Sa Tire cutting device.
CN108437285A (en) * 2018-04-26 2018-08-24 遵义永航再生资源利用有限公司 A kind of waste tire ring cutting device
CN109866364B (en) * 2019-04-09 2021-04-06 马鞍山市威利坚机械科技有限公司 Tire trimming and shearing knife
CN110815652B (en) * 2019-11-28 2021-08-24 合肥智慧龙机械设计有限公司 Waste tire recycling and cutting machine
CN112045896A (en) * 2020-08-24 2020-12-08 陈琳 Waste tire cutting and recycling device
CN113021687B (en) * 2021-03-31 2022-08-23 鹰潭余江区顺用科技有限公司 Cutting mechanism for recycling waste tires

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6884374A (en) 1973-09-10 1975-11-13 Glenn G A Improvements relating to tyre disposal
DE4200949C2 (en) 1992-01-16 1994-09-01 Kurt Seume Spezialmaschinenbau Device for dismantling used motor vehicle tires
US5551325A (en) * 1994-10-13 1996-09-03 Schutt; Donald Tire cutting machine
AU5185398A (en) 1996-12-04 1998-06-29 James S Pincott Process and apparatus for making crumb rubber from scrap tyres
FR2780675B1 (en) * 1998-07-01 2003-12-19 Claude Choron TIRE CUTTING MACHINE
CN101652518B (en) * 2007-03-29 2011-09-14 米其林技术公司 Retread tire buffing with multiple response curves

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FR3001179B1 (en) 2015-01-23
EP2764961A1 (en) 2014-08-13
FR3001179A1 (en) 2014-07-25

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