EP3426448B1 - Device for cutting tyres - Google Patents

Device for cutting tyres Download PDF

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Publication number
EP3426448B1
EP3426448B1 EP17712840.2A EP17712840A EP3426448B1 EP 3426448 B1 EP3426448 B1 EP 3426448B1 EP 17712840 A EP17712840 A EP 17712840A EP 3426448 B1 EP3426448 B1 EP 3426448B1
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EP
European Patent Office
Prior art keywords
tire
tread
cutting
cut
received
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.)
Active
Application number
EP17712840.2A
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German (de)
French (fr)
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EP3426448A1 (en
Inventor
Staffan AHLGREN
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.)
Tyre Recycling Solutions SA
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Tyre Recycling Solutions SA
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Publication date
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Publication of EP3426448A1 publication Critical patent/EP3426448A1/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
    • 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
    • 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
    • B26D1/02—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 stationary cutting member
    • B26D1/03—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 stationary cutting member with a plurality of cutting members
    • 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
    • B26D1/06—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 wherein the cutting member reciprocates
    • 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
    • B26D1/06—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 wherein the cutting member reciprocates
    • B26D1/10—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 wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • 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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/14—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/18—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • 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
    • B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus

Definitions

  • the present invention relates to an apparatus for cutting tires.
  • the present invention consists of an apparatus for cutting tires of the type comprising a tread, sidewalls and heels so as to cut the sidewalls and cut the tread in order to reduce the size of a used tire and to facilitate the subsequent recovery of its components, but also storage and transport.
  • Equipment includes a rotating tire holder which can be operated to detachably hold a tire, a motor arrangement which can be operated to rotate the tire holder, a first cutting arrangement which can be made operating, in use, to separate the sidewall portions of a tire from the tread portion and a second cutting arrangement which can be operated to cut the tread portion of the tire to form a strip.
  • the disadvantage of this embodiment is that the tire is held by its sidewalls and that the cutting of the sidewalls which is carried out on either side of the tread is not always uniform and of good quality.
  • 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 on each side as in the documents - DE4200949 -and WO98 / 24607 .
  • These devices include means for holding and positioning of the tire in space and of the means ensuring its rotational drive to obtain the cutting movement.
  • the device WO2015 / 162443 further comprises means which, capable of emitting 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 when the arm is brought together in the direction of the strip tire tread, to signal to the control means that the laser beam is broken by this tread, while the control means comprise timing means delaying the supply of the actuating means acting on the bringing together of the sliders so that the knives only enter the sidewalls of the tire when they are below its tread.
  • the object of the invention is to remedy the aforementioned drawback by proposing an apparatus which cuts the sides in a uniform manner.
  • the device for cutting the tread of a tire to be cut when said tread is separated from its sidewalls, comprises an upper arm and a lower arm, the upper or lower arm carrying one of its ends, a pair of coaxial discs spaced from each other.
  • the other upper or lower arm carries an essentially circular blade arranged between the discs.
  • the cutting device slides to cut transversely the tread of a tire to be cut when said tread is separated from its sidewalls.
  • the essentially circular blade is completely circular and preferably knurled on the edge when it is bevelled.
  • the essentially circular blade has several radii of curvature.
  • the essentially circular blade is bevelled.
  • the upper arm and the lower arm have an elongated shape, the length of which is at least equal to the width of the tread of a tire to be cut.
  • the command is constituted by a single automaton governing all the functions of the device.
  • the reception area includes blocking elements on either side of a tire received in the device and are arranged so as to slide horizontally to approach each other. and catch a tire received in the device.
  • the blocking elements are cylinders, free to rotate about their longitudinal axis, coming into contact with the sidewalls of a tire to be cut so as to rotate in synchronization with the tire when it is driven by at least one of the rollers of the pair of drive rollers.
  • the device comprises a cover for at least partially enclosing the device with, if necessary, a tire to be cut inside the device, and at least one sensor for detecting the opening of the cover and interrupting a cycle. cutting.
  • the detector able to detect a central area of the tire emits a laser beam.
  • the lateral holding means of a tire received in the device make it possible to lock in position tires whose internal diameter of the beads varies from 30 centimeters to 60 centimeters.
  • the device comprises a sensor for detecting the presence of a tire to be cut on the reception area.
  • the cutting device arranged on the chassis comprises means for catching a tread arranged to hang the tread during the transverse cutting of the tread.
  • the invention also relates to a method of cutting a tire using the above device.
  • an assembled tire cutting device comprises an open sliding protective cover 36, making it possible to view all of the elements allowing the cutting of tires.
  • the pedal 9 makes it possible to start a cutting cycle.
  • the device is mounted without its protective cover 36.
  • the device comprises a frame 1 surrounding a reception area 2 receiving a tire 31 ready to be cut.
  • the device as illustrated is not in a normal operating phase because the tire 31 is not maintained by the lateral support means 5, 6 ( figure 6 ).
  • the tire 31 is placed between cylindrical rollers 12 which are free to rotate about their longitudinal axis.
  • the reception area 2 slides vertically and is in the high position for a future cutting operation while when loading the tire 31 in the reception area 2, the latter is in the low position to facilitate the handling operation carried out by an operator for arranging the tires 31 to be cut in the reception area.
  • a device 8 for cutting a tread of the tire 31, when the tread is separated from its sidewalls, is arranged on the chassis 1, sliding, so as to cut the tread transversely.
  • the section view of the tire 31 makes it possible to view the four parts of the tire 31, namely the sidewalls 32, the tread 33, the bead 34, and the interior 35 of the tread.
  • the chassis 1 is composed of a trunk 25 in which all the electrical part, the adjustment block or even a supervision tool can be integrated.
  • the chassis 1 also comprises two first horizontal bars 22 located on the upper part of the chassis 1, in particular allowing the fixing of two support structures 3 ′, 3 "mounted above and on either side of the reception area 2 ( figure 5 and 6 ).
  • Two vertical bars 23 located below the first two horizontal bars 22 allowing the fixing of the reception area 2 ( figure 5 ).
  • two second horizontal bars 24 allowing the fixing of the cutting device 8 ( figure 9 ).
  • the reception area 2 intended to receive a tire to be cut from the chassis comprises a pair of horizontal drive rollers 10, 11 of a tire received in the reception area 2 is placed on the rollers 10, 11
  • the reception area 2 is composed of a frame 30 making it possible to fix a first motor 17 which rotates one of the two rollers 10, 11 thus driving the tire to be cut.
  • These shoes 13 are fixed to a first guide rail 14 thus making it possible to adjust the maintenance of the tire according to the size of said tire.
  • the frame 30 is fixed in turn to two second vertical guide rails 16 thus making it possible to vertically adjust the height of the reception area 2 along a support plate 15 which is in turn fixed to the two vertical bars of the frame.
  • the tire cutter has two support structures 3 ', 3 "mounted above and on either side of the reception area.
  • the two support structures 3', 3" are carried by a second support plate 26, fixed to the first two horizontal bars 22 located on the upper part of the chassis 1 ( figure 4 ).
  • This second support plate 26 carries two fourth guide rails 27 making it possible to horizontally move the two support structures 3 ′, 3 ".
  • This horizontal movement is triggered by information given by a laser beam emitted by a device carried by the structure of support 3 ', 3 ". This laser beam is parallel to the tread of a tire to be cut.
  • the two support structures 3 ′, 3 ′′ carry lateral holding means 5, 6 composed on the one hand of a part 5 comprising two arms 37 as well as two rollers 38 allowing the interior of the tread to be held 35 of the tire to be cut ( figure 3 ), and on the other hand a jaw 6 allowing the heel of the tire to be cut to be maintained.
  • Bit 6 ( figure 7 ) slides vertically along the support structures 3 ', 3 "in order to maintain the bead of the tire to be cut according to the size of the latter.
  • the jaw 6 and the part 5 are diametrically opposite with respect to the internal circumference of a tire
  • the jaws 6 and the part 5 allow the tires 31 to be cut to be locked in position, the internal diameter of the beads varying from 30 centimeters to 60 centimeters.
  • Blades 7 ( figure 8 ), arranged on each support structure 3 ', 3 ", when they are in the working position, penetrate into the sidewalls of a tire received between the two branches 37 so as to stabilize the cutting area.
  • the blades 7 are arranged between the two branches 37 of the part 5.
  • An advantage of using the jaws 6 and the part 5 is that the device adapts to the dimensions of the tires to be cut, both on the inside diameter of the beads and on the tread thickness which varies from one pneumatic to the other and can be between 6 and 35 millimeters.
  • part 5, comprising two branches 37 as well as two rollers 38 allowing the interior of the tread to be held, makes it possible to determine with precision the position of the tread of the tire to be cut and thus to prevent the blade 7 sinks into the tread.
  • the jaw 6 is fixed on each support structure thus making it possible to slide vertically along each support structure 3 ', 3 "in order to maintain the bead of the tire to be cut.
  • the device for cutting the tread of a tire to be cut, when said tread is separated from its sidewalls is composed of two arms 39, 40.
  • the cutting means 8 is arranged on a third plate support 28 for its part composed of two third horizontal rails 19 so as to be able to move horizontally along the two third rails 19.
  • the upper arm 39 carries at one of its ends, a pair of coaxial discs 20 spaced apart from one 'the other, the other arm, lower 40, carrying an essentially circular blade 21 arranged between the discs 20.
  • the cutting device 8 slides to cut the tread transversely when said tread is separated from its sides.
  • a second motor 18 rotates the circular blade 21 thus making it possible to cut the tread once the sidewalls of the tire have been cut during the first cutting phase.
  • the essentially circular blade 21 has several radii of curvature and is bevelled.
  • the device is arranged so that each blade 7, 21 is lubricated at a defined interval to improve cutting.
  • the device preferably comprises, under the chassis 1, a receptacle for recovering water and other liquids which can accumulate in the tires during their storage and which escapes during a cutting operation.
  • the device according to the present invention makes it possible to cut the sidewalls of tires with a precise and uniform cut, to cut the tread and to minimize handling operations for better productivity.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Processing Of Solid Wastes (AREA)
  • Tires In General (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

La présente invention se rapporte à un appareil à découper les pneumatiques. En particulier, la présente invention consiste en un appareil à découper des pneumatiques du type comportant une bande de roulement, des flancs et des talons de manière à découper les flancs et sectionner la bande de roulement dans le but de réduire l'encombrement d'un pneumatique usagé et de faciliter la récupération ultérieure de ses composants, mais aussi le stockage et le transport.The present invention relates to an apparatus for cutting tires. In particular, the present invention consists of an apparatus for cutting tires of the type comprising a tread, sidewalls and heels so as to cut the sidewalls and cut the tread in order to reduce the size of a used tire and to facilitate the subsequent recovery of its components, but also storage and transport.

En effet, en raison de leur forme et de leur configuration, les pneumatiques usagés de véhicules ne permettent pas d'optimiser leur stockage et leur transport. L'espace de vide élevé d'un pneumatique implique une perte de l'espace utile de transport et de stockage.Indeed, due to their shape and configuration, used vehicle tires do not allow their storage and transport to be optimized. The high vacuum space of a tire implies a loss of useful transport and storage space.

Il est connu de l'état de la technique des appareils assurant le découpage des flancs et le sectionnement de la bande de roulement d'un pneumatique. On connaît ainsi par exemple WO2012059719 qui décrit un équipement pour traiter un pneu de véhicule en découpant le pneu en portions. L'équipement comprend un support rotatif de pneu qu'on peut faire fonctionner pour retenir de façon amovible un pneu, un agencement moteur qu'on peut faire fonctionner pour faire tourner le support de pneu, un premier agencement de coupe qu'on peut faire fonctionner, en service, pour séparer les parties de flanc d'un pneu de la partie de bande de roulement et un second agencement de coupe qu'on peut faire fonctionner pour découper la partie de bande de roulement du pneu pour en faire une bande.It is known from the state of the art of devices ensuring the cutting of the sidewalls and the cutting of the tread of a tire. So we know for example WO2012059719 which describes equipment for treating a vehicle tire by cutting the tire into portions. Equipment includes a rotating tire holder which can be operated to detachably hold a tire, a motor arrangement which can be operated to rotate the tire holder, a first cutting arrangement which can be made operating, in use, to separate the sidewall portions of a tire from the tread portion and a second cutting arrangement which can be operated to cut the tread portion of the tire to form a strip.

L'inconvénient de cette réalisation est que le pneu est maintenu par ses flancs et que le découpage des flancs qui se fait de part et d'autre de la bande de roulement n'est pas toujours uniforme et de bonne qualité.The disadvantage of this embodiment is that the tire is held by its sidewalls and that the cutting of the sidewalls which is carried out on either side of the tread is not always uniform and of good quality.

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 côté 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 on each side as in the documents - DE4200949 -and WO98 / 24607 . These devices include means for holding and positioning of the tire in space and of the means ensuring its rotational drive to obtain the cutting movement.

FR2780675 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.
FR2780675 describes a simplified device intended for craftsmen and small businesses. This device includes, carried by a base:
  • a rotary plate carrying sliding jaws capable of coming into abutment against the beads of the sidewalls of a tire in abutment 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 moved parallel to this axis by actuation means, between a position for releasing the tire and a working position,
  • spaced slides which, arranged on either side of the reception area of the tire and each carrying a transverse knife, oriented towards the sidewall of the tire, are slidably mounted on the arm and each connected to means of actuation capable of moving them in translation on this arm, between a spaced apart position for disengaging the tread and a close position at the end of the sectioning stroke,
  • and control means governing the rotation of the plate and the movements in both directions, of the support, of the arm and of the slides, therefore of the knives.

WO2015/162443 divulgue un appareil à découper les flancs des pneumatiques, d'un type compris dans la partie introductive de la revendication 1, comprenant,

  • un châssis,
  • une zone d'accueil destinée à recevoir un pneumatique à découper dans le châssis,
  • des moyens de maintien latéraux d'un pneumatique reçu dans la zone d'accueil,
  • des lames agencées transversalement, orientées vers un flanc d'un pneumatique reçu dans la zone d'accueil, lesdites lames étant montés coulissantes entre une position écartée de dégagement de la bande de roulement et une position de travail où elles pénètrent dans le flanc d'un pneumatique afin de séparer la bande de roulement de ses flancs, et
  • une automate de commande régissant le coulissage desdites lames entre une position écartée et une position de travail afin que les lames ne pénètrent dans les flancs d'un pneumatique reçu dans l'appareil que lorsqu'elles sont au-dessus de sa bande de roulement.
WO2015 / 162443 discloses an apparatus for cutting the sidewalls of tires, of a type included in the introductory part of claim 1, comprising,
  • a chassis,
  • a reception area intended to receive a tire to be cut out from the chassis,
  • lateral holding means for a tire received in the reception area,
  • blades arranged transversely, oriented towards a sidewall of a tire received in the reception area, said blades being slidably mounted between a spaced apart position for clearing the tread and a working position where they penetrate into the sidewall a pneumatic in order to separate the tread from its sidewalls, and
  • a control automaton governing the sliding of said blades between a separated position and a working position so that the blades do not penetrate the sidewalls of a tire received in the device until they are above its tread.

L'appareil de WO2015/162443 comporte en outre des moyens qui, aptes à émettre un faisceau 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, pour signaler aux moyens de commande a rupture du faisceau laser par cette bande de roulement, tandis que les moyens de commande comprennent des moyens de temporisation retardant l'alimentation des moyens d'actionnement agissant sur le rapprochement des coulisseaux afin que les couteaux ne pénètrent dans les flancs du pneumatique que lorsqu'ils sont au-dessous de sa bande de roulement.The device WO2015 / 162443 further comprises means which, capable of emitting 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 when the arm is brought together in the direction of the strip tire tread, to signal to the control means that the laser beam is broken by this tread, while the control means comprise timing means delaying the supply of the actuating means acting on the bringing together of the sliders so that the knives only enter the sidewalls of the tire when they are below its tread.

L'objet de l'invention est de remédier l'inconvénient précité en proposant un appareil qui découpe les flancs de manière uniforme.The object of the invention is to remedy the aforementioned drawback by proposing an apparatus which cuts the sides in a uniform manner.

Conformément à l'invention, un appareil à découper des pneumatiques du type précité est caractérisé en ce que :

  • ladite zone d'accueil comporte une paire de rouleaux d'entrainement d'un pneumatique placé sur les rouleaux d'entrainement dans la zone d'accueil,
  • deux structures de support sont montées au-dessus et de part et d'autre de la zone d'accueil,
  • lesdits moyens de maintien sont montés sur au moins une des deux structures de support.
  • un détecteur, notamment un détecteur optique, apte à détecter une zone centrale vide d'un pneumatique est reçu dans la zone d'accueil, compris entre le diamètre intérieur des talons du pneumatique, ledit détecteur étant agencé sur au moins une des deux structures de support.
  • les lames sont montées sur les structures de support.
  • l'automate de commande régit aussi la rotation d'au moins un rouleau de la paire de rouleaux, et
  • les moyens de maintien latéraux comportent :
  • un mors coulissant apte à s'appuyer contre le talon d'un pneumatique reçu dans l'appareil, et
  • une pièce à deux branches portant chacune un galet agencée pour s'insérer à l'intérieur d'un pneu reçu dans l'appareil et dont les deux branches sont aptes à venir en contact avec une surface intérieure de la bande de roulement du pneu.
  • le mors et la pièce sont diamétralement opposés par rapport à la circonférence interne d'un pneumatique reçu dans l'appareil, et
  • les lames, lorsqu'elles sont en position de travail, pénètrent dans les flancs d'un pneumatique lorsque les lames sont à proximité de ou reçues entre les deux branches de manière à stabiliser la zone de découpe.
According to the invention, an apparatus for cutting tires of the aforementioned type is characterized in that:
  • said reception area comprises a pair of drive rollers for a tire placed on the drive rollers in the reception area,
  • two support structures are mounted above and on either side of the reception area,
  • said holding means are mounted on at least one of the two support structures.
  • a detector, in particular an optical detector, capable of detecting an empty central area of a tire is received in the reception area, comprised between the internal diameter of the beads of the tire, said detector being arranged on at least one of the two structures support.
  • the blades are mounted on the support structures.
  • the control machine also controls the rotation of at least one roller of the pair of rollers, and
  • the lateral holding means comprise:
  • a sliding jaw capable of pressing against the bead of a tire received in the device, and
  • a part with two branches each carrying a roller arranged to be inserted inside a tire received in the device and the two branches of which are capable of coming into contact with an interior surface of the tread of the tire.
  • the jaw and the part are diametrically opposite with respect to the internal circumference of a tire received in the device, and
  • the blades, when they are in the working position, penetrate into the sidewalls of a tire when the blades are close to or received between the two branches so as to stabilize the cutting area.

Dans une forme d'exécution, le dispositif de découpe de la bande de roulement d'un pneu à découper, lorsque ladite bande de roulement est séparée de ses flancs, comporte un bras supérieur et un bras inférieur, le bras supérieur ou inférieur portant à une de ses extrémités, une paire de disques coaxiaux espacés l'un de l'autre. L'autre bras supérieur ou inférieur porte une lame essentiellement circulaire agencée entre les disques. Le dispositif de découpe coulisse pour venir découper transversalement la bande de roulement d'un pneu à découper lorsque ladite bande de roulement est séparée de ses flancs.In one embodiment, the device for cutting the tread of a tire to be cut, when said tread is separated from its sidewalls, comprises an upper arm and a lower arm, the upper or lower arm carrying one of its ends, a pair of coaxial discs spaced from each other. The other upper or lower arm carries an essentially circular blade arranged between the discs. The cutting device slides to cut transversely the tread of a tire to be cut when said tread is separated from its sidewalls.

Dans une forme d'exécution, la lame essentiellement circulaire est complètement circulaire et de préférence moletée sur la tranche lorsqu'elle est biseautée.In one embodiment, the essentially circular blade is completely circular and preferably knurled on the edge when it is bevelled.

Dans une variante, la lame essentiellement circulaire comporte plusieurs rayons de courbure.Alternatively, the essentially circular blade has several radii of curvature.

De préférence, la lame essentiellement circulaire est biseautée.Preferably, the essentially circular blade is bevelled.

Dans une forme d'exécution, le bras supérieur et le bras inférieur ont une forme allongée dont la longueur est au moins égale à la largeur de la bande de roulement d'un pneumatique à découper.In one embodiment, the upper arm and the lower arm have an elongated shape, the length of which is at least equal to the width of the tread of a tire to be cut.

Dans une forme d'exécution préférentielle, la commande est constituée par un unique automate régissant toutes les fonctions de l'appareil.In a preferred embodiment, the command is constituted by a single automaton governing all the functions of the device.

Dans une forme d'exécution, la zone d'accueil comporte des éléments de blocage de part et d'autre d'un pneumatique reçu dans l'appareil et sont agencés de manière à coulisser horizontalement pour se rapprocher l'un de l'autre et coincer un pneumatique reçu dans l'appareil.In one embodiment, the reception area includes blocking elements on either side of a tire received in the device and are arranged so as to slide horizontally to approach each other. and catch a tire received in the device.

Selon cette même forme d'exécution, les éléments de blocage sont des cylindres, libres en rotation autour de leur axe longitudinal, entrant en contact avec les flancs d'un pneumatique à découper de manière à tourner de manière synchronisée avec le pneumatique lorsqu'il est entrainé par au moins un des rouleaux de la paire de rouleaux d'entrainement.According to this same embodiment, the blocking elements are cylinders, free to rotate about their longitudinal axis, coming into contact with the sidewalls of a tire to be cut so as to rotate in synchronization with the tire when it is driven by at least one of the rollers of the pair of drive rollers.

De préférence, l'appareil comporte un capot pour renfermer au moins partiellement l'appareil avec le cas échéant un pneumatique à découper à l'intérieur de l'appareil, et au moins un capteur pour détecter l'ouverture du capot et interrompre un cycle de découpe.Preferably, the device comprises a cover for at least partially enclosing the device with, if necessary, a tire to be cut inside the device, and at least one sensor for detecting the opening of the cover and interrupting a cycle. cutting.

Dans une forme d'exécution, le détecteur apte à détecter une zone centrale du pneumatique émet un faisceau laser.In one embodiment, the detector able to detect a central area of the tire emits a laser beam.

De préférence, les moyens de maintien latéraux d'un pneumatique reçu dans l'appareil permettent de bloquer en position des pneumatiques dont le diamètre intérieur des talons varie de 30 centimètres à 60 centimètres.Preferably, the lateral holding means of a tire received in the device make it possible to lock in position tires whose internal diameter of the beads varies from 30 centimeters to 60 centimeters.

Dans une forme d'exécution, l'appareil comprend un capteur de détection de la présence d'un pneumatique à découper sur la zone d'accueil.In one embodiment, the device comprises a sensor for detecting the presence of a tire to be cut on the reception area.

Dans une forme d'exécution, le dispositif de découpe agencé sur le châssis comporte des moyens de happement d'une bande de roulement agencés pour accrocher la bande de roulement pendant la découpe transversale de la bande de roulement.In one embodiment, the cutting device arranged on the chassis comprises means for catching a tread arranged to hang the tread during the transverse cutting of the tread.

L'invention concerne aussi un procédé de découpage d'un pneumatique utilisant l'appareil ci-dessus.The invention also relates to a method of cutting a tire using the above device.

Les caractéristiques de l'invention apparaitront plus clairement à la lecture de la description donnée uniquement à titre d'exemple, nullement limitative en se référant aux figures schématiques, dans lesquelles :

  • La figure 1 représente une vue de perspective en transparence d'un appareil à découper des pneumatiques, un capot de protection de l'appareil étant ouvert ;
  • La figure 2 représente une vue de face de l'appareil à découper les pneumatiques, sans son capot de protection, comportant un pneumatique prêt à être découpé ;
  • La figure 3 représente une vue de coupe d'un pneumatique ;
  • La figure 4 représente une vue de perspective d'un châssis de l'appareil ;
  • La figure 5 représente une vue de perspective d'une zone d'accueil agencée pour recevoir un pneumatique ;
  • La figure 6 représente une vue de perspective des moyens de maintien latéral du pneumatique pendant une découpe ;
  • La figure 7 représente une vue en perspective d'un moyen de maintien du talon du pneumatique ;
  • La figure 8 représente une vue en perspective d'un dispositif de découpe des flancs des pneumatiques ;
  • La figure 9 représente une vue de perspective d'un moyen de découpe d'une bande de roulement du pneumatique et d'une plaque de support sur laquelle le moyen de découpe coulisse;
  • La figure 10 représente une vue de côté du moyen de découpe d'une bande de roulement du pneumatique ;
  • La figure 11 représente une vue de face du moyen de découpe d'une bande de roulement du pneumatique ; et
  • La figure 12 représente une vue partielle du moyen de découpe selon une autre forme d'exécution.
The characteristics of the invention will appear more clearly on reading the description given solely by way of example, in no way limiting with reference to the schematic figures, in which:
  • The figure 1 shows a perspective view in transparency of an apparatus for cutting tires, a protective cover of the apparatus being open;
  • The figure 2 shows a front view of the tire cutting device, without its protective cover, comprising a tire ready to be cut;
  • The figure 3 represents a sectional view of a tire;
  • The figure 4 shows a perspective view of a chassis of the apparatus;
  • The figure 5 shows a perspective view of a reception area arranged to receive a tire;
  • The figure 6 shows a perspective view of the lateral holding means of the tire during cutting;
  • The figure 7 shows a perspective view of a means for holding the bead of the tire;
  • The figure 8 shows a perspective view of a device for cutting the sidewalls of tires;
  • The figure 9 shows a perspective view of a means for cutting a tire tread and a support plate on which the cutting means slides;
  • The figure 10 shows a side view of the means for cutting a tire tread;
  • The figure 11 shows a front view of the means for cutting a tire tread; and
  • The figure 12 shows a partial view of the cutting means according to another embodiment.

Comme illustré à la figure 1, un appareil assemblé à découper des pneumatiques comporte un capot de protection 36 coulissant ouvert, permettant de visualiser l'ensemble des éléments permettant le découpage des pneumatiques. Dans cet exemple, la pédale 9 permet de lancer un cycle de découpage.As illustrated in figure 1 , an assembled tire cutting device comprises an open sliding protective cover 36, making it possible to view all of the elements allowing the cutting of tires. In this example, the pedal 9 makes it possible to start a cutting cycle.

Comme illustré à la figure 2, l'appareil est monté sans son capot de protection 36. L'appareil comprend un châssis 1 entourant une zone d'accueil 2 recevant un pneumatique 31 prêt à être découpé. L'appareil tel qu'illustré n'est pas dans une phase de fonctionnement normal car le pneumatique 31 n'est pas maintenu par les moyens de maintiens latéraux 5, 6 (figure 6). Le pneumatique 31 est placé entre des rouleaux cylindriques 12 libre en rotation autour de leur axe longitudinal. La zone d'accueil 2 coulisse verticalement et est en positon haute pour une future opération de découpe alors que lors du chargement du pneumatique 31 dans la zone d'accueil 2, cette dernière est en position basse pour faciliter l'opération de manutention effectuée par un opérateur pour agencer les pneumatiques 31 à découper dans la zone d'accueil. Un dispositif de découpe 8 d'une bande de roulement du pneumatique 31, lorsque la bande de roulement est séparée de ses flancs, est agencé, sur le châssis 1, coulissant, pour venir découper la bande de roulement transversalement.As illustrated in figure 2 , the device is mounted without its protective cover 36. The device comprises a frame 1 surrounding a reception area 2 receiving a tire 31 ready to be cut. The device as illustrated is not in a normal operating phase because the tire 31 is not maintained by the lateral support means 5, 6 ( figure 6 ). The tire 31 is placed between cylindrical rollers 12 which are free to rotate about their longitudinal axis. The reception area 2 slides vertically and is in the high position for a future cutting operation while when loading the tire 31 in the reception area 2, the latter is in the low position to facilitate the handling operation carried out by an operator for arranging the tires 31 to be cut in the reception area. A device 8 for cutting a tread of the tire 31, when the tread is separated from its sidewalls, is arranged on the chassis 1, sliding, so as to cut the tread transversely.

Comme illustré à la figure 3, la vue de coupe du pneumatique 31 permet de visualiser les quatre parties du pneumatique 31, à savoir les flancs 32, la bande de roulement 33, le talon 34, et l'intérieur 35 de la bande de roulement.As illustrated in figure 3 , the section view of the tire 31 makes it possible to view the four parts of the tire 31, namely the sidewalls 32, the tread 33, the bead 34, and the interior 35 of the tread.

Comme illustré à la figure 4, le châssis 1 est composé d'un coffre 25 dans lequel peut être intégrée toute la partie électrique, le bloc de réglage ou encore un outil de supervision. Le châssis 1 comporte en outre deux premières barres horizontales 22 situées sur la partie haute du châssis 1 permettant notamment la fixation de deux structures de support 3', 3" montées au-dessus et de part et d'autre de la zone d'accueil 2 (figure 5 et 6). Deux barres verticales 23 situées en dessous des deux premières barres horizontales 22 permettant la fixation de la zone d'accueil 2 (figure 5). Enfin, deux secondes barres horizontales 24 permettant la fixation du dispositif de découpe 8 (figure 9).As illustrated in figure 4 , the chassis 1 is composed of a trunk 25 in which all the electrical part, the adjustment block or even a supervision tool can be integrated. The chassis 1 also comprises two first horizontal bars 22 located on the upper part of the chassis 1, in particular allowing the fixing of two support structures 3 ′, 3 "mounted above and on either side of the reception area 2 ( figure 5 and 6 ). Two vertical bars 23 located below the first two horizontal bars 22 allowing the fixing of the reception area 2 ( figure 5 ). Finally, two second horizontal bars 24 allowing the fixing of the cutting device 8 ( figure 9 ).

Comme illustré à la figure 5, la zone d'accueil 2 destinée à recevoir un pneumatique à découper dans le châssis, comporte une paire de rouleaux d'entrainement horizontaux 10, 11 d'un pneumatique reçu dans la zone d'accueil 2 est placé sur les rouleaux 10, 11. La zone d'accueil 2 est composée d'un cadre 30 permettant de fixer un premier moteur 17 qui entraîne en rotation l'un des deux rouleaux 10, 11 entraînant ainsi le pneumatique à découper. Quatre sabots 13 sur lesquels sont fixés respectivement un cylindre 12 libre en rotation autour de son axe longitudinal, permettant de coincer les flancs des pneumatiques à découper. Ces sabots 13 sont fixés à un premier rail de guidage 14 permettant ainsi d'ajuster le maintien du pneumatique selon la taille dudit pneumatique. Le cadre 30 est fixé quant à lui à deux seconds rails de guidage verticaux 16 permettant ainsi de régler verticalement la hauteur de la zone d'accueil 2 le long d'une plaque de support 15 qui est quant à elle fixée aux deux barres verticales du châssis.As illustrated in figure 5 , the reception area 2 intended to receive a tire to be cut from the chassis, comprises a pair of horizontal drive rollers 10, 11 of a tire received in the reception area 2 is placed on the rollers 10, 11 The reception area 2 is composed of a frame 30 making it possible to fix a first motor 17 which rotates one of the two rollers 10, 11 thus driving the tire to be cut. Four shoes 13 on which are fixed respectively a free cylinder 12 in rotation about its longitudinal axis, making it possible to wedge the sidewalls of the tires to be cut. These shoes 13 are fixed to a first guide rail 14 thus making it possible to adjust the maintenance of the tire according to the size of said tire. The frame 30 is fixed in turn to two second vertical guide rails 16 thus making it possible to vertically adjust the height of the reception area 2 along a support plate 15 which is in turn fixed to the two vertical bars of the frame.

Comme illustré à la figure 6, l'appareil à découper les pneus comporte deux structures de support 3', 3" montées au-dessus et de part et d'autre de la zone d'accueil. Les deux structures de support 3', 3" sont portées par une seconde plaque de support 26, fixée sur les deux premières barres horizontales 22 situées sur la partie haute du châssis 1 (figure 4). Cette seconde plaque de support 26 porte deux quatrièmes rails de guidage 27 permettant de déplacer horizontalement les deux structures de support 3', 3". Ce déplacement horizontal est déclenché par une information donnée par un rayon laser émis par un dispositif porté par la structure de support 3', 3". Ce rayon laser est parallèle à la bande de roulement d'un pneu à découper. Les deux structures de support 3', 3" portent des moyens de maintien latéraux 5, 6 composés d'une part d'une pièce 5 comportant deux branches 37 ainsi que deux galets 38 permettant le maintien de l'intérieur de la bande de roulement 35 du pneumatique à découper (figure 3), et d'autre part d'un mors 6 permettant le maintien du talon du pneumatique à découper. Le mors 6 (figure 7) coulisse verticalement le long des structures de support 3',3" afin de maintenir le talon du pneumatique à découper selon la taille de ce dernier. Le mors 6 et la pièce 5 sont diamétralement opposés par rapport à la circonférence interne d'un pneumatique reçu dans l'appareil. Les mors 6 et la pièce 5 permettent de bloquer en position des pneumatiques 31 à découper dont le diamètre intérieur des talons varie de 30 centimètres à 60 centimètres. Les lames 7 (figure 8), agencées sur chaque structure de support 3', 3", lorsqu'elles sont en position de travail, pénètrent dans les flancs d'un pneumatique reçu entre les deux branches 37 de manière à stabiliser la zone de découpe. Dans cet exemple, les lames 7 sont agencées entre les deux branches 37 de la pièce 5.As illustrated in figure 6 , the tire cutter has two support structures 3 ', 3 "mounted above and on either side of the reception area. The two support structures 3', 3" are carried by a second support plate 26, fixed to the first two horizontal bars 22 located on the upper part of the chassis 1 ( figure 4 ). This second support plate 26 carries two fourth guide rails 27 making it possible to horizontally move the two support structures 3 ′, 3 ". This horizontal movement is triggered by information given by a laser beam emitted by a device carried by the structure of support 3 ', 3 ". This laser beam is parallel to the tread of a tire to be cut. The two support structures 3 ′, 3 ″ carry lateral holding means 5, 6 composed on the one hand of a part 5 comprising two arms 37 as well as two rollers 38 allowing the interior of the tread to be held 35 of the tire to be cut ( figure 3 ), and on the other hand a jaw 6 allowing the heel of the tire to be cut to be maintained. Bit 6 ( figure 7 ) slides vertically along the support structures 3 ', 3 "in order to maintain the bead of the tire to be cut according to the size of the latter. The jaw 6 and the part 5 are diametrically opposite with respect to the internal circumference of a tire The jaws 6 and the part 5 allow the tires 31 to be cut to be locked in position, the internal diameter of the beads varying from 30 centimeters to 60 centimeters. Blades 7 ( figure 8 ), arranged on each support structure 3 ', 3 ", when they are in the working position, penetrate into the sidewalls of a tire received between the two branches 37 so as to stabilize the cutting area. In this example, the blades 7 are arranged between the two branches 37 of the part 5.

Un avantage de l'utilisation des mors 6 et la pièce 5 est que l'appareil s'adapte aux dimensions des pneumatiques devant être découpés, tant sur le diamètre intérieur des talons que sur l'épaisseur de bande de roulement qui varie d'un pneumatique à l'autre et peut être comprise entre 6 et 35 millimètres. En effet la pièce 5, comportant deux branches 37 ainsi que deux galets 38 permettant le maintien de l'intérieur de la bande de roulement, permet de déterminer avec précision la position de la bande de roulement du pneumatique à découper et ainsi éviter que la lame 7 s'enfonce dans la bande de roulement.An advantage of using the jaws 6 and the part 5 is that the device adapts to the dimensions of the tires to be cut, both on the inside diameter of the beads and on the tread thickness which varies from one pneumatic to the other and can be between 6 and 35 millimeters. Indeed, part 5, comprising two branches 37 as well as two rollers 38 allowing the interior of the tread to be held, makes it possible to determine with precision the position of the tread of the tire to be cut and thus to prevent the blade 7 sinks into the tread.

Comme illustré à la figure 7, le mors 6 est fixé sur chaque structure de support permettant ainsi de coulisser verticalement le long de chaque structure de support 3', 3" afin de maintenir le talon du pneumatique à découper.As illustrated in figure 7 , the jaw 6 is fixed on each support structure thus making it possible to slide vertically along each support structure 3 ', 3 "in order to maintain the bead of the tire to be cut.

Dans l'exemple illustré aux figures 9, 10 et 11, le dispositif de découpe 8 de la bande de roulement d'un pneu à découper, lorsque ladite bande de roulement est séparée de ses flancs, est composé de deux bras 39, 40. Le moyen de découpe 8 est agencé sur une troisième plaque de support 28 composée quant à elle de deux troisièmes rails horizontaux 19 de manière à pouvoir se déplacer horizontalement le long des deux troisième rails 19. Le bras supérieur 39 porte à une de ses extrémités, une paire de disques 20 coaxiaux espacés l'un de l'autre, l'autre bras, inférieur 40, portant une lame essentiellement circulaire 21 agencée entre les disques 20. Le dispositif de découpe 8 coulisse pour venir découper transversalement la bande de roulement lorsque ladite bande de roulement est séparée de ses flancs. Un second moteur 18, entraine en rotation la lame de forme circulaire 21 permettant ainsi de découper la bande de roulement une fois que les flancs du pneumatique ont été découpés lors de la première phase de découpe. Dans cet exemple, la lame essentiellement circulaire 21 comporte plusieurs rayons de courbure et est biseautée.In the example illustrated in figures 9 , 10 and 11 , the device for cutting the tread of a tire to be cut, when said tread is separated from its sidewalls, is composed of two arms 39, 40. The cutting means 8 is arranged on a third plate support 28 for its part composed of two third horizontal rails 19 so as to be able to move horizontally along the two third rails 19. The upper arm 39 carries at one of its ends, a pair of coaxial discs 20 spaced apart from one 'the other, the other arm, lower 40, carrying an essentially circular blade 21 arranged between the discs 20. The cutting device 8 slides to cut the tread transversely when said tread is separated from its sides. A second motor 18 rotates the circular blade 21 thus making it possible to cut the tread once the sidewalls of the tire have been cut during the first cutting phase. In this example, the essentially circular blade 21 has several radii of curvature and is bevelled.

Avantageusement, l'appareil est agencé de manière à ce que chaque lame 7, 21 est lubrifié à intervalle défini pour améliorer la découpe.Advantageously, the device is arranged so that each blade 7, 21 is lubricated at a defined interval to improve cutting.

Dans une forme d'exécution illustrée à la figure 12, pour l'accroche de la bande de roulement contre le bord de celle-ci, des moyens de happement ont été intégrés au dispositif de découpe 8 (figure 10). Dans cet exemple, la paire de disques 20 coaxiaux espacés l'un de l'autre et portés par le bras supérieur 39 (figure 10) comporte des moyens d'accroche 41, ici des roues dentées 41 disposées de part et d'autre de la paire de disques 20. Dans cet exemple, la bande de roulement 33 est poussée mécaniquement dans le sens de coupe contre le disque de coupe 21 depuis la paire de disques 20, qui elle-même est mise en rotation. Contrairement à l'exemple de précédent dans lequel la paire de disque de cisaillage n'est pas entrainée, cette fois-ci, la paire de disque de cisaillage 20 est mise en rotation de manière synchronisée avec la lame de coupe 21. Les deux roues dentées 41 disposées de part et d'autre des disques 20 sont solidaires avec lesdits disques 20 de manière à ce que lorsque la denture des roues dentées 41 mises en rotation vient frapper la bande de roulement, la denture crée un entraînement de la bande en direction du disque de coupe 21, dans le sens de coupe. Après avoir ouvert le capot de protection 36, l'opérateur pose le pneumatique 31 dans la zone d'accueil 2 sur les deux rouleaux 10, 11 et entre les quatre cylindres 12. La bande de roulement du pneumatique à découper vient en contact avec deux rouleaux 10, 11. A ce stade, la zone d'accueil 2 est en position basse de manière à faciliter la manutention. L'opérateur ferme ensuite le capot de protection 36 et appuie sur la pédale 9, ou sur toute autre commande tel un bouton poussoir, pour lancer un cycle de découpage. Le cycle de découpage comprend les étapes suivantes :

  • vérification de la présence d'un pneumatique par un capteur,
  • coinçage du pneumatique entre les cylindres 12,
  • remontée de la zone d'accueil 2 comportant le pneumatique par un déplacement vertical jusqu'à détection par le faisceau laser de la zone centrale, entre talons, du pneumatique à découper,
  • rapprochement des structures de supports 3', 3" par coulissage horizontal pour maintenir des talons du pneumatique par les mors 6 et l'intérieur de la bande de roulement par la pièce 5 et ses deux branches 37,
  • appui sur la partie interne 35 de la bande de roulement 33 par la pièce 5 à deux branches puis,
  • appui sur les talons 34 par le mors 6,
  • mise en rotation du pneumatique 31 par au moins un des rouleaux de la paire de rouleaux d'entrainement 10, 11,
  • découpe des flancs 32 du pneumatique par la lame 7 agencée sur chaque structure de support 3', 3",
  • optionnellement, écartement des deux structures de support 3',3" dont chaque mors 6 porte un flanc découpé,
  • descente de la zone d'accueil 2 comportant la bande roulement sans ses flancs jusqu'à ce que la bande de roulement soit face au dispositif de découpe 8,
  • découpe transversale de la bande de roulement 33 par coulissage horizontal du dispositif de découpe 8, puis retour du dispositif de découpe 8 à sa position initiale,
  • ouverture du capot de protection 36 par l'utilisateur pour récupération de la bande de roulement sectionnée sur les deux rouleaux 10, 11 et des flancs sur chacun des mors 6.
In an embodiment illustrated in figure 12 , for the attachment of the tread against the edge thereof, catching means have been integrated into the cutting device 8 ( figure 10 ). In this example, the pair of coaxial discs 20 spaced from one another and carried by the upper arm 39 ( figure 10 ) comprises hooking means 41, here toothed wheels 41 disposed on either side of the pair of discs 20. In this example, the tread 33 is mechanically pushed in the cutting direction against the cutting disc 21 from the pair of discs 20, which itself is rotated. Unlike the previous example in which the pair of shearing discs is not driven, this time the pair of shearing discs 20 are rotated in synchronism with the cutting blade 21. The two wheels toothed 41 arranged on either side of the discs 20 are integral with said discs 20 so that when the toothing of the toothed wheels 41 in rotation strikes the tread, the toothing creates a drive of the band in direction of the cutting disc 21, in the cutting direction. After opening the protective cover 36, the operator places the tire 31 in the reception area 2 on the two rollers 10, 11 and between the four cylinders 12. The tread of the tire to be cut comes into contact with two rollers 10, 11. At this stage, the reception area 2 is in the low position so as to facilitate handling. The operator then closes the protective cover 36 and presses the pedal 9, or any other command such as a push button, to initiate a cutting cycle. The cutting cycle includes the following stages:
  • verification of the presence of a tire by a sensor,
  • wedging of the tire between the cylinders 12,
  • ascent of the reception area 2 comprising the tire by a vertical displacement until detection by the laser beam of the central area, between beads, of the tire to be cut,
  • approximation of the support structures 3 ′, 3 "by horizontal sliding to maintain the beads of the tire by the jaws 6 and the inside of the tread by the part 5 and its two branches 37,
  • support on the internal part 35 of the tread 33 by the part 5 with two branches then,
  • support on the heels 34 by the jaw 6,
  • rotation of the tire 31 by at least one of the rollers of the pair of drive rollers 10, 11,
  • cutting of the sidewalls 32 of the tire by the blade 7 arranged on each support structure 3 ′, 3 ",
  • optionally, spacing of the two support structures 3 ′, 3 ", each jaw 6 of which carries a cut edge,
  • lowering of the reception area 2 comprising the tread without its sides until the tread is facing the cutting device 8,
  • transverse cutting of the tread 33 by horizontal sliding of the cutting device 8, then return of the cutting device 8 to its initial position,
  • opening of the protective cover 36 by the user for recovery of the tread sectioned on the two rollers 10, 11 and of the sides on each of the jaws 6.

L'appareil comprend de préférence, sous le châssis 1, un réceptacle de récupération des eaux et autres liquides pouvant s'accumuler dans les pneumatiques lors de leur stockage et qui s'échappe lors d'une opération de découpe.The device preferably comprises, under the chassis 1, a receptacle for recovering water and other liquids which can accumulate in the tires during their storage and which escapes during a cutting operation.

Les déplacements qui sont décrits ci-dessus comme étant verticaux, peuvent aussi être horizontaux et inversement ou inclinés.The displacements which are described above as being vertical, can also be horizontal and vice versa or inclined.

L'appareil selon la présente invention permet de découper les flancs de pneumatiques avec une découpe précise et uniforme, de sectionner la bande de roulement et de minimiser les opérations de manutention pour une meilleure productivité.The device according to the present invention makes it possible to cut the sidewalls of tires with a precise and uniform cut, to cut the tread and to minimize handling operations for better productivity.

Claims (15)

  1. An apparatus for cutting tires of the type comprising a tread, side walls, and beads, so as to cut the side walls, the apparatus comprising:
    - a frame (1),
    - an accommodation zone (2) intended to receive a tire (31) to be cut in the frame (1),
    - lateral holding means (5, 6) for a tire received in the accommodation zone,
    - blades (7) arranged transversely, oriented toward a sidewall (32) of a tire (31) received in the accommodation zone (2), said blades (7) being mounted to slide between a separated position of disengagement of the tread (33) and a working position in which they penetrate into the sidewall (32) of a tire in order to separate the tread from its side walls, and
    - a controlling logic control (9) governing the sliding of said blades (7) between a separated position and a working position in order for the blades (7) to penetrate into the side walls (32) of a tire (31) received in the apparatus only when they are above its tread (33),
    charactized in
    - said accommodation zone (2) comprise a pair of drive rollers (10, 11) for a tire placed on the drive rollers (10, 11) in the accommodation zone (2),
    - two support structures (3', 3") are mounted above and on either side of the accommodation zone (2),
    - said holding means are mounted on at least one of the two support structures (3', 3"),
    - a detector, in particular an optical detector (4), capable of detecting a void central zone of a tire (31) received in the accommodation zone (2), lying between the inner diameter of the beads (34) of the tire (31), said detector (4) being arranged on at least one of the two support structures (3', 3"),
    - blades are mounted on the support structures (3', 3"),
    - a controlling logic control governing the rotation of at least one roller of the pair of rollers (10, 11), and
    - the lateral holding means (5, 6) comprise:
    - a sliding jaw (6) capable of pressing against the bead (34) of a tire (31) received in the apparatus, and
    - a part (5) with two branches (37) each bearing a wheel (38) arranged to be inserted into a tire received in the apparatus and whose two branches are capable of coming into contact with an inner surface (35) of the tread (33) of the tire,
    - the jaw (6) and the part (5) are diametrically opposed relative to the inner circumference of a tire received in the apparatus, and
    - the blades (7), when they are in working position, penetrate into the side walls (32) of a tire (31) when the blades are in proximity to or received between the two branches (37) so as to stabilize the cutting zone.
  2. The apparatus as claimed in claim 1, comprising a cutting device (8) arranged on the frame (1), said cutting device (8) sliding to cut the tread (33) transversely.
  3. The apparatus as claimed in claim 2, in which the cutting device (8) for the tread (33), when said tread (33) is separated from its side walls (32), comprises a top arm (39) and a bottom arm (40), the top (39) or bottom (40) arm bearing, at one of its ends, a pair of coaxial disks (20) spaced apart from one another, the other top (39) or bottom (40) arm bearing an essentially circular blade (21) arranged between said disks (20), said cutting device (8) sliding to transversely cut the tread (33) when said tread (33) is separated from its side walls (32).
  4. The apparatus as claimed in claim 3, in which the essentially circular blade (21) comprises several radii of curvature.
  5. The apparatus as claimed in one of claims 3 or 4, in which the essentially circular blade (21) is beveled.
  6. The apparatus as claimed in one of claims 3 to 5, in which the top arm (39) and the bottom arm (40) have an elongate form whose length is at least equal to the width of the tread (33) of a tire (31) to be cut.
  7. The apparatus as claimed in one of the preceding claims, characterized in that the control (9) consists of a single logic controller governing all the functions of the apparatus.
  8. The apparatus as claimed in one of the preceding claims, in which the accommodation zone (2) comprises blocking elements (12) on either side of a tire (31) received in the apparatus and are arranged so as to slide horizontally to approach one another and pinch a tire (31) received in the apparatus.
  9. The apparatus as claimed in claim 8, in which the blocking elements (12) are cylinders, free to rotate about their longitudinal axis, entering into contact with the side walls (32) of a tire (31) to be cut so as to rotate synchronously with the tire (31) when it is driven by at least one roller of the pair of drive rollers (10, 11).
  10. The apparatus as claimed in one of the preceding claims, comprising a shroud (36) for at least partially enclosing the apparatus with, as appropriate, a tire (31) to be cut inside the apparatus, and at least one sensor for detecting the opening of the shroud (36) and stopping a cutting cycle.
  11. The apparatus as claimed in one of the preceding claims, in which the detector (4) capable of detecting a central zone of the tire (31), emits a laser beam.
  12. The apparatus as claimed in one of the preceding claims, in which the lateral holding means (5, 6) for a tire (31) received in the apparatus make it possible to lock in position tires (8) of which the inner diameter of the beads (34) varies from 30 centimeters to 60 centimeters.
  13. The apparatus as claimed in one of the preceding claims, comprising a sensor for detecting the presence of a tire (31) on the accommodation zone (2).
  14. The apparatus as claimed in one of claims 2 to 13, in which the cutting device (8) arranged on the frame (1) comprises means for grabbing a tread (33) arranged to clasp the tread during the transverse cutting of the tread (33).
  15. A method for cutting a tire by an apparatus as claimed in one of claims 1 to 14 comprising the following steps:
    - verification of the presence of a tire (31) by a sensor,
    - pinching of the tire between the cylinders (12),
    - raising of the accommodation zone (2) including the tire by a vertical displacement until the central zone, between beads, of the tire to be cut is detected by the laser beam,
    - convergence of the support structures (3', 3") by horizontal sliding to hold beads of the tire by the jaws (6) and the interior of the tread (33) by the part (5) and its two branches (37),
    - pressing on the inner part (35) of the tread by the part (5) with two branches, then,
    - pressing on the beads (34) by the jaws (6),
    - rotation of the tire by at least one of the rollers of the pair of drive rollers (10, 11),
    - cutting of the side walls (32) of the tire by the blade (7) arranged on each support structure (3', 3"),
    - optionally, separation of the two support structures (3', 3") of which each jaw (6) bears a cut side wall,
    - lowering of the accommodation zone (2) including the tread without its side walls until the tread is facing the cutting device (8),
    - transverse cutting of the tread (33) by horizontal sliding of the cutting device (8), then return of the cutting device (8) to its initial position,
    - opening of the protective shroud (36) by the user for recovery of the cut-off tread on the two rollers (10, 11) and of the side walls on each of the jaws (6).
EP17712840.2A 2016-03-10 2017-03-10 Device for cutting tyres Active EP3426448B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00310/16A CH712201B1 (en) 2016-03-10 2016-03-10 Tire cutting device.
PCT/IB2017/051411 WO2017153960A1 (en) 2016-03-10 2017-03-10 Apparatus for cutting tyres

Publications (2)

Publication Number Publication Date
EP3426448A1 EP3426448A1 (en) 2019-01-16
EP3426448B1 true EP3426448B1 (en) 2020-04-01

Family

ID=58398220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17712840.2A Active EP3426448B1 (en) 2016-03-10 2017-03-10 Device for cutting tyres

Country Status (6)

Country Link
US (1) US20200130214A1 (en)
EP (1) EP3426448B1 (en)
CN (1) CN109195758A (en)
CH (1) CH712201B1 (en)
MX (1) MX2018010822A (en)
WO (1) WO2017153960A1 (en)

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Publication number Priority date Publication date Assignee Title
CH716478A1 (en) * 2019-07-31 2021-02-15 Tyre Recycling Solutions Sa Machine for recycling tires.
CN112060168A (en) * 2020-09-02 2020-12-11 李杨 Tire and preparation process thereof
CN112959575B (en) * 2021-02-03 2023-03-24 苏州芙路得智能科技有限公司 Blow molding round box deburring equipment with threads

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FR2686541B1 (en) * 1992-01-23 1996-05-10 Terrassements Ste Fo Entrepris MACHINE FOR CUTTING TIRES.
WO1998024607A1 (en) * 1996-12-04 1998-06-11 Pincott James S Process and apparatus for making crumb rubber from scrap tyres
GB9726597D0 (en) * 1997-12-16 1998-02-18 Toland Joseph Pneumatic tyre rim cutting system
FR2780675B1 (en) * 1998-07-01 2003-12-19 Claude Choron TIRE CUTTING MACHINE
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Also Published As

Publication number Publication date
MX2018010822A (en) 2019-02-07
EP3426448A1 (en) 2019-01-16
CH712201A1 (en) 2017-09-15
US20200130214A1 (en) 2020-04-30
WO2017153960A1 (en) 2017-09-14
CN109195758A (en) 2019-01-11
CH712201B1 (en) 2020-09-30

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