WO2014147108A1 - Machine and method for cutting up tyre rubber at the end of life - Google Patents

Abstract

Machine (200) for cutting part (2b) of a tyre (2) up into pieces (2s), comprising, in combination: - a frame (201); - means (204) on which said tyre (2) rubber (2b) can rest supported, defining a supporting surface (303) intended to support the tyre (2) rubber (2b); - a cutting station (214) comprising cutting means (205) for making a cut in said rubber (2b) so as to cut it up into pieces (2s); - tyre (2) rubber (2b) feed means (203) configured to supply said rubber (2b) resting on the supporting surface (303) to the cutting station (214); a device (300) for the placement of the tyre rubber (2b) comprising means (301) for holding said rubber (2b) which are configured to come into contact with the tyre (2) rubber (2b) and immobilize it and which are connected to the frame (201) in such a way as to be able to move relative to the frame (201) in order to handle said rubber (2b) with respect to the frame (201) so as to make the rubber (2b) rest on the supporting surface (303) in an opened-out configuration.

Description

 MACHINE AND METHOD FOR CUTTING THE TIRE CAP AT END OF LIFE

[001] The present invention relates to a machine and a method of cutting into pieces of the tire screed (particularly heavy tires) at the end of life and is inserted in the technical sector of recycling tires at the end of life.

[002] The term "heavy tires" means tires having a diameter (rim) particularly high, such as for example the tires of 57 "and 63". These tires are generally used in earthmoving equipment in the mining sector.

[003] A particularly felt need, particularly in the field of heavy tires, is to be able to split the screed (previously separated flanks) into pieces in order to facilitate their subsequent elimination.

[004] This requirement requires the design and implementation of a cutting machine that is able to allow a correct positioning of the yoke so that the cutting machine can safely perform the cutting of this screed.

DE 25 53 539 discloses a machine for cutting the clevis of a tire in pieces comprising means for feeding and guiding the yoke towards a cutting station. The establishment of the yoke is done using several rollers arranged to exert pressure on the previously cut tire and to guide the cut portion thereof towards the supply means. This machine has disadvantages of safety and reliability in operation.

[006] A first objective of the present invention is therefore to meet this need by producing a tire screed cutting machine and the development of a method of cutting the tire screed. .

[007] The invention also provides a machine for cutting the yoke which is easily adaptable to treat tires of various dimensions. According to the invention, this object is achieved by a screed cutting machine and a screed cutting method, objects of the invention, comprising the technical features set forth in one or more of the appended claims.

[008] The technical characteristics of the invention, according to the aforementioned objectives, are clearly verifiable from the content of the claims mentioned below and its Advantages will be all the more evident in the detailed description which follows, made with reference to the accompanying drawings, which represent an exemplary embodiment thereof, in which:

 Figure 1 illustrates a side view of a cutting machine object of the present invention;

 Figure 2 illustrates a front view of the machine object of the present invention, in which some components have been removed to highlight others more prominently;

 Figure 3 illustrates a plan view of the machine object of the present invention; Figures 4 to 6 respectively show corresponding side views of the machine shown in the preceding figures in different operating configurations;

 Figures 7 and 8 illustrate respective larger scale side views of details of Figures 1 and 2;

 - Figure 9 illustrates a detail of the machine shown in the previous figures.

According to the drawings, there is designated by 200 an equipment or a machine for the splitting of the yoke 2b of a tire 2 into pieces.

[010] By the expression "splitting into pieces" is meant the splitting of the screed 2b into pieces of smaller dimensions.

[011] It should be noted that the yoke 2b, before its treatment in the machine 200, has been separated from the sidewalls of the tire: therefore, in the present description, by the expression "clevis 2b" is meant a part of a tire which includes only the screed, without the sidewalls or any steel cables located in the bead. [012] The machine 200 comprises a frame 201 and 204 support means on which the yoke 2b of the tire is supported. The support means 204 are connected to the frame 201. These support means 204 define a surface 303 capable of receiving in bearing the yoke 2b of the tire.

[013] These support means 204, in the example shown, are constituted by a plurality of rotating members 210 support. These rotary support members 210 are, preferably, crazy-type rotating elements consisting of rollers rotating about their axes X201 arranged substantially parallel to each other, thereby defining a rectilinear supply path for the yoke 2b of the tire 2. These rotary members 210 are carried by a first support member 212.

[014] The machine 200 comprises means 203 for feeding the yoke 2b of the tire 2, configured to feed a cutting station 214 (This cutting station 214 is part of the machine 200). The supply means 203 comprise driving members (208a, 208b) cooperating with each other to feed the yoke 2b of the tire to be split.

[015] The machine 200 also comprises means 222 for adjusting the relative position (vertical) of said drive members (208a, 208b). These adjustment means 222 make it possible to adjust the position of the drive members according to the dimensions (thickness) of the yoke 2b of the tire being shaped. According to the illustrated embodiment, the driving member 208a is movable along a guide 223 in a vertical direction between an extreme position of release (Figure 1) and another engagement (Figure 4) with the clevis 2b of the tire 2 being shaped.

[016] The cutting station 214, which is part of the invention, comprises cutting means 205 (clearly visible in Figure 9). The cutting means 205, according to the preferred embodiment of the invention, comprise a first blade 205a and a second blade 205b pivoting hinge relative to each other in a bearing point 206, and which cooperate to define a shear 207. The first blade 205a and the second blade 205b are configured to rotate in a substantially vertical plane, that is, to rotate about a horizontal axis.

[017] Preferably a blade 205a is fixed to the frame 201 and the other blade 205b is movable relative to the frame 201. The first blade 205a and the second blade 205b are shaped so that the section of said yoke 2b of the 2 begins at an end portion of the blades 205a, 205b distal to the fulcrum 206. In other words, it is the end portion of the blades (205a, 205b) distal to the point d support 206 which comes into contact first, following the relative movement of the blades (205a, 205b) which are closer, with the yoke 2b of the tire 2 subjected to cutting. The blades (205a, 205b) are shaped so that the section of the tire clevis progresses distally from the bearing point 206 at their proximal portion to facilitate cutting and reduce power. necessary for cutting.

[018] The cutting means 205 are manipulated using means 215 handling. These handling means 215 act on the blades (205a, 205b) to move them between an extreme position of complete opening, shown in FIG. 9, and an extreme position of closure, which is reached when the section of the clevis 2b of the Pneumatic 2 has been completely performed.

The handling means 215 comprise an actuator 216 interposed between the first blade 205a and the second blade 205b. One of the two blades (the first 205a) is fixed relative to the frame 201 while the other of the two blades (the second 205b) is movable. The actuator 216 is preferably a hydraulic type actuator.

[020] According to the invention, the machine 200 comprises means 203 for supplying said yoke 2b of the tire 2, configured to feed the yoke cutting station 214 214 of the tire 2. These feed means 203 comprise bodies 208, configured to drive the yoke 2b of the tire 2 towards the cutting means 205, and formed of rollers (208a, 208b) cooperating with each other and acting on opposite surfaces (C1, C2) of the yoke 2b of the Pneumatic 2.

According to the illustrated example, the machine 200 comprises an upper roll 208a and a plurality of lower rollers 208b. The lower rollers 208b bear in abutment the yoke 2b of the tire 2 being shaped near the cutting station 214. In particular, at least the roller 208a acting on a surface C1 of the yoke 2b can be actuated by means of means 209a driving in rotation. Preferably, the other rollers (208b) acting on the other tire surface C2 can also be actuated by means of rotating drive means 209b. The means 209a and 209b for rotating the rollers (208a, 208b) comprise a motor, of electric type.

[022] The roller 208a can be actuated using the drive means 209a is configured so that its position along the axis X200 rotation is adjustable: this advantageously allows, during the shaping of the yoke 2b, to center the roller 208a with respect to the yoke 2b, so that the drive action on the yoke is optimal.

[023] According to the invention, the machine 200 comprises a device 300 for placing the yoke 2b of a tire, comprising means 301 for retaining said yoke 2b, configured to come into contact with the yoke 2b, and block it.

[024] The retaining means 301 are connected to the frame 201 so as to be movable (preferably horizontally and vertically relative to the frame 201) to move said yoke 2b relative to the frame 201 and to deploy it so as to come on at at least part of its length resting on the support surface 303. Thus, the expanded clevis can rest with its entire length on the support surface 303 or with a length predetermined, equal to at least twice the cutting length 2s on the support surface 303. The retaining means 301 comprise a pair of locking elements (301a, 301b) movable relative to each other between a release position of said yoke 2b and a retaining position of this yoke 2b in which they act on opposite surfaces (C1, C2) of said clevis 2b of the tire 2. Each locking element (301a, 301b) of said pair of locking elements (301a, 301b) is configured to rotate around a respective axis (X301a, X301b), so as to drive and move said yoke 2b when said locking elements (301a, 301b), in the retaining position, hold the yoke 2b. In other words, the yoke 2b is advanced by means of a rotation of the locking elements (301a, 301b).

[025] According to the illustrated embodiment, the machine 200 comprises means 304 for actuating in rotation (about their axis) at least one element 301 b among said locking elements (301 a, 301 b). These actuating means 304 preferably comprise an electric motor. Preferably, an element (301a) of said locking elements (301a, 301b) rotates freely.

[026] We will now describe in more detail the installation device 300, which is part of the present invention.

[027] This installation device 300, as already discussed above, comprises two rotary locking elements (301a, 301b). These two elements (301 a, 301 b) of blocking face each other to cooperate to maintain between them the yoke 2b.

[028] In particular, a member (301 a) of said locking elements (301 a, 301 b) acts on the yoke 2b coming into contact with the surface C2 while the other locking element 301 b comes into contact with the surface C1 of the yoke (on the other side of the surface C2), acting accordingly on the yoke 2b.

[029] One of these elements (301 a) blocking is carried by a pivotally connected arm 310 (pivoting hinge) to a second unit 308 belonging to the device 300 (and whose details will be specified later in this description), at a horizontal axis 313. The arm 310 is rotated relative to the center of rotation 313 with the aid of the actuating means 314. Preferably the actuating means 314 comprise a piston sliding in a cylinder. Either the piston or the cylinder is connected (pivoted hinge) to the arm 310, while the other element is connected (pivoted hinge) to a second unit 308 better described in what follows. [030] According to the preferred embodiment illustrated in the accompanying figures, the machine 200 comprises a first slide 305 connected to said frame 201 supporting a first sliding unit 306 on said first slide 305. The first slide 305 extends horizontally and the first sliding unit 306 is therefore movable horizontally. [031] The machine comprises actuating means 320 for allowing the handling of the first unit 306 relative to the frame 201 (along the first guide 305). These actuating means 320, according to the preferred embodiment, comprise a chain 312, fixed to the frame 201 at its two opposite ends. The chain 312 is engaged by a device 31 1 (clearly visible in FIG. 7 and which forms part of the actuating means 320), configured to define a return of said chain 312 by means of a plurality of toothed wheels (330a, 330b, 330c).

[032] The device 31 1 comprises at least one motorized gear 330a, which can be rotated (by means of an electric motor 331) to allow the first unit 306 to move in movement along the first slideway 305. [033] In a variant (not shown in the drawings), the actuating means 320 comprise a pinion and rack mechanism, the rack being fixedly mounted on the frame 201 and arranged parallel to the first slide 305 (preferably half -distance relative to the rails of the slide), the pinion being itself secured to the first unit 306. The pinion is rotated by an electric motor mounted on the unit 306 and allows the displacement of the first unit 306 on along the rails of the slide 305.

[034] The first unit 306 carries the means 301 retaining.

[035] In addition, according to the preferred embodiment, the machine 200 comprises a second slide 307 and a second unit 308 sliding on said second slide 307. The first sliding unit 306 supports said second sliding unit 308 and via the second slide 307.

[036] In particular, the second unit 308 is vertically movable relative to the first unit 306 by means of corresponding actuating means 316. These actuating means 316 comprise a chain 317 and a motor 318 configured to engage the chain 317, by means of a toothed wheel. The chain 317 is rigidly connected to the first unit 306. The chain 317 extends vertically.

[037] In an alternative embodiment (not visible in the drawings) the actuating means comprise a hydraulic cylinder attached to the unit 306 whose rod is secured to of the second unit 308. Such a hydraulic cylinder is safer in operation, while allowing a faster and smooth movement of the second unit 308.

[038] The second unit 308 carries the retaining means 301 and is vertically movable along said second slide 307. [039] The arm 310 is pivotally hinged to the second unit 308, and the elements (301a, 301b ) of blocking are carried by the second unit 308. These locking elements (301a, 301b) are movable horizontally and vertically relative to the frame 201 (in the illustrated example, by means of the first unit 306 and the second unit 306). unit 308).

The operation of the invention will be described below, with particular reference to the machine 200 (and the positioning device 300) illustrated in the accompanying figures and also referring to the shaping of the screed 2b of said tire 2.

[041] It should be noted that, preferably, the yoke 2b has been previously separated from the steel cable which is embedded inside the tire 2 itself and which constitutes a structural support of the tire 2.

[042] The yoke 2b is captured through the device 300 of establishment. In particular, a portion of the yoke 2b is locked between the two locking elements (301a, 301b) so that the device 300 can move the entire yoke 2b.

[043] The yoke 2b of the tire 2 is disposed in a configuration in which it defines a ring in a vertical plane (in a plane substantially perpendicular to a section plane), clearly visible in Figure 1. In this configuration a portion of the yoke 2b is disposed between the blades (205a, 205b), and another portion is locked between the locking elements (301a, 301b) of the device 300.

[044] After having correctly set up, as previously described, the yoke 2b by means of the positioning device 300, the blades (205a, 205b) are actuated to perform a first cut or a first cut of the yoke 2b ( at a section line designated LT1 in Figure 1), so as to split the ring constituted by the yoke 2b so as to terminate its continuity. Actuation of the blades (205a, 205b) to cut the yoke 2b occurs by rotating the upper blade 205a so as to bring it closer to the lower blade 205b. The continuity of the yoke 2b is then interrupted after the first cut.

[045] will be described later a preferred mode of installation of the screed having underwent the first cut on the rotating members 210 (more generally, on the support means 204).

[046] In particular, according to this first operating mode, the following phases provide for:

 a) rotate the elements 301a and 301b so as to scroll between the yoke 2b to advance it;

 b) horizontally and vertically move the positioning device 300 to an extreme position away from the cutting means 205;

 c) release the yoke on the support surface 303 when the device 300 is in said extreme position away from the cutting means 205.

During these operations, the horizontal and vertical position of the device 300 is modified so that the horizontal and vertical handling of the yoke 2b begins when the movement of the yoke 2b between the elements 301a and 301b has been completed. which reduces in this way the stresses exerted on the frame 201 and / or the elements of the machine 200. [048] According to one variant, the phases a) and b) can be performed at least partially in masked time.

[049] It can thus be envisaged, according to a second operating mode of the machine of the invention, to synchronize the displacement of the setting device 300 with the cutting of the pieces 2s of the yoke 2b. The yoke 2b is then moved in stages, each step of displacement taking place during the cutting of a piece 2s. The length of the yoke 2b resting on the support 303 near the cutting means 205 is preferably equal to or greater than twice the length of the piece 2s before each new displacement of the yoke 2b by the feed means 203. The clevis is released before the last cutting operation. This second operating mode makes it possible to move the yoke in masked time and thus reduce the time of a cutting cycle of the yoke 2b.

[050] Thus, according to this second operating mode, the following phases provide for:

 a) rotate the elements 301a and 301b so as to scroll between the yoke 2b to advance it;

b) horizontally and vertically displacing the positioning device 300 to a position of horizontal distance relative to the cutting means 205 equal to at least twice the length of a piece 2s; c) feeding the cutting means 205 by moving with the supply means 203 the yoke 2b of a length equal to that of a piece 2s; d) cutting a piece 2s and at the same time horizontally and vertically move the positioning device 300 so as to place on the surface 303 a clevis length 2a equal to the length of a piece 2s;

 e) repeat step d) until the yoke 2b is reduced to pieces 2s by providing release of the yoke on the bearing surface 303 at least before cutting the last piece 2s. [051] In the phase of release of the yoke on the bearing surface 303, when the device 300 is in said extreme position away from the cutting means 205 or before the last piece cut 2s, the elements are disposed ( 301 a, 301 b) in their release position.

[052] Figures 4 to 6 illustrate the operational phases described above concerning the establishment of the yoke 2b on the rotating members 210 according to the first operating mode.

[053] The yoke 2b, which has an annular conformation with a substantially U-shaped section, is therefore arranged by means of the device 300 for placing in support (deployed) on the rotating members 210 of support so that a part of the outer surface (or yoke) is supported on these rotating members 210 support so as to define a single straight body having a substantially "U" section which extends longitudinally substantially in a direction orthogonal to the axis rotating bodies 210 support.

[054] When the yoke 2b is moved by means of the installation device 300, said yoke 2b is engaged with the feed means 203, so that the yoke 2b is not subjected to displacements during handling.

[055] When the yoke 2b is properly placed in abutment on the rotating members 210 support (support means 204), the device 300 releases the yoke 2b. In fact, when the device 300 is in its extreme release position, the locking elements 301a and 301b are rotated to release the yoke 2b on the rotating support members 210.

[056] Following the establishment of the yoke 2b on 210 support members, is brought another clevis portion 2b towards the blades (205a, 205b), to perform the cutting of the first piece of clevis 2b , or to make a second cut of the clevis 2b.

[057] It feeds the yoke blades 2b by operating the means 203 supply. The actuation of the blades (205a, 205b) towards their cutting position causes a second cut in the yoke 2b of the tire 2. [058] Following the second cut, the portion of the yoke (referred to herein as the expression "Piece") between the first (LT1) and the second (not shown) cutting line comes to detach from the rest of the body of the clevis 2b itself.

[059] To effect the splitting of the screed into a plurality of pieces 2s, it is necessary to repeat several times the cycle described above comprising the steps:

 - supply of the screed 2b and

 actuating the blades to their cutting position.

[060] The pieces 2s of the yoke 2b fall at a collection area disposed below the cutting blades 205a and 205b.

[061] The yoke 2b is moved, by means of the drive rollers 208, along the rectilinear path defined by the support members 210 themselves. In this way, successive and consecutive portions of the yoke 2b are brought to the level of the cutting station 214 to be cut.

[062] In summary, with consecutive cycles of handling the rectilinear body of the yoke towards the station 214 for cutting and actuating the cutting blades (205a, 205b), the fractionation is carried out in pieces 2s of the whole of the screed 2b.

[063] An advantage of this machine 200 is that, thanks to its particular structure and the configuration of its constituent elements, it is able to handle tires of particularly large dimensions.

[064] In particular, such a machine 200 is able to manipulate, thanks to the installation device 300, the yoke 2b in order to properly position the yoke 2b for subsequent cutting without the need to resort to external lifting devices and without any danger for the operator. Also, the establishment of the yoke 2b with respect to the 214 cutting station is simpler and remains particularly safe.

[065] The method of splitting the clevis 2b of a tire 2 into pieces 2s, comprises the steps of:

prepare a positioning device 300 comprising means 301 of retaining the yoke 2b of the tire 2, and preparing means 205 for cutting the yoke 2b of the tire 2;

 maintain the yoke 2b of the tire 2 by means of said retaining means 301; disposing said clevis 2b of the tire 2 in a configuration in which it defines a ring in a vertical plane;

 maintain the yoke 2b of the tire 2 by means of said retaining means 301; making a first cut of the yoke 2b, using the abovementioned cutting means 205, so as to interrupt the continuity of the ring defined by the yoke 2b while the yoke 2a is maintained using the means 301 of detention;

 away, following the first cut, said means 301 for retaining the cutting means 205 until said yoke 2b rests on the bearing surface 303;

 performing at least one cutting cycle comprising the substeps of: o supplying the cutting means 205 with screed 2b;

 o cut, using said cutting means 205, said yoke 2b of the tire 2 to split said yoke 2b of the tire 2 into pieces 2s.

[066] Preferably, the step of arranging said clevis 2b of the tire 2 in a configuration in which it defines a ring in a vertical plane comprises a step of moving said clevis 2b of the tire 2 with the aid of the means 301. retainer so as to place it in a configuration in which it defines a ring in a vertical plane.

[067] In addition, it is possible, during the step of moving said means 301 retaining the cutting means 205 until said yoke 2b rests on the bearing surface 303, to move said means 301 retaining vertically downwards and horizontally away from the cutting means 205 on a race whose horizontal projection is equal to or less than that of the yoke 2b.

[068] It is also expected to provide, following the step of moving said means 301 for retaining the cutting means 205 until said yoke 2b rests on the bearing surface 303, a step of releasing said yoke 2b retaining means 301.

[069] The step of preparing a delivery device 300 comprising means 301 for retaining the yoke 2b of the tire 2 may usefully comprise a step of preparing at least one pair of rotary elements (301a, 301). b). Similarly, the step of holding the tire clevis 2b with said retaining means 301 may comprise a step of engaging said clevis by means of said rotary members (301a, 301b).

[070] Finally, following the step of making a first section of the yoke 2b of the tire 2, so as to interrupt the continuity of said ring of the yoke 2b, we can usefully provide a step consisting in actuating in rotation said rotary elements (301 a, 301 b), to allow a movement of the yoke 2b of the tire 2 between said rotary elements (301 a, 301 b).

Claims

1) Machine (200) for cutting the yoke (2b) of a tire (2) in pieces (2s), characterized in that it comprises, in combination:  a frame (201);  - Support means (204) in support of said yoke (2b) of the tire (2) defining a bearing surface (303) adapted to receive bearing the yoke (2b) of the tire (2);  a cutting station (214) including cutting means (205) for cutting said screed (2b) so as to break it into pieces (2s);  - means (203) for supplying said yoke (2b) of the tire (2), configured to bring said yoke (2b) resting on the bearing surface (303) at the cutting station (214);  a device (300) for placing the yoke (2b) of the tire, comprising means (301) for retaining said yoke (2b), configured to come into contact with the yoke (2b) of the tire (2) and block it, and connected to the frame (201) so as to be movable relative to the frame (201) to handle said screed (2b) relative to the frame (201) so as to rest the yoke (2b) in a deployed configuration on the bearing surface (303). 2) Machine according to claim 1, wherein the retaining means (301) are configured to be movable horizontally and vertically relative to the frame (201). 3) Machine according to claim 1 or 2, wherein said means (301) comprise at least a pair of locking elements (301a, 301b) movable relative to one another between a position releasing said yoke (2b) and a retaining position of said yoke (2b) in which they act on opposite surfaces (C1, C2) of said yoke (2b) of the tire (2). 4) Machine according to claim 3, wherein each element (301a, 301b) for locking said pair of locking elements (301a, 301b) is configured to rotate about a respective axis (X301a, X301 b), so that when said locking elements (301a, 301b) in the holding position cooperate to hold the yoke (2b), the rotation of at least one element (301a, 301 b) lock causes and moves said yoke (2b). 5) Machine according to any one of claims 1 to 4, comprising a first slide (305) connected to said frame (201) and a first unit (306) sliding on said first slide (305), which first unit (306) carries the retaining means (301) and is movable horizontally along said first slide (305). 6) Machine according to claim 5, wherein the first unit (306) supports a second slide (307) on which is slidably mounted a second unit (308) carrying the means (301) for retaining, and movable vertically along said second slide (307), 7) Machine according to any one of claims 1 to 6, wherein the means (205) for cutting comprises a first blade (205a) and a second blade (205b) hinged pivotally relative to each other. a fulcrum (206) and cooperating to form a shear (207). 8) Machine according to any one of claims 1 to 7, wherein the means (203) comprise driving members (208). 9) Machine according to any one of claims 1 to 8, wherein the means (204) comprise a plurality of rotatable support members (210). 10) Machine according to claim 9, wherein at least a portion of the rotary members (210) support are arranged with their axes (X201) substantially parallel, so as to define a straight path to cause the means (205) for cutting a part (2b) of the tire (2) constituted by a yoke (2b). 1 1) A method of cutting the yoke (2b) of a tire (2) to split it into pieces (2s), characterized in that it comprises the steps of:  preparing a positioning device (300) comprising means (301) for retaining the yoke (2b) of the tire (2) and preparing means (205) for cutting the yoke (2b) of the tire (2);  disposing said yoke (2b) of the tire (2) in a configuration in which it defines a ring in a vertical plane;  maintaining the clevis (2b) of the tire (2) with the aid of said retaining means (301); making a first cut of the yoke (2b), using the abovementioned cutting means (205), so as to interrupt the continuity of the ring defined by the yoke (2b) while the yoke 2a is maintained at assisting means (301) for restraint; away, following the first cut, said means (301) for retaining the cutting means (205) until said yoke (2b) rests on a bearing surface (303); performing at least one cutting cycle comprising the substeps of: o supplying the cutting means (205) with screed (2b);  o cut, by means of said cutting means (205), said yoke (2b) of the tire (2) to split said yoke (2b) of the tire (2) into pieces (2s). The method of claim 11, wherein the step of disposing said yoke (2b) of the tire (2) in a configuration in which it defines a ring in a vertical plane comprises a step of moving said yoke (2b). ) of the tire (2) by means of the retaining means (301) so as to place it in a configuration in which it defines a ring in a vertical plane. 13) Method according to any one of claims 1 1 or 12, wherein, following the step of moving said means (301) retaining means (205) for cutting until said clevis ( 2b) rests on the bearing surface (303), there is provided a step of releasing said yoke (2b) by the retaining means (301). 14) Method according to any one of claims 1 1 to 13, wherein the step of preparing a delivery device comprising means (301) for retaining the yoke (2b) of the tire (2) comprises a a step of preparing at least one pair of rotary members (301a, 301b) and wherein said step of holding the yoke (2b) of the tire with said retaining means (301) comprises a step of contact said yoke by means of said rotary elements (301a, 301b). 15) The method of claim 14, wherein, following the step of making a first section of the yoke (2b) of the tire (2), so as to interrupt the continuity of said ring of the yoke (2b) there is provided a step of rotating said rotary elements (301a, 301b) so as to enable the clevis (2b) of the tire (2) to run between said rotary elements (301a, 301b).