Process and plant for fixing a functional insert to a tyre

Abstract

The invention is related to a process and a plant for fixing a functional insert to a tyre. The plant (10) comprises an application station (15), a loading station (11), a first handling device (27) that is configured for performing an application sequence on the functional insert (1) and a second handling device (28) that is configured for performing a consolidation sequence on the functional insert (1).

Description

[0001] "PROCESS AND PLANT FOR FIXING A FUNCTIONAL INSERT TO A TYRE"

[0002] The present invention relates to a process for fixing a functional insert to a tyre. The invention further relates to a plant for fixing a functional insert to a tyre.

[0003] A tyre for vehicle wheels typically has a substantially toroidal structure concentric with respect to a rotation axis of the tyre itself during operation, and has a substantially concave inner surface, delimiting an inner cavity which, in operating conditions, is internally closed by a mounting rim. On the outer surface of the tyre, a tread band may be identified, integrated into a crown portion, and a pair of sidewalls which extend radially from respective axially opposite edges of the tread band towards respective beads adapted to engage with the mounting rim.

[0004] On some types of tyres it is known to incorporate functional inserts, typically applied against the inner surface after vulcanisation, for example to reduce noise, or to monitor in real time the operating conditions of the tyre and track the temporal evolution of parameters representative of such operation.

[0005] In particular, functional inserts are known which are sensor means fixed to the inner surface of a tyre to detect one or more physical quantities related to the operation of the tyre, such as temperature, internal pressure, acceleration of the inner surface, deformation of the inner surface, and more.

[0006] For example, document WO2018 / 065846A1 describes a device for anchoring an electronic unit having a base formed of elastomeric material to which a module containing the electronic unit is firmly fixed. An attachment surface of the base, intended to be bonded to the inner surface of the tyre, is coated with a layer of pressure-sensitive adhesive. The application of the device may be entrusted to manual interventions by an installer using suitable equipment.

[0007] There are also known solutions for the automated installation of functional inserts in an industrial production line.

[0008] Document WO202135990A1 describes a plant for the application of sensors within tyres. The sensor is applied in an application station by means of a handling device in the form of a robotic arm, which has a grip mechanism and a compacting mechanism at an operating end thereof. The grip mechanism comprises circumferentially distributed jaws which are movable by the action of a control element to pick up the sensor from a feed tray and place it inside the tyre, retained by a positioning and locking mechanism along the processing line. The compacting mechanism comprises pressure rollers arranged around the jaws and movable on command of the handling device to compress and implement the adhesion of the sensor previously positioned in the tyre by means of the grip mechanism.

[0009] The term "tyre" refers to a moulded and vulcanised tyre.

[0010] The term "functional insert" refers to an element adapted to perform a function within a tyre, for example a sensor means configured for monitoring operating parameters of the tyre or a housing body for a sensor means or a sound-absorbing insert. The term "rolling" refers to a sliding pressing action performed by means of pressing devices provided with one or more sliding rollers.

[0011] The term "application area" of a tyre refers to a portion of the radially inner surface of the tyre.

[0012] The term "classified application area" refers to an application area which may be identified by certain features, for example by having been subjected to cleaning, or by being in a certain position with respect to other inserts applied internally to the tyre itself.

[0013] In the search for solutions that allow for improved automation in production lines and to maintain high flexibility so as to allow the production of different types of tyres, the Applicant has observed that the application of functional inserts with systems of the type described in WO202135990A1 requires long execution times to obtain a finished tyre and in any case implies a mediation in the choice of parameters and duration of some relevant process steps, in particular the compaction of the functional insert as it is performed directly by the handling device that positions the functional insert.

[0014] In an attempt to mediate between reducing execution times and obtaining a quality level of the finished tyre which, considering the high rotation speeds of a high-performance tyre, allows for maintaining the necessary safety and reliability, the Applicant has perceived the importance of a precise application of the functional insert on the tyre and of an adequate consolidation of its adhesion to the inner surface of the tyre, especially in the case in which particular adhesives such as the PSA (Pressure Sensitive Adhesive) type are to be used.

[0015] The Applicant has therefore found that by dedicating a separate handling device to both the positioning and the consolidation of the functional insert and by overlapping at least partially in terms of time these process steps, it is possible to positively respond to the industrial needs described above by making the process steps themselves and the respective dedicated timeframes more effective.

[0016] According to a first aspect, the invention relates to a process for fixing a functional insert to a tyre.

[0017] Preferably, provision is made for arranging, in an application station, a tyre, wherein said tyre has a radially inner surface. Preferably, provision is made for arranging, in a loading station, a functional insert, wherein said functional insert has an attachment surface and an exposed surface directed opposite the attachment surface.

[0018] Preferably, provision is made for performing an application sequence on said functional insert wherein a first handling device picks up said functional insert from the loading station, transfers said functional insert from the loading station to the application station, adheres the attachment surface of said functional insert to an application area of the radially inner surface of the tyre arranged in the application station, releases said functional insert adhered to the application area and returns to the loading station.

[0019] Preferably, provision is made for performing a consolidation sequence comprising exerting a moving pressing action by a second handling device against said exposed surface of said functional insert adhered to the application area so as to consolidate the adhesion of the attachment surface to the application area.

[0020] Preferably, the consolidation sequence begins while said first handling device returns to the loading station at the end of said application sequence, or while said first handling device begins to perform a subsequent application sequence on a subsequent functional insert.

[0021] Preferably, the consolidation sequence ends before said first handling device in said subsequent application sequence transfers said subsequent functional insert to the application station.

[0022] In a further aspect, the invention relates to a plant for fixing a functional insert to a tyre.

[0023] Preferably, an application station is provided, configured for receiving a tyre having a radially inner surface.

[0024] Preferably, a loading station configured for receiving a functional insert is provided, wherein said functional insert has an attachment surface and an exposed surface directed opposite the attachment surface.

[0025] Preferably, a first handling device is provided, configured for performing an application sequence on said functional insert comprising: picking up said functional insert from the loading station, transferring said functional insert from the loading station to the application station, adhering the attachment surface of said functional insert to an application area of the tyre arranged in the application station, releasing said functional insert adhered to the application area and returning to the loading station. Preferably, a second handling device is provided, configured for performing a consolidation sequence on said functional insert.

[0026] Preferably, said consolidation sequence begins while said first handling device returns to the loading station at the end of said application sequence, or while said first handling device begins to perform a subsequent application sequence on a subsequent functional insert.

[0027] Preferably, said consolidation sequence ends before said first handling device in said subsequent application sequence transfers said subsequent functional insert to the application station.

[0028] Preferably, said consolidation sequence comprises exerting a moving pressing action against said exposed surface of said functional insert adhered to the application area so as to consolidate the adhesion of the attachment surface of said functional insert to the application area.

[0029] The Applicant believes that by providing a first handling device for the execution of an application sequence, a second handling device for the execution of a consolidation sequence and the partial temporal overlapping of the two sequences, these process steps are made more efficient, acquiring a final result in line with the requirements of a modern industrial plant.

[0030] In at least one convenient embodiment, the invention further comprises one or more of the following preferential features. Preferably, said first handling device adheres the attachment surface of said functional insert to the application area, by exerting a thrust action on said functional insert against the application area itself.

[0031] The Applicant believes that this application method allows the use of PSA (Pressure Sensitive Adhesive) type adhesives which are advantageous both in terms of management during fixing and the quality of the final result.

[0032] Preferably, said consolidation sequence on said functional insert is performed while said tyre is in said application station.

[0033] The Applicant believes that this provision allows the functional insert to be fixed precisely inside the tyre already correctly oriented and positioned in the application station.

[0034] Preferably, provision is made for arranging, in the loading station, said subsequent functional insert having an attachment surface and an exposed surface directed opposite the attachment surface.

[0035] Preferably, provision is made for picking up, from the loading station, said subsequent functional insert by said first handling device, while said second handling device ends the consolidation sequence on said functional insert.

[0036] Preferably, provision is made for removing said tyre from the application station at the end of the consolidation sequence on said functional insert.

[0037] Preferably, provision is made for arranging, in the application station, a subsequent tyre having a radially inner surface.

[0038] Preferably, provision is made for performing a final step of the application sequence on said subsequent functional insert wherein the first handling device at least adheres the attachment surface of said subsequent functional insert to an application area of the radially inner surface of the subsequent tyre arranged in the application station, releases said subsequent functional insert adhered to the application area and returns to the loading station.

[0039] Preferably, the functional insert is angularly oriented according to a predetermined angular orientation about the central axis before being applied to the application area. Preferably, the angular orientation of the functional insert is based on the angular position of an orientation marker. Preferably, the angular position of the orientation marker is detected at the loading station.

[0040] Preferably, the first handling device picks up the functional insert with the central axis arranged vertically and, before applying it to the application area, rotates it by 90° so that the central axis is arranged horizontally.

[0041] The Applicant believes that the temporal overlapping of the application step and the consolidation step of functional inserts on a sequence of tyres balances the need for automation and maintaining high quality standards of the finished tyre.

[0042] Preferably, said moving pressing action comprises a subaction of circumferential pressing wherein said second handling device exerts a pressure in rotation around a central axis of said functional insert, perpendicular to said attachment surface.

[0043] Preferably, said second handling device comprises a blades member configured for performing a sub-action of circumferential pressing wherein said second handling device exerts a pressure in rotation around a central axis of said functional insert, perpendicular to said attachment surface. The Applicant believes that circumferential pressing simplifies consolidation, particularly in areas of the functional insert that would be difficult to reach with rolling devices.

[0044] Preferably, said moving pressing action comprises a subaction of radial pressing wherein said second handling device exerts a pressure in radial sliding away from a central axis of said functional insert, perpendicular to said attachment surface.

[0045] Preferably, said radial pressing sub-action is performed by rolling.

[0046] Preferably, said second handling device comprises a rolling member configured for performing a sub-action of radial pressing wherein said second handling device exerts a pressure in radial sliding away from a central axis of said functional insert, perpendicular to said attachment surface.

[0047] The Applicant believes that radial pressing, particularly by rolling, optimises consolidation by pushing any air bubbles outward from the functional insert.

[0048] Preferably said circumferential pressing sub-action is performed before said radial pressing sub-action.

[0049] The Applicant believes that the intended sequence of circumferential pressing and radial pressing allows any air bubbles to be concentrated by the circumferential pressing and then more effectively pushed outwards from the functional insert by the radial pressing.

[0050] Preferably, said sub-action of circumferential pressing is performed at a circumferential portion of the functional insert close to the central axis and said sub-action of radial pressing is performed starting from said circumferential portion away from the central axis.

[0051] Preferably, said blades member is configured for operating at a circumferential portion of the functional insert close to the central axis.

[0052] Preferably, said rolling member is configured for operating from said central portion away from the central axis.

[0053] The Applicant believes that by differentiating the circumferential and radial pressing zones, the effects of each of them can be optimised, improving consolidation even in the case of large areas, which is useful for avoiding the risk of detachment of the functional insert during operation.

[0054] Preferably, arranging a tyre in an application station comprises transporting said tyre along an application line which comprises one or more stations, including at least said application station.

[0055] The Applicant believes that the provision of an application line allows for improved process automation.

[0056] Preferably, said tyre is transported along said application line with the rotation axis arranged vertical and with a lower side abutted against an application conveyor belt defining a transport plane.

[0057] Preferably, an application line is provided, configured for transporting said tyre, wherein said application line comprises one or more stations, including at least said application station.

[0058] Preferably, said application line comprises an application conveyor belt configured for moving said tyre with vertical rotation axis and with a lower side abutted against said application conveyor belt defining a transport plane. The Applicant believes that the horizontal transport configuration is the condition that allows a uniform distribution of any deformations of the tyre while also providing solid support during processing.

[0059] Preferably, said application area is a classified application area arranged in a specific angular position with respect to a reference system associated with the tyre, around a rotation axis of the tyre itself.

[0060] Preferably, provision is made for cleaning said application area.

[0061] Preferably, a cleaning station is provided, located at the entrance to the application line and configured for cleaning, more preferably by laser, the application area.

[0062] Preferably, provision is made for storing an angular distance of said classified application area with respect to an angular marker of the tyre.

[0063] The Applicant believes that fixing the functional insert at a specific application area selected for its features improves the quality of the fixing and allows for the appropriate selection of this area.

[0064] Preferably, provision is made for rotating the tyre around the rotation axis thereof in order to position the classified application area in a predetermined angular application position with respect to a reference system associated with the application station.

[0065] Preferably, said tyre is rotated in suspension around its own axis of rotation.

[0066] Preferably said one or more stations of the application line also comprise an orientation station arranged upstream of said application station according to a direction of transport of the tyre along the application line.

[0067] Preferably, said orientation station comprises a gripper configured to grasp the tyre at the upper bead, lift it, and rotate it in suspension about its axis of rotation to position a classified application area of the tyre in a predetermined angular application position relative to a reference system associated with the application station.

[0068] The Applicant believes that rotating the tyre rather than the handling devices applying and consolidating the functional insert improves the accuracy of positioning and subsequent operations.

[0069] Preferably, said predetermined angular application position remains fixed with respect to a reference system associated with the application station during the execution of the application sequence and of the consolidation sequence on said functional insert.

[0070] Preferably, said predetermined angular application position is fixed with respect to a reference system associated with the application station during the execution of the application sequence and of the consolidation sequence on said functional insert and during the execution of the subsequent application sequence and consolidation sequence on a subsequent functional insert.

[0071] The Applicant believes that performing the application and consolidation in an unchanged position with respect to the application station allows the application station itself to be arranged in such a way as to optimise the stresses to which the handling devices and the components of the station itself are subjected, as well as improving the precision and repeatability of the positioning and subsequent operations. Preferably, provision is made for detecting an angular marker associated with the angular position of the classified application area with respect to a reference system associated with the tyre, before rotating said tyre around the rotation axis thereof in order to position said classified application area in the predetermined angular application position with respect to a reference system associated with the application station. The Applicant believes that using an angular marker applied to the tyre simplifies the automation of the process and improves the accuracy of positioning of the functional insert. Preferably, provision is made for performing a quality control on said functional insert fixed to the tyre to detect the presence of any defects.

[0072] Preferably, said one or more stations also comprise a control station arranged downstream of said application station according to a direction of transport of the tyre along the application line.

[0073] Preferably, said control station is configured for performing a quality control on said functional insert fixed to the tyre in order to detect the presence of any defects.

[0074] Preferably, said quality control is configured for detecting the presence of bubbles or errors in the positioning of the functional insert with respect to the classified application area.

[0075] Preferably, at said application station, provision is made for detaching said tyre from the transport plane, placing it on a support plane and performing the operations planned in the application station on the tyre resting on the support plane.

[0076] Preferably, at each of said stations, provision is made for detaching said tyre from the transport plane, placing it on a support plane and performing the operations planned in the respective station on the tyre resting on the support plane.

[0077] Preferably, detaching said tyre from the transport plane comprises lifting said support plane with respect to said transport plane so as to place said tyre resting on the support plane and lifting it from said transport plane.

[0078] Preferably, provision is made for placing the tyre back on the transport plane and make it continue along the application line, at the end of the operations planned in the respective station.

[0079] Preferably, returning the tyre to rest on the transport plane includes lowering the support plane.

[0080] Preferably, at least said application station comprises an uncoupling system configured for uncoupling the tyre from the application conveyor belt and from the transport plane during the operations planned in the application station.

[0081] Preferably, each of said stations of the application line includes an uncoupling system configured for uncoupling the tyre from the application conveyor belt and the transport plane during the operations planned at the respective station. Preferably, said uncoupling system comprises supports defining said support plane, wherein said supports are movable to detach said tyre from the transport plane and to keep it resting on said support plane.

[0082] Preferably, provision is made for centring said tyre in abutment against said support plane with respect to the application station before performing the operations planned in the application station itself.

[0083] Preferably, provision is made for centring said tyre resting on said support plane with respect to the respective station before performing the operations planned in the station.

[0084] The Applicant believes that by uncoupling the tyre at the stations where it must undergo certain actions, it is possible to optimise transport on the one hand and the quality of the operation performed on the other, being able to count on respective optimised support planes. Additionally, uncoupling helps simplify automation and limit run times by being able to transport some tyres while others are being processed.

[0085] Preferably, at least said application station, comprises a centring system configured for centring the tyre with respect to the respective station, before performing the operations planned in the application station.

[0086] Preferably, each of said stations of the application line includes a centring system configured for centring the tyre with respect to the respective station, before performing the operations planned in the respective station.

[0087] Preferably, said centring system is configured for centring the tyre placed on the support plane.

[0088] Preferably, said centring system comprises self-centring abutments distributed circumferentially and movable radially to centre said tyre on said support plane with respect to the respective station.

[0089] The Applicant believes that centring improves the accuracy of both the application and the consolidation of the functional insert. Preferably, the application sequence comprises making adhesive said attachment surface during the transfer of the functional insert from the loading station to the application station.

[0090] Preferably, a preparation station is provided, arranged along a transfer path of the functional insert from the loading station to the application station.

[0091] Preferably, said preparation station is configured for making said attachment surface adhesive.

[0092] Preferably, the preparation station is configured for performing an action of removing a film placed to protect an adhesive layer originally intended in the functional insert or for applying an adhesive layer to the attachment surface.

[0093] Preferably, the functional insert is a housing body for a sensor.

[0094] Preferably, said sensor is mounted on said housing body after said housing body has been fixed to the tyre.

[0095] Preferably, said functional insert is a sensor means comprising a housing body and a sensor mounted on said housing body.

[0096] Preferably, said housing body and said sensor form a single body.

[0097] Preferably, said functional insert is a sound-absorbing insert.

[0098] Further features and advantages will become more apparent from the detailed description of preferred but non-exclusive embodiments of a process and related plant for fixing a functional insert to a tyre according to the present invention. Such description is given hereinafter with reference to the accompanying drawings, provided only for illustrative and, therefore, non-limiting purposes, in which: Figure 1 illustrates a schematic plan view of a functional insert for a tyre;

[0099] Figure 2 illustrates the functional insert of Figure 1 in section according to the trace II-II of Figure 1;

[0100] Figure 3 schematically illustrates a tyre arranged with its rotation axis perpendicular to the plane of Figure 3; Figure 4 illustrates the tyre of Figure 3 in section according to the trace IV-IV of Figure 3;

[0101] Figure 5 illustrates a schematic plan view of a plant for fixing a functional insert to a tyre;

[0102] Figure 6 illustrates a detail of Figure 5 corresponding to a station of the plant for fixing a functional insert to a tyre;

[0103] Figure 7 shows a further detail of Figure 5;

[0104] Figures 8 and 9 illustrate schematically and in lateral view the station of Figure 6 respectively in two operating conditions.

[0105] With reference to the accompanying figures, reference numeral 1 indicates a functional insert.

[0106] The functional insert 1 may be a sensor means comprising, for example, a housing body 2 and a sensor 3 mounted on said housing body 2 (Figures 1-3), or a housing body and a sensor mounted on said housing body in a single body, or it may be the housing body 2 alone for a sensor or another element capable of performing a function inside a tyre, for example a sound-absorbing insert.

[0107] In the case of the sensor means, the housing body 2 is preferably made of elastomeric material.

[0108] According to the example illustrated in Figure 2, the functional insert 1 has an attachment surface 4a and an exposed surface 4b facing away from the attachment surface 4a. If the functional insert 1 is a sensor means or a housing body 2 of a sensor means, the attachment surface 4a and the exposed surface 4b are preferably surfaces of the housing body 2.

[0109] The attachment surface 4a and the exposed surface 4b preferably represent the surfaces of greatest extension of the functional insert 1. In other words, the functional insert 1 has, in a direction perpendicular to the attachment surface 4a and the exposed surface 4b, a thickness smaller than the dimensions of the attachment surface 4a and the exposed surface 4b.

[0110] X indicates a central axis of the functional insert 1, perpendicular to the attachment surface 4a.

[0111] The attachment surface 4a and in general the housing body 2 can have a circular shape around the central axis X as illustrated in the accompanying figures or another shape.

[0112] The functional insert may include an orientation marker MO identifying the angular orientation of the functional insert itself and possibly reporting information relating to the type of functional insert 1.

[0113] Reference numeral 5 indicates a tyre. The term tyre refers to a moulded and vulcanised tyre.

[0114] According to the example illustrated in Figures 3 and 4, the tyre 5 has a substantially toroidal structure concentric with respect to a rotation axis Y which corresponds to the axis around which the tyre itself rotates during operation. The tyre 5 has a substantially concave radial inner surface 6 delimiting an inner cavity which, in operating conditions, is closed by a mounting ring.

[0115] With reference to a radially outer surface of the tyre, a tread band 7 and a pair of sidewalls 8 may be identified which extend radially from respective axially opposite edges of the tread band 7 towards respective beads 9 suitable for engagement on the mounting rim.

[0116] The functional insert 1 is intended to be applied at an application area A of the radially inner surface 6 of the tyre 5. Preferably, the application area A is arranged in the part of the radially inner surface 6 to which, externally, the tread band 7 corresponds.

[0117] The application area A is preferably a classified application area A of the radially inner surface 6, i.e. identifiable by certain of its features. What classifies the application area A and therefore makes it identifiable is preferably the fact of having been subjected to a cleaning action, or the fact of being in a certain position with respect to other inserts applied internally to the tyre itself. For example, the application area must not exhibit profile deformations due to the joints of the semi-finished products of the tyre.

[0118] The classified application area A is arranged on the tyre 5 in a given angular position with respect to a reference system associated with the tyre itself, around its rotation axis Y.

[0119] In this case, the tyre 5 preferably comprises an angular marker Ml associated with the angular position of the classified application area A, with respect to the reference system associated with the tyre. In fact, in the reference system associated with the tyre, the angular marker Ml constitutes a reference point with respect to which the angular position of the classified application area A is arranged at an angular distance 0, measured in a plane perpendicular to the rotation axis Y (Figure 3).

[0120] As an angular marker Ml, a mark preferably placed on one side of the tyre 5 may be used.

[0121] The angular distance 0 from the angular marker Ml may be stored.

[0122] With reference to Figure 5, reference numeral 10 indicates a plant for fixing a functional insert 1 to a tyre 5.

[0123] The plant 10 includes a loading station 11 configured for receiving the functional insert 1.

[0124] The functional insert 1 can be positioned in the loading station 11 by an operator or can reach the loading station 11 via a loading line 12 of the plant 10, for example comprising a loading conveyor belt 13.

[0125] The loading line 12 is configured for moving the functional insert according to a movement direction VI and includes the loading station 11. The loading conveyor belt 13 ends at the loading station 11.

[0126] Preferably, the loading station 11 is configured for receiving a tray 14 containing a plurality of functional inserts 1. The tray 14 can be placed in the loading station 11 by an operator or it can reach the loading station 11 via the loading line 12.

[0127] Preferably, the plant 10 comprises a first detection system Tl, for example comprising a camera or other detection devices. The first detection system Tl is arranged, for example, at loading station 11. The first detection system Tl is configured for detecting the orientation marker MO identifying the angular orientation of the functional insert 1.

[0128] Preferably, the plant 10 comprises a second detection system T2, for example comprising a camera or other detection devices. The second detection system T2 is arranged, for example, upstream of the loading station 11 according to the direction of movement VI of the functional insert 1 along the loading line 12. The second detection system T2 is configured for recognising the functional insert 1. In case trays 14 are used, the second detection system T2 is configured for recognising all functional inserts 1 present in tray 14 in transit upstream of the loading station 11.

[0129] The plant 10 further comprises an application station 15 configured for receiving the tyre 5.

[0130] The tyre 5 can be positioned in the application station 15 by an operator or can reach the application station 15 by means of an application line 16 configured for transporting the tyre 5 along a transport path and in a transport direction V2. The application line 16 comprises one or more stations, including at least the application station 15.

[0131] The application line 16 preferably includes an application conveyor belt 17 which passes through the application station 15. The application conveyor belt 17 is configured for transporting the tyre 5 in a horizontal configuration, i.e. with the rotation axis Y arranged vertically and with at least a portion of a lower sidewall 8 resting on the application conveyor belt 17.

[0132] In other words, the application conveyor belt 17 defines a horizontal transport plane PT (Figures 7-9) on which a tyre 5 transported along the application line 16 rests at at least a portion of the lower sidewall 8.

[0133] Preferably, the application conveyor belt 17 comprises two transport units 18 which run parallel and which are arranged at a transverse distance DI (Figures 6 and 7) with respect to the transport direction V2 along the application line 16.

[0134] As illustrated in Figure 7, the transverse distance DI is such as to allow the two transport units 18 to support the tyre 5 resting on the transport plane PT. Two diametrically opposed front portions Pl of the sidewall of the tyre 5 (respectively a front portion and a rear front portion with respect to the transport direction V2 along the application line 16) extend in a cantilever manner between the transport units 18. The transport plane PT is therefore discontinuous at the two front portions Pl.

[0135] The application conveyor belt 17, and in particular the two transport units 18, have an overall transverse extension D2 (Figures 6 and 7).

[0136] As illustrated in Figure 7, the overall transverse extension D2 is preferably smaller than the radial dimensions D3 of the tyre 5 but still suitable to allow the two transport units 18 to support the tyre 5 resting on the transport plane PT. Two diametrically opposed lateral portions P2 of the sidewall of the tyre 5 cantilever respectively from a transport unit 18. The transport plane PT therefore does not extend below the two lateral portions P2.

[0137] The application station 15 comprises an uncoupling system configured for uncoupling the tyre 5 from the application conveyor belt 17, i.e. from the transport plane PT during the operations planned in the application station 15.

[0138] Preferably, the uncoupling system is configured for detaching the tyre 5 from the transport plane PT, placing it in support on a support plane PS and preferably centring it in support on the support plane PS with respect to the application station itself.

[0139] The operations planned in the application station 15 are performed on the tyre 5 resting on the support plane PS. The uncoupling system is also configured for returning the tyre 5 to rest on the transport plane PT and allow it to continue along the application line 16, at the end of the operations planned in the application station 15.

[0140] The uncoupling system preferably comprises supports 19 (Figures 6, 8-9) which overall define the support plane PS (Figures 8-9).

[0141] Preferably, the supports 19 are movable between a rest position and a working position.

[0142] In the rest position of the supports 19, the tyre 5 rests on the transport plane PT and preferably the support plane PS is lower than the transport plane PT. In the working position of the supports 19, the tyre 5 rests on the support plane PS and preferably the support plane PS is higher than the transport plane PT.

[0143] When moving from the rest position to the working position, the supports 19 detach, preferably lift, the tyre 5 from the transport plane PT, placing it in support on the support plane PS.

[0144] The supports 19 (and with them the support plane PS) are moved, preferably raised, from the rest position to the working position when the tyre 5 reaches the application station 15 to perform the operations planned in the application station 15 on the tyre 5 resting on the support plane PS. At the end of these operations, the supports 19 are moved, preferably lowered, from the working position to the rest position so that the tyre 5 returns to rest on the transport plane PT and can continue along the application line 16. Preferably, the supports 19 are raised / lowered with respect to the transport plane PT only when the application conveyor belt 17 is stationary.

[0145] Preferably, the supports 19 comprise a central support 19a arranged parallel to the transport units 18 and between the transport units 18. The central support 19a may extend longitudinally along the transport units 18 so as to interact with both front portions Pl of the sidewall of the tyre 5 or it may comprise two elements arranged so as to interact each with a front portion Pl. Preferably, the supports 19 comprise two lateral supports 19b arranged so as to each interact with a respective lateral portion P2. Each lateral support 19b extends to cover a circumferential extension of the respective lateral portion P2 sufficient to support it in resting position and may comprise two or more elements distributed along such circumferential extension.

[0146] The uncoupling system preferably comprises first actuation means 20 operatively connected to the supports 19 to move them, preferably raising and lowering them, between the rest position and the working position. The first actuating means 20 may for example comprise linear actuators or cam systems and are preferably configured for generating a synchronous movement of the supports 19.

[0147] Figure 8 illustrates the rest position of the supports 19 and Figure 9 illustrates the working position of the supports 19 moved between the two positions along a vertical trajectory between the two transport units 18 (central support 19a) and externally to them (lateral supports 19b).

[0148] The application station 15 preferably comprises a centring system configured for centring the tyre 5 with respect to the application station itself before performing the operations planned in the application station 15.

[0149] Preferably, the centring system is configured for centring the tyre placed on the support plane PS.

[0150] The centring system preferably comprises self-centring abutments (Figures 6, 8-9) distributed circumferentially and movable radially between a radially expanded position and a radially contracted position.

[0151] In the radially expanded position, the centring abutments 21 are arranged to receive a tyre 5 advancing along the application line 16.

[0152] In the radially contracted position, the centring abutments 21 come into contact with the radially outer surface of the tyre 5, for example at the tread band 7, and centre it with respect to the application station 15.

[0153] The centring system preferably comprises second actuation means 22 operatively connected to the centring abutments 21 to move them radially between the radially expanded position and the radially contracted position. The second actuation means 22 may for example comprise linear actuators or cam systems and are preferably configured for generating a synchronous and self-centring movement of the centring abutments 21.

[0154] Preferably, the application line 16 further comprises an orientation station 23 arranged upstream of the application station 15 according to the transport direction V2 of the tyre 5 along the application line 16. The orientation station 23 is preferably located immediately upstream of the application station 15.

[0155] The application conveyor belt 17 crosses the orientation station 23 before passing through the application station 15. The orientation station 23 comprises an uncoupling system configured for uncoupling the tyre 5 from the application conveyor belt 17, i.e. from the transport plane PT during the operations planned in the orientation station 23.

[0156] The orientation station 23 preferably comprises a centring system configured for centring the tyre 5 with respect to the orientation station itself before performing the operations planned in the orientation station 23.

[0157] Preferably, the uncoupling system and the centring system of the orientation station 23 are similar to the respective systems provided for the application station 15 to which reference is made for the structural and functional description. In the accompanying drawings, the exemplary elements that make up the uncoupling system and the centring system of the orientation station 23 have been indicated with the same numeral reference as those that make up the respective system of the application station 15, therefore Figures 6, 8 and 9 refer indifferently to the application station 15 or to the orientation station 23. The orientation station 23 is configured for rotating the tyre 5 around its rotation axis Y to position the tyre itself and in particular the classified application area A in a predetermined angular application position P (Figure 5) with respect to a reference system associated with the application station 15.

[0158] In a plant 10 in which the tyre 5 is transported in a horizontal configuration along the application line 16 and the orientation station 23 includes the uncoupling system, the orientation station 23 preferably comprises a gripper 24 configured for grasping the tyre 5 at the upper bead 9, lifting it with respect to the support plane PS, rotating it in suspension around its own rotation axis Y and bringing it back to rest on the support plane PS. If the orientation station 23 does not include the uncoupling system, the gripper 24 lifts the tyre 5 from the transport plane PT and repositions it directly on the transport plane PT after having rotated it around the rotation axis Y.

[0159] Preferably, the orientation station 23 is accessible by an operator.

[0160] Preferably, the plant 10 comprises a third detection system T3, for example comprising a camera or other detection devices. The third detection system T3 is arranged, for example, at the entrance to the orientation station 23 or in the orientation station 23. The third detection system T3 is configured for at least detecting the angular position of the angular marker Ml.

[0161] Reference numeral 25 indicates a control unit of the plant 10 which, if the third detection system T3 is present, may be configured for storing the angular position of the classified application area A with respect to the angular marker Ml (angular distance 0).

[0162] If application area A is classified as having been subjected to cleaning action, a cleaning station configured for cleaning the application area A, for example by laser application or otherwise, is preferably located remote from the plant 10. Alternatively, the plant 10 may comprise the cleaning station functionally arranged upstream of the application line 16 or as an entry station of the application line 16. In this case, the orientation station 23 can be omitted if cleaning is performed at the predetermined angular application position P (Figure 5) and if, until the application station 15 is reached, the angular position of the tyre is kept constant with respect to the reference system associated with the application station 15. Furthermore, the third detection system T3 configured for detecting the position of the angular marker Ml can be arranged at the entrance to the cleaning station or in the cleaning station to perform cleaning at the preset application angular position P.

[0163] Preferably, the application line 16 further comprises a control station 26 arranged downstream of the application station 15 according to the transport direction V2 of the tyre 5 along the application line 16. The control station 26 is preferably located immediately upstream of the application station 15.

[0164] The application conveyor belt 17 crosses the control line 26 after passing through the application station 15.

[0165] The control station 26 comprises an uncoupling system configured for uncoupling the tyre 5 from the application conveyor belt 17, i.e. from the transport plane PT during the operations planned in the control station 26. The control station 26 preferably comprises a centring system configured for centring the tyre 5 with respect to the control station itself before performing the operations planned in the control station 26.

[0166] Preferably, the uncoupling system and the centring system of the control station 26 are similar to the respective systems provided for the application station 15 to which reference is made for the structural and functional description. In the accompanying drawings, the exemplary elements that make up the uncoupling system and the centring system of the control station 26 have been indicated with the same numeral reference as those that make up the respective system of the application station 15, therefore Figures 6, 8 and 9 refer indifferently to the application station 15 or to the control station 26.

[0167] The control station 26 is configured for performing a quality control on the functional insert 1 fixed to the tyre 5 to detect the presence of any defects, for example the presence of bubbles or errors in the positioning of the functional insert 1 with respect to the classified application area A. Preferably, the control station 26 comprises a fourth detection system T4, for example comprising a camera or other detection devices, configured for performing quality control.

[0168] The plant 10 further comprises a first handling device 27 and a second handling device 28. The first handling device 27 and / or the second handling device 28 may be made by anthropomorphic robots with at least 4 rotation axes, preferably 6 rotation axes, or by Cartesian handling devices with a rotary axis for the angular phasing of the functional insert 1.

[0169] The first handling device 27 is operatively interposed between the loading station 11 and the application station 15 and therefore between the loading line 12 and the application line 16.

[0170] The first handling device 27 is configured for performing an application sequence on the functional insert 1.

[0171] The application sequence comprises: removing the functional insert 1 from the loading station 11, transferring the functional insert 1 from the loading station 11 to the application station 15 along a transfer path and in a transfer direction V3, adhering the attachment surface 4a of the functional insert 1 to the application area A of the tyre 5 arranged in the application station 15, releasing the functional insert 1 adhered to the application area A and returning to the loading station 11.

[0172] Preferably, the application area A to which the first handling device 27 adheres the attachment surface 4a of the functional insert 1 is a classified application area A.

[0173] Preferably, the first handling device 27 is configured for causing the attachment surface 4a of the functional insert 1 to adhere by exerting a thrust action on the functional insert 1 against the application area A of the tyre 5.

[0174] Preferably, the first handling device 27 is configured for making the attachment surface 4a of the functional insert 1 adhere to the application area A of the tyre 5 arranged in support on the support plane PS.

[0175] The second handling device 28 is associated with the application station 15 and therefore with the application line 16.

[0176] The second handling device 28 is configured for performing a consolidation sequence on the functional insert 1.

[0177] The consolidation sequence comprises exerting a moving pressing action against the exposed surface 4b of the functional insert 1 adhered to the application area A of the tyre 5 so as to consolidate the adhesion of the attachment surface 4a of the functional insert 1 to the application area A of the tyre 5.

[0178] The second handling device 28 is configured for initiating the consolidation sequence on the functional insert 1 while the first handling device 27 returns to the loading station 11 at the end of the aforementioned application sequence, or while said first handling device 27 begins to perform a subsequent application sequence on a subsequent functional insert la (as will be better illustrated below).

[0179] The second handling device 28 is configured for ending the consolidation sequence on the functional insert 1 before said first handling device 27 in said next application sequence transfers said next functional insert la to the application station 15.

[0180] The second handling device 28 is preferably configured for performing the consolidation sequence on the functional insert 1 while the tyre 5 is in the application station 15. The second handling device 28 is preferably configured for performing the consolidation sequence on the functional insert 1 while the tyre 5 is arranged to rest on the support plane PS.

[0181] The second handling device 28 is preferably configured for performing a circumferential pressing sub-action wherein the second handling device itself exerts a rotational pressure about the central axis X of the functional insert 1.

[0182] Preferably, the second handling device 28 comprises a blade member, not illustrated, configured for performing the circumferential pressing sub-action.

[0183] The second handling device 28 is preferably configured for exerting a radial pressing sub-action wherein the second handling device itself exerts a radial sliding pressure away from the central axis X of the functional insert 1.

[0184] Preferably, the second handling device 28 comprises a rolling member configured for performing the radial pressing subaction.

[0185] The second handling device 28 is preferably configured for performing the circumferential pressing sub-action prior to the radial pressing sub-action.

[0186] The blades member and the rolling member are preferably configured so that the blades member operates at a circumferential portion C (Figure 1) of the functional insert 1 close to the central axis X (arrow Fl in Figure 1) and the rolling member operates starting from the central portion C away from the central axis X (radial arrows F2 in Figure 1). Preferably, the plant 10 comprises a preparation station 29 arranged along the transfer path of the functional insert 1 from the loading station 11 to the application station 15.

[0187] The preparation station 29 is configured for making the attachment surface 4a adhesive. To this end, the preparation station 29 may be configured for performing an action of removing a film placed to protect an adhesive layer originally intended in the functional insert 1 or for applying an adhesive layer to the attachment surface 4a.

[0188] The adhesive is preferably of the pressure-sensitive type (PSA - Pressure Sensitive Adhesive).

[0189] If the functional insert 1 is a housing body 2, the plant 10 preferably comprises an association station, not shown, downstream of the application station 15 according to the transport direction V2 and configured for mounting the relevant sensor 3 on the housing body 2 after the housing body 2 has been fixed to the tyre 5.

[0190] The plant 10 is configured for implementing a process for fixing a functional insert 1 to a tyre 5.

[0191] The tyre 5 is introduced into the application line 16 and transported by it, preferably in a horizontal configuration, until it is arranged in the application station 15.

[0192] Preferably, a plurality of tyres is introduced sequentially onto the application line 16.

[0193] If the application area A is classified, the tyre 5 is arranged in the application station 15 so that the classified application area A is arranged in the predetermined angular application position P with respect to the reference system associated with the application station 15. For this purpose, the tyre 5 is rotated around its rotation axis Y, preferably along the application line 16 and even more preferably in the orientation station 23, if present. The rotation of the tyre 5 around its rotation axis Y is performed on the basis of the position of the angular marker Ml and on the basis of the angular distance 0. The position of the angular marker Ml is detected at the entrance to the application line 16 or at the entrance to the orientation station 23 or in the orientation station 23. The angular distance 0 is, for example, stored in the control unit 25 of the plant.

[0194] If the application area A is classified as being subject to a cleaning action, such cleaning action can be performed in the plant 10 and, if performed directly at the predetermined angular application position P, it is not necessary to rotate the tyre 5 around its rotation axis Y if, until reaching the application station 15, the angular position of the tyre is kept constant with respect to the reference system associated with the application station 15.

[0195] The functional insert 1 is introduced into the loading line 12 and moved by it until it is arranged in the loading station 11. Preferably, the insert 1 is arranged in the loading station 11 carried by a tray 14 together with a plurality of functional inserts 1 or a plurality of functional inserts 1 are introduced sequentially on the loading line 12 to be arranged sequentially in the loading station 11.

[0196] The first handling device 27 performs the application sequence on the functional insert 1, i.e. it picks up the functional insert 1 from the loading station 11, transfers the functional insert 1 from the loading station 11 to the application station 15 along the transfer path and in the transfer direction V3, makes the attachment surface 4a of the functional insert 1 adhere to the application area A of the tyre 5 arranged in the application station 15 preferably by exerting a pushing action on the functional insert 1 against the application area itself, releases the functional insert 1 adhered to the application area A of the tyre 5 and returns to the loading station 11. Preferably, before being applied to the application area A, the functional insert 1 is angularly oriented according to a predetermined angular orientation around the central axis X. The angular orientation of the functional insert 1 is based on the angular position of the orientation marker MO preferably detected in the loading station 11.

[0197] Preferably, the first handling device 27 picks up the functional insert 1 with the central axis X arranged vertically and, before applying it to the application area A, rotates it by 90° so that the central axis X is arranged horizontally.

[0198] The first handling device 27 transfers the functional insert 1 from the loading station 11 to the application station 15 preferably passing through the preparation station 29 downstream of which, according to the transfer direction V3, the attachment surface 4a is adhesive. For this purpose, in the preparation station 29, an action can be performed to remove a film placed to protect an adhesive layer originally provided in the functional insert 1 or an action to apply an adhesive layer on the attachment surface 4a.

[0199] While the first handling device 27 returns to the loading station 11 at the end of the aforementioned application sequence, or while the first handling device 27 begins to perform a subsequent application sequence on a subsequent functional insert, the second handling device 28 begins the consolidation sequence in which it exerts a moving pressing action against the exposed surface 4b of the functional insert 1 adhered to the application area A of the tyre 5 so as to consolidate the adhesion of the attachment surface 4a of the functional insert 1 to the application area A of the tyre 5. Preferably, the consolidation sequence is performed while the tyre 5 is in application station 15.

[0200] Preferably, the moving pressing action is divided into a circumferential pressing sub-action and a radial pressing subaction, preferably performed by rolling. Alternatively, only one of the circumferential pressing sub-action and the radial pressing sub-action may be provided.

[0201] If both circumferential pressing sub-action and radial pressing sub-action are provided, the circumferential pressing subaction is performed before the radial pressing sub-action.

[0202] Preferably, the circumferential pressing sub-action is performed at a circumferential portion C of the functional insert 1 close to the central axis X (arrow Fl in Figure 1) and the radial pressing sub-action is performed starting from the circumferential portion C moving away from the central axis X (radial arrows F2 in Figure 1).

[0203] Preferably, the predetermined angular application position P remains fixed with respect to a reference system associated with the application station 15 during the execution of the application sequence and of the consolidation sequence on the functional insert 1.

[0204] After having released the functional insert 1 adhered to the application area A of the tyre 5 and having returned to the loading station 11, the first handling device 27 performs said subsequent application sequence on said subsequent functional insert la arranged in the loading station 11 (Figure 5). What is described and claimed with reference to functional insert 1 also applies to the subsequent functional insert la.

[0205] Preferably, while the second handling device 28 finishes the consolidation sequence on the functional insert 1, the next application sequence on the next functional insert la has been started in which the first handling device 27 has at least picked up the next functional insert la from the loading station 11.

[0206] At the end of the consolidation sequence on the functional insert 1, the tyre 5 is moved away from the application station 15, preferably along the application line 16. In the application station 15, a subsequent tyre is arranged which, for clarity of explanation, has been indicated with the numeral reference 5a and which preferably comes from the application line 16. In particular, the next tyre 5a is the tyre immediately available upstream of the application station 15 according to the transport direction V2, for example the one exiting from the orientation station 23 if present. What is described and claimed with reference to tyre 5 also applies to the subsequent tyre 5a.

[0207] Preferably, a final step of the subsequent application sequence is performed on the subsequent functional insert la in which the first handling device 27 , after having transferred the subsequent functional insert la from the loading station 11 to the application station 15, causes the attachment surface 4a of the subsequent functional insert la to adhere to the application area A of the radially inner surface 6 of the subsequent tyre 5a now arranged in the application station 15, releases the subsequent functional insert la adhered to the application area A and returns to the loading station 11. Preferably, the predetermined angular application position P is fixed with respect to a reference system associated with the application station 15 during the execution of the application sequence and of the consolidation sequence on the functional insert 1 and during the execution of the subsequent application sequence and consolidation sequence on the subsequent functional insert la.

[0208] Preferably, provision is made for performing a quality control on the functional insert 1 fixed to the tyre 5 to detect the presence of any defects, for example the presence of bubbles or errors in the positioning of the functional insert 1 with respect to the classified application area A. The quality control may be performed at the exit of the application station 15, along the application line 16, for example in a control station 26 arranged downstream of the application station 15 according to the transport direction V2.

[0209] At least in the application station 15, preferably in each station of the application line 16, it may be provided to uncouple the tyre 5 from the application conveyor belt 17, i.e. from the transport plane PT, during the operations planned in the respective station. For this purpose, it may be possible to detach the tyre 5 from the transport plane PT, place it resting on a support plane PS, perform the operations planned in the respective station on the tyre 5 resting on the support plane PS and, at the end of the operations planned in the application station 15, return the tyre 5 resting on the transport plane PT and allow it to continue along the application line 16.

[0210] To detach the tyre 5 from the transport plane PT, it is possible to lift the support plane PS with respect to the transport plane PT so as to place the tyre 5 resting on the support plane PS and lift it from the transport plane PT. At the end of the operations planned in the respective station, the tyre 5 rests on the transport plane PT, lowering the support plane PS.

[0211] At least in the application station 15, preferably in each station of the application line 16, before performing the operations planned in the respective station, it may be provided to centre the tyre 5, preferably resting on the support plane PS, with respect to the respective station.

[0212] If the functional insert 1 is a housing body 2, it is preferably provided to mount the corresponding sensor 3 on the housing body 2 after the housing body 2 has been fixed to the tyre 5, for example downstream of the application station 15 according to the transport direction V2.

Claims

CLAIMS1. Process for fixing a functional insert to a tyre comprising: arranging, in an application station (15), a tyre (5), wherein said tyre has a radially inner surface (6); arranging, in a loading station (11), a functional insert (1), wherein said functional insert (1) has an attachment surface (4a) and an exposed surface (4b) directed opposite the attachment surface (4a); performing an application sequence on said functional insert (1) wherein a first handling device (27) picks up said functional insert (1) from the loading station (11), transfers said functional insert (1) from the loading station (11) to the application station (15), adheres the attachment surface (4a) of said functional insert (1) to an application area (A) of the radially inner surface (6) of the tyre (5) arranged in the application station (15), releases said functional insert (1) adhered to the application area (A) and returns to the loading station (11); performing a consolidation sequence comprising exerting a moving pressing action by a second handling device (28) against said exposed surface (4b) of said functional insert (1) adhered to the application area (A) so as to consolidate the adhesion of the attachment surface (4a) to the application area (A), wherein the consolidation sequence begins while said first handling device (27) returns to the loading station (11) at the end of said application sequence, or while said first handling device (27) begins to perform a subsequent application sequence on a subsequent functional insert (la), and endsbefore said first handling device (27) in said subsequent application sequence transfers said subsequent functional insert (la) to the application station (15).

2. Process according to claim 1, wherein said first handling device (27) adheres the attachment surface (4a) of said functional insert (1) to the application area (A), by exerting a thrust action on said functional insert (1) against the application area itself.

3. Process according to claim 1 or 2, wherein said consolidation sequence on said functional insert (1) is performed while said tyre (5) is in said application station (15).

4. Process according to one or more of the preceding claims, comprising: arranging, in the loading station (11), said subsequent functional insert (la) having an attachment surface (4a) and an exposed surface (4b) directed opposite the attachment surface (4a); picking up, from the loading station (11), said subsequent functional insert (la) by said first handling device (27), while said second handling device (28) ends the consolidation sequence on said functional insert (1).

5. Process according to claim 4, comprising: moving said tyre (5) away from the application station (15) at the end of the consolidation sequence on said functional insertarranging, in the application station (15), a subsequent tyre (5a) having a radially inner surface (6); performing a final step of the application sequence on said subsequent functional insert (la) wherein the first handling device (27) at least adheres the attachment surface (4a) of said subsequent functional insert (la) to an application area (A) of the radially inner surface (6) of the subsequent tyre (5a) arranged in the application station (15), releases said subsequent functional insert (la) adhered to the application area (A) and returns to the loading station (11).

6. Process according to one or more of the preceding claims, wherein said moving pressing action comprises a sub-action of circumferential pressing wherein said second handling device (28) exerts a pressure in rotation around a central axis (X) of said functional insert (1), perpendicular to said attachment surface (4a).

7. Process according to one or more of the preceding claims, wherein said moving pressing action comprises a sub-action of radial pressing, wherein said second handling device (28) exerts a pressure in radial sliding away from a central axis (X) of said functional insert (1), perpendicular to said attachment surface (4a).

8. Process according to claim 7, wherein said sub-action of radial pressing is performed by rolling.

9. Process according to claim 7 or 8 when dependent on claim 6, wherein said sub-action of circumferential pressing is performed before said sub-action of radial pressing.

10. Process according to claim 9, wherein said sub-action of circumferential pressing is performed at a circumferential portion (C) of the functional insert (1) close to the central axis (X) and said sub-action of radial pressing is performed starting from said circumferential portion (C) away from the central axis (X).

11. Process according to one or more of the preceding claims, wherein said application area (A) is a classified application area (A) arranged in a specific angular position with respect to a reference system associated with the tyre (5), around a rotation axis (Y) of the tyre itself.

12. Process according to claim 11, comprising rotating the tyre (5) around the rotation axis (Y) thereof in order to position the classified application area (A) in a predetermined angular application position (P) with respect to a reference system associated with the application station (15).

13. Process according to claim 12, wherein said predetermined angular application position (P) remains fixed with respect to a reference system associated with the application station (15) during the execution of the application sequence and of the consolidation sequence on said functional insert (1).

14. Process according to claim 12 or 13, wherein said predetermined angular application position (P) is fixed with respect to a reference system associated with the application station (15) during the execution of the application sequence and of the consolidation sequence on said functional insert (1) and during the execution of the subsequent application sequence and consolidation sequence on a subsequent functional insert (la).

15. Process according to one or more of claims 11 to 14, comprising detecting an angular marker (Ml) associated with the angular position of the classified application area (A) with respect to a reference system associated with the tyre (5), before rotating said tyre (5) around the rotation axis (Y) thereof in order to position said classified application area (A) in the predetermined angular application position (P) with respect to a reference system associated with the application station (15).

16. Process according to one or more of the preceding claims, wherein arranging a tyre (5) in an application station (15) comprises transporting said tyre (5) along an application line (16) which comprises one or more stations, including at least said application station (15).

17. Process according to claim 16, wherein said tyre (5) is transported along said application line (16) with rotation axis (Y) arranged vertical and with a lower side (8) abuttedagainst an application conveyor belt (17) defining a transport plane (PT).

18. Process according to claim 17, comprising, at said application station (15), detaching said tyre (5) from the transport plane (PT), arranging it in abutment against a support plane (PS) and performing, on the tyre (5) in abutment against the support plane (PS), the operations planned in the application station (15), wherein detaching said tyre (5) from the transport plane (PT) comprises lifting said support plane (PS) with respect to said transport plane (PT) such to arrange said tyre (5) in abutment against the support plane (PS) and lift it from said transport plane (PT).

19. Process according to claim 18, comprising centring said tyre in abutment against said support plane (PS) with respect to the application station (15) before performing the operations planned in the application station itself.

20. Process according to one or more of the preceding claims, wherein the application sequence comprises making adhesive said attachment surface (4a) during the transfer of the functional insert (1) from the loading station (11) to the application station (15).

21. Process according to one or more of the preceding claims, wherein said functional insert (1) is one from among: a housing body (2) for a sensor (3) and wherein said sensor (3) is mounted on said housing body (2) aftersaid housing body (2) was fixed to the tyre (5), a sensor means comprising a housing body (2) and a sensor (3) mounted on said housing body (2), a sound-absorbent insert.

22. Plant (10) for fixing a functional insert to a tyre comprising: an application station (15) configured for receiving a tyre (5) having a radially inner surface (6); a loading station (11) configured for receiving a functional insert (1), wherein said functional insert (1) has an attachment surface (4a) and an exposed surface (4b) directed opposite the attachment surface (4a); a first handling device (27) configured for performing an application sequence on said functional insert (1) comprising: picking up said functional insert (1) from the loading station (11), transferring said functional insert (1) from the loading station (11) to the application station (15), adhering the attachment surface (4a) of said functional insert (1) to an application area (A) of the tyre (5) arranged in the application station (15), releasing said functional insert (1) adhered to the application area (A) and returning to the loading station (11); a second handling device (28) configured for performing a consolidation sequence on said functional insert (1) which begins while said first handling device (27) returns to the loading station (11) at the end of said application sequence, or while said first handling device (27) begins to perform a subsequent application sequence on a subsequent functionalinsert (la), and ends before said first handling device (27) in said subsequent application sequence transfers said subsequent functional insert (la) to the application station (15), said consolidation sequence comprising exerting a moving pressing action against said exposed surface (4b) of said functional insert (1) adhered to the application area (A) so as to consolidate the adhesion of the attachment surface (4a) of said functional insert (1) to the application area (A).

23. Plant according to claim 22, wherein said second handling device (28) comprises a blades member configured for performing a sub-action of circumferential pressing wherein said second handling device (28) exerts a pressure in rotation around a central axis (X) of said functional insert (1), perpendicular to said attachment surface (4a).

24. Plant according to claim 22 or 23, wherein said second handling device (28) comprises a rolling member configured for performing a sub-action of radial pressing wherein said second handling device (28) exerts a pressure in radial sliding away from a central axis (X) of said functional insert (1), perpendicular to said attachment surface (4a).

25. Plant according to one or more of claims 22 to 24, comprising an application line (16) configured for transporting said tyre (5), wherein said application line comprises one or more stations, including at least said application station (15).

26. Plant according to claim 25, wherein said application line(16) comprises an application conveyor belt (17) configured for moving said tyre (5) with vertical rotation axis (Y) and with a lower side (8) abutted against said application conveyor belt (17) defining a transport plane (PT).

27. Plant according to claim 26, wherein at least said application station (15) comprises an uncoupling system configured for uncoupling the tyre (5) from the application conveyor belt (17) and from the transport plane (PT) during the operations planned in the application station (15).

28. Plant according to claim 26, wherein at least said application station (15), comprises a centring system configured for centring the tyre (5) with respect to the respective station, before performing the operations planned in the application station (15).

29. Plant according to one or more of claims 25 to 28, wherein said one or more stations of the application line (16) also comprise an orientation station (23) arranged upstream of said application station (15) according to a transport sense (V2) of the tyre (5) along the application line (16) and wherein said orientation station comprises a gripper (24) configured for grasping the tyre (5) at the upper bead (9), lifting it and rotating it in suspension around the rotation axis (Y) thereof in order to position a classified application area (A) of the tyre (5) in a predetermined angular application position (P) with respective to a reference system associated with the application station (15).

30. Plant according to one or more of claims 22 to 29, comprising a preparation station (29) arranged along a transfer path of the functional insert (1) from the loading station (11) to the application station (15), wherein said preparation station (29) is configured for making adhesive said attachment surface (4a).

Images