CS223872B2 - Automatic facility for continuous coating of elastomere fillings on the type cores - Google Patents

Abstract

The machine is fitted with a device to fix the filler piece sides near the two ends of the piece, and a device for the butt splicing of the two ends. The machine consists of two discs which contact each other on the periphery. The lower disc holds the bead core in an annular groove. An annular slot in the top disc locates the upper part of the triangular filler piece. A pair of pressure elements fix the opposing sides of the filler piece near each end. A device to complete their butt joint includes pairs of arms. A getting and centring device ensures that the ends are joined only if the length of the elastomer protruding from the arms to the ends is >=0.5 mm. This saves labour for the mutual arrangement of bead core and filler piece and ensures a uniformly good joint.

Description

The invention relates to a continuous -equipment applying elastomeric fillers to tire core comprises evný ^p - R ^and m ^are erým ^kt ith ^o u ^y association two discs in vzájemirém ^yk st u ^p from ^e l ^b jepch of water from ^the rncbž prvm Otto ^C has a first annular groove for receiving the core and the second disc has a second annular groove, into which it is inserted the upper part of the filler in the tangential direction.

^From ejména in ^y n and ^l ez relates confusion er ^ ^kt · ^E is capable of automatically and smoothly applied on the outer surface of the core rotujícího- filler that is part of a continuous strip of uncured material elastomerového- gradually rozřezávaného -na multiple sections obtained by cutting ^- perpendicular : the direction Ostu ^{p p p} in time and having a length equal to the circumferential contour of the outer core surface.

As is known, when constructing the tire near the bead cores around et adjusts filler of elastomeric material having obvykle- triangular shape and has ^{as chemical} and physic ^to alni vtestnosH -from n ^{e is too} vtestností forming substances from the sides of the tire and the bead.

Typically, the filler is made of an elastomeric compound having a greater hardness than that of the siderails; has a dual role ^ namely fill ^{in some width} j ^Fr SMO ^Aad j r, and ^b y the zabránilo- height ^Y mod (íuchových pockets during cord carcass layers around the ^Aad j and r to ^p atce uplila determined tenacity.

It is also known a system for the location of the belt elastomer-rove ^h Material Kotem ^Aad j r Embedded DO- vhodného- válcového- saddle. Tomto- In case the first strip is cut to the same administered ^d olními and upper edges. Then the band will sense the hand placed on the ⁿ handy after ý annular ^dp Erny povrc ^h coaxial with the cylindrical seat core.

Next, the worker manually folded strip in such a way that its lower edge · přilne- to the nucleus and acts on both opposite ends of opposing tensile forces, since both opposite ends ^of the ^UCI are opened -sob no ^b ot the upper edge m ^and equal (watching TV as lower and is located on the circumferential line of greater radius.

In case tomto- disadvantageous effect a manual pulling force on both ends of the filler, which m ^can have in the ^ p & outpu ^ tf nežnoucí namely the irregular and inefficient connection -například of ^Du as ^Importan not host-TKU eteistomerového- material at both ends of the filler featured to blunt-joint.

This situation is particularly disadvantageous in terms of other structures of the tire, since a ^ i ^ i ^ Vivid regular connections can be hidden defect, it ^{iz d} foregone ^{thanks to also} appear pos ^ j · ^ either in alders manufacturing · step or, which is even more unfavorable when the tire is mounted and moved on the vehicle.

It would be possible to overcome this disadvantage by using a filler whose length varies from its base to the upper one, namely essentially an isosceles trapezoid whose smaller base has a length corresponding to the outer surface of the core and whose larger base corresponds to the length of the circumferential line, whose radius is the result of the sum of the core radius and the fill height.

In this case, both ends of the packing wrapped around! the cores lead - from a purely theoretical standpoint - to an exact arrangement side by side and in contact with each other.

However, even this solution has the disadvantage that it provides a connection between both ends of the filler, which in many cases is inappropriate.

In practice, this negative result depends on the fact that a perfect match between the two ends of the filler leads to the fact that the worker acts on these ends with only a slight pull; therefore, since good compression is not obtained between the uncured elastomeric materials at both ends, the resulting bond is not completely reliable.

Therefore, the latter solution tends to lead to the disadvantages found in the first solution.

On the other hand, it is evident that the above working systems have a further economic disadvantage, since both systems are based on the use of labor to deploy the core, insert the filler to the core and finally remove the finished product.

The purpose of the invention is to provide an automatic device capable of applying an elastomeric filler to the core, wherein the length of the top and bottom edges of the filler is the same and corresponds to the outer contour of the core and the insertion of the filler onto the core is automatic.

According to the invention, the automatic device for continuously applying elastomeric fillers to the tire cores comprises a coupling means for connecting opposite ends of the filler and two pairs of two thrust members disposed symmetrically with respect to the plane in which the groove of the first disc lies. connected to the coupling device.

According to a preferred embodiment of the invention, the device comprises a geometrically shaped body having at least two sides forming a V-shaped body and a lever, one end of which is connected to the body and the other end articulated on the frame, the plane of symmetry of both sides of the body coincides with the center plane of symmetry between the pairs of pusher members, the body being associated with the control unit.

In a preferred embodiment of the device having the above characteristics, each pair of thrust members comprises two arms, the ends of which are associated with the first and second ratchets, respectively engaging and symmetrical with respect to the median plane of the first disc holder. with a piston of a fluid-dynamic cylinder which is connected externally to the coupling device.

Suitably, the two arms of two pairs of thrust members arranged on the same side of the center plane are inclined relative to each other.

According to a further embodiment of the invention, each pair of thrust members with respective ratchets, piston and fluid cylinder is integral with a carrier attached to the first end of the lever, the second end of which is attached to a pin whose axis of rotation is parallel to the axis of the first disc. a lateral axis of rotation of the two levers with which the two carriers are coupled to the two pairs of thrust members and which is additionally attached to the fixed frame, the two carriers being subjected to opposite pressures through the coupling device.

According to another embodiment of the invention, the coupling for opposing ends of the padding comprises two additional levers, third and fourth, which are located by their pivot centers on the frame p along the axes parallel to the axis of the first disc and in symmetrical position relative to the radial plane to the first disc and between the two pairs of thrust members, the first end of the third and fourth levers being associated with fluid-dynamic control and the second ends of the third and fourth levers being provided with pins which can be inserted into suitable grooves of the two carriers.

Suitably, the device according to the invention comprises an annular seat formed as a step and formed on the peripheral surface of the first disk as well as a surface formed as a circular ring and disposed on the peripheral zone of the flange coaxial to the first disk. a step for forming an annular seat and lateral blocking of the core, wherein the flange and disc are mutually movable in the direction of the axis of the first disc.

According to another embodiment, the device according to the invention comprises within the second groove of the second disc two opposing annular edges whose mutual distance, measured parallel to the axis of the second disc, is smaller than the transverse dimension of the filler. These edges are preferably provided with a knurled surface.

According to another embodiment, the body forming the formation "V" is located in the first station, the coupling device and both pairs of thrust members are located in the second station, and that a motor is provided to rotate the first disc between the stations.

Preferably, the device comprises a third additional sensing station.

The invention will now be explained in more detail by way of example with reference to the drawings.

Giant. 1 shows a front view of the device.

Giant. 2 schematically illustrates the process of a continuous web prior to its placement on a core, as well as the cross-section of the web.

Giant. 3 is a partial cross-sectional view of the two disks of the apparatus of FIG. 1.

Giant. 4 schematically shows, by means of dashed lines, means for blocking opposite open ends of the filler on the core and means for connecting these ends to the core. after, when the device makes their connection; Fig. 4 shows these lines in solid lines near only one end of the filler before joining the two ends thereof;

The device according to the invention shown in Fig. 1 is described in connection with applying an elastomeric filler 2 around the bead core 3.

The filler 2 forms part of a continuous web L (FIG. 2) of uncured material having a cross-section K with a base 4 and an upper portion of a preformed shape, for example a triangular shape with opposite sides 5, 6.

This continuous belt is already separately prepared, for example by an extruder, and is gradually stored together with the other belts in a suitable supply plane. Thereafter, the strip, held in a sticky state, is displaced towards the device 1 and is successively cut into a plurality of sections, each obtained by a cut perpendicular to the direction of displacement of the strip and having a length equal to the circumferential contour of the outer surface 3 'of the core 3.

The device 1 comprises a fixed frame 7, Fig. 5, with which two disks 8, 9 are associated, whose axes are parallel to the horizontal plane of the floor and whose circumferential zones 10, 11 (Fig. 3) are in contact with each other so that they rotate simultaneously. by the action of any drive device which can be associated with one of the other discs.

The first disk 8 comprises an annular groove 12 for receiving the core 3; the second disc 9 comprises a second annular groove 13 in which the upper part of the packing coming from a suitable conveyor belt (not shown) located in front of the device 1 slides in a tangent direction.

Core; 3 is firmly attached to the first disc 8 by a suitable clamping device 14 (FIG. 3), which is capable of both retaining the core 3 already provided with a liquid substance to cause adhesion of the non-extruding filler.

This gripping device is essentially constituted by (FIG. 3) an annular seat 15 formed as a step made on the peripheral surface 16 of the first disc, and a surface 17 formed as ^{: an} annular ring located on the peripheral zone 18 of the flange 19 coaxial to the first disc.

The flange 19 is assigned to the first disc, since the annular ring is opposed to said step so as to form an annular groove 12 for receiving the core.

The flange 19 and the first disc are reciprocatingly movable in the direction oisy 1 of the first disc to initiate blockage of the core or removal of the same core with the respective filler.

Both the description and the figures refer to a core having a square or rectangular cross section; however, the invention is also applicable to cores of other cross-sections, for example hexagonal or round, on which fillers whose base has a corresponding shape are to be placed in order to achieve satisfactory adhesion.

In all of the above cases, the annular seat of the first disc and the flange of the housing form the respective core.

In addition, it will be appreciated that the means for inducing both displacement and locking of the first disc and flange may consist, for example, of any oil-dynamic control of known type, so that, for the sake of simplicity of description, these means will not be considered here.

The second disk 9 comprises localized compression aids 20, FIG. 3, acting on opposite sides 5, 6 of the filler extending through the second annular groove 13. These localized compression aids 20 comprise two annular edges 21, 22 in the opposite position and at a distance h, measured parallel to the axis of the second disc, which distance is less than the transverse dimension of the filler extending therebetween.

These edges are intended to bring the filler base 4, pressed tangentially to the periphery of the second disk ¹ , onto the outer surface 3 'of the core 3 to cause it to adhere to the core.

These annular edges 21, 22 additionally have knurled surfaces to facilitate pre-slipping and application of the filler.

The parts of the apparatus described so far are those required to apply the filler and the overall core coverage of the filler base.

The device further comprises means for separating the two discs away from each other to permit easy removal of the core ¹ with an appropriate filler. These aids do not form a substantial part of the invention, so it is sufficient to mention here that the second disk 9 can be moved from the first disk while keeping its axis parallel to the horizontal plane while any lifting device capable of shifting both shaft ends into suitable frame grooves (not shown). In this way, it is then possible to separate the flange 19 from the annular seat 15 of the first disc and remove the core with the filler.

The device 1 comprises further parts important for the purposes of the invention which are adapted to achieve the connection of opposite ends of the filling ring, the base of which completely covers the core.

These sides are spaced apart in po223872 time unit "V" as the length of the upper portion of the filler is equal ^dé LCE thereof from ^and positively ^{y d} foregone ^{d k} at that ^Fr L b ^yl pronznut Mmo ^e direction of its advance.

^You do · ^'d and ^{LSI mine} e ^fo t ^{é CA} STI consisting of a locking · outfit ^{at 23} (FIG. 1) ^P ro Noková opposite side of the panel near each end 24, 25 of the body "V" and means for · joining these · Butt ends 24, 25.

The locking device 23 comprises two pairs of pressing members, each of which acts on only one of opposite sides of the filler in Mízkosti Once ^the body ^{"in the"} I i O ^{from the} two respective first and second mechanisms for creating pressure in each opposing pair.

The coupling aids 26 · jointing butted comprise at least one third mechanism 26 '(FIG. 4] · exerting antisense pressures on the two pairs of pushing members ^Pooh with ^b ICIC ^h above ^pl ò. ^You do button ^N N ^{E c} only ^y one pair, preferably two arms 30, 31 (a ^b r. 5 ^j · are arranged ^order Erasing ^y navz ^JEM symmetrically with respect to the median plane X-X of the filler and at a predetermined distance from the filler when · a first disk having a core 3 rotates.

The two arms 30, 31 are provided with two surfaces 32 and 33 for applying pressure to the elastomeric material and the first tines ^34, 35, which are associated with the rod and the second ratchet 36 and 37, respectively, are symmetrical with respect to the central the X-X plane of the filler and have parallel axes that lie in a single Y-Y plane perpendicular to the X-X plane.

The second ratchet 37 has a rotatable shaft 38 coupled to a rod 39 associated with a piston 40 slidable in the fluid-dynamic cylinder 41, forming part of the first mechanism for applying counter-pressure to both arms 30, 31. The fluid-dynamic cylinder 41 is connected externally to the third mechanism 26 26, as will be explained in more detail below.

The legs 31, 31 'of the two pairs on the same side of the filler (Fig. 1) together form an angle and a straight ^angle at the gripped end of the filler formation V ^, and the extensions A and B of these legs intersect at point C BHZ than ^{width b} of which ^runs te top body E ^{'V' pl} above ^some at ^Aad j ru.

The position C is preferably such that a certain amount of the ester-like material - which measured at least circumferentially at least 0.5 mm - remains between the ends 24, 25 of the formation "V" and the position of the arms.

Toto- ^RE measurement is most preferred ^{width d p} ro permit a · ^b Reho stíačem utósrání bride and ^y toughened elastomeric ^h o · .materiálu between opposite ends 24, 25 of body "in the" filler which were themselves ^EXAMPLE stigma ^y using third method 26 '.

According to the above-mentioned preferred embodiment of the device 1, Fig. 5, both arms 30, 31 and the fluid-dynamic cylinder 41 of the pair are integrally formed with the carrier 42 (Figs. 4, 5), for example having a parallelepiped shape. and which in turn is firmly connected (FIG. 4) to the first end 43 of the lever

44, the second end 45 of which rotates about a pin 46 whose axis of rotation is parallel to the axis of the first disc.

Similarly, the second pair of arms and a cylinder for · the ^yk on ^and the cooking upstream ^ Tiak on this · shoulders, said · parts are made integral with a · second · carrier 47 (FIG. 4) connected with the second lever 48 rotating around same as the first pin 46 of lever 44. a pin 46, around which the levers rotate, is arranged at its end 49 ^{kp p} evněným- evnému frame ⁷ (a ^b r. ^5).

The two supports 42, 47 are, moreover, · connected to a coupling device for coupling above ^pl these two butt · different from ^p йsobem ^{That KŽ} e ^kd YZ arms of each pair acts on the elastomer fill, causes the mutual approach of carriers ^{CU 42 47} P ^U tions with ^b · ^h mec third anismu ²⁶ 'approach each other opposing ends ^{at 24, 25 tu} boiling ^"V" filler.

According to a preferred embodiment, the device 1 comprises two further levers, namely a third lever 50 and a fourth lever 51, whose pivot points 52 and 53 are located on the frame, the pivot axes of which are parallel to the axis of the first disc. deposited on the third mechanism 26 ', a fluid in substantial TVOne ^dy NAMIC ^{Ké řízeiní,} and the second ends 56 or 57 are provided with studs 58 (OHR. 4, 5) sliding into suitable grooves 58 · two supports. These pins are preferably associated with sliding blocks 59 '(FIG. 4).

The aforementioned preferred embodiment allows the opposite ends of the padding V to be brought closer together, since the pins 58, rotating with the respective levers 50, 51 from the solid line to the dashed line position, act across the slide blocks 59 '. by pressing on the walls of the grooves 59 of the two carriers 42, 47 into which they slide, the respective arms formed integrally with the carriers and already acting on the sides 5, 6 of the filling.

The apparatus further comprises adjustment and the centering device 60, Fig. 1, arranged between ^Tu _boiling; ^"V" fill in the ^e prvmm on the disc and blokovacím- and butt-coupling device; the devices serve to allow the opposing ends of the " ^V " formation to be joined only ^{when the} amount of etestomeric material from the arms of each pair to the outer edges 24, 25 of the filling is desirable, i.e. in the preferred embodiment at least 0; 5 mm.

And adjusting the centering device 60, Fig. 4, comprises a body 61 · substantially geometric shape having at least two lateral sides 62, 63 forming the shape "V" (namely, angle .ca] o ^ ^ú ovídajto ^{"V" d} n ^the intersecting ends 24, 25 of the filler on the core.

The body 61 is integral with the end 64 of the lever 65 pivotally mounted at the opposite end 66. This lever 65 can rotate about its bearing through a piston-operated lever assembly 66 as clearly indicated in Fig. 5 As a result, the body 61 can be inserted by the respective parties

62, ^{63 of} the body ^{"in the" P} sticks to the above j ^Aad ru way ^{of y} and interventions that ^{either y} ou vysvěttan rnte.

The activity at the moment is as follows:

First Zanze ^conn Ravi ^P ro tightening ^Aad j r ^{3 to} the tire because prvrn otouč 8 and flange 19 are spaced apart as shown in phantom drawn in disc 8 in FIG. 3.

Immediately thereafter, the core 3 has been coated with an adhesive substance ^runs inserted into ^p rstencového Sit · 15 of the first plate 8 and the plate 8 and flange 19 approach each other along the direction of the axis L until the core · 3 is well blocked by the circular. the ring 17 of the flange 19 and between the annular seat 15 of the first disc.

The core ³ is nym ^p npraveno ^{ab y} around the ^world it exterior · ^p ovrchu 3 ^'p řijata above ^pl n is ^2, and the operation was continued in that causes rotation of the disc 8, whose circumferential, band 10 is brought into · rotation of the second the disc 9 by contact with its surface zone 11.

'Da ^LSI vytvorom step is above the toe ^P; t ^t the ^d axes ^and HNE ^L band (Fig. 2 ^ which is exposed mechanickým- pressures in a direction tangent to the rotating core of the third

In this · step is performed by two successive cuts in a direction perpendicular to the direction of belt automatic senzením of ^d STUP between the two sections, so that the receiving portion of the elastomeric · material whose length is equal to ^d ELCÉ outer surface 3 * I ^d r 3 Figures ² .

The filler belt is already made by an extruder located near the machine or in another zone.

From this ^Importan · ^d in a barge when the zanzení vigorous used to identify bands in the uncured state at room temperature has been placed in a position suitable for their use · and from time to time removed from the collection plane and transported to a cutting station. It is clear that the device for feeding strips · Filling device according to the invention can be manual or samočinto provetom and may range from about nejj ^{d d d} no ^SI No. US ^HD & nejstažrtěj of the apparatus.

^{At the DU} SLE ^'dk u th in the ^y tlačovací machine equipment · ^P ro ^P o will ^be collected and ^{P s} Ruh not shown herein jeVikož nes ^{d p} and ^d Aji of the invention.

In the above-mentioned step, the filler passes through the walls of the annular groove 13 of the second disc 9 and is applied by the annular edges 21, 22 to the core around its outer surface. This operation can advantageously be carried out perfectly regularly and continuously. Said annular edges which have a distance H (FIG. 3) that is • less than ^Pooh as ^d m ^p r ^ur ez above ^{pl them Pooh} SOW actually pressurized between the opposite side of the panel, forcing elastomeric material to de ^f ormov ^{AN ú} Šečić excavated ^h ^ ^d of the ^p temho edge.

In particular, the filling base 4 tends to assume a convex shape towards the outer side of the annular groove 13, but since the flow of the uncured toastomeric material is limited by the presence of the outer surface 3 'of the core 3. This base is substantially ^increased to the outer surface 3 ' of the powder 3, which is already coated with a liquid adhesive.

As a result of the above, the core is applied in a very reliable manner.

This result depends in particular on the fact that only the annular edges and not the entire wall of the annular groove 13 are in contact with the web of filler. In this case, the annular edges of action occurs only to a watercolor forums and ^b nikohv to wide contact surfaces, opposite sides of the filler; · of which is therefore preferably avoided potential transfer portion of the filler owing to the high friction · on the second rotating disk ⁹ in the surface 3 'of the core otečejíctoo the plate 8. At the end of said step covers the base 4 fills them ^UPL surface 3' of the core 3 and the top of the filler has V-shaped open ends ^{24, 25} , as shown clearly ⁱⁿ FIG. 1.

Thereafter further steps are carried out to join the ends to výpteě Tepo · násletojtato of ^p Úsobí:

The disc 8 first stops at such a position that the two opposite ends of the filler have relative axial symmetry planes close to the symmetry plane R-R of the two pairs of locking devices 23 (FIG. 1). In this state, · disc 8 in an inoperative position so that its rotates grille induce ^beta osunuti of th ^p rotilehlých · the ends 24, 25 fills to a position such that their plane of symmetry precisely coincides with said plane of symmetry R-R blocking · device 23 .

This compensation provides the adjustment and the centering-m device · 60 (FIG. 1) by Uve ^d ev activities are con ^di C ^D POWR 66 '(FIG. 5] The body 61, the lever is rotated around · Wednesday 66 on the fixed frame, to indicate playback side ^62, 63 of the photo. 4) ^and the limit opposite ^{to the} body once ^{the "V"} above them ^pl

When the movement body 61 slides at least one of the sides 62, 63 in contact with one of the ends 24 or · 25 fills and moves consequently loose wheel · 8, to both sides 62, ^{63 p} EVN ^eh the body ⁶ 1 are ^p Comms drawn and ^u-d ROOF currencies formation between the "V" above the linseed ^p.

When this operation is complete, the two opposite ends of the filler have a relative plane of symmetry that coincides with the plane of symmetry R-R (Fig. 1) of the locking device 23.

· This process is fundamentally important to ensure the perfect combination of all fillings butt, because the same amount of elastomeric material is pre-set in the vicinity of ^Deh preach about the end of the unit ^{"V" pl} above them; this ^PU with ^b em ^bl okovac ^{s device;} 23 and spojovam device for · joining Butt - as explained · below - are brought into contact with the desired amount of elastomeric material for the butt-joining due to good compression and consequently a perfect connection.

From this point on, further steps are taken to perform said butt connection. The next step is to use a locking device na3 at each end 24, 25 of the filler.

For simplicity, the application of the locking device will be described in more detail only in connection with one end of the filling.

In this step, the pressurized fluid is sent to the interior of the fluid-dynamic cylinder 41 [FIG. 5) to move the respective piston 40 to the right in FIG. 5.

As a result, the rod 39 moves from the position shown in FIG. 5 in dotted lines to the solid line position, thereby causing the ratchets 36, 37 to rotate and consequently the arms 30, 31 rotate from the rest position (dashed line) to the active position (solid line). ) on opposite sides of the device near one end of the V-shaped panel.

Due to the counter-directional pressures exerted on the surfaces 32, 33 of the arms 30, 31, the filler is firmly locked to one of two pairs of pusher members connected to the fixed frame.

Similarly, the second pair of pusher members is applied to opposite sides of the padding near the second end 24 of the formation "V" [FIG. 1).

After this period, due to the special geometry of the locking device 23, namely the angle α formed by the parallelograms A and B of the two legs 31, 3Γ of the two pairs on the same side of the filling [FIG. 1) and secondly, due to the centering effect exerted by the solid body 61, it blocks the same amount of uncured elastomeric material between the free edges of both ends of the panel V and between the two arms.

This preset amount of elastomeric material, equal to the entire fill height, is preferably at least 0.5 mm.

After this formation of optimal butt joint conditions, the solid body 61 moves from the ends of the padding 24, 25 to the rest position shown by the solid line in Fig. 5. aids for joining the two opposite ends 24, 25 of the "V" butt filler.

During this period, the third mechanism 26 * [FIG. 4) by applying counter-directional pressures of equal intensity to the third and fourth levers 50, 51 in such a way that the levers rotating about the centers 52 and 53, respectively, move from the rest position indicated by a solid line to the position indicated by FIG. line icon.

Rotation of the levers causes the pins 58, located at the other ends 56, 57 to slide into the grooves 59 of the carriers 42, 47, with which the locking aids are connected in one piece.

23, namely the arms of pairs of pusher members acting on opposite sides of the filler.

In accordance with the foregoing, the displacement of said carriers of rotation of the levers 44, 48 about the common pin 46 and consequently the proximity and subsequent engagement on the butt opposite ends of the V-shaped structures is determined.

After this period, the two opposite ends 24, 25 of the filler, which are made of an elastomeric material in an adhesive state and subjected to the compression described above, will be perfectly joined so that the filler is perfectly applied to the core 3 with the annular distribution.

Then, the arms are moved away from opposite sides of the filler and the rest position of the coupling device 26 is restored.

In these steps, the actuating operations are opposite to the above, i.e. the first and second mechanisms are actuated by bringing, for example, the arms 30, 31 into the position indicated by the dashed line in Fig. 5 and that the ends 54, 55 of the third and fourth levers 50 , 51 exerts approximative pressures.

In the final step, the core bearing the filler is removed.

In this year, the two disks first detach and then the flange 19 moves away from the disk 8 (FIG. 3), so that the core with the filler is removed from the annular seat 15 and a new core is prepared.

Thereafter, the new core is placed inside the annular seat 15 and the disks 8, 9 are placed circumferentially in contact with each other, as shown in Fig. 1, the movement of the strip L in the direction tangential to the core surface 3 'is resumed and a filling is formed. a length determined by two cuts perpendicular to the direction of belt travel L (Fig. 2), corresponding to the peripheral contour of the core.

Then, the movement of the belt L is stopped and a new one is placed on the core. Filling in the manner described above.

Obviously, the above-mentioned work steps can all be advantageously performed from start to finish without downtime, avoiding the use of labor and with high automation.

The features of the device according to the invention are such that the core 3 can first be inserted (by any unwritten device which is not part of the invention) between the disk 8 and the flange 19 and then due to its perfect grip in the annular groove 15 obtained by two notches perpendicular to the direction of travel of the belt L (Fig. 2).

After covering the core of the filler, the ends 24, 25 of which are spaced apart from each other, the disc 8 can be stopped, although the adjustment between the symmetry plane of the filler ends and the symmetry plane R-R of the locking device 23 is not entirely regular.

In this case, as explained above, both sides 62, 63 of the body 61 will then allow perfect alignment.

This feature permits on the one hand pro223872 vádět with maximum speed and security next steps for Butting two ends 25, 24 fillings, and on the other · hand, avoiding the use of complex electronic and mechanical devices, which would be jrna ^{a surcharge} ot ^of ebí to all ^or ADEC ^h immediately received discharge ends 24, 25 of body "in the" ^APL n n ^E -plane ^R -R I ^to pleasantly disc 8 stops.

Said properties of the device according to the invention make it possible to achieve high productivity at high quality.

A further advantage of the invention is given by the possibility of butt-joining the two ends 24, 25 of the packing, depending on only one automatic device acting on the third mechanism 26 ‘. As mentioned above, the presence of the levers 50, 51 and 44, 48 (FIG. 4) allows this drive to be simultaneously transferred to the locking device 24 already acting on the device and, as a result, to make the desired connection.

Furthermore, although the invention has been described in connection with particular preferred embodiments ^{i m,} it should be appreciated that the ^{d h} is the extent of fall and other embodiments, which the skilled person may derive from the above mentioned principles of the invention.

For example, different embodiments of the first blade may ^puter zalofeno by ^T o l ^{d s} m n ^AI method of introducing the core into the channel, or may drive the locking device 23 to be practiced otherwise than described. In particular, it would be possible to approach each other, both pairs Uateých ^{members of} the pteoWcfch ^P rotěj ^parties fillers independent drive systems or • approaching the two ends 24, 25 of the filler towards the plane of the R-R symmetry in successive periods, namely first at the first end 24 , and then · at the other end of 25.

In addition, the operating sequence of the device could be altered without departing from the scope of the invention.

For example, it is possible to remove the solid body 61 from the two ends 24, 25 of the filler before placing the arms 30, 31 (Fig. 5) on opposite sides of the filler. In this case, the discs 8 in the space can be blocked by a suitable brake and clutch unit until the arms act on the padding.

Claims (11)

SUBJECT An automatic device for continuously applying elastomeric fillers to tire cores, comprising a rigid frame with which two disks are in contact with each other along their circumference, the first disk having a first annular groove for inserting the core and the second disk having a second annular groove into wherein the upper part of the filler is inserted in a tangential direction, characterized in that it comprises a coupling device (26) for connecting opposite ends of the filler and two pairs of two push members positioned symmetrically with respect to the plane in which the groove lies It is also understood that the above inventive ^E through ^{A, d} y ^p iat ^í same ^{e d} ob ^of e to the ^á m inquire nucleated ^p neum-loft R ^u znýc ^h types, such as truck tires to packing height 40 mm or that the invention may also be applied in other fields of application. Furthermore, it is also apparent that the two cuts on ^p Asa above ^p the linseed · visible by ^TP MPLEMENTATION ^y way ^of manner · similar · the above, provided that the outer opposed surfaces of the filler relative to each other is unfolded ^y and have dolrn vertex on the corresponding core, and that the two surfaces are not aligned when approached and compressed by the devices of the invention. Within the scope of the invention also encompasses the use of various steps in attaching the core · for applying the filler to the core for coupling the opposite ends ^{of "V"} shaped výplnto so that they can be made in one or more stations or positions. For example, the first station may be performed · deployment core and applying a filler on the core and in NTE-ledujte stanirn ^{d p} and Al ^with said ^{E h} ora ^CL on ^y. The locking device and a device for jointing butted example, may be positioned generally in one station, in which the core comes with ^p OTE ^{No. some} strung maprn ^to once ^t boil ^"V" already oriented ^é suitable ^PU with ^b em backlash ^or the ústropm in order to achieve reliable welding conditions as described above. The first disc may occur in the next station in various ways, straightforward post em or ^p · otteemm also ^the ol Streich possible for all stations. Then: can perform deployment cores station odlmné of ^d stιanice ^wh e set ^and depositing the filler on the core · and so may also removing cores with filler made either in the same station with ^p ojováním ^to Oncu filler butt or some other station. The ^P at the owner ^of the EM ^í rub increase ^EM Produktiv ^{as those} rotože different ^{e p} o ^p ERAC mnote ingredient ^from EC can ^{b p} yt Equation ^ade b ^y of ^{s for n} in various rove stanimch. ^Except that the ^H ^ ftomnost Jeune · vtoe stations or amortized snatep pnstu ^ ^pk zaftzem ^P ro ^g re UTAC Uteza and so ^{e p} ro · tesleteu tool change in core teznýte system dimensions and filler. INVENTION It rvmho ^p · ^t ou ^k o ^p e ^p s ^No EMZ jeten Uateých members of each of the two pairs is · connected to the connecting device (26 J. 2nd Automatic aaříeení oddly oouu 1, characterized-in that oteateje toles ⁽⁶¹⁾ ^ ^kt ometriteteo tvarp er has aletpo ^{é ò} Tee Born p ^ ^y n ^{(62, 63)} IVORY ritvar ^"V" to the AP ^and (65) whose one end (64) is associated with this · body (61) and a second end (66) is hinged on the frame (67), the plane of symmetry of ^b ou tečráte sides toles ⁽⁶¹⁾ coincides with the median plane of symmetry between the pairs of pusher members, the body (61) associated with the control unit. An automatic device according to claim 1 or 2, characterized in that each pair of thrust members comprises two arms (30, 31), the ends of which are associated with first and second ratchets (36, 37) which engage and are separate. proportional to the median plane of the first disc holder and of which at least one ratchet (37) has a rotatable shaft (38) connected to a rod (39) associated with a piston (40) of a fluid-dynamic cylinder (41) which is connected to the coupling ( ² 6). ). ^4. amočinn ^s classification of ^{dl p} e ^{d b} o u ^3, characterized in that the two arms (30, 31) of two pairs of pressing members arranged on the same side of the center plane are mutually inclined. An automatic device according to claim 3, characterized in that each pair of pusher members with a resealable horn piston and a fluid-dynamic cylinder is provided in a single trinket with a carrier (42) attached to the first end (43) of the lever (44). the second end (45) is attached to a pin (46) whose axis of rotation is parallel to the axis of the first disc (8) and which represents a common axis of rotation of the two levers (44, 48) with which the two carriers (42, 47) with two pairs of pressing members, and which is apart from the · fastened to the fixed frame, wherein both carriers ^{(42, 47)} are builded ^{y y} of ^P and ^C Nym button ^to m · ^BC es tetrop coupling ^{(26). 6.} amočinn ^s of the ^P e ^{b dl} odu ^{5, wherein} characterized in that the coupling device (26) for opposite ends · filler comprises two further levers, the third (50) and fourth (51) which are positioned with their Strada ^(52, 53) of ^TAC en ^also on the frame along axes parallel to the axis of the first blade and in symmetrical position with respect to ro guilt radial to the first disc and forming a plane of symmetry between the two pairs ^t lačnýc ^h ftenfy ^PRICE em ^f prvrá end ^{(54, 55} ), third and fourth levers (50, 51) are associated with tekutinodynamickým controller and the second ends ^{(56, 57),} third and fourth ^{levers (50, 51)} are measures ^of phenyl pins (5 ⁸⁾ can be pushed into suitable grooves (59) of the two carriers . An automatic device according to any one of the preceding claims, characterized in that it comprises an annular seat (15) formed as a step and provided on the peripheral surface (16) of the first disc as well as a surface (17) formed as a circular ring and positioned on the peripheral. zone (18) of the flange ⁽¹⁹⁾ coaxial with the first co ^{t No} ou ^em em ^p s ^{No. of} the flanges (19) is associated with the first disc and the circular ring lies against the step for forming said annular seat and a ^laterally-Pr I btakovám ^No EMZ flange and the disc are mutually movable in the axial direction of the first disc. An automatic device according to any one of the preceding claims, characterized in that within the second groove of the second disc it comprises two opposing annular edges (21, 22) whose mutual distance - measured parallel to the axis of the second disc - is smaller than the transverse dimension of the filler. The automatic device according to claim 8, characterized in that the edges (21, 22) are provided with a knurled surface. 10th Automatic device according to claim 2, wherein ^Tm e body tvoncí ^ú · "V" shape is placed at the first station, the connection ^device; and the two dual-thia runaway ^Cl en ^U are positioned in the second station, and in that a motor to rotate the spur · · totra between stations. 11. The automatic device of claim 2, further comprising a third additional sensing station.