JP4755543B2 - Method for applying strip sponge material and application device - Google Patents

Description

  The present invention relates to a method for applying a band-like sponge material for attaching a sound-damping band-like sponge material to the inner surface of a tread of a tire in the tire circumferential direction, and a device for attaching the same.

  One of the tire noises is so-called road noise that produces a “go” sound in the frequency range of 50 to 400 Hz when traveling on the road surface, and the main cause is resonance vibration of air that occurs in the tire lumen ( Cavity resonance) is known. Therefore, in recent years, a long band-like sponge material for damping sound is placed in the tire circumferential direction to relieve and absorb resonance sound energy generated in the tire lumen, thereby suppressing cavity resonance. Thus, a technique for reducing road noise has been proposed (see, for example, Patent Document 1).

JP 2003-063208 A

  In Patent Document 1, in order to prevent damage to the tire and the band-like sponge material itself due to movement of the band-like sponge material in the tire lumen and rubbing against the tire lumen surface during traveling, the band-like sponge material is attached to the inner surface of the tread. It has been proposed to be fixed to the substrate by adhesion. ,

  However, conventionally, there is no device for attaching the strip-like sponge material to the inner surface of the tread, and it is unavoidable to apply it manually by an operator. For this reason, there is a problem that the working efficiency is remarkably lowered and the pasting accuracy cannot be kept uniform and the quality is deteriorated.

  Therefore, the present applicant uses a fixed-size band-shaped sponge material that is cut to one circumference of the tire and has an adhesive surface formed on one side. The fixed-size band-shaped sponge material is guided to the inner surface of the tread by the guide roller, and the pressing roller. Has already filed a pasting device that can be pressed and firmly bonded to each other (Japanese Patent Application No. 2005-368461).

  However, even in such a pasting apparatus, a large gap is generated between both ends of the fixed-size band sponge material due to dimensional variation of the fixed-size band sponge material or tension variation at the time of application, or between both ends. In some cases, appearance defects such as tire axial misalignment may occur. In the case of such a defect, it is required to perform a correction operation to replace the fixed-size band-like sponge material.

  On the other hand, in the vulcanization molding process of the tire, a release agent such as silicone oil may be applied to the bladder surface in order to improve the peeling from the bladder. At this time, the release agent adheres to the inner surface of the tread. There is a problem that causes poor adhesion. Therefore, in such a tire, it is necessary to buff the inner surface of the tread to remove the release agent. Some bladders eliminate the use of a release agent by forming a releasable film on the surface. In this case, there is no adhesion of the release agent to the inner surface of the tread and no buffing is required. .

  However, as a result of the inventor's research, since the surface of the buffed tire is rough, once it is pressed by the pressing roller, it is difficult to peel the fixed-strip sponge material from the inner surface of the tread. It was found that the tires became scrap. In the buffed tire, it is possible to peel off the fixed-size band-like sponge material before pressing with the pressing roller and immediately after application with the guide roller, and the surface of the tire without buffing is smooth. Therefore, it has also been found that the fixed-size band-shaped sponge material can be peeled off immediately after the pressure contact with the pressing roller.

  Therefore, when sticking the strip-like sponge material, it is identified whether it is a buffed tire or a non-buffed tire, and in the case of a buffed tire, a sticking inspection can be performed at the stage before pressure contact with the pressing roller, This is particularly important in order to carry out the repair work of the fixed-size band sponge material.

  The present invention has been made in view of such a situation, and it is possible to efficiently and uniformly paste a band-like sponge material for noise suppression on the inner surface of the tread, and to fix the uniform band-like sponge material. It is an object of the present invention to provide a novel band-like sponge material affixing method and affixing device that can perform a retouching correction work even if affixing failure occurs.

In order to achieve the above object, the invention of claim 1 of the present application is a method for applying a band-like sponge material in which a sound-damping band-like sponge material is attached to the tire tread inner surface in the tire circumferential direction.
The tire identification means identifies whether the tire is a buffed tire with a buff finish area as a range in which the band-like sponge material is applied in the circumferential direction on the inner surface of the tread, or a non-buff finish tire without a buff finish area,
And the identified tire is rotatably held in a standing state by a tire holding rotator,
The band-shaped sponge material is formed of a fixed-size band-shaped sponge material cut at a pasting length, and is wound in a spiral shape to form a wound body, and the sponge holding frame containing the wound body is attached to the tire lumen. Arranged
And with the rotation of the tire by the tire holding rotating tool, the fixed-size band-shaped sponge material is taken out from the sponge holding frame and guided and pasted to the inner surface of the tread by the guide pasting means having a guide roller,
When the tire is a buffed tire, the gap between the ends of the fixed-strip sponge material on the inner surface of the tread and the axial displacement of the tires on the inner surface of the tread are completed after the guide roller completes the application of the fixed-strip sponge material. An inspection process is performed to confirm that the application conditions including the above are satisfied, and after that, a fixed-size band-like sponge material that has been applied is pressed against the inner surface of the tread along with the tire rotation by a pressing roller,
Further, when the tire is a non-buffed tire, the pressing process is continuously performed following the completion of the application of the fixed-size band-like sponge material by the guide roller, and then the inspection process is performed.

The invention of claim 4 is a device for applying a band-like sponge material for attaching a band-like sponge material for damping to the tire tread inner surface in the tire circumferential direction,
A tire identification means for identifying whether the tire is a buffed tire in which a range in which the strip-like sponge material is applied to the inner surface of the tread in the circumferential direction is a buffed region or a non-buffed tire having no buffed region;
A tire holding rotator that holds the identified tire rotatably in an upright state;
An affixing tool for adhering a band-shaped sponge material to the inner surface of the tread of the tire held and rotated by the tire holding rotator,
And an operation control means for controlling the sticking tool,
In addition, the affixing tool includes a sponge holding frame that accommodates a wound body obtained by spirally winding a fixed-size band-shaped sponge material obtained by cutting the band-shaped sponge material by a bonding length, and can enter and exit the tire lumen. A guide sticking means having a guide roller for guiding and sticking the fixed-size band-shaped sponge material from the sponge holding frame to the inner surface of the tread, and a pressing roller capable of pressing the fixed-size band-shaped sponge material to be pressed against the inner surface of the tread With pressure welding means,
When the tire is a buffed tire, the operation control means, after completing the application of the fixed-size sponge material by the guide roller, and further, the distance between both ends of the fixed-size sponge material on the inner surface of the tread, After performing an inspection to confirm that the affixing conditions including deviations in the tire axial direction at both ends are satisfied, the fixed-size band-shaped sponge material that has been affixed is pressed against the inner surface of the tread with the rotation of the tire by a pressing roller,
When the tire is a non-buffed tire, the pressing by the pressing roller is continuously performed following the completion of the application of the fixed-size band sponge material by the guide roller.

  Since the present invention is configured as described above, a band-like sponge material for noise control can be efficiently and uniformly applied to the inner surface of the tread. In addition, even if sticking failure occurs due to dimensional variation of the sizing band-like sponge material or tension variation at the time of pasting, it is possible to repair the sizing band-like sponge material and prevent tire scraping. be able to.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view schematically showing a band-like sponge material sticking apparatus of the present invention.
As shown in FIG. 1, the strip sponge material pasting device 1 (hereinafter referred to as the pasting device 1) includes a tire identification means 43 (see FIG. 10) for identifying whether the tire T is a buffed tire T1 or a non-buffed tire T2. A tire holding rotating tool 2 that holds the identified tire T rotatably in an upright state, and a sticking tool 4 that affixes a strip-like sponge material 5 to the tread inner surface Ts of the tire T that is held and rotated, It is comprised including the operation control means 44 (shown in FIG. 4) which controls the sticking tool 4. FIG.

  As shown in FIG. 8, the band-like sponge material 5 absorbs and relaxes resonance sound energy (vibration energy) generated in the inner cavity of the tire and suppresses cavity resonance by vibrant vibration and sound absorption. Can reduce road noise and control sound. Further, since the band-shaped sponge material 5 is fixed by being stuck to the inner surface Ts of the tread, the band-shaped sponge material 5 is prevented from moving during running and rubbing and damaging the inner surface of the tire and the band-shaped sponge material 5 itself. Can do.

  Here, in tire vulcanization molding, a release agent such as silicone oil may be applied to the bladder surface in order to improve the peeling between the tire and the bladder, and this release agent adheres to the tread inner surface Ts. There is a tendency to cause poor adhesion. Therefore, in such a tire, it is necessary to buff the range in which the strip-like sponge material 5 is applied to the tread inner surface Ts in the circumferential direction, and to form the buffing region Y from which the release agent is removed. On the other hand, there has been proposed a bladder that eliminates the use of a release agent by forming a release film on its surface. In this case, the release agent does not adhere to the tread inner surface Ts, and it is not necessary to form the buff finish region Y.

  Further, as shown in FIG. 9 (A), the band-like sponge material 5 is composed of a fixed-size band-like sponge material 5 that has been cut in advance with a sticking length per tire. One surface is an adhesive surface S on which an adhesive is disposed, and the adhesive surface S is covered with a release paper 6. A double-sided pressure-sensitive adhesive tape can be suitably used as the adhesive. In the present invention, the fixed-strip sponge material 5 is used in the state of a wound body 5A in which the release paper 6 is spirally wound outward in the radial direction, as shown in FIG. 9B. Is done.

  As the material of the fixed-size band-like sponge material 5, a sponge-like porous structure, for example, a so-called sponge itself having open cells in which rubber or synthetic resin is foamed, animal fibers, plant fibers or synthetic fibers are entangled. Includes web-like ones connected together. The “porous structure” includes not only open cells but also closed cells. Preferably, synthetic resin sponges such as ether polyurethane sponge, ester polyurethane sponge, polyethylene sponge, and rubber sponges such as chloroprene rubber sponge (CR sponge), ethylene propylene rubber sponge (EDPM sponge), and nitrile rubber sponge (NBR sponge). Can be suitably used.

  Next, as the tire identification means 43, in this example, as shown in FIG. 10, an identification tag J consisting of a barcode preliminarily attached to the tire T (usually the outer surface of the bead) sent from the carry-in line is read. A so-called bar code reader 43A is used. In the identification tag J, various information including, for example, the size, type, date of manufacture, date of shipment, and tire use conditions of the tire is coded and described in addition to the information on whether or not the tire T has the buff finish region Y. ing.

  Next, as shown in FIGS. 1 and 2, the tire holding rotating tool 2 includes a tire supporting means 8 having at least a pair of supporting rollers 7 that support the tires at intervals and over the tires, and a tire T that is held. An axial center positioning means 10 having a pair of side support members 9 that sandwich the side wall portion of the tire from both sides, and a pressing means 12 having a pressing roller 11 that presses the held tire T against the support roller 7 from above. including. Specifically, in this example, a frame-like frame 14 is provided in which the left and right side frames 13L and 13R, which are rectangularly framed as a vertical frame piece and a horizontal frame piece, are joined by a horizontal joint frame piece. Further, the tire support means 8, the axial center positioning means 10, and the pressing means 12 are attached.

  The tire support means 8 has a pair of horizontal support rollers 7 arranged in parallel to each other at an interval, and both ends of each support roller 7 are pivotally supported by the side frames 13L and 13R. The Further, for example, a tire drive motor M1 that is attached to the side frame 13L is connected to one end of one support roller 7 via known drive connection means using a sprocket, an endless string, or the like. Therefore, the tire support means 8 can hold the tire T between the support rollers 7 and 7 in an upright state, and can rotate the tire T by driving the tire drive motor M1. The loading and unloading of the tire T between the support rollers 7 and 7 can be performed between the side frames 13L and 13R as shown in FIG.

  The axial center positioning means 10 includes a pair of side support bodies 9 that sandwich the sidewall portions of the held tire T from both sides in a rotatable manner. In this example, the side support 9 has a peripheral frame-shaped support main part 15 having a rectangular frame shape, and each support main part 15 extends between the left and right side frames 13L and 13R in the tire axial direction. A pair of upper and lower guide guides 16 are guided so as to be movable in the tire axial direction. The support main portions 15 and 15 can be moved at equal distances in opposite directions in the tire axial direction on both sides of the center position i in the tire axial direction via the left / right opening / closing means 17.

  As shown conceptually in FIG. 3, the left / right opening / closing means 17 includes a gear 17A pivotally attached to the frame 14 at the center position i, a tire 17A extending in the tire axial direction and the gear 17A. A gear-rack mechanism comprising a pair of racks 17B and 17C that can mesh with each other, and one end of each of the racks 17B and 17C is fixed to the support main parts 15 and 15 on both sides, respectively. In addition, in this example, a rod end of a cylinder 17D that is extendable and contractible in the tire axial direction is connected to one support main body 15. Accordingly, the support main portions 15 and 15 on both sides can move at equal distances toward the center position i by the extension operation of the cylinder 17D, and the sidewall portion of the tire T is sandwiched from both sides therebetween. As a result, the tire T can be aligned with the center position i at the tire equator.

  Further, in the side surface support 9, in order to hold the sandwiched tire T rotatably, the side surface of the sandwiched tire T is positioned at the maximum tire width position on the facing surface of the support main portion 15. A plurality of holding rollers 18 that can come into contact with each other are pivotally supported. The holding roller 18 is arranged such that its roller axis is directed toward the rotation axis of the tire. Since the height position of the rotation axis of the tire changes according to the tire size, in this example, one holding roller 18 is provided for each of the upper and lower sides and the left and right sides (total of four), and each roller 18 is set horizontally. The upper holding roller 18 is set to be 60 mm longer than the lower holding roller, for example, with an angle θ of 45 °.

  The pressing means 12 has a cylinder 12A supported at the upper end of the frame via an attachment fitting, and the pressing roller 11 is pivotally attached to a rod end facing downward via a roller holder. . Accordingly, the extending operation of the cylinder 12A allows the held tire T to be pressed against the support roller 7 from above, and the tire T can be reliably rotated at a predetermined rotational speed without any positional deviation or speed unevenness. it can.

  Next, as shown in FIG. 6, the affixing tool 4 includes a sponge holding frame 20 that houses and holds the spiral wound body 5A of a fixed-strip sponge material 5, and the wound body 5A that is held. One end 5e of the fixed-size band-like sponge material 5 is taken out from the guide, and the guide pasting means 23 having the guide roller 22 for guiding and sticking to the inner surface Ts of the tread is pressed against the inner surface Ts of the tread and pressed. A pressing means 25 having a pressing roller 24 that can be pressed.

  In this example, as shown in FIG. 4, the affixing tool 4 is a traverse for moving the affixing tool 4 in the tire axial direction to insert and remove the affixing tool 4 from the bead seat hole H in the tire lumen. It is supported by a support tool 30 comprising at least means 28 and vertical movement means 29 for moving the sticking tool 4 inserted into the tire lumen in the tire radial direction.

  In this example, the support tool 30 is supported by a height adjuster 31 that adjusts the height position of the sticking tool 4 up and down according to the tire size.

  The height adjustment tool 31 is vertically guided by the vertical guide guide 34 that is arranged on the support base 33 that rises from the base plate of the frame 14 and can be moved up and down by being guided by the vertical guide guide 34. A height adjusting table 35 and an upper and lower linear drive unit (not shown) for moving the height adjusting table 35 up and down freely are provided. In this example, the upper and lower linear drive units have a ball screw mechanism, and are attached to the height adjusting table 35 and screwed to the screw shaft. The nut part to be provided. A lifting motor (not shown) attached to the support base 33 is connected to one end of the screw shaft. Therefore, the height adjusting table 35 is moved up and down in accordance with the size of the tire held by the tire holding / rotating tool 2, so that the sticking tool 4 can be inserted into and removed from the bead seat hole H into the tire lumen. Can be adjusted.

  The traverse means 28 constituting the support 30 can move in the tire axial direction by being guided by a horizontal guide guide portion 36 disposed on the height adjusting table 35 and the horizontal guide guide portion 36. A horizontal movement table 37 and a horizontal linear drive unit 38 that moves the horizontal movement table 37 between two positions, a rear standby position Qr and a front advance position Qf, are provided. In this example, the horizontal linear drive unit 38 is a rodless cylinder, and a piston unit that moves between one end and the other end of the horizontal linear drive unit 38 is connected to the horizontal moving table 37 via an actuator. At the standby position Qr, as shown by a one-dot chain line in FIG. 5 (A), the affixing tool 4 can be kept on the outside of the tire lumen, and in this standby state, the tire is put into the tire holding rotator 2. Then, the strip sponge material 5 is attached to the sticking tool 4. Further, at the advance position Qf, the fixed-size band-like sponge material 5 can be inserted into the tire lumen with the center line of the width aligned with the tire equator C.

  Further, the vertical movement means 29 can be moved up and down by being guided by the vertical guide guide part 40 and a vertical guide guide part 40 extending up and down arranged on a support base 39 standing upright from the horizontal movement base 37. The lifting / lowering body 41 and the upper / lower linear drive part 42 which is a cylinder in this example which moves this lifting / lowering body 41 up and down are provided. The elevating body 41 has an arm shape extending in the tire axial direction, and holds the sticking tool 4 at the front end thereof. And by the operation | movement of the said up-and-down linear drive part 42, the sticking tool 4 hold | maintained at the front end can be moved up and down between two positions of the insertion height position Pr to a tire lumen, and the sticking height position Pf. .

  The sponge holding frame 20 of the sticking tool 4 is specifically attached to the front end of the elevating body 41 via a mounting plate 26. As shown in FIG. 6, the sponge holding frame 20 has a container shape in which an annular peripheral frame 45 for holding the outer peripheral surface of the wound body 5A is provided around the bottom plate. The annular peripheral frame 45 includes a strip-like sponge. A cut-off portion 45A for taking out one end 5e of the material 5 is formed. The cut-off portion 45A has a first guide piece 46a extending from one end of the annular peripheral frame 45 in the tangential direction and downward, and the other end of the cut-off portion 45A extending in parallel with the first guide piece 46a. A guide portion 46 including two guide pieces 46b is provided continuously. The distance D between the guide pieces 46a and 46b is set to 0 to 0.5 mm larger than the thickness t of the fixed-strip sponge material 5 in an unloaded state.

  The guide pasting means 23 includes at least a guide roller 22, a release paper peeling roller 48, and a release paper take-up roller 49 arranged on the lower end side of the guide portion 46. The release paper peeling roller 48 is formed on the first guide piece 46 a side, and peels the release paper 6 from the fixed-size sponge material 5 taken out from the lower end of the guide portion 46. A release paper take-up roller 49 is provided adjacent to the release paper release roller 48 and takes up and collects the release paper 6 to be peeled off. The release paper take-up roller 49 has a slit 49A having a radius on the outer periphery of the release paper take-up roller 49 with the leading edge of the release paper 6 interposed therebetween so that the release paper 6 does not slip and cause a winding failure. It is formed in the direction. The release paper take-up roller 49 is driven by a release paper collecting motor (not shown). An induction motor is employed as the release paper collecting motor, and control is performed to synchronize with the tire rotation speed. In addition, a torque motor may be employed, and the upper limit of the rotational torque of the motor may be regulated so that the release paper 6 is not broken by tension.

  The guide roller 22 is disposed on the second guide piece 46a side, and guides the fixed-size sponge material 5 from which the release paper 6 has been peeled, with its adhesive surface S facing radially outward. In addition, large-diameter flange-shaped flanges 22 a that prevent the positional deviation of the fixed-size band-like sponge material 5 in the width direction are provided at both ends in the axial direction of the guide roller 22. As shown in FIG. 7, the guide roller 22 guides and sticks the fixed-size band-like sponge material 5 from the wound body 5A to the inner surface Ts of the tread at the attaching height position Pf. At this time, an interval g between the guide roller 22 and the tread inner surface Ts at the attachment height position Pf is set so that the fixed-size sponge material 5 is not pressed against the inner surface Ts of the tread by the guide roller 22. It is necessary to regulate to be larger than the thickness t of the material 5. Therefore, in this example, the protrusion height h of the flange 22a is set larger than the thickness t. The guide roller 22, the release paper release roller 48, and the release paper take-up roller 49 are rotatably supported by the mounting plate 26.

  The pressure contact means 25 has a pressing roller 24 that presses the fixed-size band-like sponge material 5 stuck by the guide roller 22 against the inner surface Ts of the tread, thereby ensuring adhesion strength to the inner surface Ts of the tread. The pressing roller 24 is pivotally supported by a lower end of a rod of a cylinder 50 fixed to the mounting plate 26 via a roller holder. The pressing roller 24 is formed of a sponge material whose outer peripheral surface is easily elastically deformed. As a result, the pressing roller 24 can uniformly press the fixed-strip-shaped sponge material 5 against the inner surface Ts of the tread over a wide area, and can stabilize the adhesion state as compared with a rigid roller.

  Next, the operation control means 44 is a control device such as a computer for controlling the operation of the affixing tool 4, and when the tire T is a buffed tire T1, the pressing roller 24 as shown in FIG. In the retracted state, sticking by the guide roller 22 is performed. In this pasting, since the fixed-size band-like sponge material 5 is not yet pressed against the tread inner surface Ts, the adhesion is insufficient, and even in the case of the buffed tire T1, the fixed-size band-like sponge material 5 can be replaced. is there. Therefore, when the non-pressure-bonding is completed, as shown in FIGS. 11A and 11B, the gap d1 between the both ends of the fixed-size band-shaped sponge material 5 and the deviation in the tire axial direction between the both ends. An inspection process is performed to confirm whether or not the application condition including d2 satisfies the reference value. In the case of an acceptable tire, after the inspection, the tire is rotated with the pressing roller 24 being advanced. Thus, the fixed-size band-shaped sponge material 5 is pressed against the inner surface Ts of the tread and pressed to ensure adhesion. In this example, the unacceptable tire in which the pasting condition does not satisfy the reference value is removed from the pasting device 1 without being pressed by the pressing roller 24 and is replaced with the next tire. The unacceptable tires are removed off-line by stripping off the fixed-size sponge material 5 and then re-introduced into the carry-in line.

  Further, when the tire T is a non-buffed tire T2, the operation control means 44 causes the pressing roller 24 to continuously perform the press contact after the completion of the non-pressure contact pasting by the guide roller 22. In this case, it is advantageous from the viewpoint of process time and work efficiency that the pasting and the pressure welding are continuously performed. Moreover, in the case of the non-buffed tire T2, the tread inner surface Ts is smooth, and therefore immediately after the pressure welding. If so, it is possible to peel off the fixed-size band-like sponge material 5. Therefore, the inspection process is performed after the pressure contact.

  Next, a method for pasting a strip-shaped sponge material using the pasting apparatus 1 of the present embodiment will be described. FIG. 12 is a flowchart of the pasting method.

  First, the identification tag J of the tire T to be carried in is read using, for example, the tire identification means 43 which is a barcode reader 43A, and it is identified whether it is a buffed tire T1 or a non-buffed tire T2.

  Then, the identified tire T is set on the tire holding rotator 2 in a state where the affixing tool 4 stands by at the standby position Qr on the rear side in the tire axial direction. Specifically, after placing the tire T across the support rollers 7, 7, the axial center positioning means 10 is operated, and the sidewall portions of the placed tire T are placed on both sides. By sandwiching between the side supports 9, the tire T is aligned with the tire equator C at the center position i. This alignment is preferably performed while rotating the tire. Further, after the tire is stopped, the pressing means 12 is operated, and the mounted and aligned tire T is pressed against the support roller 7 from above, and is held rotatably in an upright state.

  In addition, the fixed-size band-like sponge material 5 is attached to the sticking tool 4. At this time, in the present example, the tire identifying means 43 also identifies the tire size, and the fixed-width band-like sponge material 5 having a width and a length that matches the tire size is selected. The guide roller 22 and the release paper take-up roller 49 in the guide sticking means 23 are also replaced with ones suitable for the width of the fixed-size sponge material 5. Then, the selected fixed-size sponge material 5 is accommodated in a sponge holding frame 20 as shown in FIG. At this time, in order to automatically paste the sizing band-like sponge material 5, the sizing band-like sponge material 5 is wound from the sponge holding frame 20 until its one end 5 e is below the lower end of the flange 22 a of the guide roller 22. Returned. Further, the release paper 6 is peeled in advance from the one end 5e, and the leading end of the release paper 6 is engaged with the slit 49A of the release paper take-up roller 49 through the release paper peeling roller 48.

  In addition, in the support tool 30, as shown in FIG. 5A, the height adjustment tool 31 is operated in advance so that the height adjustment tool 31 can be inserted into the tire lumen through the bead seat hole H. The height of the sticking tool 4 is adjusted. In this example, the operation control unit 44 includes a storage unit that stores the size data of the tire T, and based on the information of the identification tag J read by the tire identification unit 43, from the size data stored in the storage unit The vertical movement of the height adjusting table 35 is controlled.

  Thereafter, the traverse means 28 is operated, and the sticking tool 4 is moved from the standby position Qr to the forward movement position Qf, as indicated by a one-dot chain line in FIG. Thereby, the wound body 5A of the fixed-size band-like sponge material 5 is inserted into the tire lumen with the width center line thereof aligned with the tire equator C.

  Thereafter, as shown in FIG. 5B, the vertical movement means 29 is operated to lower the sticking tool 4 to the sticking height position Pf. At the affixing height position Pf, one end 5e of the sizing band-like sponge material 5 can be brought into contact with the tread inner surface Ts, and the adhesive surface S can be adhered to the tread inner surface Ts.

  Here, before the rotation of the tire T, when the one end 5e of the fixed-size band-like sponge material 5 comes into contact with the inner surface Ts of the tread, the fixed-size band-like sponge material 5 is bent at the time of contact and the bonding surfaces S May cause problems such as bonding, or deformation of one end 5e. Therefore, the tire T is rotated at the moment when the one end 5e comes into contact with the inner surface Ts of the tread by the control of the tire drive motor M1 by the operation control means 44. As the control, in this example, timer control to the tire drive motor M1 is adopted with reference to the start of lowering of the applicator 4 from the insertion height position Pr.

  In addition, when winding of the release paper 6 by the release paper take-up roller 49 is started before the application of the fixed-size band sponge material 5, the fixed-size band sponge material 5 is removed from the wound body 5A along with the release paper 6. Since it is pulled out, the fixed-size band-like sponge material 5 is bent, causing deformation such as bonding of the bonding surfaces S to each other. Therefore, the operation control means 44 controls the release paper collecting motor by, for example, a timer, and starts the rotation of the release paper take-up roller 49 in synchronization with the start of tire rotation (in this example, slightly delayed from the start of tire rotation). ing.

  The fixed-strip sponge material 5 rewound from the wound body 5 </ b> A as the tire rotates is stuck to the inner surface Ts of the tread by the guide roller 22 in a non-pressure contact manner.

  When the tire T is a non-buffed tire T2, the affixing tool 4 continuously performs the abutting process by the pressing roller 24 following the aforesaid non-abutting affixing when the tire T is a non-buffed tire T2. . When the tire T is a buffed tire T1, the tire T is stopped when the non-pressure-bonding is completed, and an inspection process is performed. Then, only the acceptable tire is subjected to a pressing process by the pressing roller 24.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

It is a front view which shows one Example of the sticking apparatus of the strip | belt-shaped sponge material to the tread inner surface of this invention. It is a side view which shows a tire holding | maintenance rotary tool. It is a top view which shows a right-and-left opening-closing means notionally. It is a front view which shows a sticking tool with a support tool. (A), (B) is sectional drawing explaining operation | movement of a sticking tool. It is a side view which shows a sticking tool. It is a side view explaining the sticking state of the strip-shaped sponge material by a sticking tool. It is sectional drawing which shows an example of the tire which affixed the strip | belt-shaped sponge material. (A) is sectional drawing which shows an example of the strip | belt-shaped sponge material before sticking, (B) is sectional drawing which shows the spiral wound body. It is a perspective view explaining a tire identification means. (A), (B) is a top view explaining the sticking conditions in an inspection process. It is a flowchart explaining the sticking method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesion device of strip | belt-shaped sponge material 2 Tire holding | maintenance rotation tool 4 Pasting tool 5 Strip | belt-shaped sponge material 5A Rolling body 6 Release paper 7 Supporting roller 8 Tire support means 9 Side surface support body 10 Axial center positioning means 11 Pressing roller 12 Pressing means 20 Sponge holding frame 22 Guide roller 23 Guide sticking means 24 Pressing roller 25 Pressure contact means 43 Tire identification means 44 Including operation control means S Adhesive surface T Tire Ts Inner surface of tread

Claims (5)

A method for applying a band-like sponge material for attaching a sound-damping band-like sponge material to the tire tread inner surface in the tire circumferential direction,
The tire identification means identifies whether the tire is a buffed tire with a buff finish area as a range in which the band-like sponge material is applied in the circumferential direction on the inner surface of the tread, or a non-buff finish tire without a buff finish area,
And the identified tire is rotatably held in a standing state by a tire holding rotator,
The band-shaped sponge material is formed of a fixed-size band-shaped sponge material cut at a pasting length, and is wound in a spiral shape to form a wound body, and the sponge holding frame containing the wound body is attached to the tire lumen. Arranged
And with the rotation of the tire by the tire holding rotating tool, the fixed-size band-shaped sponge material is taken out from the sponge holding frame and guided and pasted to the inner surface of the tread by the guide pasting means having a guide roller,
When the tire is a buffed tire, the gap between the ends of the fixed-strip sponge material on the inner surface of the tread and the axial displacement of the tires on the inner surface of the tread are completed after the guide roller completes the application of the fixed-strip sponge material. An inspection process is performed to confirm that the application conditions including the above are satisfied, and after that, a fixed-size band-like sponge material that has been applied is pressed against the inner surface of the tread along with the tire rotation by a pressing roller,
Further, when the tire is a non-buffed tire, the pressure contact step is continuously performed following the completion of the application of the fixed-size band sponge material by the guide roller, and then the inspection step is performed. How to apply sponge material.   The method for pasting a strip-shaped sponge material according to claim 1, wherein, in the inspection step, when the pasting condition is not satisfied, a correction step is performed to replace the fixed-size strip-shaped sponge material. The fixed-size band-shaped sponge material has one surface as an adhesive surface, and a release paper is disposed on the adhesive surface, and the release paper is wound in a spiral shape outward in the radial direction, whereby the wound body is formed. As it is formed,
The release paper is peeled off and taken out from the wound body in synchronization with the rewinding of the band-like sponge material accompanying the rotation of the tire from the wound body held so as to be rewound by the sponge holding frame. The method for applying the strip-like sponge material according to claim 1 or 2. A band-like sponge material sticking device for sticking a band-like sponge material for damping on the tire tread inner surface in the tire circumferential direction,
A tire identification means for identifying whether the tire is a buffed tire in which a range in which the strip-like sponge material is applied to the inner surface of the tread in the circumferential direction is a buffed region or a non-buffed tire having no buffed region;
A tire holding rotator that holds the identified tire rotatably in an upright state;
An affixing tool for adhering a band-shaped sponge material to the inner surface of the tread of the tire held and rotated by the tire holding rotator,
And an operation control means for controlling the sticking tool,
In addition, the affixing tool includes a sponge holding frame that accommodates a wound body obtained by spirally winding a fixed-size band-shaped sponge material obtained by cutting the band-shaped sponge material by a bonding length, and can enter and exit the tire lumen. A guide sticking means having a guide roller for guiding and sticking the fixed-size band-shaped sponge material from the sponge holding frame to the inner surface of the tread, and a pressing roller capable of pressing the fixed-size band-shaped sponge material to be pressed against the inner surface of the tread With pressure welding means,
When the tire is a buffed tire, the operation control means, after completing the application of the fixed-size sponge material by the guide roller, and further, the distance between both ends of the fixed-size sponge material on the inner surface of the tread, After performing an inspection to confirm that the affixing conditions including deviations in the tire axial direction at both ends are satisfied, the fixed-size band-shaped sponge material that has been affixed is pressed against the inner surface of the tread with the rotation of the tire by a pressing roller,
When the tire is a non-buffed tire, the strip sponge material sticking device is characterized in that, after the sticking of the fixed-size strip sponge material by the guide roller is completed, the pressing by the pressing roller is continuously performed. The fixed-size band-shaped sponge material has one surface as an adhesive surface, and a release paper is disposed on the adhesive surface, and the release paper is wound in a spiral shape outward in the radial direction, whereby the wound body is formed. As it is formed,
The affixing tool causes the release paper to be peeled off from the wound body in synchronization with the rewinding of the band-like sponge material accompanying the rotation of the tire from the wound body held so as to be rewound by the sponge holding frame. The strip-like sponge material sticking apparatus according to claim 4, further comprising a release paper take-up roller for taking up the paper.

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