JP5097502B2 - Tire molded body manufacturing apparatus and tire molded body manufacturing method - Google Patents

Description

  The present invention relates to a tire molded body manufacturing apparatus and a tire molded body manufacturing method.

Conventionally, a tire molded body is formed by bonding a plurality of types of sheet-like rubber members such as a tread, a sidewall, and an inner liner on a molded body. Further, in recent years, a molded body having the same outer surface shape as the inner surface shape of the tire molded body is used, and a ribbon-like rubber member is spirally formed on the molded body while overlapping a part in the width direction thereof. A method has been proposed in which a sheet-like rubber member having a predetermined cross-sectional shape is wound while being wound on the molding target.
By the way, conventionally, in the process of forming a tire molded body, a gap is generated between the rubber members adjacent to each other, and air may remain in the gap.
Therefore, as a means for solving such a problem, for example, Patent Document 1 below proposes a method of winding a rubber member on a molding object in an internal space of a chamber in a reduced pressure state. Document 2 proposes a method of crushing the gap by pressing the rubber member from the outer peripheral surface side of the molding object with a pressing means while winding the rubber member on the molding object.
JP 2004-136549 A JP 2006-142671 A

However, among the conventional methods of manufacturing a tire molded body, the former cannot only avoid an increase in size and complexity of the apparatus, but also wraps a rubber member around the molded body in the internal space of the chamber in a reduced pressure state. After that, since this internal space must be opened to atmospheric pressure and the tire molded body must be taken out of the internal space and transported to the next process, in order to newly wrap the rubber member on the molded body in the internal space, There was a problem that the manufacturing time had to be prolonged after the internal space had to be decompressed again.
In the latter case, it is difficult to completely crush all the gaps by simply pressing the rubber member wound around the object to be molded.

  The present invention has been made in consideration of such circumstances, and is a tire molded body that can effectively eliminate air in the tire molded body while suppressing the increase in size and complexity of the apparatus and the manufacturing time. It aims at providing the manufacturing apparatus and the manufacturing method of a tire molding.

In order to solve the above-described problems and achieve such an object, a tire molded body manufacturing apparatus of the present invention includes a molded body that is rotatably provided about an axis, and an outer peripheral surface side of the molded body. A supply means for supplying the rubber member toward the tire, a tire molded body in the middle of molding formed by winding the rubber member around the outer peripheral surface side of the molded body, and a completed tire molding that can be held in a reduced pressure state And a chamber arranged in parallel with the supply means, and a plurality of the molded bodies are provided, and one of the molded bodies is opposed to the supply means. And moving means for relatively intermittently moving the molding object, the supply means and the chamber so that the other one is located in the internal space of the chamber. To do.
In addition, the method for manufacturing a tire molded body according to the present invention is a method for manufacturing a tire molded body in which a rubber member is wound around an outer peripheral surface side of a molded body that is rotatably provided about an axis to form a tire molded body. Then, using the tire molded body manufacturing apparatus of the present invention, while the rubber member is supplied and wound around the outer peripheral surface side of the molded body from the supply means, the rubber member is already being wound. A tire molded body or a completed tire molded body is placed in the internal space of the chamber, and the internal space is held in a decompressed state.

According to the present invention, since the chamber is provided, even when the rubber member is wound on the molding target, a gap is generated between the rubber members adjacent to each other, and air remains therein. While the tire molded body is placed in the internal space of the chamber and held in a reduced pressure state, the air can be expanded to allow the gap to communicate with the outside of the tire molded body. Remaining in the tire molded body can be suppressed.
In addition, since the chambers are arranged in parallel with the supply means and the two have different configurations, it is possible to prevent the apparatus from becoming large and complicated, and to form a tire molded body. When forming, a tire molded body in which the rubber member has already been wound or completed while the rubber member is supplied from the supply means to the outer peripheral surface side of the molded body and wound (lamination process) is completed. It is possible to place the tire molded body in the internal space of the chamber and hold the internal space in a depressurized state (depressurization process), and simultaneously perform the lamination process and the decompression process on another tire molded body. Can be done.
As described above, the air in the tire molded body can be effectively eliminated while suppressing the increase in size and complexity of the apparatus and the manufacturing time.

Here, the chamber may be provided with a pressing means supported so as to be able to advance and retreat with respect to the outer surface of the molded tire or the completed molded tire that has entered the internal space.
In this case, since the pressing means is provided in the chamber, it becomes possible to press the outer surface of the molded tire or the completed tire molded body by the pressing means after the pressure reducing step. Therefore, among the rubber members that are wound around the outer peripheral surface side of the molded body and are adjacent to each other, the portion where the gap communicated with the outside of the tire molded body at the time of the decompression step is located is closely attached to the other portion. It becomes possible to adhere to each other with the same strength as the strength, and it is possible to reliably prevent air from remaining in the product tire after vulcanization.

In addition, since the plurality of molded bodies and the moving means are provided , after winding the rubber member on one molded body, without removing the tire molded body from one molded body, The entire object to be molded is positioned in the internal space of the chamber, and the other object to be molded can be made to face the supply means. Accordingly, the manufacturing time can be further reduced, and the pressure reducing step can be performed while the tire molded body is held on the molding target. It is possible to prevent the collapse and form the tire molded body with high accuracy.

In this configuration, a plurality of the supply means may be provided along the movement direction of the movement means, and the chamber may be disposed between supply means adjacent in the movement direction.
In this case, after performing the laminating step, the pressure reducing step can be performed before performing the other laminating step, so before the gap is located deep inside the tire molded body in the process of forming the tire molded body. The decompression step can be performed. Therefore, since the gap is located deep inside the tire molded body, it is possible to prevent the gap from becoming difficult to communicate with the outside of the tire molded body during the decompression step. It can be reliably excluded.

  Further, the supply means includes an extruder for extruding a ribbon-like rubber member from the die, and the rubber member is spirally wound around the outer peripheral surface side of the molding target while overlapping a part in the width direction. It may be configured.

  According to this invention, the air in the tire molded body can be effectively eliminated while suppressing the increase in size and complexity of the apparatus and the manufacturing time.

Hereinafter, an embodiment of a tire molded body manufacturing apparatus 1 according to the present invention will be described with reference to FIGS. 1 to 8.
The tire molded body manufacturing apparatus 1 includes a first manufacturing unit 10 for forming a band molded body W1 and a band molded body W1 in a troidal shape, and various rubber members are attached to the band molded body W1 to form a tire. And a second manufacturing unit 20 that forms the body W.

  The first manufacturing unit 10 includes three work stations C1 to C3, and a first molding drum 11 formed in a cylindrical shape and a first molding that supports the first molding drum 11 so as to be rotatable around its axis O1. The carriage 12, the band molded body W1 delivered from the first molding drum 11, together with a preset bead PB, which will be described later, a transfer carriage 13 for transferring to the second manufacturing unit 20, and the first molding carriage 12 at the work stations C1 to C3. And a linear track portion 14 that reciprocally moves the transfer carriage 13 between the work station C3 and a work station F1 (described later) of the second manufacturing unit 20.

  In addition, the work stations C1, C2, and C3 are arranged along the straight track portion 14 so as to approach the second manufacturing unit 20 in this order. Further, one first molding drum 11 and one first molding carriage 12 are provided. And the 1st molding cart 12 carrying the 1st molding drum 11 moves intermittently along the linear track part 14 in order from work station C1 to C2, from C2 to C3, and from C3 to C1, This movement is repeated. Moreover, the 1st shaping | molding drum 11 is comprised by the segment arrange | positioned in multiple numbers along the circumferential direction, and can expand-contract and deform | transform by these segments being supported so that it may move synchronizing with radial direction. .

  In the work station C1, an inner liner supply device 15 and a canvas chafer supply device 16 are disposed so as to face each other with the linear track portion 14 sandwiched in a direction orthogonal to the direction in which the track portion 14 extends. Yes.

The inner liner supply device 15 includes an extruder 15a that extrudes a rubber sheet having a constant width, a conveyor 15b that conveys the rubber sheet toward the first molding drum 11, and an axis parallel to the axis O1 of the first molding drum 11. And a transfer drum 15c supported rotatably.
The canvas chafer supply device 16 includes a reel support 16a that rotatably supports a reel around which a long canvas chafer member is wound, and a canvas chafer member that is unwound from the reel to a desired length. And a cutter 16b.

In this work station C1, first, in the inner liner supply device 15, the rubber sheet cut to a predetermined length on the conveyor 15b is extended on the outer peripheral surface of the transfer drum 15c in the axial direction thereof. A plurality of inner liner members I / L are formed by arranging them in the circumferential direction without gaps, and then the drums 15c and 11 are synchronized with each other in a state where the transfer drum 15c is circumscribed to the first molding drum 11 and reverse to each other. The inner liner member I / L on the transfer drum 15c is transferred onto the outer peripheral surface of the first molding drum 11 by rotating it in the opposite direction, so that the inner liner member I / L is transferred to the outer peripheral surface of the first molding drum 11 through its entire circumference. Wrap over.
Next, in the canvas chafer supply device 16, the canvas chafer member CCH cut by the cutter 16b is separately attached to both ends of the inner liner member I / L wound around the first molding drum 11 in the direction of the axis O1. It winds over the said axis O1 direction (FIG. 2 (a)).

  Next, in the work station C2, the squeegee supply device 17 and the carcass supply device 18 are disposed so as to face each other with the linear track portion 14 sandwiched in a direction orthogonal to the direction in which the track portion 14 extends. .

The squeegee supply device 17 is provided between the extruder 17a having a die having a predetermined cross-sectional shape and the outer peripheral surface of the first molding drum 11 that has been conveyed to the work station C2 and the die, and is extruded from the die. And a sticking device (not shown) that sandwiches the ribbon-shaped rubber member in the thickness direction and guides it to the outer peripheral surface side of the first molding drum 11.
Then, a ribbon-like rubber member is extruded from the base toward the outer peripheral surface side of the first molding drum 11 that has been conveyed to the work station C2, and the rubber member is sandwiched in the thickness direction by the sticking device. The rubber member is guided to the outer peripheral surface side of the first molding drum 11 rotated about the axis O1 while controlling the position and angle, so that the rubber member is first molded while being partially overlapped in the width direction. The squeegee SQ is formed by being wound spirally around the outer peripheral surface of the drum 11 (FIG. 2B).

The carcass supply device 18 includes a reel support portion 18a that rotatably supports a plurality of reels around which a cord is wound, and an extruder 18b that covers a plurality of cords from the reel support portion 18a while extruding rubber. And a transfer drum 18c supported so as to be rotatable about an axis parallel to the axis O1 of the first molding drum 11.
Then, after passing through the extruder 18b and extending the rubber coated cord on the outer peripheral surface of the transfer drum 18c in the axial direction and arranging the cords in the circumferential direction without gaps, both ends in the axial direction are formed. A carcass member P having a desired axial length is formed by cutting, and then the drums 18c and 11 are synchronously opposite to each other in a state where the transfer drum 18c is circumscribed on the first molding drum 11. The carcass member P on the transfer drum 18 c is transferred onto the outer peripheral surface of the first molding drum 11, whereby the carcass member P is wound around the outer peripheral surface side of the first molding drum 11 over the entire circumference. At this time, the carcass member P covers the entire inner liner member I / L, canvas chafer member CCH, and squeegee member SQ (FIG. 2B).

  As described above, the band molded body W1 having the inner liner member I / L, the canvas chafer member CCH, the squeegee member SQ, and the carcass member P is formed by passing through the work stations C1 and C2 in this order.

Here, the transfer cart 13 includes a pair of expandable left and right bead gripping rings 13a that grip the preset bead PB, and an expandable / contractible band gripping ring 13b that grips the band molded body W1 from the outer peripheral surface side. .
The bead grip ring 13a is composed of a plurality of segments arranged along the circumferential direction, and magnets are embedded therein. The bead gripping ring 13a abuts against the preset bead PB from the outside in the axial direction, so that the preset bead PB is attracted to the bead gripping ring 13a by a magnetic force.
The band gripping ring 13b is composed of a plurality of segments arranged along the circumferential direction, and a magnet is embedded therein. The band gripping ring 13b comes into contact with the band molding W1 from the outside in the radial direction, so that the band molding W1 is attracted to the band gripping ring 13b by a magnetic force.

Then, in the work station C3, first, the handling robot 19a is used to take out the preset bead PB from the bead stock 19b, and the bead gripping ring 13a that has been reduced in diameter is gripped by the bead gripping ring 13a. Let's wait.
Next, at the same time as the first molding drum 11 to which the band molded body W1 is assembled reaches the work station C3, the first molding drum 11 is held by the bead holding ring 13a together with the band molded body W1. It is inserted inside the preset bead PB in the radial direction. In this state, the band gripping ring 13b is moved in a reduced diameter to grip the band molded body W1 from the outer peripheral surface side, and then the first molding drum 11 is reduced in diameter (FIG. 2 (c)). Thereafter, the band molding W1 is transferred from the first molding drum 11 to the transfer carriage 13 by returning the first molding drum 11 to the work station C1 and withdrawing from the work station C3.

  The second manufacturing unit 20 includes 13 work stations F1 to F13, and a second molding drum (molded body) 21 whose outer surface is formed in a toroidal shape, and the second molding drum 21 with its axis O2 A second molding carriage (moving means) 22 that is rotatably supported around, an endless track portion (moving means) 23 that reciprocates the second molding carriage 22 between the work stations F1 to F13, and a completed tire molded body W. Is provided with a transfer carriage 24 transferred from the second molding drum 21 and a transfer conveyor 25 for transferring the completed molded tire W to a vulcanization system (not shown).

  Twelve second molding drums 21 and two second molding carts 22 are provided. The second molding carriage 22 on which these second molding drums 21 are mounted is always located at least at the work stations F2 to F12, from the work stations F1 to F2, from F2 to F3, from F3 to F4, Endless orbit in order from F4 to F5, F5 to F6, F6 to F7, F7 to F8, F8 to F9, F9 to F10, F10 to F11, F11 to F12, and F13 to F1 It moves intermittently along the part 23 and repeats this movement.

The second molding drum 21 includes a pair of left and right core bodies 21a which are arranged in a plurality along the circumferential direction and are supported so as to be movable in the radial direction, and on the outer side in the axis O2 direction than the core bodies 21a. A pair of left and right bead lock portions 21b that are arranged along the circumferential direction and are supported so as to be movable in the radial direction, and the outer side of the bead lock portion 21b in the axis O2 direction. A pair of left and right folding bars 21c arranged in the circumferential direction in a state of being extended in the direction of the axis O2 and supported so as to be able to advance and retreat in the direction of the axis O2, a core body 21a and a bead lock A center bladder 21d made of a flexible material disposed so as to surround the portion 21b from the outside in the radial direction, and extends along the direction of the axis O2 A slider (not shown) was provided with a.
The inner end of the folding bar 21c in the direction of the axis O2 is a roller supported so as to be rotatable about the axis. The outer end of the folding bar 21c in the direction of the axis O2 is connected to the main body of the second molding drum 21 via a link mechanism (not shown).

  Here, the rigid body segment of the core body 21a is connected to the pair of left and right first expansion / contraction mechanisms 21e, and the bead lock segment of the bead lock portion 21b is connected to the pair of left and right second expansion / contraction mechanisms (not shown). The first expansion / contraction mechanism 21e, the bead lock portion 21b, and the folding bar 21c on the same side in the direction of the axis O2 are integrally supported by the slider so as to be movable along the direction of the axis O2. Yes. As a result, when the first expansion / contraction mechanism 21e, the bead lock portion 21b, and the folding bar 21c move inward in the direction of the axis O2, the core body 21a is deformed and the pair of left and right folding bars 21c approach each other. On the other hand, when the first expansion / contraction mechanism 21e, the bead lock portion 21b, and the folding bar 21c move outward in the direction of the axis O2, the core body 21a is deformed and the pair of left and right folding bars 21c are separated from each other. It is configured. In addition, the second expansion / contraction mechanism of the bead lock portion 21b is configured to operate independently of the movement of the first expansion / contraction mechanism 21e, the bead lock portion 21b, and the folding bar 21c in the direction of the axis O2. .

  Here, the transfer carriage 13 reaches the work station F1 in a state where the preset bead PB is gripped by the bead gripping ring 13a and the band molded body W1 is gripped by the band gripping ring 13b. At this time, in the second molding drum 21, the first expansion / contraction mechanism 21e, the bead lock portion 21b, and the folding bar 21c are positioned at the outer end in the direction of the axis O2, and the core body 21a and the bead lock portion 21b are reduced in diameter. In addition, the pair of left and right folding bars 21c are separated from each other, and the second molding drum 21 is inserted inside the band molded body W1 that has reached the work station F1 (FIG. 3A).

Thereafter, the bead lock portion 21b is expanded and deformed by the second expansion / contraction mechanism, whereby the preset bead PB held by the transfer carriage 13 is fixed on the second molding drum 21 together with the band molded body W1. Then, the bead gripping ring 13a and the band gripping ring 13b in the transfer carriage 13 are moved in diameter to be separated radially outward from the band molded body W1, and then the transfer carriage 13 is moved to the work station C3 of the first manufacturing unit 10. Return and leave the work station F1 (FIG. 3B).
As described above, the preset bead PB and the band molded body W1 are transferred onto the second molding drum 21.

Next, the second molding drum 21 is moved to the work station F2. The work station F2 includes a pair of left and right claws 26a and an external part that supports the claws 26a so as to be able to contact and separate from each other in the direction of the axis O2. And a driving device 26.
In the work station F2, first, while applying an internal pressure to the center bladder 21d to bulge the bladder 21d radially outward, the left and right first expansion / contraction mechanisms 21e, the bead lock portions 21b, and the folding bar 21c are moved in the direction of the axis O2. The core body 21a is expanded and deformed by expanding the inner diameter of the core body 21a, thereby causing the central portion in the axial direction of the band molded body W1 to bulge into a toroidal shape.

Thereafter, the claw 26a provided on the external drive device 26 is moved inward in the direction of the axis O2, thereby further turning the folding bar 21c in the direction of the axis O2 separately from the first expansion / contraction mechanism 21e and the bead lock portion 21b. Move towards the inside. At this time, the folding bar 21c is rotated by the link mechanism connected to the outer end so that the inner end is directed radially outward about the outer end, while the inner end is The center bladder 21d thus bulged and the core body 21a deformed in diameter expansion are ridden on each side surface.
Thereby, along each of these side surfaces, both ends of the carcass member P in the direction of the axis O2, that is, portions located outside the pair of left and right preset beads PB in the carcass member P in the direction of the axis O2 In PB, the inner portion in the radial direction on the outer surface in the direction of the axis O2 is folded back so as to cover from the outer side in the direction of the axis O2 (FIG. 4A).

The work station F2 further measures the waveform of the radial runout of the band molded body W1 formed in a toroidal shape for one round. Here, the radial runout waveform of the band molded body W1 refers to a waveform of a change in the circumferential direction of the radial distance between the axial center of the outer peripheral surface of the band molded body W1 and the axis O2. Then, the phase and amplitude of the primary harmonic component are fed back to the operations of the work stations C3 and F1 described above.
That is, one of the pair of left and right bead gripping rings 13a included in the transfer carriage 13 of the first manufacturing unit 10 is supported so that, for example, its axis can be inclined, and at the work station C3, the bead gripping is performed. After the preset bead PB is set on the ring 13a, the one bead gripping ring 13a is moved so that its axis is inclined with respect to the original axis by an angle uniquely determined from the amplitude measured at the work station F2. Let

In the work station F1, before the bead lock is performed as described above, the second molding drum 21 set at the circumferential reference position is rotated around the axis O2 by the phase measured in the work station F2. .
By the above operation, the RFV level in the product tire after vulcanization can be improved by feeding back to the molded tire molded after this measurement and canceling the primary harmonic component of the radial runout.

Next, the work station F3 includes a reel support portion 27a that rotatably supports a plurality of reels around which the cord is wound, and an extrusion that covers the plurality of cords from the reel support portion 27a while extruding the rubber. An inner belt supply device 27 provided with a machine 27b and a pasting device (not shown) that guides to the outer peripheral surface side of the second molding drum 21 by sandwiching a cord coated with rubber through the extruder 27b is provided. It has been.
And in this work station F3, the cord that has passed through the extruder 27b and is covered with rubber is pasted on the outer peripheral surface of the band molded body W1 molded into a troidal shape. At this time, by rotating the second molding drum 21 around its axis O2, moving the sticking device in the direction of the axis O2, and pasting the cord in a state inclined with respect to the axis O2, The inner belt member 1B is formed (FIG. 4B).

Next, the work station F4 includes a reel support 28a that rotatably supports a plurality of reels around which the cord is wound, and an extrusion that covers the plurality of cords from the reel support 28a while extruding the rubber. An outer belt supply device 28 provided with a machine 28b and a pasting device (not shown) that guides to the outer peripheral surface side of the second molding drum 21 by sandwiching the rubber-coated cord through the extruder 28b is provided. It has been.
And in this work station F4, the cord covered with rubber after passing through the extruder 28b is stuck on the inner belt member 1B. At this time, by rotating the second molding drum 21 around its axis O2, moving the sticking device in the direction of the axis O2, and pasting the cord in a state inclined with respect to the axis O2, The outer belt member 2B is formed (FIG. 5A).

Next, the work station F5 is provided with a spiral layer supply device 29 and a tread undercushion supply device 30.
The spiral layer supply device 29 unwinds the rubber sheet from a reel around which a narrow rubber sheet having a plurality of cords embedded therein is wound, and winds the rubber sheet spirally on the outer peripheral surface side of the second molding drum 21. Thus, the spiral layer member SL is formed (FIG. 5B).
The tread undercushion supply device 30 is provided between the extruder 30a having a die having a predetermined cross-sectional shape and the outer peripheral surface of the second molding drum 21 that has been conveyed to the work station F5 and the die. A sticking device (not shown) is provided that sandwiches the extruded ribbon-like rubber member in the thickness direction and guides it to the outer peripheral surface side of the second molding drum 21.
In this work station F5, a ribbon-like rubber member is pushed out from the base toward the outer peripheral surface side of the second molding drum 21 on which the spiral layer member SL is formed, and the rubber member is thickened by the sticking device. In a state where the rubber member is sandwiched in the direction, the rubber member is guided to the outer peripheral surface side of the second molding drum 21 rotated around the axis O2 while controlling the position and angle, so that the rubber member has a part in the width direction. The tread undercushion member TUC is formed by being spirally wound around the outer peripheral surface of the second molding drum 21 while being superimposed (FIG. 5B).

Next, a base tread supply device 31 and an antenna supply device 32 are provided in the work station F7.
Each of these supply devices 31 and 32 is provided between an extruder 31a and 32a having a die having a predetermined cross-sectional shape, and the outer peripheral surface of the second molding drum 21 conveyed to the work station F7 and the die. And a sticking device (not shown) that sandwiches the ribbon-shaped rubber member pushed out from the base in the thickness direction and guides it to the outer peripheral surface side of the second molding drum 21.

  And in this work station F7, on the outer peripheral surface side of the band molded body W1 molded into a troidal shape, a ribbon-shaped rubber member is extruded from the base of the antenna supply device 32 toward the central portion in the direction of the axis O2. In the same manner as the tread undercushion member TUC, a rubber member is spirally wound to form a highly conductive antenna member ATN, and from the base of the base tread supply device 31 toward both side portions in the direction of the axis O2. A ribbon-shaped rubber member is extruded, and similarly, the rubber member is spirally wound to form a base tread member BASE (FIG. 6A).

Next, a cap tread supply device 33 and an antenna supply device 32 are provided in the work station F9.
The cap tread supply device 33 is provided between the extruder 33a having a die having a predetermined cross-sectional shape and the outer peripheral surface of the second molding drum 21 that has been conveyed to the work station F9 and the die, and is extruded from the die. And a sticking device (not shown) that sandwiches the ribbon-shaped rubber member in the thickness direction and guides it to the outer peripheral surface side of the second molding drum 21.

  In this work station F9, on the outer peripheral surface side of the band molded body W1 formed in a troidal shape, toward the central portion in the direction of the axis O2, from the base of the antenna supply device 32, a ribbon shape is formed as in the work station F7. The rubber member is extruded, the rubber member is spirally wound to form the antenna member ATN, and the ribbon-like rubber member is extruded from the cap of the cap tread supply device 33 toward both sides in the direction of the axis O2. Then, the rubber member is spirally wound to form the cap tread member CAP (FIG. 6B).

Next, the work station F11 is provided with a sidewall supply device 34 and a rubber chafer supply device 35.
These supply devices 34 and 35 are respectively provided between the extruders 34a and 35a having a die having a predetermined cross-sectional shape and the outer peripheral surface of the second molding drum 21 conveyed to the work station F11 and the die. And a sticking device (not shown) that sandwiches the ribbon-shaped rubber member pushed out from the base in the thickness direction and guides it to the outer peripheral surface side of the second molding drum 21.

In the work station F11, on the outer surface side of the band molded body W1 formed in a troidal shape, the both ends of the cap tread member CAP in the direction of the axis O2 are directed to the respective portions continuous from the outside in the direction of the axis O2. Then, a ribbon-like rubber member is extruded from the base of the sidewall supply device 34, and the rubber member is wound around each of these portions in a spiral shape while overlapping a part in the width direction to form the sidewall member SW.
Thereafter, on the outer surface side of the band molded body W1 molded in a troidal shape, the rubber chafer feeder 35 is connected to both ends of the sidewall member SW in the direction of the axis O2 from the outside in the direction of the axis O2. A ribbon-shaped rubber member is extruded from the base, and each of these rubber members is spirally wound in the same manner as forming the sidewall member SW to form a rubber chafer member GCH (FIG. 7A).

  In the process of attaching various rubber members to the outer surface side of the band molded body W1 molded in a troidal shape at the work stations F3 to F5, F7, F9, and F11, the band molded body W1 is formed by the bead lock portion 21b. It is maintained while being held on the second molding drum 21.

The tire molded body W is formed as described above. This tire molded body W is removed from the second molding drum 21 and transferred to the transfer carriage 24 after the barcode is attached at the work station station F13. It will be posted.
Here, the transfer carriage 24 includes an expandable / contractible grip ring 24 a that grips the tire molded body W from the radially outer side, and transfers the tire molded body W from the second molding drum 21 to the transfer cart 24. In this case, the transfer carriage 24 is moved to the work station F13 where the second molding drum 21 is on standby while the grip ring 24a is expanded in diameter. Thereafter, the grip ring 24a is reduced in diameter to grip the outer peripheral surface of the tire molded body W (FIG. 7 (b)), the internal pressure of the center bladder 21d is released, the bead lock portion 21b is reduced in diameter, and the first The pair of left and right first expansion / contraction mechanisms 21e, the bead lock portion 21b, and the folding bar 21c in the two molding drum 21 are moved away from each other in the direction of the axis O2, thereby reducing the diameter of the core body 21a.

As a result, after the molded tire W gripped by the grip ring 24a is transferred to the transfer carriage 24, the transfer carriage 24 is moved away from the work station F13. Thereafter, the molded tire W is transferred from the transfer carriage 24 onto the transfer conveyor 25 and transferred toward a tire vulcanization system (not shown).
Then, the second molding carriage 22 is further moved clockwise on the endless track portion 23 to move the second molding drum 21 to the work station F1, and the same steps as described above are repeated.

  Here, in the present embodiment, in the second manufacturing unit 20, the work station F6 is disposed between the work stations F5 and F7 described above, and the work station F8 is disposed between the work stations F7 and F9. A work station F10 is disposed between the stations F9 and F11, and a work station F12 is disposed between the work stations F11 and F13. Each of these work stations F6, F8, F10 and F12 can be kept in a reduced pressure state, and is a band molded body W1 on the second molding drum 21, that is, a tire molded body W being molded, or a completed tire molded body W. A chamber 36 having an internal space into which the water enters is provided.

  That is, among the above-described supply devices 27 to 35 provided in the second manufacturing unit 20, the extruders 30a, 31a, 32a, 33a, 34a, and 35a are provided and extruded from the caps of the extruders 30a to 35a. The ribbon-shaped rubber member is wound downstream of the moving direction M of the second molding drum 21 by the second molding carriage 22 onto the supply devices 30 to 35 configured to spirally wind the outer peripheral surface of the second molding drum 21. A chamber 36 is disposed at each adjacent position. Thereby, the chamber 36 is arrange | positioned between the said supply apparatuses 30-35 adjacent in the said moving direction M. FIG.

  In the present embodiment, when the second molding carriage 22 on which the second molding drum 21 is mounted reaches the work stations F6, F8, F10, and F12, as shown in FIGS. 1 and 8, the second molding drum 21 is used. Only the tire molded body W in the middle of molding or the completed tire molded body W arranged on the outer peripheral surface thereof is positioned in the internal space of the chamber 36, and the second molded carriage 22 is positioned outside the internal space. It has become. Further, when the second molding drum 21 and the second molding carriage 22 move, the internal space of the chamber 36 is opened, and the second molding drum 21 and the second molding carriage 22 pass through the internal space. It is supposed to be.

Further, in the present embodiment, the chamber 36 is provided with a pressing means 37 that is supported so as to be able to advance and retreat with respect to the outer peripheral surface of the tire molded body W being molded supplied to the internal space or the completed tire molded body W. ing. The pressing means 37 is a roller that is rotatably supported. In addition, the pressing means 37 is, for example, an inclination angle of a rotation axis with respect to the outer surface of the tire molded body W as appropriate according to the outer shape of the molded tire molded body W supplied to the internal space or the completed tire molded body W. The pressing direction and the traveling direction can be set.

When the second molding drum 21 enters the internal space of the chamber 36, the internal space is depressurized while being kept airtight. Thereafter, when a predetermined time elapses, the internal space of the chamber 36 is opened, the pressing means 37 is moved forward, and the tire molding W in the middle of molding fixed on the second molding drum 21 or the completed tire molding. Abut against the body W. Next, while the second molding drum 21 is rotated around the axis O2, the pressing means 37 is moved in the direction of the axis O2, so that the tire molded body W being molded or the outside of the completed tire molded body W is removed. Press the surface almost over the whole area.
In the above process, at other work stations, as described above, various rubber members are attached to the tire molded body W in the middle of molding, and a plurality of processes are performed in parallel for each of the plurality of second molding drums 21. Done.

  As described above, according to the tire molded body manufacturing apparatus 1 according to the present embodiment, since the chamber 36 is provided, the rubber member is formed of the tire molded body W in the middle of molding or the completed tire molded body W. Even when a gap is generated between adjacent rubber members when air is wound around the outer surface, the tire molding W is placed in the internal space of the chamber 36 and kept in a reduced pressure state even if air remains in the gap. While the air is inflated, the gap can be communicated with the outside of the tire molded body W, and the air can be prevented from remaining in the tire molded body W.

Further, since this chamber 36 is arranged in parallel with each of the supply means 30 to 35 and both have different configurations, it is possible to prevent the apparatus from becoming large or complicated. At the same time, when the tire molded body W is formed, the rubber members are already supplied and wound around the outer peripheral surface side of the second molding drum 21 from the supply means 30 to 35 (lamination step). It is possible to place the tire molded body W in the process of being wound or the completed tire molded body W in the internal space of the chamber 36 and hold the internal space 36 in a decompressed state (decompression process). The laminating step and the pressure reducing step can be performed simultaneously for different tire molded bodies W in parallel.
As described above, the air in the tire molded body W can be effectively eliminated while suppressing the increase in size and complexity of the apparatus and the manufacturing time.

  Furthermore, in this embodiment, since the pressing means 37 is provided in the chamber 36, after the said pressure reduction process, the outer surface of the tire molded body W in the middle of molding or the completed tire molded body W is pressed by the pressing means 37. Of the rubber members wound around the outer peripheral surface side of the second molding drum 21 and adjacent to each other, a portion where the gap that is communicated with the outside of the tire molded body W at the time of the pressure reduction step is located. In addition, it becomes possible to adhere to each other with the same strength as the adhesion strength in other portions, and it is possible to reliably prevent air from remaining in the product tire after vulcanization.

  Further, in the present embodiment, a plurality of second molding drums 21 are provided, one of these molding drums 21 is made to face one of the supply means 30 to 35, and the other one is plural. Since the molding drum 21 is intermittently moved in the moving direction M so as to be positioned in the internal space of one of the chambers 36, a rubber member is wound on the second molding drum 21. Later, the tire molding W is not removed from the molding drum 21, but the drum 21 is placed in the internal space of the chamber 36, and the other second molding drum 21 faces the supply means 30 to 35. It becomes possible. Accordingly, the manufacturing time can be further reduced, and the pressure reduction process can be performed while the tire molded body W is held on the second molding drum 21. The shape of W can be prevented from collapsing, and the molded tire W can be formed with high accuracy.

  Further, in the present embodiment, a plurality of the supply units 30 to 35 are provided along the movement direction M, and the chamber 36 is interposed between the supply units 30 to 35 adjacent to each other in the movement direction M. Since the pressure reducing step can be performed after the lamination step and before performing the other lamination step, the gap is formed deep inside the tire molded body W in the process of forming the tire molded body W. It is possible to perform the depressurization step before being positioned at the position. Therefore, since the gap is located deep inside the tire molded body W, it is possible to prevent the gap from becoming difficult to communicate with the outside of the tire molded body W during the decompression step. The air inside can be surely eliminated.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the tire molded body W being molded or the completed tire molded body W is entered into the internal space of the chamber 36 together with the second molding drum 21, but instead of this, the second molding drum The tire molded body W in the middle of molding removed from 21 or the completed tire molded body W may be placed in the internal space, and the internal space may be held in a decompressed state.
Further, the first manufacturing unit 10 may not be provided in the tire molded body manufacturing apparatus 1.

  Furthermore, although a plurality of chambers 36 are provided, only one may be provided. Furthermore, in the said embodiment, it has extruder 30a, 31a, 32a, 33a, 34a, 35a among each supply apparatus 27-35 provided in the 2nd manufacturing unit 20, and extruder 30a- The ribbon-shaped rubber member extruded from the die 35a is spirally wound around the outer surface of the tire molded body W in the middle of molding. The chambers 36 are arranged at positions adjacent to each other on the downstream side in the moving direction. However, the chamber 36 is not limited to this, and is arranged, for example, between the work stations F3 and F4 or between the work stations F4 and F5. May be.

In the embodiment, the preset bead PB in which the bead filler and the bead core are preset in advance is set in the transfer cart 13, but instead, in the work station C3, only the bead core is set in the transfer cart 13, and the bead filler is replaced with another one. It may be assembled at the work station.
Furthermore, each rubber member which comprises the tire molded body W is not restricted to the said embodiment, You may change suitably.

Further, the pressing means 37 may not be provided. Even if the pressing means 37 is not provided, if the air in the gap is expanded in the internal space of the chamber 36 and the gap is communicated with the outside, the next rubber member is attached to the tire molded body W at the subsequent work station. When the wire is wound, the portions where the gap is generated can be brought into close contact with each other with the same strength as the close contact strength in the other portions.
Furthermore, instead of the embodiment, the first molding drum 11 and the second molding drum 21 may be fixed at fixed positions and the supply devices 27 to 35, the chamber 36, and the like may be moved.

Further, in place of the second molding drum 21 shown in the above embodiment, for example, a configuration in which the folding bar 21c is not included among the core body 21a, the bead lock portion 21b, the folding bar 21c, the center bladder 21d, and the slider is adopted. May be. In other words, as long as the molded body can hold the molded tire W, a molded body that does not have a mechanism for folding the carcass member P such as the folding bar 21c may be adopted.
Furthermore, in the said embodiment, although the whole 2nd molded object 21 moved along the said moving direction M and showed the structure located in the interior space of the chamber 36, it replaces with this, for example, a core body 21a, a bead Of the lock portion 21b, the folding bar 21c, the center bladder 21d, and the slider, the core body 21a, the bead locking portion 21b, and the center bladder that can hold the molded tire W without moving the mechanism for folding the carcass member P such as the folding bar 21c. Only 21d or the like may be moved and positioned in the internal space of the chamber 36.
Furthermore, instead of the folding bar 21c, for example, a bladder that bulges and deforms when an internal pressure is applied may be employed.

  It is possible to effectively eliminate the air in the tire molded body while increasing the size and complexity of the apparatus and reducing the manufacturing time.

It is a schematic plan view of the manufacturing apparatus of the tire molding shown as one Embodiment which concerns on this invention. It is the schematic which shows the process in which a band molding is formed using the manufacturing apparatus of the tire molding shown in FIG. It is the schematic which shows the process of delivering a band molding to the 2nd molding drum using the manufacturing apparatus of the tire molding shown in FIG. It is the schematic which shows the state which folded the ply on the 2nd molding drum using the manufacturing apparatus of the tire molding shown in FIG. 1, and the state which wound the inner side belt member. It is the schematic which shows the state which wound the outer side belt member, the spiral layer member, and the tread undercushion member on the 2nd molding drum using the manufacturing apparatus of the tire molding shown in FIG. It is the schematic which shows the process in which a tread member is wound around the 2nd molding drum using the manufacturing apparatus of the tire molding shown in FIG. It is the schematic which shows the state which wound the side wall member and the rubber chafer member on the 2nd molding drum using the manufacturing apparatus of the tire molding shown in FIG. 1, and the state which hold | gripped the completed tire molding with the holding ring. It is the schematic which shows the state which put the tire molded object in the middle of shaping | molding, and the completed tire molded object in the internal space of the chamber in a pressure reduction state using the manufacturing apparatus of the tire molded object shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus of tire molding 11 1st molding drum 12 2nd molding drum (molding object)
22 Second molding cart (moving means)
23 Endless track (moving means)
27 Inner belt supply device (supply means)
28 Inner belt supply device (supply means)
29 Spiral layer supply device (supply means)
30 Tread undercushion supply device (supply means)
30a, 31a, 32a, 33a, 34a, 35a Extruder 31 Base tread supply device (supply means)
32 Antenna supply device (supply means)
33 Cap tread supply device (supply means)
34 Side wall supply device (supply means)
35 Rubber chafer supply device (supply means)
36 Chamber 37 Pressing means M Movement direction W Tire molded body W1 Band molded body (tire molded body in the middle of molding)
O1 Axis of the first molding drum O2 Axis of the second molding drum (axis)

Claims (5)

A molded body provided to be rotatable around an axis,
Supply means for supplying a rubber member toward the outer peripheral surface side of the molded body;
The pressure supply state can be maintained and an internal space into which a molded tire or a completed molded tire is formed by winding the rubber member around the outer peripheral surface of the molded body, and the supply is provided. A chamber juxtaposed with the means ,
A plurality of the moldings are provided,
Relative to these molding bodies, the feeding means and the chamber are relative to each other so that one of the molding bodies faces the supply means and the other one is positioned in the internal space of the chamber. An apparatus for manufacturing a molded tire comprising a moving means for intermittently moving . An apparatus for manufacturing a molded tire according to claim 1,
The chamber is provided with pressing means supported so as to be capable of advancing and retreating with respect to the outer surface of a molded tire or a completed tire that has entered the internal space. Manufacturing equipment. An apparatus for manufacturing a molded tire according to claim 1 or 2 ,
A plurality of the supply means are provided along the moving direction of the moving means, and the chamber is disposed between the supply means adjacent to each other in the moving direction. . The tire molded body manufacturing apparatus according to any one of claims 1 to 3 ,
The supply means includes an extruder for extruding a ribbon-shaped rubber member from the die, and the rubber member is spirally wound around the outer peripheral surface side of the molding target while overlapping a part of the width direction. An apparatus for producing a molded tire, characterized in that A method of manufacturing a tire molded body that forms a tire molded body by wrapping a rubber member around an outer peripheral surface side of a molded body that is rotatably provided around an axis,
Using the tire molded body manufacturing apparatus according to any one of claims 1 to 4 ,
While the rubber member is supplied from the supply means to the outer peripheral surface side of the molded body and wound, the molded tire or the completed tire molded body in which the rubber member is already wound is placed inside the chamber. The method for producing a molded tire is characterized in that the internal space is held in a decompressed state.

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