JP5244135B2 - Tire vulcanizer - Google Patents

Description

  The present invention relates to a tire vulcanizing apparatus that enables removal of a vulcanized tire from an upper mold and delivery to a tire receiving stand waiting below even when a BOM type bladder central mechanism is used. .

  The thing of patent document 1 is known as a vulcanizing apparatus of the tire which improved productivity. This device includes a lower mold that can reciprocate horizontally between a loading position where a green tire is carried in and a vulcanizing position where the green tire is vulcanized, and can be moved up and down at the vulcanization position and lowered. A vulcanizing mold comprising an upper mold for vulcanizing a raw tire with the lower mold is provided.

  After the green tire is mounted on the lower mold at the carry-in position, the lower mold is moved to the vulcanization position together with the green tire, and vulcanization is performed at this vulcanization position. Further, after vulcanization, the upper mold is raised while holding the vulcanized tire, so that the lower mold is returned to the loading position during the ascent and the vulcanized tire is received at the vulcanization position. Make the cradle stand by. Then, the tire removing device is operated, the vulcanized tire is removed from the rising upper mold, and the tire is delivered onto the receiving stand waiting at the lower side, whereby the vulcanized tire is carried out.

  And as the said tire removal apparatus a, as shown to FIG. 14 (A), (B), the parallel link mechanism which connected the two links c1 and c2 in parallel with the several paddle piece b distribute | arranged to a tire circumferential direction. Has been proposed that is held movably in and out of the tire radial direction by the expansion / contraction means d. In this device a, the paddle piece b can move from the reduced diameter state Yr smaller than the inner diameter of the bead portion Tb of the tire T to the expanded diameter state Ye larger than the inner diameter of the bead portion Tb. , The lower bead portion Tb2 of the vulcanized tire T is pushed down, and the tire T can be removed from the upper mold e.

JP 2004-122407 A JP 2007-320151 A

  However, although the structure using the parallel link mechanism is simple in structure, it is difficult to secure a sufficient movement distance in and out of the tire radial direction. Accordingly, in the reduced diameter state Yr, the paddle piece b is reduced in diameter to be smaller than the inner diameter of the bead ring e1 of the upper mold e, that is, the bead ring e1 is allowed to pass and waits above the lower surface e1s of the bead ring e1. It is difficult. Therefore, the paddle piece b is arranged below the bead ring e1.

On the other hand, as a bladder center mechanism that heats and expands the tire from the inside during vulcanization, as shown in FIGS. 13 (A) and (B),
(A) a so-called AFV type h1 having a lower open bag-like bladder f1 and having the lower open part f1a attached to the upper end of the bagwell g; and (B) an upper edge of a cylindrical vulcanizing bladder f2; The lower edge is held by the upper ring iU and the lower ring iL, and a so-called BOM type h2 in which a vertically movable center post j for moving the upper ring iU up and down is attached to the upper ring iU,
Things are known.

  In the case of the BOM type h2, it is necessary to raise the upper ring iU to a height position in contact with the bead ring e1 so that the bladder f2 can smoothly expand along the inner surface of the upper bead portion during vulcanization. is there. However, when the BOM type h2 bladder center mechanism is adopted in the tire removing device a, the upper ring iU comes into contact with the paddle piece b, and the upper ring iU cannot be raised to the height position. . As a result, there is a fear that the entire inner surface of the upper bead portion cannot be uniformly pressed by the bladder f2. Therefore, in Patent Document 1, an AFV type h1 bladder center mechanism that does not include the upper ring iU is employed.

  In view of this, the present invention ensures a sufficient distance in the tire radial direction of movement of the paddle piece, and allows the paddle piece to stand by on the upper side of the bead ring in the reduced diameter state, and the upper ring and the paddle piece are brought into contact with each other. An object of the present invention is to provide a tire vulcanizing apparatus that can avoid the use of a BOM type bladder center mechanism.

In order to solve the above problems, the invention of claim 1 of the present application is a lower metal plate supported by a traveling platform and capable of moving between a carry-in position where a raw tire is carried in and a vulcanization position where the raw tire is vulcanized. The vulcanized tire can be moved up and down at the vulcanization position and vulcanized by lowering the raw tire between the lower mold and descending while holding the vulcanized tire after vulcanization. A vulcanization mold comprising an upper mold to be removed from the lower mold,
A bladder center mechanism that is supported concentrically with the lower mold on the traveling platform, moves integrally with the lower mold, and holds a vulcanizing bladder,
And removing the vulcanized tire from the raised upper mold and providing a tire remover that is handed over to a tire receiving stand waiting below,
Moreover, the tire remover is
A central shaft portion having a central shaft that can freely move up and down, and an outer cylinder that is extrapolated to the central shaft and that can perform relative lifting movement and integral lifting movement with respect to the central axis;
And from the reduced diameter state that can be passed through the bead ring by being smaller than the inner diameter of the bead ring of the upper mold than the inner diameter of the bead portion of the vulcanized tire. In addition to having a paddle consisting of a plurality of paddle pieces in the tire circumferential direction that can move in and out of the tire radial direction to a large diameter expanded state,
The central axis is
The body shaft,
A constricted portion formed at the lower end of the main body shaft portion and having a smaller diameter than the main body shaft portion;
A tip portion continuous with the lower portion of the main body shaft portion through the constricted portion and having a maximum diameter portion;
The expansion / contraction means includes
A mounting bracket fixed to the outer cylinder;
A swing arm having one end pivotally supported by the first pivot shaft held by the mounting bracket and having a guide portion on the other end swinging inward and outward in the tire radial direction;
A slide body held by the guide portion and slidable in the length direction of the swing arm;
A horizontal guide portion formed at a lower end of the mounting bracket and horizontally guiding the paddle piece in and out of the tire radial direction;
And while connecting the said paddle piece guided to this horizontal guide part and the said slide body with the 2nd pivot axis parallel to the said 1st pivot axis,
The swing arm includes an arm sub-portion extending downward inward in the tire radial direction,
In addition, the swing arm has a central axis that rises relative to the outer cylinder, the tip of the arm sub-portion falls into the constricted portion of the central shaft, and from the reference position N1 that is locked to the tip. The center shaft descends relative to the outer cylinder, pushes down the arm sub-part tip, and swings inward and outward in the tire radial direction until the spring-up position N2 that springs up to the outside of the main body shaft. The paddle is expanded from the reduced diameter state to the expanded diameter state by the relative rise, and returned from the expanded diameter state to the reduced diameter state by the relative lowering.

According to a second aspect of the present invention, the bladder center mechanism includes a cylindrical vulcanizing bladder, an upper ring and a lower ring that hold the upper and lower edges thereof, and an upper end that is attached to the upper ring. It is characterized by comprising a vertically movable center post that moves the ring up and down.

In the invention of claim 3, the mounting bracket is formed from a U-shaped bracket body in which upper ends of a pair of side plate portions facing each other in the tire circumferential direction are joined by an upper plate portion,
The horizontal guide portion is formed by guide grooves formed on the outer surface of the lower end portion of each side plate portion of the metal fitting body and extending in parallel and horizontally along the tire radial direction .

  As described above, according to the present invention, as a means for expanding / contracting a tire remover, a swing arm having one end pivotally supported on a first pivot shaft and a guide portion provided on the other end is held by the guide portion. A slide body slidable in the longitudinal direction of the swing arm; and a horizontal guide portion for horizontally guiding the paddle piece in and out of the tire radial direction, and the paddle piece and the slide body are connected to a first pivot shaft. The structure is connected by a second pivot that is parallel to the axis.

  Thus, since the slide body movable in the length direction is interposed between the swing arm and the paddle piece, the moving distance in the tire radial direction of the paddle piece can be increased. Accordingly, it is possible to set the outer diameter of the reduced diameter state to be smaller than the inner diameter of the bead ring while maintaining the expanded state, that is, the paddle piece is made to wait above the lower surface of the bead ring by passing the bead ring. It becomes possible. Therefore, even when the BOM type bladder center mechanism is adopted, it is possible to avoid contact between the upper ring and the paddle piece and to press the vulcanization bladder over the entire inner surface of the upper bead portion. It becomes.

1 is a front view showing an embodiment of a tire vulcanizing apparatus of the present invention. 1 is a plan view showing a tire vulcanizing apparatus with a part thereof omitted. It is the side view which looked at the vulcanizer of a tire from the conveyance direction. It is sectional drawing from the conveyance direction which shows a vulcanization die notionally. It is sectional drawing explaining a raw tire carrying-in apparatus. It is sectional drawing which shows the positional relationship of the upper metal mold | die and a tire removal tool at the time of vulcanization | cure. It is a disassembled perspective view which shows the expansion / contraction means of a tire removal tool. It is a disassembled perspective view which shows an expansion / contraction means. (A) is sectional drawing which shows the diameter-reduced state of the paddle of a tire removal tool, (B) is sectional drawing which shows a diameter-expanded state. (A), (B) is sectional drawing explaining injection | throwing-in vulcanization | cure of the raw tire to a vulcanization metal mold | die. (A), (B) is sectional drawing explaining removal of the tire after vulcanization. It is sectional drawing explaining removal of a tire, and delivery to a tire receiving stand. (A), (B) is sectional drawing explaining a bladder center mechanism. It is sectional drawing explaining the conventional tire remover.

Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIGS. 1 and 2, the tire vulcanizing apparatus 1 according to this embodiment includes a loading position P <b> 1 where the raw tire TA is carried by being supported by the traveling platform 2, and a vulcanizing position P <b> 2 where the raw tire TA is vulcanized. And a lower mold 3 that can reciprocate between the upper mold 4 and an upper mold 4 that can move up and down at the vulcanization position P2 and vulcanize the raw tire TA with the lower mold 3 by lowering. The mold 5, the bladder center mechanism 6 that is supported concentrically with the lower mold 3 on the traveling platform 2, and the tire receiving table 7 that removes the vulcanized tire T from the raised upper mold 4 and waits at the bottom. The tire remover 8 (shown in FIG. 6) is provided.

  The tire receiving table 7 is connected to the traveling table 2, and the tire receiving table 7 is vulcanized in synchronism with the reciprocating movement between the loading position P 1 and the vulcanizing position P 2 of the lower mold 3. It can reciprocate between position P2 and pressure cooling position P3. The carry-in position P1, the vulcanization position P2, and the pressure cooling position P3 are arranged on a straight line at equal intervals, and the vulcanized tire T is pressurized and cooled at the pressure cooling position P3. A pressure cooling device 10 is provided.

  In this example, the tire vulcanizing apparatus 1 supports a frame 11 with the traveling platform 2, the upper mold 4 of the vulcanizing mold 5, a tire remover 8, and a pressure cooling apparatus 10. In addition, the lower mold 3, the bladder center mechanism 6, and the tire receiving table 7 are attached to the traveling table 2.

As shown in FIG. 3, the frame 11 includes a base-like base portion 11A in which rails 12 extending in the front-rear direction are laid, and a frame-like upper frame portion 11B that rises from the base portion 11A. Further the traveling base 2 moves, spans between the rails 12 and 12, before and after the known ball screw mechanism having a screw shaft 13 which is parallel to and the motor drive and the rail 12 (shown in FIGS. 1 and 3) in this example To do.

  Next, the vulcanization mold 5 is supported by the upper frame portion 11B and can be moved up and down at the vulcanization position P2. The vulcanization mold 5 is supported by the traveling base 2 and the vulcanization position P2 and the A lower mold 3 that can move between the loading position P1 is provided. The upper mold 4 corresponds to the upper side mold 4a corresponding to the upper sidewall portion of the tire, the upper bead ring 4b corresponding to the upper bead portion, and the tread portion, as conceptually shown in FIG. And an upper mold body 4A including a tread mold 4c having a tread segment that is divided into a plurality of tire circumferential directions and is held so as to be able to expand and contract in the tire radial direction, and an annular container that expands and contracts the tread mold 4c. A known structure including 4B is formed.

  The container 4B is attached to a first elevator 15 supported on the upper frame portion 11B via a first cylinder 14 so as to be movable up and down via a platen plate 18 (heating plate). The upper mold body 4A is attached to a second lifting / lowering table 17 supported by the first lifting / lowering table 15 via a second cylinder 16 so as to be movable up and down. The tread mold 4c is supported by the second elevator 17 so as to be slidable in and out of the tire radial direction. In this example, the second cylinder 16 is supported by, for example, a gate-shaped first auxiliary frame 15 a erected on the first lifting platform 15 and the rod of the second cylinder 16. For example, a gate-shaped second auxiliary frame 17a standing on the second lifting platform 17 is connected to the lower end. The second auxiliary frame 17a supports a third cylinder 20 having a third lifting platform 19 attached to the lower end of the rod, and the third lifting platform 19 has the tire remover 8 mounted thereon. A central shaft portion 21 constituting a part is attached.

  Accordingly, the container 4B is integrated with the first lifting platform 15 between a rising position J1U (shown in FIG. 3) which is a standby position and a lowered position J1L (shown in FIG. 3) which is a vulcanization position. Can move up and down. Further, the upper mold body 4A supported by the second lifting platform 17 can be moved up and down relatively with respect to the container 4B supported by the first lifting platform 15, and as a result of the relative rise, FIG. As shown in (A) and 11 (A), the tread mold 4c is reduced in diameter to be in a closed state, and the tread mold 4c is closed as shown in FIGS. 4, 10 (A) and 11 (B). The mold 4c is expanded in diameter to be in an open state. Further, the central shaft portion 21 supported by the third lifting platform 19 can be moved up and down relatively with respect to the upper mold body 4A supported by the second lifting platform 17, and as a result of the relative rise, As shown in 4, 6, 10 (A) to (B), a paddle 22 (to be described later) is made to wait above the lower surface of the upper bead ring 4b, and at the same time, by relative lowering, FIG. (B), as shown in FIGS. 12 (A) to (B)), the vulcanized tire T is removed from the upper mold 4 and delivered to the tire receiving stand 7.

  As shown in FIG. 4, the lower mold 3 includes a lower side mold 3a corresponding to the lower sidewall portion of the tire and a lower bead ring 3b corresponding to the lower bead portion. It is attached to a platen plate 24 fixed to the base 2 via a base plate 23.

  Next, the bladder center mechanism 6 can be moved between the carry-in position P1 and the vulcanization position P2 integrally with the lower mold 3 by being attached to the traveling platform 2. In this example, the bladder center mechanism 6 includes a cylindrical vulcanizing bladder 25, an upper ring 26A and a lower ring 26B that hold the upper and lower edges thereof, and an upper end attached to the upper ring 26A. A BOM type center mechanism having a well-structured center post 27 that moves up and down the upper ring 26A. The center post 27 is moved up and down by a cylinder 28 (shown in FIG. 3) connected to the lower end. sell.

  As shown in FIG. 6, the upper ring 26A has a base portion 25a of the vulcanizing bladder 25 in contact with the lower surface 4bS of the upper bead ring 4b so that the entire inner surface of the upper bead portion Tb1 is made of gold. The upper bead ring 4b is formed with a fitting recess 4bA into which a part of the upper end portion of the upper ring 26A enters so as to be pressed against the mold. Similarly, the lower bead ring 3b has a part of the lower end portion of the lower ring 26B so that the vulcanizing bladder 25 can press the entire inner surface of the lower bead portion against the mold during vulcanization. A fitting recess (not shown) is formed.

  As shown in FIGS. 1 and 5, the raw tire TA is concentrically carried into the lower mold 3 and the bladder center mechanism 6 of the carry-in position P1. In this example, the case of carrying in using the raw tire carrying-in device 30 is illustrated, but it can also be carried in manually. In the present example, as shown in FIG. 2, the raw tire carry-in device 30 is pivotally mounted at one end on the upper frame portion 11B and supported so as to be horizontally turnable around the pivot point Q1. The tire gripping tool 30b is attached to the other end of the turning arm 30a. The tire gripping tool 30b includes an annular frame 31 fixed to the other end of the turning arm 30a, and a plurality of cylinders 32 arranged concentrically with the annular frame 31, as shown in FIG. The lower end of the rod 32 is provided with a hook portion 32a that holds the upper bead portion Tb1 of the raw tire TA in cooperation with each other. The cylinder 32 can be tilted around the pivot point Q2 from the vertical normal state to the inclined state in which the hook portion 32a is directed toward the tire center, and the raw tire TA can be detached and attached in the inclined state.

  The loaded raw tire TA is transferred to the vulcanization position P2 together with the lower mold 3 and the bladder center mechanism 6, and then the upper mold 4 is lowered and vulcanized. The bladder center mechanism 6 inflates the vulcanizing bladder 25 at a low internal pressure that does not deform the raw tire TA during the transfer, thereby stably holding the raw tire TA, and Misalignment of the tire TA is prevented.

  Next, as shown in FIGS. 4 and 6, the tire remover 8 includes a central shaft 21 </ b> A attached to the third lift 19 via a fourth cylinder 33 so as to be lifted and lowered, and the third lift. A center shaft portion 21 having an outer cylinder 21B that is integrally attached to the base 19 and is externally attached to the center shaft 21A, and a paddle 22 that can be expanded and contracted and that is attached to the outer cylinder 21B through expansion / contraction means 34 are provided. Further, as shown in FIG. 9, the paddle 22 has a diameter smaller than the inner diameter of the upper bead ring 4b, thereby reducing the diameter of the bead portion Tb of the vulcanized tire T from the reduced diameter state Yr that can pass through the bead ring 4b. It is formed of a plurality of paddle pieces 22A in the tire circumferential direction that can move inward and outward in the radial direction of the tire up to an enlarged diameter state Ye that is larger than the inner diameter.

  Specifically, the center shaft 21A has a tip 35C connected to the lower end of the main body shaft 35A attached to the lower end of the rod of the fourth cylinder 33 and extending downward via a small diameter constricted portion 35B as shown in FIG. Prepare. In the present example, the tip 35C has a cone-like shape in which the diameter of the upper end of the cylindrical body 35C1 is increased upward and the maximum diameter K is larger at the upper end than the main body shaft 35A. A projecting portion 35C2 is provided, and a fitting portion 35C3 is provided at the lower end of the body portion 35C1 to be fitted and positioned with the central portion of the upper ring 26A.

  The outer cylinder 21B has a flange portion 21B1 projecting outward in the tire radial direction at the lower end thereof, and the expansion / contraction means 34 is attached to the flange portion 21B1.

  As shown in FIGS. 7 to 8, the expansion / contraction means 34 includes a swing arm 41 that is pivotally supported at one end on the first pivot shaft 40 and swings in and out in the tire radial direction. A slide body 43 that is held by a guide portion 41a provided on the end side and is slidable in the length direction of the swing arm 41, a horizontal guide portion 44 that horizontally guides the paddle piece 22A in and out of the tire radial direction, and the horizontal A second pivot shaft 50 is provided for connecting the paddle piece 22 </ b> A guided by the guide portion 44 and the slide body 43.

  The first pivot shaft 40 is held by a mounting bracket 45 that is fixed to the flange portion 21B1. The mounting bracket 45 is integrally attached to the bracket main body 46 and fixed to the flange portion 21B1 by connecting the upper ends of the pair of side plate portions 46a facing each other in the tire circumferential direction with the upper plate portion 46b. The fixed portion 47 is formed. Further, a first pivot shaft 40 extending in a direction perpendicular to the tire radial direction is bridged between the side plate portions 46a and 46a, and the outer surfaces of the lower end portions of the side plate portions 46a are mutually connected along the tire radial direction. A guide groove 44A extending in parallel and horizontally is formed. The guide grooves 44A and 44A constitute the horizontal guide portion 44.

  The swing arm 41 has an arm body 41A having a pivot hole 41b that pivotally supports the first pivot shaft 40 on one end side and a guide portion 41a on the other end side, and the arm body. The arm sub-portion 41 </ b> B extends downward from 41 </ b> A inward in the tire radial direction. In this example, the guide portion 41a is composed of a pair of side plate portions 41a1 parallel to each other. For example, rib-like (groove-like) guides extend in the length direction on the inward surfaces of the side plate portions 41a1. A strip 41a2 is arranged. A roller 41B1 that smoothly contacts the outer surface of the central shaft 21A is pivotally attached to the tip of the arm sub-portion 41B.

  Further, in this example, the slide body 43 has a rectangular block shape, and an outer surface of the slide body 43 is provided with a groove-shaped (or rib-shaped) engagement strip 43a guided by the guide strip 41a2.

  The paddle piece 22A is a fan-shaped plate body in this example, and a pair of side plate portions 49 are provided upright on the upper surface thereof. The side plate portion 49 is provided with an engagement portion 49a on the inner surface on the upper end side to engage with the guide groove 44A and guide the paddle piece 22A in the tire radial direction. Further, a second pivot shaft 50 that is parallel to the first pivot shaft 40 is bridged between the side plate portions 49, 49, and the slide body 43 is pivotally attached by the second pivot shaft 50. doing.

  Therefore, in the tire remover 8 of the present embodiment, as shown in FIG. 9A, the fourth cylinder 33 is contracted so that the central shaft 21A rises relative to the outer cylinder 21B, and the rocking As shown in FIG. 9B, the fourth cylinder 33 extends from the reference position N1 where the roller 41B1 at the tip of the arm sub-portion 41B of the moving arm 41 falls into the constricted portion 35B of the central shaft 21A. The center shaft 21A descends relative to the outer cylinder 21B, and the main body shaft portion 35A pushes down the roller 41B1 so that the arm main body 41A jumps up to the outer side in the tire radial direction to the jumping position N2. The swing arm 41 can swing inward and outward in the tire radial direction.

  The paddle pieces 22A can be moved inward and outward in the radial direction by the swinging of the swinging arm 41. In this embodiment, the paddle pieces 22A are moved in the length direction between the swinging arm 41 and the paddle piece 22A. A possible slide body 43 is interposed. Therefore, the tire radial movement distance L of the paddle piece 22A can be increased as compared with the case where the slide body 43 is not interposed. As a result, in the reduced diameter state Yr of the paddle 22 at the reference position N1, the paddle 22 can be passed through the bead ring 4b with the outer diameter of the paddle 22 being smaller than the inner diameter of the upper bead ring 4b. In the enlarged diameter state Ye of the paddle 22 at the position N2, the outer diameter of the paddle 22 is made larger than the inner diameter of the bead portion Tb of the vulcanized tire T, thereby preventing the passage of the vulcanized tire T. .

  However, as shown in FIG. 10 (A), in the open state in which the tread mold 4c expands in diameter, the first lifting platform 15 and the second lifting platform 17 are integrally lowered, whereby the raw tire TA is removed. Set in vulcanization mold 5. At this time, as shown in FIG. 6, the upper end portion of the upper ring 26A of the bladder center mechanism 6 enters and fits into the fitting recess 4bA of the upper bead ring 4b, and both are aligned. Thereafter, as shown in FIG. 10 (B), the first elevating platform 15 is further lowered until the container 4B comes into contact with the base plate 23, whereby the tread mold 4c is reduced in diameter and closed, and vulcanized. Is done.

  In this series of operations (setting and vulcanization of the raw tire TA in the vulcanizing mold 5), the paddle 22 of the tire remover 8 is in a reduced diameter state Yr, and the lower surface of the upper bead ring 4b. It stands by at a position above 4bS and above the upper ring 26A. Thereby, a collision between the paddle 22 and the upper ring 26A can be prevented.

  Further, after vulcanization, as shown in FIG. 11A, the upper mold 4 is raised in a closed state in which the tread mold 4c is reduced in diameter, or in a substantially closed state in which the tread mold 4c is slightly enlarged in diameter and loosened. Thereby, the upper mold 4 can be raised while holding the vulcanized tire T, and the vulcanized tire T can be removed from the lower mold 3.

  Thereafter, the lower die 3 returns from the vulcanization position P2 to the carry-in position P1, and the tire receiving stand 7 is conveyed from the pressure cooling position P3 to the vulcanization position P2. At this time, the paddle 22 slightly descends and expands to the expanded diameter Ye so that the vulcanized tire T does not fall or shift from the upper mold 4 in the raised position, and the upper bead portion Tb1 is connected to the paddle 22 It is held between the upper bead ring 4b.

  Thereafter, as shown in FIG. 11B, the tire receiving base 7 is raised, and the upper mold body 4A is lowered, and the vulcanized tire T to be held is placed on the tire receiving base 7. At this time, since the container 4B does not descend, the tread mold 4c expands in diameter and enters an open state. After that, as shown in FIG. 12, the paddle 22 is lowered while the diameter is expanded, and the lower bead portion Tb2 is sandwiched between the paddle 22 and the tire receiving base 7, and the upper mold body 4A is raised. By doing so, the vulcanized tire T is removed from the upper mold body 4A and delivered to the lower tire receiving stand 7. Further, the paddle 22 rises after returning to the reduced diameter state Yr and stands by above the lower surface 4bS of the upper bead ring 4b.

  The pressure cooling device 10 is a device that pressurizes and cools the vulcanized tire T by filling with high-pressure air, and a conventional well-known structure can be adopted.

  As described above, the particularly preferred embodiment of the present invention has been described in detail. However, the present invention is not limited to the illustrated embodiment, such as the AFV type h1 can be used as the bladder center mechanism. It can be modified to be carried out.

DESCRIPTION OF SYMBOLS 1 Tire vulcanizer 2 Traverse base 3 Lower mold 4 Upper mold 4b Bead ring 5 Vulcanization mold 6 Bladder center mechanism 7 Tire receiving stand 8 Tire removal tool 21 Central shaft part 21A Central shaft 21B Outer cylinder 22 Paddle 22A Paddle piece 25 Vulcanization bladder 26A Upper ring 26B Lower ring 27 Center post 34 Expansion / contraction means 40 First pivot shaft 41 Oscillating arm 41a Guide portion 43 Slide body 44 Horizontal guide portion 50 Second pivot shaft P1 Loading position P2 Vulcanization position T Vulcanized tire Tb Bead part TA Raw tire Ye Expanded state Yr Reduced diameter state

Claims (3)

A lower mold supported by a carriage and movable between a loading position where raw tires are carried in and a vulcanizing position where the raw tires are vulcanized, and can be moved up and down at the vulcanization position, and the lower A vulcanized mold comprising an upper mold for vulcanizing a raw tire with a mold and removing the vulcanized tire from the lower mold by raising the vulcanized tire while holding the vulcanized tire after vulcanization Mold,
A bladder center mechanism that is supported concentrically with the lower mold on the traveling platform, moves integrally with the lower mold, and holds a vulcanizing bladder,
And removing the vulcanized tire from the raised upper mold and providing a tire remover that is handed over to a tire receiving stand waiting below,
Moreover, the tire remover is
A central shaft portion having a central shaft that can freely move up and down, and an outer cylinder that is extrapolated to the central shaft and that can perform relative lifting movement and integral lifting movement with respect to the central axis;
And from the reduced diameter state that can be passed through the bead ring by being smaller than the inner diameter of the bead ring of the upper mold than the inner diameter of the bead portion of the vulcanized tire. In addition to having a paddle consisting of a plurality of paddle pieces in the tire circumferential direction that can move in and out of the tire radial direction to a large diameter expanded state,
The central axis is
The body shaft,
A constricted portion formed at the lower end of the main body shaft portion and having a smaller diameter than the main body shaft portion;
A tip portion continuous with the lower portion of the main body shaft portion through the constricted portion and having a maximum diameter portion;
The expansion / contraction means includes
A mounting bracket fixed to the outer cylinder;
A swing arm having one end pivotally supported by the first pivot shaft held by the mounting bracket and having a guide portion on the other end swinging inward and outward in the tire radial direction;
A slide body held by the guide portion and slidable in the length direction of the swing arm;
A horizontal guide portion formed at a lower end of the mounting bracket and horizontally guiding the paddle piece in and out of the tire radial direction;
And while connecting the said paddle piece guided to this horizontal guide part and the said slide body with the 2nd pivot axis parallel to the said 1st pivot axis,
The swing arm includes an arm sub-portion extending downward inward in the tire radial direction,
In addition, the swing arm has a central axis that rises relative to the outer cylinder, the tip of the arm sub-portion falls into the constricted portion of the central shaft, and from the reference position N1 that is locked to the tip. The center shaft descends relative to the outer cylinder, pushes down the arm sub-part tip, and swings inward and outward in the tire radial direction until the spring-up position N2 that springs up to the outside of the main body shaft. An apparatus for vulcanizing a tire, wherein the paddle is expanded from a reduced diameter state to an expanded diameter state by a relative rise, and returned from the expanded diameter state to a reduced diameter state by a relative lowering.   The bladder center mechanism includes a cylindrical vulcanizing bladder, an upper ring and a lower ring that hold upper and lower edges thereof, and an upper end that is attached to the upper ring and moves up and down to move the upper ring up and down. The tire vulcanizing apparatus according to claim 1, further comprising a center post. The mounting bracket is formed from a U-shaped bracket body that connects the upper ends of a pair of side plate portions facing each other in the tire circumferential direction with an upper plate portion,
3. The tire according to claim 1, wherein the horizontal guide portion is formed by guide grooves that are formed on an outer surface of a lower end portion of each side plate portion of the metal fitting body and extend parallel to each other and horizontally along the tire radial direction. Vulcanizing equipment.

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