JP2011025425A - Rim replacing device of post-curing inflator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the rim replacing device of a post-curing inflator capable of achieving the automation of exchange work, capable of reducing the downtime of a vulcanizer to enhance productivity and capable of also achieving cost reduction. <P>SOLUTION: In the post-curing inflator for sealing compressed air in the vulcanized tire held by a first support 13 and a second support 16 to perform expansion cooling, a clamp/unclamp mechanism 26, which has the annular grooves 41 provided to the inner peripheral parts of both of the outside rim 11 mounted on the first flange 12 of the first support and the inside rim 14 mounted on the second flange 15 of the second support and a plurality of the locking members 42 provided to the first and second flanges in a state freely protruded and retracted in a horizontal direction and locked with the annular grooves 41 in a protruded state to prevent the separation of the outside and inside rims from the first and second flanges, is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rim exchange device in a post cure inflator (POST CURE INFLATOR: abbreviated as PCI for short) for expanding and cooling a vulcanized tire.

  For tires using nylon cords or the like as strength members, in order to cool the tires in an expanded state by injecting compressed gas into uncooled and vulcanized tires transported from the vulcanizer A post cure inflator is used.

  In the conventional turnover type (upside down type) post-cure inflator, the inner rim (the one near the center of rotation of the post-cure inflator body) and the outer rim are bolted to the mounting flange, respectively, and the tire expansion reaction force Is configured to be held by a bayonet lock mechanism provided so as to penetrate the rim central space through both rims.

  And the uncooled and vulcanized tire delivered from the vulcanizer opens the bayonet locking mechanism and moves the outer rim away from the fluid pressure cylinder, and then through the conveyor device or the vulcanizer The unloader attached to the post-cure inflator or the loader attached to the post-cure inflator can be placed on one rim, reversed when the gripping / expansion is completed, and the tire is fed to and discharged from the other set of rims. Many have been adopted.

  In general, such post-cure inflators can process tires having a plurality of types of bead diameters by exchanging rims. In Patent Document 1, if the rim is bolted or the like like the post-cure inflator described above, the replacement work is a manual operation, and there is a concern that the burden on the operator is large and a long replacement time is required. For example, a rim exchanging device as shown in FIG. 7 is proposed to simplify the rim exchanging operation.

  As shown in FIG. 7, the upper rim support 200a is fitted with an upper rim attachment 202a via an O-ring 201a and fixed by a fixing bracket 203a. Similarly, an upper rim attachment 202b is fitted to the lower rim support 200b via an O-ring 201b and is fixed by a fixing bracket 203b. The upper and lower rims 205a and 205b are attached to the upper and lower rim attachments 202a and 202b via O-rings 204a and 204b, respectively.

  At the time of mounting, the upper and lower rims 205a and 205b are pre-planted at a plurality of locations in the circumferential direction of the upper and lower rim attachments 202a and 202b, and the lower rim positioning guide pins 206a and 206b respectively. In addition to positioning on the horizontal plane, the upper and lower rim mounting brackets 207a and 207b and the upper and lower rim mounting cylinders 208a and 208b are mounted (chucked), respectively. The upper and lower rim mounting brackets 207a and 207b are previously bolted (outside setup) to a plurality of locations in the circumferential direction of the upper and lower rims 205a and 205b, and the upper and lower rim mounting cylinders 208a and 208b are The upper and lower rim attachments 202a and 202b are attached to the upper and lower rim attachment brackets 209a and 209b at positions corresponding to the upper and lower rim mounting brackets 207a and 207b, respectively. In addition to the upper and lower rim mounting cylinders 208a and 208b, upper and lower rim removal cylinders (not shown) are respectively mounted vertically on the upper and lower cylinder mounting brackets 209a and 209b.

JP-A-9-70833 Japanese Patent Application No. 2008-155375 Japanese Patent No. 2670251

  However, in the one disclosed in Patent Document 1, the phase alignment in the circumferential direction is required via the upper and lower rim positioning guide pins 206a and 206b when the upper and lower rims 205a and 205b are replaced. Therefore, there was a problem that automation could not be achieved. Further, since it is necessary to attach and remove the upper and lower rim mounting brackets 207a and 207b to the upper and lower rims 205a and 205b, there is also a problem that it takes time. If the upper and lower rim mounting brackets 207a and 207b are always attached in order to save this effort, there is a drawback that the upper and lower rims 205a and 205b are bulky when stored. There is also a problem that the rim attachment / detachment actuators (upper and lower rim mounting cylinders 208a and 208b and upper and lower rim removal cylinders) attached to the upper and lower rim attachments 202a and 202b increase.

  Accordingly, an object of the present invention is to save labor by automating the exchange work, and to reduce the time required for the exchange work, thereby reducing the downtime of the vulcanizer at the time of changeover and improving the productivity. An object of the present invention is to provide an inflator rim exchange device.

In order to achieve the above object, a post-cure inflator rim exchanging device according to the present invention is configured as follows.
(1) A substantially annular first flange that supports a bead on one side of a vulcanized tire via a rim, and a second substantially annular that supports a bead on the other side of the vulcanized tire via a rim. A post-cure inflator that performs expansion cooling by enclosing a compressed gas in the vulcanized tire sandwiched between the first flange and the second flange,
A groove provided in an inner peripheral portion of a rim attached to the first flange and the second flange, and provided in the first flange and the second flange so as to freely protrude and retract in a horizontal direction. An engaging member that engages with the groove to prevent the rim from being detached from the flange is provided.
(2) Further, in the clamp / unclamp mechanism, the engagement member is formed in a rod shape and is always urged in the protruding direction by the first spring in the storage space, and is also engaged with the engagement member. Engage with the inclined surface in a direction perpendicular to the axis of the member and is always biased in the direction in which the engaging member protrudes by the second spring in the storage space, and the end opposite to the inclined surface is placed in the storage space. And the wedge member is deeply engaged with the engaging member by pressing the end of the wedge member opposite to the inclined surface against the biasing force of the second spring. The actuator is further provided with an actuator that allows the engaging member to be moved down so that the rim can be detached from the flange.
(3) The wedge member is shallowly engaged with the engagement member even when the engagement member is biased by the first spring and engaged with the groove when the actuator is not operated. It is characterized by.
(4) In the first flange side clamp and unclamp mechanism, the actuator is installed on a lifter installed above or below the post-cure inflator body, and the second flange side clamp and unclamp mechanism. The unclamp mechanism is characterized in that it is installed on the second flange side.

According to the configuration (1), there is no work outside the rim such as mounting of mounting brackets, and there is no need for phase alignment in the circumferential direction when the rim is replaced. As a result, it is possible to save labor by automating the replacement work, and reduce the time required for the replacement work, thereby reducing the downtime of the vulcanizer at the time of changeover and improving the productivity.
According to the configuration of (2), the clamp / unclamp mechanism can be simplified using the wedge mechanism, and the actuator can be installed at an effective position.
According to the configuration of (3), the engagement member is prevented from being inadvertently pulled out of the storage space when the actuator is not operated in a state where the rim is not mounted, such as when the clamp / unclamp mechanism is assembled.
According to the configuration of (4), the actuator can be installed at an effective position, and the number of actuators installed can be reduced as much as possible in the turnover type (upside down type) post-cure inflator.

It is sectional drawing of the post-cure inflator main-body part which shows Example 1 of this invention. It is sectional drawing of a lifter part. It is principal part sectional drawing which shows the clamp state of a clamp / unclamp mechanism. It is principal part sectional drawing which shows the unclamp state of a clamp and unclamp mechanism. It is sectional drawing of an inner side rim and an outer side rim. It is explanatory drawing of an engaging member. It is explanatory drawing of a wedge member. It is an operation | movement figure of rim replacement | exchange. It is principal part sectional drawing of the conventional rim exchange apparatus.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a post-cure inflator rim exchanging device according to the present invention will be described in detail with reference to the drawings.

  1 is a cross-sectional view of a post-cure inflator main body showing Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of a lifter portion, FIG. 3 is a main portion cross-sectional view showing a clamped state of a clamp / unclamp mechanism, and FIG. 4 is a cross-sectional view of the main part showing the unclamped state of the unclamp mechanism, FIG. 4 is a cross-sectional view of the inner rim and the outer rim, FIG. 5A is an explanatory view of the engaging member, FIG. It is an operation | movement figure of exchange.

  As shown in FIGS. 1 and 2, a post-cure inflator (PCI) that holds a vulcanized tire vulcanized by a vulcanizer (main body) (not shown) and performs an inflation process is a post-cure inflator body 10. And the lifter 100.

  As shown in FIG. 1, the post-cure inflator main body 10 has a first support 13 having a first flange 12 that supports a bead (not shown) on one side of a vulcanized tire via an outer rim 11. And a second support 16 having a second flange 15 connected to the first support 13 and supporting a bead (not shown) on the other side via the inner rim 14.

  In the illustrated example, two sets of the first support body 13 and the second support body 16 are provided, and are constituted by a so-called turnover type (upside down type) post-cure inflator capable of holding two vulcanized tires. Yes. The original structure and operation of the post-cure inflator according to the present invention are the same as those already proposed by the present applicant in Patent Document 2, and will be described here with reference to the rim exchange device. .

  Then, the rotating body 17 that rotatably supports the two second supporting bodies 16 around the horizontal axis (see the rotation center O in FIG. 1) is either one locked to the second supporting body 16. Or, both the first support 13 and the first support 13 are moved in the horizontal direction by a driving means via a suspension member (not shown), and the lifter 100 detachably supports one of the first supports 13. It is designed to move up and down.

  Next, the first support 13 and the second support 16 will be described in detail. First, the two second support bodies 16 are attached to the rotating body 17 so as to be axially symmetrical so as to protrude in the radial direction, respectively, and are substantially cylindrical main bodies each opening outward in the radial direction. Part 18, an engagement part 19 having a bottomed substantially cylindrical shape that can advance and retreat coaxially from the inside of the main body part 18, and the second flange 15 attached to the main body part 18.

  The engaging portion 19 has an outer cylindrical portion 20 slidable inside the main body portion 18, a bottom portion 21 provided at the base end of the outer cylindrical portion 20, and a substantially cylindrical shape protruding from the bottom portion 21 inside the outer cylindrical portion 20. Inner cylinder part 22. The engaging portion 19 can be moved back and forth in the axial direction with respect to the main body portion 18 by a known technique (for example, see Patent Document 3), and the position thereof can be adjusted. It is possible to hold various vulcanized tires by adjusting the distance from the second flange 15. In the illustrated example, two sets of the first flange 12 and the second flange 15 having different separation distances are shown for convenience. However, since the vulcanized tires of the same size are inflated, the separation distances are actually increased. Are equal.

  Further, a locking claw 20a protrudes inward from the inner peripheral surface of the distal end of the outer cylinder portion 20. The outer cylinder portion 20 is formed with a non-circular shape, more specifically, a substantially triangular opening 20c, by a locking claw 20a. A guide insertion groove 20d along the axial direction is inserted in the inner peripheral surface of the outer cylinder portion 20 along the axial direction so that a guide shaft 34 for supporting and guiding a bead gripping claw 31 of the first support 13 described later can be inserted and removed. Is formed.

  The second flange 15 is a substantially annular member that is divided into a small-diameter portion 15a and a large-diameter portion 15b (or may be integrally formed), and is fixed to the main body portion 18, and the engaging portion 19 is a shaft. It is inserted so that it can move forward and backward. An inner rim 14 is fixed to the second flange 15 and a bead on the other side of the vulcanized tire is supported.

  Further, a vent hole (not shown) penetrating from the support surface 25a for supporting the vulcanized tire through the inner rim 14 to the opposite surface 25b in the second flange 15 radially inward of the inner rim 14. Is formed. Although not shown, a supply means for supplying compressed gas is connected to the opening of the surface 25b on the opposite side of the support surface 25a in the vent hole, so that the vulcanized product supported by the second flange 15 is connected thereto. It is possible to inflate the tire by filling it with compressed gas.

  Further, a clamp / unclamp mechanism 26, which will be described later, is provided as a rim exchange device between the second flange 15 and the inner rim 14. Further, the second flange 15 is provided with at least two rim pushing actuators (air cylinders, etc.) 27 in the circumferential direction. The rim pushing actuator 27 is provided because the inner rim 14 cannot be removed only by its own weight due to the resistance of the O-ring 28 attached to the outer peripheral surface of the small diameter portion 15a even when the clamp / unclamp mechanism 26 is in the unclamped state.

  Next, each first support 13 includes a lock shaft 30 disposed coaxially with the second support 16, a substantially annular first flange 12 through which the lock shaft 30 is inserted, and a first A bead gripping claw 31 which is a locking member for locking a bead (not shown) on one side of the vulcanized tire supported on the outer rim 11 fixed to the flange 12, and a bead gripping claw And a guide shaft 34 that is disposed substantially parallel to the lock shaft 30 and guides the first flange 12 and the support disc 33 in the axial direction. The first flange 12 is divided into a small diameter portion 12a and a large diameter portion 12b, but may be integrally formed.

  The lock shaft 30 is a substantially cylindrical member, and is inserted through the first flange 12 so that the first flange 12 can advance and retract in the axial direction. The lock shaft 30 has an outer diameter that can be inserted into the outer cylinder portion 20 of the engaging portion 19 of the second support body 16, and as a lock mechanism, a lock that protrudes radially outward on the outer peripheral surface of the tip. A claw 30a is formed. The lock claw 30a has a non-circular shape corresponding to the shape of the opening 20c, that is, a substantially triangular shape in this embodiment, so that the outer edge thereof can be inserted into the opening 20c by the locking claw 20a.

  Further, a concave portion 30b is formed in the axial direction at the tip of the lock shaft 30, and when the lock shaft 30 is inserted into the outer tube portion 20, the inner tube portion 22 can be inserted as a guide. A substantially annular stopper 35 is integrally formed on the proximal end side of the lock shaft 30. On the other hand, a square hole 30c is formed in the base end surface of the lock shaft 30 along the axial direction, and a corner head 109a of a drive shaft 109 of the switching means 106 described later can be fitted. Moreover, the stopper 35 protrudes outward in the radial direction from the lock shaft 30, thereby enabling the first flange 12 to be locked at a predetermined position on the proximal end side.

  In the lock shaft 30, a locking flange 36 that protrudes radially outward is rotatably fitted on the proximal end side of the stopper 35. Further, a ring member 37 having a non-circular inner peripheral surface is provided on the proximal side of the locking flange 36 so as to be capable of moving back and forth in the axial direction. The ring member 37 is pivotally supported by the locking flange 36 and is urged in a direction away from the locking flange 36 by a spring member (not shown) to stop the lock shaft 30 from rotating. That is, it fits with the non-circular outer periphery of the lock shaft 30.

  Further, in this embodiment, three guide shafts 34 are provided, and are disposed radially outward of the lock shaft 30 at an equiangular position around the shaft. The first flange 12 is formed with a through hole 12c through which each guide shaft 34 is inserted. Here, the guide shaft 34 is disposed so that the distal end is located on the proximal side of the lock claw 30 a of the lock shaft 30, and is fixed to the locking flange 36.

  A clamp / unclamp mechanism 26, which will be described later, is provided as a rim exchange device between the first flange 12 and the outer rim 11. The configuration of the bead gripping claws 31 and the support disk 33 described above is the same as that disclosed in Patent Document 2 (FIGS. 4 and 6, etc.), so detailed description will be omitted with reference to this. Further, the bead gripping means is not limited to that disclosed in Patent Document 2 (FIGS. 4 and 6, etc.), and various configurations can be considered.

  On the other hand, as shown in FIG. 2, the lifter 100 includes a slider 103 that extends in the vertical direction and is supported by a guide 102 that is fixed to the beam member 101 so as to be able to advance and retreat in the vertical direction, and a first support 13. And a hydraulic cylinder 105 fixed to the beam member 101. An insertion hole (not shown) is formed in the support plate 104, and the slider 103 is inserted so as to be able to advance and retract. The upper end of the slider 103 is connected to the upper plate 104 a of the support plate 104.

  The hydraulic cylinder 105 is supported upward by the beam member 101, and the piston rod tip is fixed to the support plate 104 via the support frame 113. The lifter 100 can move the support plate 104 and the first support 13 supported by the support plate 104 in the vertical direction on the beam member 101 by the expansion and contraction operation of the hydraulic cylinder 105.

  The support plate 104 includes a switching means 106 for attaching and detaching the first support 13 and the second support 16 by rotating the lock shaft 30, and the first support 13 connected to the support plate 104. An air cylinder 107 for advancing and retracting the first flange 12 is provided. The switching means 106 includes a drive shaft 109 that pivots through the center of the support plate 104 via a bearing 108, and an air that is supported by the support plate 104 so as to swing laterally and rotates the drive shaft 109. And a cylinder 110. The tip of the drive shaft 109 is formed in a square head 109a having a substantially rectangular cross section corresponding to the square hole 30c of the lock shaft 30, and is detachably fitted into the square hole 30c. The lower end of the drive shaft 109 is a crank mechanism. The piston rod is connected to the tip of the air cylinder 110 through 111. In FIG. 2, reference numeral 112 denotes a push-up member planted on the support plate 104. By pushing up the ring member 37 with the push-up member 112, the non-rotatable state of the lock shaft 30 is released and the lock member 30 becomes rotatable.

  Therefore, as shown in FIG. 2, by the extension operation of the hydraulic cylinder 105 of the lifter 100, the corner head 109 a of the drive shaft 109 is fitted into the square hole 30 c of the lock shaft, and the first support 13 is held by the support plate 104. The lock member 30 is pushed up and the ring member 37 is pushed up by the push-up member 112 to release the non-rotatable state of the lock shaft 30, and the lock shaft 30 can be rotated by extending and contracting the air cylinder 110 of the switching means 106.

  Then, by rotating the lock shaft 30 by the switching means 106, the phase of the lock claw 30a of the first support 13 with respect to the opening 20c of the engaging portion 19 of the second support 16 is adjusted around the axis. The lock shaft 30 can be inserted into and removed from the outer cylinder portion 20 of the joint portion 19 and the lock claw 30a and the locking claw 20 are engaged by rotating the lock shaft 30 in the inserted state. The first support 13 and the second support 16 can be integrated (see FIG. 1).

  Next, the above-described clamp / unclamp mechanism 26 will be described by taking the first flange 12 side as an example, but the rim clamp / unclamp actuator (air cylinder etc.) 40 which will be described later is also installed on the second flange 15 side. The structure is the same except for the location.

  As shown in FIGS. 3A, 3B, 4, 5A, and 5B, the clamp / unclamp mechanism 26 includes an inner peripheral portion of the outer rim 11 that is attached to the first flange 12 of the first support 13. An annular groove (not limited to an annular shape, which may be a long groove in an arc shape) 41 and a plurality of grooves provided in the first flange 12 so as to be movable in and out in the horizontal direction. And an engagement member 42 for preventing the outer rim 11 from being detached from the small diameter portion 12a of the first flange 12.

  In the example of illustration, the said annular groove 41 is formed in the taper surface 11a (refer FIG. 4) formed in the inner peripheral surface of the outer side rim 11 fitted with the outer peripheral surface of the said small diameter part 12a. The tapered surface 11a is gradually formed with a large diameter toward the opening on the large diameter portion 12b side of the first flange 12, and is used as an inner rim 14 attached to the second flange 15, for example. In the above, the extension stroke of the rim pushing actuator 27 described above is shortened to reduce the load, and for example, when the outer rim 11 is attached to the first flange 12, it plays a role of a guide.

  Further, the engaging member 42 is formed in a substantially round bar shape, and is always urged in the protruding direction by the first spring 44 in the storage space (hole) 43, and the engaging member 42 has the same engaging member 42. Is engaged with the inclined surface 45a in a direction perpendicular to the axis thereof, and is always urged in the storage space (hole) 46 by the second spring 47 in the direction in which the engaging member 42 protrudes, and is opposite to the inclined surface 45a. A wedge member 45 having a substantially round bar shape protruding from the storage space 46.

  The storage space 43 is formed in the small-diameter portion 12a, and the storage space 46 communicating therewith is formed across the small-diameter portion 12a, the large-diameter portion 12b, and a storage bracket 48 attached to the large-diameter portion 12b. . Further, as shown in FIG. 5A, the engaging member 42 has a protruding portion 42c that engages with the annular groove 41, a guide plate portion 42b, and inclined surface portions 42a formed on both sides of the guide plate portion 42b. As shown in FIG. 5B, the wedge member 45 is engaged with the inclined surface portion 42a to provide the above-described inclined surface 45a having a wedge action, and the inclined surface 45a is provided on one side to sandwich the guide plate portion 42b. In addition, it has a bifurcated portion 45b to be fitted and an annular protrusion 45c for preventing the above-described storage bracket 48 from coming off. In this way, the guide plate portion 42b of the engaging member 42 is fitted so that the bifurcated portion 45b of the wedge member 45 is sandwiched, so that the rotation of both members 42, 45 formed in a round bar shape can be prevented and smoothly performed. Be operated.

  Further, the wedge member 45 is deeply engaged with the engagement member 42 by pressing the end portion of the wedge member 45 opposite to the inclined surface 45 a against the urging force of the second spring 47. The above-described rim clamp / unclamp actuator 40 that allows the outer rim 11 to be detached from the first flange 12 is provided. In the present embodiment, in the case of the two inner rims 14, the rim clamp / unclamp actuator 40 is installed on the corresponding second flange 15 (may be the main body 18), but the two outer rims 11. In this case, it is installed on the support plate 104 of the lifter 100. This is because the unclamping operation of the outer rim 11 is performed only when the first support 13 is supported (connected) on the support plate 104 of the lifter 100. Accordingly, in the outer rim 11, the rim clamp / unclamp actuator 40 is installed on the lifter 100 side and the rim push-out actuator 27 is not required. Is possible.

  Furthermore, the wedge member 45 is engaged even when the engagement member 42 is urged by the first spring 44 and engaged with the annular groove 41 when the rim clamp / unclamp actuator 40 is not operated. It engages shallowly with the combined member 42 (see FIG. 3A). Accordingly, the engagement member 42 is prevented from being inadvertently pulled out of the storage space 43 when the rim clamp / unclamp actuator 40 is not operated when the rim is not mounted, such as when the clamp / unclamp mechanism 26 is assembled. The

  Since it is configured in this way, the original structure and operation of the post-cure inflator is self-evident when referring to Patent Document 2 from the above-described configuration, and therefore detailed description thereof will be omitted. Here, rim replacement is performed using FIG. A description will be given specifically for the apparatus.

  In step (1), the inner rim 14 is stacked on the outer rim 11 and conveyed to the lifter 100 of the post-cure inflator by the loader H. At this time, the outer rim 11 and the inner rim 14 are in a centered state, for example, by providing a tapered portion that fits to the inner diameter portion of the contact surface.

  In the step (2), the first support 13 is separately supported on the lifter 100 separately from the second support 16. At this time, the lock shaft 30 can be inserted into and removed from the outer cylindrical portion 20 of the engaging portion 19 in the second support 16 by the switching means 106 (see FIG. 2). Further, although a gap is generated between the outer rim 11 and the large diameter portion 12b of the first flange 12 due to the resistance of the O-ring 28, there is no problem. The clamp / unclamp mechanism 26 is in the unclamped state shown in FIG. 3B.

  In the step (3), the lifter 100 is lifted from the state of the step (2) by the extension operation of the hydraulic cylinder 105, and the second support body 16 is located directly above the lock shaft 30 of the first support body 13. The outer rim 11 is in close contact with the first flange 12 and the inner rim 14 is in close contact with the second flange 15, respectively. Then, the clamp / unclamp mechanism 26 is brought into the clamped state shown in FIG. 3A. Next, the lock shaft 30 is switched by the switching means 106 to a rotation phase that can lock the outer cylinder portion 20 of the engaging portion 19 in the second support 16.

  If the lifter 100 is lowered by the contraction operation of the hydraulic cylinder 105 in the step (4), the first support 13 is connected to the second support 16, and the turnover type (upside down type) post-cure The rim mounting on one side of the inflator is completed. Thereafter, the rim mounting on the other side may be repeated from the step (1) to the step (4) after the rotating body 17 is reversed.

  In addition, since it is obvious that the rim removal may be performed in reverse, the description is omitted. However, when the lifter 100 is lowered by the contraction operation of the hydraulic cylinder 105 in the step (3) described above, it is necessary to operate the rim pushing actuator 27 to separate the inner rim 14 from the second flange 15.

  In this way, in this embodiment, the clamp / unclamp mechanism 26 that does not require the phase alignment in the circumferential direction when replacing the rim is provided, and the metal fittings used for the clamp / unclamp that are attached to the rim are unnecessary.

  This makes it possible to (1) automate the replacement work that required manpower and save labor, (2) eliminate the need for manual work and improve safety, and (3) replace the rim. The time required for vulcanization can be shortened, and the production stop time of the vulcanizer at the time of changeover can be shortened. (4) Since the fittings used for clamping and unclamping to the rim are unnecessary, preparatory work outside the machine, etc. Is unnecessary, and it is effective in space because it is not bulky even when storing rims, etc. (5) The number of rim mounting / removing actuators is effectively installed, so the number can be reduced. Since the unclamp mechanism 26 can be installed by modification without replacing the post-cure inflator body 10 with respect to the existing machine, an effect such as low cost can be obtained.

  Needless to say, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the engaging member 42 of the clamp / unclamp mechanism 26 may be directly operated by an electromagnetic actuator or the like without using the wedge member 45. Further, the present invention is not limited to a turnover type (upside down type) post-cure inflator, and can also be applied to a post-cure inflator in which only one set of the first support 13 and the second support 16 is provided.

  The post-cure inflator rim exchanging device according to the present invention is suitable for use in a turnover type (upside down type) post-cure inflator.

DESCRIPTION OF SYMBOLS 10 Post cure inflator main body 11 Outer rim 12 First flange 13 First support body 14 Inner rim 15 Second flange 16 Second support body 17 Rotating body 18 Main body part 19 Engaging part 26 Clamp / unclamp mechanism 27 Rim pushing actuator 30 Lock shaft 30a Lock claw 34 Guide shaft 35 Stopper 37 Ring member 40 Rim clamp / unclamp actuator 42 Engaging member 42a Inclined surface 43 Storage space 44 First spring 45 Wedge member 45a Inclined surface 46 Storage space 47 First Nino Spring 100 Lifter

Claims (4)

A substantially annular first flange that supports a bead on one side of the vulcanized tire via a rim; and a substantially annular second flange that supports a bead on the other side of the vulcanized tire via a rim; In a post cure inflator that performs expansion cooling by enclosing a compressed gas in the vulcanized tire sandwiched between the first flange and the second flange,
A groove provided in an inner peripheral portion of a rim attached to the first flange and the second flange, and provided in the first flange and the second flange so as to freely protrude and retract in a horizontal direction. A post-cure inflator rim exchanging device, comprising: a clamping / unclamping mechanism having an engaging member that engages with the groove and prevents the rim from being detached from the flange.   In the clamp / unclamp mechanism, the engagement member is formed in a rod shape and is always urged in a protruding direction by a first spring in the storage space, and is perpendicular to the axis of the engagement member. A wedge member that engages with an inclined surface in the direction and is constantly biased in a direction in which the engaging member protrudes by a second spring in the storage space and protrudes from the storage space at an end opposite to the inclined surface. And the end of the wedge member opposite to the inclined surface is pressed against the urging force of the second spring, so that the wedge member is deeply engaged with the engagement member and engaged. The post-cure inflator rim exchanging device according to claim 1, further comprising an actuator that allows a joint member to be moved to disengage the rim from the flange.   The wedge member is shallowly engaged with the engagement member even when the engagement member is urged by a first spring and engaged with the groove when the actuator is not operated. Item 3. A post-cure inflator rim exchanging device according to item 2.   In the clamp and unclamp mechanism on the first flange side, the actuator is installed on a lifter installed above or below the post-cure inflator body, and in the clamp and unclamp mechanism on the second flange side. The post-cure inflator rim exchanging device according to claim 2 or 3, wherein the rim exchanging device is installed on the second flange side.

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