JP5760634B2 - Conveying apparatus and conveying method for vulcanized tire - Google Patents

Description

  The present invention relates to a vulcanized tire conveyance device and conveyance method, and more specifically, vulcanized tire conveyance that can convey a vulcanized tire without deformation and smoothly attach it to a post-cure inflator. The present invention relates to an apparatus and a conveyance method.

  In the manufacture of pneumatic tires with carcass layers made of organic fiber cords, such as passenger car tires, if the vulcanized tire taken out of the tire vulcanizer is left to cool naturally, the heat shrinkage of the organic fiber cord The tire shape may be deformed. Therefore, the vulcanized tire is attached to a post-cure inflator immediately after being taken out from the tire vulcanizer, and is subjected to a post-cure inflation process in which the tire is naturally cooled in an inflated state in which air is injected. At this time, the vulcanized tire is generally conveyed from the tire vulcanizer to the post-cure inflator in a state where the vulcanized tire is horizontally suspended through one bead portion.

  By the way, in recent years, in order to improve the fuel efficiency of a passenger car, it is required to reduce the weight by reducing the thickness of the side portion of the pneumatic tire. However, since the rigidity of such a thin tire is greatly reduced, the tire shape changes while being conveyed from the tire vulcanizer to the post-cure inflator, and the interval between both beads is reduced. As a result, the upper and lower bead portions cannot be assembled with the rims of the upper and lower seat rings of the post-cure inflator, so that the rim cannot be normally inflated.

  Thus, due to the fact that the pneumatic tire is greatly reduced in thickness, a new problem has arisen that has not been possible in the past, such that it cannot be smoothly mounted on the post-cure inflator.

  For example, as in Patent Document 1, it is known to use a transport device that is suspended horizontally via both bead portions of a tire.

  However, in the above conveying device, since both the bead portions are only held from below, deformation of the tire due to heat shrinkage of the organic fiber cord of the carcass layer cannot be prevented.

JP 2007-62310 A

  An object of the present invention is to provide a vulcanized tire conveyance device and a conveyance method that can convey a tire immediately after vulcanization without deformation and smoothly attach it to a post-cure inflator.

The vulcanized tire conveying device of the present invention that achieves the above object is a vulcanized tire conveying apparatus that hangs a vulcanized tire immediately after vulcanization horizontally and conveys it from a tire vulcanizer to a post cure inflator. A plurality of holding claws that protrude in the horizontal direction from the tip of a holding claw fixing bar extending vertically and hold the upper bead part of the vulcanized tire from below; and a pressing claw fixing bar extending vertically A plurality of pressing claws that protrude in the horizontal direction from the distal end of the upper portion and press the lower bead portion from above, and at least one of the holding claw and the pressing claw can be moved up and down, and the holding claw fixing rod The pressing claw fixing rod is configured to be rotatable around each axis .

The vulcanized tire conveyance method of the present invention is a vulcanized tire conveyance method in which a vulcanized tire immediately after vulcanization is horizontally suspended and conveyed from a tire vulcanizer to a post cure inflator. The holding claws protruding in the horizontal direction from the tip of the holding claw fixing rod extending vertically and the pressing claw protruding in the horizontal direction from the tip of the pressing claw fixing rod extending vertically are respectively radially inward of the vulcanized tire. The bead portion on the upper side of the vulcanized tire is inserted into the inside of the vulcanized tire in a state of being directed to, and the holding claw fixing rod is rotated around its axis so that the holding claw is directed outward in the tire radial direction. was held from below by the holding claws, the pressing pawl is brought into contact with the pressing pawl retainer bar the pressing pawl is rotated about its axis at the top of the bead portion of the lower side to the outer side in the tire radial direction, At least one of the holding and pressing nails Presses the over de section, is characterized in that conveyed in a state of spacing is fixed to the preset predetermined intervals between both bead portions.

  According to the vulcanized tire conveying apparatus and conveying method of the present invention, when the vulcanized tire immediately after vulcanization is horizontally suspended and conveyed from the tire vulcanizer to the post cure inflator, the upper bead The holding nail is held from below, the pressing claw is brought into contact with the upper part of the lower bead portion, and the bead portion is pressed by at least one of the holding claw and the pressing nail, so that the interval between the two bead portions is preset. Since the predetermined interval is fixed, the tire immediately after vulcanization can be transported without being deformed and smoothly mounted on the post-cure inflator.

  About the conveying apparatus of the vulcanized tire of this invention, while arrange | positioning so that a several holding | maintenance nail | claw and a press nail | claw may be the same number, and each may become equal intervals in the circumferential direction, the distance between both bead parts is circumferential Therefore, the tire immediately after vulcanization can be more smoothly attached to the post cure inflator.

The holding claw and the pressing claw are protruded horizontally from the ends of the holding claw fixing bar and the pressing claw fixing bar extending vertically, and the holding claw fixing bar and the pressing claw fixing bar are rotated about the axial direction. Since it is configured to be possible, it is possible to easily carry the vulcanized tire.

  Further, for the vulcanized tire vulcanizing method of the present invention, the predetermined interval set in advance is larger than the vertical interval between the upper and lower seat rings when the rim is assembled to the post cure inflator by a predetermined expected amount. By doing so, the space | interval of both bead parts at the time of mounting | wearing to a post-cure inflator can be made more appropriate.

It is sectional drawing which shows the conveying apparatus of the vulcanized tire which consists of embodiment of this invention. It is sectional drawing of XX shown in FIG. It is sectional drawing which shows the other example of arrangement | positioning of the holding nail | claw and a press nail | claw in FIG. It is sectional drawing explaining the role of the conveying apparatus of the vulcanized tire in the manufacturing process of a pneumatic tire. It is an end view which shows the conveying apparatus in the extraction preparation position of the vulcanized tire from a tire vulcanizer. It is an end view which shows the conveying apparatus which takes out the vulcanized tire from a tire vulcanizer. It is an end view which shows the conveying apparatus which conveys a vulcanized tire in the state which fixed the up-and-down space | interval of a holding nail | claw and a press nail | claw to the predetermined spacing set beforehand. It is an end elevation which shows the state in which the conveying apparatus of the vulcanized tire of a reference example exists in the taking-out preparation position of the vulcanized tire from a tire vulcanizer. It is an end elevation which shows the state which the conveying apparatus of the vulcanized tire of a reference example is moving the holding nail | claw and the press nail | claw toward the radial direction outer side of a vulcanized tire. It is an end elevation which shows the state which the conveying apparatus of the vulcanized tire of a reference example has taken out the vulcanized tire from the tire vulcanizer. It is an end elevation which shows the state which conveys a vulcanized tire in the state which the conveying apparatus of the vulcanized tire of the reference example fixed the up-and-down space | interval of a holding nail | claw and a press nail to the predetermined space | interval set beforehand.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a vulcanized tire conveying apparatus according to an embodiment of the present invention.
This vulcanized tire conveying device 1 (hereinafter referred to as “conveying device 1”) is a vulcanized tire 3 in which the carcass layer 2 is made of an organic fiber cord, and is horizontal (the meridian section of the tire is substantially horizontal). ) And is provided with a plurality of holding claw fixing rods 5 and pressing claw fixing rods 6 each formed of a round bar extending downward from the bottom surface of the disk-shaped main body 4.

  A holding claw 5 a protrudes in the horizontal direction from the tip of the holding claw fixing rod 5, and can be held and held on the upper bead portion 7 of the vulcanized tire 3 from below. Further, the pressing claw 6a protrudes in the horizontal direction from the distal end portion of the pressing claw fixing rod 6, and can come into contact with the lower bead portion 8 from above. At least one of the holding claw fixing bar 5 and the pressing claw fixing bar 6 is configured to be stretchable so that the holding claw 5a and / or the pressing claw 6a can move up and down. These holding claws 5a and / or pressing claws 6a are moved individually or synchronously.

  Further, the holding claw fixing rod 5 and the pressing claw fixing rod 6 are configured to be rotationally driven around the axial direction by a drive mechanism (not shown) attached to the main body 4. By rotating the holding claw fixing rod 5 and the pressing claw fixing rod 6 by the drive mechanism, the holding claw 5a and the pressing claw 6a can be directed to the inside or the outside in the tire radial direction, respectively.

  The holding claw 5a and the pressing claw 6a are desirably arranged on the same circumference as shown in FIG. FIG. 2 shows a case where the holding claw 5a and the pressing claw 6a are arranged at the same circumferential position. The plurality of holding claw fixing rods 5 and pressing claw fixing rods 6 are arranged such that the holding claw fixing rods 5 are arranged on the circumference, while the pressing claw fixing rods 6 are located on the inner side of the holding claw fixing rods 5. It is arranged on the circumference. Moreover, as shown in FIG. 3, the holding claw fixing rod 5 and the pressing claw fixing rod 6 can be arranged alternately in the circumferential direction on the same circumference. 2 and 3, the number of the holding claws 5a and the pressing claws 6a is six. However, the number of the holding claws 5a and the pressing claws 6a is not limited to three as long as the number is three or more. Good.

  In the pneumatic tire manufacturing process, the conveying device 1 is vulcanized from a tire vulcanizer 9 to a post-cure inflator 10 as shown in FIG. 4 by a turning arm (not shown) connected to the main body 4. The used tire 3 is conveyed.

  The post-cure inflator 10 is mainly composed of a pair of disc-shaped seat rings 12A and 12B each having a rim 11 formed on the outer periphery, and a column 13 that can be moved up and down connected to the upper seat ring 12A. The vulcanized tire 3 is assembled with a rim between the upper and lower seat rings 12A and 12B and filled with compressed air from the gas supply port 14 provided on the lower seat ring 12B to perform post-cure inflation. It is like that.

  A method for transporting the vulcanized tire 3 using such a transport device 1 will be described below with reference to FIGS. The vulcanized tire 3 to be transported is a thinned tire in which the rubber thickness of the side portion is reduced. As such a thinned tire, in a tire for a passenger car (145 to 315 mm width), a pneumatic tire in which the minimum rubber thickness of the side portion is about 1.0 to 3.0 mm is exemplified.

  First, as shown in FIG. 5, the holding claws 5 a and the pressing claws 6 a are directed inward with respect to the vulcanized tire 3 immediately after vulcanization that is mounted in a state where it can be taken out from the tire vulcanizer 9. Then, the holding claw 5a and the pressing claw 6a are inserted inside the tire.

  Next, as shown in FIG. 6, the holding claw fixing rod 5 is rotated by a drive mechanism (not shown) so that the holding claw 5 a is directed outward in the tire radial direction, and the bead portion 7 on the upper side of the vulcanized tire 3 is viewed from below. Lock and hold, lift up and remove from tire vulcanizer 9.

  At this time, since the vulcanized tire 3 is thinned as described above, the tire deforms due to the stress G applied to the inside of the tire due to the thermal contraction of the organic fiber cord of the carcass layer 2 in this state. Since the distance between the bead portions 7 and 8 is reduced, the post-cure inflator 10 cannot be inflated with the rim assembled normally.

  Accordingly, as shown in FIG. 7, the pressing claw fixing rod 6 is rotated to move the pressing claw 6a downward while facing the outer side in the tire radial direction, and the interval between the bead portions 7 and 8 is set in advance. The lower bead portion 8 is pressed from above by the pressing claw 6a so that the interval L is equal to the interval L (the same as the interval between the upper and lower rims 11, 11 of the post-cure inflator 10 when the rim is assembled). And it conveys to the post-cure inflator 10 with fixing in the state. The pressing of the lower bead portion 8 by the pressing claw 6a is preferably started simultaneously with or immediately after the holding of the upper bead portion 7 by the holding claw 5a.

  Thus, when the vulcanized tire 3 is horizontally suspended and conveyed, the interval between the bead portions 7 and 8 is fixed to a predetermined interval L set in advance. The vulcanized tire 3 can be smoothly mounted on the post-cure inflator 10 to fill the vulcanized tire 3 without leaking compressed air.

  In the example of the transport method described above, the holding claw fixing rod 5 has a fixed length and the pressing fixing rod 6 extends downward. However, the invention is not limited to this. The claw 6a may be brought into contact with the upper portion of the lower bead portion 8, and the holding claw fixing rod 5 may be reduced so that the upper bead portion 7 is pressed from below by the holding claw 5a. Alternatively, both the holding claw fixing rod 5 and the pressing claw rod 6 can be expanded and contracted, and the bead portions 7 and 8 can be pressed up and down by the holding claw 5a and the pressing claw 6a by contracting or extending each. .

For reference , a reference example in which the holding claw 5a and the pressing claw 6a are moved in the radial direction of the vulcanized tire 3 instead of rotating as described above will be shown below . Specifically, in this reference example, the holding claw fixing rod 5 and the pressing claw fixing rod 6 are respectively placed in the radial direction of the vulcanized tire 3 with the holding claw 5a and the pressing claw 6a facing outward (main body). It is configured to be movable (radially with respect to the center of 4). In this case, as in the case of rotating as described above, the holding claws 5a and the pressing claws 6a are arranged on the same circumference or alternately in the circumferential direction on the same circumference. You can also. The holding claw fixing rod 5 and the pressing claw fixing rod 6 are moved by a driving mechanism (not shown) attached to the main body 4.

  A method of transporting the vulcanized tire 3 when driving the holding claw fixing rod 5 and the pressing claw fixing rod 6 in this way will be described below with reference to FIGS.

  First, as shown in FIG. 8, the holding claw fixing rod 5 and the pressing claw fixing rod 6 are attached to the vulcanized tire 3 just after vulcanization that is mounted in a state where it can be taken out from the tire vulcanizer 9. The conveying device 1 that has been moved inward in the radial direction is approached from above, and the holding claws 5a and the pressing claws 6a at the ends are inserted into the tire inside.

  Next, as shown in FIG. 9, the holding claw fixing rod 5 and the pressing claw fixing rod 6 are moved outward in the tire radial direction by a driving mechanism (not shown), so that the holding claw 5 a and the pressing claw 6 a are vulcanized tires. 3 above the upper bead portion 7 and above the lower bead portion 8.

  Next, as shown in FIG. 10, the holding claw fixing rod 5 is reduced, the holding claw 5 a is moved upward, held and held on the upper bead portion 7, and lifted upward to be tire vulcanizer 9. Remove from. Further, the pressing claw fixing rod 6 is extended to move the pressing claw 6a downward.

  Then, as shown in FIG. 11, the lower bead portion 8 is pressed from above with the pressing claw 6a so that the distance between the bead portions 7 and 8 becomes a predetermined interval L set in advance, and in this state The post-cure inflator 10 is transported while being fixed. The pressing of the lower bead portion 8 by the pressing claw 6a is preferably started simultaneously with or immediately after the holding of the upper bead portion 7 by the holding claw 5a.

  Further, in the example of the transport method described above, only the pressing and fixing rod 6 is extended downward. However, the present invention is not limited to this, and at least one of the holding claw fixing rod 5 and the pressing and fixing rod 6 is reduced or extended. Thus, the bead portions 7 and 8 may be pressed by the holding claw 5a and / or the pressing claw 6a.

  It is desirable that the plurality of holding claws 5a and pressing claws 6a described above have the same number and are arranged at equal intervals in the circumferential direction. By doing so, both the bead portions 7 and 8 of the vulcanized tire 3 can be pressed uniformly in the circumferential direction, so that the distance between both bead portions 7 and 8 is constant in the circumferential direction. Therefore, the vulcanized tire 3 can be mounted on the post-cure inflator 10 more smoothly.

  In addition, the carcass layer 2 is slightly between the time when the vulcanized tire 3 is disposed on the post-cure inflator 10 and is removed from the conveying device 1 until the rim is assembled between the upper and lower seat rings 12A and 12B. The tire is deformed by heat shrinkage. Therefore, as shown in FIGS. 7 and 11, when the lower bead portion 8 is pressed from above with the pressing claw 6 a, the distance between the bead portions 7 and 8 is set to a predetermined expected amount rather than the predetermined distance L. It is preferable to enlarge it. Thus, by considering the tire deformation at the time of assembling the rim, the interval between the bead portions 7 and 8 when the post-cure inflator 10 is mounted can be made more appropriate.

  The pneumatic tire of the same specification with a tire size of 225 / 65R17 is used with the transport device 1 (Example) of the present invention shown in FIGS. 1 and 2 and the conventional transport device (Comparative Example) that does not have the pressing claw 6a. Then, when 100 tires were conveyed from the tire vulcanizer 10 to the post cure inflator 10, the number of tires that could be normally attached to the post cure inflator 10 was examined, and the results are shown in Table 1.

  From the results of Table 1, it was found that the tire immediately after vulcanization can be transported without being deformed and smoothly mounted on the post-cure inflator by the transport device and transport method of the present invention.

DESCRIPTION OF SYMBOLS 1 Conveyed apparatus of vulcanized tire 2 Carcass layer 3 Vulcanized tire 4 Main body 5 Holding claw fixing rod 5a Holding claw 6 Pressing claw fixing rod 6a Pressing claw 7 Upper bead portion 8 Lower bead portion 9 Tire vulcanizer 10 Post cure inflator 11 Rim 12 Seat ring 13 Post

Claims (4)

A vulcanized tire conveying device that horizontally hangs a vulcanized tire immediately after vulcanization and conveys it from a tire vulcanizer to a post cure inflator,
A plurality of holding claws that protrude in the horizontal direction from the tip of the holding claw fixing rod extending vertically and hold the upper bead portion of the vulcanized tire from below, and a horizontal direction from the tip of the pressing claw fixing rod extending vertically And a plurality of pressing claws that press the lower bead portion from above, and at least one of the holding claw and the pressing claw can be moved up and down, and the holding claw fixing bar and the pressing claw fixing bar are A vulcanized tire conveyance device characterized by being configured to be rotatable about each axis .   2. The vulcanized tire transport device according to claim 1, wherein the plurality of holding claws and the pressure claws are arranged in the same number and arranged at equal intervals in the circumferential direction. A method for transporting a vulcanized tire in which a vulcanized tire immediately after vulcanization is horizontally suspended and transported from a tire vulcanizer to a post-cure inflator,
The holding claw protruding in the horizontal direction from the tip of the holding claw fixing rod extending vertically and the pressing claw protruding in the horizontal direction from the tip of the pressing claw fixing rod extending vertically are directed radially inward of the vulcanized tire. was inserted inside the vulcanized tire at a state, the upper bead portion of the vulcanized tire toward the retaining claws on the outer side in the tire radial direction by rotating the holding claw fixing rod around its axis The holding claw is held from below, the pressing claw fixing rod is rotated around its axis, the pressing claw is directed outwardly in the tire radial direction , the pressing claw is brought into contact with the upper portion of the lower bead portion, and the holding claw is held. A method for transporting a vulcanized tire, wherein the bead portion is pressed with at least one of the claw and the pressing claw and transported in a state in which the distance between both bead portions is fixed at a predetermined interval. The method for conveying a vulcanized tire according to claim 3 , wherein the predetermined interval set in advance is larger than a vertical interval between upper and lower seat rings when the rim is assembled to the post-cure inflator by a predetermined expected amount. .

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