JPH10329142A - Apparatus for grasping and cooling vulcanized tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the diameter of a revolving space and to simultaneously adjust the rim intervals of a plurality of tire grasping devices by setting the center lines of the tire grasping devices within the planes right-angled to revolving center lines and arranging a plurality of the tire grasping devices so as to shift them from the revolving center lines. SOLUTION: A lift cylinder 8 is fixed to the intermediate part of a main body frame 1 and the leading end of the piston rod 8a of the lift cylinder 8 is connected to a beam 7 and the beam 7 is raised and lowered by the action of the lift cylinder 8. A flange is formed to the outside end part of a revolving shaft 3 and a tire grasping device A is attached to the flange. A four-position system wherein four sets of grasping devices are mounted is set to one tire mold and the center lines of the respective grasping devices are respectively offset with respect to a revolving center line X. That is, the center lines of the respective grasping devices are arranged at mutually shifted positions with respect to the revolving center line X-X.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vulcanized tire for receiving a vulcanized high-temperature tire taken out of a tire vulcanizer and cooling the tire with a pressurized gas filled in the tire. It relates to a cooling device.

[0002]

2. Description of the Related Art Conventionally, it takes a little less than twice the vulcanization time to cool a vulcanized uncooled tire while the tire is being filled with a pressurized gas. For this reason, the vulcanized tire gripping and cooling device arranged in parallel behind the tire vulcanizer is equipped with two sets of tire gripping devices per tire vulcanizing die mounted in the tire vulcanizer. Have been.

Meanwhile, in recent years, a gripping cooling device of a type called a two-position turnover type in which a pair of tire gripping devices are radially arranged on a horizontally supported rotating shaft has become mainstream. Also, in tire vulcanizers, vulcanization of tires of different sizes is performed by exchanging the mold. Work is required. For this reason, many proposals have been made for improved gripping cooling devices (see Japanese Patent Application No. 7-294340).

[0004]

The vulcanization time of tires has been greatly reduced due to the recent progress in monoplying and the like. As a result, the cooling time of the vulcanized tire greatly exceeds twice the vulcanization time, and a two-position type gripping cooling device equipped with two sets of tire gripping devices per mold surface can cope. I can no longer do it. However, simply increasing the number of tire gripping devices provided increases the turning space required for the tire gripping device in the diameter direction. Further, although the stop positions at both ends of the swing can be regulated by the conventional stopper mechanism, there is a practical problem that the intermediate swing stop position cannot be regulated by the conventional stopper mechanism.

The present invention has been made in view of such circumstances, and has as its object to reduce the space for turning as compared to a case where the center line of the tire gripping device and the turning center line are arranged so as to be orthogonal to each other. Gripping and cooling of vulcanized tires of multi-position turnover type that can reduce the diameter, adjust the rim spacing of a plurality of tire gripping devices at the same time, and perform accurate 3 or 4 position regulation with a simple structure It is to provide a device.

[0006]

In order to solve the problems of the prior art, according to the present invention, (1) the center line of each tire holding device is in a plane perpendicular to the turning center line, and A plurality of tire gripping devices are arranged so as to be shifted (off center) from the turning center line (claim 1). (2) The worm wheel fixed to one end of the rim interval adjusting screw rod of each tire gripping device may be configured to mesh with a worm provided at the center of rotation (claim 2). (3) The stopper mechanism for restricting the turning stop position is a combination of a cam fixed to the turning shaft and a plurality of pairs of adjusting bolts mounted on a sliding plate slidable in parallel with the turning center line. (Claim 3).

Therefore, according to the vulcanized tire gripping and cooling device according to the present invention, (1) both the center line and the turning center line of the tire gripping device are off-centered as compared with the case where the center line and the turning center line are arranged orthogonal to each other. By doing so, it is possible to bring the mounting flange of the inner rim closer to the center of rotation, thereby preventing an increase in the diameter of the space for rotation. (2) By meshing one worm with a plurality of worm wheels, it becomes possible to simultaneously rotate a plurality of rim spacing adjusting screw rods by rotation of the worm, and to reduce a rim spacing of a plurality of tire gripping devices. It can be adjusted at the same time. (3) By combining a cam in which a stopper mechanism for restricting the rotation stop position is fixed to the rotation axis and a plurality of pairs of adjustment bolts mounted on a sliding plate slidable in parallel with the rotation center line, If a pair of adjustment bolts and a cam are used so that, for example, the cam and one adjustment bolt in a clockwise rotation and the cam and the other adjustment bolt in a counterclockwise rotation abut, two rotation stop positions are regulated. Since it becomes possible, the sliding plate can be moved to two positions,
By changing the mounting phase of one pair of adjusting bolts and the other pair of adjusting bolts, three or four positions can be regulated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a front view of a vulcanized tire gripping and cooling apparatus according to an embodiment of the present invention, as viewed from a vulcanizer side.
The left side from the center line Z-Z shows a state in which the tire T is being held and cooled while being gripped, and the right side shows a state in which the tire T in an upper position is opened for carrying in and out. In addition, only the external appearance of the tire T is shown by a virtual line, and the tire holding rim is not shown. 2 is a sectional view taken along the line II of FIG. 1, FIG. 3 is a sectional view taken along the line HH of FIG. 1, and FIG. 4 is a view taken along the line JJ of FIG.

As shown in FIGS. 1 and 2, the gripping and cooling device has a main body frame 1 installed along a vertical direction, and the main body frame 1 is mounted on a common base 2 with a tire vulcanizer. It is erected in. Further, the main frame 1 rotatably supports a turning shaft 3 arranged in a direction orthogonal to the main frame 1, and the turning shaft 3 is rotated by a drive motor 5 via a chain 4. . Further, a pair of rails 6 are fixed to the main body frame 1 along the up-down direction, and the beams 7 are assembled so as to be able to move up and down by using the rails 6 as guides. for that reason,
An elevating cylinder 8 is fixed to an intermediate portion of the main body frame 1, and the tip of a piston rod 8 a of the elevating cylinder 8 is connected to the beam 7, and the beam 7 is raised and lowered by the action of the elevating cylinder 8. Have been.

A flange is formed on the outer end of the turning shaft 3, and a tire gripping device A is attached to the flange. In this embodiment, are the 4 position form four pairs are mounted in A ₁ to A ₄ for one of the tire mold (not shown), the center of each gripping device A ₁ to A ₄ The lines U _{1 to} U ₄ are all off-center by the turning center line XX (the intersection of the YY line and the Z _{1 to} Z ₁ lines in FIG. 2) and the dimension C. That is, the center lines U _{1 to} U _{4 of the} gripping devices A _{1 to} A ₄ and the turning center line XX are arranged at positions shifted from each other.

The tire gripping device A has a cylindrical housing 9, which is fixed to a flange at the outer end of the turning shaft 3. Also, the housing 9
A rim interval adjusting screw rod 10 is rotatably incorporated in the center of the housing 9, and a claw 11 a is provided in the housing 9.
And a lock housing 11 having an inner cylinder 11b is slidably inserted and arranged. A key 12 is fixed to an outer peripheral portion of the lock housing 11, and the key 12 is
And performs the action of the detent of the lock housing 11 the inner center line U on the circumferential surface (U ₁ ~U ₄₎ and engaged with the key groove 9a formed in parallel to. Lock housing 11
A female screw is formed in the inner part of the lock housing 11 so as to engage with a male screw formed on the outer periphery of the rim distance adjusting screw rod 10.
It is configured to enter and exit from.

A worm wheel 13 is fixed to one end of the rim distance adjusting screw rod 10, while a worm 14 is rotatably mounted on the turning shaft 3 while being coaxially arranged with the turning shaft 3. Have been. In the present embodiment,
One worm 14 is meshed with four worm wheels 13, and an output shaft of a driving device 15 fixed to the turning shaft 3 is connected to the worm 14.
, The plurality of worm wheels 13 are simultaneously rotated forward or backward.

The housing 9 is provided with the inner rim 1.
A rim flange 16 for attaching the outer rim 18 is fixed to the block 20 so as to face the rim flange 16 for attaching the block 7. The inner rim 17 and the outer rim 18 are provided to hold the vulcanized uncooled tire T, and can be replaced depending on the bead diameter of the tire to be processed.

The outer rim flange 19 and the block 2
At 0, a bayonet 21 is rotatably incorporated.
Lower end outer peripheral surface of bayonet 21 and lock housing 11
A plurality of pairs of claws 21a and 11a that pass or stop depending on the relative rotation angle of the two are formed on the inner peripheral surface of the upper end of the pair. When the claws 11a and the claws 21a are locked, the upper end of the inner cylinder 11b of the lock housing 11 is inserted into the inner periphery of the bayonet 21 to form an air chamber 21b.
By injecting the pressurized gas into the air chamber 21b, the interval between the inner and outer rims 17, 18 is secured to a predetermined value via the rim flanges 16, 19. The interval is configured to be adjustable by rotating the rim interval adjusting screw rod 10.

Although not described in detail because it is well known, a detent 22 is fixed to the outer rim flange 19 when the claw 11a and the claw 21a are locked, and a detachable rotation device 23 is provided at the tip of the beam 7. The upper and lower protrusions 21c of the bayonet 21 are gripped or released by the attachment / detachment rotating device 23, and the bayonet 21 is rotated to the angle at which the claws 11a and the claws 21a are locked or passed. An air-tight member such as an O-ring is incorporated as required, and a passage for injecting a pressurized gas into the tire is also provided.

On the other hand, as shown in FIGS. 3 and 4, a cam 24 of a stopper mechanism for restricting the turning stop position of the tire gripping device A is fixed to the turning shaft 3.
Are formed with projections 24a and 24b that come into contact with an adjustment bolt described later. Further, a guide 25 is fixed to the main body frame 1, and a sliding plate 26 which is sandwiched by the guide 25 and is slidable in parallel with the turning center line XX is provided. The sliding plate 26 is configured to reciprocate by the action of driving means (not shown).

In this embodiment, when the sliding plate 26 is at the position indicated by the solid line in FIG. 4, the turning shaft 3 rotates counterclockwise and the adjusting bolt 27 that contacts the projection 24a, and the turning shaft 3 turns clockwise. A pair of adjust bolts 28 rotating in the direction and contacting the protrusions 24b, and adjusting bolts 29 also contacting the protrusions 24a and the adjust bolts 30 contacting the protrusions 24b when the sliding plate 26 is at the two-dot chain line position. A pair of adjusting bolts is provided on the sliding plate 26.
, And each is configured to be able to be prevented from rotating with a lock nut. In addition, the adjustment bolt 27 ~
The objective can be achieved by moving the cam 24 instead of moving the 30. However, a small clearance is required to move the members, and if the clearance is the same, the member is slid to a position far from the radial position. This embodiment, in which the surfaces can be arranged, is superior.

Next, the operation of the present embodiment will be described. During normal operation, the cooled tire T is moved upward U ₁
After being moved to the position, the pressurized gas filled in the tire T is discharged, and the beam 7 is lowered.
To grip. When the discharge of the pressurized gas is completed, the bayonet 21 is rotated so that the pawl 11a and the pawl 21a can pass through. Next, the beam 7 is raised, the cooled tire T is lifted by the attached unloader B, and then the vulcanized uncooled tire T is lifted, and the claws 11a and the claws 21a are locked in the reverse procedure to the above. The inside of the tire T is filled with a pressurized gas and the cooling process is started.

[0020] In this case, a state where the projection 24b of the adjusting bolt 28 and the cam 24 of the stopper mechanism is in contact, is rotated as the pivot shaft 3 in the clockwise direction, 180 ° rotation, i.e., the tire gripping device A ₁ Go to the U ₃ position,
The protrusion 24 a of the cam 24 comes into contact with the adjustment bolt 27. When the sliding plate 26 is moved to the position indicated by the two-dot chain line in the middle, the tire gripping device A1 rotates 270 degrees to rotate the cam 24.
Projection 24a contacts the adjustment bolt 29. Therefore, if the power of the drive motor 5 is turned off and coasted by a sensor (not shown) a little before, the cam 24 and the adjustment bolt 29 come into contact with each other, so that the tire gripping device A 1
Can be stopped. Adjust bolts 27 to 30
Is adjusted, each tire gripping device A _1-
The A ₄ can be stopped exactly U ₁ position.

According to the above procedure, if the loading / unloading of the tire is performed in accordance with, for example, the procedure of the tire gripping devices A ₁ , A ₃ , A ₂ , A ₄ , the cooling time which is less than four times the tire vulcanization time can be obtained. The tire gripping device A is assembled into three sets, the mounting positions of the adjustment bolts 27 to 30 are changed, the stop position of the tire gripping device A is set at a pitch of 120 degrees, and the cooling time is less than three times the tire vulcanization time. It is easy for those skilled in the art to do so.

On the other hand, when the size of the processing tire changes and the interval between the inner rim 17 and the outer rim 18 is changed, the rim is moved in the direction in which the lock housing 11 comes out via the worm 14 and the worm wheel 13 by the action of the driving device 15. The interval adjusting screw rod 10 is rotated. Then, the intervals between the four sets of the inner rim 17 and the outer rim 18 move in the direction of expanding simultaneously. Further, if the rim interval adjusting screw rod 10 is rotated in the opposite direction, the intervals between the four sets of the inner rim 17 and the outer rim 18 are simultaneously moved in the contracting direction. These four sets of rims 17,1
Numeral 8 denotes tires which are vulcanized in the same tire mold and all tires to be held and cooled have the same size. The required time is reduced to 1/4 as compared with the above.

In FIG. 2, for example, the off-center amount C of the center line U of the tire gripping device A and the turning center line XX is temporarily set to zero. That is, when the orthogonalizing the both lines, increasing the diameter D of the turning space requirements to prevent interference between the inner peripheral end T ₂ of the order of the tire adjacent to the inner peripheral end T ₁ of the mounting space Tm up to the tire T Inevitably, a space for assembling the driving means (the worm 14 and the worm wheel 13 in the present embodiment) of the rim distance adjusting screw rod 10 is required, so that the diameter D becomes large depending on the configuration. In comparison with the case where the larger diameter D has to be used, in the present embodiment, it is possible to set the necessary minimum diameter D.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes may be made without departing from the scope of the present invention. What you get.

[0025]

As described above, the vulcanized tire gripping and cooling device according to the present invention is configured as follows, and the following various effects can be obtained. (1) By setting the center of the tire gripping device and the center of rotation to be off-center, the diameter of the space required for turning can be made smaller than when both center lines are perpendicular to each other. (2) By engaging one worm with a plurality of worm wheels, the time required for adjusting the rim interval is greatly reduced, and the diameter of the space required for turning is prevented from increasing. Moreover, as compared with the case where the rim interval adjusting screw rod is individually adjusted, the number of drive devices to be installed can be reduced and cost can be reduced. (3) The stopper mechanism for restricting the turning stop position is configured by assembling two pairs of adjustment bolts on one cam and a sliding plate that slides to two positions, so that the structure is simple.
In addition, accurate 3-4 stop position regulation can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a vulcanized tire gripping and cooling device according to an embodiment of the present invention as viewed from a vulcanizer side.

FIG. 2 is a sectional view taken along the line II in FIG.

FIG. 3 is a sectional view taken along the line HH in FIG. 1;

4 is a view taken in the direction of arrows JJ in FIG. 3;

[Explanation of symbols]

 A (A1 to A4) Tire holding device U (U1 to U4) Center line of tire holding device XX Center line of turning axis 1 Body frame 2 Board 3 Rotating axis of tire holding device 4 Chain 5 Drive motor 6 Rail 7 Beam 8 Lifting Cylinder 9 Housing 10 Rim Distance Adjusting Screw Rod 11 Lock Housing 12 Key 13 Warm Wheel 14 Warm 15 Drive Device 16, 19 Rim Housing 17 Inner Rim for Holding Tire 18 Outer Rim for Holding Tire 20 Block 21 Bayonet 22 Detent 23 Detachable rotating device 24 Cam 25 Guide 26 Sliding plate 27-30 Adjusting bolt

Claims (3)

[Claims] 1. A vulcanized tire gripping and cooling device having a plurality of sets of tire gripping devices in a plane perpendicular to a turning center line, wherein the center line of the tire holding device and the turning center line are displaced from each other. A gripping and cooling device for vulcanized tires. 2. A worm wheel fixed to one end of a rim interval adjusting screw bar of each of the tire gripping devices and a worm disposed at the turning center are meshed with each other. The gripping and cooling device for a vulcanized tire according to the above. 3. A plurality of pairs of adjusters mounted on a cam fixed to a turning shaft and a sliding plate slidable in parallel with a turning center line, wherein a stopper mechanism for regulating a turning stop position of the tire gripping device is provided. The gripping cooling device for a vulcanized tire according to claim 1 or 2, comprising a bolt.