JPH04371811A - Postcure inflator and conveying device to that - Google Patents

Abstract

PURPOSE:To provide a postcure inflator and a conveying device to that which can perform reliably centering to a lower rim of a tire and prevents also the postcure inflator from becoming to glow larger. CONSTITUTION:In a postcure inflator where a tire T which is from a vulcanizing machine and has completed vulcanization is held by placing between an upper and lower freely detachable rims 31, 32 and it performs expansion and cooling by enclosing high pressure air into the tire, it is constituted so that a slide device 3 reciprocating the lower rim 32 up to an intermediate position P1 of a vulcanizing machine side from a lower position of the upper rim 32 is provided and the tire T which has completed the vulcanization can be put directly on the lower rim 31 which is at the intermediate position P1. A device which possesses a chuck 16 holding an upper bead UB of the tire and is turnable freely up to the intermediate position P1 from the center of the vulcanizing machine of the tire and by a freely elevatable conveying arm 15 is preferable as a conveying device to the lower rim 31 which is at the intermediate position P1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a post-cure inflator for expanding and cooling a vulcanized tire and a device for carrying the same, and particularly to an inflator that ensures centering of the vulcanized tire and the lower rim.

0002

[Prior Art] In order to make the inflation and cooling time of an inflated tire longer than one cycle time of the tire vulcanizer, a conventional post-cure inflator has two upper and lower rims that sandwich the tire in one cavity of the tire vulcanizer. There are 2 sets,
A vertically inverted post-cure inflator called a turn-on bar type is widely used.

By the way, for the inflation and cooling of tires that require high precision, such as recent radial tires, it is necessary to ensure that the vulcanized tire from the tire vulcanizer is correctly positioned on the lower rim of the post-cure inflator. There is now a need for a loading device that can perform centering. but,
Since the vertically inverted post-cure inflator rotates two sets of upper and lower rims, there is a space restriction for installing a centering mechanism, and various conveying devices have been proposed. For example, the bottom surface of a vulcanized tire is supported from a tire vulcanizer, placed on a belt conveyor between the tire vulcanizer and a post-cure inflator, carried to the top of the lower rim, and then centered to raise the lower rim. The underside of the cured tire is supported by a conveyor (see Utility Model Publication No. 63-12971) or an arm taken out from the tire vulcanizer, carried to an intermediate position between the tire vulcanizer and the post-cure inflator, and then post-cured from there. There is a conveying device that lifts the lower rim after placing it on the retracting arm of the inflator and transporting it to the top of the lower rim.
(See Publication No. 16). In addition, it has a chuck that grips the upper bead of the cured tire, and can freely rotate from the center of the tire vulcanizer to an intermediate position, and has a transport arm that can be raised and lowered to move the post-cure inflator from the center of the tire vulcanizer to the center of the post-cure inflator. There is a transport device that transports the tire to the lower rim (see Japanese Patent Laid-Open No. 14933/1983).

0004

[Problems to be Solved by the Invention] However, conveyance devices that use a belt conveyor or a retractable arm have a complicated mechanism, but they also have the problem that centering is not as expected. In addition, in the case of a transport device that transports tires to the lower rim at the center of the post-cure inflator using a transport arm that can be rotated and raised and lowered, the transport device intrudes between the upper and lower rims, which lengthens the distance between the upper and lower rims that can freely approach and separate. There is a problem that the inflator becomes larger.

[0005] The present invention has been made in view of the problems of the prior art, and its purpose is to ensure centering of the tire to the lower rim and to improve the stability of the post-cure inflator. It is an object of the present invention to provide a post-cure inflator that can prevent the increase in size, and a conveyance device therefor.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the post-cure inflator of the present invention sandwiches a vulcanized tire from a vulcanizer between upper and lower rims that can freely approach and separate,
A post-cure inflator that expands and cools a tire by sealing high-pressure air inside the tire is equipped with a slide device that reciprocates the lower rim from a position below the upper rim to an intermediate position on the vulcanizer side.

[0007] Furthermore, the conveyance device for the post-cure inflator of the present invention transports the cured tire from the tire vulcanizer to the lower rim located at the intermediate position of the slide device in the post-cure inflator according to claim 1. It has a chuck that grips the upper bead of the tire, is rotatable from the center of the tire vulcanizer to an intermediate position, and is operated by a transport arm that can be raised and lowered.

[0008]

[Operation] If the lower rim itself can be reciprocated to the intermediate position using a slide device, a vulcanized tire can be placed on the lower rim at the intermediate position without being subject to upper spatial restrictions.

[0009] With the transfer arm having a chuck and being able to rotate and move up and down, the vulcanized tire from the tire vulcanizer can be placed on the lower rim at an intermediate position with high centering accuracy.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the post-cure inflator and conveyance device of the present invention, and FIG. 2 is a top view of the post-cure inflator and conveyance device of the present invention.

In FIGS. 1 and 2, 1 is a tire vulcanizer, 2 is a conveying device, 3 is a slide device, and 4 is a post-cure inflator.

The tire vulcanizer 1 has an upper mold and a lower mold 11 which can be opened and closed by an elevating device (not shown) and which are tightened by a tightening cylinder (not shown). For example, it is provided with a standing post type central mechanism 12. In the illustrated example, the upper and lower molds are in an open state, and the vulcanized tire T is peeled off from the lower mold 11 by the central mechanism 12 at the position (3).

The conveying device 2 is a frame 1 of a tire vulcanizer 1.
3, and consists of a vertical support 14, a transfer arm 15 that can be raised and lowered and rotated freely with respect to the support 14 by means of a plurality of cylinder devices (not shown), and a chuck 16 at the tip of the transfer arm. . chuck 16
, three or more claws 16a are arranged at equal intervals in the circumferential direction, and the claws 16a are moved by a cylinder device (not shown).
are configured to expand or contract in diameter all at once in the radial direction. The pawl 16a with a reduced diameter is inserted into the tire T, and the pawl 16
When a expands in diameter, the tire T is gripped by the upper bead UB, and when the pawl 16a contracts in diameter at a predetermined position, the tire T is released. As shown in FIG. 2, this chuck has a turning center O3, and is designed to reciprocate between the center O1 of the tire vulcanizer 1 and a first position P1 of a slide device 2, which will be described next. . Returning to FIG. 1, the tire T can be raised to the ■ position, turned to the ■ position, and further lowered to the ■ position. Then, the tire T at the position ■ is moved to the post-cure inflator 4 by the slide device 3.
It is different from the conventional method in that it is placed on the lower rim 31 which is moving from the position P1 to the first position P1.

The slide device 3 is composed of groove-shaped rails 17 and 18 that are arranged opposite to each other in a horizontal plane, a carrier 19 that is movable along the rails 17 and 18, and a cylinder device 20 that is connected to the carrier 19. ing. As shown in FIG. 2, the carrier 19 can freely reciprocate between the first position P1 and the second position P2 with the lower rim 31 fitted therein, and slides the tire T from the ■ position to the ■ position. Furthermore, the detailed structure of the slide device 3 will be explained with reference to FIG. The carrier 19 is positioned by a roller follower 19a that runs within the grooves of the rails 17 and 18, and a roller follower 19b that runs while abutting against the side surfaces of the rails 17 and 18. The rod 20a of the cylinder device 20 is connected to the carrier 19 via the bracket 19c, and the carrier 19 reciprocates as the rod 20a expands and contracts. Further, the carrier 19 is provided with a circumferential wall 19d into which the lower rim is fitted and placed, and a triple hole 19e through which a post-cure inflator lifting device described below passes.

In FIG. 1, the post-cure inflator 4 is centered around two sets of upper and lower rims 31 and 32 that are movable toward and away from each other.
2, and has a lifting device 33 for allowing the lower rim 31 located at the second position P2 to move toward and away from the upper rim 32. The overall general structure is as follows. Rotating frame 34
A pedestal 35 is attached to the pedestal 35, and a movable part 35a that can be moved up and down with respect to the pedestal 35 is attached to the lower part of the pedestal 35 by a cylinder device (not shown). A locking shaft 36 that can be rotated by a predetermined angle by a cylinder device 37 is supported on this pedestal 35 . This locking shaft 3
The tip of 6 is a male type locking unevenness 36a, and this locking unevenness 36a passes through the female type locking unevenness 31a of the lower rim 31 and rotates by a predetermined angle in the space 31b, whereby the upper and lower rims 31, 32 are integrated. Furthermore, the lower rim 31 released from the locking shaft 36 can be freely moved toward and away from the carrier 19 of the slide device 3 by the lifting device 33 . Then, the tire T at the ■ position becomes the expanded cooling state where high pressure air is filled as shown in Fig. 4, and furthermore, as shown in Fig. 1.
It will be in the reverse ■ position as shown below.

Further, the main parts of the post-cure inflator will be explained with reference to FIG. As shown in the lower rim 31 inserted and placed on the carrier 19, the lower rim 31 is attached to the locking pin 3.
It has a hole 31c in which a hole 1d is provided upright. On the other hand, the tip of the lifting device 33 has a cylindrical portion 33a containing a collet chuck 33b that can be opened and closed. Further, a positioning ring 31e is attached to the side surface of the lower rim 31, and this ring 31e is inserted into a guide 34a provided upright on the rotating frame 34, thereby preventing the lower rim 31 from falling off. Further, the columnar part 33a of the lifting device 33 is connected to the lower rim 31.
When inserted into the hole 31c, the locking pin 31d is pulled down and fixed by the collet chuck 33b, overcoming the adhesive force between the tire T and the upper rim 32, and locking the lower rim 3.
1 and tires T can be pulled down. In addition, 38 is a rack and pinion device for inverting the rotating frame 34 by 180 degrees, and 39 is a rack and pinion device for reversing the rotating frame 34 by 180 degrees.
40 is a locking device that can be attached and detached from the upper and lower rims 3;
This is a spacer used when changing the interval between numbers 1 and 32. In addition to the method of using the spacer shown in this figure as a mechanism for changing the interval between the upper and lower rims, there is also a method of using screws.

Next, the operation of the above-described post-cure inflator and the conveying device therefor will be explained. In FIG. 1, first, the lower rim 31 is lowered together with the expanded and cooled tire by the lifting device 33, and the expanded and cooled tire is released in the direction of the arrow 41 by a transport arm (not shown). Then, the vulcanized tire T sequentially moves from the ■ position to the ■ position. That is, the tire vulcanizer 1 is transported by the conveyor device 2.
The vulcanized tire T at position ■ rises to position ■, turns to position ■, and descends to position ■. At the position ■ of the tire T, the lower rim 31 is waiting at the first position P1 of the slide device 3, and the tire T is placed on the lower rim 3.
Get on top of 1. As shown in FIG. 2, the center of rotation of the conveyance device is at O3, and the tire at the center O1 of the tire vulcanizer 1 is conveyed to the first position P1 by a rotational motion, compared to a conveyance device that uses a conveyor or the like. However, the tire can be accurately centered on the lower rim 31 using a simple conveyance device. Further, this first position P1 is located at an intermediate position between the tire vulcanizer 1 and the post-cure inflator 4, and is adjacent to the maintenance space. therefore,
An operator can easily visually check whether there is an abnormality in the centering of the tire with respect to the lower rim 31.

[0018] Then, the tire T at the position ■ on the lower rim 31 becomes the position ■ due to the movement of the carrier 19. Since it moves together with the lower rim 31, the centering of the tire T with respect to the lower rim 31 is maintained as it is. Then, the lower rim 31 approaches the upper rim 32 by the lifting device 33, the tire T is sandwiched between the upper and lower rims 31 and 32, the locking shaft 36 is rotated by the cylinder device 37 to fix the sandwiched state, and high pressure air is sealed. It becomes an expansion cooling state. Then, the rotating frame 34 is rotated 180 degrees around O2, and enters the standby state at the ■ position. By the way, ■From the position■
Since the lateral movement to the position is performed together with the lower rim 31, the distance H between the lower end of the locking shaft 36 and the tire T needs to be the minimum that can accommodate the size of the tire, and the height of the post-cure inflator 4 can be kept the same as the conventional one. It can be made to the same level or lower.

It should be noted that by utilizing the slide device 3, it is possible to easily replace the upper and lower rims 31 and 32, so the procedure for installing new upper and lower rims will be explained as an example. In FIG. 2, the first position P1 is located from the maintenance space.
Place the set of upper and lower rims 31 and 32 on the carrier 19 located at . Then, the slide device 3 causes the slide device 3 to move laterally to the second position P2. In FIG. 4, when the set of upper and lower rims 31 and 32 is raised by the lifting device 33, the upper surface of the upper rim 32 comes into contact with the movable part 35a of the base 35, so the locking device 39 moves the upper rim 32 to the movable part 35a. Fixed to. Then, the lower rim 31 may be lowered to the carrier 19 and moved laterally to the first position P1 in FIG. Additionally, the upper and lower rims can be easily removed by reversing the above steps. In this way, the upper and lower rims 31, 32 can be removed by simply placing the upper and lower rims 31, 32 on the carrier 19 in a maintenance space with sufficient space.
can be replaced. In other words, the user is freed from the difficult task of mounting a heavy upper rim in a narrow space, and safety is improved.

[0020]

[Effects of the Invention] The post-cure inflator of the present invention is equipped with a slide device that reciprocates the lower rim from a position below the upper rim to an intermediate position on the vulcanizer side, without being subject to upper spatial restrictions. Since the vulcanized tire can be directly placed on the lower rim, the vulcanized tire can be reliably centered on the post-cure inflator using a loading device with a simple mechanism. Further, by using this intermediate position, it is possible to easily exchange the upper and lower rims when changing tire size. Furthermore, since it is placed on the lower rim at an intermediate position adjacent to the maintenance space, it is easy to visually check for abnormal centering of the vulcanized tire.

[0021] The conveyance device to the post-cure inflator of the present invention has a chuck that grips the upper bead of the tire to convey the cured tire to the lower rim located at the intermediate position of the slide device. This is carried out by a transfer arm that can be freely rotated from the center to an intermediate position and can be raised and lowered, and the vulcanized tire from the tire vulcanizer is accurately placed on the lower rim located at the intermediate position. Ideal as a loading device for post-cure inflators with slide devices.

[Brief explanation of the drawing]

FIG. 1 is a side view of a post-cure inflator and a conveyance device of the present invention.

FIG. 2 is a top view of the post-cure inflator and conveyance device of the present invention.

FIG. 3 is a detailed view of the slide device.

FIG. 4 is a cross-sectional view taken along line XX in FIG. 2, and is a cross-sectional view showing essential parts of the post-cure inflator.

[Explanation of symbols]

1 Tire vulcanizer 2 Conveyance device 3 Slide device 4 Post cure inflator 15 Transfer arm 16 Chuck 31 Lower rim 32 Upper rim P1 1st position (intermediate position)

Claims (2)

[Claims] Claim 1: In a post-cure inflator in which a vulcanized tire from a vulcanizer is sandwiched between upper and lower rims that can be moved in and out, and high-pressure air is injected into the tire to expand and cool the tire, the lower rim is connected to the upper rim. A post-cure inflator characterized by being provided with a slide device that reciprocates from a lower position to an intermediate position on the vulcanizer side. 2. A post-cure inflator according to claim 1, wherein the post-cure inflator according to claim 1 has a chuck that grips the upper bead of the tire to transport the vulcanized tire from the tire vulcanizer to the lower rim located at an intermediate position of the slide device; A loading device for a post-cure inflator, characterized in that it is capable of rotating from the center of a tire vulcanizer to an intermediate position, and that the loading device is operated by a conveying arm that can be raised and lowered.