JPS6348699B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rim mounting method and a rim mounting device for a tire uniformity machine.

(Prior art) The tire is equipped with an upper rim on the upper spindle side and a lower rim on the lower spindle side that are fitted into the bead of the tire, and the tire lifted from above the tire conveying means is held between the upper rim and the lower rim from above and below. A tire uniformity machine in which a tire is rotated about its axis by rotation of an upper spindle about its axis is known from Japanese Patent Application Laid-open No. 144442/1983.

By the way, in the tire uniformity machine described in the above publication, the upper rim and the lower rim are attached to the upper and lower spindles using bolt fastening means, and therefore, the attachment of the upper rim is carried out in the following manner.

That is, the tire conveyor is temporarily stopped, a plurality of hydraulic jacks are placed on top of it via a base, and the upper rim is placed on a mounting table placed on the hydraulic jacks. The upper rim was lifted up and the upper rim was fastened to the upper spindle for installation.

(Problem to be Solved by the Invention) According to the prior art described above, in order to lift the upper rim, the jack must be placed on a base on the tire conveyor, and the conveyor must be temporarily stopped during that time. However, because of the tire uniformity machine installed in the tire production line, the tire production line had to be stopped or relayed, which caused problems in terms of productivity.

Furthermore, in order to assemble and install the rim while maintaining its mounting accuracy, it takes a very long time and requires a skilled workforce.Moreover, the rim itself is quite heavy, and the work space is limited. Because the rims are relatively narrow, the rim replacement work, which is all done by hand, requires harsh working conditions.

Furthermore, if the tire size is different, the rim size must necessarily be adjusted to match the tire size, which makes the rim mounting more and more troublesome.

In addition, this type of machine requires extremely high precision and is an expensive inspection machine, so it is economically disadvantageous to make it a specialized machine for one tire size. Although it is advantageous to mulch so that it can be used for
As mentioned above, installing rims is very troublesome, so in order to reduce the number of rim replacements, current tire uniformity machines specify the tire size within a certain range and adjust the tire size required within this range. Currently, it is used as a semi-dedicated type in which various rims are prepared and placed, and even with this, the rim installation work is still extremely troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rim mounting method and device that solve the above-mentioned problems in tire uniformity machines.

(Means for Achieving the Object) The present invention includes an upper rim 9 on the upper spindle 6 side and a lower rim 10 on the lower spindle 7 side that are fitted into the bead portions T ₁ and T ₂ of the tire T, and the tire transport Means 2 A tire uniform structure in which a tire T lifted from above is held between an upper rim 9 and a lower rim 10 from above and below, and the tire T is rotated about its axis by rotation of an upper spindle 6 about its axis. In the method of attaching the rim to the Tey machine, the following technical measures are taken to achieve the stated purpose.

That is, in the present invention, the upper rim 9, the lower rim 10, and the lower spindle according to the size of the tire T are attached to the holding holes 17 of the assembly workbench 16, which has a plurality of holding holes 17 provided below the tire conveying means 2. 7 is assembled and held in advance before installing the tire.
Assembly workbench 1 is placed on the extension of the axis of the upper spindle 6.
Elevating member 8A that moves up and down through the holding hole 17 of No. 6
The upper rim 9, the lower rim 10, and the lower spindle 7 which are assembled and held are raised in the assembled state, and the upper rim 9 is moved up to the upper spindle 6.
Then, with the upper rim 9 attached to the upper spindle 6, both the lower rim 10 and the lower spindle 7 are lowered below the tire conveying means 2 by lowering the elevating member 8A, and then One bead part T ₁ of tire T
Fit the lower rim 10 into the upper rim 9 and lift the tire T by raising the elevating member 8A together with the lower spindle 7, and fit the other bead part _T2 into the upper rim 9 from below to move the tire T between the upper rim 9 and the lower rim. It is characterized by being held between the upper and lower sides by 10.

Further, the present invention moves an assembly workbench 16 having a plurality of holding holes 17 below the tire conveying means 2 so that each holding hole 17 is selected and aligned with the axial extension line of the upper spindle 6. The upper rim 9, the lower rim 10, and the lower spindle 7 are assembled below the tire conveying means 2 with a height H greater than the assembly height when the upper rim 9, the lower rim 10, and the lower spindle 7 are assembled. A workbench 16 is provided, and an elevating member 8A is provided below the assembly workbench 16 and on the axial extension line of the upper spindle 6, and which vertically passes through the holding hole 17 and moves up and down. A further feature is that a locking means 27 is provided which allows the upper rim 9 to be detachably fixed to the upper spindle 6.

(Embodiments and Effects) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1 showing an example of a tire uniformity machine, the tire uniformity machine includes a main frame 1 provided with a roller conveyor device 2 as a means for conveying tires T, and an upper spindle 6 disposed perpendicularly thereto. A lower spindle 7 is disposed concentrically with the tire axis in a vertically corresponding manner, and an upper spindle 6 is rotatable by a rotary drive device 5.
An upper rim 9 is held at the lower end of the upper spindle 6. On the other hand, the lower spindle 7 is supported by an elevating member (piston rod) 8A in an elevating device 8 such as a hydraulic cylinder, a lower rim 10 is held at the upper end of the lower spindle 7, and a tire T is attached to the upper and lower rims 9, 10. At this time, the upper and lower spindles 6, 7 are made to be able to rotate together, and by being equipped with a load applying device 3 and a load detecting device 4, uniformity work is performed.

Referring to FIG. 2, the upper spindle 6 is supported by a holder 10 fixed to a frame so as to be rotatable about its axis via a bearing 11, and an air supply path 12 is formed in the axis of the upper spindle 6. There is.

Reference numeral 13 designates an upper rim mounting plate, which is fixed to the lower end surface of the upper spindle 6 with a bolt 14, and has a downwardly tapered protrusion 15 at its center; A tapered fitting hole 15A is formed so that its axis coincides with that of the upper spindle 6.

Reference numeral 16 denotes an assembly workbench, which is provided below the tire conveyance means 2, and has a plurality of holding holes 17 vertically penetrating therethrough, and the holding holes 17 are tapered holes that expand upward.

A guide rail 18 is supported on a horizontal plane by a pedestal 19. An assembly workbench 16 is provided on this guide rail 18 so as to be movable in the horizontal direction, and is moved by the operation of a drive device 20 such as a cylinder.

Here, each holding hole 17 of the assembly workbench 16 is aligned with the axis of the upper spindle 6, so that the position can be changed freely.

In the illustrated example, the assembly workbench 16 is of a so-called cart type (sliding type), but the holding holes 17 are formed around a disk-shaped table having a center of rotation, such as an indexing table. It is also possible to use a type in which the holding holes 17 are opened in sections and move the plurality of holding holes 17 one after another onto the spindle axis by intermittent rotation of the table. Since it can be correctly set concentrically with the spindle, stopper means and movement stroke regulating means are not shown but may be appropriately provided as necessary.

21 is the lower spindle holder, inside this,
The lower spindle 7 is housed in a bearing 22 so as to be rotatable around the axis, and the holder 21 is inserted into the holding hole 17.
It has a fitting body part 21A that is fitted into the body, and
It has a flange 21B and is removably inserted into the holding hole 17, and has a fitting opening cylinder 23 on the lower surface that can receive the head of the elevating device 8, that is, the elevating member 8A in the fitted state.

Further, the lower spindle 7 has a tapered insertion projection 24 projecting upwardly on its axis, and the insertion projection 2
4 can be freely inserted into and removed from the tapered fitting hole 15A of the upper rim mounting plate 13 from below. Note that the tapered insertion protrusion 24 has an air hole 24A.

The lower rim 10 is detachably attached to the lower spindle 7 by bolts 25, and
It is fitted onto the lower spindle holder 21.

The upper rim 9 is mounted on an assembly workbench 16 as shown in FIG.
The lower spindle 7 and the lower rim 10 are assembled in advance together with the lower spindle 7 and the lower rim 10 at the top, so that the vertical facing height H between the tire conveyance means 2 and the assembly workbench 16 is reduced.
is set to be higher than the height of the assemblies 7, 9, and 10. The upper rim 9 is assembled by fitting the lower rim 10 with a spigot, and the spigot fitting part 26
An air passage hole 26A is formed in the lower rim 10 (see FIG. 5), and a tapered hole 9A is formed in the center of the upper rim 9, into which the protrusion 15 of the rim mounting plate 13 is fitted. There is.

A locking means 27 is provided at the lower end of the upper spindle 6, and the locking means 27 makes the upper rim 9 detachable.

The locking means 27 is a cylinder base 2 which is fitted onto the upper spindle 6 as shown in FIG.
8, and a cylinder 29 that is fitted onto the cylinder base 28 so as to be freely raised and lowered, and a pressurized air supply and discharge pipe 3.
Pressurized air from ports 30A, 31
By introducing it through A, the cylinder 29
is capable of rising and falling.

Further, a plurality of engaging portions 29A are formed on the outer periphery of the cylinder 29 at radial positions in a plan view, and a slide block 32 is fitted into the engaging portions 29A.

Further, a bracket 33 is provided upright on the upper rim mounting plate 13 in a radial arrangement in a plan view.
A center O ₂ is rotatably mounted on a shaft via an eccentric bearing rotating portion 34 at a center O ₁ and is eccentric to the center O _{1 .}
a lever 38 having one end connected to the eccentric shaft 35 with a key 36 and the other end connected to the slide block 32 via a pin shaft 37;
An engaging hook 39 having a boss fitted onto the outer periphery of the eccentric shaft 35 and a pin shaft 4 attached to the mounting bracket 33 are provided.
an unclamping lever that is rotatably supported via the lever 38, includes a guide roller 41 that can be engaged with the lever 38, and is also engageable with a pin 39a provided on a part of the engagement hook 39; 42, and an engaging hook 39 in the locking means 27.
The lower hook 39b of the upper rim 9 is removably engaged with the engagement groove 9B formed on the inner peripheral surface of the upper end of the upper rim 9, and the hook 39 is engaged between the boss of the engagement hook 39 and the mounting bracket 31. Spring 4 elastically supported on the groove 9B side
3 is provided.

In FIG. 3, reference numeral 44 indicates a circumferential groove provided in the head 8B of the elevating member 8A, and 45 indicates a ball that is engaged with and disengaged from the circumferential groove 44. 46 is an upper limit detection switch, and 47 is a lower limit detection switch.

In the embodiment described above, the mounting of the tire T, its upper rim 9 and lower rim 10, and the effect of tire uniformity will be explained.

As shown in FIG. 2, in the plurality of holding holes 17,
The lower spindle holder 21 is inserted and the lower spindle 7, lower rim 10 and upper rim 9 are assembled in advance.

In this case, as shown in FIG. 2, the upper rim 9 and the lower rim 10 are made in accordance with the size and shape of the tire T, and a plurality of sets are assembled and held in each holding hole 17 in advance.

In this assembled and held state, the upper rim 9, lower rim 10, and lower spindle 7 of the holding hole 17 located on the axis of the upper spindle 6 are moved by the lifting member 8A as the lifting device 8 rises while being assembled and held. Therefore, it is lifted beyond the tire conveyance means 2 (note that the tire conveyance means 2 has a passage hole for the rim assembly formed therein as in the conventional example).

Then, the upper rim 9 is pressed through alignment between the protrusion 15 of the upper rim mounting plate 13 and the tapered hole 9A of the upper rim 9, and the engagement hook 39 and the engagement groove 9B are pressed together.
The upper rim 9 is mounted on the upper spindle 6 by engagement with the upper rim 9 .

Thereafter, by lowering the lifting device 8, the lower rim 10 and the lower spindle 7 are lowered below the tire conveying means 2, with the upper rim 9 still attached to the upper spindle 6, as shown in FIG.
When the tire T is conveyed by the tire conveying means 2, as shown by the imaginary line in FIG.
When the lower rim 10 is inserted into and engaged with the lower bead portion _T1 of the tire T and lifted together with the tire T, the upper bead portion _T2 of the tire T is fitted into the upper rim 9 as shown in FIG. Here, the tire T is sandwiched between the upper rim 9 and the lower rim 10 from above and below.

In this clamped state, air is supplied from the air supply path to apply internal pressure to the tire T through the through holes 24A and 26A, and the uniformity of the tire T is tested by rotating the upper spindle 6, etc. Become.

Incidentally, during this test, rim assembly for a tire of a different size or the like may be performed using the holding hole 17 on the assembly workbench 16.

When the prescribed test is completed, the internal pressure of the tire is released, the rotation of the upper spindle 6 is stopped, and the lifting device 8 is lowered to lower the tire T and lower rim 10 with the upper rim 9 still attached. The tires are transported to the next line by the transport means 2, and tires of the same type are mounted again in the same manner as described above.

When changing the tire size, etc., the lower rim 10 and the lower spindle 7 are lifted up by the lifting device 8 and pressed against the upper rim 9 in an assembled state, and in this state, the locking means 27 is released.

The release of the locking means 27, that is, the removal of the upper rim 9, is performed as follows.

By moving the cylinder 29 downward,
The slide block 32 is also pushed downward. As a result, the lever 38 connected to the block 32 rotates counterclockwise, and the lever 38
8 and an eccentric shaft 35 connected by a key 36
rotates around the eccentric bearing rotation part 34, so the engagement hook 39, which is held on the eccentric shaft 35 via the boss, due to its centers O ₁ and O ₂ and the amount of eccentricity, is rotated around the eccentric shaft 35 as shown in FIG. As shown by the mating hook 39b, the lever 38 moves directly downward within the engagement groove 9B of the upper rim 9, causing play. At the same time, the lever 38 pushes the guide roller 41 downward, so that the unclamp lever 4
2 rotates clockwise around the pin shaft 40,
Along with this rotation, the lever 42 pulls up the pin 39a of the engagement hook 39 and rotates the same.
The hook 39b at position A in FIG.
It rotates as shown in B and C in the same figure, and finally completely disengages from the engagement groove 9B of the upper rim 9.
The upper rim 9 is unlocked by the hook 39,
As a result, the upper rim 9 is connected to its spigot fitting portion 2.
6 also becomes A', B', and C' in FIG. 6, and is free from the rim mounting plate 13 of the upper spindle 6, and has a spigot fitting part with the lower rim 10 on the lower spindle 7 side. Therefore, in order to fit and lock the upper rim 9 to the rim mounting plate 13 side, the cylinder 29 described above is raised from the lowered position to the raised position. This allows it to be done automatically under the reverse procedure.

When the upper rim 9 is removed from the rim mounting plate 13, the upper rim 9, the lower rim 10, and the lower spindle 7 are lowered while being assembled and held, and are fitted and held in the empty holding hole 17, and the head is removed. 8B is removed downward against the ball 45, the assembly workbench 16 is moved horizontally, and the next rim or the like corresponding to a tire of a different size or the like is aligned with the mounting center.

(Effects of the Invention) The present invention is as described above, and according to its first feature, the upper rim, the lower rim, and the lower spindle are assembled and held on an assembly workbench below the tire conveying means, After the upper rim is attached to the upper spindle by raising the member, the lower spindle and lower rim are lowered, and the tire brought in is lifted together with the lower spindle and lower rim, and the tire is attached to the upper rim and lower rim. Since the rims are held in place, the rim installation work can be automated without manual intervention, and while the tire is being installed and tested, the rim assembly corresponding to a different size tire can be installed in the holding hole of the assembly workbench. It can also be assembled and maintained, which allows
The rim mounting work can be performed more quickly, accurately and easily than in the conventional example in which tires of different sizes are lifted onto the tire conveying means using an upper rim, jacks, etc.

According to a second feature of the present invention, an assembly workbench is provided below the tire conveying means, and a plurality of holding holes are provided in the assembly workbench, and the holding holes allow the lower rim, the lower spindle, and the upper Since the rim is assembled and held, there is less risk of the rim assembly collapsing even when the rim assembly according to the tire size is fitted and matched by moving the assembly workbench. Can be done with high precision.

Since the present invention has the above advantages, it is of great benefit as a device for mounting a rim on a tire uniformity machine.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the entire tire uniformity machine, and FIGS.
The figure shows the installation procedure. Figure 2 is an elevational sectional view of the main part before installation, Figure 3 is an elevational view of the main part when the upper rim is installed, and Figure 4 is the installation completed and under test. Fig. 5 is an elevational sectional view of the locking means;
FIG. 6 is an explanatory diagram showing its operation. 2... Tire conveyance means, 6... Upper spindle, 7... Lower spindle, 8... Lifting device, 9
... Upper rim, 10 ... Lower rim, 16 ... Assembly workbench, 17 ... Holding hole, 27 ... Locking means.

Claims (1)

[Claims] 1. A tire conveying means ₂ comprising an upper rim 9 on the upper spindle 6 side and a lower rim 10 on the lower spindle 7 side, which are fitted into the bead portions T ₁ and T 2 of the tire T.
A tire uniformity machine in which a tire T lifted from above is sandwiched from above and below by an upper rim 9 and a lower rim 10, and the tire T is rotated around its axis by rotation of an upper spindle 6 around its axis. In the method of attaching a rim to a tire, in the holding hole 17 of the assembly workbench 16 which has a plurality of holding holes 17 provided below the tire conveying means 2,
The upper rim 9, the lower rim 10, and the lower spindle 7 according to the size of the tire T are assembled and held in advance before mounting the tire, and the holding hole 17 of the assembly workbench 16 is inserted on the extension of the axis of the upper spindle 6. Elevating member 8 that penetrates and moves up and down
By A, the upper rim 9, the lower rim 10, and the lower spindle 7, which were assembled and held, were raised in the assembled state, and the upper rim 9 was attached to the upper spindle 6, and then the upper rim 9 was attached to the upper spindle 6. Both the lower rim 10 and the lower spindle 7 are lowered below the tire conveying means 2 by lowering the elevating member 8A, and then the lower rim 10 is fitted into one bead portion _T1 of the tire T on the tire conveying means 2. Then, the tire T is lifted by raising the elevating member 8A together with the lower spindle 7, and the other bead part _T2 is fitted into the upper rim 9 from below to sandwich the tire T between the upper rim 9 and the lower rim 10 from above and below. A method for installing a rim for a tire uniformity machine, which is characterized by: 2 The tire conveying means 2 includes an upper rim 9 on the upper spindle 6 side and a lower rim 10 on the lower spindle ₇ side that are fitted into the bead portions T ₁ and T 2 of the tire T.
A tire uniformity machine in which a tire T lifted from above is sandwiched from above and below by an upper rim 9 and a lower rim 10, and the tire T is rotated around its axis by rotation of an upper spindle 6 around its axis. , a plurality of holding holes 1 are provided below the tire conveying means 2.
7, an assembly workbench 16 with an upper spindle 6
Each holding hole 17 is movably provided so as to be selected and coincident with the axial extension line of An assembly workbench 16 is provided below the tire conveying means 2 and has an upper and lower facing height H greater than or equal to
An elevating member 8A that vertically passes through the holding hole 17 and moves up and down is provided on the axial extension of the upper rim 9, and a lock that allows the upper rim 9 to be detachably fixed to the upper spindle 6 is provided on the lower end side of the upper spindle 6. A rim mounting device for a tire uniformity machine, characterized in that a means 27 is provided.