JPH0798443B2 - Tire fitting processing equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting processing apparatus for a tire assembly in which a tire is mounted on a road wheel.

Conventional technology A tire assembly made by assembling a tire on a road wheel and filling it with air is measured for the amount of unbalance with a wheel balancer, and after adding a balance weight commensurate with the amount of unbalance, it is first attached to the vehicle. It is installed. In this case, it is virtually impossible to set the above-mentioned unbalance amount to zero even if a balance weight is added, and generally any tire assembly has a slight residual unbalance amount. There is.

When this residual unbalance amount becomes a problem, so-called familiarity at the fitting portion between the road wheel and the tire has a great meaning. That is, if the road wheel and the tire are not sufficiently adapted, the road wheel and the tire move relative to each other while the vehicle is running, causing a phase shift, which causes the initial balance to be lost and the residual unbalance amount to increase. However, this results in increased vibration of the vehicle.

From this, it is necessary to improve the familiarity between the road wheel and the tire, that is, the fitting property, before the measurement of the unbalance amount, and as a means for that, for example, it is disclosed in Japanese Utility Model Laid-Open No. 59-114303. There is something. As shown in FIG. 5, the tire assembly 41 supported by the shaft 40 is sandwiched between a pair of rollers 43 supported by a cylinder 42, and the rollers 43 press the tire assembly 41. However, the roller 43 is caused to swing in the direction of arrow A by the action of the rack 44 and the pinion 45.

Problems to be Solved by the Invention According to such a structure, the tire assembly 41 is attached to the shaft 40.
Since it is necessary to fix the tire assembly 41 to the shaft 40, centering of the tire assembly 41 with respect to the shaft 40 and phase matching in the rotational direction are required, and particularly in a mass production line, the cycle time for the fitting process becomes long. Moreover,
In addition to the radial load, the tire assembly 41
Since the load itself from an oblique direction acts due to the swinging of itself, the hub hole on the side of the road wheel 47 into which the mounting bolt 46 is inserted may be deformed by this, and product quality may be deteriorated.

The present invention provides a fitting processing apparatus that does not require centering or phase matching of a tire assembly, especially in a mass production line, and that does not cause deformation of a hub hole.

Means for Solving the Problems The processing apparatus of the present invention, as shown in the embodiments, a table that rotatably supports the tire assembly in a horizontal position with the side portion of the tire assembly as a support surface, Driving roller means for rotating the tire assembly by contacting the ground contact surface of the tire assembly and rotationally driving the shaft parallel to the axis of the tire assembly as a rotation center, and a driving roller sandwiching the tire assembly. A pressure cylinder whose axial center is aligned with the radial direction of the tire assembly at a position opposed to the means, and is attached to the tip of the pressure cylinder such that the axial center is parallel to the axial center of the drive roller means. A first pressure roller means for pressing the tire assembly against the driving roller means in accordance with the extension operation of the pressure cylinder, and a sidewall portion of the tire assembly from above to contact the tire assembly with the table. It is composed of a second pressure roller means for applying pressure.

According to this structure, the tire assembly is simply placed on the table and then the first pressure roller means is moved forward by the action of the cylinder, whereby the tire assembly is made to function as the drive roller means and the first pressure roller means. It is sandwiched between and restrained under pressure.

Then, when the driving roller means is rotated, the tire assembly is also rotated synchronously, and the fitting process is uniformly applied to the entire circumference of the tire assembly.

In this case, it is desirable to reduce the initial load of the first pressure roller means by the cylinder and increase the pressure after the rotation of the tire assembly is stabilized.

In addition, pressure is applied from the side wall portion of the tire by the table and the second pressure roller means, so that the tire assembly pressed by the first pressure roller means is prevented from rising and the tire assembly is The fitting property can be improved.

Embodiment FIG. 1 to FIG. 3 are configuration explanatory views showing a more specific embodiment of the present invention.

In the figure, 1 is a frame, 2 is a table on which the tire assembly 3 is placed, and a large number of tables on the table 2 permitting the tire assembly 3 to move in any direction in a horizontal plane. The roller units 4, 4, ... Are arranged. These roller units 4, 4, ... Are generally commercially available. For example, as shown in FIGS. 4 (A) and 4 (B), two assemblies 7 and 7 in which three rollers 6 are arranged on a frame 5 are provided. One set is arranged coaxially, and each assembly 7 can rotate independently, and each roller 6 can also rotate freely.

8 and 8 are a pair of drive rollers (drive roller means) provided on the side of the table 2 so as to be parallel to the axis of the tire assembly 3, and 9 and 9 are drive rollers sandwiching the tire assembly 3. 8,8
And a pair of pressure rollers (first pressure roller means) provided at positions facing each other. Drive rollers 8,8 are bearings 10
It is formed coaxially with the rotating shaft 11 supported by the drive roller 8 and is driven by a drive unit 14 including a motor 12 and a speed reducer 13 via a chain 15 to rotate. On the other hand, the pressure rollers 9, 9 are rotatably supported by a slider 18 via a bearing 16 and a support member 17. The slider 18 is connected to an output rod 20 of a pressurizing cylinder 19 whose axial center is aligned with the diametrical direction of the tire assembly 3. Therefore, the action of the pressurizing cylinder 19 causes the slider 18 to follow the linear guide 21. Can move forward and backward.

Reference numeral 22 denotes an upper pressure roller (second pressure roller means) obliquely provided right above the table 2, and the upper pressure roller 22 is rotatably supported by a support 23 capable of moving up and down. The support body 23 is connected to the output rod 25 of the lifting cylinder 24, and is guided by the guide sleeve 26 and the guide rod 27 to move up and down.

Here, assuming that the tire assembly 3 is sent in the direction of arrow B from the previous step on the transport axis C by the roller conveyor 28 or the like, 29 in FIG. 3 indicates that the tire assembly 3 is stopped on the table 2. The stopper 30 for pushing is a delivery arm for delivering the tire assembly 3 after the fitting process to the next step. The stopper 29 moves up and down by the action of a cylinder (not shown), and the delivery arm 30 also reciprocates by the action of a cylinder (not shown). Reference numeral 31 is a pusher for pushing the tire assembly 3 toward the pressure roller 9 prior to sending the tire assembly 3 to the next step, as will be described later.

In the structure as described above, the tire assembly 3 sent from the direction of the arrow B on the transport axis C contacts the stopper 29 waiting at the position indicated by the solid line in FIG. 3 and stops on the table 2. As a result, the tire assembly 3 is supported by the plurality of roller units 4, 4, ... Using the side portion (sidewall portion of the tire alone) as a supporting surface. Then
By the action of the pressure cylinder 19, the pressure rollers 9, 9 advance together with the slider 18 to the imaginary line position P in FIG. 1, and the tire assembly 3 is pressed against the drive rollers 8, 8. As a result, the tire assembly 3 is sandwiched between the driving rollers 8 and 8 and the pressure rollers 9 and 9 and is pressed and restrained. Further, due to the action of the cylinder 24, the upper pressure roller 22 is lowered to press the tire assembly 3 against the table 2.

Then, when the motor 12 is started, the drive rollers 8, 8 rotate, and the tire assembly 3 is driven by the frictional force of the drive rollers 8, 8.
It rotates on the roller units 4, 4 in synchronization with 8. Since a predetermined pressure is applied by the pressure cylinder 19 during the rotation of the tire assembly 3, the road wheel and the tire are fitted by this.

At this time, the upper pressure roller 22 prevents the rotating tire assembly 3 from rising, and at the same time, pressurizes the sidewall portion of the tire from an oblique direction, which greatly contributes to the improvement of fitting property particularly at the tire bead portion. . Moreover, since the road wheel and the tire are positioned on the table 2, there is no deviation in relative posture between them, and accurate fitting can be obtained.

Further, since the pressure applied from the outer peripheral side of the pressure roller 9 and the pressure applied from the upper pressure roller 22 and the side wall portion of the table 2 are combined, the pressure applied to the pressure roller 9 becomes excessive. Fitting can be performed without performing the above, and by adjusting the pressure applied to both, it can be applied to many types of tire assemblies 3, and a fitting operation according to the type of tire assembly 3 can be selected.

Further, it is possible to easily deal with the tire assemblies 3 having different tire width sizes by changing the distance between the upper pressure roller 22 and the table 3.

Further, if the pressure applied by the pressurizing cylinder 19 is set low until the rotation of the tire assembly 3 is stabilized and the pressure is increased after the rotation is stabilized, the effect is further enhanced.

When the fitting process is completed, the pressure rollers 9, 9 and 22 are returned to their initial positions. At this time, the position of the tire assembly 3 after processing and the position at the time of loading are offset by e in FIG. So pusher
31 extends and the center O of the tire assembly 3 moves to the transport axis C.
Push out the tire assembly 3 until it matches the top. And
The delivery arm 30 extends, the treated tire assembly 3 is delivered to the next step, and one cycle is completed. The above device can also be applied to the tire assembly 53 having a small diameter.

As described above, in the processing apparatus of the present invention, since the tire assembly placed on the table is sandwiched between the driving roller and the pressure roller and rotated while being pressed and restrained, the tire assembly is processed. Since centering and phase matching of the tire assembly are not required unlike the conventional case, the cycle time can be shortened. Moreover, since the side portion of the tire assembly is received by the table as a supporting surface, excessive stress does not act on the road wheel, deformation of the hub hole or the like can be prevented, and quality can be improved. Further, by having the second pressure roller means that comes into contact with the sidewall portion of the tire assembly from above and presses the tire assembly against the table, the first pressure roller means applies pressure. It is possible to prevent the raised tire assembly from rising, and the air pressure in the tire effectively acts on the tire bead portion to improve the fitting property with the road wheel.

Moreover, since the road wheel and the tire are positioned on the table, there is no deviation in relative posture between them, and accurate fitting can be obtained.

Further, since the pressure applied from the outer peripheral side by the first pressure roller means and the pressure applied by the second pressure roller means and the side wall portion on the table are combined, the pressure applied by the first pressure roller means is increased. Fitting can be performed without excessive pressure, and by adjusting the pressure applied to both, it can be applied to many types of tire assemblies, and the fitting work can be selected according to the type of tire assembly.

Then, even a tire assembly having different tire width sizes can be easily dealt with by changing the distance between the second pressure roller means and the table.

[Brief description of drawings]

FIG. 1 is an explanatory plan view showing an embodiment of the processing apparatus of the present invention, FIG. 2 is an explanatory front view of the apparatus, FIG. 3 is an explanatory left side view of FIG. 2, and FIG. FIG. 4 (B) is a side view of one assembly shown in FIG. 4 (A), and FIG. 5 is a schematic explanatory view of a conventional pressing device. 2 ... table, 3 ... tire assembly, 4 ... roller unit, 8,8 ... driving roller (driving roller means),
9, 9 ... Pressure roller (first pressure roller means), 12 ...
Motor, 18 …… Slider, 19 …… Pressurizing cylinder, 22 ……
Upper pressure roller (second pressure roller means).

Front page continuation (72) Inventor Shigeo Yamamoto 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Shogo Matsui 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) Reference Reference JP-A-56-28006 (JP, A) Actually developed Shou 59-102411 (JP, U)

Claims (1)

[Claims] 1. A table for rotatably supporting the tire assembly in a horizontal posture with a side portion of the tire assembly as a support surface, and a ground surface of the tire assembly in contact with each other to bring an axis of the tire assembly into contact. Drive roller means for rotating the tire assembly by rotationally driving the shaft parallel to the drive roller means, and a position facing the drive roller means with the tire assembly sandwiched between them, with the axis in the radial direction of the tire assembly. A pressure cylinder arranged in parallel with the pressure cylinder is attached to the tip of the pressure cylinder such that its axis is parallel to the axis of the drive roller means. And a second pressure roller means for contacting the sidewall portion of the tire assembly from above and pressing the tire assembly against the table. Fitting processing apparatus of the tire to be.