JPH0777841B2 - Tire phasing device - Google Patents

Description

The present invention relates to a rotation direction of a tire before being gripped by a tire hand when gripping a wheeled tire integrally combined with a wheel with a tire hand and mounting it on a wheel hub on the vehicle body side. The present invention relates to a phase matching device that matches a position with a rotational direction position required on the tire hand side.

There is already known a part of a device which automatically and consistently carries out a tire mounting work which has been conventionally performed only by hand from the positioning of the tire to the tightening of bolts instead of the hand (for example, Japanese Patent Laid-Open Publication No. Sho. 54-18502).

In this type of device, a machine hand is arranged on the line side of a vehicle body transport line, a tire delivered by a predetermined transport means is once received by a tire delivery device, and the tire is gripped by the machine hand. By advancing the machine hand with respect to the wheel hub on the vehicle body side, the tire is mounted and the nuts are tightened. Prior to performing these operations, the so-called phase matching is performed in which the rotation phase of the bolt hole of the tire side wheel is matched with the phase of the hub bolt on the wheel hub side in advance and then the tire is held by the machine hand. There is a need.

However, in the device disclosed in Japanese Patent Laid-Open No. 54-18502, the tire handing device alone cannot perform the tire phase adjustment, and the bolt hole phase regulating mechanism provided separately from the tire handing device is advanced from the outside. For the first time, the tire phase matching is performed by the cooperation of the two after facing the tire passing device, and therefore the occupied space of the tire phase matching device including the operation space of the bolt hole phase regulation mechanism is large, There is a problem that the whole becomes large, which is disadvantageous in terms of layout and space.

Further, as a more specific tire position regulating device used for the tire mounting work as described above, there is one disclosed in JP-A-56-67604. This device uses a tapered center guide that advances from the front side of the wheel to center a tire that is supported upright on a tire receiver, and then rotates a pin with a sensor that is arranged around the center guide. When the pin engages with any of the bolt holes, the rotation of the pin is stopped to position the tire.

However, according to this structure, since the center guide, the pin, and the mechanism for driving them are arranged on the front side of the wheel, the positioned tire is gripped by the tire hand that also advances from the front side of the tire. If this is attempted, the tire hand will interfere with the center guide or the like. In order to prevent this interference, the center guide or the like, which should serve as a tire positioning reference when the tire positioning is completed, is retracted from the front surface of the tire in the radial direction of the tire in the same manner as in JP-A-54-18502. There is a need. This retracting operation means that when gripping the positioned tire with the tire hand, the center guide or pin that had been positioning the tire until then has already come off the road wheel. Positioning accuracy decreases due to misalignment, etc., making it impossible to realize highly reliable automatic tire mounting.

In particular, with the above structure, when positioning a tire with a small diameter, the tire itself floats up from the receiving surface of the tire receiver, so if the center guide etc. retracts, the only thing that restrains the tire is the tire pressing plate. Therefore, there is a high possibility that the tire will be displaced.

Further, according to the structure of JP-A-56-67604, since the tire and the pin are relatively rotated about the center guide while the pin is pressed against the wheel, friction force between the wheel and the pin is generated. The wheel may be scratched.

The present invention has been made in view of the above problems,
It is an object of the present invention to provide a tire phasing device which occupies a small space and can perform phasing of a plurality of types of tires with high accuracy regardless of the tire size diameter.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In Figures 1 and 2, 22 is the base and 23 is the base
A main body portion provided on 22 and provided with a vertical substrate 43, and 18 is a shooter located above the main body portion 23 for inserting the tire W into the main body portion 23 side. A large number of ball casters 211 for smooth loading of the tire W and rotation of the tire W to be described later are attached to the substrate 43, and the tangent plane shared by the balls of each ball caster 211 serves as a vertical tire regulation surface. Function. Here, the large number of ball casters 211 are arranged in several rows at a predetermined pitch so as to contact the highest portion of the sidewall portion even when the size of the tire W is changed.

Reference numeral 24 is a lifter that is guided by the guide rod 26 by the action of the air cylinder 25 to move up and down between the solid line position in FIG. 2 and the ideal line position directly below the shooter 18. The lifter 24 is a roller for receiving the tire W. 212 is installed.

Further, 27 is a tire pedestal provided so that the lifter 24 can be lifted up and down so as not to interfere with the lifter 24, and this tire pedestal 27 gives a vehicle type signal from the outside to a motor 28 which is its drive source. As a result, the roller 30 is moved up and down to a position commensurate with the tire size diameter of the vehicle type, and the tire receiving surface is provided with a roller 30 which is rotationally driven by a motor 29 via a belt or the like. The height position of the tire pedestal 27 is confirmed and detected by the multiple photoelectric switch group 31 provided on the side of the tire pedestal 27. That is, the lifter
As 24 rises to the lower part of the shooter 18, the shutter 19 under the shooter 18 temporarily retracts, whereby the tire W standing by in the upright state inside the shooter 18 is transferred to the lifter 24. Further, the lifter 24 is lowered again to the lower limit position so that the tire W can be transferred to the tire pedestal 27.

32 is installed above the tire pedestal 27, and the air cylinder 33
With a slider that slides horizontally by the operation of
In addition to the two locate pins 34 and the light receiver 35B of the photoelectric switch 35 which is a detector, the slider 32 has a slider 3
A tire centering center 36 is provided which is relatively movable with respect to 2. That is, the locate pin 34 and the light receiver 35B arranged around the center 36 are located on the pitch circle of the four bolt holes 9 on the wheel R side,
Further, the arrangement pitch of the locate pins 34 and the light receivers 35B is set so as to match the pitch of the bolt holes 9. The center 36 is moved forward and backward with respect to the slider 32 by the operation of the air cylinder 213, and the forward limit and backward limit positions of the center 36 and the slider 32 are detected by the limit switches 214 to 217, respectively. It has become.

Reference numeral 37 denotes a swing arm which can be swung around a hinge pin 39 as a center of rotation by the operation of an air cylinder 38, and a projector 35A of a photoelectric switch 35 corresponding to the light receiver 35B is attached to the tip of the swing arm 37. Swing arm 3
Only when the light receiving device 35B and the light projecting device 35A face each other by turning 7 is made to function as a photoelectric switch. Reference numeral 40 denotes a pair of tire positioning arms which are provided on both sides of the tire W on the tire receiving stand 27 so as to face each other (however, in FIG. This drawing arm 40 is slid by the operation of the air cylinder 41 and is rotated by the operation of the rotary cylinder 44, and is provided with a guide roller 42 at the tip thereof.

In the phase adjusting device configured as described above, the third
As shown in the timing chart of the figure, when the lifter 24 rises and receives the tire W from the shooter 18, the lifter 24
Will descend again. And the tire W is a ball caster
The tire cradle is gradually lowered while being guided by 211, and the tire W stands by at a position corresponding to the tire size diameter in advance.
Moved up to 27. When the tire W is transferred to the tire pedestal 27, the positioning arm 40 moves to the right in FIG. 1 to restrain the tire W, and the side wall portion thereof is pressed against the substrate 43 side for positioning. As a result, the tire W is constrained to have a vertical posture.

Then, the slider 32 is advanced from the back side of the tire W by the operation of the air cylinder 33. This forward movement is temporarily stopped at an intermediate position of the total stroke of the air cylinder 33, and instead, the air cylinder 213 is actuated to move the center 36
Moves independently, and the center 36 is the center hole of the wheel R.
Fit in 218 and perform centering. At this time, the tire W is centered by the center 36 so that the tire support 27
Since it slightly floats up from the roller 30, the tire pedestal 27 rises slightly so as to follow it, and the tire W and the roller 30 come into pressure contact with each other again. The raising operation at this time is performed by the air cylinder 200.

After that, the roller 30 is rotationally driven by the motor 29, so that the tire W rotates about the center 36, and during the rotation, it passes between any one of the bolt holes 9 and between the emitter / receiver 35A and 35B of the photoelectric switch 35. The rotation of the roller 30 immediately stops when the optical axis of the roller is connected. As a result, the four bolt holes 9 are indexed.
When the rotation of 30 is stopped and the slider 32 is moved forward by the operation of the air cylinder 33, the locate pin 34 is fitted into the bolt hole 9 of the wheel R, and the tire W is positioned in the rotational direction. Is completed.

When the locate pin 34 is inserted into the bolt hole 9 as described above, the center 36 is retracted by the operation of the air cylinder 213, and the tire pedestal 27 is slightly lowered by the operation of the air cylinder 200. Is supported only by the locate pin 34, and the positioning state is still maintained.

Furthermore, the swing arm 37 is activated by the operation of the air cylinder 38.
Turns to the imaginary line position in FIG. 2 and retreats, and when this retreating operation ends, the hand unit 55 including the nut runner 73 and the tire hand 74 for gripping the tire W as shown in FIG. As the tire W moves forward from the front side, the tire hand 74 grips three locations on the circumference of the tire W as shown in FIG.

When the tire hand 74 grips the tire W, the locating pin
The positioning arm 40 retreats from the front of the tire W as the positioning arm 40 moves leftward in FIG. Then, the tire W gripped by the tire hand 74 is handled by the backward movement of the hand unit 55, while the positioning arm 40, the swing arm 37, and the tire pedestal 27 are returned to their initial states, thereby completing one cycle. .

Then, the tire W gripped by the tire hand 74 is mounted by tightening the nut with the nut runner 73 after inserting the bolt hole 9 into the hub bolt of the counterpart wheel hub.

In addition, when tires of different sizes are loaded, the same operation as above is performed only by changing the height of the tire pedestal 27 according to the tire size information. However, it is assumed that the number of bolt holes 9 and the pitch circle diameter are uniform even if the tire sizes are different.

As apparent from the above description, according to the present invention, the center and the locating pin are fitted from the rear side of the road wheel. Therefore, when gripping the phase-matched tire with the tire hand, the tire hand Does not interfere with the center, etc. As a result, it is not necessary to retract the center etc. in the tire diameter direction each time when gripping the tire with the tire hand as in the conventional case, and the space occupied by the phase matching device is reduced due to the reduction of the retracted space. There are no restrictions on the layout of the device.

Further, since it is not necessary to retract the center and the like in the tire diameter direction as described above, in addition to the fact that the tire can be restrained by the positioning arm until the tire is gripped by the tire hand, the phase adjustment is also possible. The locating pin that serves as the reference of can be fitted to the road wheel side until the tire is securely gripped by the tire hand. Therefore, since the tire is in the positioning state by the positioning arm and the locate pin until it is gripped by the tire hand, there is no risk of the tire being displaced as in the conventional case, and highly accurate phase alignment regardless of the tire size. In particular, there is an effect that problems caused by poor phase alignment can be prevented when the tire is actually mounted on the wheel hand on the vehicle body side. Furthermore, the locating pin moves forward and is inserted into the bolt hole only when it matches the position of the bolt hole on the wheel side, so that both rotate relative to each other while the locate pin is pressed against the wheel as in the past. There is no danger of scratching the wheel.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing an embodiment of the present invention, FIG. 2 is a left side explanatory view of FIG. 1, and FIG. 3 is a timing chart for explaining the operation of the apparatus of FIG. 9 ... Bolt hole, 23 ... Main body, 24 ... Lifter, 27 ...
… Tire support, 30 …… roller, 32 …… slider, 34
...... Locate pin, 35 ...... Photoelectric switch as detector, 36 ...... Center, 37 ...... Swing arm, 40 ...... Positioning arm, 43 ...... Board, 211 ...... Ball caster, 74 ...... Tire hand, 218 ... … Center hole, R ……
Wheels, W ... tires.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoji Yamanaka 6-17-1, Ginza, Chuo-ku, Tokyo Nissan Motor Co., Ltd. (56) References JP-A-53-63677 (JP, A) JP-A-SHO 54-18502 (JP, A) JP 59-176102 (JP, A) JP 63-39441 (JP, B2)

Claims (1)

[Claims] 1. When gripping a tire with a wheel integrally connected to a wheel with a tire hand and mounting it on a wheel hub on the vehicle body side, the rotational direction position of the tire before being gripped by the tire hand is measured on the tire hand side. In a phasing device for preliminarily aligning with a required rotational direction position, a main body having a vertical tire regulating surface that abuts against a sidewall portion of a tire, and a main body that is provided so as to be able to move forward and backward in a horizontal direction, The tire is supported on the base and moves forward from the rear side to fit in the center hole of the wheel to center the tire, and the main body is vertically movable to regulate the tire before centering the tire. Position the tire in a position where the axial center of the tire and the axial center of the center that are subject to phasing in close cooperation with the surface The tire pedestal, the rollers that are provided on the tire pedestal, and that rotate the tire centered by the center with the center as the center of rotation, and the body that are provided on the main body before the centering of the tire by the center. A lifter that transfers the loaded tire to the tire pedestal in an upright position, and a tire provided on the main body that presses the tire on the tire pedestal against the tire regulation surface prior to the rolling operation of the tire by the roller. Positioning arm that restrains until it is gripped by the tire hand and a plurality of bolt holes on the wheel side around the center are arranged on the pitch circle, and the light that passes through one of the bolt holes is rotated while the tire is rotated by the roller. A bolt hole light transmission type and non-contact type detection that outputs a signal to stop the rotation of the tire immediately when it is detected Similarly, around the center, it is provided so as to be able to move forward and backward on the pitch circle of the bolt holes on the wheel side, and when any one of the bolt holes is detected by the detector, it moves forward from the rear side of the tire and the detector A tire having a locating pin that fits into a bolt hole other than the bolt hole detected in step 1 to determine the rotational position of the tire, and that retreats from the bolt hole after the tire is gripped by the tire hand. Phase matching device.