JPS643628Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a wheel positioning device that is incorporated into an automatic wheel assembly machine that automatically attaches wheels to the hub of an automobile, with the bolt hole of the wheel disc positioned at a predetermined position. It is designed to hold wheels.

In the past, wheels were attached to hubs on automobile assembly lines by hand. In other words, the hub bolts of the hub were manually inserted into the bolt holes drilled in the wheel disc of the wheel, and the nuts were tightened onto the hub bolts that passed through the bolt holes.

In recent years, automatic wheel assembling machines have been developed that automatically mount wheels in place of manual labor, leading to unmanned car repossession lines. The present invention is a wheel positioning device for such an automatic wheel assembly machine, which
Its purpose is to hold the wheel with the bolt hole in the wheel disc positioned in a predetermined position. The configuration of the present invention that achieves this purpose is such that a wheel is supplied from above by a tire shooter to hold the wheel in an upright state, and
This is a tire positioning device that rotates a held wheel to position a bolt hole drilled in a wheel disc at a predetermined position. The provided pedestal roller and the receiving cylinder move the wheel from below to above the pedestal roller and move up and down along the guide.After receiving the wheel in an upright position at the upper position, the wheel is lowered and the wheel is moved to the above-mentioned pedestal roller. It has a receiving roller placed on top and a holding roller that rolls the wheel placed on the pedestal roller into contact with it from the side, and the holding roller pushes the wheel and holds it in an upright position between it and the guide. A shifting arm, a center pin that fits into a center hole formed in a wheel disc of a wheel mounted on a pedestal roller and held by the lateral shifting arm, and a center pin that fits into a center hole formed in a wheel disk of a wheel placed on a pedestal roller and held by the pedestal roller; A pedestal elevating means that is brought into pressure contact with the tire; a roller rotation motor that rotates the wheel by rotating a pedestal roller that is pressed by a width-shifting arm and that is in pressure contact with a wheel into which a center pin is fitted; and a rotating wheel. An optical sensor is installed at a position facing a bolt hole drilled in a wheel disk of the wheel, and stops driving the roller rotation motor when the bolt hole is detected, and the roller rotation motor is stopped with the bolt hole facing the optical sensor. The vehicle is characterized by having a locating pin that fits into another bolt hole of the wheel.

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

First, based on FIG. 1, an automatic wheel assembly machine incorporating a wheel positioning device to which the present invention is applied will be outlined. As shown in the figure, the assembly vehicle 1 is carried on a cart on a conveyor. On the other hand, the wheels 3 are supplied by a tire shooter 4 and held in an upright position by a wheel positioning device 5 according to this embodiment. Further, the nuts are supplied from the nut supply device 6 to the nut delivery device 7. At this time hub 8
The position of the hub bolt 8a and the wheel positioning device 5
The phase is matched with the position of the bolt hole of the wheel 3 which is held in place. The wheel mounting device 9 receives the nut from the nut delivery device 7 and the wheel 3 from the wheel positioning device 5, then aligns the wheel 3 with the hub 8, tightens the nut, and performs assembly work.

Next, the wheel positioning device 4 according to the embodiment of the present invention
will be explained in detail based on FIG. As shown in the figure, a frame 10 of the apparatus is provided with a pedestal 11b that rotatably supports a pair of pedestal rollers 11a so as to be slightly movable in the vertical direction. Further, the pedestal 11b is moved up and down in the vertical direction by a cylinder 11c, and the pedestal roller 11a
is rotated by a roller rotation motor 11d. A pair of receiving rollers 12b are rotatably supported at the upper end of the receiving cylinder 12a, and the receiving rollers 12b are located between the receiving rollers 11a. Then, the receiving roller 12b is driven by the receiving cylinder 12a.
It moves up and down from below to above the pedestal roller 11a, and during this up and down movement, it passes between the pair of pedestal rollers 11a. The guide 13 is the receiving roller 12b
along the path of vertical movement. The two width adjusting arms 14a each have a presser roller 14b, and are moved back and forth in the left-right direction in the figure by a cylinder 14c, and are further moved by a rotary cylinder 14d.
It is now being rotated by Center pin 1
5a moves back and forth in the left-right direction in the figure by the cylinder 15b. Further, a positioning member 16b provided with two locating pins 16a is moved back and forth in the left-right direction in the figure by a cylinder 16c. In this case, the center pin 15a and the positioning member 16b move independently. The rotating arm 17 is equipped with an optical sensor 18a, and this optical sensor 18a
The optical sensor 18b that cooperates with the positioning member 16b
It is prepared for. Furthermore, this device has an optical sensor 19.
is provided. In Fig. 2, 3 is the wheel, 3a is the wheel disc, 3b is the bolt hole,
3c is a tire, 3d is a center hole, 4 is a tire shutter, and 4a is its shutter.

Next, the operation of this embodiment will be explained.

(1) Close the shutter 4a of the tire shooter 4.

(2) Center pin 15a and locate pin 16a
is moved back to the right in the figure.

(3) Move the width adjusting arm 14a forward to the left in the figure, and raise the receiving roller 12b to position it near the shutter 4a.

(4) Since the diameter of the wheels 3 differs depending on the vehicle model, adjust the position of the pedestal roller 11a using the cylinder 11c according to the wheel to be installed.

(5) The preparation system is completed through (1) to (4) above.

(6) Open the shutter 4a and place the wheel 3 on the rising receiving roller 12b.

(7) The optical sensor 19 detects that the wheel 3 is placed on the receiving roller 12b, and the receiving cylinder 12a is lowered based on this detection signal. Therefore, the wheel 3 placed on the receiving roller 12b descends in an upright position.

(8) Since the receiving roller 12b descends lower than the pedestal roller 11a, the wheels 3 are lower than the pedestal roller 11a.
It will be transferred to a.

(9) While keeping the wheel 3 in a rotating state by rotating the pedestal roller 11a with the roller rotation motor 11d, the width shifting arm 14a is retreated to the right in the figure. For this reason, the presser roller 14b
presses the wheel 3 while contacting the side surface of the wheel 3. Therefore, the wheel 3 is held between the presser roller 14b and the guide 13.

(10) Center pin 15a by cylinder 15b
into the center hole 3d of the wheel disc 3a. As a result, the wheel 3 is centered.

(11) By pushing the pedestal 11b upward with the cylinder 11c, the pedestal roller 11a is pressed against the tire 3c.

(12) In this pressure contact state, the roller rotation motor 11d
The pedestal roller 11a is rotated. Then, even if the air pressure of the tire 3c is different,
The wheels 3 rotate without slipping.

(13) The photoelectric switches 18a and 18b are installed at positions facing the bolt holes 3b of the rotating wheel 3. And this photoelectric switch 18a,
When the bolt hole 3b is detected by the bolt hole 3b, the rotation of the roller rotation motor 11d is stopped by this detection signal, and the wheel 3 is stopped. Therefore, one of the bolt holes 3b formed in the wheel disc 3a of the wheel 3 that is stopped and the optical sensor 18a, 18
b faces each other.

(14) Positioning member 16b by cylinder 16c
moves forward to the left in the figure, and the two locate pins 16
a fits into the two bolt holes 3b, and the position of the wheel 3 is determined with high precision.

(15) After positioning the wheel 3, further positioning member 16
b and push it forward until the wheel 3 comes to the left end of the pedestal roller 4. In this case, the width shifting arm 14a
moves to the left in the figure while being pushed by the wheel 3 with its presser roller 14b in close contact with the side surface of the wheel 3. Moreover, since the center pin 15a remains in the same position, it is removed from the center hole 3d as the wheel shifts to the left. Of course, the position of the wheel 3 located at the left end of the pedestal roller 4 is precisely determined at a predetermined position by the locating pin 16a.

(16) Thereafter, the wheel 3 is gripped by the wheel attachment device 9 shown in FIG. 1 and attached to the hub 8. When the wheel 3 is gripped by the wheel mounting device 9, the width shifting arm 14a and the arm 17 are pivoted and retracted so as not to get in the way.

(17) To position the next wheel, return to the state in (1) and perform the same operation.

As specifically explained above in conjunction with the embodiments, according to the present invention, the wheels can be positioned with high accuracy.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an automatic wheel assembly machine, and FIG. 2 is a sectional view showing an embodiment of the present invention. In the drawing, 3 is a wheel, 3a is a wheel disc, 3b is a bolt hole, 3c is a tire, 3d is a center hole, 4 is a tire shooter, 5 is a wheel positioning device, 8 is a hub,
10 is a frame, 11a is a pedestal roller, 11b is a pedestal, 11c is a cylinder, 11d is a roller rotation motor, 12a is a receiving cylinder, 12b is a receiving roller, 13 is a guide, 14a is a width adjusting arm, 1
4b is a presser roller, 14c is a cylinder, 14d is a rotary cylinder, 15a is a center pin, 15
b is a cylinder, 16a is a locate pin, 16b is a positioning member, 16c is a cylinder, 17 is an arm, and 18a, 18b, and 19 are optical sensors.

Claims (1)

[Scope of utility model registration request] A wheel positioning device that supplies a wheel from above by a tire shooter, holds the wheel in an upright state, and rotates the held wheel to position a bolt hole drilled in a wheel disc at a predetermined position, A pedestal roller is provided at the bottom of the device to enable slight vertical movement for vertical position adjustment, and a receiving cylinder moves the pedestal roller from below to above and moves up and down along a guide to the upper position. A receiving roller that receives a wheel in an upright state and then descends to place the wheel on the pedestal roller, and a holding roller that rolls the wheel placed on the pedestal roller into contact with the wheel from its side. a width shifting arm that pushes the wheel to make it stand up and holds it between the guide; and a center hole formed in the wheel disc of the wheel that is placed on the pedestal roller and held by the width shifting arm. a center pin that is fitted into the center pin, a pedestal lifting means that raises the pedestal roller and presses the pedestal roller against the tire of the wheel, and a pedestal that is pushed by the width shifting arm and is pressed against the wheel into which the center pin is inserted. A roller rotation motor that rotates a wheel by rotating a base roller, and a roller rotation motor that is installed at a position facing a bolt hole drilled in a wheel disk of a rotating wheel and that is turned off when the bolt hole is detected. A wheel positioning device comprising: an optical sensor that stops driving; and a locate pin that fits into another bolt hole of a stopped wheel with its bolt hole facing the optical sensor.