JP2573036Y2 - Automatic tire mounting device - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to relates to a tire automatic mounting joining apparatus for automatically mounting the tire on the automobile of the hub.

[0002]

2. Description of the Related Art In an automobile assembly line, a tire mounting device for automatically mounting a tire on a hub is used.
As shown in FIG. 8 , this device comprises a robot arm 1 which can be changed in various directions, a tire gripping arm 2 for gripping the outer diameter surface of the tire T, and a plurality of nuts for tightening hub nuts.
The head 4 includes a main body plate 10 and a runner unit 3 . Although not shown in FIG. 8, a visual camera for detecting a tire hub hole is arranged in parallel with the nut runner unit 3.

The nut runner unit 3 is shown in FIG.
As shown in FIG.
Two runner shafts (not shown) can be rotated on both sides
The runner shafts are
And a rotary drive source 3c (motor).
So that the two runner shafts are driven to rotate.
This is the configuration. Then, the phase determining device 50 for matching the phase of the socket 3a with the phase of the hub nut on the nut feeder is connected to the nut runner unit 3 as shown in FIG.
It is provided in close proximity .

[0004] As shown in FIG.
One of the two runner shafts on the left and right
A runner claw 51 is provided on a plate 52 fixed to the side of the runner claw 51 so as to be swingably supported by a support shaft 54, and the spring 55 is always used to support the runner claw 5.
And a cylinder 5 for releasing the engagement of the pawl 53 from the runner claw 51.
6 is comprised.

To determine the phase by the phase determining device 50 , the cylinder 56 is retracted and the
3 abuts against the stopper 57 rotary drive source in a state of stopping
I Ri rotating indexing the runner shaft 3c, runner pawl 51 engages with the Pouru 53 phasing stops the rotation of the runner shaft is completed.

Further, when tightening the nut, as shown in FIG. 11, the cylinder 56 is advanced to rotate the pawl 53 in the opposite direction to that in determining the phase, to escape from the rotation range of the runner claw 51, and to rotate the runner shaft. .

[0007]

In the above-described conventional phase determining device, the space occupied by the side of each nut runner unit 3 is large, and each of the runner shafts is connected to one.
I cannot attach one to one. Therefore, two runners
It is doing a phase determined by one of the phase-determining apparatus for the shift.

[0008] Therefore, the individual runner shaft
The phase of the unit cannot be determined. That is, two runners
The shaft is rotationally driven by one rotational drive source 3c.
Because, to adjust the socket of the phase of one of the runner shaft
Then, the other runner shaft also rotates, so the other runner shaft
The phase of the inner shaft socket has changed,
The phase of the nut does not match, resulting in poor reception of the hub nut
I do. When the rotation of one runner shaft stops,
Since the rotation of the other runner shaft also stops,
If one hub nut becomes improperly tightened, the other hub nut
There is also a problem that the fastening becomes poor .

An object of the present invention is to provide an automatic tire mounting apparatus which solves the above-mentioned conventional problems.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a plurality of radially expanding and contracting tire gripping arms arranged at equal intervals on a main body plate, and a rotating arrangement.
Run with a socket at the front end
Nutrunner units with nut shafts
A runner shuff for each of the nut runner units
A runner claw fixed with the engagement surface facing in the rotational direction on the runner , adjacent to a position parallel to the axis of the runner shaft.
The runner is fixed to a guide member by a cylinder.
A nut guided movably on an axis parallel to the shaft
To the knuckle and the knuckle
The runner pawl is engaged with the runner claw.
It is provided with a phase determining device composed of claws .

[0011]

According to the above configuration, the phase determination of the sockets of the plurality of nut runner units is determined by each of the racks.
This can be performed by a runner claw disposed on the inner shaft and a phase determining device.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes a main body plate, and 2 denotes a tire gripping arm. Reference numeral 20 denotes a plurality of nut runner units.

The nut runner unit 20 is shown in FIG.
As shown in the figure, a runner shaft 23 is rotatably supported via a ball bearing on a nut runner bracket 21 movable forward and backward by a cylinder 22, and a socket 24 is attached to a front end of the runner shaft 23. A pulley 27 is fixed to the end.

An air motor 25 is fixed to the nut runner bracket 21, and a pulley 26 is fixed to a rotating shaft of the air motor 25, and a timing belt 2 is attached to the pulley 26 and a pulley 27 at the rear end of the runner shaft 23.
8 have been bridged.

In FIG. 1, reference numeral 30 denotes a phase determining device provided in each nut runner unit 20. The configuration of the phase determining device 30 will be described with reference to FIGS. A runner claw 31 is fixedly mounted on the runner shaft 23 with the engagement surface directed in the rotation direction .

The runner shaft 23 is parallel to the axis.
The support member 34 is located adjacent to the nut runner
The support member 34 is fixedly mounted on the racket 21 and a guide member
40 is fixed via a shim 39 so as to be position-adjustable.

A knuckle 36 is provided on the guide member 40.
Retractable in the axial direction parallel to the runner shaft 23
The knuckle 36 is engaged with the engaging claw 35 from the knuckle 36 in an axial direction perpendicular to the moving direction.
Are urged toward the runner claw 31 by a spring 37 in the pushing direction. A cylinder 38 is fixed to the rear end of the guide member 40 and is connected to the knuckle 36.

Since the present invention has the structure as described above, each nut runner unit 20 is moved forward and backward by the cylinder 22, the runner shaft 23 is rotated by the air motor 25, and the nut runner bracket 21 is moved to the cylinder 22.
And automatically attaches the tire gripped by the tire gripping arm 2 to the hub of the axle with the required tightening torque using the hub nut.

Prior to the mounting of the tire, when receiving the hub nut supplied from the feeder to the socket 24 of each nut runner unit 20, the visual camera recognizes the tire hub hole gripped by the tire gripping arm 2 and determines the phase. Is performed. This is performed by the phase determining device 30 provided in each nut runner unit 20.

In this operation, the engaging claw 35, which is retracted to avoid the interference with the runner claw 31, is advanced by the cylinder 38 to the knuckle 36 toward the front end of the guide member 40.
Thus, as shown in FIG. 7A, the engaging claw 35 interferes with the runner claw 31 and is pulled in against the pushing force of the spring 37. Further, as shown in FIG. 7 (B), when the runner pawl 31 is rotated by the runner shaft 23 and the engaging pawl 35 is disengaged from the runner pawl 31, the engaging pawl 35 is pushed out by the spring 37, and FIG. As shown by, the rotation of the runner shaft 23 is restricted by engaging with the engaging surface of the next runner claw 31 that has been rotated, and the phase is determined.

When the hub nut is tightened after the phase is determined, the engaging claw 35 is moved backward by the cylinder 38 via the knuckle 36 to disengage the engagement with the runner claw 31 to avoid interference with the runner claw 31. The runner shaft 23 is rotated. As a result, the runner units A and B perform the tightening operation, and the insufficient tightening is performed on all the nuts.
Evaded.

[0022]

[Effect of the invention] As described above, according to the invention, the runner
Guides fixed adjacent to a position parallel to the axis of the shaft
The member is parallel to the runner shaft by a cylinder.
A knuckle guided to move forward and backward along the axis,
Provided by being always pushed and biased by a spring on the wheel
And a phase comprising an engaging claw engaged and disengaged from the runner claw.
Phase deciding device
Space is a small space that allows multiple
To each runner shaft of the runner unit
On the other hand, a phase determination device can be provided, and phase determination can be performed for each runner shaft of each nut runner unit, and each nut runner socket can be adjusted independently, eliminating poor reception of hub nuts. it can. In addition, a structure in which one drive source is used for one nut runner becomes possible, and the tightened state of the nut is improved.

[Brief description of the drawings]

FIG. 1 is a front view of the overall configuration of the present invention.

FIG. 2 is a side view of the nut runner unit.

FIG. 3 is a side view of the phase determining device.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a view taken in the direction of arrow B in FIG. 3;

FIG. 6 is a view taken in the direction of arrow C in FIG. 4;

FIG. 7 is a diagram illustrating the operation of the phase determining device.

FIG. 8 is a perspective view of an automatic tire mounting device.

FIG. 9 is a front view of a conventional automatic tire mounting device.

FIG. 10 is a front view of a conventional phase determining device.

FIG. 11 is an explanatory diagram of a phase determination release state of the conventional phase determination device.

[Explanation of symbols]

 2 Tire gripping arm 20 Nut runner unit 23 Runner shaft 24 Socket 30 Phase determining device 31 Runner claw 35 Engagement claw 36 Knuckle 37 Spring 38 Cylinder

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of tire gripping arms arranged at equal intervals on a main body plate and expanding and contracting in a radial direction ;
Runner that can move forward and backward and has a socket at the front end
Equipped with a plurality of nut runner units having a shaft ,
On the runner shaft of each nut runner unit
A runner pawl fixedly provided toward the engagement surface in the rotational direction, the
Fixed adjacent to a position parallel to the runner shaft axis
The runner shaft by means of a cylinder
A knuckle guided to be able to move forward and backward along an axis parallel to
This knuckle is always pushed and biased by a spring.
And an engaging claw that is disengaged from the runner claw.
An automatic tire mounting device comprising a phase determining device.