JP2557717Y2 - Pitch converter for tire assembling machines - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pitch changing device for a tire assembling machine for converting a mounting pitch of a nut runner of an automatic assembling machine for automobile tires.

[0002]

2. Description of the Related Art Conventionally, in a vehicle manufacturing and assembling line, an operation of assembling a tire is performed by a robot for a tire assembling machine. This robot for a tire assembler has a plurality of nut runners arranged on one side of the working head of the movable arm of the robot according to the pitch of the wheel nuts of the tire. Could not.

[0003] Therefore, nut runners are arranged on the front and back of the working head at the tip of the movable arm of the robot at pitches corresponding to the two types of tire mounting pitches, respectively. There has been proposed a pitch converter for a tire assembling machine to which a tire can be attached.

[0004]

However, as described above, a pitch converter for a tire assembling machine in which nut runners are provided at two different pitches on the front and back of the movable arm of the robot as described above requires a large movable arm of the robot. It becomes up and exceeds the general weight, and it is not established as a robot. Further, when the work head is rotated by 180 degrees, there is a possibility that the nut runner may interfere with peripheral devices.

[0005] Further, since the pitch of the nut supply port of the nut transfer device for supplying the wheel nut to each nut runner is only one kind, when the pitch of the nut runner of the tire assembling machine is changed, the pitch of the nut transfer device is changed. Had to be changed at the same time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pitch conversion device for a tire assembling machine that can change a plurality of types of nut runner mounting pitches with one robot for a tire assembling machine. To provide.

[0007]

According to the present invention, a pitch converter for a tire assembling machine according to the present invention includes, in order to achieve the above object, a base provided in a tire assembling machine; A movable ring supported so as to be reciprocally rotatable over a position, and moving the movable ring from the first position to a second position.
And a plurality of movable blocks provided on the base and supported so as to be able to reciprocate in the radial direction of the movable ring in an interlocking relationship with each other, and a nut runner provided on each of the movable blocks. ,
In a state where the movable ring and the movable block are connected to each other and the movable ring is rotated from the first position to the second position, the movable blocks are moved in a direction of drawing toward each other. When the nut runners are arranged at a first pitch and the movable ring is rotated from the second position to the first position, the nut runners are moved in a direction away from each other to move the nut runners to the second position. And linking links arranged at the same pitch.

[0008]

In the pitch converter for a tire assembling machine according to the present invention, when the movable ring is rotated from the first position to the second position by the driving means, the connecting link connected to the movable ring. By moving the movable rings in the direction approaching each other via the, the arrangement pitch of the nut runners is set small.

Further, when the movable ring is rotationally moved from the second position to the first position, the movable blocks move in a direction away from each other via the connection link, so that the arrangement pitch of the nut runners is set large. In this way, it is possible to change to at least two types of nut runner mounting pitches with one touch.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the pitch converter for a tire assembling machine according to the present invention will be described below with reference to FIGS.

As shown in FIG. 4, a work head 1 is provided with a base 2. The base 2 is provided on a work head at the tip of a movable arm (not shown) of the robot of the tire assembling machine. As shown in FIGS. 1 and 2, a fixed ring 3 having a perfect circular shape is provided on the base 2.
, A substantially disk-shaped guide plate 4 is provided on the inner periphery of the guide plate.

On the front surface of the fixed ring 3, support portions 5 are provided upright at four locations at equal intervals. Also, as shown in FIGS. 1 and 2, first and second rectangular stopper receivers 8 and 9 are provided on the front surface of the fixing ring 3.

As shown in FIGS. 1 and 2, a movable ring 10 is provided on the inner peripheral side of the fixed ring 3 and on the outer peripheral side of the guide plate 4. The movable ring 10 has a perfect circular ring shape. The movable ring 10 is supported by the support 5 as shown in FIG.

The support section 5 includes a support column 6 and three rotating rollers 7a, 7b, 7c. The rotation rollers 7a and 7b sandwich the movable ring 10 in the thickness direction from the front and rear surfaces of the movable ring 10, thereby restricting the movable ring 10 from moving in the axial direction (front-back direction). Further, the rotating roller 7c of the support portion 5 comes into contact with the outer peripheral surface of the movable ring 10 to regulate the position of the movable ring 10 in the radial direction. The movable ring 10 is reciprocally rotatable about a center C (shown in FIGS. 1 and 2).

A pair of operation levers 11 are fixed to the rear surface of the movable ring 10. The operation lever 11 constitutes a part of the driving means, and is attached so as to protrude outside the fixing ring 3. Further, first and second stoppers 12 and 13 using, for example, bolts are fixed to the front surface of the movable ring 10. The movable ring 10 is moved from the first position shown in FIG. 1 to the second position shown in FIG. 2 by the first and second stoppers 12 and 13 and the first and second stopper receivers 8 and 9. It is rotatable. Here, the first position means that the first stopper 12 is connected to the first stopper receiver 8 as shown in FIG.
Is the position of the movable ring 10 when it comes into contact with the movable ring 10. The second position refers to a position of the movable ring 10 when the second stopper 13 contacts the second stopper receiver 9 as shown in FIG. Incidentally, the stoppers 12 at the first and second positions,
The first and second positions of the movable ring 10 can be finely adjusted by adjusting the amount of screwing of the 13 bolts.

As shown in FIGS. 1 and 6, an actuator 14 as a driving means for rotating the movable ring 10 between the first position and the second position is provided on the outer peripheral portion of the fixed ring 3. Two are provided. Actuator 1
One example of 4 is an air cylinder. This actuator 1
The base of 4 is rotatably supported by the bracket 15 of the fixed ring 3 via a pivot pin 15a. A U-shaped connecting member 16 is provided at the distal end of the rod 14 a of the actuator 14, and is pivotally attached to the operation lever 11 via the connecting member 16.

As shown in FIGS. 1 and 2, a plurality of (four in the figure) movable blocks 18 are provided with the guide plate 4 and a plurality of pressing plates provided on the rear surface of the guide plate 4. 17 movably supported. Each of the movable blocks 18 has a substantially quadrangular prism shape, and is provided so as to be radially located at equal intervals in the circumferential direction around the center C of the movable ring 10. Also, as shown in FIG.
Roller bearing 1 between the movable block 18 and
9 is provided to slidably support the movable block 18. These movable blocks 18 can reciprocate in the radial direction of the movable ring 10 in an interlocking relationship with each other as described later.

As shown in FIGS. 4 and 5, a nut runner 20 is attached to each of the movable blocks 18. The nut runner 20 is supplied with a wheel nut from a nut delivery device (not shown). The nut runner 20 to which the wheel nut is supplied is pressed against a tire mounting bolt (hub bolt) in a state where the tire is set, and is rotated to tighten the wheel nut. And assemble the tires.

The movable ring 10 and the movable block 18 are connected to each other by a connecting link 21. When the movable ring 10 is rotated to the first position as shown in FIG. 1, the connecting link 21 moves the movable blocks 18 in the direction of pulling each other to each other, and moves the movable ring 10 to the second position. In the state rotated in the direction (see FIG. 2), each movable block 18 is moved in a direction to separate from each other. A stopper 22 is provided on the base 2 as shown in FIG.
8 does not come off the guide plate 4.

According to the pitch converting apparatus for a tire assembling machine configured as described above, when the movable ring 10 is moved to the first position shown in FIG. Move toward the base 2 in a direction of being attracted to each other in the radial direction of the movable ring 10. In this case, the nut runner 20 is
The nut is set to the first pitch by being pulled to the center C of 0 and the nut mounting pitch is set small.

When the movable ring 10 is rotated from the first position to the second position as shown in FIG. 2, the movable blocks 18 Move in the radially expanding direction. By separating the nut runners 20 from the center C of the movable ring 10 in this way, the nut mounting pitch is set large, and the setting to the second pitch is performed.

In this way, it is possible to change the nut mounting pitch of at least two types of nut runners 20 with one touch.
The wheel nut can be supplied to the tire even if the tire mounting pitch is different.

The actuator 14 serves as a driving means.
Alternatively, the switching operation may be performed by manually driving the movable ring 10 to rotate. Further, the number of the movable blocks 18 is not limited to four. Alternatively, two or more types of tire mounting pitches may be set by stopping the rotating ring 10 at an intermediate position between the first position and the second position.

[0024]

The pitch converter for a tire assembling machine according to the present invention is configured as described above, so that a single robot for a tire assembler can be changed to a plurality of types of nut runner mounting pitches.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a pitch converter for a tire assembling machine of the present invention.

FIG. 2 is a front view showing a state where a movable ring is moved to a second position in the pitch converter shown in FIG. 1;

FIG. 3 is a perspective view showing a working head of the tire mounting machine shown in FIG. 1 in a partial cross section.

FIG. 4 is a side view of the working head of the tire mounting machine shown in FIG.

FIG. 5 is a sectional view taken along line AA in FIG. 1;

FIG. 6 is a side view of the actuator of the pitch converter shown in FIG. 1;

FIG. 7 is a side view of a support portion of the pitch conversion device shown in FIG.

FIG. 8 is a sectional view taken along the line BB in FIG. 1;

[Explanation of symbols]

2 ... base, 3 ... fixed ring, 10 ... movable ring, 11
... operation lever (drive means) 14 ... actuator (drive means), 18 ... movable block, 20 ... nut runner, 2
1. Linkage link.

Claims (1)

(57) [Scope of request for utility model registration] A base provided on the tire assembling machine; a movable ring supported on the base so as to be reciprocally rotatable from a first position to a second position; and a movable ring from the first position. A driving means for driving over the second position; a plurality of movable blocks provided on the base and supported so as to be able to reciprocate in the radial direction of the movable ring in an interlocking relationship with each other; and provided on each of the movable blocks. When the nut runner, the movable ring, and the movable block are connected to each other, and the movable ring is rotated from the first position to the second position, the movable blocks are moved in directions to draw each other. With this arrangement, the nut runners are arranged at the first pitch and the movable ring is rotated from the second position to the first position. A coupling link for disposing the nut runner at a second pitch by moving the movable blocks in a direction away from each other.