JPS5951445B2 - Tire fitting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for fitting a tire onto a disc wheel.

Conventionally, disc wheels and tires are stacked on a conveyor, the conveyor is temporarily stopped at the tire insertion station, and a jig equipped with a tire pushing roller and a pushing deformation guiding tool is lowered from above. A device is used to fit a tire into a disc wheel by moving a jig around, but a pressure cylinder such as a hydraulic pressure cylinder is used to move the jig up and down and around it.

The present invention provides a tire fitting device that sequentially feeds tires stacked on top of each other onto a disc wheel, thereby automatically and continuously fitting the tires smoothly as the wheels advance without a drive source such as a hydraulic cylinder. The purpose is to

The present invention will be explained in detail below with reference to illustrated embodiments.

In Fig. 1, 1 is a slat conveyor, 2 is a stand arranged at equal intervals on the conveyor 1, and each stand 2 has its support column 3 inserted into a support tube 4 provided on the conveyor 1, and the stands 2 are arranged vertically and vertically. It is possible to move. Further, on the top surface of each stand 2, there is a jig 5 for setting a disc wheel. The lower end of the support column 3 extends inward of the conveyor 1 and is in contact with a direct-acting cam 6 fixedly installed inside the conveyor 1. 7 is a roller provided at the lower end of the column 3 to reduce frictional resistance with the cam 6.

The direct-acting cam 6 is formed into a substantially trapezoidal profile 6 so as to raise the platform 2 at the tire fitting station A. At the tire fitting station A, there is also a slat conveyor 8 above the slat conveyor 1, and both conveyors 1 and 8 are operated in parallel at the same speed.

Reference numeral 9 denotes columns fixed on the upper slat conveyor 8 at intervals equal to the pitch of the platform 2, and each column 9 has a pair of arms [0, 1] as shown in FIG. They are mounted horizontally around the center so that they can rotate in different directions.

A tire pushing roller] 2 and a pushing tool 13 for guiding the pushing deformation of the tire are supported on each arm 10, 11. When the arms 10 and 11 enter the tire fitting station A, the arms 10 and 11 have a figure-eight shape that opens in the direction of travel. 14 is a stopper for regulating the eight-figure posture; 21;
22 is a click ball for steady rest and its hole.

Arm between upper and lower slat conveyors 1 and 8] 0, 11
A pair of left and right guide rollers 15 contact each arm [0, 1] and push them backward on the traveling trajectory of the arm.
, 16 and guide frames 17, 18 are arranged.

Reference numerals 101 and 111 are contact portions of guide rollers 15 and 16.

The guide frames 17, 18 directly contact the edges of the arms 10, 11. Also, above the upper slat conveyor 8, the arms 10, 11 are rotated on the traveling trajectory of the arms 10, 11 in the opposite direction to the traveling direction.
There is a pair of left and right guide frames 19 and 20 that are in contact with and hold the arms 10 and 11 in an inverted posture.

At the starting end side of the slat conveyor 1 (right end in Figure 1),
The disk wheel D is set manually or by a robot on the returned empty platform 2, and the tire T is then superimposed on it.

When the platform 2 on which the disc wheel D and the tire T is mounted advances to the left in the figure and approaches the tire fitting station A, it gradually rises following the cam surface 61.

At the same time, the arms 10, . As the platform 2 further rises, the tire T is pushed by the rollers 12 and locally fits into the rim of the disc wheel D (position a in FIG. 1). In the above condition, stand 2
and the arm 10,] advances, and the contact portion 10 of the arms 10, 11
1,111 hits the guide rollers 15, 16, (first
The arms 10 and 11 (position in Figure b, shown by solid lines in Figure 2) are pushed backward by q as the robot moves forward.

That is, the pushing tool 13 guides the pushing deformation of the tire T in advance of the roller 12, and the roller 12 rotates around the tire T while rolling, so that the entire circumference of the tire T is fitted into the disc wheel D. When the tire T is fitted, arm 10,]1
moves away from the guide rollers ]5, ]6, but at that time the arms ]0, ]] have already come between the next positioned guide frames 17, ]8 and advance in contact with the frames 17, ]8. , the posture of the arms 10, 1 which have been inverted backwards is maintained (position C in FIG. 1, indicated by the chain line on the left side of FIG. 2). Furthermore, stand 2 and arm 1
As 0 and 11 progress, the platform 2 descends following the cam 6,
Since the conveyor 1 reaches the end and tilts, the tire T comes off the platform 2 and falls.

Empty tables are sequentially sent to the starting end. The arms 10, 11 that have rotated upward are further returned to their inverted positions by contact with the next guide frame 20, ]9, and when they come off the guide frames 19, 20 at the starting end of the conveyor 8, the arms ]0,11
rotates under its own weight, hits the stopper 14, assumes an eight-shaped posture open in the direction of travel, and comes to face the platform 2 below.

Since the tire fitting device of the present invention has the above-described structure, the disc wheel and the tire are simply placed one on top of the other on the starting end side of the conveyor 1, and the tire and the disc wheel are continuously fitted while being conveyed. It is highly suitable for mass production.

Furthermore, since the position where the tire and disc wheel are superimposed and set is apart from the tire fitting position, the safety of the worker can be ensured.

The relative pressing movement and circumferential movement of the tire pushing roller and the pushing deformation guide pushing tool against the tire are performed completely mechanically by using the conveying movement of the tire and disc wheel by a conveyor, without using any drive source such as a hydraulic cylinder. Because the system is controlled, the overall structure of the device is simplified, and it is less complicated and less likely to malfunction than the sequence control conventionally used for automatic tire fitting, making it useful as a tire fitting device. .

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the tire fitting device of the present invention, and FIG. 2 is an enlarged plan view of the tire fitting station. 1 is a slat conveyor, 2 is a stand, 6 is a cam, and 8 is a slat conveyor. 10 and 11 are arms, 12 is a tire pushing roller, 13 is a pushing tool that guides the pushing deformation of the tire, 1
4 is a stopper 15, 16 is a guide roller, 17, 18, 1
9 and 20 are guide frames, A is tire fitting station, D
is a disc wheel, and T is a tire.

Claims (1)

[Claims] 1 A platform on which disc wheels and tires are stacked is arranged at equal intervals on the conveyor so that it can move up and down, and the lower end of the column that extends downward from the platform through the conveyor touches a linear motion cam that runs along the inside of the conveyor. The part of the direct-acting cam that corresponds to the tire insertion station is formed into a substantially trapezoidal profile so as to push up the platform via the support, and at the tire insertion station, another conveyor is installed above the above conveyor to convey the upper and lower parts. The conveyor is operated in parallel at a constant speed, and a pair of arms are attached to columns fixed on the upper conveyor at intervals equal to the pitch of the tire platforms, and the arms are rotated horizontally in different directions about the column. Each arm supports a tire pushing roller and a pushing tool that guides the pushing deformation of the tire, and when the arm enters the tire fitting station, the arm is placed in a figure-eight shape in the direction of movement. A stopper is provided to hold the upper conveyor in an open position, and a pair of left and right guide rollers and a guide frame are fixedly arranged between the upper and lower conveyors on the movement path of the arm to contact the arm and push the arm backward. A tire fitting device characterized in that a pair of left and right guide frames are fixedly disposed above the movement trajectory of the arm in contact with the arm pushed backward to maintain the inverted posture of the arm.