JPS5846394B2 - Wheel spot welding positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel spot welding positioning device that positions a wheel for spot welding using a valve hole drilled in a wheel rim.

Conventionally, when positioning a wheel by spot welding, it was necessary to assign a worker dedicated to the welding positioning work, and the positioning was done manually each time. However, it could not be ignored that the cost would be high.

The present invention was made in view of the current situation, and specifically, it includes a turntable for rotating a wheel, which is installed in the process of a wheel conveyance line, and a turntable for rotating a wheel, which is provided on the turntable and comes into contact with the outer peripheral surface of the wheel. , a fixing means consisting of a group of rollers that moves the wheel forward and backward in the vertical or feed direction and fixes the wheel at a predetermined position, and a fixing means that is installed above the turntable and slides into the Hoino 0 scoop rev hole by its own weight. A positioning pin that moves downward, means for moving the positioning pin in the radial direction of the wheel in accordance with the position of the valve hole, and a limit switch that stops the rotation of the turntable when the positioning pin falls down into the valve hole. The present invention relates to a wheel spot welding positioning device.

An embodiment of the present invention will be described below based on the drawings. The wheel spot welding positioning device S according to the present invention includes a conveying device C that conveys the wheel 1 at a predetermined positioning position, and a conveying device C that conveys the wheel 1 at the predetermined positioning position. It consists of a wheel fixing device for fixing the wheel, and a positioning device P for rotating the fixed wheel 1 and inserting a positioning pin 13 into the only valve hole 2 bored in the rim of the wheel 1 to perform spot positioning. The conveying device C, wheel fixing device, and positioning device P have the following related configurations.

The conveyance device C is composed of a roller conveyor 3 and a stopper 5 equipped with a hook-shaped hook 4. It is set up.

The twisted stopper 5 is provided at one end of the roller conveyor 3 so that the tip of the hook 4 protrudes from the upper surface of the roller conveyor 3 and comes into contact with the inner peripheral surface of the flange of the wheel 1 to lock the wheel 1.・This hook 4 is set to move up and down by a cylinder 6.

The wheel fixing device includes a turntable pull 7 with the same diameter or a slightly smaller diameter as the wheel diameter provided at the discharge end of the roller conveyor 3 of the conveying device C, and this turntable 7.
a rotatable stopper roller 8,8' on which the wheel 1 is placed exactly;
A rotatable holding roller 9 is arranged in a position within the row.
, 9', and these stopper rollers 8° 8' and restraining rollers 9, 9' surround the wheel 1 on the circumferential side of the flange portion of the wheel 1 placed on the turntable 7. The wheel 1 is fixed on the turntable 7 by the special contact.

The lower surface of the turntable 7 is connected to a drive shaft 10 such as a motor (not shown), and the turntable 1 is configured to rotate in a constant direction at a constant speed when driven by the motor.

Further, the stopper rollers 8, 8' are constructed so that the distance between them can be expanded by a screw adjusting device 11 so as to correspond to the diameter of the wheel 1, while the holding rollers 9, 9' are arranged as described above. Wheel 1 turntable full 7
The button is arranged in a position that does not interfere with the conveyance of the wheel 1 when the wheel 1 is conveyed upward, and when the wheel 1 is fixed on the turntable 7, the button is pressed and the flange portion 1 of the wheel 1 on the turntable 7 is advanced by the cylinder 12. It is arranged so that it can move forward and backward freely.

The positioning device P is a single valve hole 2rtc drilled in the rim of the wheel 1 placed and fixed on the turntable 7.
The positioning pin 13 to be inserted and this positioning pin 13
a positioning pin lowering positioning cylinder 14 for adjusting the position corresponding to the position of the rim valve hole 2 of the wheel 1;
A switch 1 that operates when the positioning pin 13 is fully inserted into the valve hole 2 of the rim to stop the turntable 7 from rotating.
It consists of 5.

Note that 16 indicates a cylinder for lowering the positioning pin 13.

Next, to explain the operation, the hook 4 is activated in advance by actuating the cylinder 6 to protrude above the roller conveyor 3, and the wheel 1, which has been transferred by another conveyance means, is locked at the carry-in end of the roller conveyor 3. At the same time, the screw adjustment device 11 is operated to set the stopper rollers 8, 8' to correspond to the diameter of the wheel 1, and the pressed roller 9
, 9' is moved back by the cylinder 12 at a position that does not interfere with the transfer of the wheel 1, and the button is pressed.
3 to the position corresponding to the rim valve hole 2 of the wheel 1 using the cylinder 14.

If the cylinder 6 is now actuated to lower the hook 4 from this state, the engagement between the wheel 1 and the hook 4 will be released, and the wheel 1 will be transferred by its own weight to the discharge end side of the roller conveyor 3 and the turntable γ carried upwards.

At this time, the flange part of the wheel 1 is connected to the stopper roller 8.
．． The rollers 9 and 9' are placed on the turntable 7 in abutting contact with the flange portion of the wheel 1 by the cylinder 12. fixed on top.

Thereafter, the positioning pin 13 is lowered by the cylinder 16 until it comes into contact with the well portion 1a of the rim of the wheel 1, and in response, the turntable 7 begins to rotate.

Then, while sliding the soil in the well part a, the positioning pin 1 is
When the tip of the positioning pin 3 reaches the rim pulp hole 2 drilling position 1 of the wheel 1, the positioning pin 13 falls into the pulp hole 2 and is inserted.

At this time, the upper end of the positioning pin 13 presses the switch 15, so the rotation of the turntable 7 is stopped and the spot positioning of the wheel 1 is completed.

As mentioned above, this invention is compatible with a wide variety of wheels and allows spot positioning to be performed using the only valve hole drilled in the rim without having to replace the jig one by one. This can be done accurately and easily, regardless of the number of holes or the configuration of the disc rising part, and as a result, it is possible to improve work efficiency and perform spot welding at the desired location on the wheel. Therefore, it is possible to achieve uniform quality, and furthermore, the structure of the jig itself can be simplified, which has many beneficial effects in spot welding work of wheels.

It goes without saying that the present invention can be applied with appropriate modifications within the scope of the claims and according to the purpose of its implementation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an explanatory diagram showing the outline of the device, Fig. 2 is an explanatory diagram of the operation showing the state in which the wheel is fixed on the turntable, and Fig. 3 is the positioning diagram. FIG. 3 is an explanatory diagram showing a state in which a pin and a rim valve hole are inserted. 1...Wheel, 2...Wheel rim valve hole, 1
3...Positioning pin, C...Transport device, L...Foil fixing device, P...Positioning device.

Claims (1)

[Scope of Claims] 1. A turntable that rotates the wheel, which is installed in the process of the wheel conveyance line, and a turntable that is placed on the turntable and touches the outer peripheral surface of the wheel, and that moves the wheel forward and backward in the vertical or feed direction. , a fixing means consisting of a group of a plurality of rollers for fixing the wheel at a predetermined position, and a positioning pin provided above the turntable that slides down into the valve hole of the wheel by its own weight. Spot welding of a wheel, comprising means for moving the positioning pin in the radial direction of the wheel in accordance with the position of the valve hole, and a limit switch that stops the rotation of the turntable when the positioning pin falls down into the valve hole. Positioning device.