JPH023403Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a synchronization device that moves an automatic working machine that works on a car being conveyed on a production line in synchronization with the car. be.

(Prior Art) In automobile production lines, it is common practice to sequentially perform various operations on automobiles while transporting the automobiles on a conveyor. In such an automobile production line, in order to use an automatic working machine to work on a car, the automatic working machine must be set at a predetermined position relative to the car on the conveyor, and must be placed at a predetermined position relative to the car being transferred by the conveyor. It is necessary to move them in synchronization. Conventionally, in order to move an automatic working machine in synchronization with a car, the moving means of the automatic working machine has been electrically synchronized with the conveyor drive means, as shown in Japanese Utility Model Application Publication No. 55-127098, for example. It is proposed to drive However, in this synchronization method, the actual vehicle transfer speed and automatic work machine movement speed are not detected, so the synchronization between the two is only rough, and it is not suitable for automatic work machines that perform precise work. Difficult to apply.

Although it is possible to move an automatic work machine in accurate synchronization with a vehicle by using a known speed sensor, servo mechanism, etc., a synchronization device using such a device is naturally expensive.

(Purpose of the invention) The present invention was made in view of the above circumstances, and aims to accurately set an automatic working machine at a predetermined position relative to a car on a conveyor, and to synchronize it accurately with the car. It is an object of the present invention to provide a synchronization device for an automatic working machine that is movable and can be formed at low cost.

(Structure of the invention) The synchronization device of the automatic working machine for conveyor transfer according to the invention is used to perform work on a work point provided at a predetermined position of a car on the conveyor on rails laid parallel to the conveyor. The automatic working machine is equipped with a reference arm that comes into contact with the front side of one wheel of a car on the conveyor in the car transport direction to determine the gripping position of the wheel; a pressing arm that is movable and capable of pressing and holding the wheel together with the reference arm after the wheel contacts the reference arm; and a drive means that moves both arms in and out of the conveyor and presses the pressing arm. The present invention is characterized in that it is provided with wheel gripping means for positioning the automatic working machine in the longitudinal direction of the vehicle with respect to the vehicle.

(Effect of the invention) When the wheel of the automobile is gripped by the wheel gripping means, the automatic working machine takes a predetermined position with respect to the car, and the position of the working part of the automatic working machine with respect to the work area is determined. . Since the automobile and the automatic working machine are integrated through this wheel gripping means, the two naturally move in precise synchronization, and the automatic working machine can perform work efficiently and accurately. Furthermore, since the grip is made to grip the vehicle's wheels, the vehicle will not be damaged.

(Embodiment) FIGS. 1 and 2 show a synchronization device for an automatic working machine in conveyor transfer according to an embodiment of the present invention. The automobiles 1 assembled on the production line are placed on conveyors 2, 2' with their front portions facing right in FIG. 1, and are transported in the direction of arrow A in FIG. 1 to undergo various operations in sequence. conveyor 2,
A pair of rails 3, 3' extending in parallel along the conveyors 2, 2' are laid on the sides of the conveyor 2', and on these rails 3, 3', the cart 5 of the automatic working machine 4 is mounted.
It is mounted movably on wheels 6.

The automatic working machine 4 in this example is a device that automatically injects washer liquid into a washer liquid tank 7 provided at a predetermined position in the automobile 1, and has a nozzle 9 at the tip as a working part that communicates with a washer liquid hose 8. The arm 10 is moved forward and backward, and the shaft 11
The nozzle 9 is rotated around , so that the nozzle 9 is aligned with the injection port of the washer fluid tank 7, which position varies depending on the model of the vehicle 1. car 1
are to be placed at predetermined left and right positions (vertical positions in Figure 1) on the conveyors 2 and 2', but since it is inevitable that errors will occur in the placement positions, A tactile sensor 12 and a potentiometer 13 interlocked with the sensor 12 are provided to detect the actual lateral position of the vehicle on the conveyor 2, thereby finely adjusting the position of the nozzle 9 in the lateral direction of the vehicle. .

The trolley 5 of the automatic working machine 4 has a swing shaft 14 at one end.
The arrow B in FIG.
A reference arm 15 is attached which can swing in the direction. The tip of a piston rod 16a of a power cylinder 16 such as an air cylinder is connected to the center of the reference arm 15, and when the piston rod 16a is extended or contracted, the reference arm 15 protrudes toward the conveyor 2, or It swings so as to retreat to the side of the conveyor 2 (downward in FIG. 1). The other end of the reference arm 15 is formed with a wheel gripping portion 15a that faces toward the rear of the automobile 1 when the reference arm 15 is projected toward the conveyor 2 by the power cylinder 16 as described above. There is.

Another power cylinder 17 is supported on the truck 5 in parallel with the conveyor 2, and a pressing arm support member 18 is fixed to the piston 17a of the power cylinder 17. This support member 18 is connected to a press arm 2 via a rotary cylinder 19.
0 is supported. The rotary cylinder 19 swings the pressing arm 20 in the direction of arrow C in FIG.
A wheel gripping portion 20a is formed at the tip of the pressing arm 20, and faces toward the front of the automobile 1 when the arm 20 is projected toward the conveyor 2.

A cable 21 is laid between the rails 3 and 3',
The automatic work machine 4 receives power current from this cable 21,
It operates when a signal current is supplied.

The effects of the apparatus having the above configuration will be explained below. The trolley 5 stands by with the reference arm 15 and the pressing arm 20 set at a position laterally retreated from the conveyor 2. When the car 1 is transported close to the trolley 5 by the conveyors 2, 2', the piston 16a of the power cylinder 16 is extended, and the reference arm 15 is moved so that its wheel gripping part 15a is perpendicular to the car transport direction. It is projected to the conveyor 2 side so that The wheel gripping portion 15a is set in a position to directly face the wheel 22 of the vehicle 1 (the right front wheel in this example) under this condition, and when the vehicle 1 is subsequently transported, the front surface of the wheel 22 is It comes into contact with the grip part 15a. Therefore, the trolley 5 is
The wheel gripping portion 15a is pushed by the wheel 22 and begins to move together with the automobile 1. Subsequently, the rotary cylinder 19 is actuated, and the pressing arm 20 is also projected toward the conveyor 2 so that the wheel gripping portion 20a is perpendicular to the vehicle transport direction (the wheel gripping portion 20a, under this condition, (It is set in a position directly facing the rear). At the same time, the piston 17a of the power cylinder 17 is extended, and the pressing arm 20 is moved toward the front of the vehicle (to the right in FIG. 1), and together with the reference arm 15 grips the wheel 22 from the front and back.

Therefore, the trolley 5 (that is, the automatic working machine 4
) is set at a predetermined position with respect to the wheel 22, that is, with respect to the vehicle 1, and the nozzle 9 of the automatic working machine 4 can be accurately moved if the arm 10 is given a predetermined movement depending on the type of vehicle 1. It is matched with the inlet of the washer liquid tank 7. It goes without saying that the washer liquid injection work takes some time, but because the reference arm 15 and the pressing arm 20 grip the wheel 22 as described above, the automatic working machine 4 can easily move the vehicle 1.
The washer fluid filling operation can be continued by moving in complete synchronization with the washing machine.

When the washer fluid injection work is completed, the piston 16a of the power cylinder 16 is compressed, and the reference arm 15 is moved away from the wheel 22 and retreated to the side of the conveyor 2. Therefore, the automatic working machine 4 is no longer pushed by the wheels 22 and stops. At the same time, the pressing arm 20 also moves out to the side of the conveyor 2 by actuating the rotary cylinder 19, and returns to a position far back from the reference arm 15 by contracting the piston 17a of the power cylinder 17. It can be done. Next, the trolley 5 is returned by a moving device (not shown) to a waiting position on the upstream side (left side in FIG. 1) in the direction of vehicle transport, and waits for the next vehicle 1 to be transported.

The above is the automatic working machine 4 that injects washer fluid.
Although one embodiment of the present invention applied to the above has been described, the present invention can be applied to any automatic working machine that moves in synchronization with a car on a conveyor that is continuously transported.

[Brief explanation of the drawing]

Figure 1 is a plan view showing one embodiment of the present invention, Figure 2 is a plan view showing one embodiment of the present invention;
The figure is an elevation view. 1... Car, 2, 2'... Conveyor, 3,
3'...Rail, 4...Automatic working machine, 7...Water fluid tank, 9...Nozzle, 15...Reference arm, 15a, 20a...Wheel gripping part, 16, 1
7... Power cylinder, 19... Rotary cylinder, 20... Pressing arm, 22... Wheel.

Claims (1)

[Scope of Claim for Utility Model Registration] Synchronizing an automatic working machine with a working part that performs work on a working area provided at a predetermined position of a car that is continuously transported with its wheels on the ground on a conveyor at a predetermined position, in synchronization with the transport of the car. The automatic working machine is a synchronizing device, and the automatic working machine is movably mounted on a rail laid parallel to the conveyor, and the automatic working machine includes a vehicle transfer mechanism for one wheel of a vehicle on the conveyor. Contact the front side in the direction,
A reference arm that determines the gripping position of the wheel, a pressing arm that is movable relative to this reference arm and that can press and hold the wheel together with the reference arm after the wheel contacts the reference arm, and these arms are connected to the conveyor. and a drive means for moving the pressing arm in and out of the vehicle, and a wheel gripping means for positioning the automatic working machine in the longitudinal direction of the vehicle with respect to the vehicle. Synchronization device for automatic work equipment.