JPH05286559A - Conveyor device of production line - Google Patents

Abstract

PURPOSE:To make an arrangement so that the specified operation is achieved by temporarily stopping goods to be worked when the specified operation which can not be achieved unless the movement of a chain conveyor is stopped is required, and the chain belt is rapidly moved to the original position and locked when the operation is completed. CONSTITUTION:In a conveyor device where goods to be worked 3 are loaded in trucks 4 which are connected to a chain belt 5 and travel on the tracks 2 provided along the production line and moved at the specified speed, a curved part 7 from which the chain belt 5 is separated from the trucks 4 is provided, the connection of the truck 4 to the chain belt 5 is automatically released when the truck 4 approaches the curved part 7, the truck 4 is moved to the exit of the curved part 7 at higher speed than the specified speed of the chain belt 5 after completion of the operation, and the chain belt 5 is locked to the original position. This arrangement allows the goods to be worked to be carried by the tact method by only one chain conveyor even when the processes are inequally pitched.

Description

Detailed Description of the Invention

[0001]

The present invention is used in a production line for mass production. Although the present invention was invented as being applied to a production line for automobiles or parts for automobiles, it can be applied to other production lines. ..

[0002]

2. Description of the Related Art A track is provided along a production line, and a truck travels on or is suspended from this track.
A production line is widely known in which a work is placed on the carriage and a chain belt for pulling the carriage at a predetermined speed is provided. A large number of work positions are set along this production line, predetermined tools and workers are arranged at the work positions, and the predetermined works are assigned to the work positions, and the parts required at the work positions are assigned. The workpieces are supplied from outside the production line, and the work piece placed on the trolley is designed to be gradually completed as it sequentially passes through this work position.

In such a production line, the chain belt is driven continuously at a very low speed.
There is a case of intermittent driving in which high-speed driving is performed periodically at fixed time intervals. In the case of continuous drive, at each work position, the worker or the tool moves in the defensive range together with the driving of the chain belt, and the work contents are assigned so that the work is completed within the defensive range. In the case of intermittent driving, the work can be worked while the work is stopped, and the work content is assigned so that the work at the work position is completed within the driving cycle.

[0004]

An automobile manufacturing assembly line or an engine and other parts assembly line is generally operated by continuous drive, and is configured to pass a working range of one operation in, for example, 7 to 8 minutes. There is. However, depending on the work content, it may be inconvenient to work while moving, so for certain work, stop moving the work at that work position, and continue moving after the work is completed. Can be efficient.

In addition, the temporary work is separated from the chain belt to stop the work, and when the work is completed, the work is connected to the position of the chain belt locked before the temporary stop. It is convenient to reduce the effect on the.

The present invention has been made against such a background, and in a manufacturing line in which a chain belt is continuously driven, the work can be temporarily stopped and the work can be performed only for a specific work content. The purpose is to provide a device. It is another object of the present invention to provide a device which is set so that the work can be locked at the position in front of the chain belt that is continuously driven when the work performed by temporarily stopping the work is completed. ..

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a track provided along a production line, a trolley on which a work is placed and which is supported by the track to support its weight, and a track along the track. A chain belt arranged and driven at a predetermined speed,
In a conveyor device of a production line provided with a locking tool for connecting and pulling the carriage to the chain belt, a bent portion that separates the chain belt and the track is provided in a part of the track, and the locking tool is When the carriage approaches the entrance of this bent portion, the connection between the carriage and the chain belt is automatically disengaged, and in the bent portion, the carriage is moved from the predetermined speed to the exit of the bent portion. It is characterized in that it is provided with a high-speed conveying means for moving at a high speed.

The bent portion is formed so that the chain belt descends in the vertical direction, the high-speed conveying means is a pusher that pushes from the stop position of the carriage to the outlet by hydraulic pressure or pneumatic pressure, and the driving timing and speed are the same as those described above. It is desirable to include control means for controlling the connection at the same position as the position of the chain belt before disconnection at the outlet.

[0009]

When the carriage that is locked to the chain belt that is driven at a predetermined speed reaches the bending portion of the chain belt, the chain belt descends along the bending portion, so that the locking member of the carriage and the chain belt The connection is automatically disengaged to stop the movement of the truck. When the work on the stopped trolley is completed, it is confirmed that the work can be carried into the next process, and the trolley is forcibly pushed up to the position where the bent portion rises at a speed faster than the movement speed of the chain belt, and then lifted The locking tool is inserted between the links of the chain belt that has been moved to move the carriage to the next step. The locking of the link to the chain belt is controlled so that the link is connected at any position when the vehicle is transferred.

Thus, when there is work that cannot be carried out without stopping the movement of the chain belt, the carriage can be separated from the chain belt and stopped, and the work can be carried out. It is also possible to tact-transfer the work piece while maintaining the line balance with one chain conveyor.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a partial side view showing the structure of a production line according to an embodiment of the present invention, FIG. 2 is a view showing an engaged state of a chain belt and a locking tool according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. The front view seen from the moving direction of the production line according to the example, FIG.
FIG. 4 is a side view of the high-speed conveying means according to the embodiment of the present invention, and FIG. 4 is a plan view showing the entire production line according to the embodiment of the present invention.

In the embodiment of the present invention, a track 2 provided along the production line 1, a trolley 4 on which a work 3 is placed and whose weight is supported by the track 2 and travels, and a track 2 are provided. The chain belt 5 is arranged and driven at a predetermined speed, and a locking tool 6 that connects the truck 4 between the links of the chain belt 5 and pulls it. Further, as a feature of the present invention, the track 2 is provided.
A bent portion 7 is provided at a part of the chain belt 5 so that the track 2 and the track 2 are separated from each other. When the carriage 4 approaches the entrance of the bent portion 7, the locking tool 6 automatically disengages the connection between the carriage 4 and the chain belt 5. The bent portion 7 is provided with a high-speed conveying means 8 for moving the carriage 4 to the exit of the bent portion 7 at a speed higher than a predetermined speed.
Are formed so as to descend in the vertical direction.

The high speed conveying means 8 is a pusher 11 which reciprocates at high speed in the moving direction of the production line 1 by hydraulic pressure or air pressure.
And a feeder 12 that is connected to the pusher 11 and pushes the carriage 4 from the stop position to the exit, and at which timing the truck 4 is driven at high speed and at which exit, the locking tool 6 of the carriage 4 links which chain belt 5 It includes a control means for controlling the connection so that it is connected even when the vehicle is moved to. The drive speed of the pusher 11 can be adjusted to an arbitrary speed by the control of this control means.

Further, the carriage 4 is provided with a bracket 13 for receiving the force pushed out by the feeder 12, and the feeder 12 has a first pawl 14a engaging with the bracket 13 and a first pawl 14a for stopping the movement of the bracket 13 at a predetermined position. A second pawl 14b.

Next, the operation of the embodiment of the present invention thus constructed will be described.

As shown in FIG. 2, the locking tool 6 of the carriage 4 is engaged between the links of the chain belt 5 to move in the conveying direction on the production line 1 to reach the entrance of the bent portion 7. 5 starts descending. As the chain belt 5 descends, the locking tool 6 of the carriage 4 disengages and the carriage 4 stops moving.

In the process until the carriage 4 stops moving,
The bracket 13 provided on the carriage 4 contacts the first pawl 14a of the feeder 12, and the first pawl 14a receives the force and falls in the traveling direction of the carriage 4 to pass the bracket 13. After the bracket 13 passes, it returns to its original position by a return spring (not shown). The bracket 13 stops between the first pawl 14a and the second pawl 14b corresponding to a predetermined stop position range of the carriage 4 as shown in FIG.

The position at which the carriage 4 is stopped is at the production line 1
A section in which work is performed by a robot fixedly installed above, and in the case of work performed by a worker, even if the work 3 is moving, the work is carried out along the movement. However, in the case of a fixed robot, it is installed when the work cannot be performed unless the movement of the work is stopped.

Assuming that such a section is in the position A shown in FIG. 5, the carriage 4 that has stopped moving.
When the robot 21 or 22 performs the work on the upper work 3 and the work is completed, the control means (not shown) provided in the high-speed transport means 8 drives the pusher 11.

When the pusher 11 is driven, the feeder 12 is pushed out at high speed in the arrow direction along the flow of the production line shown in FIG. When the feeder 12 is pushed out, the first pawl 14a comes into contact with the bracket 13 and pushes the carriage 4 to a predetermined position at a high speed. The pushed cart 4 hits the second pawl 14b of the feeder 12 and stops. Immediately after that, the feeder 12 lowers its tip to the position shown by the chain double-dashed line in FIG. 4 and stops, and stands by in a position where it does not come into contact when the bracket 13 passes. When the bracket 13 passes, the pusher 11 pulls the feeder 12 back to the original position.

The pushed cart 4 moves to the position shown by the chain double-dashed line in FIG. 1 and reaches the exit of the bent portion 7 and begins to rise. Engage as shown in FIG. 3 to restart the movement of the work piece 3. The timing and drive speed for driving the pusher 11 are controlled by a built-in control circuit.

Although the present embodiment has been described for the automobile production line, any other production line can be used as long as the carriage is moved by the chain belt.

[0023]

As described above, according to the present invention, when the work cannot be performed unless the work is stopped on the production line where the movement is continued, the chain conveyor is moving. Automatically disengages the dolly on which the work piece is placed and engages the separated dolly with the original position of the chain belt after the work is completed.Therefore, there is an unequal pitch between the processes. However, there is an effect that the work can be conveyed by the tact method while maintaining the line balance on one chain conveyor.

Furthermore, it is possible to apply a process having an unequal pitch to an existing production line without incurring a large amount of cost. Further, even when a new production line is installed, a complicated structure is not required, so that the equipment cost can be reduced. There is an effect that can be reduced.

[Brief description of drawings]

FIG. 1 is a partial side view showing a configuration of a production line according to an embodiment of the present invention.

FIG. 2 is a view showing an engaged state of a chain belt and a locking tool according to the embodiment of the present invention.

FIG. 3 is a front view seen from the moving direction of the production line according to the embodiment of the present invention.

FIG. 4 is a side view of the high-speed transport means according to the embodiment of the present invention.

FIG. 5 is a plan view showing the entire production line according to the embodiment of the present invention.

[Explanation of symbols]

 1 Production line 2 Orbit 3 Workpiece 4 Carriage 5 Chain belt 6 Locking tool 7 Bending part 8 High-speed transportation means 11 Pusher 12 Feeder 13 Bracket 14a First pawl 14b Second pawl 21, 22 Robot

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65G 47/52 A 8010-3F // B62D 65/00 L

Claims (3)

[Claims] 1. A track provided along a production line,
A dolly on which a work is placed and which is supported by the track to support its weight, a chain belt disposed along the track and driven at a predetermined speed, and the dolly connected to the chain belt and pulled. In a conveyor device of a production line provided with a locking tool, a bent portion where the chain belt and the track are separated from each other is provided in a part of the track, and the locking tool is provided when the carriage approaches the entrance of the bent section. The structure is such that the connection between the carriage and the chain belt is automatically disengaged, and the bent portion is provided with a high-speed transport means for moving the carriage at a speed higher than the predetermined speed to the exit of the bent portion. The production line conveyor device. 2. The production according to claim 1, wherein the bent portion is formed so that the chain belt descends in the vertical direction, and the high-speed conveying means is a pusher that pushes from a stop position of the carriage to the outlet by hydraulic pressure or air pressure. Line conveyor equipment. 3. The high speed conveyance means includes control means for controlling the driving timing and speed so that the driving timing and speed are connected to the same position as the position of the chain belt before the connection is disengaged at the outlet. Production line conveyor equipment.