JP2535255B2 - Work assembly method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a pair of works such as left and right doors of an automobile by performing a plurality of types of common assembly work.

[0002]

2. Description of the Related Art Conventionally, for example, in an automobile assembly line, it is known that the left and right doors are once removed from the vehicle body, then the both doors are mounted, and after the mounting, the both doors are attached to the vehicle body again. There is.

In this type of assembly line, the left and right doors removed from the vehicle body are assembled by almost the same assembly procedure, while the parts to be assembled are largely different between the left and right doors. In the door outfitting line, they are intermittently conveyed in synchronization with different conveying paths, and are individually assembled when stopped during the conveyance.

Further, in such a door fitting line, when the assembling processing work of each door is performed by an assembling processing device such as a robot, the assembling processing device is separately arranged for the right door and the left door to the door fitting line. It is known that the left and right doors are assembled and processed by separate assembly processing devices.

However, in such a door outfitting line, even when the left and right doors are subjected to a common assembling process operation, the left and right doors are assembled by different assembling devices, so that the assembling process is performed. A large number of devices are required, the line configuration becomes large, and it is disadvantageous in terms of cost.

Further, in this type of door rigging line, the left and right doors have a symmetrical structure, so that, for example, assembling work such as coating with a sealer is common between the conveyance paths of the doors. It is also known that the left and right doors are sequentially assembled by a robot or the like.

However, in such a door rigging line, since the left and right doors are conveyed in synchronization as described above, when the left and right doors are assembled by the common assembly processing device, the left and right doors are The left and right doors must be sequentially assembled by the assembly processing device while both are stopped at the position of the assembly processing device, and therefore, the stop time of both doors becomes long and the line speed becomes slow. There was an inconvenience that the efficiency of the outfitting line decreased. If the line speed is increased in order to solve this, the assembly processing time by the assembly processing apparatus must be shortened, and in such a case, the assembly processing may be uncertain. There was

[0008]

SUMMARY OF THE INVENTION The present invention solves such inconvenience and provides a method for efficiently assembling a pair of works such as left and right doors of an automobile by using a common assembling processing apparatus. With the goal.

[0009]

In order to achieve the above object, the present invention is a method for assembling a plurality of types of common assembly processing work on a pair of works to assemble both works, and each work is assembled on its assembly line. And each of the assembling processing stations arranged on the assembly line, and carrying timings of both carrying paths separately carried by the pair of carrying paths arranged in parallel to each other.
Is loading and unloading alternately each work by shifting from each other, the two workpieces to be conveyed alternately to the assembly processing station for performing said common assembly processing operations by the transport, both transportable
Sequentially assembling process upon facilities to alternately by feed path a single assembly processing apparatus provided close between, the assembly process stearate
One of the above two workpieces is installed in the assembly processing equipment.
Assemble the other work in parallel with the assembly process
Carry it into the assembly processing station equipped with the processing equipment,
After the assembling process of the workpiece, the assembly processing device is returned to its original position.
One work is transferred from the assembly processing station according to the return
And the other work in parallel with the unloading process.
It is characterized by performing an assembling process according to the installation .

Further, the assembling processing apparatus is configured so that one of
Interfering with both transfer paths from the work assembly position on the path
After passing through the neutral position between both transport paths,
The work is swung to the assembly processing position of the
Assembly process is performed alternately on the
The work is carried out after the device is rotated to the neutral position .

[0011]

According to the present invention, since both of the works are individually conveyed through the pair of conveying paths and are alternately carried in and out of the respective assembling processing steps, the assembling processing of the both works by the assembling processing apparatus. Can be alternately and continuously performed.

In this case, at the assembly processing station for performing the assembly processing by the assembly processing apparatus, the assembly processing apparatus is provided for the other work in parallel with the assembly processing of one of the two works by the assembly processing apparatus. After being loaded into the assembly processing station and after the assembly processing of one work, one work is carried out from the assembly processing station in response to the return of the assembly processing position to the original position, and the other work is assembled in parallel with the carry-out. When the assembling process is performed by the processing device, it is possible to efficiently carry and assemble both works. Further, regarding the assembly processing device,
From the assembly processing position of the work in the transport path to both transport paths
After passing through the neutral position between both conveyance paths that do not interfere, the other conveyance path
It turns to the assembly processing position of the work in. By this
As a result, the work on both transport paths can be quickly assembled alternately.
U. In addition, both of the transport paths have the assembly processing device in the neutral position.
Since the work is carried out after being turned to the
Interference with the work is prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a work assembly method according to the present invention is shown in FIG.
And FIG. FIG. 1 is an explanatory plan view of a vehicle door fitting line, and FIG. 2 is a timing chart for explaining its operation.

In FIG. 1, 1R and 1L are conveying paths for the right door 2R and the left door 2L, which are workpieces, respectively, and these conveying paths 1R and 1L are parallel to each other on the door outfitting line. , 3.
Each of the doors 2R and 2L is placed on a pallet 5 which is intermittently conveyed on each conveyor 3 together with a component box 4 which stores a component (not shown) to be assembled therein, and each conveyor via the pallet 5. 3 is intermittently conveyed at a timing described later. In this case, the doors 2R and 2L are mounted on the pallet 5 so as to be tiltable between a position in which the doors 2R and 2L are in a substantially vertical posture and a position in which the doors are in a substantially horizontal posture. It can be tilted.

Further, in the figure, Sn-1 to Sn + 1 are respectively in order of n-1th, nth, and nth in this door rigging line.
The n + 1th assembly processing station, and of these stations Sn-1 to Sn + 1, for example, the assembly processing station Sn has an assembly processing apparatus 6 such as a sealer coating robot at a central position between the conveyors 3 and 3. Is installed. The working arm 6a of the assembly processing device 6 is rotatable leftward and rightward from the neutral position shown by the solid line in the drawing toward the doors 2R and 2L on each conveyor 3.

Next, the operation of the door rigging line will be described with reference to FIG.
And FIG. In this door rigging line, as shown in FIG. 2, the right door 2R and the left door 2L are intermittently transported cyclically with a predetermined time interval T ₁ in each of the transport paths 1R and 1L with a timing shift. 2R,
While one of 2L is stopped, the other of both doors 2R and 2L is conveyed.

That is, the two doors 2R and 2L are alternately carried in and out of the assembly processing stations Sn-1 to Sn + 1, etc., for example, while the right door 2R is stopped at the assembly processing station Sn, left. While the door 2L is conveyed from the assembly processing station Sn-1 toward the assembly processing station Sn, and the left door 2L carried into the assembly processing station Sn is stopped by the station Sn, the right door 2R is It is carried out from the station Sn to the next assembly processing station Sn + 1.

Then, the assembly processing device 6 operates at the timing shown in FIG. 2, performs a predetermined assembly process on the right door 2R while the right door 2R is stopped by the assembly processing station Sn, and , The right door 2 after the assembly process
While R is carried out from the assembly processing station Sn,
While the left door 2L is being carried into the assembly processing station Sn and stopped, the left door 2L is subsequently assembled.

More specifically, in the assembly processing apparatus 6, the working arm 6a of the right door 2R is brought into the assembly processing station Sn and stopped at almost the same time as the work arm 6a thereof is moved to the right door 2R.
The door 2R is moved toward and approaches a predetermined position of the right door 2R. After that, the door 2R is subjected to a predetermined assembly process in a state where the right door 2R is completely stopped. After this assembly processing, the work arm 6a of the assembly processing apparatus 6 is returned to the neutral position, and after the return, the right door 2R moves from the assembly processing station Sn to the next assembly processing station Sn +.
Delivered to 1.

In this case, as shown in FIG. 1, when the right door 2R is carried into the assembly processing station Sn,
It is tilted from a substantially vertical posture to a substantially horizontal posture, and is stopped in the substantially horizontal posture at the assembly processing station Sn. Then, when it is carried out to the assembly processing station Sn + 1, it is tilted again to be in a substantially vertical posture.

On the other hand, in the assembling process of the right door 2R, in parallel with this, the left door 2L is gradually tilted from the substantially vertical position to the substantially horizontal position, while the assembling process station Sn.
Is being conveyed toward the right door 2R, and is brought into the assembly processing station Sn at substantially the same time as the end of the assembly processing of the right door 2R and stopped in a substantially horizontal posture. Then, at this time, the assembly processing device 6 causes the work arm 6a to approach the predetermined position of the left door 2L following the return to the neutral position, and after that, the left door 2L is completely stopped. In this state, the door 2L is assembled similarly to the case of the right door 2R.
After this assembling process, the work arm 6a of the assembling processing device 6 is returned to the neutral position, and after the returning, the left door 2L is gradually tilted so as to be in a substantially vertical posture, and then, from the assembling processing station Sn. After being carried out, such an operation is repeated thereafter.

As described above, the assembling process by the assembling device 6 is efficiently performed alternately and continuously on the right door 2R and the left door 2L. And in this case, each door 2R,
When the 2L is carried out from the assembly processing station Sn after the assembling processing, the doors 2R and 2L are carried out after the work arm 6a of the assembly processing device 6 returns to the neutral position. Arm 6a and each door 2R,
The 2L and 2L do not interfere with each other, and the transfer / assembly processing of the doors 2R and 2L can be performed smoothly.

[0023]

As is apparent from the above description, according to the present invention, a pair of workpieces are individually conveyed through the pair of conveying paths, and are alternately carried in and out of each of the assembling processing steps. By performing a common assembly processing operation, both workpieces, which are alternately loaded into the assembly processing station, are sequentially processed by a single assembly processing device. The assembling process can be performed efficiently, and the efficiency of the work assembling line can be improved.

Further, in the assembly processing station for performing the assembly processing by the assembly processing apparatus, one of the two workpieces is assembled by the assembly processing apparatus while the other work is processed by the assembly processing station provided with the assembly processing apparatus. After carrying in and assembling one work, one work is carried out from the assembly processing station according to the return of the assembly processing position to the original position, and the other work is assembled by the assembly processing device in parallel with the carrying-out. By carrying out the processing, it is possible to carry out the carrying and assembling processing of both works extremely smoothly and efficiently. In addition, the assembly processing device
From the assembly processing position of the work in the transport path to both transport paths
After passing through the neutral position between both conveyance paths that do not interfere, the other conveyance path
Since it turns to the assembly processing position of the work in
The assembly process can be quickly performed alternately on the workpieces on the transfer route.
Wear. In addition, both of the transport paths have the assembly processing device in the neutral position.
Since the work is carried out after it is turned to the storage
It is possible to prevent the interference between the work and the work. And
By preventing the interference between the assembly processing device and the work,
As a result, the assembly processing device can be located
The assembly process can be quickly performed alternately on the workpieces on the transfer route.
Wear.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of a vehicle door rigging line to which an example of the present invention is applied.

FIG. 2 is a timing chart for explaining the operation of the outfitting line.

[Explanation of symbols]

 1R, 1L transport path 2R, 2L door (work) 6 assembly processing device Sn-1 to Sn + 1 assembly processing station

Claims (2)

(57) [Claims] 1. A method for assembling a plurality of types of common assembling processing work for a pair of works, wherein the works are individually separated by a pair of conveying paths arranged in parallel to each other on the assembly line. At the same time as transporting, the transport timings of both transport paths are mutually set to each assembly processing station arranged in the assembly line.
Is loading and unloading each workpiece alternately by shifting to have, on both workpiece to be conveyed alternately to the assembly processing station for performing said common assembly processing operations by the transport, both transportable
In order facilities to the assembly process alternately by a single assembly processing apparatus provided close between feed path, in the assembly process station, said two workpieces
While one is assembled by the assembly processor,
One workpiece is carried into the assembly processing station, and one
After the assembly process of the ark, the assembly processing device can be returned to its original position.
Depending on the type, one of the workpieces is carried out from the assembly processing station.
Then, in parallel with the unloading, the other workpiece is transferred to the assembly processing device.
Assembling process of work characterized by assembling process by
Method. (2) The assembly processing device should be installed on one of the transport paths.
From the assembly processing position of the work to be
After passing through the neutral position between the transport paths,
Turn to the assembly processing position of the
Assemble each other, and both transport paths will be
Note that the work is carried out after being turned to the neutral position.
The method of assembling a work according to claim 1, which is a characteristic of the work.