JPH0639323A - Method and device for automatic surface treatment - Google Patents

Abstract

PURPOSE:To set a following work to be treated quickly on a surface work zone by means of a simple movement control by returning a base truck to the initial position in the surface treatment work zone when the surface treatment for the work to be treated on a carrier is finished. CONSTITUTION:Bumpers W as a plurality of works to be treated are treated while being carried on a carrying line in the automatic surface treatment method. Respective bumpers W are surface treated by guiding the bumpers by a frame 21 mounted movably along the carrying line on the base truck 3 and moving a gun unit 23 while moving synchronizingly with a carrier 14 supporting the bumpers W in the carrying direction at a given interval and a base truck 3 along the carrying line on the surface work zone. The synchronized movement of the base truck 3 together with the carrier 14 is released after completing the surface treatment, and the base truck is returned to the initial position in the surface work zone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved automatic surface treatment method and apparatus.

[0002]

2. Description of the Related Art Conventionally, in the case of automatically surface-treating an object to be processed which is transferred on a transfer line, for example, an actual Kaihei 1-1
As disclosed in Japanese Patent No. 673667, a gate-shaped frame is installed so as to straddle a transfer line, and a gun unit provided in the frame is moved in a transfer direction and a direction orthogonal to the transfer direction, thereby treating a workpiece. It is designed so that paint is sprayed onto the car body as an object.

[0003]

By the way, in the case of continuously surface-treating a plurality of objects to be processed, the shorter the processing interval between the objects to be processed is, the more efficient the work can be done. preferable. However, in this case, shortening the surface treatment time of the object to be treated has a limit because it causes a process failure, and therefore, it is necessary to convey the subsequent object to be treated to the surface treatment work area. Need to reduce time. And, in this case, it is necessary to make the conveying speed of the object being processed different from the conveying speed of the object being moved to the surface treatment work area.
There is a problem that the control system for controlling the transfer speed becomes complicated. In addition, the shorter the surface treatment work area, the smaller the space for the entire equipment, which is economical.

The present invention has been made in view of the above points, and an object of the present invention is to provide a frame, which is provided with a base carriage so as to be movable along a transfer line, and has surface treatment means, on the base carriage. Since it can be moved along the transfer line, the subsequent object to be processed can be quickly moved to the surface treatment work area with simple movement control, and the surface treatment can be performed efficiently to achieve a small space for the entire equipment. To do so.

[0005]

In order to achieve the above-mentioned object, the solution means of the present invention according to claim 1 is an automatic surface for automatically surface-treating a plurality of objects to be processed conveyed in a transfer line. As a processing method, first, while moving the surface treatment work area along the transfer line in synchronism with the carrier for supporting the respective objects to be processed at a predetermined interval in the transfer direction and the base car, on the base car. Each of the above-mentioned objects to be treated is surface-treated by moving the surface treatment means guided by a frame movably provided along the transfer line. Then, after the surface treatment is completed, the base carriage is returned to the initial position of the surface treatment work area by canceling the synchronous movement with the carrier.

In the above-mentioned case, the solution means of the present invention according to claim 2 performs the surface treatment in order from the object on the downstream side in the transport direction among the plurality of the objects to be treated supported by the carrier during the surface treatment. To do so.

According to a third aspect of the present invention, there is provided an automatic surface treatment apparatus for automatically surface-treating a plurality of objects to be treated which are conveyed on a conveyor line, wherein the respective objects to be treated are predetermined in a conveying direction. Carriers that support at intervals are provided so as to be movable along the transport line. Further, during surface treatment, a base carriage that moves in the surface treatment work area along the transfer line in synchronization with the carrier is provided. Further, a frame having a surface treatment means for surface-treating each object to be treated on the carrier is provided on the base carriage so as to be movable along a transport line. In addition, during the surface treatment, the base carriage is moved synchronously with the carrier, and after the surface treatment is finished, a movement means is provided for canceling the synchronous movement of the base carriage with the carrier and returning it to the initial position of the surface treatment work area. That is.

[0008]

With the above construction, in the present invention according to claims 1 and 3, the carrier on which a plurality of objects to be processed are supported at a predetermined interval in the conveying direction and the base carriage are surface-treated synchronously. Move the work area along the transport line. During this period, the surface treatment means moves along the frame movably provided on the base carriage along the transfer line to surface-treat each of the objects to be treated. At this time, the frame is moved one pitch at a time along the transfer line on the base carriage to subject the objects to be processed one by one. Then, when the surface treatment of all the objects to be treated on the carrier is completed, the base carriage is released from the synchronous movement with the carrier to return to the initial position of the surface treatment work area, and the surface treatment of the next object to be treated is performed. Prepare for

By moving the frame on the base carriage along the transfer line in this way, the subsequent object to be processed can be surface-treated. Therefore, the transfer speed of the carrier and the base carriage is determined depending on whether or not the transfer speed is being processed. Since there is no need to change the frame, the frame is moved so that the subsequent object to be processed quickly becomes the surface treatment work area by simple movement control.

Further, in the present invention according to claim 2, in the above case, the frame is moved by one pitch on the base carriage to the upstream side in the transport direction, and the surface treatment is performed in order from the workpiece on the downstream side in the transport direction. Therefore, the processing interval is shortened by the amount of movement of the frame to the upstream side in the transport direction, and the surface treatment is efficiently performed, so that the space of the entire facility can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic surface treatment method and apparatus according to embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an automatic coating apparatus A as an automatic surface treatment apparatus. In this embodiment, a plurality (two) of automobile bumpers W as objects to be processed which are transferred on a transfer line are automatically operated. The case where the coating is applied is shown below. In the figure, reference numerals 1 and 1 denote two carriage carriage rails laid on the floor 2 so as to extend along a conveyor line, and 3 denotes four carriage wheels 4, 1 ... A base trolley placed on the floor, a pinion 5 is attached to the center of the lower surface of the base trolley 3, and the pinion 5 extends along the transport line between the trolley transport rails 1 and 1 on the floor 2. It is meshed with the rack 6 laid like this. The pinion 5 is drivingly connected to a first drive motor 7 as a moving means installed in the base carriage 3 by means of sprockets 8 and 9, a chain 10, a shaft 11 and the like, and a rotation torque of the first drive motor 7 is generated. Is transmitted to the pinion 5, the base trolley 3 is moved along the transfer line in the coating work area as the surface treatment work area.

Further, in the upper center of the base carriage 3,
The two first carrier transport rails 12, 12 are arranged close to each other along the transport line, and the second carrier transport rails 13, 13 are provided below both the first carrier transport rails 12, 12. Are located close to each other. In addition, both the first carrier transfer rails 1
The rollers 1 and 2 each have eight carriers 14 that support the two bumpers W at a predetermined interval in the transport direction.
, 15, ... Are fitted together so as to be movable along the transfer line. Further, an engaging member 16 having a substantially V-shape extending downward is attached to the lower surface of the carrier 14, while the second carrier transport rails 1 are provided.
3 and 13 support the engaging member 17 extending upward 4
The individual rollers 18, 18, ... Are fitted together, and the engaging member 17 is connected to a chain 19 arranged below the engaging member 17 along the transport line. Then, the chain 19 is caused to travel to the downstream side (the right side in FIG. 2) in the transport direction F by the rotation drive of a drive motor (not shown), so that the engaging member 17 is engaged with the engaging member 16 on the carrier 14 side. The carrier 14 is transported downstream in the transport direction F.

Further, two frame transfer rails 20, 20 extending along the transfer line are laid on both sides of the upper surface of the base carriage 3, and the frame transfer rails 20, 20 are provided.
In FIG. 20, a gate-shaped frame 21 has fitting portions 21 at both lower ends.
A and 21a are fitted together and are arranged so as to be movable along the transfer line. Further, on the frame 21, a gun unit 23 as a surface treatment means provided with three coating guns 22, 22, 22 is arranged.
On the carrier 14 is moved by being guided by the frame 21 by driving a chain (not shown) by the rotation drive of the second drive motor 24 installed at the lower end of one side (right side in FIG. 1) of the frame 21. Each bumper W
It is designed to be painted. Further, a fluid pressure cylinder 25 is arranged on the base carriage 3 on one side (right side in FIG. 3) of the frame transfer rails 20, 20. The tip of the piston rod 25a of the fluid pressure cylinder 25 is fitted to the frame 21. The frame 21 is connected to the portion 21a and is moved by one pitch to the upstream side (left side in FIG. 2) in the transport direction F by the expansion operation of the fluid pressure cylinder 25 so as to be positioned above the bumper W on the upstream side in the transport direction F. On the other hand, the contraction operation of the fluid pressure cylinder 25 causes the downstream side in the transport direction F (see FIG.
It is configured to be moved one pitch to the right side) and to be positioned above the bumper W on the downstream side in the transport direction F.

At the time of coating, the base carriage 3 is driven by the first drive motor 7, for example, in the forward direction to drive the chain 1
The engaging members 16 and 17 are engaged with each other by driving 9 to move the carrier 14 synchronously to the downstream side in the transport direction F together with the moving carrier 14, and after the coating is finished, the base carriage 3 is driven by, for example, reverse rotation of the first drive motor 7. Release the synchronous movement of the carrier 14 on the downstream side in the transport direction, that is, transport direction F
Is moved to the upstream side to be returned to the initial position of the coating work area as the surface treatment work area.

Next, the procedure for painting the bumper W by the automatic painting apparatus A constructed as described above will be explained.

First, as shown in FIG. 4 (a), the carrier 14 supporting the two bumpers W, W is engaged with the engaging members 16 and 17 by driving the chain 19 from the state of the phantom line for coating. Move to the initial position of the work area (solid line). At this time, the base carriage 3 is located at the initial position of the coating work area, and the frame 21 is on standby on the downstream side in the transport direction F (right side in FIG. 4A).

Next, as shown in FIG. 4B, the base carriage 3 is synchronized with the carrier 14 by the forward drive of the first drive motor 7, for example, and the coating work area is conveyed along the conveying line in the conveying direction F. To the downstream side of. During this time,
The second drive motor 24 is driven so that the gun unit 23 is guided and moved by the frame 21 to coat the bumper W on the downstream side in the transport direction F, and when the coating is completed, the second drive motor 24 is stopped.

Thereafter, as shown in FIG. 4 (c), while continuing the synchronous movement of the carrier 14 and the base carriage 3, the frame 21 is moved to the upstream side in the conveying direction F by the extension operation of the fluid pressure cylinder 25. As shown in the left side of FIG. 4C, the rearward movement is performed by one pitch, and the second drive motor 24 is driven to move the gun unit 23 to the frame 21 as in the above case.
The bumper W on the upstream side in the transport direction is painted, and the second drive motor 24 is stopped when the painting is completed.

In this way, the above two bumpers W, W
4 (d), the driving of the first drive motor 7 is stopped to release the synchronous movement of the base carriage 3 and the carrier 14 to the downstream side in the transport direction F, as shown in FIG. 4 (d).
That is, the carrier 14 is moved to the downstream side in the transport direction F by the drive of the chain 19 to transport the painted bumpers W, W to the next work station, while the frame 21 is transported by the contraction operation of the fluid pressure cylinder 25. In addition to moving and returning to the original position on the downstream side in the direction F, the base carriage 3 is returned to the initial position of the coating work area in the following carrier 14 by the reverse operation of the first drive motor 7, for the next coating. Prepare

As described above, in this embodiment, the frame 21
By moving the base truck 3 on the upstream side in the transport direction F, the subsequent bumper W can be coated,
It is not necessary to change the transfer speed of the carrier 14 and the base trolley 3 depending on whether or not processing is being performed, and thus the subsequent bumper W can be swiftly moved by simple movement control, that is, movement control of the frame 21 by the fluid pressure cylinder 25. It can be used as a painting work area, and the frame 21
The processing time is shortened by the amount moved to the upstream side in the transport direction, so that the coating can be efficiently performed, and the space for the entire facility can be reduced.

In the above embodiment, the case where the two bumpers W, W are supported on the carrier 14 has been shown, but the present invention is not limited to this and, for example, three or more bumpers W may be provided.
The object to be processed is not limited to the bumper W and may be, for example, an air spoiler.

In the above embodiment, the automatic coating apparatus A is shown as the automatic surface treatment apparatus, but the present invention is not limited to this and can be applied to the case of cleaning an object to be treated with a cleaning agent or air. is there.

[0024]

As described above, according to the present invention as set forth in claims 1 and 3, a carrier and a base trolley in which a plurality of objects to be processed are supported at predetermined intervals in the carrying direction are provided. The surface treatment work area is moved along the transfer line in synchronization with each other, and during this time, the surface treatment means is moved by being guided by a frame movably provided on the base carriage along the transfer line. The treated product is surface-treated.
At this time, the frame is moved along the transport line by one pitch on the base trolley to perform the surface treatment of the objects to be treated one by one, and when the surface treatment of all the objects to be treated on the carrier is completed, The base carriage is released from the synchronous movement with the carrier and returned to the initial position of the surface treatment work area to prepare for the next surface treatment of the object to be treated. Therefore, it is not necessary to change the transfer speeds of the carrier and the base trolley depending on whether or not processing is being performed, and the subsequent object to be processed can be swiftly made into the surface processing work area by simple movement control.

Further, in the present invention according to claim 2, in the above case, the frame is moved one pitch on the base carriage to the upstream side in the transport direction, and the surface treatment is performed in order from the downstream object in the transport direction. Therefore, the processing interval is shortened by the amount of movement of the frame to the upstream side in the transport direction, which allows the surface treatment to be performed efficiently and the space for the entire equipment to be reduced.

[Brief description of drawings]

FIG. 1 is a front view of an automatic coating device.

FIG. 2 is a side view of an automatic coating device.

FIG. 3 is a plan view of an automatic coating device.

FIG. 4 (a) is a process diagram of loading the bumper onto the base carriage. (B) It is a process drawing of painting the bumper on the downstream side in the transport direction. (C) It is a process drawing of painting the bumper on the upstream side in the transport direction. (D) It is a process drawing of returning the base carriage to the initial position of the painting work area.

[Explanation of symbols]

 3 ... Base carriage 7 ... First drive motor (moving means) 14 ... Carrier 21 ... Frame 23 ... Gun unit (surface treatment means) A ... Automatic coating device (automatic surface treatment device) W ... Bumper (object to be treated)

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[Procedure amendment]

[Submission date] July 2, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 4

[Correction method] Change

[Correction content]

FIG. 4 is a process diagram showing a bumper coating procedure.

Claims (3)

[Claims] 1. An automatic surface treatment method for automatically surface-treating a plurality of objects to be treated which are conveyed on a conveying line.
Move along the transfer line on the base carriage while moving the surface treatment work area along the transfer line in synchronism with the carrier that supports the above-mentioned objects to be processed at predetermined intervals and the base carriage. Surface treatment is performed by moving the surface treatment means guided by a frame that can be provided, and after completion of the surface treatment, the base carriage is released from the synchronous movement with the carrier to perform the surface treatment work area. An automatic surface treatment method characterized by returning to the initial position. 2. The automatic surface treatment method according to claim 1, wherein during the surface treatment, the surface treatment is carried out in order from the workpiece on the downstream side in the transport direction among the plurality of workpieces supported by the carrier. 3. An automatic surface treatment apparatus for automatically surface-treating a plurality of objects to be treated which are conveyed on a conveyor line,
A carrier provided so as to be movable along a transfer line, and supporting each of the objects to be processed at a predetermined interval in the transfer direction,
At the time of surface treatment, a base carriage that moves in a surface treatment work area along a transfer line in synchronization with the carrier, and an object to be treated provided on the base carriage so as to be movable along the transfer line. While the surface treatment is performed, the base carriage is moved synchronously with the carrier during the surface treatment, and after the surface treatment is completed, the base carriage is released from the synchronous movement with the carrier to initialize the surface treatment work area. An automatic surface treatment apparatus comprising a moving means for returning to a position.