JPH07299704A - Automatic processing facility - Google Patents

Abstract

PURPOSE:To enable the position of each carrying truck in a running route to be recognized easily, in an automatic processing facility in which plural precessing devices are arranged along a loop shape running route, a carrying truck holding a work is moved in the prescribed direction of the running route and the processing (machining and painting, etc.) of the work is carried out sequentially and automatically by each processing device. CONSTITUTION:Many independent communication units 9a, 9b, 9c, 9d are arranged along a running route 1 and the position of each carrying truck 3 is recognized by providing such constitution that a carrying truck 3 may be communicated with a controller through the communication units 9a, 9b, 9c, 9d with which the carrying truck 3 is in contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic processing facility for high-mix low-volume production which is configured to automatically perform various processes such as machining, assembly and painting.

[0002]

2. Description of the Related Art As an automatic processing facility as described above, there is an automatic coating facility for coating various works. An example of the automatic coating facility is shown in FIG. In the configuration of FIG. 23, a loop-shaped traveling route 71 is installed for an automatic painting facility,
A plurality of transport carriages 73 capable of traveling and stopping are arranged in a traveling path 71 in a predetermined direction (clockwise direction in the drawing of FIG. 23). A first transfer unit 74 that transfers the unpainted work W1 to the transport carriage 73, a plurality of coating devices 75 (corresponding to processing devices) for undercoating and topcoating, and a second transfer that receives the coated work W2 from the transport carriage 73. Part 76 traveling route 71
Are arranged at a predetermined interval along the line W, and the coated work W2 coming out from the second transfer section 76 is attached to the assembly line 72.
A storage unit 77 for temporary storage is installed in order to supply to

With the above construction, the work W1 before painting, which has undergone machining, welding and shot blasting, is
It is sequentially carried into the delivery section 74 and temporarily stored, and the first
The work W is placed on the empty carriage 73 that has entered the delivery section 74.
1 is put. Next, the carriage 73 carrying the work W1
However, each coating device 75 starts traveling along the traveling route 71.
Then, the coating devices 75 are operated and coating of the work W1 is performed during this stop. The painting is completed as described above, and the carriage 73 is set to the second position.
When reaching the delivery unit 76, the coated work W2 is unloaded from the transport carriage 73, and the work W2 is sent to the storage unit 77 and temporarily stored. Then, the coated work W2 is sequentially supplied from the storage unit 77 to each predetermined position of the assembly line 72.

[0004]

In the automatic processing facility shown in FIG. 23, when a large number of carrier vehicles travel on one loop-shaped traveling route, one carrier vehicle may be processed due to the length of processing time in each processor. In some cases, the subsequent carrier truck may be too close. In this case, a distance sensor such as an ultrasonic type is provided at the front end of the transport vehicle so that the subsequent transport vehicle automatically stops when the subsequent transport vehicle comes too close to the preceding transport vehicle. It is possible to configure.

However, with this configuration, only the relationship between the two carriages, that is, the preceding carriage and the succeeding carriage, can be recognized, so that the positional relationship between the carriages can be recognized in the entire traveling route. There is room for improvement. It is an object of the present invention to configure an automatic processing facility so that the positional relationship of each carriage on a traveling route can be recognized.

[0006]

A feature of the present invention is that the automatic processing facility as described above is configured as follows. That is, it is provided with a loop-shaped travel route and a plurality of transport carriages capable of running and stopping along the travel route in a predetermined direction and capable of holding a work, and temporarily stores a plurality of different types of work before processing to transport the carriage. A first delivery unit for delivering to the workpiece, a plurality of processing devices for the work, and a second delivery unit for receiving the processed work from the transport carriage in this order at predetermined intervals along the loop-shaped travel route. A plurality of communication units each having a predetermined length independent of each other are arranged along the travel route, and each transport carriage is provided with a contactor that comes into contact with the communication units while traveling along the travel route. Is provided with a control device connected to each of the above, and each transport carriage and the control device communicate with each other via the communication portion with which the contact of each transport carriage contacts.

[0007]

When the present invention is constructed as shown in FIG.
As shown in FIG. 7, a large number of communication units 9 (9a, 9b, 9c, 9 in FIG. 7) having a predetermined length and independent from each other are provided along the travel route 1.
When the carrier 3 travels along the travel route 1, the contactor of the carrier 3 comes into contact with the communication unit 9 so that the controller 44 for the carrier 3 and the fixed unit, 45, 46, 47, 48, 49, 50 communicate.

As a result, the communication unit 9 along the travel route 1
Which of the communication units 9 is used to transfer the carrier vehicle 3 and the control device 4
It is possible to independently recognize at which position of the traveling route 1 the transport vehicle 3 is located by detecting whether the transport vehicles 3 to 4 are communicating with each other independently of the other transport vehicles 3. By recognizing the positions of the transport vehicles 3 in this way, the positional relationship between the transport vehicles 3 can be recognized.

As described above, if the positions of the respective carrier vehicles are recognized by the communication between the carrier vehicles and the control device, when the succeeding carrier vehicles come too close to the preceding carrier vehicles, An operation (a stop signal from the control device or the judgment of the carrier vehicle itself) to automatically stop the carrier vehicle can be easily performed. And, it is possible to easily recognize the stagnation condition of the transport vehicle along the entire traveling route (which part of the traveling route the transport vehicle stagnates and which portion of the traveling route the transport vehicle does not stagnate). By controlling the stop and traveling of the carrier according to the stagnation situation,
It is possible to smoothly run each carrier truck.

When it is necessary to change the travel route or add or remove the travel route in the automatic processing facility of the present invention,
By simply rearranging the communication units according to the traveling route and increasing or decreasing the communication units, it is possible to easily cope with the change of the traveling route while maintaining the communication relationship between the carrier vehicle and the control device.

[0011]

As described above, by providing an independent communication unit along the traveling route in the automatic processing facility, and by configuring the transport carriage and the control unit of the fixed unit to communicate via the communication unit, By recognizing the position of the carrier truck, it is possible to easily control the entire carriage carriage on the travel route and control the traveling, and an automatic processing facility with a high control function is obtained. In addition, since the traveling route can be easily changed or added or removed by rearranging the communication units, the automatic processing facility has high flexibility and flexibility.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. (1) This embodiment shows a case where the present invention is applied to high-mix low-volume production of construction machinery such as a backhoe and a wheel loader. First, an automatic coating facility (an example of an automatic processing facility) and an assembly line 2 are shown. The whole will be described. As shown in FIG. 1, a traveling rail 1 (corresponding to a traveling route) of an automatic painting facility is formed in a large loop shape when seen in a plan view, and as shown in FIG. degree)
The rails for power supply 8 and the rails 9 for communication (corresponding to the communication section) for the carriage 3 to be described later (see FIG. 3) are installed in parallel on both left and right sides of the traveling rail 1. There is. A platform 10 on which a worker can walk is provided between the traveling rail 1 and the floor surface G over substantially the entire lower region of the traveling rail 1.

As shown in FIG. 1, the traveling rail 1, the power supply rail 8 and the communication rail 9 include a hoisting area A1, an undercoat area A2, an overcoat area A3, a drying area A4, a waiting area A5 and a first supply area A6. And a second supply area A7, and a plurality of transport carriages 3 are traveling on the traveling rail 1 counterclockwise in the drawing.

As shown in FIGS. 4 and 1, the lifting area A1
, A teaching device 4 for teaching the basic data D, which will be described later, to the transport carriage 3 is installed on the floor surface G, and the work W1 is transported by the teaching device 4.
The first suspension part 5 (corresponding to the first transfer part), the second suspension part 6 (corresponding to the first transfer part) and the third suspension part 7 (corresponding to the first transfer part) for suspending on the floor G Is formed in. As shown in FIGS. 1 and 5, in the undercoat area A2, a preheating device 11 (corresponding to a processing device) for the work W1 before coating, a first undercoat device 12 (corresponding to a processing device) equipped with an automatic coating robot, A second undercoating device 13 (corresponding to a processing device) equipped with an automatic painting robot, a first undercoating correction unit 14 in which an operator artificially undercoats, a second undercoating correction unit 15 in which an operator artificially undercoats, And the undercoat drying device 16 (corresponding to a processing device) for drying the undercoat is the platform 10
It is installed in.

As shown in FIGS. 1 and 5, the overcoat area A3
Includes a first topcoating device 17 (corresponding to a processing device) equipped with an automatic coating robot, a second topcoating device 18 (corresponding to a processing device) equipped with an automatic coating robot, and a first topcoating device that a worker artificially topcoats. A topcoat correction unit 19 and a second topcoat correction unit 20 that an operator artificially topcoats are installed on the platform 10.

As shown in FIGS. 1 and 6, the drying area A4
Includes a maintenance unit 21 for repair and adjustment of the carriage 3.
Top coat drying device 22 for drying top coat (corresponding to processing device)
Are installed on the platform 10. A maintenance rail 21a is installed in the maintenance unit 21 in parallel with the traveling rail 2, and a part of the traveling rail 1 can be moved in parallel to be connected to the maintenance rail 21a. Accordingly, when carrying out repair and adjustment of the transport carriage 3, with the transport carriage 3 placed on a part of the traveling rail 1, a part of the traveling rail 1 is translated and connected to the maintenance rail 21a. The carriage 3 is moved to 21a for repair and adjustment.

As shown in FIGS. 1 and 7, the waiting area A
Nothing is installed in 5 especially. As shown in FIGS. 1 and 8, in the first supply area A6, the first, second, third, fourth and fifth supply sections 23, 24, 25, 26 for lowering the coated work W2 from the transport carriage 3 are provided. 27 (corresponding to the second transfer part) is formed on the floor surface G, and similarly in the second supply area A7, the first, second, third, fourth and fifth supply parts 23, 24, 2 are provided.
5, 26, 27 (corresponding to the second transfer portion) are formed on the floor surface G. Then, the first and second supply areas A6, A
A linear assembly line 2 is installed in parallel along 7.

(2) Next, the transport carriage 3 that travels on the travel rail 1 while holding the work W1 will be described. As shown in FIGS. 2 and 3, a wheel frame 35 is provided in front of and behind the main frame 28, and a wheel 29 and a motor 30 for driving the wheel 29 are provided in the wheel frame 35. The entire carriage 3 is suspended from the traveling rail 1 and supported by the traveling rail 1. A control device 31 is fixed to the center of the main frame 28, and a pair of hoists 32 is fixed to the front and rear of the main frame 28. A heat insulating plate 33 is fixed to the lower surface of the control device 31, and a chain 32a of the front and rear hoists 32 is fixed. The suspension frame 34 for the work W1 is connected over the entire length.

As shown in FIG. 3, front and rear wheel frames 3
5, the support frames 36 extend in opposite directions from each other,
A contact 37 is fixed to each of the front and rear support frames 36, and the front and rear contacts 37 are in contact with the power supply rail 8 and the communication rail 9. As shown in FIG. 2, an auxiliary carriage 38 traveling on the traveling rail 1 is arranged on the rear side of the transport carriage 3, and the main frame 28 of the transport carriage 3 and the auxiliary carriage 3 are arranged.
8 and 8 are connected by a connecting rod 39. In addition, a contact-type stop switch 40 for preventing a collision with the preceding carriage 3 is provided on the front wheel frame 35 of the carriage 3.

(3) Next, the control device 4 on the side of the traveling rail 1
Communication between 4, 45, 46, 47, 49, 50 and the carriage 3 will be described. As shown in FIG. 1, the traveling rail 1,
The power rail 8 and the communication rail 9 are the lifting area A1.
Although it is apparently divided into the second supply area A7, the traveling rail 1 and the power supply rail 8 are continuous over the suspension area A1 to the second supply area A7, and the carrier 3 is the power supply rail. Power is constantly received from the power source 8 through the contactor 37.

On the other hand, as shown in FIG. 1, the communication rail 9 is completely separated at each boundary of the suspension area A1 to the second supply area A7. In the suspension area A1 to the second supply area A7, the communication rails 9 are completely separated into a plurality of pieces (communication rails 9a to 9 in FIG. 7).
(See d), the length of one communication rail 9 is set so that one carrier 3 can be inserted therein or slightly longer than this. As shown in FIG. 9, in each of the suspension area A1 to the second supply area A7, the control devices 44, 45, 46, 47,
48, 49, 50 are installed, and lifting area A1
Each of the communication rails 9 and each of the control devices 44 to 50 separated in the second supply area A7 are connected to the cable 5
Connected by 1.

Thus, for example, when paying attention to the suspension area A1, each communication rail 9 in the suspension area A1 is connected by the cable 51 only to the control device 44 in the suspension area A1. Each communication rail 9 in the suspension area A1 is not connected to other control devices 45 to 50. Therefore, the control device 44 of the hoisting area A1 communicates with the control device 31 of the carriage 3 in the hoisting area A1 via the contact 37 and the communication rail 9, as will be described later. The control device 44 of A1 does not communicate with the control device 31 of the carriage 3 other than the lifting area A1.
Then, the control device 44 in the hoisting area A1 recognizes which communication rail 9 in the hoisting area A1 the transport carriage 3 is in by the above-mentioned communication. The above-described communication configuration is similarly provided for the control devices 45 to 50 in the undercoat area A2 to the second supply area A7 other than the lifting area A1.

As shown in FIG. 9, control devices 44, 45, 46, 49 for the hoisting area A1, the undercoat area A2, the overcoat area A3, the first supply area A6 and the second supply area A7.
A manual box 43 is connected to the manual box 50. The manual box 43 has a stop button (not shown) and a start button (not shown) that allow the carrier vehicle 3 to be manually stopped and started. The hoist 32 is provided with an ascending button (not shown) and a descending button (not shown) capable of manually ascending and descending. In addition to the stop button to the down button described above, the manual box 43 in the hoisting area A1 also has a delete button (not shown) for the basic data D described later.
Is provided.

(4) Next, with respect to the basic flow of running and stopping of the carriage 3 in the lifting area A1 to the second supply area A7, as shown in FIGS.
5 will be described as a representative. When a plurality of transport carriages 3 are traveling in the standby area A5, first, as described in (3) above, the control device 48 of the standby area A5 controls the control device 31 of each transport carriage 3 in the standby area A5. It constantly confirms which communication rail 9 of each carrier vehicle 3 exists in the standby area A5 by communicating with (step S101).

As shown in FIG. 7, the transport carriages 3 are located on one communication rail 9 (9a) in the state where a plurality of transport carriages 3 are simultaneously traveling in the waiting area A5. In the state, the succeeding transport vehicle 3 enters the communication rail 9 (9b) immediately before, and the transport vehicle 3 is positioned on each of the adjacent communication rails 9 (9a) (9b). (Step S102). In such a state, the deceleration signal from the control device 48 causes the succeeding carriage 3 to move to the immediately preceding communication rail 9 (9
The deceleration is started immediately after entering the b) (step S103), and during this deceleration, the carrier vehicle 3 of the front side communication rail 9 (9a) moves to the communication rail 9 (9).
When it is separated from a) to the right of the paper surface of FIG. 7 (step S10)
4) Then, the carrier vehicle 3 on the rear communication rail 9 (9b) returns to the original speed (step S105) and enters the front communication rail 9 (9a).

On the contrary, even if the succeeding carrier 3 is decelerated by the communication rail 9 (9b) one before, the carrier 3 of the front communication rail 9 (9a) is communicated by the communication rail 9 (9a). 7 to the right side of the paper surface of FIG. 7 (step S104),
In response to a stop signal from the control device 48, the carriage 3 stops at a predetermined position of a limit switch (not shown) on the rear communication rail 9 (9b) (step S106). After this, when the carrier 3 of the front communication rail 9 (9a) moves away from the communication rail 9 (9a) to the right in the drawing of FIG. 7 (step S107), the rear communication rail 9 (9b) The carrier vehicle 3 starts (step S108). As described above, one of the communication rails 9 (9a) and (9b) does not have the carrier truck 3 or only one carrier truck 3 exists, so that one communication rail 9 (9a) is provided. (9
The configuration is such that no two or more carrier vehicles 3 are present in b).

As shown in FIG. 7, in the first supply area A6 on the front side of the standby area A5, the first communication rail 9 is used.
Whether or not the carrier 3 is present in (9d) is constantly detected by the control device 49 in the first supply area A6, and the first communication rail 9 (9 in the first supply area A6) is detected.
When the carriage 3 is present in d), the presence signal B1 is sent from the control device 49 in the first supply area A6 to the control device 48 in the standby area A5 as shown in FIG.

Therefore, as shown in FIG. 7, the waiting area A5
When the carriage 3 reaches the last communication rail 9 (9c) in step S109 (step S109), the presence signal B1 is not sent from the control device 49 in the first supply area A6 (step S110), the standby area. The carrier vehicle 3 on the last communication rail 9 (9c) of A5 travels as it is and enters the first communication rail 9 (9d) of the first supply area A6 (step S112).

On the contrary, when the carriage 3 reaches the last communication rail 9 (9c) in the waiting area A5 (step S1)
09), if the presence signal B1 is sent from the control device 49 of the first supply area A6 (step S110), the carrier vehicle 3 moves the last communication rail 9 (9 of the standby area A5).
It pauses in c) (step S111). When the presence signal B1 disappears in this state (step S11)
0), the last communication rail 9 (9c) in the waiting area A5
Of the carrier 3 starts and enters the first communication rail 9 (9d) of the first supply area A6 (step S11).
2).

As described above, based on the communication between the control device 31 and the control device 48 of the carrier vehicle 3, there is no carrier vehicle 3 in one communication rail 9, or only one carrier vehicle 3 is present. Although it is possible to exist, it is assumed that, for example, the carrier 3 of the communication rail 9 (9b) in FIG. 7 travels and tries to enter the front communication rail 9 (9a). In such a case, the stop switch 40 (see FIG. 2) of the transport carriage 3 on the rear communication rail 9 (9b) causes the auxiliary carriage 38 of the transport carriage 3 on the front communication rail 9 (9a).
(See FIG. 2) (step S113). Then, without passing through the control device 48 in the waiting area A5, the control device 31 of the transport vehicle 3 on the rear communication rail 9 (9b) causes the transport vehicle 3 to make an emergency stop (step S1).
14).

As described above, the basic flow of running and stopping of the carrier vehicle 3 has been described by representing the state in the waiting area A5. However, the control shown in FIG. 11 is performed in the lifting area A1. , Undercoat area A2, overcoat area A3, dry area A4, first supply area A6 and second supply area A
The same is done in No. 6. As a result, as shown in FIG. 1, the lifting area A1 to the second supply area A7 are independent of each other, and as shown in FIG.
The supply area A7 and the control devices 44 to 50 are formed as one independent block. Then, as shown in FIG. 9, the carrier 3 is mounted on the first communication rail 9 (9d).
The presence signal B1 that the presence signal B1 is present is only sent from the front side control devices 44 to 50 to the rear side control devices 44 to 50, and the presence signal B1 is present between the respective control devices 44 to 50.
Communication other than is not performed.

(5) Next, the flow of the work W1 carried by the carrier 3 and painting will be described. The position of the teaching device 4 (the position of the communication rail 9) in the lifting area A1 of FIG.
Process in the undercoat area A2, process in the overcoat area A3, process in the dry area A4, process in the waiting area A5, and processes in the first and second supply areas A6 and A7.

First, the process in the hoisting area A1 of the carriage 3 will be described with reference to FIG. 1 and 4
Machining, welding and shot blasting,
A variety of unpainted works W1 (for example, a backhoe swivel, a truck frame, a front body and a rear body of a wheel loader, etc.) whose masking has been completed on a portion which should not be coated are moved by the carriage 42 to the first area of the suspension area A1. 1 to 3
It is carried near the hanging parts 5-7.

As shown in FIG. 8 which will be described later, the work W after painting
2 the supply timing to the assembly line 2, and a predetermined number of works W1 to be painted with the same paint color so that a predetermined number of works W1 enter the topcoat area A3.
It is required in advance how to paint 1 and until the empty carrier 3 comes to the position of the teaching device 4 (the position of the communication rail 9 (9d) in FIG. 4). Then, basic data D corresponding to one work W1 is prepared (step S1).

This basic data D is, as shown in FIG.
The first to the fifth of the suspension part number D1, the first and the second supply areas A6 and A7 which one of the three parts of the first to the third suspension parts 5 to 7 of the suspension area A1 stops. Supply unit 2
Which one or 2 or 3 out of 10 from 3 to 27
Supply section number D2 that says whether to stop at a location, first undercoat number D3 for the first undercoat apparatus 12 (including a state where the first undercoat apparatus 12 passes through without coating), second undercoat apparatus 13
2nd undercoat number D4 (including the state of passing through without coating with the 2nd undercoat device 13), 1st topcoat number D5 for the 1st topcoat device 17 (without coating with the 1st topcoat device 17) For the first and second top coating devices 17, 18 (including the state of passing by), the second top coating number D6 for the second top coating device 18 (including the state of passing without coating with the second top coating device 18) Paint color number D7, first and second undercoat correction units 14, 15,
Undercoat drying device 16, first and second overcoat correction units 19 and 2
0, the work stop time D8 for the topcoat drying device 22, the first and second bottomcoat devices 12, 13, the first and second topcoat devices 17,
It is a workpiece lifting amount D9 for 18.

As a result, the first or second supply area A
One of the carriages 3 having the work W2 after coating 6 and A7 lowered into the hoisting area A1 and the position of the teaching device 4 (see FIG. 4).
When the vehicle is stopped at the position of the communication rail 9 (9d)), the basic data D (see FIG. 10) corresponding to the work W1 to be hung on the carrier 3 is transferred from the teaching device 4 to the controller 31 of the carrier 3. Is taught (step S2).

In this way, the basic data D is transferred to the carrier 3
When the control device 31 of FIG. 4 stores, the control device 44 of the hoisting area A1 and the control device 31 of the transport vehicle 3 start communication (step S3), the transport vehicle 3 starts, and as shown in FIG. The transport carriage 3 stops at one position (a predetermined position of a limit switch (not shown)) of the first to third suspension parts 5 to 7 corresponding to the suspension part number D1 of the data D (step S4). As a result, the shutter 10a of the platform 10 on the lower side of the carriage 3 automatically opens (step S5), and based on the stored basic data D, what kind of work W1 is hung on the carriage 3. Whether or not it should be displayed on the display panel 41 (step S6).

As a result, the worker standing on the first to third hanging parts 5 to 7 operates the manual box 43 to lower the hanging frame 34 of the carrier 3 (step S8), and the worker before painting. Work W1 from the trolley 42 to suspend frame 3
4 (step S9). In this case, in the large work W1, only one of the works W1 may be hung in the hanging frame 34, and in the small work W1, a plurality of works W1 may be hung in the hanging frame 34. The work W1 having the content displayed on the display panel 41 must be properly hung on the hanging frame 34.

When the suspending of the work W1 is completed, the operator operates the manual box 43 to raise the suspending frame 34 (step S10) and presses the start button of the manual box 43 which means the completion of the suspending work. (Step S11). As a result, the shutter 10a is automatically closed (step S12), and the carrier vehicle 3 starts (step S13). In this case, if the suspension frame 34 has not reached the upper limit (step S11a), the hoist 32 automatically operates before the shutter 10a is closed and the suspension frame 34 rises to the upper limit (step S11b). , The shutter 10a is closed (step S12), and the carriage 3 starts (step S1).
3).

Even if a display is made on the display panel 41 in step S6, the work W1 corresponding to this display is the first
~ If it has not reached the third suspension parts 5 to 7 (step S7), the operator does not perform the descending operation of the suspension frame 34, suspends nothing on the suspension frame 34 of the transport carriage 3, and moves the manual box 43 of the manual box 43. The delete button is pressed to operate (step S14). As a result, all the basic data D stored in the control device 31 of the transport vehicle 3 is erased, and in the state where nothing is suspended on the suspension frame 34 of the transport vehicle 3, the operator pushes the start button of the manual box 43. When is pressed (step S11), the shutter 10a is automatically closed (step S12), and the empty carrier 3 is started (step S13). As described above, the lifting area A
Since the process in step 1 is completed, the control of the previous item (4) (see steps S101 to S114 in FIG. 11) is also performed concurrently with the flow of steps S1 to S14 in FIG.

(6) Next, the undercoat area A2 of the carriage 3
The process in step 1 will be described with reference to FIGS. The carrier 3 moves from the lifting area A1 to the undercoat area A2.
When entering, the control device 31 of the carrier vehicle 3 is moved to the lifting area A1.
Communication with the control device 44 of the undercoat area A2 shown in FIG. 9 is started (step S).
15). Then, when the transport carriage 3 reaches the preheating device 11, the hanging frame 3 suspended from the transport carriage 3 is reached.
4 and the work W1 only enter the preheating device 11, and the carriage 3 is at a predetermined position of the limit switch (not shown) of each communication rail 9 within the range of the preheating device 11.
The operation of stopping for the work stop time D8 (see FIG. 10) of the basic data D and moving to the next communication rail 9 is repeated (step S17).

Next, the carriage 3 is used as the first undercoating device 12 of FIG.
When entering the communication rail 9 of this, at this moment, the carrier 3
From the controller 31 of No. 1 to the controller 45 of the undercoat area A2,
The first undercoat number D3 (see FIG. 10) of the basic data D is transmitted (step S18). In this case, the first undercoat number D
3 is the first undercoating device 1 without coating with the first undercoating device 12.
If it is in a state of passing 2 through, the process proceeds from step S19 to the lower side of step S25, and the carriage 3 continues to pass without stopping at the first undercoating device 12.

On the contrary, the first undercoat number D3 is the first undercoat device 1
If the coating is to be performed in step 2 (step S19), the transport carriage 3 decelerates while the transport carriage 3 stops at a predetermined position of the limit switch of the first undercoating device 12 (step S2).
0), the work W1 enters the first undercoat device 12. In this case, the first undercoating device 12 stores a coating pattern program of a spray gun (not shown) corresponding to various works W1 and sends it from the control device 31 of the carrier vehicle 3 to the control device 45 of the undercoating area A2. First base coat number D3
Is sent as an operation command from the control device 45 of the undercoat area A2 to the first undercoat device 12.
2 is a coating pattern program corresponding to the first undercoat number D3, and starts coating the work W1 (step S2).
1).

When the work W1 to be hung by the carrier 3 is large or has a complicated shape when coating is performed by the first undercoating device 12, a part of the work W1 which is difficult for the spray gun of the first undercoating device 12 to reach occurs. Come on. In this case, the carriage 3 is interlocked with the operation of the spray gun of the first undercoat device 12.
Hoist 32 is the basic work D work lift amount D9
(See FIG. 10) automatically operates in the range of the work W1
Is automatically moved up and down in the first undercoat device 12 (step S22). In this way, the portion of the work W1 that is difficult for the spray gun of the first undercoat device 12 to reach is reduced. When the coating by the first undercoating device 12 is completed as described above (step S23), the end signal is transmitted from the control device 45 of the undercoating area A2 to the control device 31 of the transport carriage 3 (step S24). As a result, the carriage 3 starts to move out of the range of the first undercoat device 12 (step S25).

Next, the carriage 3 is used as the second undercoating device 1 of FIG.
When reaching the communication rail 9 of No. 3, as shown in steps S26 to S27, the second undercoat number D4 of the basic data D is transferred from the control device 31 of the carrier vehicle 3 to the control device 45 of the undercoat area A2 in the same manner as described above. (See FIG. 10) is transmitted, and the transport carriage 3 passes through the second undercoating device 13 without stopping, or the transport carriage 3 stops at a predetermined position of the limit switch of the second undercoating device 13, and the second The undercoat device 13 starts the coating of the work W1 with the coating pattern program corresponding to the second undercoat number D4. And the second undercoat device 1
3 is applied, the hoist 32 of the carrier 3 interlocks with the operation of the spray gun of the second undercoating device 13 to apply the work W1 to the second undercoating device 13 within the range of the work lifting amount D9 of the basic data D. It is automatically moved up and down in the inside, and when the coating by the second undercoating device 13 is completed, the undercoating area A2
An end signal is transmitted from the control device 45 of the above to the control device 31 of the transport carriage 3, the transport carriage 3 starts, and the second undercoating device 13
Go out of range.

Next, when the carriage 3 reaches the first undercoat correction section 14 in FIG. 1 and the work W1 enters the first undercoat correction section 14, the limit switch (not shown) of the first undercoat correction section 14 is entered. The carriage 3 stops at a predetermined position in () while decelerating (step S28), and the timer starts counting the work stop time D8 of the basic data D (step S29). During this period, the operator in the first undercoat correction unit 14 corrects the undercoat of the work W1, and if there is a portion where the spray gun is hard to reach the work W1, the first
The hoist 32 of the carrier 3 is moved up and down by the manual box 43 arranged in the undercoat correction unit 14 to set the work W1 at an appropriate height (step S30). Then, when the counting of the work stop time D8 of the basic data D is completed, the transport carriage 3 is automatically started from the first undercoat correction unit 14 (steps S33 and S36).

In this case, if the undercoating correction is completed before the work stop time D8 elapses, the worker pushes the start button of the manual box 43, so that the carrier truck can be operated before the work stop time D8 elapses. 3 can be started (steps S32 and S36). On the other hand, if the undercoat correction cannot be completed before the work stop time D8 elapses, the worker presses the stop button of the manual box 43 in advance, so that the carrier truck 3 can be operated regardless of the work stop time D8. Can be stopped (steps S31, S34). When the correction of the undercoat is completed, the operator can start the transport carriage 3 by pressing the start button of the manual box 43 (steps S35 and S36). When the carriage 3 starts up as described above, if the suspension frame 34 has not reached the upper limit (step S35a), the hoist 32 automatically operates and the suspension frame 34 moves up to the upper limit. (Step S35b), the carriage 3 is configured to start (Step S36).

Next, when the carriage 3 reaches the second undercoat correction unit 15 in FIG. 1 and the work W1 enters the second undercoat correction unit 15, as shown in steps S37 to S38, the first undercoat correction is performed. The same work as in the case of section 14 is performed. Then, when the transport carriage 3 exiting from the second undercoat correction unit 15 reaches the undercoat drying apparatus 16 shown in FIG. 1, the transport carriage 3 limits the communication rails 9 within the range of the undercoat drying apparatus 16 (not shown). No.) at the predetermined position, the work is stopped for the work stop time D8 of the basic data D, and the next communication rail 9
Repeat the operation of moving to (step S3
9). As shown in the vertical relationship between the transport carriage 3 and the undercoat drying device 16 in FIG. 5, the preheating device 11, the first and second heating devices 11 are provided.
Undercoating devices 12, 13, first and second undercoating correction units 14, 1
5. Only the hanging frame 34 and the work W1 that are hung on the transport carriage 3 enter the undercoat drying device 16, and the heat from the lower side and the paint that scatters are the heat insulating plate of the transport carriage 3 shown in FIG. Blocked by 33.

The latter half of the above item (5) and step S in FIG.
7 and S14, when the basic data D is erased without suspending the work W1 on the transport carriage 3 and the transport carriage 3 is started in an empty state, steps S15 and S16 in FIG.
As shown in, the presence or absence of the basic data D is detected when the control device 31 of the transport vehicle 3 starts communication with the control device 45 of the undercoat area A2. Then, if the basic data D is erased, it is determined that the carriage 3 is in an empty state, the process moves from step S16 to the lower side of step S39 in FIG. 15, and the carriage 3 moves each part of the undercoat area A2. Drive without stopping and enter the next topcoat area A3. As described above, the process in the undercoat area A2 is completed, and in parallel with the flow of steps S15 to S39 of FIGS. 13, 14, and 15, the control of the preceding paragraph (4) (step S101 of FIG. 11). Up to step S114) is also performed at the same time.

(7) Next, the top coating area A3 of the carriage 3.
The process in (1) will be described with reference to FIGS. The process of this overcoat area A3 is basically the same as the previous item (6).
It is the same flow as the process of the undercoat area A2, the topcoat area A3 does not include the preheating device 11 and the undercoat drying device 16 in the undercoat area A2, and the coating color number D7 of the basic data D is previously conveyed by the carriage. The top coat area A3 is different from the bottom coat area A2 in that it is sent from the controller 31 of No. 3 to the controller 46 of the top coat area A3 as described below.

That is, when the carriage 3 enters the overcoat area A2 from the undercoat area A2, the controller 31 of the carriage 3 stops the communication with the controller 45 of the undercoat area A2, and FIG.
Communication with the control device 46 in the overcoat area A3 shown in (4) is started (step S40), and the presence or absence of the basic data D is detected (step S41). In the case of including the basic data D, when the transport carriage 3 reaches the communication rail 9 (9d) immediately before the first overcoating equipment 17 as shown in FIG. The paint color number D7 (see FIG. 10) of the basic data D is transmitted to the control device 46 in the topcoat area A3, and the paint color number D7 is transmitted from the control device 46 to the first topcoat device 17 as an operation command (step). S42).

In this case, the coating color number D7 different from the coating color currently used in the first coating device 17 is the first coating device 1.
7 (step S43), if the painting of the work W1 of the preceding carriage 3 has been completed by the first overcoating device 17, the first overcoating device 17 immediately responds to the painting color number D7. The change to the paint color is started. Then, if the coating of the work W1 of the preceding carriage 3 by the first top coater 17 is not yet finished, the change to the coat color corresponding to the paint color number D7 is immediately made in the first top coater 17 after the finish of the coating. Start (steps S44, S
45).

After this, the carrier 3 reaches the communication rail 9 of the first top coater 17 in FIG. 1, and at this time, as in the case of the first and second base coaters 12 and 13 (see FIG. 1).
3), and as shown in steps S46 to S47, the controller 31 of the transport carriage 3 transfers the first topcoat number D5 of the basic data D to the controller 46 of the topcoat area A3 (see FIG. 1).
(See 0) is transmitted, and the transport carriage 3 passes through the first overcoat device 17 without stopping, or the transport carriage 3 stops at a predetermined position of the limit switch of the first overcoat device 17 and
The topcoat device 17 starts the coating of the work W1 with the coating pattern program corresponding to the first topcoat number D5.

When the first topcoating device 17 is used for coating, the hoist 32 of the carrier 3 is linked to the operation of the spray gun of the first topcoating device 17, and the range of the work lifting amount D9 of the basic data D is reached. Therefore, the work W1 is automatically moved up and down in the first top coating device 17, and when the coating in the first top coating device 17 is completed, the end signal is sent from the control device 46 of the top coating area A3 to the control device 31 of the transport carriage 3. Is transmitted, and the carriage 3 starts to move out of the range of the first top coater 17.

Next, as shown in FIG. 5, the second top coater 18
Communication rail 9 of the first top coater 17 which is one side before
When the carriage 3 reaches (9e), the paint color number D7 of the basic data D is transmitted again from the controller 31 of the carriage 3 to the controller 46 of the overcoat area A3, and the controller 4
This coating color number D7 is transmitted from 6 to the second top coater 18 as an operation command (step S48).

In this case, similarly to the state of the first top coater 17, when a paint color number D7 different from the paint color currently used by the second top coater 18 is transmitted to the second top coater 18 ( Step S49), if the coating of the work W1 of the preceding carriage 3 has been completed by the second top coater 18,
Immediately, in the second top coater 18, the change to the coating color corresponding to the coating color number D7 is started. Then, if the coating of the work W1 of the preceding carriage 3 by the second top coater 18 is not yet finished, the change to the paint color corresponding to the paint color number D7 is immediately made in the second topcoater 18 after the finish of the coating. It is started (steps S50 and S51).

After this, the carrier 3 reaches the communication rail 9 of the second overcoating device 18 from the first overcoating device 17 in FIG. 1, and the steps S52 through S are performed in the same manner as described above.
As shown in 53, the second overcoat number D6 (see FIG. 10) of the basic data D is transmitted from the control device 31 of the transport vehicle 3 to the control device 46 of the overcoat area A3, and the transport vehicle 3 is not stopped and the second overcoat number D6 is transmitted. The carrier 3 is stopped at the predetermined position of the limit switch of the second overcoat device 18 or passed by the overcoat device 18, and the second overcoat device 18 causes the second overcoat device 18 to apply the coating pattern program corresponding to the second overcoat number D6 to the workpiece W1. Start painting.

When the second overcoating device 18 is used for coating, the hoist 32 of the carriage 3 is linked to the operation of the spray gun of the second overcoating device 18 and the range of the work lifting amount D9 of the basic data D is reached. Therefore, the work W1 is automatically moved up and down in the second top coating device 18, and when the coating in the second top coating device 18 is completed, the end signal is sent from the control device 46 of the top coating area A3 to the control device 31 of the transport carriage 3. Is transmitted, and the carriage 3 starts to move out of the range of the second overcoating device 18.

Next, the carriage 3 reaches the first and second overcoat correction units 19 and 20 in FIG.
16 and FIG. 1 when entering the overcoat correction units 19 and 20.
Step S54 to Step S55 and Step S5
6 to step S57, the carriage 3 stops while decelerating at a predetermined position of the limit switch (not shown) of the first and second overcoat correction units 19 and 20, and the basic data D
When the work stop time D8 has passed, the carrier vehicle 3 automatically starts.

During this period, the first and second overcoat correction units 1
The operator inside 9 and 20 corrects the top coat of the work W1 while operating the hoist 32 by the manual box 43 up and down, and if the top coat correction is completed before the work stop time D8 elapses, the worker Need only press the start button of the manual box 43, and if the correction of the overcoat cannot be completed before the work stop time D8 elapses, the operator may press the stop button of the manual box 43 in advance. Then, the first and second undercoat correction units 14 and 15 described above are provided.
In the same manner as in the above case, if the suspension frame 34 does not reach the upper limit when the transport vehicle 3 starts, the hoist 32 automatically operates to raise the suspension frame 34 to the upper limit before the transport vehicle 3 Will start.

The above-mentioned first and second top coaters 17 and 18,
In the first and second overcoat correction units 19 and 20, the transport carriage 3 is provided with the first and second overcoat devices 17 and 1 as shown in FIG.
8, the first and second topcoat correction units 19 and 20, only the hanging frame 34 and the work W1 that is suspended by the transport carriage 3, the first and second topcoat devices 17 and 18, the first
2 and the second top coat correction section 19 and 20, and the paint splashing from the lower side is the heat insulating plate 3 of the carriage 3 shown in FIG.
Blocked by 3.

The latter half of the above item (5) and step S in FIG.
As shown in 7 and S14, when the basic data D is erased without suspending the work W1 on the carrier 3 and the carrier 3 is started in an empty state, steps S40 and S41 in FIG.
As shown in, the presence or absence of the basic data D is detected when the control device 31 of the transport vehicle 3 starts communication with the control device 46 of the overcoat area A3. Then, if the basic data D is erased, it is determined that the carriage 3 is empty, and the process moves from step S41 to the lower side of step S57 in FIG. 17, and the carriage 3 moves each part of the overcoat area A3. Drive without stopping and enter the next drying area A4. As described above, the process in the overcoat area A3 is completed, and in parallel with the flow of steps S40 to S57 of FIGS. 15, 16, and 17, the control of the preceding paragraph (4) (step S101 of FIG. 11). Up to step S114) is also performed at the same time.

(8) Next, the drying area A4 of the carriage 3
The process in step will be described with reference to FIG. As shown in FIG. 6, the range of the same number of communication rails 9 as the number of communication rails 9 in the overcoat drying device 22 is set on the exit side (on the right side of the drawing) of the overcoat drying device 22. The drying area A41 is set over the range from the inlet side to the exit side (for example, if the number of communication rails 9 in the overcoat drying device 22 is four, the communication rails 9 in the drying area A41). Will be eight).

When the carriage 3 enters the drying area A4 from the topcoat area A3, the controller 31 of the carriage 3 stops the communication with the controller 46 of the topcoat area A3, and the controller of the dryer area A4 shown in FIG. Communication with 47 is started (step S58). Then, as shown in FIG. 6, one carrier truck 3 is provided with the communication rail 9 (9
When f) is reached (step S59), the number of transport carriages 3 existing in the drying area A41 is detected (step S59).
60).

In this case, a predetermined number of the carrier vehicles 3 existing in the dry area A41 (the communication rails 9 in the dry area A41).
Corresponding to 1/2 of the number of, for example, the dry area A in the configuration of FIG.
When the number of communication rails 9 in 41 is eight, the predetermined number is four (4) (step S61), the shutter 22a on the inlet side of the top coat drying device 22 is automatically opened, and the drying area A4 is displayed. On the basis of a signal from the controller 47 of the above, the carriage 3 of the front communication rail 9 (9f) is started, the work W1 enters the top coat drying device 22, and the shutter 22a on the entrance side of the top coat drying device 22 is automatically operated. Closed (step S63). On the contrary, if the number of the carriages 3 existing in the drying area A41 is a predetermined number (step S61), the carriages of the front communication rail 9 (9f) are based on the signal from the controller 47 of the drying area A4. 3 is stopped at that position (step S62), and the dry area A
If the number of transport carriages 33 present in 41 is less than a predetermined number (step S61), the front communication rail 9 (9
The transport carriage 3 stopped in f) can enter the range of the overcoat drying device 22 (step S63).

As described above, the work W1 on the carriage 3 is carried out.
When entering into the top coat drying device 22, the transport carriage 3 uses the basic data D in each communication rail 9 within the range of the top coat drying device 22.
The operation of stopping for the work stop time D8 (see FIG. 10) and moving to the next communication rail 9 is repeated (step S65) (for example, the range of the top coat drying device 22 as shown in FIG. 6). There are four communication rails 9 inside,
Assuming that the work stop time D8 is 2 minutes, the work W
The total time for which 1 is in the top coat drying device 22 is 8 minutes). On the contrary, as shown in the latter half of (5) above and steps S7 and S14 of FIG. 12, the basic data D is erased without suspending the work W1 on the transport carriage 3 and the transport carriage 3 runs in an empty state. If it is present (step S64), the carrier truck 3 uses the communication rails 9 within the range of the overcoat drying device 22.
Continue driving without stopping at. Then, when the work W1 of the transport carriage 3 comes out of the top coat drying device 22, the shutter 22b on the outlet side of the top coat drying device 22 is automatically opened and closed again.

As described above, the drying area A41 having a length twice the length of the top coat drying device 22 is set, and the drying area A41 is set.
By configuring so that only a predetermined number or less of the transport carriages 3 can be put therein, the top coat drying device 22 can transport the transport carriages 3 to each other.
An empty communication rail 9 through which the vehicle can immediately exit is always secured on the exit side of the overcoat drying device 22. This allows
Since the total time during which the work W1 is in the top coat drying device 22 is always a constant time (the value obtained by multiplying the number of communication rails 9 within the range of the top coat drying device 22 by the work stop time D8). Yes, a state in which a large number of transport carriages 3 are stagnant at the exit side of the topcoat drying device 22, the transport carriages 3 cannot exit from the range of the topcoat drying device 22, and the work W1 is dried for a certain period of time or more. And the coating quality of the work W1 is maintained.

As shown in FIG. 6, in the top coat drying device 22, the transport carriage 3 does not enter the top coat drying device 22, and the transport carriage 3
The hanging frame 34 and the work W1 that are suspended in the
Only the top coating drying device 22 enters the top coating drying device 22, and the heat from the top coating drying device 22 is shut off by the heat insulating plate 33 of the transport carriage 3 shown in FIG. As described above, the drying area A4
18 is completed, and step S in FIG.
In parallel with the flow from 58 to step S65, the control of the previous item (4) (see steps S101 to S114 in FIG. 11) is also performed at the same time.

(9) Next, the waiting area A5 of the carriage 3
The process in step will be described with reference to FIG. When the carriage 3 enters the waiting area A5 from the drying area A4, the controller 31 of the carriage 3 controls the controller 4 of the drying area A4.
The communication with the communication device 7 is stopped, and the communication with the control device 48 in the standby area A5 shown in FIG. 9 is started (step S66). Then, when it reaches the predetermined communication rail 9 in the standby area A5, the carriage 3 is configured to stop for the work stop time D8 of the basic data D and start again (step S68). In the drying device 22, a cooling time for the work W1 that has been dried and heated is ensured.

On the contrary, as shown in the latter half of the previous item (5) and steps S7 and S14 of FIG.
When the transport vehicle 3 is running in an empty state by erasing the basic data D without suspending (step S67), the transport vehicle 3 should be stopped at the predetermined communication rail 9 in the standby area A5. I will continue to drive as it is. As described above, the process in the waiting area A5 is completed, and in parallel with the flow of steps S66 to S68 of FIG. 18, the control of the preceding item (4) (step S101 to step S101 of FIG. 11) is performed.
Step S114) is also performed at the same time.

(10) Next, the first and second transportation carriages 3
The process in the supply areas A6 and A7 and the relationship between the first and second supply areas A6 and A7 and the assembly line 2 will be described. As shown in FIGS. 19 and 8, when the carriage 3 enters the first supply area A6 from the waiting area A5, the controller 31 of the carriage 3 stops communication with the controller 48 of the waiting area A5, and the controller 31 of FIG. Of the first supply area A6 shown in FIG.
9 starts communication (step S69) with basic data D
The presence or absence of is detected (step S70).

When the carrier 3 does not suspend the work W1 and does not have the basic data D (step S7)
0), and even if the carriage 3 suspends the coated work W2 and has the basic data D, the basic data D
The first supply area A6 in the supply section number D2 (see FIG. 10) of
When there is no first to fifth supply units 23 to 27 to be stopped in step S71 (step S71), the carriage 3 is in the first supply area A6.
Without stopping at the first to fifth supply units 23 to 27, the vehicle directly travels and enters the second supply area A7.

On the contrary, the carrier 3 suspends the coated work W2 and has the basic data D, and the first to the first parts to be stopped in the first supply area A6 in the supply section number D2 of the basic data D. If there are five supply units 23 to 27 (step S7)
1), the carriage 3 stops at the first one to be stopped among the first to fifth supply units 23 to 27 in the first supply area A6 (step S72). When the transport vehicle 3 stops at the first to fifth supply units 23 to 27 corresponding to the supply unit number D2 in this way, the shutter 10a of the platform 10 below the transport vehicle 3 automatically moves as shown in FIG. When opened (step S73), the hoist 32 of the carrier 3 is operated, and the coated work W2 is automatically lowered from the floor surface G to a position of a predetermined height and stopped (step S74).

By visually checking this state by the workers standing on the first to fifth supply sections 23 to 27, the operator operates the manual box 43 to lower the coated work W2 of the transport carriage 3 to the carriage 52. An operation is performed (step S75), and the worker lowers the painted work W2 (only a specific work W2 when a plurality of works W2 are hung) from the hanging frame 34 to the carriage 52 (step S76). When the work of lowering the work W2 is completed, the worker operates the manual box 43 to raise the hanging frame 34 (step S77), and presses the start button of the manual box 43 which means the completion of the lowering work (step S78). . As a result, the shutter 10a is automatically closed (step S7).
9), the carriage 3 starts (step S80). When the transport carriage 3 starts as described above, the suspension frame 34 has not reached the upper limit (step S78).
a), the hoist 32 automatically operates, and the suspension frame 34 rises to the upper limit (step S78b),
The shutter 10a is closed (step S79), and the carriage 3 is started (step S8).
0).

When the first to fifth supply units 23 to 27 to be stopped in the first supply area A6 are still present in the supply unit number D2 (step S81), the process proceeds to step S72 and the carrier vehicle 3 is set to the first position. 1st-5th supply part 2 of supply area A6
The work is stopped at the next one to be stopped among 3 to 27 (step S72), and the above-described work of lowering the coated work W2 is repeated.

When the process in the first supply area A6 is completed as described above, the carrier 3 enters the second supply area A7, and the work shown in the above steps S69 to S81 is also performed in the second supply area A7. Is done. In this way, the process in the first and second supply areas A6 and A7 is completed, and step S69 in FIG.
~ In parallel with the flow of step S81, the control of the previous item (4) (see step S101 to step S114 of Fig. 11)
Is being done at the same time. As described above, the emptied transport carriage 3 for all the painted work W2 in the first and second areas A6 and A7 is the second as shown in FIGS.
It enters the lifting area A1 from the supply area A7, receives the basic data D for the next work W1 prepared in advance from the teaching device 4, and supplies it to the first to third lifting parts 5 to 7 of the lifting area A1. It will run.

Next, the first and second supply areas A6 and A7
The relationship between the assembly line 2 and the assembly line 2 will be described. As shown in FIGS. 1 and 8, the first and second supply areas A6 and A7 are formed in a linear shape, and the first and second supply areas A6 and A7 are formed.
The first to fifth supply units 23 to 27 are sequentially formed on the floor surface G in each of the seven. On the other hand, the assembly line 2 is divided into a plurality of small sections 2a and is formed in a linear shape.
The assembly line 2 is installed in parallel along the supply areas A6 and A7, and the flow of the assembly line 2 is set in the opposite direction to the first and second supply areas A6 and A7 (to the right in the drawing of FIG. 1). There is. With the above configuration, the work W2 after painting
Are lowered by the first to fifth supply units 23 to 27 in the first and second supply areas A6 and A7, respectively.
Each work W2 is conveyed from 27 to the predetermined small section 2a of the assembly line 2 in a timely manner.

(11) Next, the first and second supply areas A
6, a dolly 5 for receiving the work W2 after painting at A7
2 will be described. As shown in FIGS. 20 and 21, the carriage 52 includes a main frame 53 having wheels 53a and caster wheels 53b with brakes, and a moving base 54 having wheels 54a traveling on a first rail 53c of the main frame 53. It is configured. A round bar-shaped second rail 53d fixed to the main frame 53 is inserted into a pair of pipe guides 54b fixed to the lower surface of the moving table 54,
When the moving table 54 moves along the first rail 53c,
The movable table 54 is configured so as not to come off the main frame 53. Then, the rubber plate 53e is attached to the end of the main frame 53.
Is fixed, the rubber plate 54c is also fixed to the moving table 54, and the rubber plate 5 is also fixed to the upper frame 54e of the moving table 54.
4d is wrapped around.

With the above structure, the following operation is performed in the case of a relatively large work W2 such as a backhoe dozer blade. First, as shown in FIG. 22A, the caster wheels 53b of the main frame 53 are braked to move the moving base 54 to the rubber plate 53 of the main frame 53.
Place it on the e side. Then, the operator operates the manual box 43 to lower the work W2, abuts the end of the lower surface of the work W2 against the rubber plate 54d of the upper frame 54e of the moving table 54, and operates the manual box 43. Further, the work W2 is lowered.

As a result, the movable table 54 is moved to the main frame 53.
22 (a) along the first rail 53c to the left in the drawing, the posture of the work W2 is gradually changed from the vertical direction to the diagonal direction. And FIG.
As shown in (b), when the moving table 54 moves to the end of the main frame 53, the posture of the work W2 becomes substantially sideways,
The opposite end of the work W2 is the rubber plate 5 of the main frame 53.
Since the work W2 is removed from the suspension frame 34 in this state, the work W2 can be placed sideways on the carriage 52. As described above, even a relatively large work W2 that is suspended in the vertical posture can be changed to the horizontal posture in a stable state and placed on the trolley 52, which improves workability.

[Other Embodiment] In the above-mentioned embodiment, the carrier truck 3 is used.
And the control devices 44 to 50 communicate with each other so that one transport carriage 3 is positioned on one communication rail 9 by a stop signal from the control devices 44 to 50. Alternatively, the carrier vehicle 3 may be located on one communication rail 9 according to its own judgment.
In the above-mentioned embodiment, the automatic coating facility for coating the works W1 in order is shown, but an automatic processing facility for sequentially machining the workpieces before processing, or an automatic process for assembling the workpieces in order. The present invention can also be applied to an assembly facility.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view showing the entire automatic painting facility and assembly line.

[Fig. 2] Side view of a carrier vehicle

FIG. 3 is a front view of a carrier truck.

FIG. 4 is a diagram showing the vicinity of a lifting area.

FIG. 5 is a diagram showing the second half of the undercoat area and the vicinity of the overcoat area.

FIG. 6 is a diagram showing the vicinity of a dry area.

FIG. 7 is a diagram showing the vicinity of a waiting area

FIG. 8 is a diagram showing the vicinity of first and second supply areas.

FIG. 9 is a diagram showing a relationship between each control device and a communication rail in an automatic painting facility.

FIG. 10 is a diagram showing the contents of basic data taught to a control device for a carrier vehicle.

FIG. 11 is a diagram showing a basic flow of traveling and stopping of a carrier vehicle on a traveling rail of an automatic coating facility (representing a state in a standby area).

FIG. 12 is a diagram showing the flow of processes in the lifting area of the carrier truck.

FIG. 13 is a diagram showing the flow of the first half of the process in the undercoat area of the carrier.

FIG. 14 is a diagram showing the flow of the latter half of the process in the undercoating area of the carrier.

FIG. 15 is a diagram showing the flow of the first half of the process in the top coating area of the carrier truck.

FIG. 16 is a diagram showing the flow of the middle half of the process in the top coating area of the carrier.

FIG. 17 is a diagram showing the flow of the latter half of the process in the top coating area of the carrier truck.

FIG. 18 is a diagram showing a flow of processes in a dry area and a standby area of a carrier truck.

FIG. 19 is a diagram showing a flow of steps in the first and second supply areas of the carrier truck.

FIG. 20 is an overall perspective view of a trolley on which a work after coating is placed in the first and second supply areas.

FIG. 21 is a front view of the upper half of the trolley on which the coated work is placed in the first and second supply areas.

22 is a side view showing a state in which the painted work is placed on the dolly shown in FIGS. 21 and 22. FIG.

FIG. 23 is a plan view showing the entire conventional automatic coating facility and assembly line.

[Explanation of symbols]

1 Traveling Route 3 Conveyor Vehicle 5, 6, 7 First Delivery Section 9 Communication Section 11, 12, 13, 16, 17, 18, 22 Processing Device 23, 24, 25, 26, 27 Second Delivery Section 37 Contactor 44 , 45, 46, 47, 48, 49, 50 Control device W1, W2 Work

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akitsugu Nishijima 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (1)

[Claims] 1. A loop-shaped traveling route (1), and a plurality of carrier vehicles (3) capable of traveling and stopping along the traveling route (1) in a predetermined direction and capable of holding works (W1), (W2). ) And a first transfer unit (5) for temporarily storing a plurality of different types of workpieces (W1) before processing and transferring them to the transport carriage (3),
(6), (7) and a plurality of processing devices (11), (12), (13), (1) for the works (W1), (W2).
6), (17), (18), and (22) and the second transfer parts (23), (24), (25), and (26) that receive the processed work (W2) from the transport carriage (3). ), (2
7) and 7) are arranged in this order at predetermined intervals along the looped travel route (1), and a large number of independent communication units (9) of predetermined length are provided on the travel route (1). Each of the plurality of communication units (9) is provided with a contactor (37) arranged along the traveling route (1) and contacting the communication unit (9) while traveling along the travel route (1). (44), (4
5), (46), (47), (48), (49), (5
0) in the fixed part, and via the communication part (9) with which the contactor (37) of each of the carrier cars (3) contacts, the carrier cars (3) and the control devices (44), (45). ), (46), (47), (48),
An automatic processing facility configured to communicate with (49) and (50).