JP2858117B2 - Vehicle assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a vehicle assembly facility.

(2) Prior Art Conventionally, as this kind of assembling equipment, there has been known an assembling equipment in which a bogie having a vehicle body is run on a track of an assembly line and various parts are sequentially assembled to the vehicle body.

(3) Problems to be Solved by the Invention A man-dependent area in which a plurality of manual work stations are continuous, an automated area in which a plurality of mechanized automatic work stations are continuous, and a simple manual work area located between the adjacent man-dependent areas. In an assembly line having one automatic work station, in order to improve the productivity of the vehicle and secure the safety of the assembling work, the traveling mode of the trolley in the area dependent on human labor and the traveling of the trolley in the automation area. It is desirable to change the mode. However, in the above-mentioned conventional equipment, the demand cannot be satisfied because the traveling mode of the bogie is one mode.

Further, in a vehicle assembly line in which a man-dependent area and an automation area are mixed, a vehicle in which a transport mechanism suitable for a man-dependent area and a transport mechanism suitable for an automated area are already proposed (for example, Japanese Patent Application Laid-Open No. 61-21871). However, in this proposal, it is necessary to prepare several different types of transport mechanisms according to the layout of the manually dependent area and the automation area, which increases the equipment cost and increases the body weight. When shifting between the dependent zone and the automation zone, it is necessary to perform a special transfer operation of the vehicle body between the adjacent transport mechanisms, and there is a problem that the work efficiency is poor accordingly.

SUMMARY OF THE INVENTION The present invention aims to provide a vehicle assembling facility which can solve the above-mentioned problems of the conventional device at a time. B. Configuration of the Invention (1) Means for Solving the Problems To achieve the above objects In addition, the present invention provides an assembly line having a manual dependent area in which a plurality of manual working stations are continuous and an automated area in which a plurality of mechanized automatic working stations are continuous. Laying a continuous track passing through,
A vehicle assembling facility, in which a vehicle body is mounted on a self-propelled bogie common to all of the work stations, which is capable of traveling on the track, and the vehicle body is transported along the assembly line. A control mechanism installed on the bogie to control the running mode and running stop of the bogie; and a control signal is output to the control mechanism such that the control mechanism controls the bogie to the low-speed continuous running mode in the manual-dependent area. A first signal output mechanism, and a stop signal output mechanism for outputting a control signal to the control mechanism so that the control mechanism controls the stop of positioning of the bogie at an assembly position of each automatic work station in the automation area. The control mechanism controls the truck to a high-speed tact running mode in order to make the truck run at a high speed between the mounting positions of the automatic work stations adjacent to each other in the automation area. A second signal output mechanism that outputs a control signal to the one side of the track horizontally between the mounting positions of adjacent automatic work stations in the automation area. A belt-shaped high-speed travel instructing member provided therein, and a first sensor provided on the carriage and capable of detecting the high-speed travel instructing member, wherein the stop signal output mechanism is provided for each of the automatic work stations in the automation area. A stop position indicating member fixed to one side of the track at the same height corresponding to each of the assembling positions, and a common second sensor provided on the carriage and capable of detecting the stop position indicating member; It is characterized by having.

(2) Operation According to the above configuration, in a vehicle assembly line in which a human dependent area and an automation area are mixed, the vehicle body can be transported by a truck common to all work stations in those areas, so that equipment costs are reduced. Savings can be achieved, and the body transfer work can be omitted as much as possible.

In addition, in a manually dependent area, the bogie is continuously run at a low speed in accordance with the work speed of the manual operation, so that the efficiency of the assembling work can be minimized and the work safety can be minimized.
On the other hand, in the automation area, the bogie is positioned and stopped at the assembling position of each automatic assembling station so that the automatic assembling operation can be performed accurately, and the bogies are moved between the assembling positions of the adjacent automatic assembling stations. The traveling time is reduced by running at high speed. It should be noted that since there is no worker in the automation area, there is no safety problem even if the truck is driven at high speed when moving.

Particularly in the automation area, high-speed traveling control between the assembling positions of adjacent automatic working stations is performed in cooperation with the belt-shaped high-speed traveling instruction member and the first sensor, while the assembly of each automatic working station is performed. Since the stop control of the positioning of the bogie to the attached position is performed in cooperation with each stop position indicating member and the second sensor, the mere selection of the position of the belt-shaped high-speed travel indicating member and each stop position indicating member is performed.
It is possible to easily set the high-speed traveling section of the bogie and the stop position according to the automatic assembling position, and even if the layout of the automatic work station is changed, the belt-shaped high-speed traveling instruction member and each stop position instruction member can be used. It can be easily and accurately responded to by changing or changing the position.

(3) Embodiment FIG. 1 shows an outline of a facility for assembling a passenger car as a vehicle. The assembly line L has a plurality of linearly arranged, in the illustrated example, first to third assembly blocks B _{1 to} B. is divided into _3, each assembly block B ₁ .about.B ₃ is provided with a plurality of work stations.

The first to third assembly blocks B _{1 to} B ₃ include a truck track 1,
A power supply rail 2 is laid in parallel with the power supply rail 2.
Are supplied with power from the power supply E. A plurality of self-propelled trolleys 3 each having a vehicle body Bo mounted thereon are disposed on the track 1, and a forked current collector 4 provided on each trolley 3 slides on the power supply rail 2. As a result, the drive motor of each truck 3 is energized, and each truck 3
It can travel toward the first assembly block B ₁ to the third building block B _3.

The first assembly block B ₁ represents, aligned in the traveling direction of the carriage 3, for example, the first person manually station m ₁ for performing assembly of the handbrake lever, the applying for front glass adhesive 2
A manual work station m _2, performs the assembly of the steering column and the front glass by the robot, includes a first automatic work station a ₁ which is mechanized, and a third person manually station m ₃ for performing assembly of the seat belt I have.

The second building block B ₂ is arranged in the traveling direction of the carriage 3, for example, and the four manual stations m ₄ to perform assembling of the side lining, the assembly of the rear seat by a robot and radiator liquid, power steering oil and windows elevation comprises a second automatic work station a ₂ which is mechanized to supply the liquid, a fifth person manually station m ₅ to perform assembling of the rear backrest.

The third assembly block B ₃ is arranged in the traveling direction of the carriage 3, for example, a sixth manual work station m ₆ for assembling a front seat, and a mechanization for assembling left and right, front and rear wheels and a spare wheel by a robot. a third automatic work station a ₃ that is, the left and right by the robot, and the fourth automatic work station a ₄ that is mechanized performing assembly of front and rear doors, and a seventh person manually station m ₇ to perform sticking labels Have.

At the first to seventh manual work stations m _{1 to} m ₇ , the work is performed while the carriage 3 is running, and at the first to fourth automatic work stations a _{1 to} a ₄ , the carriage 3 is stopped at each assembly position. The work is performed.

In such an assembly line L, the continuous first and second manual work stations m ₁ and m ₂ are located in the first manual dependent area Zm ₁ , and the continuous third and fourth manual work stations m ₃ and m _4. There the second hand depends zone Zm _2, further fifth consecutive sixth person manually station m _5, m ₆ belong respectively to the third hand-dependent zone Zm _3. On the other hand, the continuous third and fourth automatic work stations a ₃ and a ₄ belong to the automation zone Za. Since the first and second automatic work stations a ₁ and a ₂ and the seventh manual work station m ₇ exist independently of each other, they are out of the above-mentioned areas.

Next, the configurations of the track 1 and the bogie 3 and their relationship will be described with reference to FIGS.

In the following description, “front, rear” and “left, right” refer to the traveling direction of the truck 3 (arrow A in FIG. 2).

The track 1 is made of a square tubular material having a rectangular cross section and has a transport pit 6 provided on the work floor 5 along the traveling direction of the bogie 3.
The trucks 3 are laid on the track 1 so that they can run on the track 1 by themselves. The base frame 7 of the bogie 3 includes a pair of left and right plates 8 ₁ , 8 arranged in a vertical direction parallel to each other.
_2, the left, and a pair of crosspieces 9 which binds together the front and rear portions of the right side plate _81, 82, left and right side plates _81, 82 of the upper pit lid 10
Projecting above the pit lid 10 through a slit 11 formed in the pit. Above them, the working cylinder 12, X-type link
A substantially horizontal lifting table via a lifting mechanism 14 having 13 and the like
A turntable 16 is supported on the elevating table 15 so that the turntable 16 can turn substantially horizontally about a vertical center axis V. Pallet Pa consisting of a pair of halves 17 on the swivel base 16
The body Bo is positioned and supported via the.

A number of rolling rollers 18 are rotatably supported on the upper left and right side surfaces of the track 1 at intervals in the longitudinal direction, and a V roller 19 is rotatable at an appropriate position between the rolling rollers 18. It is supported by The left and right plates 8 ₁ , 8
₂ is slidably engaged with the rod-shaped traveling slider 20 fixed to the _second roller 2. The V-roller 19 has left and right plates 8 ₁ , 8
_The rod-shaped positioning slider 21 fixed to ₂ is slidably engaged (FIG. 4). The V roller 19 and the positioning slider 21 perform the positioning operation of the carriage 3 in the left-right direction.

Rotational speed of the truck traveling at the left side plate ₈₁ adjustable drive motor 22
And a pinion 24 is fixed to an output end of a speed reducer 23 connected to the drive motor 22. The pinion 24 meshes with a rack 25 provided on the left side of the track 1 over its entire length.

The right side of the track 1 as shown in FIG. 4, the laying supply rail 2 over its entire length, to the supply rail 2, collectors 4 fixed to the right side plate ₈₂ is in sliding contact. When the drive motor 22 is energized from the power supply rail 2 via the current collector 4,
The pinion 24 rolls on the rack 25, and the bogie 3 travels along the track 1 by itself.

Previous left side plate ₈₁ of each carriage 3, rod-end collision prevention bumper 26 ₁ extending in the front-rear direction in the rear, 26 ₂ are provided.

Next, the traveling mode control method of the bogie 3 will be described with reference to FIGS.

Fourth, as shown in FIG. 5, carriage 3 in the right side plate ₈₂ of the carriage 3
A control mechanism 27 for controlling the traveling mode and the traveling stop of the vehicle is provided. The control mechanism 27 determines that the cart 3 is in the first to third manually dependent areas Zm _{1 to} Zm ₃ and the seventh manual work station m _7.
When the vehicle 3 travels in the automation zone Za, the rotational speed of the drive motor 22 is controlled via the servo amplifier 28 so as to control the vehicle 3 to the low-speed continuous traveling mode. In order to control the operation mode, the rotation speed and stop of the drive motor 22 are controlled via the servo amplifier 28, and the first and second automatic work stations a ₁ and a
_{In step 2} , the rotation of the drive motor 22 is stopped to stop the positioning of the carriage 3 at each of the assembly positions.

A transmitter 29 for transmitting an optical signal is mounted on the right side of the track 1 via a bracket 30, and a receiver 31 for converting the optical signal into an electric signal so as to be able to face the transmitter 29 is provided on the truck 3.
It is attached to the right side plate _82. Oscillator 29 is intended to be used provided first to third assembly blocks B ₁ .about.B ₃ per addressed single control of the running speed of the carriage 3 at each assembly block B ₁ .about.B _3, source 32 Connected to. The receiver 31 is connected to the control mechanism 27.

The information source 32 stores low-speed continuous running mode information on the speed of the truck and high-speed tact running mode information on the speed of the truck and the traveling distance of the truck, and can sequentially output them. The low-speed continuous driving mode information is
The traveling speed of the carriage 3 first to seven manual station m ₁
It used to slow continuous traveling carriage 3 in accordance with the working speed manual in ~m _7. In addition, the high-speed tact driving mode information indicates that the cart 3 is connected to the third and fourth automatic work stations.
a _3, between the two assembly positions mutual a _4, used to high speed in accordance with the conveying pitch.

Thisゝa slow continuous running mode information state outputs have the information source 32, transmitter 29 and receiver 31 constitute a first signal output mechanism S ₁ of the present invention, the first signal output mechanism S ₁ Is input to the control mechanism 27, the control mechanism 27
Drives the drive motor 22 at a low speed via the servo amplifier 28 to control the carriage 3 to the low-speed continuous running mode.

First, fourth, in an automated zone Za, as shown in FIG. 5, the strip fast running instruction so as to extend from the third assembly position of the automatic working station a ₃ to assembled position of the fourth automatic work station a ₄ member 33 is mounted on the right side of the track 1, the high-speed running instruction member 33 and the first sensor 34 ₁ on the right side plate ₈₂ of the carriage 3 so as to face is attached. The first sensor 34 ₁ thereof is connected to the control mechanism 27.

Thisゝa information source 32 outputs a high speed tact traveling mode information and the first sensor 34 ₁ is the detection signal by detecting the high speed instruction member 33 is input to the control mechanism 27, the control mechanism
Numeral 27 causes the drive motor 22 to rotate at high speed via the servo amplifier 28, and causes the carriage 3 to run at high speed.

Also in the first to third each set with the position of the automatic work station a ₁ ~a _3, the first to third positioning indication member 35 _{1-35 3} is mounted on the right side of the track 1, the positioning indicating member 35 _1
2 second sensor 34 is attached to the 35 ₃ and the right side plate ₈₂ of the carriage 3 so as to face each other. Its second sensor 34 ₂ control mechanism 27
Is connected to, the second sensor 34 ₂ is the positioning instruction member 3
When 5 _{1 to} 35 ₃ are detected and the detection signal is input to the control mechanism 27, the control mechanism 27 stops the power supply to the drive motor 22 via the servo amplifier 28, so that the drive is stopped and the positioning is stopped in the first to third each set with the position of the automatic work station a ₁ ~a _3. Accordingly, the work is automatically performed in the _first to third automatic work stations a _{1 to} a ₃ , and then the control mechanism 27 causes the bogie 3 to run again based on the high-speed tact running mode information or the low-speed continuous running mode information.

Fourth in the automatic work stations a _4, the stop position confirmation member 41 mounted on the right side of the track 1, the member 41 is detected by the second sensor 34 _second stop position of the carriage 3 after high-speed running (hence 4th assembling position of the automatic work station a ₄₎
Is detected, and when the detection signal is input to the control mechanism 27,
Similarly to the above control mechanism 27 stops the power supply to the drive motor 22, thereby stopping position the carriage 3 in the assembled position of the fourth automatic work station a _4.

The fast tact traveling mode information sources state of outputting 32, transmitter 29, receiver 31, high speed pointer member 33 and the first sensor 34 ₁ constitutes the second signal output mechanism S ₂ of the present invention When the control signal from the second signal output mechanism S ₂ is input to the control mechanism 27, the control mechanism 27 controls the carriage 3 at a high speed tact traveling mode.

The third positioning indicating member 35 ₃ and the position stop check member 4
1 and the second sensor 34 _2, stop signal output mechanism S ₃ of the present invention
Constitute the control signal from the stop signal output mechanism S ₃ is inputted to the control mechanism 27, the control mechanism 27 is adapted to stop controlling the traveling of the carriage 3 in an automated zone Za. Third positioning indicating member 35 ₃ and the position stop check member 41 Thus constitutes a stop position indicating member of the present invention.

As shown in FIG. 6, the control mechanism 27 includes a first control switch that closes when the trolley 3 is controlled in the low-speed continuous running mode and opens when the trolley 3 is controlled in the high-speed tact running mode. 36 _1, carriage 3 conversely opened when it is controlled to the low speed continuous driving mode, also closes a ₂ second control switch 36 is provided when the carriage 3 is controlled in a high speed tact traveling mode, the 1, second control switch 36 ₁ , 3
First operating when they are closed 6 _2, second relay 37
₁ and 37 are connected respectively. Contact 3 of both relays 37 ₁ and 37 ₂
When either _{one of} 8 ₁ and 38 ₂ is closed, the third relay 37 ₃
There its contacts 38 ₃ closes operated, thereby driving the motor 2
2 is energized and the trolley 3 runs.

Third, the rack 25 to the left side plate 8 ₁ of the carriage 3 as shown in FIG. 5
The third sensor 34 ₃ for counting the number of teeth is attached via a support member 39, the third sensor 34 ₃ is connected to the first opening and closing part of the control switch 36 ₁ via a counter 40.

Counter 40, or carriage 3 is within a prescribed speed by the count signal from the third sensor 34 _3, it is determined whether or exceeds it, Wakashi when carriage 3 has traveled exceeds the specified speed, the opening and closing unit Output a stop signal to the first control switch 36
₁ has a function of opening the first and third relays 37 ₁ , 3
7 ₃ in the inoperative is to stop the drive of the drive motor 22. Therefore, the first control switch 36 ₁ , the first relay 37
_1, the third relay 37 _3, the third sensor 34 ₃ and the counter 40 stops drive motor mechanism to avoid runaway of the carriage 3 St
Is composed.

Hitting the assembly of passenger cars, driving the carriage 3, as shown in Figure 1 from a first person manually station m ₁ to the seventh person manually station m _7. In this case, the first to third manual work dependent areas Zm _{1 to} Zm ₃ and the seventh manual work station m ₇
In the carriage 3 so that a line l ₁ to l ₄ in accordance with the working speed manual is slow continuous running, thereby safely, and can be carried out efficiently work. At the first and second automatic work stations a ₁ and a ₂ , the bogie 3 is positioned and stopped at the respective assembly positions as indicated by lines l ₅ and l ₆ , and the work is automatically performed.

In the automation area Za, the carriage 3 is positioned and stopped at the position where the third automatic work station a ₃ is assembled as shown by the line l ₇ , and the work is automatically performed. Then, as shown by the line l ₈ , the fourth automatic work station the carriage 3 to assembling position of a ₄ by high speed, automatic work positioning stops the carriage 3 in the assembled position of the fourth automatic work station a ₄ is performed as followed line l _9. As described above, when the carriage 3 is driven at high speed between the third and fourth automatic work stations a ₃ and a ₄ , work efficiency can be improved. Further, in the automation zone Za, there is no worker, so that there is no safety problem even if the carriage 3 is run at high speed.

In the first to third manual labor dependent areas Zm _{1 to} Zm ₃ and the seventh manual work station m ₇ , the drive motor 22
When the trolley 3 rotates at a high speed and runs over the specified speed, the stop mechanism St stops the driving of the drive motor 22 and thus immediately stops the trolley 3, so that accidental runaway of the trolley 3 is reliably avoided. Can be.

The power supply rail 2 is composed of a power supply unit disposed in each of the assembly blocks B _{1 to} B ₃ and a relay unit disposed between terminals of both adjacent power supply units in a non-contact state with the terminals. The power supply to the relay unit is controlled to be continued while power is supplied to both power supply units sandwiching the relay unit, and to be stopped when power supply to one of the power supply units is stopped. _{1 to} B ₃
Thus, when it is desired to stop the carriage 3, it can be surely performed.

That is, when the assembling work is performed in each of the assembly blocks B _{1 to} B ₃ , the two power supply units adjacent to each other are energized, and the relay unit narrowed between the two power supply units is also energized. Building block B ₁ (or B ₂ ) to the other building block B ₂
(Or B ₃₎ can travel to.

For example, when stopping the carriage 3 at the first assembly block B ₁ represents, stops the power supply to the power feeding portion of the assembly block B _1. Since Accordingly energization of the relay unit is stopped, even if the current collector 4 is across the first assembly block B ₁ of the feeding portion for performing carriage stop relay unit, cart 3 in this state the feeding portion of the first assembly block B ₁ to perform, and also bogie stop stop, energization from the adjacent feeding portions nor performed.

Note that oscillator 29 may be provided addressed single for each station _{m 1 ~m 7, a 1 ~a} 4.

C. Effects of the Invention As described above, according to the present invention, in a vehicle assembly line in which a human dependent area and an automation area are mixed, the vehicle body can be transported by a truck common to all work stations in those areas. The equipment cost can be reduced, and the work of transferring the vehicle body can be reduced as much as possible. In addition, in the manual-dependent area, the bogie can be continuously run at a low speed in accordance with the manual work speed, and the safety of the work can be improved while minimizing the decrease in the efficiency of the assembling work. The trolley is positioned and stopped at the assembly position of each automatic assembly station so that the automatic assembly work can be performed accurately. Therefore, it is possible to greatly contribute to the improvement of the efficiency of the assembly operation while ensuring the safety of the operation as a whole.

Particularly, in the automation area, the high-speed traveling control between the assembling positions of the adjacent automatic work stations is performed by a belt-like high-speed traveling instructing member horizontally arranged on one side of the track between them. Is performed in cooperation with the first sensor on the bogie side capable of detecting the position of the bogie. On the other hand, the control for stopping the positioning of the bogie to the mounting position of each automatic work station is performed on one side of the track corresponding to each of the mounting positions. Since the stop position indicating member disposed at the height and the second sensor on the bogie side capable of detecting the stop position are formed in cooperation with each other, a simple operation of the belt-like high-speed travel indicating member and each stop position indicating member is performed. The high-speed traveling section setting and the stop position setting of the bogie can be easily and accurately performed by the position selection, and even when the layout of the automatic work station is changed, the belt-like high-speed traveling instruction member and each stop position finger are set. It can be easily accommodated accurately by the replacement or repositioning of the members. Further, even if there are a plurality of stop position indicating members, these can be detected by the common second sensor, so that the configuration of the stop signal output mechanism is simplified accordingly.

[Brief description of the drawings]

FIG. 1 shows each work station in a vehicle assembly facility.
Explanatory diagram showing the relationship between the traveling speed of the bogie, etc., second through fourth.
The figure shows a truck, FIG. 2 is a perspective view, and FIG. 3 is FIG.
4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a block diagram showing a traveling mode control system of the bogie, and FIG. 6 is an electric circuit diagram. 1 track, 3 truck, 27 control mechanism, 33 high-speed running instruction member, 34 ₁ first sensor, 34 ₂ second sensor, 35 ₃ stop position indicating member third positioning instruction member, 41 ...... position stop check member as a stop position indicating member, a _3, a ₄ ...... third as the automatic work station, a fourth automatic work station, m ₁ ~m ₇ ...... first to seventh person manually station, Bo ...... body, L ...... assembly line, S _1, S
₂ ... First and second signal output mechanisms, S ₃ ... Stop signal output mechanism, Za... Automation area, Zm _{1 to} Zm ₃ .

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Isao Kudou 1-10-1, Shinsayama, Sayama City, Saitama Prefecture Inside Honda Engineering Co., Ltd. (72) Inventor Yoshimasa Ota 1-10-10, Shinsayama, Sayama City, Saitama Prefecture 1 Honda Engineering Co., Ltd. (56) References JP-A-61-21821 (JP, A) JP-A-58-93682 (JP, A) JP-A-56-163850 (JP, A) JP-A-63-1988 247179 (JP, A) JP-A-63-258312 (JP, A) JP-A-1-172,078 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B62D 65/00 B23P 21 / 00 303

Claims (1)

(57) [Claims] And 1. A manually-dependent area in which a plurality of manual work station (m ₁ ~m ₆₎ are continuous (Zm ₁ ~Zm _3), mechanized plurality of automatic working station (a _3, a ₄₎ is continuous the assembly line with the automation zone (Za) (L), their hand-dependent area (Zm ₁ ~Zm ₃₎ and all work stations of an automated zone (Za) a _{(m 1 ~m 6, a 3} , a 4) A continuous orbit that passes (1)
Laid, its trajectory (1) on which can travel, mounted body (Bo) to a common self-propelled carriage (3) wherein the total work station _{(m 1 ~m 6, a 3} , a 4) The assembly line (L)
A vehicle assembling equipment for transporting the vehicle body (Bo) along the vehicle, comprising a control mechanism (27) installed on the vehicle (3) for controlling a traveling mode and a traveling stop of the vehicle (3). ), And the control mechanism (27) in the manual-dependent area (Zm _{1 to} Zm ₃ ).
A first signal output mechanism (S ₁ ) for outputting a control signal to the control mechanism (27) so as to control the carriage (3) in the low-speed continuous running mode; and each automatic operation in the automation zone (Za). Station (a ₃ , a
₄ ) A stop signal output mechanism (S ₃ ) for outputting a control signal to the control mechanism (27) so that the control mechanism (27) controls the positioning stop of the bogie (3) at the installation position.
Between the assembly positions of the automatic work stations (a ₃ , a ₄ ) adjacent to each other in the automation zone (Za), the control mechanism (27) operates the high speed tact traveling mode so that the carriage (3) travels at high speed. And a second signal output mechanism (S ₂ ) for outputting a control signal to the control mechanism (27). The second signal output mechanism (S ₂ ) is provided in the automation zone (Za).
A belt-like high-speed traveling instructing member (33) horizontally disposed on one side of the track (1) across the assembling positions of the automatic work stations (a ₃ , a ₄ ) adjacent to each other; (1) A first sensor provided in (3) for detecting the high-speed traveling instruction member (33).
And a sensor (34 ₁₎ and said stop signal output mechanism (S _3), the trajectory to correspond to the assembly position of the automatic work stations (a _3, a ₄₎ of the automation zone (Za) (1) Stop position indicating members (35 ₃ , 41) fixed to one side at the same height, and the respective stop position indicating members (35 ₃ , 41) provided on the cart (3).
And a common second sensor (34 ₂ ) capable of detecting a vehicle.