JP3052020B2 - Automobile assembly method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a four-door car body and a two-door car body.
A door assembly line is provided in parallel with the body assembly line on which the body of the door car flows, and parts are assembled with the door removed from the vehicle body at the door removal station using the door small assembly line, and the door with the assembled parts is attached to the door installation station. And a method of assembling a vehicle to be mounted on the vehicle body again.

[0002]

2. Description of the Related Art Conventionally, as an assembling apparatus for a vehicle of this type, an apparatus described in Japanese Patent Application Laid-Open No. 3-159886 is known.

[0003]

In a two-door vehicle having a left door and a right door, there is a unit having a detachable roof, for example, as a unit member requiring a small group in addition to the left and right doors.

[0004] The present invention focuses on the difference in man-hours between a 4-door car and a 2-door car in a small door assembly line when a 4-door car and a 2-door car are mixedly manufactured, and makes effective use of the difference in man-hours. It is an object of the present invention to provide a method of assembling a vehicle in which detachable unit members of a two-door vehicle can be assembled in small units.

[0005]

In order to achieve the above object, the present invention provides a door assembly line in parallel with a vehicle assembly line in which a 4-door vehicle body and a 2-door vehicle body flow,
A method of assembling a vehicle, in which a part removed from the vehicle body at the door removing station is assembled with the door small assembly line, and the door having the assembled parts is reattached to the vehicle body at the door mounting station, The unit member is removed, and the parts are assembled to the door small assembly line while flowing the door member together with the door removed from the vehicle body of the two-door vehicle.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 10 show an embodiment of the present invention. FIG. 1 is a schematic view of an automobile assembling apparatus, FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1, and FIG. FIG. 4 is a view of the pallet on which the door and the roof are mounted, as viewed in the direction of the arrow 3 in FIG. 2, and FIG.
FIG. 5 is a view taken in the direction of the arrow 5 in FIG. 4, FIG. 6 is a sectional view taken along the line 6-6 in FIG. 5, and FIG. 7 is a view taken in the direction of the arrow 7 in FIG. 8 is a view in the direction of the arrow 8 in FIG. 7, FIG. 9 is a view in the direction of the arrow 9 in FIG. 8, and FIG. 10 is a perspective view of the two-door vehicle.

[0008] As shown in FIG.
A vehicle body assembly line 1 for assembling various parts to the vehicle bodies 4C and 2C is provided on a transport path of the vehicle body transport conveyor 100 for randomly transporting the vehicle body 4C of the door vehicle and the vehicle body 2C of the two-door vehicle.
01 is provided. As shown in FIG. 10, the two-door vehicle has a detachable roof R, and the roof R removed from the vehicle body 2C is housed in a trunk T.

A door is located upstream of the vehicle body assembly line 101.
A removal station 102 is provided, where 4
Door car body 4C to front left door D_FL, Front right door
D_FR, Rear left door D_RLAnd rear right door D_RRIs removed
And 2D car body 2C to left door D_L, Right de
A D_RAnd the roof R is removed. Also the body assembly line
Downstream from the door mounting station 103
The door mounting station 103
With door D on the body 4C of a 4-door car_FL, D_FR, D_RL, D _RRBut
Attach it again and attach it to the body 2C of the two-door car.
A D_L, D_RAnd the roof R is attached again.

From the door removal station 102 to the door installation station 103, the doors _DFL , _DFR ,
D _RL, D _RR; door conveyor 200 for conveying the D _L, D _R and the roof R is composed of an overhead conveyor having a plurality of transport hanger 300 for circulating a closed circuit. The door D is located between the stations 102 and 103.
_{FL, D FR, D RL,} D RR; D L, the door subassembly line 400 for assembling the various components D _R and the roof R is provided.

The transport hanger 300 has four pallets P each.
_FL , _PFR , _PRL , and _PRR are supported and transported. 3 pallets P _FL, P _FR, P _RR has a same structure, of which the pallet P _FL is a front left door D _FL or 2-door vehicle four-door car left door D _L, the pallet P _FR are 4 right door D _R of the front right door D _FR or 2-door vehicle door vehicle, the pallet P _RR is 4
Equipped with a rear right door D _RR for door cars. The remaining one pallet P _RL is equipped with a rear left door D _RL of a four-door car or a roof R of a two-door car, and the three pallets P _FL , P
_FR, with structure obtained by adding a means for mounting the roof R to P _RR.

The door removal station 102 is provided with four pallet transfer devices 104, 104,.
Transfer hanger 30 for empty pallets P _FL , P _FR , P _RL , and P _RR
0 and the doors D _FL , D _FR , D _RL ,
D _RR ; D _L , D _R or pallets P _FL , P _FR , P _RL , P _{RR on} which the roof R is mounted are transferred to the transport hanger 300 again. Also has four pallet transfer device 105, 105 ... are provided on the door mounting station 103, the door _{D FL, D FR, D RL} , D RR; D L, pallets equipped with D _R or roof R P _FL , P _FR , P _RL , and P _RR are received from the transport hanger 300, and the empty pallets P _FL , P _FL ,
The _PFR , _PRL , and _PRR are transferred to the transport hanger 300 again.

The door small assembly line 400 is a left small assembly line.
Left and right sub-groups 402
The line 401 is the two palles on the left from the transport hanger 300
P_FL, P_RLOf various parts while receiving and transporting
And the right side small set line 402 is
Two pallets P on the right side of the transport hanger 300_FR, P _RR
Various parts are assembled while receiving and transporting
It is.

Next, the structure of the transport hanger 300 will be described with reference to FIG.

The transport hanger 300 is the door transport conveyor 20
0 along the rail 201, and the rod 30
1 includes a pair of front bogies 302 and rear bogies 303 connected back and forth. Front bogie 302 and rear bogie 303
Is connected to the rail 2 via five rollers 304, 304...
01 and supported by each of the carts 302 and 303.
A frame 306 having an H shape in plan view is supported at the lower part of the frame through two columns 305, 305. Two pins 307, 307 are respectively provided on the left and right sides of the frame body 306 of the front bogie 302.
The two pallets P _FL , P _FR are detachably supported via the pallets, and the two pallets P _RL are provided on the left and right sides of the frame 306 of the rear bogie 303 via two pins 307, 307 respectively. , _PRR are detachably supported.

The transport hanger 300 having the pair of carriages 302, 303 is provided with the plurality of rollers 304, 304,.
Is driven by the motor 308 to run along the rail 201 by itself.

Next, the structure of the pallets P _FL , P _FR , P _RL , and P _RR will be described with reference to FIGS. 3 to 6 and FIGS. Of the four pallets P _FL , P _FR , P _RL , P _RR , 4
The rear left pallet P _RL which can mount both the rear left door D _RL of the door car and the roof R of the two-door car has a different structure from the other three pallets P _FL , P _FR , P _RR . Therefore, the structure of the rear left pallet _PRL will be described.

The pallet P _RL is a substantially rectangular substrate 50 having two pin fitting holes 500, 500 into which the pins 307, 307 implanted in the frame 306 of the transport hanger 300 are fitted.
The first support means 502 for supporting the rear left door _DRL and the second support means 503 for supporting the roof R are provided on the upper surface of the substrate 501.

[0019] As is apparent from FIGS. 8 and 9, the first support means 502 supports the lower edge of the rear left door D _RL a notch of V-shaped disposed in proximity to the upper surface of the substrate 501 A front support member 504 and a rear support member 505;
A front holding member 507 for holding the leading edge of the provided with a notch of V-shaped rear left door D _RL to the upper end of the column 506 erected on one of the front, provided behind the rear supporting member 505 is provided with a rear holding member 508 for holding the trailing edge of the rear left door D _RL a notch of V-shape.

An L-shaped plate 509 and a sliding rod 510 are integrally provided on the rear holding member 508. The sliding rod 510 is slidably supported on the upper end of a swing arm 512 via a spring 511. You. Swing arm 51
2 has a bracket 51 fixed to the upper surface of the substrate 501.
3 and is pivotally supported by the bracket 513.
And the upper end of the swing arm 512 are connected by two links 514 and 515 connected in series. Therefore, the lever 516 provided at the pivot point of the two links 514 and 515 is moved to the position shown in FIG.
When the lever 5 is pulled to the right, the swing arm 512 swings backward, and the rear holding member 508 retreats to the position indicated by the dashed line.
When the user pushes 16 to the left in FIG. 9, the swing arm 512 swings forward, and the rear holding member 508 moves forward to the solid line position.

As is clear from FIGS. 3 and 4, the second support means 503 is provided on the upper surface of the substrate 501 and supports the lower edge of the roof R by the front support member 504 and the rear support member 505 (the front support member 505). A part supporting member 504 and a rear supporting member 505 are shared with the first supporting means 502), a front holding member 517 provided in front of the front supporting member 504 and holding a lower front part of the roof R, and a rear part. Two rear holding rollers 518 and 519 provided behind the support member 505 to hold the rear lower end of the roof R, and a V-shaped cut provided at the upper end of a column 520 erected at the center of the substrate 501. And an upper holding member 521 that holds the upper edge of the roof R with the notch.

The two rear holding rollers 518, 519
A pair of left and right side plates 522 and 522 that support the
A bracket 524 fixed to the upper surface of the bracket 1 and connected to the bracket 513 via a connection reinforcing member 523 is pivotally supported via a pin 525 so as to be swingable. Bracket 5
A spring 527 is contracted between the bolt 526 screwed into the 24 and the side plates 521 and 521, and the side plates 522 and 522 are urged clockwise in FIG. Further, the swinging limit of the side plates 522 and 522 in the counterclockwise direction is regulated by the stopper 528 fixed to the bracket 524.

Referring to FIG. 5 as well, it is apparent that
An arm 5 is connected to the upper end of the support 520 via a pivot 529.
30 is pivotally supported. A slide guide 532 is provided below the bracket 531 provided at the tip of the arm 530.
The slide guide 532 holds a slide bar 533 fixed to the upper holding member 521 so as to be slidable up and down. A pin 5 is provided at the upper end of the slide bar 533.
34, the lower end of the first link 535 having a “U” shape is pivotally supported, and the upper end of this link 535 is connected to the bracket 53.
One end of the second link 537 is pivotally supported by a pin 538 at one end thereof and is pivotally supported by a pin 536 on the upper part of the first link.
The operation grip 5 is attached to the other end of the second link 537.
39 are provided.

As is apparent from FIG.
An arc-shaped long hole 530 ₁ is provided on the lower surface of the base end of the arm 530.
A rotation regulating pin 540 implanted at the upper end of the column 520 is engaged with the elongated hole 530 ₁ . Thus, the rotation of the arm 530 is restricted between the position where the upper holding member 521 holds the roof R and the escape position where the arm 530 is rotated by 90 ° therefrom. And the upper holding member 52
When the arm 1 is not used, the arm 530 is turned to the escape position, and the upper holding member 521 is fixed by engaging with the stopper 541 fixed to the support 520 (FIGS. 8 and 9).
reference).

Since the remaining three pallets P _FL , P _FR , and P _RR do not need to be equipped with the roof R, the above-mentioned pallets P _FL
A front holding member 517 and two rear holding rollers 518, 519 which are means for fixing the roof R from the structure of the _RL.
And members related thereto (side plates 522, 522, connection reinforcing member 523, bracket 524, etc.), upper holding member 52
1 and its related members (posts 520, arms 530,
The bracket 531, the operation grip 539, etc.) are removed. That is, the remaining three pallets P _FL , P _FR , and P _RR are of the structure of the pallet P _RL described above.
Since it has a structure provided with only the first support means 502, a duplicate description thereof will be omitted.

Next, the operation of the embodiment of the present invention having the above-described configuration will be described.

The car body 4C of the 4-door car and the car body 2C of the 2-door car that have completed the painting process are conveyed to the left in FIG. Door transport conveyor 20
The four pallets P _FL , P _FR , P _RL , and P _RR supported by the transport hanger 300 circulating counterclockwise in FIG. 1 are pallet transfer devices 104, 104. The two pallets P _FL and P _{RL on} the left are transferred to the left side of the vehicle body conveyor 100, and the two pallets P _FR and P _{RR on} the right side are transferred to the right side of the vehicle conveyor 100. You.

From this state, for example, the body 2C of a two-door car
Pallet P but when it is carried into the door detaching station 102, the left door D _L is detached from the vehicle body 2C
The _FL, the right door D _R is the being in the pallet P _FR detached from the vehicle body 2C, roof R are mounted respectively detached from the vehicle body 2C to the pallet P _RL. At this time, the remaining one pallet _PRR is left empty.

Next, the first support means 502 is mounted to the left door D _L and the right door D _R to the pallet P _FL and pallet P _FR
The procedure for fixing with will be described with reference to FIGS.
FIGS. 8 and 9 show a state in which the rear left door _DRL of the four-door car is mounted on the pallet _PRL , but the procedure is substantially the same.

First, the swing arm 512 is swung through the pair of links 514 and 515 by pulling the lever 516 rightward in FIG. 9 to move the rear holding member 508 backward. In this state, the lower edge of the left door D _L (rear left door D _RL ) is _{moved to} the front support member 5 of the pallet P _FL (pallet P _RL ).
04 and a rear support member 505, the lever 51
6 is returned to the left. This allows the swing arm 512
There rear retaining member 508 engages the rear edge of the left door D _L advances, the leading edge of the left door D _L is pressed against the front holding member 507 by the pressing force. At this time, the rear holding member 508 and the sliding rod 510 integral with to retreat while compressing the spring 511, the left door D _L between the front holding member 507 and the rear holding member 508 by the elastic force of the spring 511 Clamped in between.

[0031] Also mounted on the pallet P _FR of the right door D _R, it can be carried out in the same procedure and the procedure described above.

The following will describe a procedure of fixing the second support means 503 equipped with a roof R to the pallet P _RL in Figures 3-6.

First, the lower edge of the roof R is supported on the front support member 504 and the rear support member 505 of the pallet _PRL , and the front edge of the lower edge is brought into contact with the front holding member 517. Two rear holding rollers 51
8,519. Subsequently, the upper holding member 521
When the operating grip 539 is pulled down from the chain line position in FIG. 6 to the solid line position in FIG. 6, the slide bar 533 is moved through the first link 535 and the second link 537. Slides downward in the slide guide 532, and the upper holding member 521 provided at the lower end of the slide bar 533 engages with the upper edge of the roof R. When the roof R is pressed downward by the upper holding member 521, the side plates 522 and 522 supporting the two rear holding rollers 518 and 519 counterclockwise from the position of FIG. 8 to the position of FIG. The roof R is firmly clamped in the front-rear direction and the vertical direction.

As described above, the left door D_L, Right door D
_RAnd the roof R are pallets P_FL, P_FR, P_RL
When mounted on the pallet, all pallets are
P_FL, P _FR, P_RL, P_RRPallet transfer device 104, 1
At 04 ..., it is transferred to the transport hanger 300.

Pallet P_FL, P_FR, P_RL, P_RRIn favor of
The transport hanger 300 moves the door transport conveyor 200 in FIG.
Proceed to the left and reach door sub-assembly line 400.
Left from the transport hanger 300 by the pallet transfer device
Two pallets P on the side_FL, P _RLIs the left small group line 401
, Two pallets P on the right_FR, P_RRIs the right small set line
Transferred to 402. Thus, at the door small set line 400
Is three pallets P_FL, P_FR, P_RLLeft door mounted on
D_L, Right door D_RAnd installation of various parts on the roof R
Will be

While the left door D _L , right door D _R and roof R are being assembled on the door sub-assembly line 400, the left door D _L , right door D _R and roof R are removed in parallel. The vehicle body 2 </ b> C of the two-door vehicle receives various parts attached while passing through a vehicle body assembly line 101 provided along the vehicle conveyance la conveyor 100.

At the end point of the door subassembly line 400, 4
Pallet P_FL, P_FR, P_RL, P _RRIs a palette (not shown)
Is transferred again to the transport hanger 300 by the transfer device,
It is transported to the door mounting station 103. Door mounting
Pallet transfer device at the loading station 103
105, 105 ... are pallets from the transport hanger 300
P _FL, P_FR, P_RL, P_RRSeparate the pallets
P_FL, P_FR, P_RL, P_RRFrom the left door D in the reverse order
_L, Right door D_RAnd the roof R are removed,
Assembly of parts on the vehicle assembly line 101 of the conveyor 100
Is mounted again on the vehicle body 2C which has been completed.

On the other hand, door removal from the vehicle body conveyor 100
The body 4C of the 4-door car is carried into the removal station 102.
If the four pieces are transferred from the transport hanger 300,
Let P_FL, P_FR, P_RL, P_RRTo the front left door respectively
D_FL, Front right door D_FR, Rear left door D_RLAnd rear right door
D_RRIs mounted. In this case, each door D_FL, D_FR,
D _RL, D_RRThe procedure for installing is the left door of the aforementioned two-door car.
D_LAnd right door D_RThis is the same as the case where " still,
Rear left door D_RLPallet loaded with_RLAbout Le
The second support means 503 for supporting the
Absent.

Thereafter, the four pallets P_FL, P_FR,
P_RL, P_RRIs the same as the two-door car described above,
Via line 400 to door mounting station 103
Pallet P_FL, P_FR, P_RL, P_RRFrom
Door D removed_FL, D_FR, D _RL, D_RRIs on the body 4C
Reattached.

Thus, in the door small set line 400, 4
Focusing on the man-hour difference between the case of a door car and the case of a two-door car, and using the idle time caused by this man-hour difference, the small group of the roof R of the two-door car is performed, so that no waste time is generated. As a result, production efficiency can be improved, and a special operator and equipment for a small set of the roof R can be omitted.

Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various small design changes can be made.

[0042]

As described above, according to the present invention, the unit member provided in the two-door vehicle is removed from the vehicle body together with the left and right doors, and parts are simultaneously assembled to the unit member and the left and right doors in the small door assembly line. This eliminates the need for a special worker and work place for assembling parts to the unit member, and reduces the man-hour difference between a 4-door car and a 2-door car in a small door assembly line to reduce dead time. Eliminating it can improve production efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic view of an automobile assembling apparatus.

FIG. 2 is a view in the direction of arrows in FIG. 1;

FIG. 3 is a view of a pallet on which a door and a roof of a two-door car are mounted, as viewed in a direction indicated by arrows in FIG. 2;

FIG. 4 is a view in the direction of arrows in FIG. 3;

FIG. 5 is a view in the direction of arrows in FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 5;

FIG. 7 shows a pallet equipped with a door of a four-door car.
7 direction arrow view

8 is a view taken in the direction of an arrow 8 in FIG. 7;

9 is a view in the direction of arrows 9 in FIG. 8;

FIG. 10 is a perspective view of a two-door car.

[Explanation of symbols]

101 vehicle body assembly line 102 door removal station 103 door mounting station 400 door subassembly line 2C body 4C body _{D FL, D FR, D RL} , D RR door D _L, D _R doors R roof (unit member)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 65/06 B62D 65/18

Claims (1)

(57) [Claims] 1. A small door assembly line (400) is provided in parallel with a vehicle body assembly line (101) through which a four-door vehicle body (4C) and a two-door vehicle body (2C) flow, and a door removal station (102). Parts are assembled to the doors (D _FL , D _FR , D _RL , D _RR ; D _L , D _R ) removed from the vehicle body (4C, 2C) by the door sub-assembly line (400), and the door assembly is completed. (D _FL , D _FR , D _RL , D _RR ;
D _L , D _R ) at the door mounting station (103), wherein the unit member (R) is removed from the body (2 C) of the two-door vehicle. and performing member door removed from the body of the (R) the 2-door (2C) (D _L, D _R) them in assembling the components while flowing the door subassembly line (400) with, How to assemble a car.