JP5578837B2 - Automobile assembly equipment - Google Patents

Description

  The present invention relates to an automobile assembly facility for assembling parts such as an engine and a rear axle unit to a vehicle body.

  For example, in an automobile assembly facility (engine mounting device) shown as a conventional example in Patent Document 1, a main line that continuously conveys a vehicle body is disposed so as to be partially along the main line, and an engine unit is mounted. An assembly line (engine mounting line) for assembling the engine unit to the vehicle body transported on the main line while transporting the mounted carriage, and a sub-line (engine unit preparation line) for assembling the engine unit on the preparation carriage. In such an automobile assembly facility, a transfer station for transferring the engine unit assembled in the sub-line from the sub-line preparation carriage to the assembly line mounting carriage is required, which increases the equipment space.

  Therefore, in this document, as shown in FIG. 14, a loop conveyor C that transports the mounting carriage D is arranged so that a part thereof is along the main line M, and the engine unit is mounted on the mounting carriage D of the loop conveyor C. An automobile assembly facility for assembling has been proposed. In this way, while carrying the carriage (mounted carriage) on the loop conveyor, assembling the parts on the carriage and assembling the parts to the vehicle body, the subline preparation carriage as described above is installed on the carriage. Since the process of transferring the parts assembled in step 1 to the mounting carriage on the assembly line is not necessary, the number of assembly steps can be reduced by omitting the transfer process, and the equipment space can be reduced by omitting the transfer station.

JP 2005-66806 A

  However, in the above-mentioned automobile assembly equipment, in the assembly line and sub-line, a plurality of carts arranged on the loop conveyor are conveyed by one driving means (driving conveyor, omitted in FIG. 14). The assembly line and sub-line design will be severely limited.

  For example, when the plurality of carriages D on the loop conveyor C are conveyed by one driving means as described above, the pitch between the plurality of carriages D must be made constant as shown in FIG. In the assembly line, it is necessary to transport the carts in accordance with the pitch of the vehicle body transported in the main line, so the pitch between the carts becomes relatively large. On the other hand, in the subline, it is only necessary to transport the carriages at a pitch that allows the parts to be assembled. Therefore, the pitch between the carriages is usually smaller than the pitch between the carriages in the assembly line. However, if the pitch between the trolleys is constant as described above, it is necessary to set the pitch between all the trolleys in accordance with the pitch in the relatively large assembly line. Equipment space increases.

  Further, when the carriage D on the loop conveyor C is transported by a single driving means, the loop conveyor C needs to have a smoothly continuous shape (track shape in the above-mentioned patent document, see FIG. 14). Since such a loop conveyor C is very close to the main line M in the areas Q1 and Q2 before and after the area T along the main line M, the loop conveyor C becomes an obstacle in the areas Q1 and Q2. As a result, it is difficult for an operator to perform assembly work or install a parts shelf or the like. For this reason, the dead space in an installation increases and an installation space becomes large.

  The problem to be solved by the present invention is to increase the degree of freedom in designing assembly lines and sub-lines in automobile assembly equipment and to reduce equipment space.

In order to solve the above-mentioned problems, the present invention is provided on one side of the main line (M) for conveying the vehicle body and the main line (M), and on the carriage while conveying the first carriage (10). first the component first subline (S _E) to assemble the (E), provided on one side of the main line (M), a second carriage (20) a second component on the carriage while conveying the a second sub-line assembling the (R) (S _R), assembled assembled from below the vehicle body while being conveyed along the first component (E) and a second component (R) of the main line (M) Vehicle assembly equipment including a line (U), sub-line driving means for conveying the carriage (10, 20) in an assembly area provided in each sub-line (S _E , S _R ), and an assembly line ( U), the first component (E) and the second The lift (61, 62) on which the product (R) is mounted, the lifter (60) movable along the main line (M), and the first component (E) mounted The first carriage (10) is carried from the first subline (S _E ) to the assembly line (U), and the second carriage (20) loaded with the second component (R) is moved to the second subline ( S _R ) is carried into the assembly line (U) and arranged upstream of the first carriage (10), and the first carriage (10) is put together with the first part (E) by the lifter (60). after conveyed to the downstream side from the position on the downstream side of the carried-in position from the first sub-line (S _E) is discharged to the first sub-line (S _E), a second carriage by the lifter (60) (20 ) Are separated from the second part (R) and transported downstream, and then the second carriage (20) is transported upstream and transported to the second support. Characterized by discharging the line (S _R).

  As described above, the present invention separately provides the subline driving means for conveying the carriage in the subline and the assembly line driving means for conveying the carriage in the assembly line. Since the conveyance speed of the carriage, the pitch between the carriages, or the layout of each line can be set freely, a plurality of carriages arranged on the loop conveyor are conveyed by one driving means as in Patent Document 1 above. Compared to the case, the degree of freedom in equipment design is increased.

  For example, by providing the sub line driving means and the assembly line driving means separately, the pitch between the carriages in the sub line and the pitch between the carriages in the assembly line can be made different. Thereby, the trolley | bogie of each line can be arrange | positioned with the minimum pitch respectively, and a useless space can be reduced and equipment space can be reduced. Furthermore, since the required pitch between trucks often differs depending on the type of parts to be assembled in the subline, by providing multiple areas in the subline with different pitches between trucks, the types of parts to be assembled in each area The necessary minimum pitch can be set according to the above, and the equipment space can be further reduced.

  Further, by providing the sub-line driving means and the assembly line driving means separately, it is not always necessary to smoothly continue the path for transporting the carriage, for example, the direction of supplying the carriage to the assembly line, and At least one of the directions in which the cart is discharged from the assembly line can be a direction that intersects the conveyance direction of the cart in the assembly line. Thereby, the freedom degree of the layout of each line increases, and it becomes possible to reduce the dead space in an automobile assembly equipment and to reduce equipment space.

In the assembly line U, for example, as shown in FIG. 12, an assembly work area A by an operator is provided on both sides of a carriage (only the lifter 60 is shown). Normally, the carriage supply path U _I to the assembly line U and the carriage discharge path U _O from the assembly line are dead spaces that prohibit entry of workers because the carriage is frequently conveyed. For this reason, as shown in FIG. 12, for example, when the carriage discharge path U _O is provided in the middle of the assembly work area A, the assembly work area A is divided by the carriage discharge path U _O , so that workability is extremely high. Deteriorate. For example, as shown in FIG. 13, if a cart discharge path U _O is provided on the downstream side (left side in the figure) of the assembly work area A, the operator cannot move downstream of the assembly work area A. When the assembling work is not completed in the assembling work area A, it is necessary to stop the entire line and complete the assembling.

Therefore, as shown in FIG. 11, if the bogie supply path U _I and the bogie discharge path U _O of the assembly line U are both arranged on the upstream side (right side in the figure) of the assembly work area A, the bogie supply path U _I. In addition, since the assembly work area A is not divided by the carriage discharge path U _O , it is possible to avoid a decrease in workability. Further, since the worker can move downstream from the assembly work area A, if the assembly work is not completed in the assembly work area A, the assembly work area is kept while the vehicle body is conveyed. The assembling work can be completed in the area downstream of A.

In such an automobile assembly facility, after the parts are assembled to the vehicle body, if an empty carriage is transported to the position of the carriage discharge path U _O by the assembly line driving means, no additional driving means is required. The carriage can be transported to the discharge position.

  As described above, according to the automobile assembly facility of the present invention, the degree of freedom in designing the assembly line and the subline can be increased, and the facility space can be reduced.

It is a top view of automobile assembly equipment. It is a top view of a drawing-in apparatus. (A) is a perspective view of the trolley | bogie 10 and the component trolley | bogie 40, (b) is a perspective view of the state which integrated both. (A)-(c) is a top view of a supply apparatus. It is a side view which shows the assembly | attachment process to the vehicle body of the components in an assembly line. It is a side view which shows the assembly | attachment process to the vehicle body of the components in an assembly line. It is a side view which shows the assembly | attachment process to the vehicle body of the components in an assembly line. It is a side view which shows the assembly | attachment process to the vehicle body of the components in an assembly line. It is a side view which shows the assembly | attachment process to the vehicle body of the components in an assembly line. It is a side view which shows the assembly | attachment process to the vehicle body of the components in an assembly line. It is the top view to which the assembly line was expanded. It is the top view to which the assembly line of the other example was expanded. It is the top view to which the assembly line of the other example was expanded. It is a top view of the conventional automobile assembly equipment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

An automobile assembly facility 100 shown in FIG. 1 is an facility in which an engine unit E is assembled on the front side portion of the vehicle body B, and a rear axle unit R is assembled on the rear side portion of the vehicle body B. The automotive assembly facility 100 includes a main line M to convey a suspended state of the vehicle body B, a engine sub-line S _E assembling the engine unit E, a rear axle sub-line S _R assembling the rear axle unit R, the engine unit E and the rear And an assembly line U that is assembled to the vehicle body B while transporting the axle unit R along the main line M. In FIG. 1, the vehicle body B, the engine unit E, and the rear axle unit R are not shown.

The engine unit E is assembled on the carriage 10 while conveying the carriage 10 in the engine subline S _E. The assembled engine unit E is supplied to the assembly line U by the supply means (the supply device 50 in this embodiment) while being mounted on the carriage 10, and is assembled to the vehicle body B while being conveyed along the main line M. When the engine unit E is assembled to the vehicle body, is supplied to the discharge means empty truck 10 by (assist device 30 in this embodiment) is discharged from the assembly line U again engine subline S _E, on the carriage 10 Then, assembly work of a new engine unit E is performed. In the automotive assembly facility 100, a sub-line driving means for transporting the carriage 10 in the engine sub-line S _E, is provided separately and assembling line driving means for transporting the carriage 10 in the assembling line U.

The engine subline S _E includes a spare transport area S _E0 that transports the empty carriage 10 drawn from the assembly line U by the pull-in device 30 to the first assembly area S _E1, and an assembly of the engine unit E while transporting the carriage 10. a first assembly area S _E1 and the second assembly area S _E2 do the work, and the stock area S _E3 stocking carriage 10 on which an engine unit E assembled, assembling the carriage 10 of the stock area S _E3 line U And a supply device 50 for supplying to the apparatus.

Retraction device 30 is configured to supply to the engine sub-line S _E to discharge an empty carriage 10 from the assembly line U, specifically, as shown in FIG. 2, a holding portion 31 for holding the carriage 10 And a slide mechanism 32 that slides the holding portion 31 in a direction (up and down direction in FIG. 2) that approaches and separates from the assembly line U. The holding part 31 has a pair of engaging claws 31a having a substantially U-shape and a cylinder 31b for moving the pair of engaging claws 31a in directions away from each other (left and right direction in FIG. 2). For the slide mechanism 32, for example, a rodless cylinder is used.

The carriage 10 is retracted by the retracting device 30 as follows. First, in the standby state shown in FIG. 2A, the holding portion 31 is moved backward by the slide mechanism 32, and the cylinder 31b of the holding portion 31 is moved backward. From this standby state, as shown in FIG. 2B, the holding portion 31 is caused to protrude toward the assembly line U by the slide mechanism 32, and the holding portion 31 is disposed between the pair of leg shafts of the carriage 10. At this time, a support portion (for example, a support column with wheels, not shown) that supports its own weight may be provided on the holding portion 31 so that the arm 33 is not bent by the weight of the holding portion 31. Then, as shown in FIG. 2C, the cylinder 31b of the holding portion 31 is protruded, and the pair of leg shafts of the carriage 10 are engaged and held from the inside by the pair of engaging claws 31a. At this time, by making the claw width of the substantially U-shaped engagement claw 31a (the width of both protruding portions) larger than the diameter of the leg shaft of the carriage 10, the engagement claw 31a and the leg axis of the carriage 10 are increased. Even when the position is displaced, the leg shaft of the carriage 10 can be reliably engaged and held by the engagement claw 31a. Thereafter, as shown in FIG. 2D, the holding unit 31 is moved backward by the slide mechanism 32, and the carriage 10 engaged and held by the engagement claw 31a is slid. Thus, an empty truck 10 is discharged from the assembly line U is supplied to the engine sub-line S _E.

In the preliminary transport area S _E0 , an empty cart 10 is transported toward the first assembly area S _E1 by appropriate driving means. In this embodiment, as shown in FIG. 1, the cart 10 in the preliminary transport area S _E0 is used. The meandering line is meandered so that the distance between the second assembling line S _E2 and the straight conveying line connecting the stock area S _E3 increases toward the downstream side. Thus, among the sub-line S _E, even when arranged adjacent the carriage supply unit and the carriage discharging portion of the assembly line U, the first assembly area S _E1 and the second assembly area where assembly of the components is carried out A working space can be secured with S _E2 . The parts truck 40 is attached to the carriage 10 in the middle of the conveyance path of the carriage 10 in the preliminary conveyance area S _E0 . The parts cart 40 is substantially U-shaped in a plan view as shown in FIG. 3A, and can accommodate the cart 10 inside thereof (see FIG. 3B). Various parts (not shown) stocked on the first parts shelf P ₁ are mounted on the parts base 41 provided in the parts truck 40, and the parts carriage 40 loaded with various parts is unloaded from the parts shelf P _1. Attached to the carriage 10.

In the first assembly area S _E1 , for example, a chain conveyor (not shown) is provided as a subline driving means. While conveying the carriage 10 and parts carriage 40 by the chain conveyor, with stocked engine to the second stock shelf P ₂ (not shown) mounted on the carriage 10, stocked transmission to the third stock shelf P ₃ (Not shown) is coupled to the engine mounted on the carriage 10 with bolts. Various parts (for example, an engine wire, a starter, a compressor, etc.) mounted on the parts base 41 of the parts truck 40 are assembled to the engine and the transmission. In the first assembly area S _E1 , various components are assembled from both sides in the direction orthogonal to the conveyance direction of the carriage 10. That is, in the first assembly area S _E1 , the assembly work is not performed from the conveyance direction of the carriage 10, so that the plurality of carriages 10 and the parts carriage 40 conveyed in the first assembly area S _E1 are adjacent to each other. Can be transported.

The carriage 10 and the parts carriage 40 that have reached the downstream end of the first assembly area S _E1 are transferred to the second assembly area S _E2 . At this time, the means for transferring the carriage 10 and the parts carriage 40 from the first assembly area S _E1 to the second assembly area S _E2 is not particularly limited, and in this embodiment, it has the same configuration as the retracting device 30 shown in FIG. It is transferred by extrusion devices 30 ′ and 30 ″ (detailed illustration omitted).

In the second assembly area S _E2 , for example, a floor conveyor (not shown) is provided as a subline driving means. Various parts (for example, suspension members, drive shafts, etc.) are assembled to the engine and transmission while the carriage 10 and the parts carriage 40 are conveyed by the floor conveyor, and the assembly of the engine unit E is completed. At this time, for example, since the drive shaft is assembled to the engine from both sides of the carriage 10 in the conveyance direction, it is necessary to secure a space for an operator to work on both sides of the carriage 10 and the parts carriage 40 in the conveyance direction. Therefore, the pitch between the plurality of carriages 10 in the second assembly area S _E2 is larger than the pitch in the first assembly area S _E1 (see FIG. 1).

When the assembly of the engine unit E is completed in the second assembly area S _E2 , the carriage 10 and the parts carriage 40 are unloaded from the second assembly area S _E2, and the parts carriage 40 is separated from the carriage 10 on which the engine unit E is mounted. Empty parts truck 40 which is separated from the carriage 10 is returned to the first component shelf P _1. The carriage 10 on which the engine unit E is mounted is conveyed to the stock area S _E3 by appropriate means (for example, slope). In the present embodiment, as shown in FIG. 1, three carriages 10 are stocked in the stock area S _E3 .

The cart 10 stocked in the stock area S _E3 is supplied to the assembly line U by the supply device 50. The cart 10 can be supplied from any direction to the assembly line U. In this embodiment, the cart 10 is supplied from a direction orthogonal to the assembly line U. For example, as shown in FIG. 4, the supply device 50 includes a holding portion 51 that engages and holds the leg portion of the carriage 10, and a slide mechanism that slides the holding portion 51 in the carriage supply direction (a direction orthogonal to the assembly line U). 52. The holding portions 51 are arranged at the same pitch as the three carts 10 stocked in the stock area S _E3 , and a pair of substantially U-shaped engaging claws 51 a that engage and hold a pair of leg portions of each cart 10. And a cylinder 51b for projecting or retracting each engaging claw 51a toward the carriage 10. Each holding portion 51 is connected by a support portion 53, and the support portion 53 can be slid by a slide mechanism 52.

Supply of the carriage 10 to the assembly line U by the supply device 50 is performed in the following procedure. First, as shown in FIG. 4A, the holding portions 51 are arranged on the sides of the carts 10 stocked in the stock area S _E3 , and in this state, the cylinder 51b of the holding portion 51 is projected and engaged. The claw 51a engages and holds the leg portion of the carriage 10 (see the dotted line in FIG. 4A). Next, as shown in FIG. 4 (b), the slide mechanism 52 slides the holding portions 51 and the carriage 10 toward the assembly line U, and when the leading carriage 10 is arranged on the assembly line U, the slide mechanism. 52 is stopped. Thereafter, as shown in FIG. 4C, the cylinder 51b of the holding portion 51 is retracted, and the slide mechanism 52 is slid to the side away from the assembly line U (downward in the drawing), and each holding portion 51 is moved. Return to the original position. Before each holding part 51 returns to the original position, a new carriage 10 (a carriage indicated by a dotted line in FIG. 3C) on which the engine unit E is mounted is transported from the second assembly area S _E2 to the stock area S _E3. Will be stocked. The cart 10 is sequentially supplied to the assembly line U by repeating the above operation.

Rear axle unit R is assembled on the carriage 20 while conveying the carriage 20 in the rear axle sub-line S _R. Each component of the rear axle unit R is stocked in the fourth component shelf P ₄ shown in FIG. Rear axle sub-line S rear axle unit is assembled in _R R is supplied to the assembling line U remains mounted on carriage 20, is assembled to the vehicle body B while being conveyed along the main line M. When the rear axle unit R is assembled to the vehicle body B, an empty truck 20 is again supplied to the rear axle sub-line S _R, assembling of a new rear axle units R on the carriage 20 is performed. In the automotive assembly facility 100, a sub-line driving means for transporting the carriage 20 in the rear axle sub-line S _R, and assembling line driving means for transporting the carriage 20 in the assembling line U are separately provided. It should be noted that various driving means for the engine subline S _E can be appropriately employed as the sub-line driving means for the carriage 20 in the rear axle sub-line S _R , and detailed description thereof will be omitted.

  Next, the procedure for assembling the engine unit E and the rear axle unit R to the vehicle body B in the assembly line U will be described with reference to FIGS. Here, the front (left side in the drawing) of the main line M in the conveyance direction of the vehicle body B is simply referred to as “front”, and the opposite side (right side in the drawing) is referred to as “rear”.

  In the assembly line U, the engine unit E and the rear axle unit R (represented in a simplified form as a rectangle in the figure) are lifted while being conveyed in synchronism with the vehicle body B by the assembly line driving means. Assemble from below. In the present embodiment, as shown in FIG. 5, a lifter 60 including a pair of lifting platforms 61 and 62 is provided as an assembly line driving unit. The lifter 60 can reciprocate back and forth in the assembly line U. The elevators 61 and 62 can be moved up and down by automatic control of a control unit (not shown) or by an operator's switch operation.

First, from the engine subline S _E and the rear axle subline S _R , a carriage 10 equipped with an engine unit E and a carriage 20 equipped with a rear axle unit R are supplied to predetermined positions on the assembly line U. The carriage 10 and the carriage 20 The lifter 60 sinks below (see FIG. 5). Thereafter, as shown in FIG. 6, the pair of lifting platforms 61 and 62 provided on the lifter 60 are raised, the engine unit E and the rear axle unit R are lifted, and these components are mounted on the lifter 60. In the present embodiment, the engine unit E is lifted together with the carriage 10, and the rear axle unit R is lifted separately from the carriage 20.

When the vehicle body B is transported by the overhead conveyor 70 to a position above the lifter 60 on which the engine unit E and the rear axle unit R are mounted, the lifter 60 is transported forward in synchronization with the vehicle body B (see FIG. 7). At the same time, the lifts 61 and 62 of the lifter 60 are further raised, and the engine unit E and the rear axle unit R are assembled at predetermined positions on the vehicle body B. Empty carriage 20 the rear axle unit R has been separated, is discharged from the assembly line U in separate driving means (not shown), it is supplied to the rear axle sub-line S _R.

When the assembly of the engine unit E and the rear axle unit R is completed, the lifter 60 is stopped and the lifting platforms 61 and 62 are lowered to the intermediate position (see FIG. 8). Thereafter, the lifter 60 is conveyed rearward and stopped at the discharging position of the carriage 10 (see FIG. 9). At this discharge position, the lifting platforms 61 and 62 of the lifter 60 are lowered to the lower limit position to separate the lifting platform 61 and the carriage 10 and ground the carriage 10 (see FIG. 10). By this time, new carts 10 and 20 equipped with the engine unit E and the rear axle unit R are supplied to predetermined positions on the assembly line U. After that, the lifter 60 is further conveyed rearward to be submerged below the new carriages 10 and 20, and the carriage 10 left at the discharge position of the assembly line U is drawn into the retracting device 30 (see FIGS. 1 and 3). ) Is discharged from the assembly line U and is supplied to the preliminary transfer area S _E0 of the engine subline S _E.

  As described above, in the automobile assembly facility 100, the parts (the engine unit E and the rear axle unit R) are assembled and assembled to the vehicle body B on the carriage while circulating the carriage on the subline and the assembly line. Appended. Thereby, the operation | work and installation which transfer each component between trolley | bogies are abbreviate | omitted, and an easy operation and simplification of an installation are achieved.

In this way, in the equipment for circulating and transporting the carriages 10 and 20, sub-line driving means (the chain conveyor in the first assembly area S _E1 and the floor conveyor in the second assembly area S _E2 ) for conveying the carriages 10 and 20 in the sub-line; By providing separately the assembly line driving means (lifter 60) for conveying the carriages 10 and 20 in the assembly line U, the degree of freedom in designing the equipment can be increased. For example, since the pitch between the carriages 10 in the engine subline S _E can be made different from the pitch between the carriages 10 in the assembly line U, the minimum pitch can be set for each line. It can be made compact. Further, as described above, by providing the subline driving means in the first assembly area S _{E1 and} the subline driving means in the second assembly area S _E2 separately, the pitch between the carriages 10 can be individually set in each assembly area. Therefore, the equipment can be further compacted by setting the pitch between the carriages 10 to the minimum necessary value in each assembly area.

Further, by providing the subline driving means and the assembly line driving means separately, it is not necessary to smoothly connect the engine subline S _E and the assembly line U from the direction intersecting the assembly line U ( In this embodiment, the cart can be supplied and discharged (from a right angle direction). As a result, the degree of freedom of the layout of each line (particularly, the direction of supply and discharge of the carriage to the assembly line U) is increased, and the dead space in the automobile assembly facility can be reduced and the equipment space can be reduced.

In the present embodiment, as shown in an enlarged view in FIG. 11, both the carriage supply path U _I to the assembly line U and the truck discharge path U _O from the assembly line U are assembled in the assembly work area A. It is provided on the upstream side. Thereby, the assembly work area A is not divided by the bogie discharge path U _O or the bogie supply path U _I , and workability is ensured. Further, since the trolley discharge path U _O and carriage supply path U _I on the downstream side of the assembly work area A is not, even if no complete assembly work in the assembly work area A, the operator together with the conveying of the vehicle body B Since the assembling work can be continued while moving from the assembling work area A to the downstream side, the assembling can be completed without stopping the line.

Thus, when the cart discharge path U _O is provided on the upstream side of the assembly work area A, it is necessary to return the cart 10 conveyed to the downstream end of the assembly line U to the cart discharge path U _O. . In this embodiment, since the trolley 10 that has been emptied is transported to the position of the trolley discharge path U _O by the lifter 60, the trolley 10 is transported to the discharge position of the assembly line U without providing a separate transport device. be able to.

100 Automobile assembly facility 10, 20 Carriage 30 Pull-in device 40 Parts cart 50 Supply device 60 Lifter 61, 62 Lifting platform M Main line S _E Engine subline S _E0 Preliminary transfer area S _E1 First assembly area S _E2 Second assembly area S _E3 Stock area S _R Rear axle subline U Assembly line A Assembly work area B Body E Engine unit R Rear axle unit

Claims (4)

A main line (M) that conveys the vehicle body and a first line (M) that is provided on one side of the main line (M) and that assembles the first component (E) on the carriage while conveying the first carriage (10) . A subline (S _E ) and a second subline (S _R ) that is provided on one side of the main line (M) and assembles the second component (R) on the cart while conveying the second cart (20). ) And an assembly line (U) for assembling the first part (E) and the second part (R) along the main line (M) to the vehicle body from below. There,
Sub-line driving means for conveying the carriage (10, 20) in the assembly area provided in each sub-line (S _E , S _R ) , the assembly line (U) , the first part (E) and the first part A lift (61, 62) on which two components (R) are mounted, a lifter (60) movable along the main line (M),
The first carriage (10) loaded with the first part (E) is carried into the assembly line (U) from the first subline (S _E ), and the second carriage loaded with the second part (R) The carriage (20) from the second subline (S _R ) to the assembly line (U) and arranged upstream of the first carriage (10),
After the first carriage (10) is transported to the downstream side together with the first component (E) by the lifter (60), the first carriage (10) is moved from the position downstream from the position carried in from the first subline (S _E ). 1 to the sub-line (S _E )
The second part (R) separated from the second carriage (20) is mounted on the lifter (60) and conveyed downstream, and then the second carriage (20) is conveyed upstream and the second subline. Automobile assembly facility that discharges to (S _R ) . The carriage in the assembly area provided on the first sub-line (S _E) (10) and the pitch between the in assembling lines (U) carriage (10) between the claim 1, wherein having different pitch of Car assembly equipment. The automobile assembly facility according to claim 2, wherein a plurality of assembly areas (S _E1 , S _E2 ) having different pitches between the first carriages (10 ) are provided in the first subline (S _E ) . Carriage supply passage for supplying the carriage (10, 20) to the assembly line (U), and the carriage discharge passage for discharging the carriage (10, 20) from the assembly line (U), the set The first carriage (10) that is emptied after the first part (10) is assembled to the vehicle body after being arranged upstream of the assembly work area in the attachment line (U ) is lifted (60) The automobile assembly facility according to any one of claims 1 to 3, wherein the vehicle assembly equipment is transported to a position of the carriage discharge path.

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