JPH06320360A - Method and device for assembling article - Google Patents

Abstract

PURPOSE:To save space and reduce cost by eliminating a circulation conveyance form for a truck when car body parts held on the truck are conveyed along a line and during the conveyance, parts are temporarily attached and substantially attached so as to assemble a car body and to generalize a process by effecting temporary attachment and substantial setting on the same line. CONSTITUTION:Trucks 3A and 3B for exclusive use to position and hold different kinds of car bodies W for temporarily attaching parts are caused to shuttle between the part feed station S1 and a temporary attachment station S2 of a line 1. A common truck 10A for holding the car body W is caused to shuttle between a temporary attachment station S2 and a substantially attaching station S3. After a part positioned and held on the truck 3A (3B) for exclusive use is temporarily attached at the temporary attachment station S2 by means of a weld robot 29, the part is transferred to a side rotation jig 24 to effect positioning and substantial attachment. At the substantially attaching station S3, the part is transferred from the common truck 10A to the side rotation jig 31 and positioned and further substantially attached by means of the weld robot 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling method and an assembling apparatus for articles, and more particularly to an article suitable for mixed production of various kinds of vehicle bodies and vehicle body parts as vehicles.

[0002]

2. Description of the Related Art Conventionally, as a vehicle body assembling apparatus of this type, while a plurality of carriages each having a jig for positioning and holding body parts are circulated along a loop type transfer line, The circulation type (circulation type) of welding and assembling is generally well known. That is, in this one, at a predetermined station of the assembly line, for example, a process such as temporary tacking by welding of parts and over-pressing is performed, and when the process is completed,
The dolly is transported to the next station and the next process is performed there. When all the processes are completed at the last station and the car body is completed, the car body is unloaded from the bogie and the emptied bogie is returned to the first station of the assembly line via the collection line.

[0003]

By the way, a jig for positioning and holding for temporary attachment of parts is generally complicated. Because of the interference, it is actually difficult to re-strike. In addition, since the jig for positioning and holding for the temporary attachment of the parts is complicated, there is a problem that the equipment for the circulation transfer type becomes extremely large and high cost is required. Therefore, at present, the temporary attaching process is not the same as the assembling line used for the subsequent over-pressing process, and a dedicated line of non-circulating transfer type is adopted and is not generalized.

On the other hand, since the over-strike process for transporting the carriage is of the circulation transport type, it is unavoidable that large-scale equipment, high cost, or a large installation space is required. From this point, there is room for improvement. is there.

The present invention has been made in view of the above points, and an object thereof is to temporarily join an assembly line in the case of mixing and assembling various kinds of articles by changing the structure of the carriage and the form of conveyance thereof. It is intended to generalize all the steps of the main joining and to save the space and reduce the cost by eliminating the circulating transportation method of the transportation cart.

[0006]

In order to achieve the above object, in the present invention, the carriage is basically moved so as to come and go only between the adjacent stations of the assembly line. Then, the trolley is divided into a common trolley having a positioning jig common to the components of a plurality of types of articles, and a dedicated trolley having a jig dedicated to each type of article. A plurality of units are provided so that they can come and go between the upstream stations of the assembly line, while one common carriage can be used regardless of the number of kinds of articles, and the common carriage can come and go between the downstream stations of the assembly line.

That is, the invention of claim 1 is a method of assembling an article, in which a trolley is conveyed on an assembly line to assemble a plurality of types of articles, and the parts constituting the article are positioned and held for temporary attachment of the parts. A plurality of types of dedicated carriages provided with dedicated jigs and at least one common carriage provided with a common jig common to a plurality of types of articles are prepared.

First, one of the plurality of types of dedicated carriages is supplied to the component supply station of the assembly line by the carriage supply means, and the components are supplied on the dedicated carriage and positioned and held by the dedicated jig.

Next, the dedicated carriage is transferred to the temporary joining station to temporarily join the parts, and the temporarily joined parts are transferred from the dedicated carriage to the first positioning means for positioning and holding, and a part of the parts After the main bonding is carried out, the first positioning means transfers it onto the common carriage and the common jig is used to hold it.

After that, the common carriage is transferred to at least one main joining station, the parts are transferred from the common carriage to the second positioning means, positioned and held, and the rest of the parts are main joined.

As described above, the invention of claim 3 is an apparatus for assembling an article, wherein a trolley is conveyed on an assembly line to assemble a plurality of types of articles. According to the present invention, a plurality of types of dedicated carriages having dedicated jigs for positioning and holding parts constituting articles and a common jig common to a plurality of types of articles are provided. And a trolley.

A trolley supply means for supplying one of the plurality of types of dedicated trolleys to the assembly line is provided.

In the assembly line, a component supply station, a temporary joining station located on the assembly line downstream of the component supply station, and at least one main joining station located downstream of the temporary joining station. To provide.

The component supply station is a station for supplying a component onto the dedicated carriage supplied by the carriage supply means and positioning and holding the component by a dedicated jig therein.

Further, the temporary joining station has first positioning means for positioning and holding the parts for temporary attachment,
The parts positioned at the parts supply station are temporarily joined on a dedicated carriage, the temporarily joined parts are transferred from the dedicated carriage to the first positioning means and positioned, and a part of the parts is main joined. After that, it is transferred from the first positioning means onto the common carriage and mounted and held by a common jig.

Further, the main joining station has second positioning means for positioning and holding the parts, the parts on the common carriage are transferred to the second positioning means and positioned, and the remaining parts of the parts are main joined. It is a thing.

According to a fourth aspect of the invention, the special cart is constructed so that the parts temporarily joined at the temporary joining station are transferred to the first positioning means and then immediately returned to the parts supply station. Is configured to immediately return to the station upstream of the main joining station after the parts that have been main joined at the main joining station are transferred to the second positioning means.

In the inventions of claims 5 to 7, the construction of the trolley supply means is embodied. That is, in the invention of claim 5,
The trolley supply means has a plurality of trolley storages for storing different types of dedicated trolleys on the side of the assembly line,
It is configured such that a dedicated carriage is selectively supplied from the carriage storage portion to the assembly line.

According to the invention of claim 6, the trolley supply means has a turntable in which a plurality of trolley storages for respectively storing different types of dedicated trolleys are arranged in the circumferential direction. By rotation, one trolley storage unit is positioned near the assembly line, and a dedicated trolley is supplied from the trolley storage unit to the assembly line.

Further, according to the invention of claim 7, the carriage supply means has a lifting means in which a plurality of carriage storage units respectively storing different types of dedicated carriages are arranged so as to be able to move up and down. Part 1 by moving the storage unit up and down
Position the two trolley storage units at the height of the assembly line,
The cart is configured to be supplied to the assembly line from the cart storage unit.

According to an eighth aspect of the present invention, each of the positioning means is rotatably supported by a support member provided upright on both sides of the assembly line and an axis parallel to the assembly line direction. A plurality of types of support arms provided so as to correspond to different types of articles, respectively, and support arms of the same type in each support are stopped substantially horizontally toward each other on the assembly line side, It is configured to position and support the article between the support arms.

According to a ninth aspect of the present invention, each of the dedicated carriage and the common carriage is provided with a lifter for raising a component on the carriage to a height position where it can be transferred to and from the support arm of the positioning means.

In the invention of claim 2 or 10, the article is a vehicle body or a vehicle body part of a vehicle.

According to the eleventh aspect of the invention, the vehicle body or the vehicle body component is joined by automatic welding.

According to the twelfth aspect of the invention, a plurality of station groups each including a component supply station, a temporary joining station and a main joining station are arranged in the assembly line.

[0026]

With the above-mentioned structure, in the invention of claim 1 or 3, when a desired one type of dedicated carriage is selected from a plurality of types of dedicated carriages by the carriage supply means and supplied to the assembly line, The dolly is conveyed to a parts supply station in the assembly line, where the parts are supplied onto a special dolly, and the parts are positioned and held by a special jig. After that, the dedicated carriage is transported to the next temporary joining station while holding the components by the dedicated jig, and the components are temporarily joined there. After that, the temporarily joined components are transferred from the dedicated carriage to the first positioning means and positioned, and in the positioned state, a part of the components are permanently joined. After that, the parts are first
It is transferred from the positioning means onto a common carriage and held by a common jig. This common carriage is transported from the temporary joining station to the next at least one main joining station,
Therefore, the component is transferred from the common carriage to the second positioning means and positioned, and the remaining part of the component is main-bonded in the positioned state.

When articles of the same type are successively assembled, the dedicated carriage that has become empty due to the transfer of the parts to the first positioning means at the temporary joining station returns from the temporary joining station to the original parts supply station. Then, the parts of the next article are supplied and positioned and held by a dedicated jig. Further, when the common carriage is emptied by the transfer of the article to the second positioning means at the main joining station, it returns to the original temporary joining station and the next component transfer is performed. Thereafter, the same traffic as above is repeated between the adjacent stations for each carriage.

On the other hand, when changing the type of articles to be assembled, the movement of the common carriage does not change, but after the special carriage is emptied at the temporary joining station, it is supplied from the temporary joining station over the parts supply station by the carriage. It returns to the means and is exchanged for a new type of special carriage by the carriage supply means. This new exclusive carriage is conveyed to the parts supply station in the same manner as described above, parts of a new type of article are supplied there, and the exclusive jig holds and positions the parts for temporary attachment.

Therefore, in these inventions, when assembling a plurality of types of articles, it is necessary to replace only the dedicated carriage and each positioning means in accordance with them, and the labor for changing types can be greatly reduced. . In addition, since it is easy to exchange the carts according to the types of articles in this way, lot production is not required when producing many types of articles, and mixed production of articles can be efficiently performed on one assembly line. You can

Further, basically, the dedicated carriage is provided between the parts supply station and the temporary joining station of the assembly line,
Also, since the common carriage only reciprocates between the temporary joining station and the main joining station, the circulation transport type of the dedicated and common carriages is not required, and in terms of layout,
It is possible to mix and assemble various kinds of articles in a small installation area, and it is possible to reduce costs.

Further, the temporary joining of the components is performed by positioning and holding the components on a dedicated carriage by a dedicated jig, and the subsequent main joining of the components is performed by the first and second positioning means at the temporary joining and main joining stations, respectively. Since the positioning is performed, the complicated special jig does not hinder the main joining as in the case of the main joining of the temporarily joined parts as they are on the dedicated dolly. The steps can be performed on the same assembly line, and all the steps for assembling the parts can be generalized.

In the invention of claim 4, when the parts temporarily joined at the temporary joining station are transferred to the first positioning means, the dedicated carriage immediately returns to the parts supply station. In addition, in the common carriage, immediately after the components that have been permanently joined at the main joining station are transferred to the second positioning means, immediately on the upstream side station of the main joining station, that is, the component supply station or another main joining station. Return. Due to such movement of the carriage, the carriage does not interfere with the main joining of the components at each station, and the joining work can be easily performed.

According to the fifth aspect of the present invention, when supplying the dedicated trolley to the assembly line, the trolley supply means selects the target dedicated trolley from the plurality of trolley storages arranged on the side of the assembly line. Is supplied to. Further, in the invention of claim 6, the turntable of the trolley supply means is rotated, and one target trolley storage is selected from the plurality of trolley storages and is positioned at a position near the assembly line. In this state, the dedicated carriage is supplied to the assembly line from the carriage storage unit. Further, in the invention of claim 7, the trolley storage section is moved up and down by the lifting means in the trolley supply means, and one of the plurality of trolley storage sections is positioned at the height position of the assembly line. In this state, a dedicated carriage is supplied from the carriage storage unit to the assembly line. Therefore,
In these inventions, the specific configuration of the cart supply means can be easily obtained.

In the eighth aspect of the invention, in each of the positioning means, support arms of the same type supported by the supports on both sides of the assembly line are stopped substantially horizontally toward the assembly line side. The article is positioned and supported between the support arms. Therefore, the positioning means for positioning and holding the articles during the main joining can be easily obtained.

According to the ninth aspect of the invention, since each of the dedicated carriage and the common carriage is provided with a lifter for raising a component on the carriage to a height position where it can be transferred to and from the supporting arm of the positioning means, the carriage and each positioning It is possible to easily transfer parts to and from the means.

According to the invention of claim 2 or 10, since the article is a vehicle body or body parts of a vehicle, mixed production can be easily performed when assembling a plurality of types of vehicle bodies or body parts.

According to the twelfth aspect of the present invention, since a plurality of station groups each including the component supply station, the temporary joining station, and the main joining station are arranged in the assembly line, even if there are a plurality of parts, each station group has a plurality of stations. It suffices to disperse and supply the components to the component supply stations. For example, when some of the components are joined and then the remaining components are additionally joined, it is possible to easily deal with them.

[0038]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic view of a vehicle body assembly apparatus according to an embodiment of the present invention as viewed from above, and FIG. 2 is a schematic view of the vehicle body assembly apparatus as viewed from the front. Two types of underbodies W, W as articles excluding pillars and the like are spot-welded and assembled. As shown in FIG. 11, each underbody W is basically a front body assembly W4 including left and right front fenders W1, W1, a front cross member W2, a dash panel W3, etc., while front and rear floor panels W5, W6, The rear end panel W7 and the front and rear side sills W8 and W9 are assembled, and although not shown, all or part of them is different for each type.

In FIGS. 1 and 2, reference numeral 1 denotes an assembly line for the underbody W, and the line 1 flows toward the right side in the figures to assemble the underbody W. Assembly line 1
Consists of a pair of rails 2 and 2 on the left and right.
The carts 3A to 3D and 10A to 10D, which will be described later, are conveyed on the top. In the assembly line 1, from the upstream side, the first component supply station S1, the first temporary attachment station S2 (temporary joining station), the first overfilling station S3 (main joining station), the second component supply station S4, the second
Temporary station S5 (temporary joining station), second
And 7 stations of the third over-stretching stations S6 and S7 (both of which are main joining stations) are formed, and as shown in FIG.
Between the first temporary mounting station S2 and the first temporary mounting station S2.
3 or 4 between 4 and the second tacking station S5
The dedicated carriages 3C and 3D are designed to come and go respectively.

Further, the first common carriage 10 is provided between the first tacking station S2 and the first overfilling station S3.
A is the second common carriage 10B between the first overfilling station S3 and the second component supplying station S4, and the third common carriage is between the second tacking station S5 and the second overfilling station S6. 10C is the second
The fourth common carriage 10D moves between the third over-strike stations S6 and S7.

The first to the fourth dedicated carriages 3A to 3D have the same basic structure, and only the portions corresponding to the different portions of the two types of underbody W, W are different, so in this embodiment. , The first dedicated carriage 3A will be described, and the other dedicated carriages 3B to 3D will be described as the first dedicated carriage 3A.
The same parts as those in A are designated by the same reference numerals and the description thereof will be omitted. That is, as shown in FIG. 9, the first dedicated carriage 3A has a lower surface 4
.. (see FIG. 6) supported by wheels 2, 5 ... Rolled on rails 2, 2 of the assembly line 1 are supported at one corner. A jig base 6 having the same shape as that of the jig base 6 is mounted on and fixed integrally. On the periphery of the jig base 6, a plurality of types of dedicated jigs 7, 7 for positioning and clamping component parts of the underbody W for each type of underbody W, for temporary attachment of parts for each W, ... is erected. Also, in the center,
A lifter 8 is attached to raise an underbody W on the dedicated carriage 3A to a height position where it can be transferred to and from support arms 26, 26 of a side rotation jig 24 described later.

On the other hand, the first to fourth common carriages 10A to 10D
Mainly has a function of transporting the underbody W, and the basic configurations thereof are the same as each other. Here, the first common carriage 10A will be described, and the second to fourth common carriages 10B to 10D will be described. The same parts as those of the first common carriage 10A are designated by the same reference numerals and the description thereof will be omitted. This first
As shown in FIG. 10, the common carriage 10A is provided with a rectangular plate-shaped carriage main body 11 in which wheels (not shown) rolling on the rails 2 and 2 of the assembly line 1 are supported at four corners of the lower surface. ,
This dolly body 11 has a jig base 12 having the same shape as that of the dolly body 11.
Is mounted and fixed integrally. This jig base 1
Four common jigs 13, 13, ... Which clamp and hold the components of the underbody W in common to each type of underbody W are provided at the corners above 2. Further, in the central portion, an underbody W on the common carriage 10A is provided with supporting arms 26, 2 in each of side rotating jigs 24, 31 described later.
6 is attached with a lifter 14 that is raised to a height position where it can be transferred.

As shown in FIGS. 1 and 2, one of the above-mentioned two types of first and second dedicated carriages 3A and 3B is assembled into an assembly line 1.
There is provided a first trolley supply device 16 for supplying to the first component supply station S1. This cart feeder 16
Has two trolley storages 17, 17 arranged on both the left and right sides of the first component supply station S1.
And the second dedicated carriages 3A and 3B are stored. And
Each of the trolley storage units 17 is connected to the rails 2 and 2 of the assembly line 1 and the dedicated trolleys 3A and 3B by communication rails 18 and 18 so that the trolley storage units 17 can communicate with each other via the communication rails 18 and 18. First or second dedicated carriage 3A, 3B
Is selectively supplied to the assembly line 1.

Further, the third and fourth dedicated carriages 3C, 3
A second carriage supply device 20 is provided for supplying one of the D's to the second component supply station S4. This second trolley feeder 20 is similar to the first trolley feeder 16 described above, and has two trolley storages 21, 21 arranged on both left and right sides of the second component feeding station S4. The third and fourth dedicated carriages 3 are respectively stored in the storage units 21 and 21.
C and 3D are stored, and the third or fourth dedicated carriages 3C and 3 from the respective carriage storage portions 21 via the connection rails 22 and 22.
D is selectively supplied to the assembly line 1.

At the seven stations S1 to S7 in the assembly line 1, the steps described below are performed.

(First Component Supply Station S1) In the first component supply station S1, the first trolley supply device 1 is used.
On the dedicated carriage 3A (or 3B) supplied by the operator 6, the operator constructs the front body assembly W4 shown in FIG. 11 (a) (left and right front fenders W1, W1).
, Front cross member W2, dash panel W3
Etc. are supplied and set, and among them, the dedicated parts corresponding to the vehicle type are positioned and clamped by the dedicated jigs 7, 7, ... On the jig base 6.

(First tacking station S2) This first
At the tacking station S2, a first side rotating jig as a first positioning means for holding a positioning clamp for temporarily tacking the components of the front body assembly W4 for each kind of underbody W, W for welding. Ingredient 2
4 are installed. The side rotating jigs 24 are two pairs of bases 25, 25, ... (Supports, which are erected on the left and right sides of the assembly line 1 at intervals in the direction of the assembly line 1, respectively. , FIG. 8, FIG. 12, FIG. 12 and FIG. 13, two bases 25 on the side of the assembly line 1 are shown for simplification.
25 are collectively shown), and as shown in FIG. 6, a plurality of types (three types in the illustrated example) of support arms 26, 2 which are different for each vehicle type are provided at the upper end of each base 25.
6 are rotatably supported by a shaft 27 parallel to the assembly line 1. The support arms 26 are mounted on the assembly line 1
It stops at a position that protrudes substantially horizontally toward the side,
The front body assembly W4 is positioned and clamped in cooperation with a support arm 26 of the same type on the base 25 located on the opposite side of the assembly line 1.

On the left and right sides of the assembly line 1, two polar type welding robots 29, 29 located on the back side of the bases 25, 25 of the above-mentioned pairs are respectively installed, and their arms 29a have their tip ends. A welding gun 29b for spot welding the front body assembly W4 is attached to this.

Then, this first tacking station S2
Then, at the above-mentioned first component supply station S1, the dedicated carriage 3
The front body assembly W4, which is positioned and held on the A (or 3B) by the dedicated jigs 7, 7, ... Is temporarily attached by the welding robots 29, 29 in that state, and then the temporarily attached front body Assembly W4
Is lifted by the lifter 8 of the dedicated trolley 3A (or 3B) and transferred to the side rotation jig 24.
The supporting arms 26, 26 on the position 25 are positioned and supported, and in the positioned state, the spot welding is further increased by the same welding robot 29, 29. The empty trolley 3A (or 3B) is returned to the first component supply station S1 immediately after the front body assembly W4 is transferred to the side rotating jig 24, and is replaced with the first common trolley 10A to perform the welding. The front body assembly W4 struck by the robots 29, 29 is transferred onto the first common carriage 10A while being received by the lifter 14, and the common parts therein are held by the common jigs 13, 13 ,. It is like this.

(First over-strike station S3) This first
As in the case of the first tacking station S2, the additional-strike station S3 has a second side rotating jig 31 as a second positioning means for positioning and clamping and holding the components of the front body assembly W4, and its rear side. A total of two welding robots 32, 32 located at are installed. The side rotating jig 31 and the welding robots 32 have the same structure as the first side rotating jig 24 and the welding robots 29 in the first tacking station S1 (see FIG. 6). Figure 6
The same parts as those of the above are denoted by the same reference numerals and detailed description thereof will be omitted.

At this station S3, the front body assembly W4 held by the common jigs 13, 13, ... On the first common carriage 10A at the first tacking station S2 is moved by the lifter 14 of the carriage 10A. It is lifted up and transferred to the side rotation jig 31, and the positioning arms are supported by the support arms 26, 26 on both the bases 25, 25, and the welding robots 32, 32 ,.
Increases spot welding. The emptied first common carriage 10A is immediately returned to the first tacking station S2 after the front body assembly W4 is transferred to the side rotating jig 31, and is replaced with the second common carriage 10B. Then, the front body assembly W4 with the increased welding is transferred onto the second common carriage 10B while being received by the lifter 8, and the common jigs 13 and 1 are then transferred.
It is designed to be held by 3, ...

(Second Component Supply Station S4) In this station S4, the first component supply station S
Same as 1 above, from the first over-stretching station S3 to the second
The front body assembly W4 conveyed by the common carriage 10B is lifted by the lifter 14 of the second common carriage 10B, and the third body similar to the first side rotating jig 24 is lifted.
It is transferred to the side rotation jig 46, and both bases 25, 2
It is positioned and held by the support arms 26, 26 on the upper part 5. Meanwhile, the emptied second common trolley 10B is transferred to the side rotating jig 46 of the front body assembly W4, then returned to the first struck station S3, and replaced with the third or fourth dedicated trolley 3C, 3D. . Then, the front body assembly W4 is mounted on the dedicated carriage 3C (or 3).
D) It is transferred onto the lifter 8 while receiving it, and the operator attaches the remaining new parts of the underbody W (front and rear floor panels W5 and W6, rear end panel W7 and front and rear side sills W8 and W9). While setting the underbody W, the jig base 6
The dedicated jigs 7, 7, ... Above are positioned and held.

(Second temporary fixing station S5) The second temporary fixing station S5 is the first temporary fixing station S2.
The same process is performed, and a total of two polar-coordinate welding robots 35, 35, which are positioned one by one on the back side of the fourth side rotating jig 34 as the first positioning means, are installed. . The fourth side rotating jig 34 and each welding robot 35 have the same structure as the first side rotating jig 24 and each welding robot 29 of the first tacking station S1 (see FIG. 6). Therefore, the same parts as those in FIG. 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

At this station S4, the dedicated carriage 3C (or 3) at the second component supply station S4.
D) Welding robots 35, 3 with the underbody W positioned on the dedicated jig 7, 7, ...
5, the underbody W is transferred to the side rotation jig 34 by the lifter 7 of the dedicated carriage 3C (or 3D), and the support arms 26, 26 on both sides of the line 1 are temporarily attached.
The two robots are positioned and supported by each other, and in this state, the welding robots 35, 35 perform additional hammering. Meanwhile, the emptied exclusive carriage 3C (or 3D) is immediately returned to the second component supply station S4 after being transferred to the side rotating jig 34 of the underbody W, and instead the third common carriage 10C is carried in. The underbody W of the lifter 14 is mounted on the carriage 10C.
It is transferred while being received by and is held by the common jigs 13, 13, ....

(Second Overprinting Station S6) Like the first overprinting station S3, the second overprinting station S6 serves as a second positioning means for positioning and clamping the components of the underbody W. A five-side rotating jig 37 and a total of two welding robots 38, 38 located on the back side thereof are installed. The side rotating jig 37 and the welding robots 38 have the same structure as the first side rotating jig 24 and the welding robots 29 of the first tacking station S1 (see FIG. 6). The same parts as those in FIG. 6 are designated by the same reference numerals and detailed description thereof will be omitted.

At this station S6, the underbody W held on the third common carriage 10C at the second tacking station S5 is moved to the lifter 1 of the carriage 10C.
4 is lifted by 4 and transferred to the side rotation jig 37, positioned and supported between the support arms 26, 26 on both bases 25, 25, and spot welding is additionally performed by the welding robots 38, 38. Meanwhile, the emptied third common carriage 10C is immediately returned to the second tacking station S5 after being transferred to the side rotating jig 37 of the underbody W, and is replaced with the fourth common carriage 10D. Thereafter, the increased underbody W is transferred onto the fourth common carriage 10D while being received by the lifter 14, and the common jigs 13, 13,
It is designed to be held by.

(Third Reinforcement Station S7) Similar to the second intensification station S6, the third intensification station S7 serves as a second positioning means for locating and clamping the components of the underbody W. A six-side rotating jig 40 and a total of two welding robots 41, 41 located on the back side thereof are installed. The side rotating jig 40 and each welding robot 41 are also denoted by the same reference numerals as in FIG. 6, and detailed description thereof will be omitted.

At this station S7, the underbody W held on the fourth common carriage 10D at the second over-stretching station S6 is lifted by the lifter 14 of the carriage 10D and transferred to the side rotation jig 40, and its support. Spot welding is additionally performed by the welding robots 41, 41 while the arms 26, 26 are positioned and supported. Meanwhile, the emptied fourth common trolley 10D is immediately returned to the second over-stretching station S6 after being transferred to the side rotating jig 40 of the underbody W.

Next, the operation of the above embodiment will be described. In the state before the operation is started, as shown in FIG. 3, the first and second dedicated carriages 3A and 3B are respectively the first carriage supply device 1
6 is stored in the trolley storage unit 17, 17. On the other hand, the third and fourth dedicated carriages 3C and 3D are stored in the carriage storage units 21 and 21 of the second carriage supply device 20, respectively. The first common carriage 10A includes the first tacking station S2 and the first overfilling station S of the assembly line 1.
Waiting between 3 and. Further, the second common carriage 10B is located between the first overfilling station S3 and the second component supplying station S4, the third common carriage 10C is located at the second overfilling station S6, and the fourth common carriage 10D is located at the third
They are waiting at each of the overprinting stations S7.

Now, it is assumed that the underbody W is assembled using the first and third special carriages 3A and 3C according to the type of automobile. First, as shown in FIG. 4, the first dedicated trolley 3A moves from the trolley storage 17 to the connecting rails 18,18.
It is called into the assembly line 1 via the
Is located at the first component supply station S1 of line 1. At this first component supply station S1, the operator supplies the components of the front body assembly W4 shown in FIG. 11 (a) onto the first dedicated carriage 3A, and the components are the jigs in the dedicated carriage 3A according to the vehicle type. It is positioned and clamped by the dedicated jigs 7, 7, ... On the base 6.

After that, as shown in FIG. 5, the dedicated carriage 3A is moved to the next first temporary attachment station S while holding the front body assembly W4 by the dedicated jigs 7, 7, ....
Transported to 2. At this station S2, the front body assembly W4 is temporarily attached by the welding robots 29, 29 while being positioned by the special jigs 7, 7, .... After this temporary attachment, the dedicated jigs 7, 7, ... Are in an unclamped state, and as shown in FIG. 6, the front body assembly W4 is lifted by the lifter 8 of the dedicated carriage 3A to move to the first side on the assembly line 1 side. It is transferred to the side rotating jig 24, and is positioned and supported on both sides of the line 1 by the support arms 26, 26 of the same type corresponding to the front body assembly W4. That is, the temporarily attached front body assembly W4 is taken out from the dedicated carriage 3A, and the support arm 26 of the first side rotating jig 24 is
The welding robots 29 and 29 are positioned and supported between the positions 26, and spot welding is additionally performed by the welding robots 29 and 29.

At that time, the front body assembly W
4 is transferred from the first dedicated trolley 3A to the side rotating jig 24, and the welding robots 29, 29 perform additional hammering while being positioned by the support arms 26, 26 of the front trolley 3A. Welding robot 2 as if hitting the body assembly W4 as it is
The welding robot 29 does not interfere with other members.
It is possible to easily perform additional hitting by.

Moreover, the empty trolley 3A is
The front body assembly W4 is taken out from the dedicated carriage 3A, and the support arm 2 of the first side rotation jig 24 is removed.
When it is positioned and supported between Nos. 6 and 26, it is immediately returned to the first component supply station S1. Therefore, the truck 3A does not interfere with the additional hitting of the front body assembly W4 at the first tacking station S2.
The additional hammering work can be performed more easily.

The trolley 3A thus emptied
Is returned to the first component supply station S1, the first common carriage 10A, which has been waiting between the first tacking station S2 and the first overfilling station S3, becomes the first
Move to temporary station S2. And this first
The front body assembly W4 is transferred from the first side rotating jig 24 while being received by the lifter 14 on the common carriage 10A, and clamped by the common jigs 13, 13 ,.

After that, the first common carriage 10A carries the front body assembly W4 and moves to the first hitting station S3. And, at this station S3, the front body assembly W4 has the first common carriage 1
It is lifted by the lifter 14 of 0A and transferred to the second side rotating jig 31, and the arms 26 on both sides of the line 1 are
Positioned and supported at 26. Then, in this position, the welding robots 32 and 32 perform additional spot welding. In the meantime, the emptied first common carriage 10A is carried out of the first overfilling station S3 and returned to the first tacking station S2 side, instead, the second common carriage 10B is replaced by the first overfilling station S3. Is brought in.

At that time, the emptied first common trolley 1
0A immediately after the transfer of the front body assembly W4 to the side rotating jig 31 is performed at the first temporary mounting station S2.
Since the welding robots 32, 32 in the first over-stretching station S3 can perform the spot-welding over-strike easily.

Thereafter, the front body assembly W4 struck by the welding robots 32, 32 is received and transferred by the lifter 14 on the second common carriage 10B, and held by the common jigs 13, 13, .... To be done.

Next, the second common carriage 10B carries the front body assembly W4 and moves to the second component supply station S4. At this station S4, the front body assembly W4 conveyed by the common carriage 10B from the first over-stretching station S3 is the carriage 1
It is lifted by the lifter 14 of 0B and transferred to the third side rotating jig 46, and the arms 26 on both sides of the line 1
Positioned and supported at 26. In the meantime, the emptied second common carriage 10B moves between the first overfilling station S3 and the second component supply station S4 and stands by, and instead, the carriage storage unit 2 in the second carriage supply device 20 described above.
The third carriage 3C stored in No. 1 is called into the assembly line 1 via the connection rails 22 and 22 and carried into the second component supply station S4.

Then, the front body assembly W4 is transferred from the third side dedicated jig 46 to the third dedicated carriage 3C while being received by the lifter 8 and held by the dedicated jigs 7, 7 ,. It

After that, by the operator, the remaining new parts of the underbody W (front and rear floor panels W5
, W6, rear end panels W7 and front and rear side sills W8, W9) are respectively supplied and assembled to the front body assembly W4 on the third dedicated carriage 3C. As a result, the entire underbody W is set, and the underbody W is a dedicated jig 7 for each vehicle type.
It is positioned and clamped by 7, ...

After the above-mentioned additional parts are assembled, the third dedicated carriage 3
C holds the underbody W and moves from the second component supply station S4 to the second tacking station S5. At the second tacking station S5, first, the underbody W on the third dedicated carriage 3C is temporarily tacked by the two welding robots 35, 35 as it is. After this temporary attachment, the underbody W is lifted by the lifter 8 of the dedicated carriage 3C, positioned and supported by the opposing support arms 26, 26 of the fourth side rotating jig 34, and in that state by the welding robots 35, 35. In addition, additional welding is performed.

Meanwhile, the emptied third dedicated trolley 3C.
Is returned to the second component supply station S4 side in the same manner as described above, the third common carriage 10C moves to the second tacking station S5, and the side rotating jig 34 moves the underbody on the third common carriage 10C. W is transferred while being received by the lifter 14, and the common jigs 13, 13, ...
Held by.

Further, the third common carriage 10C holds the underbody W and moves from the second tacking station S5 to the second over-stretching station S6. At the second over-stretching station S6, the underbody W held on the third common carriage 10C is lifted by the lifter 14 of the truck 10C and is moved to the fifth side rotary cure like the first over-strike station S3. It is transferred to the tool 37, positioned and supported by the arms 26, 26 on both sides of the line 1, and in this positioned state, the welding robots 38, 38 perform additional spot welding. In the meantime, the emptied third common carriage 10C is carried out from the second overfilling station S6 and returned to the second tacking station S5 side. Instead, the fourth common carriage 10D is carried into the second overfilling station S6. To be done. After that, the increased underbody W is lifted onto the fourth common carriage 10D by the lifter 1.
4, transferred, and held.

Thereafter, the fourth common carriage 10D holds the underbody W and moves from the second over-stretching station S6 to the third over-strike station S7. S6
Similarly, the underbody W on the fourth common carriage 10D is lifted by the lifter 14 to move the sixth side rotation jig 40.
And is positioned and supported, and in this positioned state, the welding robots 41, 41 perform the final additional welding of spot welding. With the above, the assembly of the underbody W is completed.
It is taken out from the side rotating jig 40 and carried out from the assembly line 1. Incidentally, the fourth common carriage 10D emptied at the third over-strike station S7 is carried out from the same station S7 and returned to the second over-strike station S6 side in the same manner as described above.

On the other hand, the type of the underbody W to be assembled has changed, and the second and fourth dedicated carriages 3 are changed accordingly.
When the underbody W is assembled in B and 3D, the movements of the first to fourth common carriages 10A to 10D are the same as above. On the other hand, as shown in FIG. 7, the first dedicated carriage 3A that has been used until then becomes empty at the first tacking station S2 and then the first tacking station S2.
The first trolley supply device 16 via the parts supply station S1
Returning to the empty trolley storage section 17 in, the trolley supply device 16 replaces the second dedicated trolley 3B. Similar to the above, the new second dedicated carriage 3B is conveyed to the first component supply station S1 as shown in FIG. 8, and the front body assembly W4 of the underbody W of another type is supplied there, and the dedicated jig 7 thereof is supplied. , 7, ... are positioned and held.

On the other hand, the third special carriage 3A is emptied at the second tacking station S5, and then passes through the second tacking station S5 and the second component supply station S4 to the second tacking station S5.
It returns to the empty trolley storage part 21 in the trolley supply device 20, and is exchanged with the fourth dedicated trolley 3D by the trolley supply device 20. Thereafter, the same operation as described above is performed.

Therefore, in this embodiment, when the two types of underbody W, W are assembled by welding, the dedicated carriages 3A to 3D are exchanged accordingly, and the tacking stations S2, S5 and the extra-strike stations S3, S6 are also replaced.
, S7 each side rotation jig 24, 31, 46,
It is only necessary to switch the types of the support arms 26, 26 of 34, 37, 40, and the labor for changing the types can be greatly reduced. In addition, since it is easy to replace the dedicated carriages 3A to 3D according to the type of the underbody W in this manner, lot production is not required when producing the two types of underbody W, W, and one assembly line 1 Thus, the mixed production of the underbody W can be efficiently performed.

Further, the first or second dedicated carriage 3A, 3B is provided between the first component supply station S1 and the first tacking station S2 of the assembly line 1, and the first common carriage 10A is the first tacking station S2. And the first overfill station S3, and the second common carriage 10B between the first overfill station S3 and the second component supply station S4.
The third or fourth dedicated carriage 3C, 3D is between the second component supply station S4 and the second tacking station S5, and the third common carriage 10C is the second tacking station S5 and the second tacking station S5.
Between the additional station S6 and the fourth common carriage 1
Since 0D reciprocates between the second and third overstrike stations S6 and S7, respectively, the dedicated and common carriages 3A to 3D,
No need for a circulating transfer method of 10A to 10D, it is possible to assemble and assemble two types of underbody W, W in a small installation space, and it is possible to reduce costs.

Furthermore, the front body assembly W4
And the temporary mounting process of the underbody W is carried out by each dedicated carriage 3A to 3
The jigs are positioned and held on the D by the dedicated jigs 7, 7, ... Then, the front body assembly W4 and the underbody W are additionally struck for the additional striking step, and the temporary joining stations S2, S5 are used. And the additional rotation stations S3, S6, S7 are positioned and held by the side rotating jigs 24, 34, 46, 31, 37, 40, respectively. Therefore, the temporarily attached front body assembly W4 and underbody W are used as they are for the dedicated carriage. 3A
The complicated special jigs 7, 7, ... Do not interfere with the over-strike as in the case of over-strike on 3D and main joining.
The steps of temporarily attaching and over-pressing the front body assembly W4 and the underbody W can be performed on the same assembly line 1, and all the steps of assembling the underbody W can be generalized.

Furthermore, the above-mentioned first to fourth dedicated carts 3A
.. to 3D and the first to fourth common carriages 10A to 10D are provided with lifters 8 and 14 for moving up and down the front body assembly W4 or the underbody W on the carriages 3A to 3D, 10A to 10D, respectively. 3A-3D, 1
0A to 10D and the front body assembly W4 or the underbody W between the side turning jigs 24, 34, 46, 31, 37, 40 at the tacking stations S2, S5 and the additional stations S3, S6, S7. Transfer can be easily performed.

Further, in the assembly line 1, a parts supply station S1 (or S4), a tacking station S2 (or S5), and an additional stamping station S3 (or S6, S7).
Since the two groups of stations are combined, the plurality of parts in the underbody W may be distributed and supplied to the first and second part supply stations S1 and S4. After assembling the front body assembly W4, which is a part of the parts, the remaining parts (front and rear floor panels W5, W6
, The rear end panel W7 and the front and rear side sills W8, W9) can be easily joined.

In the above embodiment, two types of underbody W, W are mixed and produced, but three or more types of underbody can be assembled. In that case, it is sufficient to dispose as many carriage storages as the number of types of the underbody W on both sides of the line 1.

In the above embodiment, the parts supply station S1 (or S4) and the temporary mounting station S2 are respectively provided.
(Or S5) and the overprinting station S3 (or S6,
Two station groups consisting of S7) are provided on the assembly line 1 so that parts are added in the middle of the assembly line 1, but even if the number of stations is increased as the number of parts increases, On the contrary, when the number of parts is small, it is possible to assemble with only one station group.

In addition, the dedicated carriages 3A to 3D are assembled on the assembly line 1
The trolley feeders 16 (or 20) for supplying the trolleys to the trolley storage units 1 on both sides of the assembly line 1 as in the above embodiment.
7 and 17 (or 21 and 21) are arranged, for example, FIG.
2 or those shown in FIGS. 13 and 14 can be adopted. That is, these drawings show a modified example of the trolley feeder (here, the first trolley feeder 16 is illustrated, and the second trolley feeder 20 can also have the same configuration), In the first trolley supply device 16 shown in FIG. 12, a turntable 43 is installed on the assembly line 1 upstream of the first component supply station S1, and on this turntable 43, different types of dedicated trolleys 3A,
, 3B, 3E, ...
, Are arranged at equal intervals in the circumferential direction, and one turntable 43 is rotated to position one carriage storage section 17 at a position on the assembly line 1. From the trolley storage unit 17, a dedicated trolley 3A (or 3B,
3E, 3F) are selectively supplied to the assembly line 1.

On the other hand, in the cart feeder 16 shown in FIGS. 13 and 14, different types of dedicated carts 3A, 3 are provided in the assembly line 1 upstream of the first component feeding station S1.
A plurality of (three in the illustrated example) carriage storages 17, 17 for storing B and 3E, respectively, are provided with a lifting mechanism 44 that is supported so as to be lifted and lowered, and the carriage storages 17, 17 by the lifting mechanism 44 are installed. , Is moved up and down to position one of the cart storage portions 17 at the height position of the assembly line 1, and the dedicated cart 3A (or 3B, 3E) is selectively supplied from the cart storage portion 17 to the assembly line 1. To do. Therefore, the same effects as those of the above-described embodiment can be obtained even with these trolley supply devices 16.

Further, although the above embodiment is for assembling the underbody W of an automobile, the present invention can of course be applied to assembling other articles in order from parts.

[0087]

As described above, according to the first and third aspects of the invention, the parts are held by the jig on the carriage and conveyed on the assembly line, and the parts are temporarily joined and permanently joined to form a plurality of types. In the case of mixing and assembling the articles described above, a plurality of types of dedicated carriages having dedicated jigs for positioning and holding parts for temporary attachment and at least one unit having a common jig common to a plurality of types of articles , And one of the exclusive carriages is supplied to the assembly line by the carriage supply means.
While moving back and forth between the parts supply station on the upstream side of the assembly line and the temporary joining station, the common carriage is set to one type regardless of the number of types of articles, and the temporary joining station and the main joining station on the downstream side thereof are used as one type. Between the parts, the parts supply station supplies the parts on a dedicated carriage and positions and holds them with a special jig, and the temporary joining station temporarily joins the parts, and the parts after the temporary joining are positioned from the special carriage by a positioning means. After a part of the parts are main-bonded to each other, the parts are transferred from the positioning means to the common carriage and held by a common jig. Furthermore, at the main bonding station, the parts are transferred from the common carriage to the positioning means. The rest of the parts were permanently joined together. Therefore, according to these inventions, it is only necessary to replace the dedicated carriage and each positioning means in accordance with a plurality of types of articles, which can significantly reduce the time and effort required when changing types, and does not require lot production. It is possible to efficiently perform mixed production of articles on one assembly line. In addition, the dedicated carriage reciprocates between the parts supply station and the temporary joining station of the assembly line, and the common carriage reciprocates between the temporary joining station and the main joining station, so there is no need for the circulation type of the dedicated and common carriages. It is possible to mix and assemble various kinds of articles in a small space, and it is possible to reduce the cost. Furthermore, the parts are temporarily joined by holding the dedicated jig on the dedicated carriage, and the subsequent main joining is performed by the positioning means at the temporary joining and the main joining stations. The complicated dedicated jig does not interfere with the main joining, and the parts assembling step can be generalized by performing the steps of temporary joining and main joining of the parts on the same assembly line.

According to the invention of claim 4, when the parts temporarily joined at the temporary joining station are transferred to the positioning means, the dedicated carriage immediately returns to the parts supply station, and the common carriage is Since the parts that were permanently joined at the main joining station were transferred to the positioning means and immediately returned to the station on the upstream side of the main joining station, the trolley interferes with the main joining of the parts at each station. Can be prevented, and the joining work can be further facilitated.

According to the fifth aspect of the present invention, the trolley supply means for supplying the dedicated trolley to the assembly line has a plurality of trolley storages arranged on the side of the assembly line. A trolley was selected and supplied to the assembly line. Further, according to the invention of claim 6, by rotating the turntable, one target trolley storage part is selected from the plurality of trolley storage parts and is positioned at a position near the assembly line. The cart was supplied to the assembly line. Further, in the invention of claim 7,
By the vertical movement of the elevating means, one of the plurality of carriage storages is positioned at the height position of the assembly line, and the dedicated carriage is supplied from the carriage storage to the assembly line. Therefore, according to these inventions, the concrete configuration of the carriage supply means can be easily obtained.

According to the eighth aspect of the present invention, each of the positioning means is rotatably supported by a support member standing on both sides of the assembly line and each support member by an axis parallel to the assembly line direction. A plurality of types of support arms provided so as to respectively correspond to different types of articles, the support arms of the same type in each support are stopped substantially horizontally toward each other on the assembly line side, By positioning and supporting the article between both support arms,
Positioning means for positioning and holding the articles in the main joining can be easily obtained.

According to the invention of claim 9, each of the dedicated carriage and the common carriage is provided with a lifter for raising a component on the carriage to a height position where it can be transferred to and from the support arm of the positioning means. The parts can be easily transferred between the positioning means and the positioning means.

According to the invention of claim 2 or 10, since the article is a car body or car body parts, mixed production of a plurality of types of car bodies or car body parts can be easily performed.

According to the twelfth aspect of the present invention, by arranging a plurality of station groups, which are a combination of the component supply station, the temporary joining station, and the main joining station, on the assembly line, a plurality of components are supplied to each station group. It can be distributed to the stations, which is advantageous when, for example, some of the parts are joined and then the remaining parts are additionally joined.

[Brief description of drawings]

FIG. 1 is a plan view schematically showing an arrangement layout of a vehicle body assembly apparatus according to an embodiment of the present invention.

FIG. 2 is a front view schematically showing an arrangement layout of a vehicle body assembly device.

FIG. 3 is a plan view schematically showing a state before starting operation at a first component supply station and a first tacking station of the vehicle body assembly apparatus.

FIG. 4 is a view corresponding to FIG. 3, showing a state in which the first dedicated carriage is transported to the first component supply station.

FIG. 5 is a view corresponding to FIG. 3 showing a state where the first dedicated carriage is transported to the first tacking station.

FIG. 6 is a side view showing a state where the first dedicated carriage is transported to the first tacking station.

FIG. 7 is a view corresponding to FIG. 3 showing a state during replacement of the first and second dedicated carriages.

FIG. 8 is a view corresponding to FIG. 3, showing a state in which the second carriage is conveyed to the first component supply station.

FIG. 9 is an enlarged perspective view of a dedicated carriage.

FIG. 10 is an enlarged perspective view of a common carriage.

FIG. 11 is a schematic perspective view of a body part to be assembled.

FIG. 12 is a schematic plan view showing a modified example of the carriage supply device.

FIG. 13 is a schematic plan view showing another modified example of the carriage supply device.

14 is a schematic sectional view taken along line XIV-XIV in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Assembly line 3A-3F Dedicated trolley 7 Dedicated jig 8 Lifters 10A-10C Common trolley 13 Common jig 14 Lifter 16,20 Car trolley supply device (trolley supply means) 17,21 Car trolley storage part 24,34 Side rotation jig ( First positioning means) 31, 37, 40 Side rotating jig (second positioning means) 29, 32, 35, 38, 41 Welding robot 43 Turntable 44 Elevating device (elevating means) 46 Side rotating jig S1, S4 Parts Supply station S2, S5 Temporary attachment station (temporary joining station) S3, S6, S7 Over-pressing station (main joining station) W Underbody (article) W4 Front body assembly (article)

Claims (12)

[Claims] 1. A method of assembling an article in which a trolley is conveyed on an assembly line to assemble a plurality of types of articles, the method comprising a dedicated jig for positioning and holding parts constituting the articles for temporary attachment of parts. A plurality of types of dedicated carriages and at least one common carriage equipped with a common jig common to a plurality of types of articles are prepared, and one of the plurality of types of dedicated carriages is supplied to the assembly line by the carriage supply means. While supplying to the station,
The parts are supplied onto the dedicated carriage and positioned and held by a dedicated jig, and then the dedicated carriage is transferred to a temporary joining station to temporarily join the parts, and the temporarily joined parts are first positioned from the dedicated carriage. After transferring and positioning and holding a part of the parts to the means, the parts of the parts are permanently joined, transferred from the first positioning means onto the common carriage and mounted and held by a common jig, and then the common carriage is at least 1 A method of assembling an article, comprising: transferring the parts to one main joining station, transferring the parts from a common carriage to a second positioning means, positioning and holding the parts, and finally joining the rest of the parts. 2. The method for assembling an article according to claim 1, wherein the article is a vehicle body or a body part of a vehicle. 3. An article assembling apparatus which conveys a trolley on an assembly line to assemble a plurality of types of articles, and is a dedicated jig for positioning and holding parts constituting the articles for temporary attachment of parts. With a plurality of types of dedicated carriages and at least one common carriage with a common jig common to a plurality of types of articles, and a truck for supplying one of the plurality of types of dedicated carriages to an assembly line A component supply station provided with a supply means and arranged on the assembly line to supply a component onto the dedicated carriage supplied by the carriage supply means, and to position and hold the component with a dedicated jig; and the downstream of the component supply station. On the dedicated carriage, which has a first positioning means arranged on the side assembly line for positioning and holding the component, and which is positioned at the component supply station. Along with joining, the temporarily joined parts are transferred from the dedicated carriage to the first positioning means to partially join the parts, and then transferred from the first positioning means onto the common carriage to be a common jig. And a second positioning means for positioning and holding the parts, which is arranged on the assembly line on the downstream side of the temporary joining station, and moves the parts on the common carriage to the second positioning means. An article assembling apparatus, comprising: at least one main joining station for placing the rest of the parts to perform main joining. 4. The article assembling apparatus according to claim 3, wherein the special carriage is returned to the parts supply station immediately after the parts temporarily joined at the temporary joining station are transferred to the first positioning means, and the common carriage is also provided. Is an apparatus for assembling articles, which is configured to immediately return to a station on the upstream side of the main joining station after the parts that have been main joined at the main joining station are transferred to the second positioning means. 5. The apparatus for assembling articles according to claim 3 or 4, wherein the trolley supply means has a plurality of trolley storages for respectively storing different types of dedicated trolleys on the side of the assembly line,
An article assembling apparatus, which is configured to selectively supply a dedicated cart from the cart storage unit to an assembly line. 6. The apparatus for assembling articles according to claim 3 or 4, wherein the trolley supply means has a turntable in which a plurality of trolley storages for respectively storing different types of dedicated trolleys are arranged in the circumferential direction. In addition, one of the cart storage units is positioned near the assembly line by rotating the turntable, and the dedicated cart is supplied from the cart storage unit to the assembly line. Assembly equipment. 7. The article assembling apparatus according to claim 3 or 4, wherein the trolley supply means has an elevating means in which a plurality of trolley storage units for respectively storing different types of dedicated trolleys are supported so as to be vertically movable. It is configured such that one trolley storage unit is positioned at the height position of the assembly line by the vertical movement of the trolley storage unit by the elevating means, and a dedicated trolley is supplied from the trolley storage unit to the assembly line. Assembling equipment for articles. 8. The apparatus for assembling an article according to claim 3, 4, 5, 6 or 7, wherein the positioning means comprises support bodies provided upright on both sides of the assembly line, and a direction of the assembly line on each support body. And a plurality of types of support arms that are rotatably supported by an axis parallel to the support arms and are provided so as to correspond to different types of articles, respectively. An apparatus for assembling an article, characterized in that the article is stopped substantially horizontally toward the side and the article is positioned and supported between the support arms. 9. The apparatus for assembling articles according to claim 8, wherein the dedicated trolley and the common trolley are each provided with a lifter for raising a component on the trolley to a height position where it can be transferred to and from the support arm of the positioning means. A device for assembling articles. 10. The article assembling apparatus according to claim 3, wherein the article is a vehicle body or a body part of a vehicle. 11. The article assembling apparatus according to claim 10, wherein the article or the vehicle body component is joined by automatic welding. 12. The article assembling apparatus according to claim 3 or 4, wherein a plurality of station groups each including a component supply station, a temporary joining station, and a main joining station are arranged in the assembly line. Article assembly equipment.