CN111620064B

CN111620064B - Manufacturing system

Info

Publication number: CN111620064B
Application number: CN201911392584.0A
Authority: CN
Inventors: 蒲池英有; 小佐佐伸大; 坂部裕树; 谷泽佑亮
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2019-02-28
Filing date: 2019-12-30
Publication date: 2021-11-16
Anticipated expiration: 2039-12-30
Also published as: JP6876080B2; CN111620064A; JP2020138280A

Abstract

The invention provides a manufacturing system capable of efficiently manufacturing a plurality of modules with different assembly man-hours by a small number of operation bodies. The manufacturing system includes: the trolley group consists of a framework part trolley and a small part trolley; and a carriage controller that moves the carriage in a predetermined order of input along a first station path including a first work station. The carriage controller moves the carriages constituting the carriage group so that the carriages are parallel to the first work station, and a necessary total work time corresponding to a number of assembling steps for the frame parts included in the carriage group is equal to or shorter than a passage time of the carriages through the first work station.

Description

Manufacturing system

Technical Field

The present invention relates to a manufacturing system. More specifically, the present invention relates to a manufacturing system that performs an assembly operation of a manufacturing module by assembling a plurality of parts to a workpiece.

Background

A production line for manufacturing automobiles is provided with: a plurality of sub-lines for manufacturing modular components such as instrument panels, bumpers, suspension assemblies (etc.); and a main line that assembles various module components manufactured on the plurality of sub lines to a vehicle body.

In addition, when cars of different models are produced in a common production line, module components of different models are produced in a mixed manner in each sub-line and supplied to a main line, and module components corresponding to the models of cars flowing through the production line are often assembled in the main line (see, for example, patent documents 1 and 2).

[ Prior art documents ]

[ patent document ]

[ patent document 1] Japanese patent laid-open No. Hei 6-35536

[ patent document 2] Japanese patent laid-open No. 2004-230485

Disclosure of Invention

[ problems to be solved by the invention ]

However, on the subline, the number of working hours required for an operator to manufacture a module part by assembling a plurality of small parts to a workpiece differs depending on the model. Therefore, when manufacturing module components of different models on one sub-line, the number of workers arranged on the sub-line needs to be matched with the model with the largest number of working hours. Therefore, when a model module component having a small number of working steps is manufactured on the sub-line, a part of the worker becomes excessive, and a loss occurs. In this case, the assembly work is performed in consideration of a situation where a part of the workers moves to another sub-line where the number of workers is insufficient. However, even in this case, the time for the operator to move between the sublines still remains as a loss.

The invention aims to provide a manufacturing system which can efficiently manufacture a plurality of modules with different assembly man-hours by a small number of operation bodies.

[ means for solving problems ]

(1) A manufacturing system (for example, a module manufacturing system S described later) of the present invention performs an assembly operation of manufacturing a module by assembling a plurality of parts (for example, a first small part P1, a second small part P2, a third small part P3, and a fourth small part P4 described later) to a workpiece (for example, a first skeleton part F1, a second skeleton part F2, a third skeleton part F3, and a fourth skeleton part F4 described later), and includes: a carriage group (for example, a carriage group G, a first carriage group SG1, and a second carriage group SG2 described later), which is composed of one or more workpiece carriages (for example, a skeleton part carriage 2, a first skeleton part carriage VF1, a second skeleton part carriage VF2, a third skeleton part carriage VF3, and a fourth skeleton part carriage VF4 described later) and one or more part carriages (for example, a part carriage 5, a first part carriage VP1, a second part carriage VP2, a third part carriage VP3, and a fourth part carriage VP4 described later); and a control device (for example, a carriage controller 7 described later) that moves the workpiece carriage and the part carriage in a predetermined input order along a predetermined path including work stations (for example, a first work station 11 and a second work station 12 described later), and that moves the workpiece carriage constituting the carriage group on which a workpiece is mounted and in accordance with a command from the control device, wherein the carriage group includes two or more types of workpieces, the part carriage constituting the carriage group on which a plurality of parts are mounted and moves in accordance with a command from the control device, the plurality of parts being assembled to the workpiece included in the carriage group by an assembly operation performed by a work main body, and the control device moves the workpiece carriage and the part carriage so that the workpiece carriage and the part carriage constituting the carriage group are parallel to each other at the work stations, the total required work time corresponding to the assembly man-hours for all the workpieces included in the carriage group is equal to or less than the passage time of the workpiece carriage or the part carriage through the work station. Here, all the workpieces included in the carriage group refer to the workpieces to be subjected to the assembly operation among all the workpieces included in the carriage group.

(2) In this case, it is preferable that the train set includes: a first sub-carriage group (for example, a first sub-carriage group SG1 described later) including one or more workpiece carriages and one or more part carriages; and a second sub-carriage group (for example, a second sub-carriage group SG2 described later) including one or more workpiece carriages and one or more part carriages and including workpieces different from the workpieces included in the first sub-carriage group, wherein the controller moves the workpiece carriages and the part carriages so that the workpiece carriages and the part carriages constituting the first sub-carriage group and the workpiece carriages and the part carriages constituting the second sub-carriage group are parallel to each other at the work station, wherein a first total required work time corresponding to assembly man-hours for all the workpieces included in the first sub-carriage group is shorter than a passage time for the workpiece carriages or the part carriages to pass through the work station, and a second total required work time corresponding to assembly man-hours for all the workpieces included in the second sub-carriage group is longer than the passage time, the remaining time obtained by subtracting the first total required work time from the passage time is equal to or more than the excess time obtained by subtracting the passage time from the second total required work time.

(3) In this case, it is preferable that the control device instructs the work body on the order of the assembly work for the workpieces included in the carriage group.

(4) Preferably, all modules manufactured through an assembling operation of the workpieces included in the trolley group are assembled to the same vehicle body.

(5) In this case, it is preferable that the carriage group includes a first workpiece carriage (for example, a first skeleton part carriage VF1) on which a first workpiece (for example, a first skeleton part F1 described later) is mounted, and a second workpiece carriage (for example, a second skeleton part carriage VF2 described later) on which a second workpiece (for example, a second skeleton part F2 described later) is mounted, and the assembly work for the first workpiece and the second workpiece includes: a first assembly operation of manufacturing a first module by assembling a plurality of parts to the first workpiece; and a second assembly operation of manufacturing a second module by assembling a plurality of parts to the second workpiece after the first assembly operation is performed, wherein a first required operation time corresponding to the first assembly operation is shorter than a second required operation time corresponding to the second assembly operation, and the control device moves the first workpiece carriage before the second workpiece carriage.

(6) In this case, the workpiece carriage includes a workpiece table (for example, a frame component table 21 described later) on which a workpiece is placed, and work tables (for example, a first work table 22 and a second work table 23 described later) on which a work body can be loaded, the carriage group includes a first workpiece carriage on which a first workpiece is loaded and a second workpiece carriage on which a second workpiece is loaded, and the first workpiece carriage and the second workpiece carriage are coupled to each other while moving along the work station.

[ Effect of the invention ]

(1) The manufacturing system of the present invention includes: a trolley group which is composed of more than one workpiece trolley and more than one part trolley; and a control device for moving the workpiece carriage and the part carriage in a predetermined input order along a predetermined path including the work station. The workpiece carrier constituting the carrier group carries the workpiece, the carrier group includes two or more kinds of workpieces, and the component carrier constituting the carrier group carries a plurality of components which are assembled with respect to all the workpieces included in the same carrier group by an assembling operation performed by the operation main body. The control device moves the workpiece carriage and the part carriage in parallel at the work station. Therefore, according to the manufacturing system, the work main body responsible for the assembly work of the workpieces included in the carriage group can quickly shift to the assembly work of the workpieces mounted on the other workpiece carriages in parallel with the workpiece carriage after the assembly work of the workpieces mounted on the predetermined workpiece carriages in the carriage group is completed. In the manufacturing system, the work carriages are arranged in parallel, so that the moving time of the work body between the work carriages can be shortened, and thus, a plurality of types of modules can be efficiently manufactured with a small number of work bodies. In the manufacturing system, the work body can complete the assembly work of all the workpieces until the carriage passes through the work station by setting the total required work time corresponding to the assembly man-hours for all the workpieces included in the carriage group to be equal to or less than the passage time of the carriage passing through the work station.

(2) In the manufacturing system of the present invention, the carriage group is divided into a first sub-carriage group and a second sub-carriage group including a workpiece different from the workpiece included in the first sub-carriage group, and the control device moves the plurality of carriages constituting the first sub-carriage group and the plurality of carriages constituting the second sub-carriage group so that the plurality of carriages are parallel to each other at the work station. In the manufacturing system, a first total required work time corresponding to the assembly man-hours for all the workpieces included in the first sub-carriage group is made shorter than a passage time for the carriage to pass through the work station, and a second total required work time corresponding to the assembly man-hours for all the workpieces included in the second sub-carriage group is made longer than the passage time. Thus, for example, after the assembly work is completed until the first sub-carriage group passes through the work station, the work body responsible for the assembly work of the workpieces included in the first sub-carriage group can be quickly transferred to the second sub-carriage group in parallel with the first sub-carriage group, and the assembly work of the workpieces included in the second sub-carriage group can be assisted, so that a plurality of types of modules can be efficiently manufactured with a small number of work bodies. In the manufacturing system, the remaining time obtained by subtracting the first total required work time from the passage time is equal to or longer than the excess time obtained by subtracting the passage time from the second total required work time, and the work body responsible for the assembly work of the first sub-carriage group and the work body responsible for the assembly work of the second sub-carriage group cooperate with each other, whereby the assembly work of all the workpieces can be completed until the first sub-carriage group and the second sub-carriage group pass through the work station.

(3) In the manufacturing system of the present invention, the workpiece carriage and the part carriage constituting the carriage group are made parallel to each other at the work station, and the work main body performs the assembling work on the workpiece carriage and the part carriage parallel to each other at the work station. For example, when a plurality of workpiece carriages are included in the carriage group, the timing at which the workpiece carriage passes through the work station and leaves the work station is different for each workpiece carriage. Therefore, in order to complete the assembly work of all the workpieces included in the carriage group by the work main body until the workpiece carriages included in the carriage group pass through the work station, the work main body needs to perform the assembly work in an order corresponding to the order in which the workpiece carriages are thrown into the work station. Therefore, in the manufacturing system of the present invention, the control device instructs the work body to perform the assembly work on all the workpieces included in the carriage group. In this way, the work body can complete the assembly work for all the workpieces included in the carriage group until the plurality of workpiece carriages constituting the carriage group pass through the work station.

(4) In the manufacturing system of the present invention, all modules manufactured through the assembly work of all the workpieces included in the carriage group are assembled on the same vehicle body. This makes it possible to manufacture modules assembled on the same vehicle body at the same work station, and therefore, parts and workpieces can be put into the work station as needed, and a plurality of modules can be efficiently manufactured while synchronizing with a main line for assembling the plurality of modules on the vehicle body.

(5) In the manufacturing system of the present invention, the carriage assembly includes: a first workpiece carriage for carrying a first workpiece for a first assembly operation; and a second workpiece carriage on which a second workpiece for performing a second assembly operation is mounted. Here, the first required work time corresponding to the first assembly work is shorter than the second required work time corresponding to the second assembly work. The control device moves a first workpiece carriage carrying a first workpiece requiring a shorter work time to the carriage group before a second workpiece carriage carrying a second workpiece requiring a longer work time. Thus, the work main body responsible for the assembly work of the first workpiece and the second workpiece included in the carriage group can perform the second assembly work before the second workpiece carriage carrying the second workpiece passes through the work station after the first assembly work is finished. Therefore, the work main body can perform the first assembly work and the second assembly work until the first workpiece carriage and the second workpiece carriage pass through the work station, thereby manufacturing the first module and the second module.

(6) In the manufacturing system of the present invention, the workpiece carriage includes a workpiece table on which the workpiece is placed and a work table on which the work body can be carried. Thus, the work body can ride on the work table of the workpiece carriage moving along the work station, and the work for assembling the workpiece can be performed on the moving workpiece carriage. In addition, in the manufacturing system, the first workpiece carriage carrying the first workpiece and the second workpiece carriage carrying the second workpiece are coupled to each other while moving along the work station. This facilitates movement of the working body between the first workpiece carriage and the second workpiece carriage.

Drawings

Fig. 1 is a view showing the configuration of an automobile production line including a module manufacturing system according to an embodiment of the present invention.

Fig. 2 is a diagram showing a configuration of an assembly work area.

Fig. 3 is a view schematically showing a charging procedure of a cart in the module manufacturing system of example 1.

Fig. 4 is a view schematically showing a charging procedure of a cart in the module manufacturing system of example 2.

Fig. 5 is a view schematically showing a loading sequence of a cart in the module manufacturing system of example 3.

[ description of reference numerals ]

S: module manufacturing system (manufacturing system)

F1: first skeleton part (workpiece)

F2: second frame part (workpiece)

F3: third frame part (workpiece)

F4: fourth frame part (workpiece)

P1: first small parts (details)

P2: second small parts (details)

P3: third minor details (details)

P4: fourth minor details (details)

2: framework parts trolley (workpiece trolley)

VF 1: first skeleton part trolley (workpiece trolley)

VF 2: second skeleton part trolley (workpiece trolley)

VF 3: third frame parts trolley (workpiece trolley)

VF 4: fourth frame parts trolley (workpiece trolley)

5: small parts trolley (parts trolley)

VP 1: first small parts trolley (parts trolley)

VP 2: second small parts trolley (parts trolley)

VP 3: third small parts trolley (parts trolley)

VP 4: fourth small parts trolley (parts trolley)

G: trolley set

SG 1: first sub-trolley group

SG 2: second subsidiary trolley group

11: first work station

12: second work station

7: trolley controller (control device)

21: framework part bench (workpiece bench)

22: first work bench (work bench)

23: second working platform (working platform)

Detailed Description

Hereinafter, a configuration of a module manufacturing system S according to an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a diagram showing a configuration of an automobile production line L including a module manufacturing system S according to the present embodiment. The automobile production line L is a production line for manufacturing an automobile of 2 or more models, and includes a main line Lm through which bodies of various models flow, and a module manufacturing system S for manufacturing a plurality of kinds of module components assembled to the bodies flowing through the main line Lm.

On the main line Lm, the vehicle bodies of 2 or more types of vehicles flow in the order determined according to a predetermined production plan. The main line Lm includes a plurality of vehicle body assembling processes for assembling various module components corresponding to the model of the vehicle body to be assembled to the vehicle body flowing down from the upstream. Fig. 1 shows only three steps of assembling an instrument panel module, a front end module, and a bumper module, which are module components manufactured in the module manufacturing system S, to a vehicle body among a plurality of vehicle body assembling steps included in the main line Lm.

In the instrument panel assembling step L1, the following assembling operations are performed: an instrument panel module corresponding to the model of the vehicle body to be processed is assembled to the vehicle body flowing through the main line Lm from among the instrument panel modules of the various models supplied from the module manufacturing system S. In the front end module assembling step L2, the following assembling operations are performed: the front end module corresponding to the model of the vehicle body to be subjected is assembled to the vehicle body flowing through the main line Lm from among the front end modules of the various models supplied from the module manufacturing system S. In the bumper assembling step L3, the following assembling operations are performed: the bumper modules corresponding to the model of the vehicle body to be processed are assembled to the vehicle body flowing through the main line Lm from among the bumper modules of the various models supplied from the module manufacturing system S.

The module manufacturing system S includes: an assembly work area 1 in which a plurality of small parts are assembled to a skeleton part by a plurality of workers to perform an assembly work for manufacturing a module part; a plurality of framework part trolleys 2 for carrying framework parts and moving according to instructions; a framework component assembly and packaging area 3 for carrying out framework component carrying operation for carrying framework components on the plurality of framework component trolleys 2 by a plurality of operators; a plurality of small parts carriages 5 which carry a plurality of small parts and move according to the instruction; a small component collection and packaging area 6 for carrying out a small component mounting operation for mounting a plurality of small components on the plurality of small component carriages 5 by a plurality of operators; and a carriage controller 7 that moves the plurality of framework component carriages 2 and the small component carriage 5 in a predetermined input order along a predetermined path including at least the assembly work area 1.

Each framework part trolley 2 includes: a communicator that receives an instruction from the vehicle controller 7; a table carrying at least one skeletal component; a driving source for generating power for moving the stage; and a control device for controlling the driving source and moving the table at a predetermined speed along a path determined according to a command transmitted from the table controller 7.

Each small parts cart 5 includes: a communicator that receives an instruction from the vehicle controller 7; a table on which a plurality of small parts assembled to the frame part are mounted; a driving source for generating power for moving the stage; and a control device for controlling the driving source and moving the table at a predetermined speed along a path determined according to a command transmitted from the table controller 7.

The carriage controller 7 can communicate with the communicators mounted on the respective framework component carriages 2 and the respective small component carriages 5 by, for example, wireless communication. The carriage controller 7 wirelessly transmits a command to each of the framework component carriages 2 and the small component carriages 5, thereby moving each of the framework component carriages 2 and the small component carriages 5 along a framework component carriage path and a small component carriage path, which will be described below, in a predetermined order of input.

The skeleton part trolley path through which the skeleton part trolley 2 passes includes: a path C21 from the skeleton part collection and packing area 3 to the assembly work area 1, a path C22 from the assembly work area 1 to the main line Lm, and a path C23 from the main line Lm to the skeleton part collection and packing area 3.

The small part carriage path through which the small part carriage 5 passes includes: a path C51 from the small parts collection and packing area 6 to the assembly work area 1, and a path C52 from the assembly work area 1 to the small parts collection and packing area 6.

The frame component carriage 2 on which a new frame component is mounted through the frame component mounting operation in the frame component collection and packaging area 3 reaches the assembly operation area 1 from the frame component collection and packaging area 3 along the path C21. The minor component cart 5 on which a plurality of new minor components are mounted through the minor component mounting work in the minor component collection and packaging area 6 reaches the assembly work area 1 along the path C51 from the minor component collection and packaging area 6.

The framework component carriage 2 on which the module components manufactured through the assembly work in the assembly work area 1 are mounted reaches the main line Lm from the assembly work area 1 along the path C22. Here, when the module component mounted on the framework component carriage 2 is an instrument panel module, the framework component carriage 2 moves to the instrument panel assembling step L1 of the main line Lm, and supplies the instrument panel module to the instrument panel assembling step L1. When the module component mounted on the framework component carriage 2 is the front end module, the framework component carriage 2 moves to the front end module assembling step L2 of the main line Lm, and supplies the front end module to the front end module assembling step L2. When the module component mounted on the frame component carriage 2 is a bumper module, the frame component carriage 2 moves to the bumper assembly step L3 of the main line Lm, and the bumper module is supplied to the bumper assembly step L3.

The framework component carriage 2 emptied by the assembly work on the main line Lm reaches the framework component collection/packing area 3 from the main line Lm along the path C23. In this way, on the framework component carriage 2 returned to the framework component collection and packaging area 3, a new framework component is mounted through the framework component mounting work in the framework component collection and packaging area 3, and the framework component carriage is sent out to the assembly work area 1 along the path C21 again.

The small parts cart 5 emptied by the assembly work in the assembly work area 1 reaches the small parts collection and packaging area 6 from the assembly work area 1 along the path C52. In this way, a plurality of new small parts are mounted on the small part cart 5 returned to the small part collection and packing area 6 through the small part mounting work in the small part collection and packing area 6, and are delivered to the assembly work area 1 along the route C51 again.

Fig. 2 is a diagram showing a configuration of the assembly work area 1. Hereinafter, a case will be described in which an instrument panel module, a front end module, and a bumper module, which are divided into two models (model a and model B), are manufactured in the assembly work area 1, but the present invention is not limited thereto. The types of the module parts manufactured in the assembly work area are not limited to the three types of the instrument panel module, the front end module, and the bumper module, and the number of the types of the module parts manufactured in the assembly work area is not limited to two types of the type a and the type B.

The assembly work area 1 includes: a fixed platform 10 on which an operator in charge of an assembly operation can move freely, a plurality of (12 in the example of fig. 2) carriages parked at a first work station 11 formed on the fixed platform 10, and a plurality of (12 in the example of fig. 2) carriages parked at a second work station 12 formed on the fixed platform 10.

The fixed platform 10 is, for example, a rectangular island shape extending to the left and right in fig. 2. A first work station 11 extending in the longitudinal direction is formed on the upper side in fig. 2 of the fixed platform 10, and a second work station 12 extending in the longitudinal direction is formed on the lower side in fig. 2.

The left end of the first work station 11 in fig. 2 is a first landing point 11a where the framework part carriage thrown into the assembly work area 1 along the route C21 and the small part carriage thrown into the assembly work area 1 along the route C51 land on the first landing point 11 a. The end of the first work station 11 on the right side in fig. 2 is a first offshore point 11b, and the first offshore point 11b is provided on the offshore side of the frame component carriage and the small component carriage parked in the first work station 11. A first rail (not shown) extending in the left-right direction in fig. 2 is formed between the first land point 11a and the first land point 11b in the first work station 11.

The end portion on the right side in fig. 2 of the second work station 12 is a second land point 12a where the framework component carriage thrown into the assembly work area 1 along the path C21 and the small component carriage thrown into the assembly work area 1 along the path C51 land on the second land point 12 a. The end of the second work station 12 on the left side in fig. 2 is a second offshore point 12b, and the second offshore point 12b is located offshore to the framework component carriage and the small component carriage parked in the second work station 12. A second track (not shown) is formed between the second land point 12a and the second land point 12b in the second work station 12, and extends in the left-right direction in fig. 2.

As shown in fig. 2, the first land point 11a and the second land point 12b face each other in the short side direction of the fixed platform 10, and the first land point 11b and the second land point 12a face each other in the short side direction of the fixed platform 10.

The frame component carriage 2 has a rectangular shape in plan view, and moves with the short side direction as the traveling direction. A frame component table 21 on which frame components are provided is provided at the center of the frame component carriage 2 in the longitudinal direction. Further, a first work table 22 and a second work table 23 on which a worker can ride are formed on both sides of the frame component table 21 of the frame component carriage 2. Therefore, the operator can ride on the first work table 22 and the second work table 23 and perform the assembling work of the skeleton component mounted on the skeleton component table 21 while the skeleton component carriage 2 is moving.

A forward traveling vehicle connection portion 24 is formed at an end portion on the forward side in the traveling direction of the framework component carriage 2, and the forward traveling vehicle connection portion 24 is connected to an end portion on the rearward side in the traveling direction of the small component carriage 5 or the framework component carriage 2 that moves forward. Further, a station connecting portion 25 is formed at the right end portion of the frame component carriage 2 as viewed in the traveling direction, and the station connecting portion 25 is engaged with and slidable along a first rail formed in the first work station 11 or a second rail formed in the second work station 12.

When the framework component carriage 2 reaches the first land point 11a (or the second land point 12a) along the path C21 under the control of the carriage controller 7, the station connecting portion 25 engages with the first rail (or the second rail), and the framework component carriage 2 comes into land at the first work station 11 (or the second work station 12). The framework component carriage 2 that is in abutment with the first landing point 11a (or the second landing point 12a) moves along the first station path CS1 (or the second station path CS2) extending along the first track (or the second track) while being kept in abutment with the first work station 11 (or the second work station 12) under the control of the carriage controller 7, and reaches the first landing point 11b (or the second landing point 12 b). When the frame component carriage 2 reaches the first offshore point 11b (or the second offshore point 12b), the station coupling portion 25 is separated from the first rail (or the second rail) and is located offshore from the first work station 11 (or the second work station 12). The framework-part trolley 2 offshore at the first offshore point 11b (or the second offshore point 12b) moves along the path C22 toward the main line Lm under the control of the trolley controller 7.

Further, as described above, while moving along the first station route CS1 (or the second station route CS2), the preceding vehicle coupling portion 24 of the framework component carriage 2 is maintained in a state of being coupled to the end portion on the rear side in the traveling direction of the carriage that moves in advance on the first station route CS1 (or the second station route CS 2).

The small part cart 5 has a rectangular shape having substantially the same shape as the framework part cart 2 in a plan view, and moves with the short side direction being substantially the traveling direction. The small component cart 5 is provided with a first front container 51, a second front container 52, a first rear container 53, and a second rear container 54 on which a plurality of small components are mounted.

A preceding vehicle coupling portion 55 is formed at an end portion on the forward side in the traveling direction of the small component carriage 5, and the preceding vehicle coupling portion 55 is coupled to an end portion on the backward side in the traveling direction of the framework component carriage 2 or the small component carriage 5 that moves in advance. Further, a station coupling portion 56 is formed at an end portion on the right side in the traveling direction of the small part cart 5, and the station coupling portion 56 is engaged with and slidable along a first rail formed in the first work station 11 or a second rail formed in the second work station 12.

The first front container 51 and the second front container 52 are provided on the forward side in the traveling direction of the small parts cart 5, and the first rear container 53 and the second rear container 54 are provided on the rearward side in the traveling direction of the small parts cart 5. The first front container 51 is disposed on the right side as viewed in the traveling direction, and the second front container 52 is disposed on the left side as viewed in the traveling direction. The first rear tank 53 is disposed on the right side as viewed in the traveling direction, and the second rear tank 54 is disposed on the left side as viewed in the traveling direction.

Therefore, for example, when the skeleton component carriage 2 is connected to the preceding vehicle connecting portion 55 of the small component carriage 5, the operator who gets on the first work bed 22 of the skeleton component carriage 2 as the preceding vehicle can perform the following assembly work: the small parts provided in the first front container 51 are taken out and assembled to the frame parts mounted on the frame part table 21. Further, the operator riding on the second work platform 23 of the framework component carriage 2 as a preceding vehicle can perform the following assembly work: the small parts provided in the second front case 52 are taken out and assembled to the frame parts mounted on the frame part table 21.

In addition, when the small component carriage 5 is connected to the preceding-vehicle connecting portion 24 of the framework component carriage 2, the worker riding on the first work table 22 of the framework component carriage 2 as the subsequent vehicle can perform the following assembly work: the small parts provided in the first rear case 53 are taken out and assembled to the frame parts mounted on the frame part table 21. Further, the operator riding on the second work platform 23 of the framework component carriage 2 as the following carriage can perform the following assembly work: the small parts provided in the second rear case 54 are taken out and assembled to the frame parts mounted on the frame part table 21.

When the small part cart 5 reaches the first land point 11a (or the second land point 12a) along the path C51 under the control of the cart controller 7, the station connecting portion 56 thereof engages with the first rail (or the second rail), whereby the small part cart 5 comes into land at the first work station 11 (or the second work station 12). The cart for small parts 5 that is in the first landing point 11a (or the second landing point 12a) moves along the first station path CS1 (or the second station path CS2) while being kept in the first work station 11 (or the second work station 12) under the control of the cart controller 7, and reaches the first landing point 11b (or the second landing point 12 b). When the small part cart 5 reaches the first offshore point 11b (or the second offshore point 12b), the station coupling portion 56 is separated from the first rail (or the second rail) and is located offshore from the first work station 11 (or the second work station 12). The small part trolley 5 offshore at the first offshore point 11b (or the second offshore point 12b) moves along the path C52 toward the small part collection packing area 6 under the control of the trolley controller 7.

As described above, while moving along the first station route CS1 (or the second station route CS2), the preceding vehicle coupling portion 55 of the small-parts cart 5 is maintained in a state of being coupled to the end portion on the rear side in the traveling direction of the cart that moves in advance on the first station route CS1 (or the second station route CS 2). As shown in fig. 2, a predetermined plurality of (12 in the example of fig. 2) dollies can be simultaneously parked at the first work station 11 (or the second work station 12). Therefore, as shown in fig. 2, a plurality of carriages which are parked at the first work station 11 (or the second work station 12) and move along the first station route CS1 (or the second station route CS2) are connected in a row. Thus, the first work station 11 (or the second work station 12) forms a work area in which the plurality of framework component carriages 2 and the small component carriages 5 are connected in a row.

Therefore, the operator can perform the assembling work of the frame components mounted on a certain frame component carriage 2 during the period from when the frame component carriage 2 comes into abutment at the first land point 11a (or the second land point 12a) to when the frame component carriage 2 comes off the first land point 11b (or the second land point 12 b). As described above, a plurality of carriages parked at the first work station 11 (or the second work station 12) are connected. Therefore, the operator can move back and forth between the connected carriages and perform the assembly operation of the frame components mounted on the frame component carriage 2 different from the frame component carriage 2 on which the operator first rides.

The passage time taken until the framework component carriage 2 and the small component carriage 5 pass through the first work station 11 (or the second work station 12) as described above (more specifically, the passage time taken from the time when the framework component carriage 2 and the small component carriage 5 land at the first land point 11a (or the second land point 12a) to the time when the framework component carriage 5 comes off the land at the first land point 11b (or the second land point 12 b)) is adjusted by controlling the speed of the framework component carriage 2 and the small component carriage 5 along the first station route CS1 (or the second station route CS2) by the carriage controller 7.

Therefore, for example, the worker can carry the framework component carriage 2 from the fixed platform 10 at the first landing point 11a (or the second landing point 12a) and then get off the framework component carriage 2 at the first landing point 11b (or the second landing point 12b), thereby basically performing the assembly work within the transit time. As described above, the first land point 11b faces the second land point 12a along the short side direction of the fixed platform 10, and the second land point 12b faces the first land point 11a along the short side direction of the fixed platform 10. Therefore, as described above, the worker who performs the assembling work on the first work station 11 side (or the second work station 12 side) can get off the vehicle at the first offshore point 11b (or the second offshore point 12b), then get on the framework component carriage 2 from the fixed platform 10 at the second offshore point 12a (or the first offshore point 11a), and then get off the vehicle from the framework component carriage 2 at the second offshore point 12b (or the first offshore point 11b), thereby performing the assembling work substantially within the passage time. Therefore, the operator can alternately repeat the assembly work of the first work station 11 and the assembly work of the second work station 12 with a small movement distance.

In the assembly work area 1 described above, the assembly work is performed on the frame components mounted on the frame component carriage 2 by the operator while the frame component carriage 2 passes through the first station path CS1 (or the second station path CS2), thereby completing the module components. After the frame component carriage 2 on which the completed module component is mounted is offshore at the first offshore point 11b (or the second offshore point 12b), it moves toward the main line Lm along the path C22 under the control of the carriage controller 7.

In the assembly work area 1 described above, the operator performs the assembly work while the small parts cart 5 passes through the first station route CS1 (or the second station route CS 2). The small parts trolley 5 after the required plurality of small parts are taken out as described above moves toward the small parts collection packing area 6 along the path C52 under the control of the trolley controller 7 after being offshore at the first offshore point 11b (or the second offshore point 12 b).

In addition, as described above, when the small component carriages 5 are connected to each other in the front and rear directions in the traveling direction of a certain framework component carriage 2, the worker who gets on the framework component carriage 2 can take out the small components from the two small component carriages 5 connected in the front and rear directions and perform the assembling operation. Therefore, it is preferable that the truck controller 7 alternately puts the frame component truck 2 and the small component truck 5 into the first work station 11 (or the second work station 12) so that the frame component truck 2 and the small component truck 5 on which the plurality of small components assembled to the frame components mounted on the frame component truck 2 are mounted are connected to each other and parallel to each other along the first station route CS1 (or the second station route CS 2).

Fig. 2 shows the following case: the following skeleton part truck 2 and the following small part truck 5 are put into the first working station 11 in this order, the skeleton part truck 2 for carrying an instrument panel skeleton A as ｃA skeleton part of an instrument panel module of the model A, the small part truck 5 for carrying ｃA small part IP-A assembled to the instrument panel skeleton A and ｃA small part Bpr-A as ｃA bumper skeleton part assembled to ｃA bumper module of the model A, the skeleton part truck 2 for carrying the bumper skeleton A, the small part truck 5 for carrying the small part Bpr-A and the small part FEM-A as ｃA front skeleton A assembled to ｃA skeleton part of ｃA front end module of the model A, the skeleton part truck 2 for carrying the front skeleton A, the small part truck 5 for carrying the small part FEM-A and the small part IP-A, the skeleton part truck 2 for carrying the instrument panel skeleton A, the small part truck 5, ｃA small part trolley 5 for carrying small parts IP-A and Bpr-A, ｃA framework part trolley 2 for carrying ｃA bumper framework A, ｃA small part trolley 5 for carrying small parts Bpr-A and FEM-A, ｃA framework part trolley 2 for carrying ｃA front framework A, and ｃA small part trolley 5 for carrying small parts FEM-A and IP-A. Thus, the worker riding on each of the framework component carriages 2 parked at the first work station 11 can perform the assembly work of taking out the necessary small components from the respective left and right sides and assembling the same to the framework component on the same ride, with a small moving distance. As described above, in the example of fig. 2, since a plurality of modules assembled to the same vehicle body on the main line Lm can be manufactured at the same first work station 11 by throwing the carriage on which the skeleton parts and the small parts of the same model a are mounted into the first work station 11, the skeleton parts and the small parts can be thrown into the first work station 11 as needed, and a plurality of modules can be efficiently manufactured in synchronization with the main line Lm.

In addition, fig. 2 shows the following case: the following skeleton part truck 2 and the following small part truck 5 are thrown into the second working station 12 in this order, the skeleton part truck 2 for carrying the instrument panel skeleton B as the skeleton part of the instrument panel module of the model B, the small part truck 5 for carrying the small part IP-B assembled to the instrument panel skeleton B and the small part Bpr-B of the bumper skeleton B as the skeleton part of the bumper module assembled to the model B, the skeleton part truck 2 for carrying the bumper skeleton B, the small part truck 5 for carrying the small part Bpr-B and the small part FEM-B as the front skeleton B assembled to the skeleton part of the front end module of the model B, the skeleton part truck 2 for carrying the front skeleton B, the small part truck 5 for carrying the small part FEM-B and the small part IP-B, the skeleton part truck 2 for carrying the instrument panel skeleton B, the small part truck 5, the small part truck, A small part cart 5 for carrying small parts IP-B and Bpr-B, a skeleton part cart 2 for carrying a bumper skeleton B, a small part cart 5 for carrying small parts Bpr-B and FEM-B, a skeleton part cart 2 for carrying a front skeleton B, and a small part cart 5 for carrying small parts FEM-B and IP-B. Thus, the worker riding on each of the framework component carriages 2 parked at the second work station 12 can perform the assembly work of taking out the necessary small components from the respective left and right sides and assembling the same to the framework component on the same ride, with a small moving distance. As described above, in the example of fig. 2, since a plurality of modules assembled to the same vehicle body on the main line Lm can be manufactured at the same second work station 12 by putting a carriage on which the skeleton parts and the small parts of the same model B are mounted into the second work station 12, the skeleton parts and the small parts can be put into the second work station 12 as needed, and a plurality of modules can be efficiently manufactured while synchronizing with the main line Lm.

The order of putting the framework component carriage 2 and the small component carriage 5 into the first work station 11 and the second work station 12 by the carriage controller 7 is not limited to the order shown in fig. 2. The order of the input of the framework component carriage 2 and the small component carriage 5 is determined by the assembly time of the assembly operation for the framework components mounted on the framework component carriage 2 so that the loss of the assembly operation by the operator is reduced.

Fig. 2 shows the following cases: the truck controller 7 puts the framework part truck 2 carrying the framework parts of the model a and the small part truck 5 carrying the small parts assembled to the framework parts of the model a into the first work station 11, and manufactures the module parts for the model a at the first work station 11, and puts the framework part truck 2 carrying the framework parts of the model B and the small part truck 5 carrying the small parts assembled to the framework parts of the model B into the second work station 12, and manufactures the module parts for the model B at the second work station 12. The module parts of the model a and the model B can be manufactured in the first work station 11 and the second work station 12 so that the skeleton parts and the small parts of the model a and the model B are mixedly charged into the first work station 11 and the second work station 12.

While one embodiment of the present invention has been described above, the present invention is not limited to this. The configuration of the details may be appropriately modified within the scope of the present invention. For example, in the above-described embodiment, a case has been described in which the work subject performing the assembly work in the assembly work area 1 is the operator, but the present invention is not limited to this. The working body may be a robot other than the operator, or may be a combination of the operator and the robot.

[ example 1]

Fig. 3 is a view schematically showing a charging procedure of a cart in the module manufacturing system of example 1. In embodiment 1, a case will be described where a plurality of workers perform the following operations in the first work station 11: a first assembling work of manufacturing a first module part by assembling a plurality of first small parts P1 to the first skeleton part F1, and a second assembling work of manufacturing a second module part by assembling a plurality of second small parts P2 to the second skeleton part F2.

In example 1, the passage time taken for the carriage to pass through the first work station 11, that is, the predetermined time for each operator when the assembly work is performed at the first work station 11 is set to 200 seconds. The first required working time corresponding to the man-hour for assembling the first small part P1 with respect to the first skeleton part F1 is 90 seconds, and the second required working time corresponding to the man-hour for assembling the second small part P2 with respect to the second skeleton part F2 is 110 seconds. Here, the required operation time is a time required for completing the module component when an assembly operation of the subject skeleton component is performed by a predetermined number of operators (hereinafter, 1 operator, but may be 2 or more).

As described above, in embodiment 1, the total required working time, which is the sum of the first required working time and the second required working time, is below the passing time. That is, in example 1, the number of workers in the work unit can manufacture the first module component and the second module component until the passage time elapses by continuously performing the first assembly work and the second assembly work.

Therefore, in example 1, one carriage group G is configured by four carriages in total of a first frame component carriage VF1 on which the first frame component F1 is mounted, a second frame component carriage VF2 on which the second frame component F2 is mounted, a first small component carriage VP1 in which the first small component P1 is mounted on the front container and the second small component P2 is mounted on the rear container, and a second small component carriage VP2 in which the second small component P2 is mounted on the front container and the first small component P1 is mounted on the rear container. Since the truck group G according to embodiment 1 includes the first frame part truck VF1 and the second frame part truck VF2 in total, and the first frame part truck VF1 and the second frame part truck VF2 each have one first frame part F1 and one second frame part F2, the truck group G includes two frame parts in total. Further, a display D that displays an instruction to the operator is provided at a position that can be visually recognized by the operator in the first framework component carriage VF1 and the second framework component carriage VF2 where the assembly operation is performed by the operator. Further, the first module component and the second module component manufactured through the assembly work of the first skeleton component F1 and the second skeleton component F2 included in one trolley group G are preferably assembled to the same vehicle body on the main line Lm, but the present invention is not limited thereto. For example, when there are a plurality of main lines, the first module part and the second module part may be assembled to the vehicle body flowing through the respective main lines at substantially the same timing.

The carriage controller 7 moves the first frame component carriage VF1, the second frame component carriage VF2, the first small component carriage VP1, and the second small component carriage VP2 in parallel in a state where the first frame component carriage VF1, the second frame component carriage VF2, the first small component carriage VP1, and the second small component carriage VP2, which constitute the total four carriages of the carriage group G, are connected in a row at the first work station 11. The carriage controller 7 repeatedly feeds the carriage group G including the total of 4 carriages to the first work station 11. As a result, as shown in fig. 3, the plurality of carriages constituting the plurality of carriage groups G move along the first station route CS1 while being connected in a row.

Here, as shown in fig. 3, the order of putting the four carriages constituting each carriage group G is preferably the order of the first skeleton part carriage VF1, the first widget carriage VP1, the second skeleton part carriage VF2, and the second widget carriage VP 2. By alternately putting in the framework component carriage and the small component carriage in this way, the worker riding the framework component carriage can take out the small components mounted on the small component carriages connected in the front-rear direction in the traveling direction and assemble the small components to the framework component on the same ride. In addition, by thus putting the first frame component carriage VF1 on which the first frame component F1 requiring a short operation time is mounted before the second frame component carriage VF2 on which the second frame component F2 requiring a long operation time is mounted, the operator can more reliably end the first assembly operation and the second assembly operation until the carriage passes through the first operation station 11. That is, when the operator performs the second assembly work after performing the first assembly work, it is possible to ensure that the time required for performing the second assembly work for the second skeleton part F2 which is input to the first work station 11 with a delay after performing the first assembly work for the first skeleton part F1 which is input to the first work station 11 in advance is long.

The truck controller 7 also instructs the operator to perform the assembly work by displaying the order of performing the assembly work on the display D mounted on the first framework component truck VF1 and the second framework component truck VF 2. In the present embodiment, the vehicle controller 7 displays the contents of the second assembly operation after the first assembly operation is performed on the display D.

In the present embodiment, the following is explained: the first and second module parts are different types of module parts and the first and second required working times are different, but the present invention is not limited thereto. The first and second modular parts may be the same type of modular part and the first and second desired operating times may be the same.

[ example 2]

Fig. 4 is a view schematically showing a charging procedure of a cart in the module manufacturing system of example 2. In embodiment 2, a case will be described where a plurality of workers perform the following operations at the first work station 11: a first assembling work of assembling a plurality of first small parts P1 to a first skeleton part F1 to manufacture a first module part, a second assembling work of assembling a plurality of second small parts P2 to a second skeleton part F2 to manufacture a second module part, a third assembling work of assembling a plurality of third small parts P3 to a third skeleton part F3 to manufacture a third module part, and a fourth assembling work of assembling a plurality of fourth small parts P4 to a fourth skeleton part F4 to manufacture a fourth module part.

In example 2, the passage time taken for the carriage to pass through the first work station 11 was set to 200 seconds. Further, the first required operation time corresponding to the number of assembly man-hours of the first small part P1 with respect to the first skeleton part F1 is set to 20 seconds, the second required operation time corresponding to the number of assembly man-hours of the second small part P2 with respect to the second skeleton part F2 is set to 40 seconds, the third required operation time corresponding to the number of assembly man-hours of the third small part P3 with respect to the third skeleton part F3 is set to 50 seconds, and the fourth required operation time corresponding to the number of assembly man-hours of the fourth small part P4 with respect to the fourth skeleton part F4 is set to 90 seconds.

As described above, in example 2, the total required working time, which is the sum of the first to fourth required working times, is equal to or less than the passage time. That is, in example 2, the first to fourth module parts can be manufactured until the passage time elapses by the first assembly work, the second assembly work, the third assembly work, and the fourth assembly work being continuously performed by the number of workers in the work unit.

Therefore, in example 2, one carriage group G is constituted by eight carriages in total as follows: a first skeleton part carriage VF1 for mounting a first skeleton part F1, a second skeleton part carriage VF2 for mounting a second skeleton part F2, a third skeleton part carriage VF3 for mounting a third skeleton part F3, a fourth skeleton part carriage VF4 for mounting a fourth skeleton part F4, a first small part carriage VP1 for mounting a first small part P1 on a front container and a second small part P2 on a rear container, a second small part carriage VP2 for mounting a second small part P2 on a front container and a third small part P3 on a rear container, a third small part carriage VP3 for mounting a third small part P3 on a front container and a fourth small part P4 on a rear container, and a fourth small part carriage 4 for mounting a fourth small part P4 on a front container and a first small part P1 on a rear container. The trolley group G according to embodiment 2 includes 4 total first skeleton part trolleys VF1, second skeleton part trolleys VF2, third skeleton part trolleys VF3, and fourth skeleton part trolleys VF4, and 1 first skeleton part F1, second skeleton part F2, third skeleton part F3, and fourth skeleton part F4 are mounted on each of the first skeleton part trolley VF1, second skeleton part trolley VF2, third skeleton part trolley VF3, and fourth skeleton part trolley VF4, and therefore the trolley group G includes 4 total skeleton parts. Further, a display D that displays an instruction to the operator is provided at a position that can be visually recognized by the operator in the first, second, third, and fourth skeleton part carriages VF1, VF2, VF3, and VF4 that are assembled by the operator. Further, the first module part, the second module part, the third module part, and the fourth module part, which are manufactured through the assembly work of the first skeleton part F1, the second skeleton part F2, the third skeleton part F3, and the fourth skeleton part F4 included in one bogie group G, are preferably assembled to the same vehicle body on the main line Lm, but the present invention is not limited to this. For example, when there are a plurality of main lines, the first to fourth module parts may be assembled to the vehicle body flowing through the main lines at substantially the same timing.

The carriage controller 7 moves the first to fourth frame component carriages VF1 to VF4 and the first to fourth small component carriages VP1 to VP4 in parallel in a state where the first to fourth frame component carriages VF1 to VF4 and the first to fourth small component carriages VP1 to VP4, which constitute a total of 8 carriages of the carriage group G, are connected in a row at the first work station 11. The carriage controller 7 repeatedly feeds the carriage group G composed of the total 8 carriages to the first work station 11. As a result, as shown in fig. 4, the plurality of carriages constituting the plurality of carriage groups G move along the first station route CS1 while being connected in a row.

Here, as shown in fig. 4, the order of charging the 8 carriages constituting each carriage group G is preferably the order of the first frame part carriage VF1, the first widget carriage VP1, the second frame part carriage VF2, the second widget carriage VP2, the third frame part carriage VF3, the third widget carriage VP3, the fourth frame part carriage VF4, and the fourth widget carriage VP 4. By alternately putting in the framework component carriage and the small component carriage in this way, the worker riding the framework component carriage can take out the small components mounted on the small component carriages connected in the front-rear direction in the traveling direction and assemble the small components to the framework component on the same ride. In addition, by previously throwing in the first to fourth framework component carriages VF1 to VF4 in the order of the required work time from short to long in this way, the operator can more reliably end the first to fourth assembly works until the carriage passes through the first work station 11. That is, when the operator performs the first assembly work to the fourth assembly work in the order of the required work time from short to long, the time required for the assembly work of the frame component that is put into the work at a delayed time can be secured.

The truck controller 7 instructs the operator to perform the assembly work by displaying the order of performing the assembly work on the display D mounted on the first frame component carriage VF1, the second frame component carriage VF2, the third frame component carriage VF3, and the fourth frame component carriage VF 4. In the present embodiment, the vehicle controller 7 displays the contents of the assembly work performed in the order of the required work time from short to long, that is, in the order of the first assembly work, the second assembly work, the third assembly work, and the fourth assembly work on the display D.

In the present embodiment, the description has been given of the case where the first to fourth module parts are different types of module parts and the first to fourth required operation times are different, but the present invention is not limited to this. All or any of the first to fourth module parts may be the same type of module part, and all or any of the first to fourth required operation times may be the same.

[ example 3]

Fig. 5 is a view schematically showing a loading sequence of a cart in the module manufacturing system of example 3. In embodiment 3, a case will be described where a plurality of operators perform the following operations in the first work station 11: a first assembling work of manufacturing a first module part by assembling a plurality of first small parts P1 to the first skeleton part F1, and a second assembling work of manufacturing a second module part by assembling a plurality of second small parts P2 to the second skeleton part F2.

In example 3, the passage time taken for the carriage to pass through the first work station 11 was set to 200 seconds. The first required working time corresponding to the man-hour for assembling the first small part P1 with respect to the first skeleton part F1 is 90 seconds, and the second required working time corresponding to the man-hour for assembling the second small part P2 with respect to the second skeleton part F2 is 110 seconds.

In embodiment 3, a first sub-carriage group SG1 and a second sub-carriage group SG2 each composed of a combination of a plurality of different carriages are combined to constitute a single carriage group G. The first sub-deck group SG1 is composed of 4 decks, in total, of two first framework component carriages VF1 on which the first framework components F1 are mounted, a first front widget carriage VP1a on which the first widget P1 is mounted on the front container and the rear container, and a first rear widget carriage VP1b on which the first widget P1 is mounted on the front container and the second widget P2 is mounted on the rear container. The second sub-deck group SG2 is composed of 4 decks, in total, of 2 second framework component carriages VF2 on which the second framework components F2 are mounted, a second front widget carriage VP2a on which the second widgets P2 are mounted on the front container and the rear container, and a second rear widget carriage VP2b on which the second widgets P2 are mounted on the front container and the first widgets P1 are mounted on the rear container. Since the truck group G according to embodiment 3 includes two first skeleton component trucks VF1 and two second skeleton component trucks VF2, and one first skeleton component F1 and one second skeleton component F2 are mounted on each of the first skeleton component truck VF1 and the second skeleton component truck VF2, the truck group G includes four skeleton components in total. Further, a display D that displays an instruction to the operator is provided at a position that can be visually recognized by the operator in the first framework component carriage VF1 and the second framework component carriage VF2 where the assembly operation is performed by the operator. Further, it is preferable that the first module part and the second module part manufactured through the assembling work of the first skeleton part F1 and the second skeleton part F2 included in the bogie group G are assembled to the same vehicle body on the main line Lm, but the present invention is not limited thereto. For example, when there are a plurality of main lines, the first module part and the second module part may be assembled to the vehicle body flowing through the respective main lines at substantially the same timing.

The carriage controller 7 moves the first frame part carriage VF1, the first front small part carriage VP1a, and the first rear small part carriage VP1b in parallel so that the first frame part carriage VF1, the first front small part carriage VP1a, and the first rear small part carriage VP1b, which constitute a total of 4 of the first sub-carriage group SG1, are connected in a row at the first work station 11. The carriage controller 7 moves the second frame part carriage VF2, the second front small part carriage VP2a, and the second rear small part carriage VP2b in parallel in a state where the second frame part carriage VF2, the second front small part carriage VP2a, and the second rear small part carriage VP2b, which constitute a total of 4 of the second sub-carriage group SG2, are connected in a row at the first work station 11. Further, the carriage controller 7 alternately repeats the loading of the first sub-carriage group SG1 and the second sub-carriage group SG2 into the first work station 11 so that the plurality of carriages constituting the first sub-carriage group SG1 and the second sub-carriage group SG2 are connected in a row at the first work station 11, for the first sub-carriage group SG1 and the second sub-carriage group SG2 constituted by the total of four carriages. As a result, as shown in fig. 5, the plurality of carriages constituting the plurality of first sub-carriage groups SG1 and the plurality of second sub-carriage groups SG2 move along the first station route CS1 in a state of being connected in a row.

Here, as shown in fig. 5, the order of putting the four carriages constituting the first sub-carriage group SG1 is preferably the order of the first frame component carriage VF1, the first front small component carriage VP1a, the first frame component carriage VF1, and the first rear small component carriage VP1 b. As shown in fig. 5, the order of putting the four carriages constituting the second sub-carriage group SG2 is preferably the order of the second frame component carriage VF2, the second front small component carriage VP2a, the second frame component carriage VF2, and the second rear small component carriage VP2 b.

Here, the total of the required working times (first total required working time) for the two first skeleton parts F1 included in the first sub-truck group SG1 is 180 seconds, which is shorter than the passing time. The remaining time obtained by subtracting the sum of the required working times for the two first skeleton parts F1 included in the first sub-consist SG1 from the passage time was 20 seconds. Therefore, when the number of workers of the work unit is continuously performing the first assembling work for the two first skeleton parts F1 included in the first sub-truck group SG1, the two first module parts can be completed before the remaining time compared to the passage time.

The sum total of the required working times (second total required working time) for the two second frame parts F2 included in the second sub-truck group SG2 was 220 seconds, which was longer than the passing time. The excess time obtained by subtracting the passing time from the sum of the required working times for the two second skeleton parts F2 included in the second sub-truck group SG2 was 20 seconds. Therefore, when the second assembly work for the two second skeleton parts F2 included in the second sub-truck group SG2 is continuously performed by the number of workers in the work unit, one second module part can be completed until the passage time elapses, but the remaining one second module part cannot be completed.

Therefore, the carriage controller 7 puts the first sub-carriage group SG1 in which the positive remaining time is generated into the first work station 11 before the second sub-carriage group SG2 in which the positive excess time is generated. By putting the plurality of carriages in this order, it is possible to alternately and continuously manufacture two first module parts and two second module parts each until the carriages pass through the first work station 11, on the premise that the assembly work is performed by the operator in the following order.

More specifically, the operator in charge of the assembly work of the first sub-carriage group SG1 previously input performs the first assembly work on the first skeleton component F1 mounted on the first skeleton component carriage VF1 previously input in the first sub-carriage group SG1, and then moves to the first skeleton component carriage VF1 subsequently input in the first sub-carriage group SG1 to perform the first assembly work on the first skeleton component F1. As described above, since the remaining time is 20 seconds, the operator in charge of the first sub-truck group SG1 can complete the second first assembly work before the remaining time of the passage time elapses.

On the other hand, the operator responsible for the assembly work of the second sub-truck group SG2 to be subsequently input performs the second assembly work on the second frame component F2 mounted on the second frame component truck VF2 previously input in the second sub-truck group SG2, and then moves to the second frame component truck VF2 to be subsequently input in the second sub-truck group SG2 to perform the second assembly work on the second frame component F2. As described above, since the elapsed time is 20 seconds, the operator in charge of the second sub-consist SG2 cannot complete the second assembling work until the passage time elapses. Therefore, after the second first assembly work is completed as described above, the operator in charge of the first sub-truck group SG1 moves to the second framework component truck VF2 that is thrown later in the second sub-truck group SG2, and assists the second assembly work for the second framework component F2. As described above, the remaining time of the first sub-carriage group SG1 is equal to or longer than the elapsed time of the second sub-carriage group SG 2. Therefore, by performing the second assembly work in cooperation with the operator in charge of the first sub-truck group SG1 and the operator in charge of the second sub-truck group SG2 as described above, the second assembly work can be completed during the time period from when the target second framework component truck VF2 is thrown into the first work station 11 to when the passage time elapses.

The truck controller 7 also instructs the operator to perform the assembly work by displaying the order of performing the assembly work on the display D mounted on the first framework component truck VF1 and the second framework component truck VF 2. In the present embodiment, the vehicle controller 7 displays the following on the display D: the assembly work is performed in the following work order, that is, the first assembly work for the first skeleton component F1 mounted on the first skeleton component carriage VF1 previously input in the first sub-carriage group SG1, the first assembly work for the first skeleton component F1 mounted on the first skeleton component carriage VF1 subsequently input in the first sub-carriage group SG1, the second assembly work for the second skeleton component F2 mounted on the second skeleton component carriage VF2 previously input in the second sub-carriage group SG2, and the second assembly work for the second skeleton component F2 mounted on the second skeleton component carriage VF2 subsequently input in the second sub-carriage group SG 2.

In addition, in the embodiment, the following case is explained: the truck controller 7 instructs the operator of the order of performing the assembly work by displaying the order of performing the assembly work on the display D mounted on each framework component truck, but the present invention is not limited to this. The display for displaying the content of the instruction from the carriage controller is not limited to each framework component carriage, and may be provided at a position in the work station where the display can be visually recognized by the entire worker who performs the assembly work at the work station.

In the above embodiment, a case has been described in which a carriage group including 2 or more frame components is configured by combining 2 or more frame component carriages on which 1 frame component is mounted, but the present invention is not limited to this. The number of the skeleton parts to be mounted on the skeleton part carriage may be 2 or more, and the carriage group including 2 or more skeleton parts as a whole may be configured.

Claims

1. A manufacturing system for performing an assembly operation of a manufacturing module by assembling a plurality of parts to a workpiece, comprising:

the trolley set consists of more than one workpiece trolley and more than one part trolley; and

a control device for moving the workpiece trolley and the part trolley along a predetermined path including a working station in a predetermined input sequence and

the workpiece carriage constituting the carriage group carries a workpiece and moves in accordance with a command from the control device,

the trolley group comprises more than two workpieces,

the parts carriage constituting the carriage group carries a plurality of parts to be assembled to the workpieces included in the carriage group by an assembling operation performed by an operation main body, and moves in accordance with a command from the control device,

the control device moves the workpiece carriage and the part carriage in such a manner that the workpiece carriage and the part carriage constituting the carriage group are parallel to each other at the work station,

the total required work time corresponding to the assembly man-hours for all the workpieces included in the trolley group is equal to or less than the passage time of the workpiece trolley or the part trolley through the work station,

the carriage group includes a first sub-carriage group including one or more workpiece carriages and one or more part carriages, and a second sub-carriage group including one or more workpiece carriages and one or more part carriages and including workpieces different from those included in the first sub-carriage group,

the control device moves the workpiece carriage and the part carriage in parallel with the workpiece carriage and the part carriage constituting the first sub-carriage group and the workpiece carriage and the part carriage constituting the second sub-carriage group at the work station,

a first total required work time corresponding to the assembly man-hours for all the workpieces included in the first sub-carriage group is shorter than a passage time for the workpiece carriage or the parts carriage to pass through the work station,

a second total required work time corresponding to the assembly man-hours for all the workpieces included in the second sub-carriage group is longer than the passage time,

the remaining time obtained by subtracting the first total required work time from the passage time is equal to or longer than the excess time obtained by subtracting the passage time from the second total required work time.

2. The manufacturing system according to claim 1, wherein the control device instructs a work body on a sequence of performing the assembly work for the workpieces included in the trolley group.

3. The manufacturing system according to claim 1 or 2, wherein all modules manufactured through the assembly work of the workpieces included in the trolley group are assembled to the same vehicle body.

4. The manufacturing system according to claim 1 or 2,

the trolley group comprises a first workpiece trolley for carrying a first workpiece and a second workpiece trolley for carrying a second workpiece,

the assembling work for the first workpiece and the second workpiece includes: a first assembly operation of manufacturing a first module by assembling a plurality of parts to the first workpiece; and a second assembly operation of manufacturing a second module by assembling a plurality of parts to the second workpiece after the first assembly operation is performed,

a first required work time corresponding to the first assembly work is shorter than a second required work time corresponding to the second assembly work,

the control device causes the first workpiece carriage to move prior to the second workpiece carriage.

5. The manufacturing system according to claim 1 or 2,

the workpiece trolley comprises a workpiece platform for arranging the workpiece and an operation platform on which an operation main body can be carried,

the trolley group comprises a first workpiece trolley for carrying a first workpiece and a second workpiece trolley for carrying a second workpiece, and

the first workpiece carriage and the second workpiece carriage are coupled to each other while moving along the work station.