JP7135528B2 - Car body assembly equipment and car body assembly method - Google Patents

Description

The technology disclosed herein belongs to the technical field related to vehicle body assembly equipment and vehicle body assembly methods.

2. Description of the Related Art Conventionally, there has been known a car body assembly facility that assembles a car body by temporarily hammering a cab side panel onto a floor member, performing additional hammering after the temporary hammering, and joining the cab side panel to the floor member.

For example, Patent Literature 1 discloses a car body assembling facility capable of erecting and assembling a plurality of car bodies of different vehicle types. When constructed from a side outer member, a roof beam, and a roof panel, the inner frame portion and the roof beam are temporarily welded to the floor member in the first mounting/temporary fixing stage, and then the first additional stage. The inner frame portion and the roof beam are welded by additional welding, then conveyed to the second mounting/temporary fixing stage, the side outer member is temporarily welded to the inner frame portion in the second mounting/temporary fixing stage, and then , the side outer member is subjected to additional welding in the second additional welding stage, then conveyed to the third mounting/temporary fixing stage, and the roof panel is temporarily welded in the third mounting/temporary fixing stage, and then, It is disclosed that the roof panel is boost welded in the third boost stage.

Further, in the vehicle body assembly equipment described in Patent Document 1, a side member jig for holding the inner skeleton is provided on the first mounting/temporary fixing stage, and the side outer member is held on the second mounting/temporary fixing stage. A second side member fixture is provided.

JP 2009-154815 A

By the way, in the car body assembly equipment as described in Patent Document 1, a station (stage) for temporarily welding (temporary welding) cab side panels (inner skeleton and side outer members) to a floor member and additional welding ( Stations for additional welding) are independent of each other. Therefore, at least two stations are required to join the cab side panel to the floor member, and it is necessary to secure a large assembly space.

In particular, when the cab side panel is composed of an inner panel (inner skeleton) and an outer panel (side outer member), as described in Patent Document 1 above, and each of them is separately joined to the floor member, at least four stations are required. Become. As a result, the assembly space is considerably increased.

The technique disclosed herein has been made in view of the above points, and its purpose is to provide a vehicle body assembly facility for assembling a vehicle body by temporarily and additionally hammering a cab side panel to a floor member. To save the assembly space as much as possible.

In order to solve the above-mentioned problems, the technology disclosed herein temporarily welds a cab side panel to a floor member, and then performs additional punching after the temporary welding to join the cab side panel to the floor member. A conveying device for conveying the floor member, and temporary and additional punching of the cab side panel to the floor member to join the cab side panel to the floor member. and a jig movable along the conveying direction of the conveying device for conveying the cab side panel along the conveying direction with respect to the floor member conveyed to the joining station. wherein the jig conveys the cab side panel to the floor member conveyed to the joining station, and after the cab side panel is temporarily welded to the floor member, the jig is attached to the joining station configured to be retracted along the conveying direction from
The bonding station is configured to additionally bond the temporarily bonded cab side panel to the floor member after the jig is retracted along the conveying direction .

According to this configuration, the vehicle body is assembled by temporarily hammering and additionally hammering the cab side panel to the floor member. In general, the number of welding points for additional welding is greater than the number of welding points for temporary welding. For this reason, temporary hammering can be performed while the cab side panel is held by the jig, but it is difficult to perform additional hammering smoothly while the cab side panel is held by the jig.

On the other hand, in the above configuration, after the cab side panel is temporarily hammered onto the floor member, the jig is temporarily retracted along the conveying direction. It is possible to smoothly perform additional shots even at the station. Therefore, the assembly space can be saved.

Further, in order to smoothly join the cab side panel to the floor member, a certain amount of space is required outside the floor member in the vehicle width direction. In the above configuration, since the jig is retracted along the transport direction, it is easier to form a space outside the floor member in the vehicle width direction. Furthermore, compared with the case where the jig is retracted in the vehicle width direction, the space for retracting the jig can be reduced. For this reason as well, the assembly space can be saved.

In the first embodiment of the vehicle body assembly facility, the cab side panel has an inner panel and an outer panel joined to the outside of the inner panel, and the joining station attaches the inner panel to the floor member. An inner joining station for temporary joining and additional joining, and an outer joining station for temporary joining and additional joining of the outer panel to the semi-assembled member which is the floor member after the temporary joining and additional joining of the inner panel. an inner jig for transporting the inner panel along the transport direction with respect to the floor member transported to the inner joining station; and an inner jig transported to the outer joining station. an outer jig for conveying the outer panel along the conveying direction with respect to the semi-assembled member, wherein the inner jig is adapted to transfer the inner panel to the floor member conveyed to the inner joining station; After the panel is conveyed and the inner panel is tentatively welded to the floor member, the panel is retracted from the inner joining station to the opposite side of the conveying direction. After the jig for the outer panel is retracted to the counter-advance side in the conveying direction, the inner panel that has been tentatively welded is additionally punched to the floor member, and the jig for the outer outer is configured to be attached to the outer joining station. After the outer panel is conveyed to the sub-assembled member conveyed to the sub-assembled member, and the outer panel is temporarily welded to the semi-assembled member, the outer panel is retracted from the outer joining station to the advancing side in the conveying direction. and the outer bonding station is configured to additionally bond the temporarily bonded outer panel to the semi-assembled member after the outer jig is retracted to the advancing side in the conveying direction. It can be said that there is.

According to this configuration, the inner joining station can perform temporary joining and additional joining of the inner panel, and the outer joining station can carry out temporary joining and additional joining of the outer panel. Therefore, even if the inner panel and the outer panel are independently temporarily hammered and additionally hammered to the floor member to assemble the vehicle body, the number of stations may be two. As a result, the assembly space can be saved more effectively.

In addition, by separately joining the inner panel and the outer panel to the floor member, the number of joining points of the inner panel and the outer panel to the floor member can be increased as much as possible. Thereby, the bonding strength of the cab side panel to the floor member can be improved.

In the second embodiment of the vehicle body assembly facility, the cab side panel has an inner panel and an outer panel joined to the outer side of the inner panel,
The joining station performs temporary joining and additional joining of the inner panel to the floor member, and temporary joining and additional joining of the outer panel to the semi-assembled member which is the floor member after the temporary joining and additional joining of the inner panel. and can be executed within the same station,
The jig includes an inner jig for transporting the inner panel along the transport direction with respect to the floor member transported to the joining station, and a jig for the semi-assembled member transported to the joining station. an outer jig for conveying the outer panel along the conveying direction, the inner jig conveying the inner panel to the floor member conveyed to the joining station, and After the inner panel is temporarily hammered onto the members, the outer jig is configured to retreat from the joining station to the opposite side of the conveying direction, and the outer jig is installed in the joining station where the semi-assembled members are assembled. After the outer panel is provisionally welded to the semi-assembled member positioned at the same joining station as the semi-assembled member, the outer panel is retracted from the joining station to the advancing side in the conveying direction, After the inner jig is retracted to the counter-advance side in the conveying direction , the joining station additionally punches the tentatively welded inner panel to the floor member, and the outer jig is moved to the conveying direction. It may also be configured such that after retreating to the advance side of the direction, the outer panel, which has been temporarily hammered, is additionally hammered onto the semi-assembled member.

According to this configuration, it is possible to perform temporary and additional bonding of the inner panel and temporary and additional bonding of the outer panel at one joining station, so that the assembly space can be further effectively reduced.

In addition, the reduction in the number of joining stations can also reduce the number of workers.

In the third embodiment of the vehicle body assembly facility, the vehicle body is different from the first vehicle body, which is assembled by temporarily and additionally hammering the first cab side panel to the first floor member, and the first floor member. The second floor member includes two car bodies, a second car body and a second car body assembled by temporarily and additionally striking a second cab side panel different from the first cab side panel, and the joining station comprises the first car body. a first joining station for temporarily and additionally joining the first cab side panel to the floor member to assemble the first vehicle body; and a second joining station for temporarily and additionally joining the second cab side panels to assemble the second vehicle body, wherein the jig is attached to the first floor member transported to the first joining station. a first jig for transporting the first cab side panel along the transport direction; and a second jig for conveying along the first jig, the first jig for conveying the first cab side panel to the first floor member conveyed to the first bonding station, the After the first cab side panel is temporarily welded to the first floor member, it is retracted from the first joining station along the conveying direction. After the tool is retracted along the conveying direction, the first cab side panel that has been provisionally hammered is additionally hammered onto the first floor member, and the second jig is configured to further hammer the first cab side panel onto the first floor member. After the second cab side panel is transported to the second floor member transported to the joining station, and the second cab side panel is temporarily welded to the second floor member, the second The second joining station is configured to retreat from the joining station along the transport direction, and the second joining station removes the temporary-struck second cab side panel after the second jig is retracted along the transport direction . The retraction direction of the first jig and the retraction direction of the second jig are opposite to each other. Assembly of the first vehicle body and assembly of the second vehicle body at the second joining station can be executed in parallel. good.

According to this configuration, the first joining station and the second joining station can respectively assemble the car bodies, so that the two car bodies can be assembled in parallel. At each station, temporary and additional cab side panels can be performed at the same station, so even if two car bodies are assembled at the same time, the expansion of the assembly space can be suppressed as much as possible. can. Therefore, the assembly space can be saved more efficiently.

Furthermore, since the car bodies can be assembled at the first joining station and the second joining station, respectively, it is possible to produce different vehicle models while minimizing the expansion of the assembly space. Therefore, it is possible to improve the production efficiency while saving the assembly space.

Another aspect of the technology disclosed herein is the technology related to the vehicle body assembly method. Specifically, the object is a vehicle body assembling method for assembling a vehicle body by temporarily hammering a cab side panel to a floor member, performing additional hammering after the temporary hammering, and joining the cab side panel to the floor member. a conveying step of conveying the floor member to a joining station for joining the cab side panel to the floor member; a cab side panel conveying step of conveying along the conveying direction of the floor member using the jig, a temporary bonding step of temporarily bonding the cab side panel conveyed by the jig to the floor member, and the temporary bonding step Then, a jig withdrawal step of withdrawing the jig from the joining station along the conveying direction, and after the jig withdrawal step, the cab side panel is attached to the floor member at the same joining station. and a step of increasing the number of shots.

According to this configuration, after temporary bonding of the cab side panel to the floor member is completed, the jig is temporarily retracted along the conveying direction, so the jig does not become an obstacle, and additional bonding can be performed at the same joining station. It can be done smoothly. In addition, since the jig is retracted along the transport direction, the space for retracting the jig can be smaller than when the jig is retracted in the vehicle width direction. Therefore, the assembly space can be saved.

In the first embodiment of the vehicle body assembly method, the cab side panel has an inner panel and an outer panel joined to the outside of the inner panel, and the joining station joins the inner panel to the floor member. an inner joining station for joining, and an outer joining station for joining the outer panel to the sub-assembled member which is the floor member after the inner panel has been temporarily struck and additionally struck, and the jig comprises an inner jig for transporting the inner panel along the transport direction to the floor member transported to the inner joining station, and an outer panel to the semi-assembled member transported to the outer joining station. and an outer jig for conveying along the conveying direction, and the vehicle body includes the semi-assembled member after the semi-assembled member is assembled by temporarily and additionally striking the inner panel on the floor member. The floor member conveying step conveys the floor member to the inner joining station and the semi-assembled member to the outer joining station. a semi-assembled member conveying step for conveying, wherein the cab side panel conveying step attaches the inner panel to the floor member conveyed to the inner joining station after the floor member conveying step; After the inner panel conveying step of conveying along the conveying direction by a jig and the semi-assembled member conveying step, the outer panel is attached to the semi-assembled member conveyed to the outer joining station by the outer jig. an outer panel conveying step of conveying along the conveying direction by means of a tool, wherein the temporary beating step includes, after the inner panel conveying step, the inner temporary beating step of temporarily beating the inner panel to the floor member; After the outer panel conveying step, an outer temporary hammering step of temporarily hammering the outer panel onto the semi-assembled member is included. After the inner jig retracting step of retracting from the inner joining station to the counter-advancing side in the conveying direction and the outer temporary hammering step, the outer jig is retracted from the outer joining station to the advancing side in the conveying direction. and an outer jig retracting step, and the additional punching step is performed by the inner joining station after the inner jig retracting step. After the inner panel is additionally punched to the floor member and the outer jig retracting process, the outer panel is additionally punched to the semi-assembled member at the outer joining station. It may be configured to include steps.

According to this configuration, even when the vehicle body is assembled by temporarily hammering and additionally hammering the inner panel and the outer panel independently to the floor member, the number of stations may be two. As a result, the assembly space can be saved more effectively.

In a second embodiment of the vehicle body assembly method, the cab side panel has an inner panel and an outer panel joined to the outside of the inner panel, and the joining station temporarily joins the inner panel to the floor member. and the temporary hammering and the additional hammering of the outer panel to the semi-assembled member which is the floor member after the temporary hammering and the additional hammering of the inner panel can be executed in the same station, and The tools include an inner jig for transporting the inner panel along the transport direction to the floor member transported to the joining station, and an outer panel to the semi-assembled member transported to the joining station. and an outer jig that is conveyed along the conveying direction . The outer panel is assembled by temporary and additional punching, and the cab side panel conveying step includes attaching the inner panel to the floor member conveyed to the joining station by the inner jig. an inner panel conveying step of conveying along the conveying direction; and an outer panel conveying step of conveying the semi-assembled member positioned at the same joining station along the conveying direction by the outer panel and the outer jig. and the temporary bonding step includes, after the inner panel conveying step, an inner temporary bonding step of temporarily bonding the inner panel to the floor member conveyed to the joining station, and after the outer panel conveying step, an outer tacking step of tacking the outer panel to the semi-assembled member at the joining station, and the jig retreating step removes the inner jig from the joining station after the inner tacking step. An inner jig retracting step of retracting to the opposite side of the conveying direction, and an outer jig retracting step of retracting the outer jig from the joining station to the advancing side of the conveying direction after the outer temporary hammering step. After the inner jig retracting step, the additional impacting step includes an inner increasing impacting step of increasing the inner panel on the floor member at the joining station, and an outer jig retracting step. After that, an additional outer punching step of additionally punching the outer panel onto the semi-assembled member at the joining station may be included.

According to this configuration, one joining station performs temporary hammering and additional hammering of the inner panel and temporary hammering and additional hammering of the outer panel, so that the assembly space can be further effectively saved.

In the third embodiment of the vehicle body assembly method, the vehicle body is different from the first vehicle body, which is assembled by temporarily and additionally hammering the first cab side panel to the first floor member, and the first floor member. The second floor member includes two car bodies, a second car body and a second car body assembled by temporarily and additionally striking a second cab side panel different from the first cab side panel, and the joining station comprises the first car body. a first joining station for temporarily joining and additionally joining the first cab side panel to the floor member; and a second bonding station for temporarily bonding and additionally bonding the first cab side panel to the first floor member conveyed to the first bonding station in the conveying direction. and a second jig for transporting the second cab side panel along the transport direction with respect to the second floor member transported to the second joining station. a first transporting step of transporting the first floor member to the first joining station as a first vehicle body assembling step of assembling the first vehicle body; a first cab side panel conveying step of conveying the first cab side panel to the first floor member along the conveying direction by the first jig; and a first cab side panel conveying step. After that, a first tacking step of tacking the first cab side panel to the first floor member, and after the first tacking step, the first jig is conveyed from the first joining station. a first jig retracting step of retracting along a direction; a second car body assembling step for assembling the second car body, a second conveying step for conveying the second floor member to the second joining station, and after the second conveying step, the a second cab side panel conveying step of conveying the second cab side panel along the conveying direction by the second jig with respect to the second floor member conveyed to the second joining station; After the second cab side panel conveying step, a second temporary worker for temporarily striking the second cab side panel to the second floor member. a second jig retracting step of retracting the second jig from the second joining station along the conveying direction after the second temporary hammering step; and after the second jig retracting step, a second increasing step of adding the second cab side panel to the second floor member at the second joining station, wherein the first vehicle body assembly step and the second vehicle body assembly step are performed in parallel. and the retraction direction of the first jig in the first jig retraction step and the retraction direction of the second jig in the second jig retraction step are opposite to each other. There may be a configuration that there is.

According to this configuration, since the first vehicle body assembly process and the second vehicle body assembly process can be executed in parallel, two vehicle bodies can be assembled in parallel. At each station, temporary and additional cab side panels can be performed at the same station, so even if two car bodies are assembled at the same time, the expansion of the assembly space can be suppressed as much as possible. can. Therefore, the assembly space can be saved more efficiently.

As described above, according to the technique disclosed herein, after the cab side panel is temporarily welded to the floor member at the joining station, the jig is retracted from the joining station, so that the temporarily welded cab side panel can be attached to the same floor. can be increased at the splicing station. As a result, it is no longer necessary to perform temporary printing and additional printing at separate stations, and the assembly space can be saved.

1 is an exploded perspective view of a vehicle body assembled by the vehicle body assembly facility according to Embodiment 1. FIG. 4 is a flow chart showing a vehicle body assembly process in a vehicle body assembly facility. FIG. 4 is a diagram showing the flow of works in the vehicle body assembly facility, showing a state in which the floor member is carried into the carry-in station; FIG. 4 shows a state in which the floor member has been transported to an inner joining station after the process shown in FIG. 3; FIG. 5 is a diagram showing a state in which the inner panel is transported after the process shown in FIG. 4 and the inner panel is tacked temporarily; FIG. 6 is a diagram showing a state in which the inner jig is retracted after the process shown in FIG. 5 and the inner panel is additionally punched; FIG. 7 shows the sub-assembled members transported to the outer joining station after the process shown in FIG. 6; FIG. 8 is a diagram showing a state in which the outer panel is conveyed and tacked after the process shown in FIG. 7; FIG. 9 is a diagram showing a state in which the outer jig is retracted after the process shown in FIG. 8 and the outer panel is additionally stamped; 8 is a flow chart showing a vehicle body assembly process in the vehicle body assembly facility according to Embodiment 2. FIG. FIG. 10 is a diagram showing the flow of works in the vehicle body assembly facility according to the second embodiment, and showing a state in which the floor member is carried into the carry-in station. FIG. 12 shows the floor members transported to the bonding station after the step shown in FIG. 11; FIG. 13 is a diagram showing a state in which the inner panel is transported after the process shown in FIG. 12 and temporarily hammered; FIG. 14 is a diagram showing a state in which the inner jig is retracted after the process shown in FIG. 13 and the inner panel is additionally punched; FIG. 15 is a diagram showing a state in which the outer panel is transported and temporarily hammered after the process shown in FIG. 14; FIG. 16 is a diagram showing a state in which the outer jig is retracted after the process shown in FIG. 15 and the outer panel is additionally stamped; 10 is a flow chart showing a process of assembling a vehicle body in a vehicle body assembly facility according to Embodiment 3. FIG. FIG. 10 is a diagram showing the flow of works in the vehicle body assembly facility according to Embodiment 3, and showing the state in which the first and second floor members are respectively carried into the first and second carry-in stations. Figure 19 shows the first and second floor members being transported to the first and second bonding stations, respectively, after the steps shown in Figure 18; FIG. 20 is a diagram showing a state in which the cab side panels are transported after the process shown in FIG. 19 and the first and second cab side panels are temporarily pounded to the first and second floor members, respectively; FIG. 21 is a diagram showing a state in which the first and second jigs are retracted after the process shown in FIG. 20 and the first and second cab side panels are additionally stamped;

Exemplary embodiments are described in detail below with reference to the drawings.

(Embodiment 1)
FIG. 1 shows the configuration of a vehicle body 80 assembled by the vehicle body assembly equipment 1 according to the first embodiment. The vehicle body 80 has a floor member 81 that constitutes the floor surface of the vehicle. An engine room 83 for mounting an engine (not shown) is formed by a plurality of frame members 82 in the vehicle front side portion of the floor member 81 . The engine room 83 and the passenger compartment are separated by a dash panel 84, and behind the dash panel 84, a floor panel 85 forms the floor of the passenger compartment and the floor of the luggage compartment.

A pair of left and right side sills 86 are joined to the vehicle front side portion of the floor panel 85 on the vehicle left side and the vehicle right side, respectively. Tire house panels 87 forming tire houses in which rear wheels are arranged are joined to the vehicle rear side portion of the floor panel on the vehicle left side and the vehicle right side, respectively.

The vehicle body 80 has a pair of left and right cab side panels 90 . Each cab side panel 90 has an inner panel 91 and an outer panel 92, respectively. The left and right inner panels 91 are directly joined to the left and right side sills 86 and the left and right tire house panels 87 on the left and right sides of the vehicle, respectively, and joined to the floor member 81 . The left and right outer panels 92 are attached to the inner panel 91 joined to the floor member 81 from outside in the vehicle width direction (that is, the outer panel 92 on the left side of the vehicle is attached to the inner panel 91 on the left side of the vehicle from the left side of the vehicle, and the outer panel 92 on the right side of the vehicle is attached to the inner panel 91 on the left side of the vehicle. from the vehicle right side of the inner panel 91 on the vehicle right side).

The vehicle body 80 has a plurality of roof rains 120 forming the skeleton of the roof portion. Each roof rain 120 is joined to the left and right inner panels 91 in such a manner that the left and right inner panels 91 are connected to each other, with the longitudinal direction thereof being in the vehicle width direction. A roof panel 121 forming a roof portion of the passenger compartment is placed on and joined to the roof rain 120 from above.

Assembly of the vehicle body 80 including joining of the left and right cab side panels 90 to the floor member 81 is performed by the vehicle body assembly facility 1 . The configuration of the vehicle body assembly facility 1 will be described in detail below. In the following description, the direction orthogonal to the conveying direction and the vertical direction, which will be described later, will be referred to as the left-right direction, the left side as viewed from the vehicle body 80 conveyed by the conveyor 2 will be referred to as the left side, and the right side will be referred to as the right side.

The vehicle body assembly equipment 1 performs temporary hammering of a cab side panel 90 on a floor member 81 and additional hammering after the temporary hammering, and assembles a vehicle body by joining the cab side panel 90 to the floor member 81. is. In the vehicle body assembly equipment 1 of the first embodiment, after the inner panel 91 is temporarily hammered and additionally hammered onto the floor member 81 to assemble the semi-assembled member 81a, the outer panel 92 is temporarily hammered and additionally hammered onto the semi-assembled member 81a. , the cab side panel 90 is joined to the floor member 81 .

As shown in FIGS. 3 to 9, the vehicle body assembly facility 1 includes a loading station 10 for loading the floor member 81. As shown in FIGS. The vehicle body assembly facility 1 includes an inner joining station 20 for temporarily joining and additionally joining the inner panel 91 to the floor member 81 to join the inner panel 91 to the floor member 81 . The vehicle body assembly equipment 1 performs temporary hammering and additional hammering of an outer panel 92 on a semi-assembled member 81a (see FIG. 6 etc.), which is a floor member 81 after the inner panel 91 has been temporarily hammered and additionally hammered, to form a floor member. An outer bonding station 30 is provided for bonding an outer panel 92 to 81 . The vehicle body assembly facility 1 includes a delivery station 40 for delivering assembled vehicle bodies 80. - 特許庁The vehicle body assembly facility 1 includes a conveyor 2 (conveying device) that conveys the floor members 81 (sub-assembled members 81a after the inner joining station 20) at least between the stations 10-40. In the first embodiment, the inner and outer joining stations 20 and 30 correspond to joining stations for temporarily joining and additionally joining the cab side panel 90 to the floor member 81 to join the cab side panel 90 to the floor member 81. do.

The vehicle body assembly facility 1 also includes an inner jig 50 for transporting the inner panel 91 to the floor member 81 transported from the loading station 10 to the inner joining station 20 . The vehicle body assembly facility 1 includes an outer jig 60 for transporting the outer panel 92 to the floor member 81 (strictly speaking, the semi-assembled member 81a) transported from the inner joining station 20 to the outer joining station 30. FIG. One inner jig 50 and one outer jig 60 are provided on the left side and the right side corresponding to the pair of left and right inner panels 91 and the pair of left and right outer panels 92, respectively. In the first embodiment, the inner and outer jigs 50 and 60 correspond to jigs for transporting the cab side panel 90 to the floor member 81 transported to the joining station.

As shown in FIGS. 3 to 9, the loading station 10, the inner joining station 20, the outer joining station 30 and the delivery station 40 are arranged along the conveying direction of the conveyor 2. As shown in FIG.

As shown in FIG. 3, the floor member 81 is oriented such that the conveying direction of the conveyor 2 is the vehicle front-rear direction. It is conveyed in the posture of being on the rear side of the vehicle.

The inner joining station 20 has a first holding device 21 that holds the floor member 81 transported into the station. The inner joining station 20 welds (temporarily and additionally) the left and right inner panels 91 conveyed by the respective inner jigs 50 to the floor member 81 conveyed to the inner joining station 20. a plurality of inner welding devices 22. Each inner welding device 22 has a configuration in which a welding gun is provided at the tip of a robot having a plurality of arms. In the inner joining station 20 of the first embodiment, the inner panel 91 is joined to the floor member 81 and each roof rain 120 (see FIG. 1) is joined to the inner panel 91 .

The outer joining station 30 has a second holding device 31 that holds the subassembly 81a transported into the station. The outer joining station 30 welds (temporarily and additionally) the left and right outer panels 92 conveyed by the respective outer jigs 60 to the semi-assembled member 81a conveyed to the outer joining station 30. a plurality of welding devices 32 for the outer. Each outer welding device 32 has a configuration in which a welding gun is provided at the tip of a robot having a plurality of arms. In the outer joining station 30 of the first embodiment, the outer panel 92 is joined to the semi-assembled member 81a, and each roof panel 121 (see FIG. 1) is joined to the outer panel 92 and the roof rain 120. FIG.

Although detailed illustration is omitted, each inner jig 50 has an inner support portion for supporting the inner panel 91 . The inner supporting portion of each inner jig 50 is attached to a jig moving device (not shown). Each inner jig 50 can be moved along the conveying direction of the conveyor 2 by the jig moving device, and can also be moved in the horizontal direction (that is, the direction perpendicular to the conveying direction and the vertical direction). It's becoming As a result, each inner jig 50 retreats from the inner transport position at which the inner panel 91 was transported to the inner joining station 20 to the loading station 10 side (that is, the side opposite to the transport direction) from the inner transport position. It is movable between the carry-in side evacuation position and each. Also, although not shown, each inner jig 50 has a roof rain supporting portion that supports each roof rain 120 with the inner panel 91 aligned with the floor member 81 .

On the other hand, each outer jig 60 has an outer support portion that supports the outer panel 92 . The outer supporting portion of each outer jig 60 is attached to a jig moving device (not shown). Each of the outer jigs 60 can be moved along the conveying direction of the conveyor 2 and in the horizontal direction by the jig moving device. As a result, each outer jig 60 has an outer transport position where the outer panel 92 is transported to the outer joining station 30 and a payout side where the outer panel 92 is transported to the payout station 40 side (that is, advancing side in the transport direction) from the outer transport position. It is movable to and from the retracted position. Also, although not shown, each outer jig 60 has a roof panel supporting portion for supporting each roof panel 121 with the outer panel 92 aligned with the semi-assembled member 81a.

Next, the process of assembling the vehicle body 80 by the vehicle body assembly equipment 1 will be described with reference to FIGS. 2 to 9. FIG. In addition, below, the case where one vehicle body 80 is assembled is demonstrated. Actually, in the car body assembly facility 1, the floor members 81 are intermittently brought in at regular intervals, and the car bodies 80 are intermittently assembled at regular intervals according to the flowchart of FIG.

First, in step S101, the floor member 81 is carried into the carry-in station 10, as shown in FIG. The floor member 81 is carried in such that the advancing side of the conveyer 2 in the conveying direction is the front side of the vehicle. At this time, each inner jig 50 is positioned at the carry-in side retracted position, and each outer jig 60 is positioned at the delivery side retracted position. Further, each inner welding device 22 and each outer welding device 32 are positioned at their standby positions.

Next, in the inner pre-conveying step of step S102, the floor member 81 is conveyed to the inner joining station 20, as shown in FIG. The floor member 81 conveyed into the inner joining station 20 is held by the first holding device 21 . At this time, an inner panel 91 is set on each inner jig 50 . 4 to 6, the first holding device 21 overlaps the floor member 81 and is not visible.

Next, in the inner panel transport step of step S103, as shown in FIG. be done. In this step S103, the left and right inner jigs 50 are moved from the carry-in side retracted position to the advancing side in the conveying direction. moves to the left and is positioned at the inner transport position. At this inner transfer position, the inner jigs 50 position the inner panels 91 on the vehicle left and vehicle right portions of the floor member 81, respectively. Note that the roof rain 120 (see FIG. 1) is transported to the inner joining station 20 in parallel with this step S103.

Subsequently, in the inner tacking step of step S104, the left and right inner panels 91 are tacked to the floor member 81 temporarily. In this step S104, as shown in FIG. 5, with each inner panel 91 supported by each inner jig 50, the welding guns of each inner welding device 22 approach each other, and each welding gun causes a plurality of welding guns to be welded. Weld each temporary welding point. As a result, each inner panel 91 is temporarily fixed to the floor member 81 . In this step S104, the roof rain 120 (see FIG. 1) is temporarily attached to the inner panel 91. As shown in FIG.

Next, in the inner jig retracting step of step S105, the left and right inner jigs 50 are retracted from the inner conveying position to the carry-in side retracting position, as shown in FIG. More specifically, the left inner jig 50 and the right inner jig 50 move leftward and rightward, respectively, and then retreat along the conveying direction to the opposite side of the conveying direction. Accordingly, each inner jig 50 conveys the inner panel 91 to the floor member 81 conveyed to the inner joining station 20 , and the inner panel 91 is temporarily welded to the floor member 81 . After that, it is configured to retreat from the inner joining station 20 to the opposite side of the conveying direction. Since the left and right inner panels 91 are temporarily fixed to the floor member 81 respectively, they are supported by the floor member 81 even if the inner jig 50 is retracted. Although not shown in detail in FIG. 6, when the left and right inner jigs 50 are retracted to the carry-in side retracted positions, the inner welding devices 22 are arranged so as not to hinder the movement of the inner jigs 50 . , temporarily move toward the standby position.

Next, after the inner jigs 50 are retracted in step S105, the left and right inner panels 91 temporarily fixed to the floor member 81 are additionally punched in the inner punching process of step S106. In this step S106, as shown in FIG. 6, the welding guns of each inner welding device 22 approach the floor member 81, and each welding gun welds a plurality of additional welding points. As a result, each inner panel 91 is joined to the floor member 81, and a semi-assembled member 81a, which is the floor member 81 after the inner panel 91 has been temporarily and additionally hammered, is completed. Therefore, the inner joining station 20 is configured to additionally join the temporarily joined inner panel 91 to the floor member 81 after the inner jigs 50 are retracted. In this step S105, the roof rain 120 (see FIG. 1) is added to the inner panel 91. As shown in FIG.

Subsequently, in the outer pre-conveying step of step S107, the semi-assembled member 81a is conveyed from the inner joining station 20 to the outer joining station 30 by the conveyor 2, as shown in FIG. The floor member 81 conveyed into the outer joining station 30 is held by the second holding device 31 . At this time, an outer panel 92 is set on each outer jig 60 . 7 to 9, the second holding device 31 is not visible overlapping the sub-assembly member 81a.

Next, in the outer panel transport step of step S108, as shown in FIG. be done. In this step S108, the left and right outer jigs 60 are moved from the withdrawal side retracted position to the counter-advance side in the conveying direction, and then the left outer jig 60 is moved to the right side, and the right outer jig 60 is moved to the right side. 60 moves to the left and is positioned at the outer transport position. At this outer transport position, each outer jig 60 attaches each outer panel 92 to the left and right inner panels 91 of the semi-assembled member 81a from the outside (from the left to the left inner panel 91 and from the right to the right inner panel 91). from the right side). Note that the roof panel 121 (see FIG. 1) is transported to the outer joining station 30 in parallel with this step S108.

Next, in step S109, the outer panel 92 is temporarily hammered to the semi-assembled member 81a in the outer temporary hammering process. In this step S109, as shown in FIG. 8, with each outer panel 92 supported by each outer jig 60, the welding guns of each outer welding device 32 approach each other, and each welding gun produces a plurality of temporary welds. Weld each point. As a result, each outer panel 92 is temporarily fixed to the semi-assembled member 81a. In this step S109, the roof panel 121 (see FIG. 1) is tentatively attached to the outer panel 92 and the roof rain 120 (see FIG. 1).

Subsequently, in the outer jig retracting step of step S110, the left and right outer jigs 60 are retracted from the outer conveying position to the dispensing side retracting position, as shown in FIG. Specifically, after the left outer jig 60 and the right outer jig 60 move to the left and right, respectively, they retreat along the conveying direction to the advancing side in the conveying direction. Accordingly, each outer jig 60 transports the outer panel 92 to the semi-assembled member 81a transported to the outer joining station 30, and the outer panel 92 is temporarily welded to the semi-assembled member 81a. After that, it is configured to retreat from the outer joining station 30 to the advancing side in the conveying direction. Since the left and right outer panels 92 are temporarily fixed to the semi-assembled member 81a respectively, they are supported by the semi-assembled member 81a even if the outer jig 60 is retracted. Although not shown in detail in FIG. 9, when the left and right outer jigs 60 are retracted to the carry-in side retracted positions, the outer welding devices 32 are arranged so as not to hinder the movement of the outer jigs 60 . , temporarily move toward the standby position.

Next, after the outer jigs 60 are retracted in step S110, the left and right outer panels 92 temporarily fixed to the semi-assembled member 81a are additionally punched in step S111 in the outer punching step. In step S111, as shown in FIG. 9, the welding guns of each outer welding device 32 approach the semi-assembled member 81a and weld a plurality of additional welding points with each welding gun. As a result, each outer panel 92 is joined to the semi-assembled member 81a, each cab side panel 90 is joined to the floor member 81, and the vehicle body 80 is assembled. Therefore, the outer joining station 30 is configured to additionally join the temporarily joined outer panel 92 to the semi-assembled member 81a after the outer jigs 60 are retracted. In this step S111, the roof panel 121 (see FIG. 1) is added to the outer panel 92 and the roof rain 120 (see FIG. 1).

Thereafter, in step S112, the car body 80 assembled in steps S101 to S111 is conveyed from the outer joining station 30 to the delivery station 40 by the conveyor 2, and the car body 80 is delivered.

Here, the number of welding points for additional welding of the inner panel 91 and the outer panel 92 is larger than the number of welding points for temporary welding. Therefore, temporary hammering can be performed while the inner panel 91 and the outer panel 92 are held by the inner and outer jigs 50 and 60. It is difficult to perform this operation smoothly while being held by the jigs 50 and 60 . For this reason, conventionally, the station for temporary punching and the station for additional punching are separated, and the assembly space of the assembly equipment becomes large.

On the other hand, in the first embodiment, after the inner panel 91 is temporarily hammered onto the floor member 81, the inner jig 50 is temporarily retracted along the transport direction to the carry-in side retracted position. do. Further, after the outer panel 92 is temporarily hammered onto the semi-assembled member 81a, the outer jig 60 is temporarily retracted along the transport direction to the withdrawal side retracted position. As a result, when the inner panel 91 and the outer panel 92 are additionally stamped, the inner and outer jigs 50 and 60 do not interfere, and the same joining stations 20 and 30 can smoothly perform the additional stamping. . As a result, the assembly space can be saved.

In particular, when the vehicle body 80 is assembled by separating the inner panel 91 and the outer panel 92 and joining them to the floor member 81, in the conventional equipment, only joining the cab side panel 90 to the floor member 81 requires four stations. was necessary. However, in Embodiment 1, the inner joining station 20 can perform temporary joining and additional joining of the inner panel 91, and the outer joining station 30 can carry out temporary joining and additional joining of the outer panel 92, so two stations are sufficient. As a result, the effect of further saving the assembly space can be exhibited more appropriately.

Here, when joining (welding) the inner panel 91 and the outer panel 92 to the floor member 81 smoothly, the inner and outer joining stations 20 and 30 should be wider than the floor member 81 and the semi-assembled member 81a. Some space is required on the outside (left and right) of the direction. In the above configuration, since the inner and outer jigs 50 and 60 are retracted along the conveying direction of the conveyor 2, it is easier to form a space outside the floor member 81 and the sub-assembly member 81a in the vehicle width direction. . Furthermore, compared with the case where the inner and outer jigs 50 and 60 are retracted in the vehicle width direction, the space for retracting the inner and outer jigs 50 and 60 can be reduced. For this reason as well, the assembly space can be saved.

The loading station 10 is located in the direction in which the inner jig 50 retreats (the counter-advancing side in the transport direction). Since there is enough space in the horizontal direction of the conveyer 2 of the carry-in station 10, by effectively using this space, it is easy to secure a space for the inner jig 50 to retreat. Further, the station positioned in the direction in which the outer jig 60 retreats (advance side in the conveying direction) is the dispensing station 40 . Since there is also a space in the left-right direction of the conveyor 2 of the dispensing station 40, by effectively using this space, it is easy to secure a space for the outer jig 60 to retreat. As a result, the assembly space can be saved more efficiently.

Further, in the first embodiment, the inner panel 91 and the outer panel 92 are additionally punched after the inner and outer jigs 50 and 60 are retracted. For this reason, while the inner panel 91 and the outer panel 92 are being additionally punched, the inner panel 91 and the outer panel 92 to be joined to another next conveyed floor member are attached to the inner and outer jigs, respectively. Can be set to 50,60. As a result, the assembly efficiency of the vehicle body 80 can be improved.

Further, according to the first embodiment, the inner panel 91 and the outer panel 92 are separately joined to the floor member 81 so that the cab side panel 90 is joined to the floor member 81. The number of junction points for 81 can be as large as possible. Thereby, the bonding strength of the cab side panel 90 to the floor member 81 can be improved.

(Embodiment 2)
Hereinafter, Embodiment 2 will be described in detail with reference to the drawings. In the following description, parts common to those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The vehicle body assembly facility 201 of Embodiment 2 differs from Embodiment 1 in that only one joining station is provided for joining the inner panel 91 and the outer panel 92 to the floor member 81 (semi-assembled member 81a). different.

The joining station 220 performs temporary joining and additional joining of the inner panel 91 to the floor member 81, and temporary joining and additional joining of the outer panel 92 to the sub-assembly member 81a which is the floor member 81 after the temporary joining and additional joining of the inner panel 91. It is configured so that the beating and the beating can be executed within the same station. That is, in the second embodiment, one joining station 220 performs temporary and additional bonding of the inner panel 91 and temporary and additional bonding of the outer panel 92 .

As shown in FIGS. 11 to 16, in the second embodiment, the loading station 10, the joining station 220, and the dispensing station 40 are arranged along the conveying direction of the conveyor 2. As shown in FIGS.

The bonding station 220 has a third holding device 221 that holds the floor member 81 transported into the station. The third holding device 221 also holds a semi-assembled member 81a which is the floor member 81 after the inner panel 91 has been temporarily hammered and additionally hammered. The joining station 220 has a plurality of welders for welding (temporary welding and additional welding) the left and right inner panels 91 conveyed by the respective inner jigs 50 to the floor member 81 conveyed to the joining station 220 . It has a welding device 222 . Each welding device 222 has a configuration in which a welding gun is provided at the tip of a robot having a plurality of arms. Each welding device 222 welds (temporary welding and additional welding) the left and right outer panels 92 conveyed by the outer jigs 60 to the semi-assembled members 81a assembled at the joining station 220, respectively. In the joining station 220 of the second embodiment, the inner panel 91 and the outer panel 92 are joined to the floor member 81, and each roof rain 120 (see FIG. 1) is applied to the inner panel 91, so that the outer panel 92 and the roof Each roof panel 121 (see FIG. 1) is joined to the rain 120 .

As in the first embodiment, each inner jig 50 can be moved along the conveying direction of the conveyor 2 and in the horizontal direction by a jig moving device. As a result, each inner jig 50 has an inner transport position at which the inner panel 91 has been transported to the joining station 220, and a loading position at which the inner panel 91 has been transported to the loading station 10 side (that is, the counter-advance side in the transport direction) from the inner transport position. Each can be moved between the side retracted position. On the other hand, each of the outer jigs 60 can be moved along the conveying direction of the conveyor 2 as well as in the horizontal direction by the jig moving device, as in the first embodiment. . As a result, each outer jig 60 has an outer transport position at which the outer panel 92 has been transported to the joining station 220, and a payout side retraction at which the outer panel 92 is transported to the dispensing station 40 side (that is, advancing side in the transport direction) from the outer transport position. It is movable between positions. In this manner, the inner and outer jigs 50 and 60 are configured such that the movement directions when retreating are opposite to each other. Further, in the second embodiment, since there is only one joining station 220, the inner transfer position and the outer transfer position are the same.

Next, the process of assembling the vehicle body 80 by the vehicle body assembly equipment 201 will be described with reference to FIGS. 10 to 16. FIG. In addition, below, the case where one vehicle body 80 is assembled is demonstrated. Actually, the floor member 81 is intermittently brought into the car body assembly facility 201 at regular intervals, and the car body 80 is intermittently assembled at regular intervals according to the flowchart of FIG.

First, in step S201, the floor member 81 is carried into the carry-in station 10, as shown in FIG. The floor member 81 is carried in such that the advancing side of the conveyer 2 in the conveying direction is the front side of the vehicle. At this time, each inner jig 50 is positioned at the carry-in side retracted position, and each outer jig 60 is positioned at the delivery side retracted position. Further, each inner welding device 22 and each outer welding device 32 are positioned at their standby positions.

Next, in the carrying process of step S202, the floor member 81 is carried to the joining station 220 as shown in FIG. The floor member 81 conveyed into the joining station 220 is held by the third holding device 221 . At this time, an inner panel 91 is set on each inner jig 50 . 12 to 16, the third holding device 221 is not visible overlapping the floor member 81 or the sub-assembly member 81a.

Next, in the inner panel transport step of step S203, as shown in FIG. 13, the left and right inner panels 91 are transported by the left and right inner jigs 50 to the floor member 81 transported into the joining station 220. be. In step S203, the left and right inner jigs 50 are moved from the carry-in side retracted position to the advancing side in the conveying direction, and then the left inner jig 50 is moved to the right side and the right inner jig 50 is moved to the right side. moves to the left and is positioned at the inner transport position. At this inner transfer position, the inner jigs 50 position the inner panels 91 on the vehicle left and vehicle right portions of the floor member 81, respectively. Note that the roof rain 120 (see FIG. 1) is transported to the joining station 220 in parallel with this step S203.

Subsequently, the left and right inner panels 91 are temporarily hammered to the floor member 81 in the inner temporary hammering process of step S204. As a result, each inner panel 91 is temporarily fixed to the floor member 81 . In this step S204, the roof rain 120 (see FIG. 1) is temporarily attached to the inner panel 91. As shown in FIG.

Next, in the inner jig withdrawal process of step S205, the left and right inner jigs 50 are withdrawn from the inner transport position to the carry-in side withdrawal position, as shown in FIG. More specifically, the left inner jig 50 and the right inner jig 50 move leftward and rightward, respectively, and then retreat along the conveying direction to the opposite side of the conveying direction. As described above, in the second embodiment, as in the first embodiment, each inner jig 50 conveys the inner panel 91 to the floor member 81 conveyed to the inner joining station 20 to After the inner panel 91 is tentatively welded to the floor member 81, the inner panel 91 is retracted from the inner joining station 20 to the counter-advance side in the conveying direction. Although not shown in detail in FIG. 14, when the left and right inner jigs 50 are retracted to the carry-in side retracted position, each welding device 222 is configured so as not to hinder the movement of each inner jig 50. Temporarily move towards the waiting position.

Next, after the inner jigs 50 are retracted in step S205, the left and right inner panels 91 temporarily fixed to the floor member 81 are additionally punched in the inner punching process of step S206. As a result, each inner panel 91 is joined to the floor member 81, and a semi-assembled member 81a, which is the floor member 81 after the inner panel 91 has been temporarily and additionally hammered, is completed. Therefore, the bonding station 220 is configured to additionally bond the temporarily bonded inner panel 91 to the floor member 81 after the inner jigs 50 are retracted. It should be noted that the roof rain 120 (see FIG. 1) is added to the inner panel 91 in step S205.

Next, in the outer panel transport step of step S207, as shown in FIG. are carried respectively. In this step S207, the left and right outer jigs 60 are moved from the payout side retracted position to the counter-advance side in the conveying direction, and then the left outer jig 60 is moved to the right side, and the right outer jig 60 is moved to the right side. 60 moves to the left and is positioned at the outer transport position. At this outer transport position, each outer jig 60 attaches each outer panel 92 to the left and right inner panels 91 of the semi-assembled member 81a from the outside (from the left to the left inner panel 91 and from the right to the right inner panel 91). from the right side). Although not shown in detail in FIG. 15, when the left and right outer jigs 60 move to the outer conveying position, the welding devices 222 are temporarily moved so as not to interfere with the movement of the outer jigs 60 . automatically move toward the standby position. Also, in parallel with this step S207, the roof panel 121 (see FIG. 1) is transported to the joining station 220. As shown in FIG.

Next, in step S208, the outer panel 92 is temporarily hammered to the semi-assembled member 81a in the outer temporary hammering process. As a result, each outer panel 92 is temporarily fixed to the semi-assembled member 81a. In this step S208, the roof panel 121 (see FIG. 1) is temporarily attached to the outer panel 92 and the roof rain 120 (see FIG. 1).

Subsequently, in the outer jig retracting step of step S209, the left and right outer jigs 60 are retracted from the outer conveying position to the dispensing side retracting position, as shown in FIG. Specifically, after the left outer jig 60 and the right outer jig 60 move to the left and right, respectively, they retreat along the conveying direction to the advancing side in the conveying direction. Thus, in the second embodiment, as in the first embodiment, each outer jig 60 conveys the outer panel 92 to the semi-assembled member 81a conveyed to the joining station 220, and After the outer panel 92 is tentatively welded to the assembly member 81a, the outer panel 92 is retracted from the joining station 220 to the advancing side in the conveying direction. Since the left and right outer panels 92 are temporarily fixed to the semi-assembled member 81a respectively, they are supported by the semi-assembled member 81a even if the outer jig 60 is retracted. Although not shown in detail in FIG. 9, when the left and right outer jigs 60 are retracted to the carry-in side retracted positions, the outer welding devices 32 are arranged so as not to hinder the movement of the outer jigs 60 . , temporarily move toward the standby position.

Next, after the outer jigs 60 are retracted in step S209, the left and right outer panels 92 temporarily fixed to the semi-assembled member 81a are additionally punched in step S210 in the outer punching step. As a result, each outer panel 92 is joined to the semi-assembled member 81a, each cab side panel 90 is joined to the floor member 81, and the vehicle body 80 is assembled. Therefore, the joining station 220 is configured to additionally join the temporarily joined outer panel 92 to the semi-assembled member 81a after the outer jigs 60 are retracted. In this step S210, the roof panel 121 (see FIG. 1) is added to the outer panel 92 and the roof rain 120 (see FIG. 1).

Thereafter, in step S211, the car body 80 assembled in steps S201 to S210 is conveyed from the joining station 220 to the delivery station 40 by the conveyor 2, and the car body 80 is delivered.

Also in the configuration of the second embodiment, after the inner panel 91 is temporarily hammered onto the floor member 81, the inner jig 50 is temporarily retracted along the transport direction to the carry-in side retracted position. Further, after the outer panel 92 is temporarily hammered onto the semi-assembled member 81a, the outer jig 60 is temporarily retracted along the transport direction to the withdrawal side retracted position. Therefore, when the inner panel 91 and the outer panel 92 are additionally stamped, the inner and outer jigs 50 and 60 do not interfere, and the same joining station 220 can smoothly perform the additional stamping. As a result, the assembly space can be saved.

Further, according to the second embodiment, one joining station 220 performs temporary and additional bonding of the inner panel 91 and temporary and additional bonding of the outer panel 92, so that the assembly space can be further effectively reduced. be able to.

Furthermore, according to the second embodiment, the number of joining stations 220 can be reduced, so the number of workers can be reduced and the manufacturing cost can be reduced.

(Embodiment 3)
Hereinafter, Embodiment 3 will be described in detail with reference to the drawings. In the following description, parts common to those of the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

The vehicle body assembly facility 301 of Embodiment 3 differs from Embodiments 1 and 2 in that two vehicle bodies can be assembled in parallel. That is, in the vehicle body assembly facility 301 of Embodiment 3, the first vehicle body 380a assembled by temporarily and additionally hammering the first cab side panel 390a to the first floor member 381a, and the first floor member 381a are Two car bodies, a second car body 380b and a second car body 380b, which are assembled by temporarily and additionally striking a second cab side panel 390b different from the first cab side panel 390a, are assembled simultaneously in parallel with each other. Assembled. The first vehicle body 380a and the second vehicle body 380b may be the same vehicle type or different vehicle types.

Further, the vehicle body assembly facility 301 is different from the first and second embodiments in that it joins (temporarily and additionally) a cab side panel, in which an inner panel and an outer panel are assembled in advance, to a floor member. Furthermore, the car body assembly facility 301 is different from the first and second embodiments in that the loading of the floor members and the unloading of the assembled car body are performed at the same station.

Specifically, as shown in FIGS. 18 to 21, the car body assembly facility 301 includes a first loading/unloading station 310 that carries in a first floor member 381a and unloads the assembled first car body 380a. . The vehicle body assembly facility 301 includes a second loading/unloading station 340 for loading the second floor member 381b and delivering the assembled second vehicle body 380b. The vehicle body assembly equipment 301 temporarily and additionally hammers the first cab side panel 390a to the first floor member 381a, and a first bonding station for bonding the first cab side panel 390a to the first floor member 381a. 320. The vehicle body assembly equipment 301 temporarily and additionally hammers the second cab side panel 390b to the second floor member 381b, and a second bonding station for bonding the second cab side panel 390b to the second floor member 381b. 330. The vehicle body assembly facility 301 includes a first conveyor 302 that transports the first floor member 381a (the first vehicle body 380a after assembly) between at least the first loading/unloading station 310 and the first joining station 320. As shown in FIG. The vehicle body assembly facility 301 includes a second conveyor 303 that transports the second floor member 381b (the second vehicle body 380b after assembly) between at least the second loading/unloading station 340 and the second joining station 330 .

The vehicle body assembly facility 301 also includes a first jig 350 for transporting the first cab side panel 390a to the first floor member 381a transported from the first loading/unloading station 310 to the first joining station 320. . The vehicle body assembly facility 301 includes a second jig 360 for transporting the second cab side panel 390b to the second floor member 381b transported from the second loading/unloading station 340 to the second joining station 330. As shown in FIG. The first jig 350 and the second jig 360 are provided one each on the left side and the right side corresponding to the pair of left and right first and second cab side panels 390a and 390b.

As shown in FIGS. 18-21, the first bonding station 320 and the second bonding station 330 are positioned adjacent to each other. The first loading/unloading station 310 is located on the opposite side of the first bonding station 320 from the second bonding station 330 . The second loading/unloading station 340 is located on the opposite side of the second bonding station 330 from the first bonding station 320 . That is, as shown in FIGS. 18 to 21, the first loading/unloading station 310 and the second loading/unloading station 340, and the first joining station 320 and the second joining station 330 are the first joining station 320 and the second joining station 330. It is arranged symmetrically with respect to the boundary with the second bonding station 330 .

As shown in FIG. 18, the first floor member 381a is arranged so that the conveying direction of the first conveyor 302 is the vehicle front-rear direction. The sheet is conveyed in such a posture that the counter-advance side in the conveying direction faces the rear side of the vehicle. On the other hand, as shown in FIG. 18, the second floor member 381b is oriented so that the conveying direction of the second conveyor 303 is in the longitudinal direction of the vehicle. side, and the counter-advance side in the conveying direction is the front side of the vehicle.

The first bonding station 320 has a holding device 321 that holds the first floor member 381a transported into the station. The first joining station 320 welds (temporary welding) the left and right first cab side panels 390a conveyed by the first jigs 350 to the first floor member 381a conveyed to the first joining station 320. and additional welding). Each first welding device 322 has a configuration in which a welding gun is provided at the tip of a robot having a plurality of arms.

The second bonding station 330 has a holding device 331 that holds the second floor member 381b transported into the station. The second joining station 330 welds (temporary welding) the left and right second cab side panels 390b conveyed by the second jigs 360 to the second floor member 381b conveyed to the second joining station 330. and additional welding). Each second welding device 332 has a configuration in which a welding gun is provided at the tip of a robot having a plurality of arms.

In addition, in the first and second joining stations 320 and 330 of the third embodiment, the first and second cab side panels 390a and 390b are joined to the first and second floor members 381a and 381b, and each cab A roof member (sub-assembled roof rain 120 (see FIG. 1) and roof panel 121 (see FIG. 1)) is joined to each of the side panels 390a and 390b.

Although detailed illustration is omitted, each first jig 350 has a side panel supporting portion that supports the first cab side panel 390a. The side panel supporting portion of each first jig 350 is attached to a jig moving device. Each of the first jigs 350 can be moved along the conveying direction of the first conveyor 302 and can be moved in the horizontal direction by the jig moving device. As a result, each of the first jigs 350 moves to the first transport position where the first cab side panel 390a is transported to the first bonding station 320, and the first transport position where the first cab side panel 390a is retracted from the first transport position to the first loading/unloading station 310 side. 1 retracted position. Also, although not shown, each first jig 350 has a roof supporting portion that supports the roof member with the first cab side panel 390a aligned with the first floor member 381a.

On the other hand, each second jig 360 has a side panel supporting portion that supports the second cab side panel 390b. The side panel supporting portion of each second jig 360 is suspended from a jig moving device. Each of the second jigs 360 is movable along the conveying direction of the second conveyor 303 and in the left-right direction by a jig moving device. As a result, each of the second jigs 360 moves to the second transport position where the second cab side panel 390b is transported to the second bonding station 330, and the second transport position where the second cab side panel 390b is retracted from the second transport position to the second loading/unloading station 340 side. 2 can be moved between the retracted positions. Also, although not shown, each second jig 360 has a roof supporting portion that supports the roof member while the second cab side panel 390b is aligned with the second floor member 381b.

Since the first and second loading/unloading stations 310, 340 are arranged symmetrically with respect to the boundaries of the first and second bonding stations 320, 330, the first jig 350 is positioned at the first transport position. The direction in which the second jig 360 is retracted from the second transfer position to the first retracted position and the direction in which the second jig 360 is retracted from the second transport position to the second retracted position are opposite to each other. As a result, even when the assembly of the first vehicle body 380a and the assembly of the second vehicle body 380b are performed in parallel, the first jig 350 and the second jig 360 do not interfere with each other.

Next, the process of assembling the first vehicle body 380a and the second vehicle body 380b by the vehicle body assembly equipment 301 will be described with reference to FIGS. 17 to 21. FIG. In addition, below, the case where one 1st vehicle body 380a and one 2nd vehicle body 380b are assembled is demonstrated. Actually, in the car body assembly facility 301, the first and second floor members 381a and 381b are intermittently brought in at regular intervals. It is assembled intermittently at regular intervals.

First, in step S301, the first floor member 381a is carried into the first loading/unloading station 310, and the second floor member 381b is loaded into the second loading/unloading station 340, as shown in FIG. At this point, each first jig 350 is positioned at the first retracted position, and each second jig 360 is positioned at the second retracted position. Also, each of the first welding devices 322 and each of the second welding devices 332 are positioned at their standby positions.

Next, in the transporting process of step S302, the first floor member 381a is transported to the first bonding station 320, and the second floor member 381b is transported to the second bonding station 330, as shown in FIG. The first and second floor members 381a, 381b conveyed into the first and second bonding stations 320, 330 are held by the holding devices 321, 331 of the respective bonding stations 320, 330, respectively. At this time, the first cab side panels 390a are set on the first jigs 350, respectively, and the second cab side panels 390b are set on the second jigs 360, respectively. The transporting process of step S302 corresponds to the first transporting process and the second transporting process.

Next, in the cab side panel transport step of step S303, as shown in FIG. Each cab side panel 390a is transported. Further, the left and right second cab side panels 390b are carried by the left and right second jigs 360 to the second floor member 381b carried into the second joining station 330, respectively. In this step S303, after the left and right first jigs 350 move along the transport direction from the first retracted position, the left first jig 350 moves to the right side, and the right first jig 350 moves to the left side. to the first transport position. At this first transport position, each first jig 350 positions each first cab side panel 390a on the vehicle left side and vehicle right side portions of the first floor member 381a, respectively. After the left and right second jigs 360 move from the second retracted position along the transport direction, the left second jig 360 moves to the right and the right second jig 360 moves to the left. and is positioned at the second transport position. At the second transport position, each second jig 360 positions each second cab side panel 390b on the vehicle left and vehicle right portions of the second floor member 381b, respectively. In parallel with this step S303, the roof members are conveyed to the first and second joining stations 320, 330, respectively. The cab side panel transfer step of step S303 corresponds to the first cab side panel transfer step and the second cab side panel transfer step.

Subsequently, in the temporary hammering step of step S304, the left and right first cab side panels 390a are temporarily hammered to the first floor member 381a, and the left and right second cab side panels 390b are temporarily hammered to the second floor member 381b. make a provisional shot. As a result, the first cab side panels 390a are temporarily fixed to the first floor member 381a, and the second cab side panels 390b are temporarily fixed to the second floor member 381b. In step S304, the roof members are temporarily welded to the first and second cab side panels 390a and 390b. The tacking step of step S304 corresponds to the first tacking step and the second tacking step.

Next, in the jig withdrawal step of step S305, the left and right first jigs 350 are withdrawn from the first transfer position to the first withdrawal position, as shown in FIG. Specifically, the first jig 350 on the left side moves to the left side, and the first jig 350 on the right side moves to the right side, and then retracts to the first retraction position along the transport direction. Further, the left and right second jigs 360 are retracted from the second transfer position to the second retraction position, as shown in FIG. Specifically, the second jig 360 on the left moves to the left and the second jig 360 on the right moves to the right, and then retracts to the second retraction position along the transport direction. Thus, each first and second jig 350,360 provides first and second jigs for first and second floor members 381a,381b conveyed to first and second bonding stations 320,330. After the cab side panels 390a and 390b are respectively transported and the first and second cab side panels 390a and 390b are tacked to the first and second floor members 381a and 381b respectively, the first and second It is configured to retreat from the two joining stations 320 and 330 in directions facing each other along the transport direction. Although not shown in detail in FIG. 21, when the left and right first and second jigs 350, 360 are respectively retracted to the first and second retracted positions, the first and second welding devices 322, 332 move temporarily toward the standby position so as not to hinder the movement of the first and second jigs 350 and 360, respectively. The jig evacuation process of step S305 corresponds to the first jig evacuation process and the second jig evacuation process.

Next, after the first and second jigs 350 and 360 are retracted in step S305, the first and second jigs temporarily fixed to the first and second floor members 381a and 381b, respectively, in step S306 for additional impacting. 2 The cab side panels 390a and 390b are increased. As a result, the first and second cab side panels 390a, 390b are respectively joined to the first and second floor members 381a, 381b to complete the first and second vehicle bodies 380a, 380b. Therefore, the first and second joining stations 320, 330, after the respective first and second jigs 350, 360 are retracted, assemble the temporarily welded first and second cab side panels 390a, 390b into the first joints. and second floor members 381a and 381b. In this step S306, the roof member is added to the first and second cab side panels 390a and 390b. The additional printing process of step S306 corresponds to the first additional printing process and the second additional printing process.

After that, in step S307, the first and second car bodies 380a, 380b assembled in steps S301 to S306 are transferred from the first and second joining stations 320, 330 by the first and second conveyors 302, 303, respectively. , the first and second transport/discharge stations 310 and 340, and the first and second car bodies 380a and 380b are dispensed.

According to the third embodiment, the first joining station 320 and the second joining station 330 can assemble the car bodies 380a and 380b, respectively, so that the two car bodies 380a and 380b can be assembled in parallel. In addition, at the joining stations 320 and 330, temporary and additional joining of the cab side panels 390a and 390b can be performed at the same station. Expansion of assembly space can be suppressed as much as possible. Therefore, the assembly space can be efficiently saved.

Furthermore, since the car bodies 380a and 380b can be assembled at the first joining station 320 and the second joining station 330, respectively, it is possible to produce different vehicle models while minimizing the expansion of the assembly space. Therefore, it is possible to improve the production efficiency while saving the assembly space.

(Other embodiments)
The technology disclosed herein is not limited to the above embodiments, and substitutions are possible without departing from the scope of the claims.

For example, in the car body assembly equipment 1, 201 that intermittently assembles one car body 80 as in Embodiments 1 and 2 (i.e., equipment that does not assemble a plurality of car bodies in parallel as in Embodiment 3), Although the inner panel 91 and the outer panel 92 are separated and joined to the floor member 81, the inner panel 91 and the outer panel 92 are not limited to this. You may make it join the floor member 81 to the cab side panel 90 which joined this. In this case, only one joining station is required for joining the cab side panels 90 .

Further, in the above-described third embodiment, a case has been described in which each step of assembling the first vehicle body 380a and each step of assembling the second vehicle body 380b proceed at the same timing. The timing of the process and each process of assembling the second vehicle body 380b may be different. For example, on the one hand, when the first floor member 381a is being carried in (that is, during the carrying-in process), on the other hand, the second cab side panel 390b is temporarily hammered onto the second floor member 381b. may

Furthermore, in Embodiments 1 to 3 above, welding is performed by the welding devices 22, 32, 222, 322, and 332 having a plurality of arms. There may be.

The above-described embodiments are merely examples, and should not be construed as limiting the scope of the present disclosure. The scope of the present disclosure is defined by the claims, and all modifications and changes within the equivalent range of the claims are within the scope of the present disclosure.

The technology disclosed herein is useful for vehicle body assembly equipment that assembles a vehicle body by temporarily hammering a cab side panel onto a floor member, performing additional hammering after the temporary hammering, and joining the cab side panel to the floor member. is.

1 Car body assembly equipment 2 Conveyor (conveyor)
20 Inner joining station 30 Outer joining station 50 Inner jig 60 Outer jig 80 Car body 81 Floor member 81a Semi-assembled member 90 Cab side panel 91 Inner panel 92 Outer panel 201 Car body assembly facility 220 Joining station 301 Car body assembly facility 320 First Joining station 330 Second joining station 350 First jig 360 Second jig 380a First vehicle body 381a First floor member 390a First cab side panel 380b Second vehicle body 381b Second floor member 390b Second cab side panel

Claims (8)

A vehicle body assembly facility for assembling a vehicle body by temporarily hammering a cab side panel against a floor member and additionally hammering after the temporary hammering, and joining the cab side panel to the floor member,
a conveying device for conveying the floor member;
a bonding station for temporarily bonding and additionally bonding the cab side panel to the floor member to bond the cab side panel to the floor member;
a jig that is movable along the transport direction of the transport device and transports the cab side panel along the transport direction with respect to the floor member transported to the joining station;
The jig transports the cab side panel to the floor member transported to the joining station, and after the cab side panel is temporarily welded to the floor member, the jig moves from the joining station to the configured to retract along the conveying direction,
The vehicle body assembly, wherein the bonding station is configured to increase the temporarily bonded cab side panel to the floor member after the jig is retracted along the conveying direction. Facility. In the vehicle body assembly facility according to claim 1,
The cab side panel has an inner panel and an outer panel joined to the outside of the inner panel,
The joining station comprises an inner joining station for temporarily joining and additionally joining the inner panel to the floor member, and a semi-assembled member which is the floor member after the inner panel has been temporarily joined and additionally joined. an outer joining station for temporary and additional joining of the outer panel;
The jig includes an inner jig for transporting the inner panel along the transport direction with respect to the floor member transported to the inner joining station, and the semi-assembled member transported to the outer joining station. and an outer jig for transporting the outer panel along the transport direction ,
The inner jig transports the inner panel to the floor member transported to the inner joining station, and after the inner panel is temporarily welded to the floor member, the inner joining station is configured to retreat from the conveying direction to the opposite side of the conveying direction,
The inner joining station is configured to, after the inner jig is retracted to the counter-advancing side in the conveying direction , additionally join the tentatively joined inner panel to the floor member,
The outer jig transports the outer panel to the semi-assembled member transported to the outer joining station, and after the outer panel is temporarily welded to the semi-assembled member, the outer joining station is configured to retreat from the advancing side in the conveying direction,
The outer joining station is configured to additionally join the temporary-jointed outer panel to the semi-assembled members after the outer jig is retracted to the advancing side in the conveying direction. and car body assembly equipment. In the vehicle body assembly facility according to claim 1,
The cab side panel has an inner panel and an outer panel joined to the outside of the inner panel,
The joining station performs temporary joining and additional joining of the inner panel to the floor member, and temporary joining and additional joining of the outer panel to the semi-assembled member which is the floor member after the temporary joining and additional joining of the inner panel. and can be executed within the same station,
The jig includes an inner jig for transporting the inner panel along the transport direction with respect to the floor member transported to the joining station, and a jig for the semi-assembled member transported to the joining station. an outer jig for transporting the outer panel along the transport direction ,
The inner jig transports the inner panel to the floor member transported to the joining station, and after the inner panel is provisionally welded to the floor member, the inner panel moves from the joining station to the floor member. configured to retract to the counter-advance side of the conveying direction,
The outer jig is provided for the semi-assembled members positioned at the same joining station as the joining station where the semi-assembled members are assembled, and after the outer panel is temporarily welded to the semi-assembled members, the joining is performed. It is configured to retreat from the station to the advancing side in the conveying direction,
After the inner jig is retracted to the counter-advance side in the conveying direction , the joining station additionally punches the tentatively welded inner panel to the floor member, and moves the outer jig to the floor member. The vehicle body assembly facility is constructed so as to additionally punch the outer panel, which has been temporarily hammered, onto the semi-assembled member after retreating to the advancing side in the conveying direction . In the vehicle body assembly facility according to claim 1,
The vehicle body includes a first vehicle body that is assembled by temporarily and additionally hammering a first cab side panel to a first floor member, and a second floor member that is different from the first floor member. Including two car bodies with a second car body that is assembled by temporarily striking and multiplying a second cab side panel different from the cab side panel,
The joining station comprises: a first joining station for assembling the first vehicle body by temporary joining and additional joining of the first cab side panel to the first floor member; a second joining station for temporarily and additionally joining the second cab side panel to the second floor member to assemble the second vehicle body;
The jig includes a first jig for transporting the first cab side panel along the transport direction with respect to the first floor member transported to the first joining station, and a first jig for transporting the first cab side panel to the second joining station. a second jig for transporting the second cab side panel along the transport direction with respect to the second floor member,
The first jig transports the first cab side panel to the first floor member transported to the first joining station, and the first cab side panel to the first floor member. is tentatively welded, it is configured to retreat from the first joining station along the conveying direction,
The first bonding station is configured to additionally bond the temporarily bonded first cab side panel to the first floor member after the first jig is retracted along the conveying direction. ,
The second jig transports the second cab side panel to the second floor member transported to the second joining station, and the second cab side panel to the second floor member. is provisionally welded, it is configured to retreat from the second joining station along the conveying direction,
The second bonding station is configured to additionally bond the temporarily bonded second cab side panel to the second floor member after the second jig is retracted along the conveying direction. ,
the retraction direction of the first jig and the retraction direction of the second jig are directions facing each other,
A car body assembly facility capable of concurrently assembling the first car body at the first joining station and assembling the second car body at the second joining station. A vehicle body assembly method for assembling a vehicle body by temporarily hammering a cab side panel to a floor member and additionally hammering after the temporary hammering, and joining the cab side panel to the floor member,
a conveying step of conveying the floor member to a joining station for joining the cab side panel to the floor member;
a cab side panel conveying step of conveying the cab side panel along the conveying direction of the floor member using a jig with respect to the floor member conveyed to the joining station;
a tacking step of tacking the cab side panel conveyed along the conveying direction by the jig to the floor member;
a jig withdrawal step of withdrawing the jig from the joining station along the conveying direction after the provisional hammering step;
A method for assembling a vehicle body, further comprising: after the jig retracting step, an additional step of additionally punching the cab side panel onto the floor member at the same joining station. In the vehicle body assembly method according to claim 5,
The cab side panel has an inner panel and an outer panel joined to the outside of the inner panel,
The joining station comprises an inner joining station for joining the inner panel to the floor member, and an outer panel for joining the semi-assembled member which is the floor member after the inner panel has been temporarily and additionally struck. an outer joining station for joining the
The jig includes an inner jig for transporting the inner panel along the transport direction with respect to the floor member transported to the inner joining station, and the semi-assembled member transported to the outer joining station. and an outer jig for transporting the outer panel along the transport direction ,
The vehicle body is assembled by temporarily and additionally hammering the inner panel to the floor member to assemble the semi-assembled member, and then temporarily and additionally hammering the outer panel to the semi-assembled member. ,
The transporting step includes a floor member transporting step of transporting the floor member to the inner joining station and a semi-assembled member transporting step of transporting the semi-assembled member to the outer joining station,
In the cab side panel conveying step, after the floor member conveying step, the inner panel is conveyed along the conveying direction by the inner jig to the floor member conveyed to the inner joining station. After the inner panel conveying step and the semi-assembled member conveying step, the outer panel is conveyed along the conveying direction by the outer jig with respect to the semi-assembled member conveyed to the outer joining station. including a conveying process,
The tacking step comprises: an inner tacking step of tacking the inner panel to the floor member after the inner panel conveying step; and an outer panel to the semi-assembled member after the outer panel conveying step. Including an outer temporary hitting step for temporary hitting,
The jig retracting step includes, after the inner temporary hammering step, the inner jig retracting step of retracting the inner jig from the inner joining station to the counter-advance side in the conveying direction, and the outer temporary hammering step. an outer jig retracting step of retracting the outer jig from the outer joining station to the advancing side in the conveying direction;
The additional punching step includes, after the inner jig withdrawal step, an inner additional punching step of additionally punching the inner panel onto the floor member at the inner joining station, and after the outer jig withdrawal step, and an outer joining step of additionally joining the outer panel to the semi-assembled member at the outer joining station. In the vehicle body assembly method according to claim 5,
The cab side panel has an inner panel and an outer panel joined to the outside of the inner panel,
The joining station performs temporary joining and additional joining of the inner panel to the floor member, and temporary joining and additional joining of the outer panel to the semi-assembled member which is the floor member after the temporary joining and additional joining of the inner panel. and can be executed within the same station,
The jig includes an inner jig for transporting the inner panel along the transport direction with respect to the floor member transported to the joining station, and a jig for the semi-assembled member transported to the joining station. an outer jig for transporting the outer panel along the transport direction ,
The vehicle body is assembled by temporarily and additionally hammering the inner panel to the floor member to assemble the semi-assembled member, and then temporarily and additionally hammering the outer panel to the semi-assembled member. ,
The cab side panel conveying step is the same as the inner panel conveying step of conveying the inner panel along the conveying direction by the inner jig with respect to the floor member conveyed to the joining station. an outer panel conveying step of conveying the semi-assembled member positioned at the station along the conveying direction by the outer panel and the outer jig,
The tacking step includes an inner tacking step of tacking the inner panel temporarily to the floor member conveyed to the joining station after the inner panel conveying step, and a joining station after the outer panel conveying step. and an outer tacking step of tacking the outer panel to the semi-assembled member in
The jig retracting step includes, after the inner temporary hammering step, an inner jig retracting step of retracting the inner jig from the joining station to the counter-advance side in the conveying direction, and after the outer temporary hammering step. and an outer jig retracting step of retracting the outer jig from the joining station to the advancing side in the conveying direction,
The additional punching step includes, after the inner jig withdrawal step, an inner additional punching step of additionally punching the inner panel onto the floor member at the joining station, and after the outer jig withdrawal step, the and an outer punching step of punching the outer panel onto the semi-assembled member at a joining station. In the vehicle body assembly method according to claim 5,
The vehicle body includes a first vehicle body that is assembled by temporarily and additionally hammering a first cab side panel to a first floor member, and a second floor member that is different from the first floor member. Including two car bodies with a second car body that is assembled by temporarily striking and multiplying a second cab side panel different from the cab side panel,
The bonding station includes a first bonding station for temporary bonding and additional bonding of the first cab side panel to the first floor member, and a bonding station adjacent to the first bonding station and to the second floor member. and a second bonding station for temporarily and additionally bonding the second cab side panel,
The jig includes a first jig for transporting the first cab side panel along the transport direction with respect to the first floor member transported to the first joining station, and a first jig for transporting the first cab side panel to the second joining station. a second jig for transporting the second cab side panel along the transport direction with respect to the second floor member,
As a first vehicle body assembly step for assembling the first vehicle body,
a first conveying step of conveying the first floor member to the first bonding station;
After the first transporting step, the first cab side panel is transported along the transport direction by the first jig with respect to the first floor member transported to the first joining station. a cab side panel conveying process;
a first tacking step of tacking the first cab side panel to the first floor member after the first cab side panel conveying step;
a first jig retracting step of retracting the first jig from the first joining station along the conveying direction after the first temporary hammering step;
After the first jig retracting step, a first additional step of adding the first cab side panel to the first floor member at the first joining station;
including
As a second vehicle body assembly step for assembling the second vehicle body,
a second conveying step of conveying the second floor member to the second bonding station;
After the second conveying step, the second cab side panel is conveyed along the conveying direction by the second jig to the second floor member conveyed to the second joining station. 2 cab side panel conveying process;
a second tacking step of tacking the second cab side panel to the second floor member after the second cab side panel conveying step;
a second jig retracting step of retracting the second jig from the second joining station along the conveying direction after the second temporary hammering step;
After the second jig retracting step, a second increasing step of adding the second cab side panel to the second floor member at the second joining station;
including
The first vehicle body assembly process and the second vehicle body assembly process are processes that can be executed in parallel,
A method for assembling a vehicle body, wherein a retracting direction of the first jig in the first jig retracting step and a retracting direction of the second jig in the second jig retracting step are opposite to each other. .

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