JP2018052269A - Production method and production facility of vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve reduction in equipment cost by standardization of fixtures for integrating components and the like even when assembling an ordinary skeleton vehicle body and an endoskeleton vehicle body in a mixing state.SOLUTION: The production method of vehicle body includes: a process of assembling side structure complements 13L, 13R formed by joining side inner complements 11L, 11R to side outer complements 12L, 12R on a floor complement 14 to form an ordinary skeleton vehicle body 15A; a process of assembling the side inner complements 11L, 11R on a floor complement 14 to form a side inner complement body construction 15B, the two processes being performed at a common assembly station 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle body production method and production equipment for producing a normal skeleton vehicle body and an endoskeleton vehicle body in a single production line.

  Conventionally, as a method for assembling a vehicle body, a so-called normal skeletal vehicle body is known in which a side structure complex in which a side inner complete (comp) and a side outer compound are joined and integrated is assembled to a floor complex. . On the other hand, recently, the side inner comple and the side outer comple are not integrated, but first, the side inner comple is assembled to the floor comple, and then the side outer comple is assembled to the side inner comple. Many of the skeleton bodies that are produced are also used.

  Whether to adopt a normal skeleton body or an internal skeleton body is selected according to the vehicle body structure or the like for each vehicle type, and these are often produced in a mixed state in one assembly line.

  For example, Patent Document 1 (Japanese Patent No. 5235172) discloses a side structure comple- tion station that joins a side inner comple and a side outer comple to one assembly line to form a side structure comple- tion, and a side inner comple- tion. The assembly is assembled to the floor complex, and the left and right side inner components are connected by roof braces to assemble the side floor structure complex, and the side outer structure complex is assembled to the side floor structure complex. Alternatively, a technique is disclosed that includes a combination assembly station for assembling a side structure complex to a floor complex, further connecting left and right side inner components with a roof brace and assembling a roof, and a roof rear mounting station for assembling the roof. There.

  Then, when assembling the normal skeleton body, the floor complex is transferred to the dual-purpose assembly station by bypassing the endoskeleton assembly station, and the side structure complex is assembled, and then the roof is assembled at the roof mounting station. On the other hand, when assembling the endoskeletal vehicle body, the side outer comple is transferred to the combined assembly station, bypassing the side structure comple station, and assembled to the side inner comple, and then the roof is assembled.

Japanese Patent No. 5235172

  However, in the technique disclosed in the above-described document, when assembling a normal skeleton body, it is necessary to secure a conveyance path for bypassing the endoskeleton assembly station, which increases the equipment cost.

  Also, when assembling the endoskeleton body, the roof is attached at the combined assembly station, so the arm of the welding robot cannot be inserted into the body from above the body, and the degree of freedom for additional hits is limited. There is an inconvenience.

  Furthermore, since the roof brace is assembled at the endoskeleton station in the endoskeleton body and is assembled at the dual assembly station in the normal framework body, the jig for connecting the roof brace is also combined with the endoskeleton assembly station. Necessary for both stations. Similarly, since the roof is assembled at the dual-purpose assembly station for the internal skeleton body, and is normally assembled at the roof rear-end station for the skeleton body, the jig for joining the roof can also be combined with the dual-purpose assembly station and the roof rear-end station. Necessary for both. As a result, there is a problem that equipment costs increase.

  In view of the above circumstances, the present invention reduces the number of conveyance paths that bypass the assembly station as much as possible and improves the efficiency of production even when the normal skeleton body and the inner skeleton body are mixed and assembled. It is an object of the present invention to provide a vehicle body production method and production equipment that can reduce the equipment cost by unifying the jigs to be joined.

  The present invention relates to a vehicle body production method in which a normal skeleton vehicle body and an internal skeleton vehicle body are mixed in one production line, and the left and right side inner compounds and the left and right side outer compounds are joined to each other. A first step of forming a side structure complex; a second step of forming a normal skeleton vehicle body by assembling the left and right side structure composites to a floor complex after the first step; and the left and right side inner compounds. 1 'process for assembling the floor inner assembly to form a side inner comple body body, and after the first 1' process, the left and right side outer compl The second step of forming the normal skeleton body and the side inner compound body core It said first 'forming a is performed in a common assembly station.

  The present invention relates to a production facility for a vehicle body that is produced by mixing a normal skeleton vehicle body and an internal skeleton vehicle body in a single production line, by joining the left and right side inner compounds and the left and right side outer compounds respectively. A first station that forms a side structure compound, a second station that forms the normal skeleton body by assembling the left and right side structure compounds to the floor compound, and the left and right side inner compounds that are assembled to the floor compound. A first ′ station that forms a side inner complex body body; and a second ′ station that forms an inner skeleton body by assembling the left and right side outer complex bodies to the side inner complex body body, The second station forming the vehicle body and the side inner complex bodycon It said first 'station is common to form.

  According to the present invention, since the station that realizes the process of forming the normal skeleton body and the station that realizes the process of forming the side inner complex bodycon are made common, the normal skeleton car body and the endoskeleton car body can be mixed. Even when assembling, the number of conveyance paths that bypass the assembly station can be reduced as much as possible to improve production efficiency, and the equipment cost can be reduced by unifying jigs for joining parts. Can do.

Schematic diagram of body production line Explanatory drawing showing the flow of the production line for normal skeleton bodies Explanatory drawing showing the flow of the production line for endoskeleton bodies

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows a production line for vehicle bodies. In this production line, a normal skeleton vehicle body and an endoskeleton vehicle body having different assembly order of components are mixedly produced.

  This production line includes left and right side inner complete (comp) stations 1L and 1R, left and right side outer complete stations 2L and 2R, and left and right side structure complete stations 3L and 3R as a first station for realizing the first process. , A floor construction station 4, a second station that realizes the second step, or a body construction (bodycon) auto-merging station 5 as a first 'station that realizes the first' step, and a second 'that realizes the second' step. It has an outer station 6 as a station, a roof charging station 7 on which a roof 17 is waiting, and a roof rear loading station 8.

  Further, the side inner comple station 1L, 1R and the body contra automatic station 5 can be communicated with each other via the inner comple transfer paths 21L, 21R. Further, branch points 26L and 26R are provided in the middle of the inner-complet transport paths 21L and 21R so as to be able to communicate with the side structure-complet stations 3L and 3R.

  The side outer compound stations 2L and 2R and the outer station 6 can be communicated with each other via the outer compound conveying paths 22L and 22R. In addition, branch points 27L and 27R are provided in the middle of the outer compound transport paths 22L and 22R so as to be able to communicate with the side structure compare stations 3L and 3R.

  In addition, the side structure compound stations 3L and 3R and the body structure automatic station 5 can be communicated with each other via the side structure compound conveyance paths 23L and 23R. Further, the floor loading station 4 can be freely communicated with the bodycon automating station 5 through the floorcomple conveyance path 24. Further, the roof charging station 7 can communicate with the roof post-loading station 8 via the roof conveyance path 25. Each of the transport paths 21L, 21R, 22L, 22R, 23L, 23R, 24, and 25 is provided with shuttle transport means such as a carriage and an overhead conveyor that move along the laid rails.

  In the production line, a body contour automating station 5, an outer station 6, and a roof post-mounting station 8 are provided in order from the upstream side on the main line. Then, for each of the stations 5, 6 and 8, the parts manufactured at the stations 1L, 1R, 2L, 2R, 3L, 3R, 4 and 7 are transferred to the transport paths 21L, 21R, 22L, 22R, 23L, 23R, 24, 25 and then supplied in a predetermined manner.

  In the left and right side inner comple stations 1L and 1R, an operation of assembling the left and right side inner compuls 11L and 11R which are the inner side surfaces of the vehicle body is performed. That is, when the left and right side inner components 11L and 11R are inserted into the stations 1L and 1R and set in a jig, a welding robot or the like performs spot welding or the like to join the components. , Each side inner compound 11L, 11R is formed. Then, the completed side inner compuls 11L and 11R are conveyed to the left and right side structure comple- tion stations 3L and 3R, or the body conform auto-marriage station 5 via the inner comple conveyance paths 21L and 21R.

  In addition, in the left and right side outer comple stations 2L and 2R, an operation of assembling the left and right side outer comples 12L and 12R, which are the outer side surfaces of the vehicle body, is performed. That is, when the left and right side outer compounds 12L and 12R are inserted and set on the jig, a welding robot or the like performs spot welding or the like to complete each side outer compound 12L and 12R. Then, the completed side outer compuls 12L and 12R are conveyed to the side structure comple- tion stations 3L and 3R or the body-conformation automatic station 5 via the outer compulent conveying paths 22L and 22R.

  Also, the left and right side structure compound stations 3L and 3R join the side inner compounds 11L and 11R and the side outer compounds 12L and 12R to connect the left and right side structure compounds 13L and 13R which are the side surfaces of the vehicle body. Complete. That is, the side inner compound 11L, 11R conveyed from the left and right side inner compound stations 1L, 1R and the side outer compound 12L, 12R conveyed from the side outer compound station 2L, 2R are cured. The left and right side structure composites 13L and 13R are completed by setting them on a tool and joining the two by spot welding or the like using a welding robot or the like. Then, each completed side structure compound 13L, 13R is transported to the body-confirmation marriage station 5 via the side structure compound transport paths 23L, 23R.

  In addition, the floor loading station 4 has a jig for holding and positioning the parts such as the front floor, the rear floor, and the front complex that constitute the oil lower surface of the vehicle body, and these components are held and positioned by the jig. Then, in this state, they are joined and assembled by spot welding or the like using a welding robot or the like to form a floor complex 14 that is the lower surface of the floor of the vehicle body. Then, the floor compound 14 is conveyed to the body-conveying marriage station 5 through the floor compound conveying path 24.

  The bodycon automating station 5 positions and holds the underfloor jig for supporting and positioning the transported floor complex 14 and the assembled side structure composites 13L and 13R or the side inner compounds 11L and 11R with respect to the floor complex 14. An assembly jig, and a roof brace jig that positions and holds the roof brace 19 installed on the upper surfaces of the side structure composites 13L and 13R or the side inner composites 11L and 11R that are positioned and held. Yes.

  Then, these structural members are held, positioned, and joined by spot welding or the like using a welding robot or the like, and a side structure complex bodycon (hereinafter referred to as “normal skeleton vehicle body”) 15A that becomes a three-dimensional skeleton of the vehicle body. Alternatively, the side inner complex bodycon 15B is assembled. The assembled normal skeleton body 15A or side inner complex body body 15B has an opening between the roof braces 19 on the upper surface, so that it is possible to face the joining robot and jigs from above.

  This bodycon automating station 5 selectively produces a normal skeleton body 15A and a side inner complex bodycon 15B.

  In the case of manufacturing the normal skeleton body 15A, the floor complex 14 introduced from the floor entry station 4 via the floor complex conveyance path 24 and the left and right side structure complex stations 3L, 3R are conveyed via the side structure complex conveyance paths 23L, 23R. The side structure composites 13L and 13R thus formed are set on a jig, and the two are joined by a welding robot or the like by spot welding or the like.

  Next, a roof brace 19 is set via jigs between the upper parts of both side structure composites 13L and 13R, and a welding robot or the like performs spot welding or the like between them to join the normal skeleton body 15A. Finalize. Then, the normal skeleton body 15A is transferred to the roof post-mounting station 8 through the outer station 6.

  On the other hand, when manufacturing the side inner compound body compact 15B, first, the floor compound 14 introduced from the floor loading station 4 via the floor compound conveying path 24, and the left and right side inner comple stations 1L, 1R to the inner compound conveying paths 21L, 21R. The side inner compels 11L and 11R that have been conveyed through the above are set on a jig, and the two are joined by a welding robot or the like by spot welding or the like. Next, a roof brace 19 is set between the upper parts of the side inner composites 11L and 11R via a jig, and a welding robot or the like is also spot welded between the two to join the side inner compound body body 15B. To complete. Then, the side inner complex body body 15 </ b> B is transferred to the outer station 6.

  The outer station 6 is transported from the left and right side outer comple stations 2L and 2R through the outer compulsate transport paths 22L and 22R, and the side inner complex body con 15B assembled into a three-dimensional skeleton and frozen in shape at the bodycon automatic station 5. A jig for holding and positioning the left and right side outer complies 12L and 12R has been provided.

  Then, the parts that are positioned and held are joined together by spot welding or the like with a welding robot or the like. At that time, if necessary, an additional joining process of a three-dimensional skeleton is performed to complete a side outer compound bodycon (hereinafter referred to as “endoskeleton vehicle body”) 16, which is then transferred to the roof rear loading station 8.

  The roof after-loading station 8 is a common final station (final process) for manufacturing a vehicle body 18 including the normal skeleton vehicle body 15A or the internal skeleton vehicle body 16. That is, the roof post-mounting station 8 is a jig for positioning and holding the transported normal skeleton body 15A or the inner skeleton body 16 and the roof 17 transported from the roof loading station 7 via the roof transport path 25. These are joined by performing spot welding or the like with a welding robot or the like to complete a vehicle body 18 having a normal skeleton structure or an inner skeleton structure.

  Next, a production method of the vehicle body 18 having the normal skeleton structure or the inner skeleton structure will be described using the production line having such a configuration.

  The production line for producing the vehicle body 18 having a normal skeleton structure is as shown in FIG. That is, the side inner compound stations 11L and 11R assembled at the left and right side inner compound stations 11L and 11R, and the left and right side outer compound stations 2L. The side outer compuls 12L, 12R assembled in 2R passes through the inner compulent conveying paths 21L, 21R and the outer compulent conveying paths 22L, 22R, and passes through branch points 26L, 26R, 27L, 27R to the left and right side structure complex stations. It is conveyed to 3L and 3R.

  In the left and right side structure compound stations 3L and 3R, the side inner compounds 11L and 11R and the side outer compounds 12L and 12R are set on a jig and joined together by spot welding or the like. Side structure compounds 13L and 13R are formed. Then, the side structure composites 13L and 13R are transported to the body control auto-marrying station 5 through the side structure complex transport paths 23L and 23R.

  The floor control 14 is transported from the floor loading station 4 via the floor-complet transport path 24 to the body-conveying station 5, and the left and right side structure compounds 13L and 13R assembled by the side structure contract stations 3L and 3R are provided. It is conveyed via the side structure compound conveying paths 23L and 23R. Then, the floor compound 14 and the left and right side structure compounds 13L and 13R are set on a jig and joined by spot welding or the like. Further, the roof brace 19 is set between the upper parts of the side inner complies 11L and 11R via a jig and joined by spot welding or the like, thereby completing the normal skeleton body 15A. Since the roof 17 is not yet assembled to the normal skeleton body 15A, the arm of the welding robot can be exposed to the inside through the opening between the roof braces 19 from above, and the additional striking can be easily performed. Can do.

  The completed normal skeleton body 15A passes along the main line, passes through the outer station 6, and is transferred to the roof rear mounting station 8. The roof post-mounting station 8 is a final station (final process) for producing the vehicle body 18, and the normal skeleton vehicle body 15A and the roof 17 conveyed from the roof loading station 7 via the roof conveyance path 25 are set in a jig. Then, they are joined by spot welding or the like to complete the vehicle body 18 having a normal skeleton structure.

  Next, the flow in the case of producing the car body 18 having the endoskeleton structure will be described. The production line for manufacturing the vehicle body 18 having the inner skeleton structure is as shown in FIG.

  That is, the side inner compuls 11L, 11R assembled at the left and right side inner compuls stations 11L, 11R and the floor compulsory 14 of the floor loading station 4 pass through the inner compulsate transport paths 21L, 21R and the floor comple transport path 24. It is transported to the body contour automatic station 5. These are set on a jig and joined by welding such as spot welding. Further, a roof brace 19 is set between the upper parts of both side inner complies 11L and 11R via a jig and joined by spot welding or the like to form a side inner comple body body 15B. Since the roof 17 is not yet assembled to the side inner complex body body 15B, the arm of the welding robot can be faced to the inside through the space between the roof braces 19 from above, and the number of shots can be increased easily. be able to. This side inner complex body body 15B is transferred to the outer station 6 along the main line.

  The outer station 6 includes left and right side outer compound stations 2L. The side outer compounds 12L and 12R assembled by 2R are conveyed through the outer compound conveying paths 22L and 22R. Then, the side outer compuls 12L and 12R and the side inner comple body con 15B transferred from the body control automatic station 5 are set in a jig and joined by welding such as spot welding, so that the endoskeleton body 16 is Completed.

  The completed endoskeleton body 16 is transferred along the main line to the roof rear loading station 8. The roof rear loading station 8 is a common final station (final process) for producing the vehicle body 18, and the endoskeleton body 16 and the roof 17 conveyed from the roof loading station 7 via the roof conveyance path 25 are used as jigs. They are set and joined by spot welding or the like to complete the body frame 18 having an endoskeleton structure.

  As described above, in the present embodiment, the body skeleton automatic station 5 is formed with the normal skeleton body 15A and the side inner complex body body 15B to which the roof 17 has not yet been assembled. The skeleton station is not required, and the floor loading station 4 can be directly connected to the body-conveying station 5 via the floor-complet conveying path 24. As a result, a conveyance path that bypasses the endoskeleton station is not required, and even when the normal skeleton body 15A and the endoskeleton body 16 are mixed and assembled, productivity can be improved and the equipment cost can be reduced. Reduction can be achieved.

  Further, the roof after-loading station 8 is a common final station for manufacturing the vehicle body 18 which is usually the skeleton vehicle body 15AA or the internal skeleton vehicle body 16, and the roof 17 is assembled in this final station. 5 or the like, in the pre-process until reaching the roof after-loading station 8, the roof 17 has not been assembled yet, and the arm of the welding robot is moved from above with respect to the normal skeleton body 15A and the side inner complex body body 15B. It becomes easy to increase the number of hits, and the degree of freedom in design can be increased. Further, since the roof 17 is welded to the normal skeleton body 15A and the inner skeleton body 16 at the roof post-loading station 8, the jig can be shared, and the equipment cost can be reduced. Further reduction can be achieved.

  The present invention is not limited to the above-described embodiment. For example, when assembling the vehicle body 18 having an endoskeleton structure, the side outer computs 12L and 12R are connected to the body inner auto station 5B with respect to the side inner comple bodycon 15B. As a result, the outer station 6 may be omitted.

1L, 1R ... left and right side inner comple station,
2L, 2R ... left and right side outer comple station,
3L, 3R ... left and right side structure complex station,
4 ... Floor loading station,
5 ... Bodycon Automating Station,
8 ... Roof rear loading station,
11L, 11R ... left and right side inner comple,
12L, 12R ... left and right side outer compound,
13L, 13R ... left and right side structure complex,
14 ... Floorcomple,
15A: Normal skeleton body,
15B ... Side inner complex bodycon,
16 ... Endoskeleton body,
18 ... the car body,
21L, 21R ... Inner-comple conveyance path,
22L, 22R ... outercomple conveyance path,
25. Roof transport path,
26L, 26R, 27L, 27R ... Branch point

Claims (6)

In a production method for a vehicle body in which a normal skeleton vehicle body and an internal skeleton vehicle body are mixed in one production line,
A first step of joining the left and right side inner comple and the left and right side outer comple to form the left and right side structure comple respectively;
After the first step, a second step of forming a normal skeleton vehicle body by assembling the left and right side structure composites to a floor complex;
A first 'step of assembling the left and right side inner comple to the floor comple to form a side inner comple bodycon;
After the first 1 step, the second inner step of forming an endoskeleton vehicle body by assembling the left and right side outer comple to the side inner complex body body,
A method for producing a vehicle body, wherein the second step of forming the normal skeleton vehicle body and the first 1 'step of forming the side inner compound bodycon are performed at a common assembly station. The vehicle body production according to claim 1, further comprising a third step of assembling a roof to the normal skeleton vehicle body formed in the second step and the endoskeleton vehicle body formed in the 2 'step. Method. 3. The vehicle body production method according to claim 2, wherein the third step is a final step of manufacturing a vehicle body including the normal skeleton vehicle body or the endoskeleton vehicle body. In a production facility for vehicle bodies that produce a mix of normal and internal skeleton bodies in one production line,
A first station that joins the left and right side inner comple and the left and right side outer comple respectively to form a left and right side structure comp;
A second station for assembling a normal skeletal vehicle body by assembling the left and right side structure complex to a floor complex;
A first 'station for assembling the left and right side inner comple to the floor comple to form a side inner comple bodycon;
A second 'station that forms an endoskeleton body by assembling the left and right side outer comples to the side inner complex bodycon,
The vehicle body production facility characterized in that the second station forming the normal skeleton vehicle body and the first station forming the side inner complex bodycon are common. 5. The vehicle body production facility according to claim 4, further comprising a common third station for attaching a roof to the normal skeleton vehicle body and the endoskeleton vehicle body. 6. The vehicle body production facility according to claim 5, wherein the third station is a final station for manufacturing a vehicle body including the normal skeleton vehicle body or the endoskeleton vehicle body.

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