JP3784459B2 - Car sheet transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile sheet conveying apparatus for conveying a plurality of types of automobile sheets from a sheet supply station to a sheet assembling station.
[0002]
[Prior art]
Conventionally, when a plurality of types of automobile seats are conveyed from a sheet supply station to a plurality of sheet assembling stations provided in an automobile assembly line, a front seat and a rear seat for one automobile are placed on one pallet. While passing the pallet through the rear sheet assembling station and the front sheet assembling station on one sheet conveying line, the front sheet was conveyed to the front sheet assembling station and the rear sheet was conveyed to the rear sheet assembling station.
[0003]
[Problems to be solved by the invention]
By the way, from the viewpoint of simplifying the sheet conveyance line and reducing the equipment cost, the conventional sheet conveying apparatus for automobiles is arranged so that the front seat and the rear seat for one automobile are placed on one pallet and conveyed. However, if the assembly target is a three-row seat type automobile with a middle seat in addition to the front seat and rear seat, the front seat, rear seat and middle seat are placed on one pallet and transported. Since it is difficult to do so, there is a problem that the work efficiency is greatly lowered in the existing sheet conveying line.
[0004]
The present invention has been made in view of the above-described circumstances, and can effectively convey a sheet to a plurality of types of vehicles having different numbers of sheets and different types of sheets without significantly changing an existing sheet conveyance line. It aims to be able to do it.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, the invention described in claim 1 is a sheet supply station in which at least a front seat and a separate rear seat that can be divided into a back portion and a seat portion are placed on one pallet. Equipped with a main transfer line for transferring from the rear seat assembly station to the front seat assembly statione,Aside from the rear seat assembly station and the front seat assembly station, an auxiliary assembly station is provided in the automobile assembly line, and a sub-transport line is provided so as to pass through the auxiliary assembly station. A pallet on which a single sheet is placed is conveyed to the auxiliary assembly station by the sub-conveying line.Configured asCar sheet transport deviceInA first sub-transport line that transports a pallet on which a sheet other than a front sheet is placed from a sheet supply station via an auxiliary assembly station;A carriage that transports empty pallets in a stacked state;A pallet transfer device for transferring empty pallets in a stacked state to a carriage positioned by a carriage positioning device provided at the downstream end of the first auxiliary transfer line, and a second auxiliary transfer on which the carriage loaded with empty pallets travels And a third sub-conveying line that receives an empty pallet mounted on the carriage at the downstream end of the second sub-conveying line and conveys it to the sheet supply station.The cart has a free roller conveyor on which an empty pallet is placed, a fixed stopper provided on three sides so as to surround the free roller conveyor, and a stopper operating mechanism provided on one side that can stand and fall. And a pair of photoelectric tube sensors arranged at the upstream end of the third sub-transport line, and a conveyor laid on the third sub-transport line is configured to be driven by light shielding of the photoelectric tube sensor.It is characterized by that.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0008]
FIGS. 1 to 17 show an embodiment of the present invention. FIG. 1 is a first partial view of an automotive sheet conveying apparatus, FIG. 2 is a second partial view of an automotive sheet conveying apparatus, and FIG. FIG. 4 is a four-direction arrow view of FIG. 3, FIG. 5 is a five-direction arrow view of FIG. 3, FIG. 6 is a sectional view taken along line 6-6 of FIG. 6 is a cross-sectional view taken along line 7-7 in FIG. 6, FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 6, FIG. 9 is a view taken in the direction of arrow 9 in FIG. FIG. 12 is a sectional view taken along line 12-12 of FIG. 10, FIG. 13 is a sectional view taken along line 13-13 of FIG. 12, FIG. 14 is a sectional view taken along line 14-14 of FIG. 14 is a sectional view taken along the line 15-15 in FIG. 14, FIG. 16 is a view in the direction of arrow 16 in FIG. 1, and FIG. 17 is a view in the direction of arrow 17 in FIG.
[0009]
First, the schematic structure of the automobile sheet conveying apparatus will be described with reference to FIGS. 1 and 2. 1 and 2 are integrated by abutting the AA line of FIG. 1 with the AA line of FIG.
[0010]
The automobile assembly line La includes left and right front seats in addition to left and right front seats FR and an N-type vehicle n which is a general small passenger car having a separate rear seat SR that can be separated into a back portion and a seat portion. An A-type vehicle a having an FR and left and right rear seats RR, and a B-type vehicle b having a left and right front seat FR, left and right middle seats MI, and a separate rear seat SR that can be separated into a back portion and a seat portion. Mix and flow. The automobile sheet conveying apparatus that conveys a sheet to an N type vehicle n, an A type vehicle a, and a B type vehicle b includes a main conveying line Lm and a sub conveying line Ls, and the sub conveying line Ls further includes First sub-transport line Ls₁And the second sub-transport line Ls₂And the third sub-transport line Ls_ThreeIncluding.
[0011]
The main conveyance line Lm is the sheet supply station S.₀Truck T parked on the platform₁Packing box N₁The first pallet P on which a package consisting only of the front seat FR taken out from the package or a package consisting of the front seat FR and the separate rear seat SR is placed₁, Separate rear seat assembly station S₁And front seat assembly station S₂The first pallet P that has been transported via₁Sheet supply station S in stacked state₀It is something to return to.
[0012]
First sub-transport line Ls₁Is a truck T parked on the platform₂Packing box N₂The second pallet P on which a package consisting only of the rear seat RR taken out from the package or a package consisting only of the middle sheet MI is placed₂, Rear seat / middle seat assembly station S_ThreeVia the second sub-transport line Ls₂The second pallet P is transported to the upstream end of₂Are stacked on the carriage D.
[0013]
Second sub-transport line Ls₂Is the empty second palette P₂Is mounted on the third sub-transport line Ls_ThreeAnd the third sub-transport line Ls_ThreeIs the empty second pallet P received from the carriage D₂Sheet supply station S₀To be transported.
[0014]
Next, the structure of the main transport line Lm will be described in detail.
[0015]
As shown in FIGS. 1 and 2, an upper stage connecting part 1 that can swing up and down and a fixed lower stage connecting part 2 are provided at the upstream end of the main transport line Lm so as to overlap vertically. Track T formed in two steps, upper and lower, when lying down horizontally₁Packing box N₁First pallet P from the top₁Can be carried out, and the packing box N can be₂First pallet P from the bottom₁Can be carried out. The upper connection part 1 and the lower connection part 2 are connected by a lift table 3, and the lift table 3 allows the first pallet P to be conveyed from the lower connection part 2 to the conveyor 4 that is continuous with the upper connection part 1.₁Can be transferred.
[0016]
At the downstream end of the conveyor 4 is a first pallet P on the conveyor 4.₁Is provided on the conveyor 5, and a first pallet P on the conveyor 5 is provided at the downstream end of the conveyor 5.₁Is provided on the conveyor 7. By disposing the conveyor 5 at a position higher than the conveyor 4 and the conveyor 7, the first sub-transport line Ls is disposed below the conveyor 5.₁A part of can be arranged. At the downstream end of the conveyor 7 is the first pallet P on the conveyor 7.₁The separate rear seat assembly station S provided at the upstream end of the conveyor 9₁An elevating table 10 is provided for transfer. Separate rear seat assembly station S₁Is provided with a turntable buffer 20 for temporarily storing the conveyed Pareto type rear seat SR.
[0017]
A first pallet P on the conveyor 9 is disposed at the downstream end of the conveyor 9.₁Is provided on the conveyor 11, and a first pallet P on the conveyor 11 is disposed at the downstream end of the conveyor 11.₁Is provided on the conveyor 13. The downstream end of the conveyor 15 connected to the conveyor 13 is connected to a conveyor 17 via a lifting turntable 16, and the conveyor 18 connected to the conveyor 17 is a pallet stacking station S near the upstream end of the conveyor 4._FourHas reached. Pallet stacking station S_FourFirst pallet P stacked in₁After being discharged to the conveyor 19, it is transferred from the downstream end of the conveyor 19 to the lower connecting portion 2 by an operator.
[0018]
Next, the first sub-transport line Ls₁The schematic structure will be described in detail.
[0019]
As shown in FIGS. 1 and 2, the first sub-transport line Ls₁An upper connecting portion 21 that can swing up and down and a fixed lower connecting portion 22 are provided so as to overlap vertically, and a track formed in two upper and lower steps when the upper connecting portion 21 is lowered in a horizontal state. T₂Packing box N₂From the top to the second pallet P₂And can be carried out by the lower connecting portion 22₂2nd pallet P from the bottom₂Can be carried out. The upper connection part 21 and the lower connection part 22 are connected by a lift table 23, and the lift table 23 allows the second pallet P to be conveyed from the lower connection part 22 to the conveyor 24 that is continuous with the upper connection part 21.₂Can be transferred.
[0020]
A second pallet P on the conveyor 24 is disposed at the downstream end of the conveyor 24 extending in parallel with the conveyors 4 and 5 of the main transport line Lm.₂Is provided on the conveyor 25. The conveyor 25 crosses the lower side of the conveyor 5 of the main conveying line Lm in a right angle direction, and the rear sheet / middle sheet assembling station S is formed at the crossing position._ThreeIs provided. Rear seat / middle seat assembly station S_ThreeThe second pallet P is emptied by discharging the rear seat RR or the middle seat MI at₂Are stacked on the carriage D at the downstream end of the conveyor 25.
[0021]
Next, based on FIGS. 3 and 4, the first sub-transport line Ls₁The structure of the conveyor 25 will be described.
[0022]
A drive shaft 32 is rotatably supported at the end of the machine frame 31 of the conveyor 25. A pair of left and right circulation sprockets 33, 33 provided on the drive shaft 32 are connected to the second pallet P.₂A pair of left and right endless chains 34 with rollers is carried around the belt. An endless chain 38 is wound around a driven sprocket 35 provided at one end of the drive shaft 32 and a drive sprocket 37 provided at the motor 36. Therefore, when the motor 36 is driven, the drive sprocket 37, the endless chain 38, and the driven sprocket 35 are driven. The chain 34 with rollers 34 circulates through the drive shaft 32 and the sprockets 33 for circulation, and the second pallet P₂Is transported.
[0023]
Next, the first sub-transport line Ls based on FIGS.₁The structure of the pallet transfer device 41 will be described.
[0024]
The pallet transfer device 41 is a second pallet P on the conveyor 25.₂Is mounted on a carriage D, and includes a machine frame 42 extending in the same direction as the conveyor 25 and supported by being suspended from the ceiling. A frame body 44 suspended and supported by a pair of guide rails 43, 43 laid on the left and right sides of the machine frame 42 includes a plurality of support rollers 45 that roll on the upper surfaces of the guide rails 43, 43, and the guide rail 43. , 43, and a plurality of guide rollers 46 that roll on the side surfaces of the output rod 47.₁It is connected to and can reciprocate.
[0025]
The lift substrate 50 is supported by a pair of slide guides 48 provided on the frame body 44 through slide rods 49 so as to be movable up and down. Suspension sprockets 52 and 52 are provided on a rotating shaft 51 supported by the frame body 44, and the other ends of the suspension chains 53 and 53 having one ends bonded to the suspension sprockets 52 and 52 are raised and lowered. Bonded to the substrate 50. A drive sprocket 55 provided on the motor 54 supported by the frame 44 and a driven sprocket 56 provided on the rotary shaft 51 are connected by an endless chain 57, and the motor 54 is driven to rotate the rotary shaft 51 forward and backward. Thus, the elevating substrate 50 can be raised and lowered. 6, reference numerals 58a, 58b, and 58c denote dogs 59 and 49 provided at the upper ends of the slide rods 49 and 49, respectively, for detecting the height of the elevating board 50 and stopping the elevating board 50 at a predetermined position. 59 is a limit switch operated by 59.
[0026]
A pair of gripping arms 62 and 62 are supported by four guide rails 60 provided on the lower surface of the elevating substrate 50 through slide members 61 so as to be freely opened and closed. Both grip arms 62, 62 are opened and closed by a cylinder 63 provided on the elevating board 50, and a second pallet P is formed by a flange formed at the lower end thereof.₂Can be gripped. Reference numeral 64 in FIG. 6 denotes a pressing member that is supported by the lower surface of the elevating substrate 50 so as to be movable up and down and is biased downward by a spring 65, and is held by the holding arms 62 and 62.₂The second pallet P is elastically contacted with the upper surface of the second pallet P in cooperation with the gripping arms 62, 62.₂Is securely gripped.
[0027]
Next, based on FIGS. 9 to 13, the second sub-transport line Ls₂The structure of the carriage D that moves the vehicle will be described.
[0028]
The carriage D has a rectangular frame 72 supported on the floor surface by four casters 71, a pusher 73 that is erected on the rear end of the frame 72 and pushed by an operator when moving the carriage D, and a frame 72 And two rows of free roller conveyors 74 and 74 laid in the left-right direction on the upper surface of the upper and lower sides. Second pallet P placed on free roller conveyors 74, 74₂, Two front stoppers 75, 75, two rear stoppers 76, 76, two left side stoppers 77, 77, and one piece so as to surround the free roller conveyors 74, 74. The right side stopper 78 is provided. Second pallet P placed on free roller conveyors 74, 74₂The right side stopper 78 can be manually raised and lowered by a stopper operating mechanism 79.
[0029]
That is, the right side stopper 78 is fixed to the front end of the pivot 80 extending rearward along the right side surface of the frame 72, and the link 83 is connected to the tip of the arm 81 fixed to the rear end of the pivot 80 via the pin 82. The lower end is pivoted. Legs 86 branched from the pair of brackets 84, 84 of the support member 94 provided on the carriage D to the fork of the operation lever 86 via pins 85, 85.₁, 86₁The lower end of is pivoted. Leg 86 of operation lever 86₁, 86₁The other ends of the links 88 and 88 pivoted at one end via pins 87 and 87 are pivotally supported at the intermediate portion of the link 90 via a pin 89. One end of the link 90 is pivotally supported by the pair of brackets 84 and 84 via a pin 91, and the other end is pivotally supported by an upper end of the link 83 via a pin 92.
[0030]
Thus, when the operation lever 86 is in the solid line position of FIG. 12 and the right side stopper 78 is raised, when the operation lever 86 is tilted around the pins 85 and 85 in the direction of arrow a, it is pulled by the links 88 and 88. The link 90 rises 90 ° clockwise from the horizontal position, and the link 83 pulled by the link 90 is pulled up in the direction of arrow b. As a result, the pivot 80 is rotated via the arm 81, and the right side stopper 78 fixed to the pivot 80 is inclined 90 ° in the direction of the arrow c from the solid line position to the chain line position. Conversely, by operating the operating lever 86 from the chain line position in FIG. 12 to the solid line position, the right side stopper 78 rises 90 ° from the chain line position to the solid line position. Reference numeral 93 denotes a limit switch for confirming the fall of the right side stopper 78, and confirms that the right side stopper 78 is in the fallen state when the carriage D is positioned on the first carriage positioning device 101 described later. To do.
[0031]
Next, based on FIG.14 and FIG.15, the structure of the 1st trolley | bogie positioning apparatus 101 which positions and locks the trolley | bogie D in the predetermined position below the pallet transfer apparatus 41 is demonstrated.
[0032]
The first carriage positioning device 101 includes a pair of left and right guide rails 103 and 103 for guiding a pair of front and rear guide rollers 102 and 102 (see FIGS. 10 and 11) provided on the lower surface of the front portion of the carriage D. The entrance end portions of the guide rails 103 and 103 are expanded 103 that expands left and right.₁, 103₁The guide rollers 102 can be smoothly guided.
[0033]
A fixed stopper 104 and a movable stopper 105 for locking the front guide roller 102 are provided between the left and right guide rails 103. The movable stopper 105 is pivotally supported by a pin 106, and the output rod 107 of the cylinder 107.₁The front guide roller 102 is sandwiched between the fixed stopper 104 and fixed. One guide rail 103 is provided with two limit switches 108 and 108 for detecting the presence of a carriage, which are operated in contact with the two guide rollers 102 and 102 of the carriage D, respectively.
[0034]
As shown in FIGS. 1 and 2, the second sub-transport line Ls₂Is the empty second palette P₂It is comprised from the path | route which an operator pushes and moves the cart D stacked, and it is extended from the said 1st cart positioning device 101 to the 2nd cart positioning device 125 mentioned later.
[0035]
Next, based on FIGS. 16 and 17, the third sub-transport line Ls_ThreeThe structure of will be described.
[0036]
The first sub-transport line Ls₁And the first auxiliary transport line Ls.₁The conveyor 111 provided below the upstream end of the conveyor 24 has a drive shaft 113 and driven shafts 114, 114 rotatably supported at both ends of the machine casing 112, and a pair of left and right provided on the drive shaft 113. Circulation rockets 115, 115 and a pair of left and right circulation sprockets 116, 116 provided on the driven shafts 114, 114, the second pallet P₂A pair of left and right endless chains with rollers 117, 117 for carrying and transporting the belt is wound around. An endless chain 121 is wound around a driven sprocket 118 provided at one end of the drive shaft 113 and a drive sprocket 120 provided in the motor 119. When the motor 119 is driven, the drive sprocket 120, the endless chain 121 and the driven sprocket 118 are passed through. As the drive shaft 113 rotates, the chain 117, 117 with rollers circulates and the second pallet P₂Is transported.
[0037]
A pair of left and right photoelectric tube sensors 122, 122 are provided at the upstream end of the conveyor 111, and the second pallet P discharged from the carriage D positioned by the second carriage positioning device 125 described later.₂When the light passes between the photoelectric tube sensors 122 and 122 and is shielded from light, the motor 119 rotates and the conveyor 111 is driven.
[0038]
The first pallet P is transferred from the carriage D positioned by the second carriage positioning device 125 to the conveyor 111.₂A pair of auxiliary rollers 123, 123 are provided at the upstream end of the conveyor 111. The second pallet P conveyed on the conveyor 111₂A pair of left and right guide members 124, 124 are provided on the machine casing 112 to guide both sides of the machine.
[0039]
The second carriage positioning device 125 provided on the upstream side of the conveyor 111 includes a pair of left and right guide rails 126 and 126 for guiding a pair of front and rear guide rollers 102 and 102 provided on the lower surface of the front portion of the carriage D. The entrance end portions of the guide rails 126 and 126 expand to the left and right.₁126₁The guide rollers 102 can be smoothly guided. A pair of left and right stoppers 127, 127 are provided to position the tip of the carriage D guided by the guide rollers 126, 126 on the guide rails 126, 126.
[0040]
Next, the operation of the embodiment of the present invention having the above-described configuration will be described.
[0041]
When the left and right front seats FR and a separate rear seat SR that can be separated into a back portion and a seat portion are assembled to an N type vehicle n that is a general small ordinary passenger car, the main transport line Lm is used. That is, the sheet supply station S₀Truck T stopped at₁Packing box N₁To the first pallet P on which the left and right front seats FR and a separate rear seat SR that can be separated into the back and the seat are placed.₁The separation-type rear seat assembling station S through the conveyor 4, the lifting table 6, the conveyor 5, the lifting table 8, the conveyor 7, and the lifting table 10₁Transport to. Separate rear seat assembly station S₁In the first pallet P₁Then, the separate rear seat SR is taken out and stored in the buffer 20, and the separate rear seat SR stored in the buffer 20 is assembled to the N-type vehicle n flowing in the assembly line La.
[0042]
A first pallet P on which only the front seat FR is placed after the separation-type rear seat SR is taken out₁Is a separate rear seat assembly station S₁To the front sheet assembly station S by the conveyor 9, the lifting table 12, the conveyor 11, the turntable 14 and the conveyor 13.₂It is conveyed to. And front seat assembly station S₂Robots R and R are in the first pallet P₁The front seat FR is taken out from the vehicle and assembled to the N-type vehicle n flowing through the automobile assembly line La.
[0043]
Empty first pallet P₁Is a pallet stacking station S from a conveyor 13, a conveyor 15, a lift turntable 16, a conveyor 17 and a conveyor 18._FourIt is transported and stacked. Pallet stacking station S_FourFirst pallet P stacked in₁Is transported by a conveyor 19 and transferred to the lower connecting portion 2 by an operator to be track T₁Packing box N₁Mounted on.
[0044]
When the left and right front seats FR and the left and right rear seats RR are assembled to the A type vehicle a, the main transport line Lm and the sub transport line Ls are used in combination. That is, the sheet supply station S₀Truck T stopped at₁Packing box N₁To the first pallet P on which the left and right front seats FR are mounted.₁Is taken out and the front sheet assembling station S is moved by the main conveying line Lm.₂Then, the robots R and R are assembled to the A type vehicle a flowing on the automobile assembly line La. And the first pallet P is empty₁Is the track T₁Packing box N₁Returned to
[0045]
On the other hand, the second pallet P on which the left and right rear seats RR are placed₂Is the sheet supply station S₀Truck T stopped at₂Packing box N₂From the first sub-transport line Ls₁The rear seat / middle seat assembling station S by the conveyor 24, the lifting table 26 and the conveyor 25._ThreeIt is conveyed to. Rear seat / middle seat assembly station S_ThreeIn the second pallet P₂The rear seat RR is taken out from the vehicle and assembled to the A type vehicle a flowing in the automobile assembly line La.
[0046]
When the left and right front seats FR, the left and right middle seats MI, and the separate rear seat SR that can be separated into the back portion and the seat portion are assembled to the B-type vehicle b, the front seat FR and the separate rear seat SR are mounted. Placed first pallet P₁Separate type rear seat assembly station S₁Assemble the separate rear seat SR with the front seat assembly station S₂After assembling the front seat FR, empty first pallet P₁Sheet supply station S₀Return to
[0047]
On the other hand, the second pallet P on which the left and right middle sheets MI are placed₂Is the sheet supply station S₀Truck T stopped at₂Packing box N₂Rear seat / middle seat assembly station S_ThreeThe middle sheet MI is assembled by the worker to the B type vehicle b flowing on the assembly line La.
[0048]
The rear seat / middle seat assembly station S is used for both the A type vehicle a and the B type vehicle b described above._ThreeThe second pallet P which is emptied after the rear seat RR or the middle seat MI is taken out₂Through the same path described below, the sheet supply station S₀Will be returned.
[0049]
Hereinafter, the second pallet P which has been emptied₂The return route will be described. The empty carriage D is positioned at the downstream end of the conveyor 25 by the first carriage positioning device 101, and the empty second pallet P₂Is transferred from the downstream end of the conveyor 25 onto the carriage D by the pallet transfer device 41. The pallet transfer device 41 that has stopped the frame body 44 above the conveyor 25 drives the motor 54 to lower the elevating substrate 50 and then drives the cylinder 63 to move the pair of gripping arms 62 and 62 closer together. The second pallet P on the conveyor 25₂Grip. The gripping arms 62, 62 are the second pallet P₂The second pallet P gripped by driving the motor 54 again.₂At the same time, the elevating board 50 is raised, and then the cylinder 47 is driven to move the frame body 44 above the carriage D. Then, after driving the motor 54 to lower the frame body 44, the cylinder 63 is driven to open the gripping arms 62, 62, thereby holding the gripped second pallet P.₂Is transferred onto the carriage D. By repeating the above operation, a predetermined number of second pallets P are obtained.₂Can be stacked on the carriage D.
[0050]
Thus, the predetermined number of second pallets P₂The cart D stacked in the second sub-transport line Ls₂The third sub-transport line Ls is moved by being pushed by the worker._ThreeIs positioned by a second carriage positioning device 125 provided at the upstream end of the vehicle. Subsequently, the operator operates the operation lever 86 of the carriage D to cause the right side stopper 78 to fall down in a horizontal posture, and stack the second pallet P.₂Is pressed toward the conveyor 111. At that time, the photoelectric tube sensors 122 and 122 are connected to the second pallet P.₂Is detected, the conveyor 111 is driven and the second pallet P₂Is automatically discharged from the carriage D and passes through the lifting table 23 to the truck T₂Packing box N₂It is conveyed toward.
[0051]
As explained above, the rear seat assembly station S₁And front seat assembly station S₂In addition to the rear seat / middle seat assembly station S_ThreeSheet supply station S₀To the rear seat / middle seat assembly station S_ThreeSecond pallet P on which rear seat RR or middle seat MI is placed₂The first sub-transport line Ls₁The second pallet P is emptied after being transported by₂The second sub-transport line Ls₂And the third sub-transport line Ls_ThreeThrough the sheet supply station S₀In addition to the left and right front seats FR and the N type vehicle n that is a general small ordinary passenger car, the A type vehicle a having the left and right front seats FR and the left and right rear seats RR, Even when a B-type vehicle b having a front seat FR, a left and right middle seat MI, and a separate rear seat SR that can be separated into a back portion and a seat portion is mixed and produced, efficient production is performed. be able to. In addition, since it can be implemented by adding the sub-transport line Ls with little modification to the existing main transport line Lm, the equipment cost can be reduced.
[0052]
In addition, the sub transport line Ls is the second sub transport line Ls.₂Empty second pallet P₂Are stacked on the carriage D and conveyed, so that the equipment cost of the auxiliary conveyance line Ls can be suppressed. Therefore, even if the number of A-type vehicles A and B-type vehicles b that use the auxiliary transport line Ls is small, the economic burden can be reduced.
[0053]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0054]
【The invention's effect】
  As described above, according to the first aspect of the present invention, the auxiliary assembly station is provided separately from the rear seat assembly station and the front seat assembly station in the automobile assembly line, and passes through the auxiliary assembly station. In this way, a pallet on which a sheet other than the front seat and the separate rear seat is placed is transported to the auxiliary assembly station by the sub transport line, so it is separated into the left and right front seats, the back and the seat. Vehicles other than general small passenger cars having a separate rear seat that can be used (for example, vehicles having left and right front seats and left and right rear seats, left and right front seats, left and right middle seats, a back and a seat) Production of vehicles with separable separate rear seats) Even if it is possible to perform efficient production without reducing the production efficiency. In addition, since it is only necessary to add the sub-transport line with almost no modification to the existing main transport line, the equipment cost does not increase.
  AlsoEfficiently transfer the pallet on which a sheet other than the front sheet is placed from the sheet supply station to the auxiliary assembly station, and return the empty pallet from which the sheet has been discharged to the sheet supply station. Can do. Moreover, since the equipment cost of the sub-transport line can be reduced by stacking and transporting empty pallets onto the carriage, there is an economic burden even if the number of models that use the sub-transport line is small. Less is enough.
  In addition, a stopper is provided on three sides so as to surround the free roller conveyor provided on the carriage, and a stopper that can be raised and lowered by the stopper operating mechanism is provided on one side, so that the stacked pallets can be stably attached to the carriage. In addition to being mounted, the conveyor laid in the third sub-transport line is driven by the light shielding of the photoelectric tube sensor provided at the upstream end thereof, so that the stacked pallets are transferred from the carriage to the conveyor laid in the third sub-transport line. Can be discharged automatically.
[Brief description of the drawings]
FIG. 1 is a first partial view of an automobile sheet conveying apparatus.
FIG. 2 is a second partial view of an automobile sheet conveying apparatus.
FIG. 3 is a three-direction enlarged view of FIG.
4 is a view in the direction of arrow 4 in FIG.
FIG. 5 is a view in the direction of arrow 5 in FIG.
6 is a cross-sectional view taken along line 6-6 of FIG.
7 is a cross-sectional view taken along line 7-7 in FIG.
8 is a cross-sectional view taken along line 8-8 in FIG.
9 is a view taken in the direction of arrow 9 in FIG.
10 is a view in the direction of arrow 10 in FIG. 9;
11 is a view taken in the direction of arrow 11 in FIG. 9;
12 is a sectional view taken along line 12-12 of FIG.
13 is a cross-sectional view taken along line 13-13 of FIG.
14 is a cross-sectional view taken along line 14-14 of FIG.
15 is a cross-sectional view taken along line 15-15 in FIG.
16 is a view in the direction of arrow 16 in FIG.
17 is a view in the direction of arrow 17 in FIG.
[Explanation of symbols]
La car assembly line
Lm main transport line
Ls Sub-transport line
Ls₁      First sub-transport line
Ls₂      Second sub-transport line
Ls_Three      Third sub-transport line
P₁        First pallet (pallet)
P₂        Second palette (pallet)
S₀        Sheet supply station
S₁        Rear seat assembly station
S₂        Front seat assembly station
S_Three        Auxiliary assembly station
FR Front seat
SR Separate type rear seat
MI middle seat (seat other than front seat)
RR Rear seat (seat other than front seat)
42 Pallet transfer equipment
74        Free roller conveyor
75        Stopper
76        Stopper
77        Stopper
78        Stopper
79        Stopper operation mechanism
101 First cart positioning device (cart positioning device)
111      Conveyor
122      Phototube sensor

Claims (1)

At least a front seat (FR) and a separate rear seat (SR) that can be divided into a back portion and a seat portion are placed on a single pallet (P ₁ ), and an automobile assembly line from the seat supply station (S ₀ ). rear seat assembly station provided in (La) (S ₁₎ and Bei give a main transfer line (Lm) for conveying the front sheet assembling station (S _2),
In addition to the rear seat assembly station (S ₁ ) and the front seat assembly station (S ₂ ), an auxiliary assembly station (S ₃ ) is provided in the automobile assembly line (La), and this auxiliary assembly station (S ₃ ) Is provided so as to pass through the pallet (P ₂ ) on which a sheet (RR, MI) other than the front seat (FR) and the separate rear seat (SR) is placed alone. in the transport device for an automobile seat that is configured to convey the auxiliary assembly station by a line (Ls) (S _3), the auxiliary transfer line a (Ls),
A first sub-transport line for transporting a pallet (P ₂ ) on which a sheet (RR, MI) other than the front sheet (FR) is placed from the sheet supply station (S ₀ ) via the auxiliary assembly station (S ₃ ). (Ls ₁ )
A carriage (D) for conveying empty pallets (P ₂ ) in a stacked state;
Pallet transfer device (41) for transferring empty pallets (P ₂ ) in a stacked state to a cart (D) positioned by a cart positioning device (101) provided at the downstream end of the first sub-transport line (Ls ₁ ). )When,
A second sub-transport line (Ls ₂ ) on which a carriage (D) carrying an empty pallet (P ₂ ) travels;
The third auxiliary transfer line for conveying the second empty pallet (P ₂₎ said sheet supply station receive mounted on carriage (D) at the downstream end of the auxiliary transfer line _{(Ls 2) (S 0)} (Ls 3) When,
Consisting of
The carriage (D) includes a free roller conveyor (74) on which an empty pallet (P ₂ ) is placed, and fixed stoppers (75, 76, 3) provided on three sides so as to surround the free roller conveyor (74). 77) and a stopper (78) which is provided on one side and can be erected and fallen by a stopper operating mechanism (79),
The third is arranged a pair of photoelectric tube sensor (122) at the upstream end of the auxiliary transfer line (Ls _3), the third conveyor laid in the auxiliary transfer line (Ls ₃₎ (111), the photoelectric tube sensor (122 The apparatus for conveying an automobile sheet is characterized in that it is driven by shading .

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