WO2009142293A1 - 車体に対する足回り部品の同期搬送システム及び同期搬送方法 - Google Patents
車体に対する足回り部品の同期搬送システム及び同期搬送方法 Download PDFInfo
- Publication number
- WO2009142293A1 WO2009142293A1 PCT/JP2009/059424 JP2009059424W WO2009142293A1 WO 2009142293 A1 WO2009142293 A1 WO 2009142293A1 JP 2009059424 W JP2009059424 W JP 2009059424W WO 2009142293 A1 WO2009142293 A1 WO 2009142293A1
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- Prior art keywords
- conveyor
- floor
- main line
- line portion
- conveying device
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 36
- 230000032258 transport Effects 0.000 claims description 73
- 230000001360 synchronised effect Effects 0.000 claims description 45
- 230000008569 process Effects 0.000 claims description 24
- 238000011144 upstream manufacturing Methods 0.000 claims description 17
- 239000000725 suspension Substances 0.000 description 58
- 230000008859 change Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
- B65G47/06—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines
- B65G47/08—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding
- B65G47/084—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding grouping articles in a predetermined 2-dimensional pattern
- B65G47/088—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding grouping articles in a predetermined 2-dimensional pattern cylindrical articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/04—Joining preassembled modular units composed of sub-units performing diverse functions, e.g. engine and bonnet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/18—Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
- B65G35/06—Mechanical conveyors not otherwise provided for comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path
Definitions
- the present invention relates to a synchronous conveyance system and a synchronous conveyance method in an assembly process of an underbody part to a vehicle body.
- the synchronous conveyance apparatus which changes the position of the trolley
- the change of the position of the carriage is performed with reference to the vehicle body mounted on the overhead conveyor among the overhead conveyor and the slat conveyor in synchronization with each other.
- the synchronous conveyance apparatus of the said patent document 1 aims at making the assembly position of the suspension part with respect to a vehicle body differ according to a vehicle type.
- the synchronous transport device includes a frame (170) and a dog (3D) attached to a slat conveyor, and a plurality of start signal switches (S1, S2, S3) corresponding to a vehicle type operated by the dog, A clamp unit (150) disposed on the carriage for clamping a predetermined portion of the frame, a carriage stopper device (10) capable of stopping movement of the carriage by the slat conveyor, and a host computer for distributing vehicle type data Have.
- Each of the start signal switches can detect the dog. However, only the start signal switch corresponding to the corresponding vehicle type detects the dog based on the vehicle type data signal from the host computer. At this time, the clamp units provided on both sides of the carriage clamp the frames provided on both sides of the slat conveyor.
- each clamp unit of the cart clamps each frame of the slat conveyor.
- the stop of the carriage by the carriage stopper device is released.
- bogie and axle part components conveyed by a slat conveyor are conveyed in the state positioned in the position according to a vehicle model with respect to the vehicle body mounted in an overhead conveyor.
- the above-described conventional configuration constitutes a relatively large cart return device that moves the cart up and down using underground pits.
- the installation cost and operating cost of the apparatus have increased.
- the slat conveyor must be provided with the pair of frames for each carriage. At the same time, it is necessary to provide the pair of clamp units on the carriage. For this reason, the above conventional configuration requires high cost.
- an object of the present invention is to suppress the installation cost and the operating cost of this device in a synchronous transport device and a synchronous transport method for undercarriage parts with respect to a vehicle body.
- an object of the present invention is to suppress the complexity due to the response to the vehicle type change and simultaneously reduce the cost.
- a synchronous transportation system for undercarriage parts to a vehicle body includes: an overhead conveyor that conveys the vehicle body; a floor conveyor that conveys the suspension parts; and a control that controls the operation of the overhead conveyor and the floor conveyor.
- a synchronous conveyance system comprising: an apparatus; and a conveying device on which the undercarriage component is placed, wherein the overhead conveyor and the floor conveyor are synchronized with each other when the undercarriage part is assembled to the vehicle body.
- the floor-side conveyor has a main line portion parallel to the workpiece conveying direction of the overhead conveyor, a main path provided along the factory floor surface, and a floor side on which the conveying device travels along the main path A chain conveyor and a friction conveyor, and the floor side chain conveyor is the main conveyor A sub-line portion in parallel with the main line portion of the road, and a sub-path provided along the factory floor, and an engagement portion that engages with the transport device that travels along the sub-path,
- the friction conveyor has a return part that connects between an end point and a start point of the main line part in the main path, and is disposed in the return part, and contacts the transport apparatus by contacting the transport apparatus.
- the friction roller disposed upstream of the starting point of the main line portion is driven to move the conveying device to the Sending to the main line portion; running the conveying device engaged with the engaging portion to the end point of the main line portion; releasing the engagement between the conveying device and the engaging portion at the end point of the main line portion
- the control device drives the friction roller disposed on the downstream side of the end point of the main line portion in the return portion to guide the transport device to the return portion.
- the carrier device includes a base on which the underbody parts are mounted at a predetermined position; and projects downward from the base.
- a trunnion pin that engages with the main path so as to travel on the main path; a phase switching unit that is provided on the base and changes the position of the trunnion pin with respect to the base in a workpiece transfer direction; and the trunnion pin
- a plurality of eaves members connected to each other via a plurality of pins including; a receiving portion made of a plurality of continuous surfaces of the eaves members and receiving the driving force by contacting the friction roller;
- a plurality of trolleys each pivotally supported by each of the trunnion pins, and each trolley pivotally supported by each trunnion pin is engaged with the engaging portion of the floor-side chain conveyor. Engaged portion is provided that.
- a method for synchronously conveying an undercarriage part to a vehicle body includes: an overhead conveyor that conveys the vehicle body; and a floor-side conveyor that conveys the undercarriage part, wherein the undercarriage part is assembled to the vehicle body.
- the overhead conveyor and the floor conveyor are synchronized with each other, wherein the floor conveyor has a main line portion parallel to the workpiece conveyance direction of the overhead conveyor, along the factory floor A main path provided, and a floor-side chain conveyor and a friction conveyor for running a conveying device on which the undercarriage component is placed along the main path, and the floor-side chain conveyor is connected to the main path.
- An engagement portion that engages with the transport device that travels along a road, and the friction conveyor includes a return portion that connects an end point and a start point of the main line portion in the main route, and the return portion.
- a plurality of individually driveable friction rollers that run the conveying device by contacting the conveying device, and the control device synchronously controls the floor-side chain conveyor and the overhead conveyor. Controlling the friction conveyor so that the transport device can stop at a predetermined speed at a predetermined position of the return unit; and stop the upstream of the start point of the main line unit in the return unit.
- the transport device in the step of assembling the suspension part to be transported to the floor-side conveyor with respect to the vehicle body transported to the overhead conveyor, the transport device along the main path along the factory floor ( Trolley). And this is engaged with the engaging part which goes around along the sub route along the factory floor in the main line part of the main route.
- the overhead conveyor carrying the vehicle body and the carriage carrying the suspension parts can be conveyed together.
- this invention can hold down the installation cost and operating cost of the said apparatus.
- the transport device when the transport device is engaged with the engaging portion of the floor-side chain conveyor that operates at the same cycle as the overhead conveyor, the position of the undercarriage component is changed to the trunnion pin, and thus the engaging portion of the floor-side chain conveyor. In contrast, it is displaced in the workpiece transfer direction.
- the suspension part is mounted in a predetermined positioning state on the base of the transport device and the base.
- the assembly position of the underbody parts with respect to the vehicle body can be varied depending on the vehicle type.
- the change in the relative position between the base and the trunnion pin is completed by a phase switching unit provided on the base. Thereby, the complexity and high cost accompanying the response
- FIG. 1 is a top view of a synchronous transfer apparatus according to an embodiment of the present invention.
- FIG. 2 is a top view mainly showing a factory floor portion of the synchronous transfer device according to the embodiment.
- FIG. 3 is a side view of a main part of the synchronous conveyance device according to the embodiment.
- FIG. 4 is a side view mainly showing a factory floor portion of the transfer device of the synchronous transfer device according to the embodiment.
- FIG. 5 is a top view of FIG. 6 is a cross-sectional view taken along the line AA in FIG.
- FIG. 1 to 3 show a synchronous transport device used in a process of assembling a rear suspension assembly R (suspension part) to a vehicle body W mounted and transported on an overhead conveyor 100 in a vehicle body assembly process of an automobile.
- the overhead conveyor 100 causes the hanger 101 to travel along the guide rail 104.
- the hanger 101 is configured by engaging a passive protrusion 103 with a driving protrusion 102.
- a floor-side conveyor 40 for running the transport device 1 for transporting the rear suspension assembly R is disposed on the floor of the factory.
- the control device 90 controls the operations of the conveyors 40 and 100.
- the conveyors 40 and 100 convey the vehicle body W and the rear suspension assembly R in synchronization with each other. Further, the rear suspension assembly R can be raised at a predetermined position and assembled to the vehicle body W.
- the overhead conveyor 100 conveys the vehicle body W substantially horizontally and linearly.
- the arrow f in a figure shows the conveyance direction of the overhead conveyor 100.
- FIG. In the figure, f ′ indicates the workpiece conveyance direction of the floor conveyor 40.
- the floor conveyor 40 includes a slit 28, a floor chain conveyor 24, and a friction conveyor 31.
- the slit 28 is formed in the factory floor 27.
- the slit 28 includes a linear main line portion 28a that makes the overhead conveyor 100 and the workpiece conveyance direction parallel (substantially overlap in a top view).
- the floor-side chain conveyor 24 runs the transport device 1 for transporting the rear suspension assembly R along the slit 28.
- the slit 28 forms a loop-shaped conveyance path having a long oval shape along the workpiece conveyance direction of the overhead conveyor 100 in a top view.
- a portion of the slit 28 excluding the main line portion 28a is referred to as a return portion 28d.
- the return portion 28d is a portion from the end point 28c to the start point 28b of the main line portion 28a.
- a plurality of friction rollers 30 are disposed at appropriate positions. The operation of the friction roller 30 is controlled by the control device 90 so that the conveying device 1 can run and stop at a predetermined speed.
- the rear suspension assembly is assembled between the start point 28b and the end point 28c of the main line portion 28a.
- the floor side chain conveyor 24 includes a sub line portion 25a, a guide rail 25, and a drive projection 24a.
- the sub line portion 25 a is linear and is in parallel with the main line portion 28 a of the slit 28.
- the guide rail 25 is provided along the factory floor 27.
- the drive protrusion 24 a faces the transport device 1 that travels along the guide rail 25.
- the floor side chain conveyor 24 and the overhead conveyor 100 are controlled by the control device 90 so as to be synchronized with each other.
- the guide rail 25 forms a loop-shaped conveyance path extending elongated along the overhead conveyor 100 in a top view.
- the guide rail 25 is disposed on the inner peripheral side of the slit 28 except for the auxiliary line portion 25a in a top view.
- the circumferential length of the guide rail 25 is shorter than the circumferential length of the slit 28.
- the guide rail 25 is disposed at the bottom of the small space 27a below the slit 28 (under the factory floor).
- the friction conveyor 31 includes the return portion 28d and each friction roller 30.
- Each friction roller 30 includes an electric drive mechanism 29.
- the drive mechanism 29 is individually driven and controlled by the control device 90. As each friction roller 30 comes into frictional contact with the receiving portion 35 of the transport apparatus 1, the transport apparatus 1 travels or stops.
- the transport device 1 places and transports the rear suspension assembly R on the base 10 in a properly positioned state.
- the conveying apparatus 1 includes a front pin 2a extending vertically at a front end of a first rod (node) member 2 extending substantially horizontally in the small space 27a below the base 10 (under the factory floor).
- a main body 3a of the front trolley 3 is pivotally supported at the lower end of the front pin 2a so as to be rotatable.
- the second hook member 4 is pivotably connected to the front end of the second hook member 4 by a trunnion pin 20 extending vertically.
- a main body portion 5a of the passive trolley 5 is pivotally supported at the lower end of the trunnion pin 20 so as to be rotatable.
- the third flange member 6 is connected to the front end of the third flange member 6 so as to be swingable by a connecting pin 6a extending vertically.
- a main body 7a of the load trolley 7 is pivotally supported at the lower end of the connecting pin 6a so as to be rotatable.
- the fourth hook member 8 is swingably connected to the front end of the fourth hook member 8 by a connecting pin 6 a extending vertically.
- a main body portion 7a of a load trolley 7 similar to the above is pivotally supported at the lower end of the connecting pin 6a so as to be rotatable.
- a rear pin 8 a extending vertically is provided at the rear end of the fourth hook member 8.
- a main body 9a of the rear trolley 9 is pivotally supported at the lower end of the rear pin 8a so as to be rotatable.
- the front trolley 3 includes the main body 3a, a trolley wheel 3b, and a guide roller 3c.
- the trolley wheel 3b is pivotally supported along the front and rear side surfaces of the main body 3a.
- the guide roller 3c is pivotally supported along the upper surface of the main body 3a.
- a leading collar member 2b is fixed to the front pin 2a so as to be oriented in the rotational direction of the front pin 2a.
- the passive trolley 5 includes the main body 5a, a trolley wheel 5b, a guide roller 5c, and a passive protrusion 5d.
- the trolley wheel 5b is pivotally supported along the front and rear side surfaces of the main body 5a.
- the guide roller 5c is pivotally supported along the upper surface of the main body 5a.
- the passive protrusion 5d is provided so as to be able to appear and appear below the main body portion 5a.
- Each road trolley 7 includes the main body 7a, a trolley wheel 7b, and a guide roller 7c.
- the trolley wheel 7b is pivotally supported along the front and rear side surfaces of the main body 7a.
- the guide roller 7c is pivotally supported along the upper surface of the main body portion 7a.
- the rear trolley 9 includes the main body 9a, a trolley wheel 9b, and a guide roller 9c.
- the trolley wheel 9b is pivotally supported along the front and rear side surfaces of the main body 9a.
- the guide roller 9c is pivotally supported along the upper surface of the main body 9a.
- a rear tail member 8b is fixed to the rear pin 8a so as to be oriented in the rotational direction of the rear pin 8a.
- the side surfaces of the eaves members 2, 2b, 4, 6, 8, 8b are arranged so as to be continuous as one surface.
- the side surfaces of these flange members 2, 2 b, 4, 6, 8, 8 b are configured as receiving portions 35 of the friction roller 30.
- the base 10 of the transport apparatus 1 is arranged on the factory floor.
- the upper end of the trunnion pin 20 is rotatably engaged (axially supported) with the front portion of the base 10.
- a plurality of wheels 10 a are pivotally supported on both front and rear sides of the base 10. When each connecting rod travels, the base 10 is pulled by the trunnion pin 20 and travels.
- a pair of guide rails 23 having a substantially U-shaped cross section are arranged to face each other with a space therebetween.
- the trolley wheels 3b, 5b, 7b, 9b on both sides of the trolleys 3, 5, 7, 9 run in the guide rails 23, respectively.
- FIG. 6 shows the passive trolley 5 as an example.
- the other trolleys 3, 7, and 9 have the same configuration.
- the guide rollers 3 c, 5 c, 7 c, 9 c of the trolleys 3, 5, 7, 9 are arranged so as to be sandwiched between the upper ends of the guide rails 23.
- Each of these guide rollers 3 c, 5 c, 7 c, 9 c comes into contact with the upper end of each guide rail 23 as appropriate. This prevents the trolleys 3, 5, 7, and 9 from swinging.
- the engagement position of the trunnion pin 20 with respect to the base 10 is a long slot along the workpiece conveyance direction (front-rear direction) formed in the front center of the base 10 by the phase switching unit 36 configured on the base 10. 37 can be displaced back and forth along 37.
- the phase switching unit 36 includes a pair of guide rails 11, a pair of guide members 12, and a slide member 13.
- the guide rail 11 extends along the workpiece conveyance direction laid on both sides of the long hole 37 on the upper surface of the base 10.
- the guide member 12 is engaged with each of the guide rails 11 so as to be movable in the longitudinal direction.
- the slide member 13 is supported on each guide member 12.
- An upper end portion of the trunnion pin 20 is engaged with the slide member 13 via a bearing member 14. The upper end portion of the trunnion pin 20 passes through the long hole 37 from below the factory floor and protrudes above the base 10.
- a rod screw 15 is pivotally supported on the base 10 so as to be aligned with the long hole 37.
- the bar screw 15 is screwed into the female screw portion 16 so as to penetrate the slide member 13 back and forth.
- a driving shaft of an electric motor 17 supported on the base 10 is connected to the front end of the bar screw 15.
- the electric motor 17 is connected via a belt-type transmission mechanism 18.
- the electric motor 17 is driven and controlled by the control device 90. By driving the electric motor 17, the bar screw 15 is rotated via the transmission mechanism 18. As a result, the slide member 13 is displaced back and forth.
- An elevating part 22 that is moved up and down by a cylinder 21 is disposed at a substantially central part of the base 10.
- a pallet 50 for positioning and mounting the rear suspension assembly R is mounted on the elevating part 22 in a predetermined positioning state.
- the trolley wheels 3 b, 5 b, 7 b, 9 b on both sides of each trolley 3, 5, 7, 9 of the transport device 1 travel in the pair of guide rails 23.
- the guide rail 23 is laid in a loop shape in a top view below the factory floor.
- the trunnion pin 20 projecting downward from the base 10 and the guide roller 26 behind the same travel in a slit 28 formed in the factory floor 27 in a loop shape similar to each guide rail 23 in a top view.
- each guide rail 23 forms a loop-shaped transport path together with the slit 28.
- the guide rail 25 of the floor side chain conveyor 24 is laid (see FIG. 3).
- Each friction roller 30 is disposed immediately before the start point 28b of the main line portion 28a of the slit 28, immediately after the end point 28c of the main line portion 28a, and at a plurality of other locations.
- the friction conveyor 31 includes the friction rollers 30 and the return portion 28d. As a result, the friction conveyor 31 can convey the conveying device 1 at a higher speed than the floor-side chain conveyor 24.
- the floor chain conveyor 24 and the overhead conveyor 100 always operate in a synchronized state by a method such as pulse control.
- the pulse data of the floor side chain conveyor 24 and the overhead conveyor 100 is input to the control device 90.
- the control device 90 acquires information regarding the position of the driving protrusion 102 that engages the hanger 101 in the overhead conveyor 100.
- a control apparatus acquires the information regarding the position of the drive protrusion 24a which engages the conveying apparatus 1 in the floor side chain conveyor 24.
- a first transfer unit 60 and a second transfer unit 70 are disposed in an intermediate portion of the friction conveyor 31.
- the first transfer unit 60 transfers the pallet 50 on which the rear suspension assembly R is mounted to the lifting unit 22 of the transport device 1.
- the second transfer unit 70 discharges the pallet 50 that has been emptied from the elevating unit 22 of the transport device 1.
- the first transfer unit 60 is disposed downstream of the return unit 28d (on the start point 28b side of the main line unit 28a).
- the second transfer unit 70 is arranged on the upstream side of the return unit 28d (on the end point 28c side of the main line unit 28a).
- the transfer parts 60 and 70 are arrange
- a writing device 80 is disposed in the vicinity of the second transfer unit 70.
- the writing device 80 writes vehicle type information in the storage unit 1 a such as an ID plate attached to the transport device 1.
- the writing device 80 is connected to the control device 90.
- the control device 90 sequentially overwrites the storage unit 1a with vehicle type information based on a production plan transmitted from a production management computer (not shown).
- the hanger 101 is also provided with a storage unit 101a such as an ID plate.
- the hanger 101 is suspended from the overhead conveyor 100 and conveyed.
- Information such as the vehicle type and specifications of the vehicle body W mounted on the hanger 101 is written in the storage unit 101a by a writing device (not shown) connected to the production management computer at the initial stage of the vehicle body assembly process.
- a reader 100a is disposed. The reading device 100a reads vehicle type information written in the storage unit 101a.
- the transport device 1 enters the return portion 28d from the rear suspension assembly assembly process 200. Then, each friction roller 30 is appropriately driven. And the conveying apparatus 1 stops once after being conveyed to the said 2nd transfer part 70 at comparatively high speed. Further, in the second transfer unit 70, the pallet 50 that has been emptied is discharged from the lifting unit 22 of the transport device 1. At the same time, vehicle type information corresponding to the rear suspension assembly R to be placed next on the elevating unit 22 is written into the storage unit 1 a by the writing device 80.
- each friction roller 30 is appropriately driven.
- the transport apparatus 1 is quickly transported to the first transfer unit 60 and temporarily stops.
- the pallet 50 on which the rear suspension assembly R is mounted is mounted on the lifting unit 22 of the transport device 1 in a predetermined positioning state.
- each friction roller 30 is appropriately driven. Then, the transport device 1 is transported at a high speed to a standby position 40a before (upstream) the main line portion 28a in the return portion 28d. At this position, the transfer device 1 stops and waits until it is sent to the main line portion 28a.
- the friction conveyor 31 causes the conveying device 1 to travel at an arbitrary speed and stop at an arbitrary position of the return portion 28d by individually driving each friction roller 30.
- the friction conveyor 31 performs this operation independently of the overhead conveyor 100 and the floor-side chain conveyor 24 synchronized therewith.
- the electric motor 17 operates based on the vehicle type information written in the storage unit 1a.
- the electric motor 17 is supported on the base 10.
- the slide member 13 and the trunnion pin 20 move along the guide rail 11 with respect to the base 10 as the bar screw 15 rotates.
- the phase between the vehicle body W and the rear suspension assembly R based on the vehicle type information is adjusted.
- the position of the trunnion pin 20 with respect to the base 10 changes in the workpiece conveyance direction.
- the relative position between the passive protrusion 5d of the passive trolley 5 below the trunnion pin 20 and the rear suspension assembly R mounted on the base 10 changes in the workpiece conveyance direction.
- the driving protrusion 24 a of the floor side chain conveyor 24 synchronized with the overhead conveyor 100 does not change the relative position with the vehicle body W mounted on the overhead conveyor 100. Instead, as described above, the relative position between the passive protrusion 5d and the rear suspension assembly R is changed in the workpiece conveyance direction. As a result, the relative position between the vehicle body W and the rear suspension assembly R can be changed in the workpiece conveyance direction. That is, the phase can be adjusted.
- the control device 90 acquires position information immediately before the hanger 101 of the overhead conveyor 100 is carried into the rear suspension assembly assembly process 200 from the pulse data. Then, the control device 90 drives the friction roller 30 disposed at the standby position 40a. At the same time, the control device 90 drives the friction roller 30 disposed on the downstream side of the friction roller 30 (including the friction roller 30 disposed immediately before the start point 28b of the main line portion 28a). And the control apparatus 90 sends out the conveying apparatus 1 which was in the said stand-by position 40a rapidly to the transfer position 40b of the main line part 28a upstream.
- the trunnion pin 20 and the passive protrusion 5d of the transport apparatus 1 are located in the vicinity of the starting point 28b of the main line portion 28a.
- the passive protrusion 5d is engaged with the drive protrusion 24a of the floor-side chain conveyor 24.
- the floor side chain conveyor 24 is synchronized with the overhead conveyor 100.
- the control device 90 engages the passive protrusion 5d of the transfer device 1 at the standby position 40a with the drive protrusion 24a of the floor side chain conveyor 24 in the vicinity of the starting point 28b of the main line portion 28a, the transfer device 1 is sent to the main line portion 28a.
- the reading device 100 a disposed immediately before the rear suspension assembly assembling step 200 reads the vehicle type information written in the storage unit 101 a provided in the hanger 101. At the same time, the reading device 100a transmits this information to the control device 90. Then, in the control device 90, the vehicle type information and the vehicle type information written in the storage unit 1a of the transfer device 1 sent to the main line portion 28a (that is, the vehicle type information of the rear suspension assembly R placed on the transfer device 1). A comparison is made.
- the hanger 101 of the overhead conveyor 100 is carried into the rear suspension assembly assembling process 200 as it is.
- the drive protrusion 24 a of the floor side chain conveyor 24 engages with the passive protrusion 5 d of the transport device 1.
- the hanger 101 and the conveying apparatus 1 are conveyed synchronously.
- the assembly position of the rear suspension assembly R and the position of the rear suspension assembly R in the vehicle body W coincide with each other in a top view while being separated from each other in the vertical direction.
- the transport device 1 After assembling the rear suspension assembly R to the vehicle body W, the transport device 1 travels to the transfer position 40c downstream of the main line portion 28a. Then, the passive protrusion 5 d of the transport device 1 is immersed in the main body 5 a of the passive trolley 5. Thereby, the engagement of the passive protrusion 5d of the transport device 1 with respect to the driving protrusion 24a of the floor side chain conveyor 24 is released. At this time, the hanger 101 of the overhead conveyor 100 is in a position immediately before being unloaded from the rear suspension assembly assembling process 200.
- the passive protrusion 5d and the trunnion pin 20 of the transport device 1 are at a branching position between the slit 28 of the factory floor 27 and the guide rail 25 of the floor-side chain conveyor 24 below the factory floor in a top view. That is, the passive protrusion 5d and the trunnion pin 20 are located near the end point 28c of the main line portion 28a.
- the conveying apparatus 1 leaves
- the control device 90 acquires position information immediately before the hanger 101 of the overhead conveyor 100 is unloaded from the rear suspension assembly assembly process 200 from the pulse data. Next, the control device 90 drives the friction roller 30 disposed immediately after the end point 28c of the main line portion 28a in the return portion 28d of the friction conveyor 31. At the same time, the control device 90 drives the friction roller 30 disposed downstream of the friction roller 30 and upstream of the second transfer unit 70. In this way, the control device 90 causes the transport device 1 that has entered the return portion 28d side to be promptly transported to the second transfer portion 70. In other words, the control device 90 guides the transport device 1 into the return portion 28d when the engagement between the passive protrusion 5d of the transport device 1 and the drive protrusion 24a of the floor-side chain conveyor 24 is released.
- the control device 90 stops the conveyors 40 and 100 in order to stop the rear suspension assembly assembling process 200.
- the control device 90 activates the warning lamp 90a and the alarm device 90b.
- the control device 90 informs the surroundings of the abnormality.
- the worker performs supplementary work.
- the operator visually confirms the vehicle types of the vehicle body W and the rear suspension assembly R.
- the operator returns the process after correcting the difference.
- the vehicle type is actually different, the operator prepares a regular rear suspension assembly R and separately assembles it on the vehicle body W.
- the synchronous transportation device (and the synchronous transportation method) for the underbody parts with respect to the vehicle body in the above embodiment includes the overhead conveyor 100 for conveying the vehicle body W; the floor conveyor 40 for conveying the underbody parts; A control device 90 for controlling the operation of the conveyors 40, 100, and the synchronous transport device synchronizes the conveyors 40, 100 with each other in the assembly step 200 of the undercarriage parts with respect to the vehicle body W.
- the side conveyor 40 has a main line portion 28a that is parallel to the overhead conveyor 100 and the workpiece transfer direction, and is provided along the factory floor 27. The side conveyor 40 is used for transferring the undercarriage parts along the main path.
- the floor-side chain conveyor 24 has a sub-line portion 25a in parallel with the main line portion 28a of the main route and is provided along the factory floor 27, and travels along the sub-route.
- the friction conveyor 31 is disposed on the return path 28d from the end point 28c of the main line section 28a on the main path to the start point 28b, and the return section 28d.
- a plurality of individually driveable friction rollers 30 that run the transport device 1 by contacting the transport device 1, and the control device 90 synchronizes the floor-side chain conveyor 24 and the overhead conveyor 100.
- the control device 90 controls the transport device 1 to travel at a predetermined speed at a predetermined location of the return portion 28d.
- the control unit 90 controls the friction conveyor 31 so that it can be stopped, and the control device 90 stops the transport device 1 on the upstream side of the start point 28b of the main line portion 28a in the return portion 28d.
- the control device 90 is disposed upstream of the starting point 28b of the main line portion 28a.
- the friction roller 30 is driven to feed the conveying device 1 to the main line portion 28a, and the conveying device 1 engaged with the engaging portion of the floor side chain conveyor 24 is the end point 28c of the main line portion 28a.
- the control device When the transport device 1 disengages the engagement portion after traveling to the control device, the control device The drives the friction roller 30 disposed on the downstream side of the end point 28c of the main line portion 28a of 8d by guiding the conveying device 1 to the return portion 28d.
- the conveying device 1 in the process of assembling the rear suspension assembly R conveyed to the floor conveyor 40 to the vehicle body W conveyed to the overhead conveyor 100, the conveying device 1 ( Trolley). At the same time, the conveying device 1 is engaged with the drive protrusion 24a. The drive protrusion 24 a circulates along the guide rail 25 along the factory floor 27 in the main line portion 28 a of the slit 28, similarly to the transport device 1.
- the overhead conveyor 100 on which the vehicle body W is mounted and the carriage on which the rear suspension assembly R is mounted can be conveyed in synchronization with each other. That is, it is possible to reduce the installation cost and operation cost of the transfer device compared to the case of using a large cart return device that raises and lowers the cart using the underground pit.
- the synchronous transport device 1 includes a base 10 on which the undercarriage component is mounted at a predetermined position; a trunnion pin that projects downward from the base 10 so as to be able to travel along the main path. 20; a phase switching unit 36 provided on the base 10 for changing the position of the trunnion pin 20 with respect to the base 10 in the workpiece transfer direction; and via the trunnion pin 20 and other pins 2a, 6a, 8a A plurality of flange members 2, 2b, 4, 6, 8, 8b connected to each other; a plurality of surfaces provided to be continuous with each other by these flange members 2, 2b, 4, 6, 8, 8b A receiving portion 35 that contacts the friction roller 30 and receives the driving force; and a plurality of trolleys 3, 5, 7, and 9 that are pivotally supported by the pins 2a, 6a, and 8a, respectively. And the tiger The said trolley 5 which is pivotally supported by the Onpin 20, engaged portion is provided for said engaging portion of said floor side chain conveyor
- the base 10 of the transport device 1 and the base 10 are in a predetermined positioning state.
- the position of the mounted rear suspension assembly R is displaced in the workpiece conveyance direction with respect to the trunnion pin 20 and with respect to the drive protrusion 24a of the floor side chain conveyor 24.
- the assembly position of the rear suspension assembly R with respect to the vehicle body W can be varied according to the vehicle type.
- the change in the relative position between the base 10 and the trunnion pin 20 is completed by the phase switching unit 36 provided in the base 10. Thereby, it is possible to suppress the complexity and high cost due to the response to the vehicle type change.
- the present invention is not limited to the above embodiment.
- the present invention can be applied to a process of assembling other suspension parts such as an engine / mission assembly in addition to the rear suspension assembly R to the vehicle body W.
- the structure in the said embodiment is an example of this invention.
- Various modifications can be made without departing from the scope of the invention.
- the overhead conveyor carrying the vehicle body and the carriage carrying the suspension parts can be conveyed in synchronization with each other. That is, it is possible to reduce the installation cost and operation cost of the transfer device compared to the case of using a large cart return device that raises and lowers the cart using the underground pit.
- the assembly position of the underbody parts relative to the vehicle body can be varied depending on the vehicle type.
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Abstract
Description
本願は、2008年5月23日に、日本国に出願された特願2008-135524号に基づき優先権を主張し、その内容をここに援用する。
具体的に、上記同期搬送装置は、スラットコンベアに取り付けられたフレーム(170)及びドッグ(3D)と、このドッグにより作動する車種に対応する複数の開始信号スイッチ(S1,S2,S3)と、台車に配設されて前記フレームの所定箇所をクランプするクランプユニット(150)と、スラットコンベアによる台車の移動を停止することができる台車ストッパ装置(10)と、車種データを配信する上位コンピュータとを有する。前記各開始信号スイッチは全て前記ドッグを検出することができる。しかし、前記上位コンピュータからの車種データ信号により、該当する車種に応じた開始信号スイッチのみがドッグを検出する。このとき、台車の両側に設けたクランプユニットが、スラットコンベアの両側に設けたフレームをクランプする。そして、前記台車ストッパ装置が台車を停止させた状態で、前記該当する車種に応じた開始信号スイッチがドッグを検知すると、台車の各クランプユニットがスラットコンベアの各フレームをクランプする。これと同時に、前記台車ストッパ装置による台車の停止が解除される。これにより、スラットコンベアで搬送される台車及び足回り部品が、オーバーヘッドコンベアに搭載される車体に対して車種に応じた位置に位置決めされた状態で搬送される。
また、足回り部品の組み付け工程を流れる車種が変更あるいは増加する度に、前記開始信号スイッチの位置や数を変更する必要があった。そのため、上記従来の構成は煩雑であった。また、スラットコンベアには台車毎に前記一対のフレームを設ける必要がある。同時に、台車にも前記一対のクランプユニットを設ける必要がある。このため、上記従来の構成は高いコストが必要だった。
そこで本発明は、車体に対する足回り部品の同期搬送装置及び同期搬送方法において、この装置の設置コスト及び運転コストを抑えることを目的とする。同時に、本発明は、車種変更への対応による煩雑さを抑えて、同時にコストを低くすることも目的とする。
図1~3は、自動車の車体組み立て工程において、オーバーヘッドコンベア100に搭載されて搬送される車体Wに対して、リヤサスペンションアッシーR(足回り部品)を組み付ける工程に用いられる同期搬送装置を示す。
まず、リヤサスペンションアッシー組み付け工程200からリターン部28d内に搬送装置1が進入する。すると、各フリクションローラ30が適宜駆動する。そして、搬送装置1は、前記第二移載部70まで比較的高速で搬送されてから、一旦停止する。さらに、第二移載部70では、搬送装置1の昇降部22から空になったパレット50が排出される。それと同時に、この昇降部22に次に載置するリヤサスペンションアッシーRに対応する車種情報が、前記書き込み装置80により前記記憶部1aに書き込まれる。
そして、上記実施形態における構成はこの発明の一例である。当該発明の要旨を逸脱しない範囲で種々の変更が可能である。
2 第一杆部材
2a フロントピン
2b 先頭杆部材
3 フロントトロリー
4 第二杆部材
5 受動トロリー
5d 受動突起(被係合部)
6 第三杆部材
6a 連結ピン
7 ロードトロリー
8 第四杆部材
8a リヤピン
8b 後尾杆部材
9 リヤトロリー
10 基台
20 トラニオンピン
24 フロア側チェーンコンベア
24a 駆動突起(係合部)
25 ガイドレール(副経路)
25a 副ライン部
27 工場床面
28 スリット(主経路)
28a 主ライン部
28b 始点
28c 終点
28d リターン部
30 フリクションローラ
31 フリクションコンベア
35 受部
36 位相切換部
40 フロア側コンベア
90 制御装置
100 オーバーヘッドコンベア
200 リヤサスペンションアッシー組み付け工程
W 車体
R リヤサスペンションアッシー(足回り部品)
Claims (5)
- 車体を搬送するオーバーヘッドコンベアと;
足回り部品を搬送するフロア側コンベアと;
前記オーバーヘッドコンベア及び前記フロア側コンベアを作動制御する制御装置と;
前記足回り部品が載置される搬送装置と;
を備えた同期搬送システムであって、
前記車体に前記足回り部品を組み付ける際に前記オーバーヘッドコンベアと前記フロア側コンベアとは互いに同期し、
前記フロア側コンベアは、
前記オーバーヘッドコンベアのワーク搬送方向と平行な主ライン部を有し、工場床面に沿って設けられる主経路と、
この主経路に沿って前記搬送装置を走行させるフロア側チェーンコンベア及びフリクションコンベアと、
を有し、
前記フロア側チェーンコンベアは、
前記主経路の前記主ライン部と並列をなす副ライン部を有し、前記工場床面に沿って設けられる副経路と、
この副経路に沿って走行する前記搬送装置に係合する係合部と、
を有し、
前記フリクションコンベアは、
前記主経路における前記主ライン部の終点と始点との間を連結するリターン部と、
このリターン部に配置され、前記搬送装置に接触することによって前記搬送装置を走行させる個別駆動可能な複数のフリクションローラと、
を有し、
前記制御装置は、
前記フロア側チェーンコンベア及び前記オーバーヘッドコンベアを互いに同期制御し、かつ、前記リターン部の所定箇所で前記搬送装置が所定速度で走行して停止するように、前記フリクションコンベアを制御し;
前記リターン部における前記主ライン部の始点の上流側で停止された前記搬送装置を前記オーバーヘッドコンベアと同期する前記フロア側チェーンコンベアの前記係合部に係合させる際に、前記主ライン部の始点の上流側に配置した前記フリクションローラを駆動させて前記搬送装置を前記主ライン部に送り出し;
前記係合部に係合した前記搬送装置を前記主ライン部の終点まで走行させ;
前記主ライン部の終点において前記搬送装置と前記係合部との係合を解除する際に、前記制御装置は前記リターン部における前記主ライン部の終点の下流側に配置した前記フリクションローラを駆動させて前記搬送装置を前記リターン部に導くことを特徴とする同期搬送システム。 - 前記搬送装置は、
前記足回り部品を所定の位置に搭載する基台と;
この基台から下方に突出し、前記主経路を走行できるように前記主経路係合するトラニオンピンと;
前記基台に設けられ、この基台に対する前記トラニオンピンの位置をワーク搬送方向で変化させる位相切換部と;
前記トラニオンピンを含む複数のピンを介して互いに連結される複数の杆部材と;
これら各杆部材の互いに連続する複数の面からなり、前記フリクションローラに接触してその駆動力を受ける受部と;
前記各ピンにそれぞれ軸支される複数のトロリーと;
を有し、
前記各トラニオンピンに軸支される前記各トロリーには、前記フロア側チェーンコンベアの前記係合部に係合する被係合部が設けられていることを特徴とする請求項1に記載の同期搬送システム。 - 車体を搬送するオーバーヘッドコンベアと;
前記オーバーヘッドコンベアと同期するように制御され、足回り部品を搬送するフロア側コンベアと;
を備え、
前記フロア側コンベアは、工場床面に沿って設けられた主経路と;前記足回り部品が載置される搬送装置を前記主経路に沿って走行させるフロア側チェーンコンベア及びフリクションコンベアと;前記工場床面に沿って設けられた副経路と;を有し、
前記主経路は、前記オーバーヘッドコンベアの車体搬送方向と平行な主ライン部と;この主ライン部の終点と始点との間を連結するリターン部と;を有し、
前記副経路は、前記主ライン部と並列をなす副ライン部を有し、
前記フロア側チェーンコンベアは、前記副経路に沿って走行する、前記搬送装置に係合可能な係合部を有し、
前記フリクションコンベアは、前記リターン部に配置され、前記搬送装置に接触することによって前記搬送装置を走行させる、個別駆動可能な複数のフリクションローラを有することを特徴とする同期搬送システム。 - 車体を搬送するオーバーヘッドコンベアと;
足回り部品を搬送するフロア側コンベアと;
を備え、
前記車体に前記足回り部品を組み付ける際に前記オーバーヘッドコンベアと前記フロア側コンベアとを互いに同期させる同期搬送方法であって、
前記フロア側コンベアは、
前記オーバーヘッドコンベアのワーク搬送方向と平行な主ライン部を有し、工場床面に沿って設けられる主経路と、
この主経路に沿って前記足回り部品が載置される搬送装置を走行させるフロア側チェーンコンベア及びフリクションコンベアと、
を有し、
前記フロア側チェーンコンベアは、
前記主経路の前記主ライン部と並列をなす副ライン部を有し、前記工場床面に沿って設けられる副経路と、
この副経路に沿って走行する前記搬送装置に係合する係合部と、
を有し、
前記フリクションコンベアは、
前記主経路における前記主ライン部の終点と始点とを連結するリターン部と、
このリターン部に配置され、前記搬送装置に接触することによって前記搬送装置を走行させる個別駆動可能な複数のフリクションローラと、
を有し、
前記制御装置は、
前記フロア側チェーンコンベア及び前記オーバーヘッドコンベアを互いに同期制御し;
前記搬送装置が前記リターン部の所定箇所で所定の速度で走行して停止できるように、前記フリクションコンベアを制御し;
前記リターン部における前記主ライン部の始点の上流側で停止された前記搬送装置を前記オーバーヘッドコンベアと同期する前記フロア側チェーンコンベアの前記係合部に係合させる際に、前記主ライン部の始点の上流側に配置した前記フリクションローラを駆動させて前記搬送装置を前記主ライン部に送り出し;
前記係合部に係合した前記搬送装置を前記主ライン部の終点まで走行させ;
前記主ライン部の終点において前記搬送装置と前記係合部との係合を解除する際に、前記制御装置は前記リターン部における前記主ライン部の終点の下流側に配置した前記フリクションローラを駆動させて前記搬送装置を前記リターン部に導くことを特徴とする同期搬送方法。 - 請求項3に記載の同期搬送システムを用いた同期搬送方法であって、
前記主ライン部の始点の上流側で停止している前記搬送装置が前記係合部に係合する際に、前記始点の上流側に配置された前記フリクションローラを駆動させて、前記搬送装置を前記主ライン部に送り出す工程と;
前記係合部に係合した前記搬送装置を、前記オーバーヘッドコンベアと同期する前記フロア側チェーンコンベアにより、前記主ライン部の前記始点から前記終点まで走行させる工程と;
前記主ライン部の終点において前記搬送装置と前記係合部との係合が解除される際に、前記終点の下流側に配置された前記フリクションローラを駆動させて、前記搬送装置を前記リターン部に送り出す工程と;
を備えることを特徴とする同期搬送方法。
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CN2009801186842A CN102046456B (zh) | 2008-05-23 | 2009-05-22 | 行走部件相对于车体的同步传送系统及同步传送方法 |
US12/994,046 US8627942B2 (en) | 2008-05-23 | 2009-05-22 | System and method for synchronously conveying underbody components for vehicle body |
GB1020205.9A GB2472552B (en) | 2008-05-23 | 2009-05-22 | System and method for synchronously conveying underbody components for vehicle body |
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Also Published As
Publication number | Publication date |
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GB2472552A (en) | 2011-02-09 |
US20110094855A1 (en) | 2011-04-28 |
GB201215923D0 (en) | 2012-10-24 |
GB201020205D0 (en) | 2011-01-12 |
JP2009280134A (ja) | 2009-12-03 |
US8627942B2 (en) | 2014-01-14 |
GB2492264A (en) | 2012-12-26 |
CN102046456B (zh) | 2013-11-27 |
GB2492264B (en) | 2013-06-12 |
CN102046456A (zh) | 2011-05-04 |
JP5255906B2 (ja) | 2013-08-07 |
GB2472552B (en) | 2013-02-13 |
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