JPH0416767Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention can be used, for example, in an automobile manufacturing factory.
This invention relates to a hanging conveyance device used to convey parts such as doors along a fixed path.

BACKGROUND TECHNOLOGY Conventionally, as this type of hanging conveyance device, as seen in, for example, Japanese Utility Model Publication No. 60-23239,
A structure is provided in which a plurality of trolleys supported and guided by guide rails are provided, hangers (support devices) are provided between these trolleys, and a driving chain is provided along the constant path. By the way, a hanger is used to support and transport a long object with its length direction aligned with the direction of a certain path. Therefore, for example, in a storage path section, the length of the transported object It has to be stored in a long size corresponding to the size of the paper, which is inefficient in terms of storage efficiency. In addition, the transported object is supported and transported with the left and right directions fixed, for example. Therefore, when processing work is performed on both the left and right sides of the transported object, there is space for the processing work on both sides of the fixed path. In addition, processing equipment becomes necessary. Therefore, recently, as seen in Utility Model Application No. 61-108212, hanger frames have been added to trolley devices.
The hanger frame is arranged so as to be rotatable around the vertical axis via a support pin, and a pair of front and rear guide rollers are provided at the bottom of the hanger frame, and the guide rollers are installed at a predetermined location on the floor below the movement trajectory of the hanger frame. A configuration is provided in which a guide groove is provided to guide the roller and apply a turning force to the hanger frame.

Problems to be Solved by the Invention According to the conventional type described above, the guide roller located forward of the vertical axis and at the lower end position acts on the guide groove while moving the trolley device, and is provided only at the upper end. Since the hanger frame is rotated around the vertical axis formed by the support pin, it tends to get caught when the guide roller acts on the guide groove, and the lower part of the hanger frame lags behind the trolley device. , this hanger frame will be shaking. As a result, the support pin portion becomes curved, making it difficult to turn smoothly.

An object of the present invention is to provide a suspended conveyance device which has a simple structure and whose support device can smoothly perform normal conveyance and rotation without shaking.

Means for Solving the Problems In order to achieve the above object, the suspended conveyance device of the present invention has a movable body that is guided by a main rail and can move freely, and a support device for the conveyed object is attached around the vertical axis. The supporting device is provided at a lower part thereof to be rotatable, and includes a fulcrum roller located on the vertical axis, and a plurality of swings located apart from the vertical axis and above the fulcrum roller. A runout prevention roller is provided, and a runout prevention rail that guides these runout prevention rollers is arranged along the lower part of the main rail, and the runout prevention rail is omitted at the turning place, and this omission is provided. A fulcrum rail for guiding the fulcrum roller is disposed along the lower part of the main rail and below the shake prevention rail.

Effects According to the configuration of the present invention, by guiding the plurality of anti-shake rollers with the anti-shake rail, the supporting device is guided at multiple points at the bottom, and normal conveyance can be carried out without shaking. I can do it. Furthermore, by removing the anti-runout roller from the anti-runout rail in the cutout part and guiding the fulcrum roller by the fulcrum rail, the support device can be rotated around the vertical axis with respect to the movable body. Since the support device is positioned at two points, upper and lower, by the movable body and the fulcrum roller, it can be smoothly rotated around the vertical axis without wobbling or wobbling. Moreover, the rotation can be performed smoothly at all times, even during transport or when transport is stopped. In addition, by arranging the prevention rollers and fulcrum rollers, as well as the runout prevention rails and fulcrum rails, with vertical displacement, it is possible to smoothly switch between normal conveyance without shaking and turning without shaking or bending. It can be done quickly and automatically.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. In FIGS. 1 and 2, reference numeral 1 denotes a suspended conveyance device, which includes a trolley guide rail (an example of a main rail) 2, a drive device rail 3 disposed above the trolley guide rail 2, and a trolley guide rail 2 supported by the trolley guide rail 2. A trolley device (an example of a moving body) 5 that can be guided and run freely on a fixed path 4, a conveyed object support device 6 attached to the trolley device 5, and the rail 3 for the drive device.
The trolley drive device (such as a chain conveyor) 7 is supported and guided by a trolley drive device (chain conveyor, etc.). The trolley device 5
is a front trolley 8, a rear trolley 9, and trunnion pins 10, 1 connected from both trolleys 8, 9.
1, and guide wheels 13, 14 and anti-lateral vibration wheels 15, 16 attached to both trolleys 8, 9 to be supported and guided by the trolley guide rail 2. The front trolley 8 has a passive protrusion 18 that can be freely engaged with and disengaged from the transmission protrusion 17 from the trolley drive device 7 so as to be movable up and down, and has an operating lever 19 attached to the front so as to be swingable up and down via a horizontal pin. It has been extended to The rear end of the operating lever 19 and the lower end of the passive protrusion 18 are connected by a pin, so that when the operating lever 19 moves upward, the passive protrusion 18 descends. Normally, the passive protrusion 18 is raised by the biasing weight on the distal end side of the operating lever 19. Furthermore, the front trolley 8 has a hold protrusion 20 located behind the passive protrusion 18 . This hold protrusion 2
0 is connected so as to be able to swing back and forth, and normally, the upper end thereof is biased by a weight so as to enter into the moving path of the transmission projection 17. Other rear trolley 9
A cam tail 21 for moving the operating lever 19 upward extends rearward. The conveyed object support device 6 is provided to the trolley device 5 so as to be freely pivotable around a vertical axis 26 via a pivot device 25 .
That is, as shown in FIGS. 1 to 3, a vertical shaft 27 is vertically disposed from the connecting frame 12, and this vertical shaft 2
A cylindrical body 28 is fitted onto the cylindrical body 7 so that it can only rotate freely around the vertical axis 26. A disk-shaped turning member 29 is fitted and fixed to the middle part of the cylinder 28,
Four roller-shaped upper abutted members 30 are provided at 90-degree intervals on the upper part of the rotating member 29, and four roller-shaped lower abutted members 31 are provided at 90-degree intervals on the lower part.
There are several. At this time, the upper abutted members 30 group and the lower abutted members 31 group are relatively 60 degrees in the circumferential direction (30 degrees when the symmetry is changed).
It is arranged in a displaced manner. Further, a locking device 32 is provided between the upper part of the cylindrical body 28 and the connecting frame 12 to lock the rotating device 25 at every 90 degrees.
That is, a disk 33 is externally fitted and fixed on the upper part of the cylinder 28, and 4 points are displaced by 90 degrees on the outer periphery of this disk 33.
A recess 34 is formed at the location. A link 36 is attached to a vertical pin 35 hanging from the connecting frame 12 so as to be able to swing left and right, and a roller 37 that can be freely fitted into and removed from the recess 34 is attached to the intermediate part of the link 36. A spring 38 is provided between the end and the connection frame 12 to bias it in the fitting direction. At this time, the locking position 39 where the roller 37 is fitted into the recess 34 is the center of the aforementioned two contact members 30, 31 at 60 degree intervals.
In other words, the positions are set to be displaced by 30 degrees. The conveyed object supporting device 6 includes an upper rod 40 in the front-rear direction, a pair of vertical rods 41 hanging from both ends of the upper rod 40, an intermediate member 42 connecting the middle of these vertical rods 41, and a lower portion. a lower rod 43 that connects the lower rods 43, upwardly directed receivers 44 provided at multiple locations on this lower rod 43, and retainers 4 provided on both vertical rods 41.
5, and a bracket 46 provided at the center of the upper rod 40 is attached via a horizontal pin 48 to a support member 47 extending vertically from the lower surface of the rotating member 29 so as to be relatively swingable. An automobile door 49, which is an example of an object to be transported, is supported on the support device 6 side by having its lower edge received by a receiver 44 and its front and rear side edges being held by a holder 45. A fulcrum roller 5 is attached to the center of the lower rod 43 in the longitudinal direction, which is the lower part of the support device 6, via a bracket 50.
1 is attached, and this fulcrum roller 51 is positioned on the vertical axis 26 and can freely rotate. Further, at both longitudinal ends of the lower rod 43, anti-swing rollers 5 are installed via brackets 52A and 52B, respectively.
3A, 53B are attached, and these anti-runout rollers 53A, 53B are located at positions shifted from front to back and left and right with respect to the vertical axis 26, and the fulcrum roller 5
It can freely rotate at a position above 1. Figure 1,
As shown in FIGS. 2 and 5, the vibration prevention roller 5 is
Two rows of side guide rails (an example of anti-shake rails) 55 and 56 are provided to guide the guides 3A and 53B. These side guide rails 55 and 56 each consist of a pair of left and right rail portions, and are each fixed to a common machine frame 57. and constant path 4
A predetermined location inside is a turning place 58, and in this turning place 58, the side guide rail 5
5 and 56, and a center guide rail (an example of a fulcrum rail) 59 is provided to guide the fulcrum roller 51 while filling the missing portions. This center guide rail 59 also consists of a pair of left and right rail portions, and is supported by the machine frame 57. As shown in FIGS. 2 to 4, the turning location 58 or other side guide rails 55, 5
6 is provided with either an upper receiving member 60 to which the upper abutted member 30 can freely abut, or a lower receiving member 61 to which the lower abutted member 31 can freely abut. Ru.

The operation of the above embodiment will be explained below.

Normally, the trolley device 5 travels when the transmission protrusion 17 engages with the passive protrusion 18 . In the working path portion of the constant path 4, the pair of front and rear shake prevention rollers 53A and 53B are guided by one side guide rail 55, so that the two lower points of the conveyed object support device 6 are guided. Therefore, this conveyed object support device 6 moves without swinging from side to side. As a result, this door 49 can be transported stably,
Processing work for the door 49 can be performed smoothly and accurately. At this time, in the locking device 32, the upper rod 40 is along the fixed path 4 as shown in FIG. 3, and the roller 37 is elastically fitted into one recess 34 and locked. When the shake prevention rollers 53A and 53B reach the end of the side guide rail 55 as shown by the phantom line A in FIG. 5, the fulcrum roller 51 is guided by the center guide rail 59 as shown by the phantom line B. As shown in the solid line in FIG. 5, the vibration prevention roller 53A,
53B comes off from the side guide rail 55. As a result, the conveyed object support device 6 enters the turning place 58. Next, the worker applies a turning force to the conveyed object support device 6, causing the trolley device 5 to turn around the vertical axis 26. At that time, the fulcrum roller 51 located on the vertical axis 26 is moved to the center guide rail 5.
9, the conveyed object support device 6 can pivot around the vertical axis 26 without shaking from side to side, using the vertical axis 27 and the fulcrum roller 51 as fulcrums. Become. This results in the second
As shown in the imaginary line in the figure, the door 49 can be rotated 180 degrees to change its orientation, and as shown in the phantom line C in FIG. let During such turning, various processing operations can be performed on the door 49 at this turning place 58. Furthermore, when turning, the locking device 32 locks the concave portion 3 as the disk 33 rotates, as shown in FIG.
4, the link 36 swings outward against the spring 38 to automatically release the lock, and another recess 34 faces the roller 37, causing the link 36 to swing outward against the spring 38. , the roller 37 is fitted by the force of the spring 38, and is automatically locked again. After turning 180 degrees and moving, the anti-shake rollers 53A and 53B are guided by the other side guide rail 56 as shown in the imaginary line D in FIG.
1 comes off the center guide rail 59.

In the above example, the turning is done manually by the worker.
This means that the receiving member 60 is placed at a predetermined location in the fixed path 4.
61, this can be done automatically using the running force. That is, when the upper receiving member 60 is provided as shown by the solid line in FIG.
One upper abutted member 30 displaced by 60 degrees comes into contact with this upper receiving member 60 and then travels, thereby automatically applying rotational force to the disc 33.
As shown in FIG. 4, the conveyed object support device 6 rotates around the vertical axis 26 via the disk 33.
When the disk 33 rotates 90 degrees via the upper abutted member 30, the inner end action range 6 of the upper receiving member 60
2, the upper abutted member 30 comes off inward, preventing further rotation and locking device 3.
2 will come into play. This makes it possible to change the orientation of the transported object support device 6, which is long in the front-rear direction, so that it is longer in the left-right direction, thereby shortening the length occupied in the storage path in the transport direction. In a transportation mode such as a storage route, the side guide rails 55 and 56 are not required at all, and the center guide rail 59 may or may not be provided. Note that when rotating the conveyed object support device 6 by 180 degrees, two upper receiving members 60 may be disposed at a predetermined interval. Further, as shown by the imaginary lines in FIGS. 3 and 4, a lower receiving member 61 is provided, and this lower receiving member 6
When the lower abutted member 31 is applied to 1,
The disk 33 and the like can be rotated in a direction opposite to that described above.

In the above description, in FIG. 5, the guide is guided by one side guide rail 55, turned 180 degrees, and then guided by the other guide rail 56; It may be guided by one guide rail 55. Furthermore, when turning only on one side at one turning place 58, as shown by solid lines or imaginary lines in FIG. Only 55 and 56 may be provided.

In addition, when processing work is performed while turning at the turning place 58, the guide is guided by one side guide rail 55 as shown in FIG.
5, the other side guide rail 56 can be omitted.

Effects of the invention According to the invention with the above configuration, by guiding the plurality of anti-runout rollers with the anti-runout rail,
The support device for the transported object is guided at a plurality of points at the bottom, so that normal transport can be performed without shaking. Then, remove the anti-runout roller from the anti-runout rail in the missing part, and
By guiding the fulcrum roller with the fulcrum rail, the support device can be positioned at two points above and below the vertical axis, and turning around the vertical axis relative to the moving object may cause shaking or sagging. This can be done smoothly without any hassle. In this way, although the structure is simple, the rotation can be performed smoothly and stably at all times even when the conveyance is stopped. In addition, by vertically displacing the prevention rollers and fulcrum rollers, as well as the shake prevention rails and fulcrum rails, it is possible to switch between normal conveyance without shaking and turning without shaking or bending.
This can be done smoothly and automatically.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with Fig. 1 being a partially cutaway side view, Fig. 2 being a rear view, Figs. FIGS. 6 and 7 are plan views showing other examples of the turning action. DESCRIPTION OF SYMBOLS 1... Hanging conveyance device, 2... Trolley guide rail, 4... Fixed path, 5... Trolley device (moving body), 6... Transported object support device, 7... Trolley drive device, 12... ... Connection frame, 17 ... Transmission projection, 18 ... Passive projection, 25 ... Swivel device, 26
... Vertical axis center, 27 ... Vertical axis, 28 ... Cylindrical body, 29
...Swivel member, 30... Upper abutted member, 31...
...lower abutted member, 32...lock device, 43...
...Lower rod, 49...Door (object to be transported), 51...
Fulcrum roller, 53A, 53B...Roller for preventing runout, 55, 56...Side guide rail, 58
... Turning place, 59 ... Center guide rail,
60... Upper receiving member, 61... Lower receiving member,
62... Inner end action range.

Claims (1)

[Scope of utility model registration request] A support device for the conveyed object is provided on a movable body that can freely travel guided by the main rail so as to be able to rotate around the vertical axis, and a fulcrum roller located on the vertical axis is provided at the bottom of the support device. , a plurality of anti-runout rollers are provided at positions apart from the vertical axis and above the fulcrum roller, and an anti-runout rail for guiding these anti-runout rollers is provided on the main rail. The anti-sway rail is arranged along the lower part of the main rail and is removed at the turning place, and a fulcrum rail for guiding the fulcrum roller is placed in the removed part along the lower part of the main rail to prevent it from swinging. A suspended conveyance device characterized in that it is disposed below a rail.