JP2001002239A - Turntable device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a turntable main body by simplifying a structure. SOLUTION: A lifting and lowering frame 12 is arranged on the outer periphery of a fixed shaft 11. A turntable main body 6 is supported on the lifting and lowering frame 12 so as to be rotationally driven around the fixed shaft 11. An opening part 21 is provided on the lower side of each pallet 7 arranged on the turntable main body 6 so as to be freely tilted and a tilting mechanism 23 is installed. In the tilting mechanism 23, an arm member 31 is erected when a link 25 of a link member 24 is pulled down, and the pallet 7 is pushed up. A tilting driving device 22 having a hook member 33 for engaging the arm 25 is provided on one part in the circumferential direction of the lifting and lowering frame 12. After the turntable main body 6 is rotated into the arrangement in which the link 25 is received in the hook member 33, the tilting driving device 22 is retracted and then tilted together with a conveying rack loaded with the pallet 7 through the tilting mechanism 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turntable device used for sequentially changing the position of a load placed on a pallet and tilting the load at a predetermined position.

[0002]

2. Description of the Related Art Work formed by a transfer press is sequentially loaded and stored in a transfer rack, and then transferred to a next work place such as an assembly factory. The loading of the work on the transport rack is difficult if the shape of the work is complicated or if the work must be handled carefully so as not to damage it, such as in the case of a car outer panel. The work is lifted and loaded on the transport rack.

In order to carry out the work of manually loading the work on the transport rack, as shown in FIG. 5, an output conveyor 2 provided downstream of the transfer press 1 is provided.
In order to transfer the work 3 carried out by the above to the payoff table 4 and to load the work 3 from the payoff table 4 onto the transport rack 8, a disk-shaped turntable arranged near the payoff table 4 so as to be rotatable in the horizontal direction. Body 6
And a pallet 7 disposed at three circumferential positions on the upper surface of the turntable main body 6 so as to be tiltable with the outer end side as a fulcrum. The pallet 7 is placed on each pallet 7 and tilted together with the pallet 7. A turntable device 5 having a drive mechanism for tilting each of the pallets 7 independently is installed. The pallets 7 on the turntable main body 6 are provided. The pallet 7 positioned at the position facing the payoff table 4, ie, the loading position, is tilted toward the loading side so as to assume a forwardly inclined posture to incline the transport rack 8, and then the loading operation of the work 3 is manually performed. When the work 3 is fully loaded on the transport rack 8, the turntable main body 6 is rotated 120 degrees in one direction (clockwise in the drawing), and By positioning a position loading the pallet 7 transport rack 8 of empty adjacent to the side, the pallet 7
On the other hand, from the pallet 7 moved to the position downstream of the loading position in the rotation direction, the transport rack 8 containing the work 3 is removed and transported to a required location. An empty transport rack 8 is placed on the pallet 7 at the position on the upstream side in the direction.

[0004]

However, in the conventional turntable device 5 described above, a drive device for tilting the pallets 7 is provided for each pallet 7, and each drive device is installed on the turntable main body 6 and each drive device is mounted on the turntable body 6. Since the pallets 7 are configured to be individually tilted by the respective driving devices, the number of the driving devices is increased, and each drive device is installed on each of the pallets 7 on the turntable main body 6, so that the structure is improved. There is a problem that the turntable body 6 is complicated, and the production cost is increased. In addition, since the turntable body 6 is also heavy, the moment of inertia of the turntable body 6 becomes large. There is a problem that the power required for rotationally driving the motor 6 becomes large.

Therefore, the present invention can simplify the structure of the turntable body by eliminating the need for providing a drive device for tilting the pallet for each pallet on the turntable body. An object of the present invention is to provide a turntable device capable of reducing the weight of the turntable body and reducing the power required for rotationally driving the turntable body.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is intended to place a load at a plurality of positions in a circumferential direction of a turntable body which is installed so as to be rotatable in a horizontal direction. Wherein the pallet is disposed so as to be tiltable around the outer peripheral end of the pallet, and the turntable body is rotated to convey the load on the pallet. An opening having a size that allows the pallet to be inserted is provided at the position where each pallet is provided on the turntable body, and the outer end side of each pallet is supported at the upper position in each opening so as to be rotatable in the vertical direction. And, a tilt mechanism for tilting the pallet is installed at a position below each of the openings, and a tilt drive device for operating the tilt mechanism is provided at a position below one circumferential position of the turntable body. Further, the tilting mechanism is attached to the center of the turntable body so that the end of each of the radially outward and upward links of the turntable body is connected and fixed in an L-shape, and the turntable body can be rotated. A link member, a rotating shaft arranged to extend in the width direction of the pallet and attached to the turntable body, a link fixedly attached to a central portion of the rotating shaft, an end portion of the link and an upward link of the link member A link rod whose both ends are rotatably connected to a tip end of the link shaft and an arm member fixedly attached to both ends of the rotating shaft, the link member is pulled down by a radially outward link tip. By rotating the arm member via the link, the rotation shaft rotates through the link and the arm member rotates.

[0007] After rotating the turntable body so that one pallet is located above the tilting drive, the tilting drive of the tilting mechanism disposed at the lower position of the pallet is used. When the radially outward link of the link member is pulled down, the pallet is tilted via the tilting mechanism, and the load placed on the pallet is tilted.

In addition, instead of providing a tilting mechanism for tilting the pallet at a position below each opening of the turntable main body, the tilting mechanism is separated from the turntable main body and installed at one position below the turntable main body, If the pallet is tilted by rotating the lever member in the vertical direction by one tilting drive device, the link mechanism is not provided at a position below each pallet in the turntable body, so that the structure is simpler. And the weight of the turntable body can be further reduced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 (a), 1 (b) and 2 show an embodiment of the turntable device according to the present invention, in which a fixed shaft extending vertically is provided at the center of the bottom surface of a pit 10 provided on a foundation 9. FIG. And a ring-shaped elevating frame 12 having a rail 13 provided on the upper surface of the pit 10 over the entire length in the circumferential direction above the foundation 9 on the outer peripheral side of the pit 10.
1. A fluid pressure cylinder 14 as an elevating device, which is horizontally disposed coaxially with the upper end 1 and has upper ends connected to lower surfaces of a plurality of (for example, eight) circumferential positions of the ring-shaped elevating frame 12.
Are installed on the upper surface of the foundation 9 respectively, and each hydraulic cylinder 1
4 are simultaneously extended and retracted to raise and lower the frame 12
Is supported so that it can be moved up and down.

On the other hand, on the lower surface of the central part of the disk-shaped turntable main body 6, the fixed shaft 1 corresponding to the fixed shaft 11 is provided.
1. A cylindrical body 15 having an inner diameter that can be fitted to the fixed shaft 1 is provided. By fitting the cylindrical body 15 to the fixed shaft 11 from above, the turntable body 6
The turntable body 6 is supported so as to be rotatable around the fixed shaft 11 and slidable up and down along the fixed shaft 11. Wheel 16 so that it can move
Attached to many places (for example, six places),
The turntable main body 6 is rotatably mounted on the rail 13 of the elevating frame 12 via.

A ring gear 17 is provided on the outer peripheral surface of the lower end portion of the cylindrical body 15 on the lower surface of the turntable body 6 over the entire length, and the ring gear 17 is provided in the vertical direction of a rotation motor 18 installed in the pit 10. The pinion 20 attached to the extending output shaft 19 is meshed, and the pinion 20 is rotated by the rotation motor 18 so that the turntable body 6 is driven to rotate integrally with the cylindrical body 15 via the ring gear 17. I do. Note that the pinion 20 has a shape that is long in the axial direction and is longer than the width of the ring gear 17, and the ring gear 17 slides up and down while the pinion 20 and the ring gear 17 are engaged. Thus, even if the turntable main body 6 moves up and down as the elevating frame 12 moves up and down, the driving force of the rotation motor 18 is transmitted to the turntable main body 6.

The turntable body 6 has a circumferential
A required opening 21 which penetrates in the vertical direction is provided at each location, and a pallet 7 for placing a transport rack 8 as a load is arranged at an upper end position in each opening 21. The outer end of each pallet 7 (the outer end of the turntable main body) is attached to the turntable main body 6 so as to be rotatable (tilted) in the vertical direction.

Further, a tilting mechanism 23 for tilting the pallet 7 is provided at a lower position in the opening 21 which is a lower position of each pallet 7. Each tilting mechanism 23
Is fixed in an L-shape by one end on the inner end side of the short link 25 facing outward in the radial direction of the turntable body 6, one end on the lower end side of the short link 26 facing upward, and the horizontal shaft 27.
An L-shaped link member 24 rotatably supported by the turntable main body 6 at a position above, a rotating shaft 28 arranged to extend in the width direction of the pallet 7 at an outer peripheral position from the link member 24, and the rotating shaft 28, a short link 29 having one end fixed to the axial center and the other end facing upward, the other end of the link 29 and the upward link 26 of the link member 24,
A link rod 30 whose both ends are rotatably attached to the upper end of the rotary shaft 28 and one end is fixedly attached to both ends of the rotating shaft 28 so that the angle is about 45 degrees with respect to the link 29. And an arm member 31 having a roller 32 attached to the other end side (tip end side) so that the roller 32 comes into contact with the lower surface of the pallet 7. Of the link member 2 by pulling the other end (tip) of the
The link 29 is rotated about the horizontal shaft 27 as a unit so that the link 29 is rotated via the link rod 30, and is rotated in the direction in which the link 29 and the fixed arm member 31 stand upright via the rotation shaft 28. The arm member 3
1, the pallet 7 is pushed up from below and tilted. The distal end of the radially outward link 25 is arranged at a position protruding below the lower surface of the turntable body 6.

On the other hand, the foundation 9 below the turntable body 6
The link member 2 is located at a predetermined location on the side, that is, at one location where the work is to be loaded on the transport rack 8 as a load.
In accordance with the trajectory of the distal end of the radially outward link 25 of FIG. 4, a tilting drive device 22 for pulling down the distal end of the link 25 and tilting the pallet 7 is provided.

The tilting driving device 22 is a hook member 3 having a required length in the circumferential direction of the turntable main body 6 in an arc shape having a radius centered on the rotation center of the turntable main body 6.
3 is a fluid pressure cylinder connected to and supported by the upper end of a piston rod 35, and is supported by a support member 34 fixed to the inner peripheral side of the elevating frame 12.

Numeral 36 denotes a bearing for receiving the upper end of the output shaft 19 of the rotation motor 18 at an upper position of the pinion 20, and extends horizontally at the upper end of a support member 37 provided to rise from the bottom of the pit 10. Is attached. Numeral 38 denotes a guide rod standing upright at the inner peripheral end of the support member 37 so as to extend in the vertical direction. To guide you.

When the work 3 is loaded on the transport rack 8 as a load placed on the pallet 7, first, the rotation motor 18 is driven to rotate the pinion 20, the ring gear 17, the cylindrical body 15 and the like. Then, the turntable body 6 is rotated to allow the pallet 7 on which the transport rack 8 on which the work is to be loaded to come to the loading position. When the pallet 7 comes to the loading position, FIG.
As shown in (b), the tip of the radially outward link 25 of the link member 24 of the tilting mechanism 23 below the pallet 7 can be received by being inserted into the hook member 33 on the lifting frame 12 side. In this state, after the rotation of the turntable main body 6 is stopped, as shown in FIG. 2, when the tilt driving device 22 is contracted and the hook member 33 is pulled down, the tip of the radially outward link 25 is pulled down. Is rotated in the counterclockwise direction in the figure together with the horizontal shaft 27, so that the link bar 30 is pushed through the link 26, the arm member 31 is raised, and the pallet 7 is tilted upward. 8 is inclined toward the work loading side so as to assume a forward inclined posture. next,
The elevating frame 1 is extended by extending each hydraulic cylinder 14.
Then, the turntable main body 6 is raised together with 2, and the height of the position of the transport rack 8 is adjusted so as to facilitate the loading operation, and the work 3 is loaded onto the transport rack 8.

When the work 3 is fully loaded on the transport rack 8, the hydraulic cylinder 14 is contracted to lower the turntable body 6 together with the elevating frame 12, and the tilt driving device 22 is extended to operate the hook member. 3
The transport rack 8 is returned to a horizontal state by raising the pallet 3 and rotating the pallet 7 downward through the tilting mechanism 23.

Next, the turntable main body 6 is rotated by 120 ° by the rotation motor 18 so that the empty transfer rack 8 is supplied to the loading position, while the pallet sent to the position downstream of the loading position in the rotation direction is rotated. Since the work 3 is loaded on the transport rack 8 on the pallet 7, the transport rack 8 is removed from the pallet 7 and transported toward the downstream process. Is mounted on the pallet 7.

Thereafter, by repeating the above procedure, the work 3 is loaded onto the transport rack 8 sequentially.

As described above, the tilting drive device 22 for tilting the pallet 7 so as to tilt the transport rack 8 at the loading position is provided only at one position below the loading position, and the lifting frame Since the pallet 7 is supported, it is not necessary to provide a tilting drive unit for each pallet 7 on the turntable body 6 as in the conventional case, and the structure is greatly simplified as compared with the conventional case. In addition, since the weight of the turntable main body 6 can be reduced, the moment of inertia of the turntable main body 6 can be reduced, and therefore, a rotation motor for driving the turntable main body 6 to rotate. 18
The one having a smaller driving force than the conventional one can be used. Further, since the hook member 33 is formed in an arc shape and is elongated in the horizontal direction, even if the stop position of the pallet 7 is slightly shifted from the loading position, the hook member 33 can be engaged with the link 25 on the pallet 7 without any trouble. The pallet 7 can be tilted.

Next, FIGS. 3 (a), (b) and 4 show another embodiment of the present invention, in which a disc-shaped lifting frame 40 is provided at the center of a pit 10A provided on a foundation 9. Are arranged horizontally, and the elevating frame 40 is
Jack 4 installed at four places in pit 10A
3 are connected to each other, and each jack 43 is connected via a shaft 42 to one elevating motor 41 as an elevating drive device.
Simultaneously raises and lowers the lifting frame 40 so that the lifting frame 40 can be raised and lowered. A fixed shaft 44 extending upward is protruded at the center of the lifting frame 40, and a circumferential shaft is provided above the outer peripheral edge. The configuration is such that rails 13 are arranged over the entire length.

On the other hand, a cylindrical body 15 having an inner diameter that can be fitted to the fixed shaft 44 is provided on the lower surface of the center of the disk-shaped turntable main body 6, and on the lower surface near the outer peripheral edge of the turntable main body 6. Is provided with wheels 16 at a plurality of locations (for example, six locations) on the circumference so as to be able to roll on the rails 13 on the elevating frame 40.
The turntable body 6 is rotatably supported on the elevating frame 40 by fitting the wheels 5 on the fixed shaft 44 and mounting the wheels 16 on the rails 13.

Further, on the outer peripheral surface of the lower end of the cylindrical body 15,
A ring gear 17 is provided.
5, the pinion 46 attached to the output section is engaged,
In addition, a rotation motor 48 installed on the foundation on the side of the elevating frame 40 is connected via a universal joint 47 to an input portion of the speed reducer 45, and the universal joint 47 is decelerated by the rotation motor 48. Machine 4
5, cylindrical body 15 via pinion 46 and ring gear 17
Are rotated to drive the turntable body 6 to rotate.

As shown in FIG.
(B) Similar to those shown in (b) and FIG. 2, required openings 21 penetrating vertically are provided at three locations in the circumferential direction, and the pallets arranged on the upper side in each of the openings 21 are provided. 7 is
The pallet 7 is attached to the pallet 7 so that it can be tilted about its outer end. The lower surface of the pallet 7 at the center in the width direction is slightly lower than the lower surface of the turntable body 6. The protrusion 49 is provided so as to perform the operation.

On the other hand, a rotary shaft 50 extending in the horizontal direction perpendicular to the radial direction is attached to one position in the circumferential direction on the upper surface of the outer peripheral edge of the elevating frame 40 corresponding to the loading position of the work 3 on the transport rack 8. Yes, at both ends of the rotating shaft 50,
Two long lever members 51 are attached in parallel inward, and pallets 7 are provided on the upper surfaces of the distal ends of both lever members 51.
A plate-like member 52 extending in an arc shape having a required radius along the track of the projection 49 provided on the lower surface is attached.
A sector gear 53 is attached to the center of the
A, the sector gear 53 of the tilting mechanism 23A is meshed with an output gear 55 attached to an output portion of a gear box 54, and the gear box 54 has an input portion which is an output of a motor 56 as a tilt driving device. As a configuration connected to the shaft,
A gear box 54, an output gear 55,
By rotating the rotating shaft 50 via the sector gear 53, the lever member 51 is rotated to rise, and the projection 49 of the pallet 7 arranged at the loading position is pushed up from below by the plate member 52. Thus, the pallet 7 is tilted.

Reference numeral 57 denotes a guide rod which is inserted into a guide hole 58 formed at a required position of the lifting frame 40 so as to guide the lifting and lowering movement of the lifting frame 40 and projects upward from the bottom surface of the pit 10A. An opening 60 provided on one side of the elevating frame 40 below the rail 13 to allow the pallet 7 to tilt is used to prevent the transport rack 8 placed on the pallet 7 from shifting.

According to the present embodiment, the rotation motor 48
After rotating the turntable body 6 to dispose the pallet 7 on which the transport rack 8 is placed at the loading position,
As shown in FIG. 4, the pallet 7 is tilted upright by driving a motor 56 to tilt the transport rack 8, and the jack 43 is extended by the raising / lowering motor 41, and the turntable main body is moved together with the lifting frame 40. 6 can be raised, as shown in FIGS.
As in the case of the embodiment shown in FIG.
The work 3 can be loaded into the work. The tilting mechanism 23A for tilting the pallet 7 includes a lever member 51.
, The structure can be made simpler, and the turntable body 6 can be further reduced in weight.

The present invention is not limited to the above embodiment. In the embodiment shown in FIGS. 1 (a) and 1 (b), the tilt driving device 22 for pulling down the hook member 33 is used. May use an electric jack or the like in place of the fluid pressure cylinder, or a tilting mechanism 2 for pushing up and tilting the pallet 7 from below.
3 may use a link mechanism of a different type from that shown in the drawings, and the embodiment shown in FIGS. 1 (a) (b) and 2 or FIGS. 3 (a) (b) and 4 The lifting drive for driving the lifting frames 12, 40 in the form of (1) and (2) can be any drive such as a drive device that expands and contracts such as a fluid pressure cylinder and an electric jack, a rack, and a drive device that moves up and down by a pinion method. And the case where the work 3 is loaded on the transport rack 8 has been described as an example. However, as a load, a workpiece other than the transport rack 8 is placed on the pallet 7 and used. Of course, various changes may be made without departing from the spirit of the present invention.

[0031]

As described above, according to the turntable device of the present invention, the load can be placed at a plurality of positions in the circumferential direction of the turntable body which is installed so as to be rotatable in the horizontal direction. In a turntable device, a pallet is disposed so as to be tiltable around an outer peripheral end of the pallet, and a turntable body is rotated to convey a load on the pallet. At each of the pallet arrangement positions of the table main body, an opening having a size that allows the pallet to be provided is provided, and the outer end side of each pallet is supported at the upper position within each of the openings so as to be rotatable vertically, In addition, a tilt mechanism for tilting the pallet is installed at a lower position of each of the openings, and a tilt drive device for operating the tilt mechanism is provided at a position below one circumferential position of the turntable body. A link member having a central portion attached to the tilting mechanism, the end portion of each of the outwardly and upwardly facing links of the turntable main body being connected to each other and fixed in an L-shape so as to be rotatable with respect to the turntable main body. A rotating shaft mounted on the turntable body so as to extend in the width direction of the pallet, a link fixedly attached to a central portion of the rotating shaft, a tip of the link and a tip of an upward link of the link member. And a link rod rotatably connected to both ends thereof, and an arm member fixedly attached to both ends of the rotating shaft, so that the distal end of the link outwardly in the radial direction can be pulled down. By rotating, the link rod and the rotation shaft are rotated via the link so that the arm member is rotated, so that the pallet is tilted. The structure the number of dynamic driving device as one can be made considerably simpler as compared with the conventional. In addition, by disposing a tilting drive device outside the turntable main body, the turntable main body can be made lightweight, whereby the moment of inertia of the turntable main body can be reduced, and the turntable main body can be rotated. An excellent effect is exhibited such that the power required for driving can be made smaller than in the past. Further, instead of providing a tilting mechanism for tilting the pallet at a lower position of each opening of the turntable main body, the tilting mechanism is separated from the turntable main body and installed at one position below the turntable main body, and one tilting operation is performed. When the pallet is tilted by rotating the lever member in the vertical direction by the driving device for use, the structure for tilting each pallet can be made simpler and the turntable body can be further This has the effect of being able to be lightweight.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a turntable device of the present invention, in which (A) is a partially cut-away schematic plan view, and (B) is a cut-away schematic side view.

FIG. 2 is an enlarged schematic side view showing an operation state of the apparatus of FIG. 1;

FIG. 3 shows another embodiment of the present invention.
Is a schematic plan view partially cut, and (b) is a schematic side view cut.

FIG. 4 is an enlarged schematic side view showing an operation state of the apparatus of FIG. 3;

FIG. 5 is a plan view schematically showing an example of a transfer press facility.

[Explanation of symbols]

 Reference Signs List 6 Turntable body 7 Pallet 8 Transport rack (load) 21 Opening 22 Tilt drive 23, 23A Tilt mechanism 24 Link member 25, 26 Link 28 Rotation axis 29 Link 30 Link rod 31 Arm member 33 Hook member 50 Rotation Shaft 51 Lever member 52 Plate member 53 Sector gear 56 Motor (tilt driving device)

Continued on the front page (72) Inventor Shigeki Narushima 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawajima Harima Heavy Industries, Ltd. Yokohama Engineering Center F-term (reference) 3F072 AA09 GD05 GE05 GG12 JA05 KB03 KB05 KB08 KB11 KB17 KB18 KB20

Claims (3)

[Claims] 1. A pallet for mounting a load at a plurality of circumferential positions of a turntable main body which is installed so as to be rotatable in a horizontal direction, and can be tilted about an outer peripheral end of the pallet. In the turntable device arranged so that the load on the pallet is conveyed by rotating the turntable main body, the pallets enter the respective pallet arrangement positions of the turntable main body. An opening having a size, an outer end of each pallet is supported at an upper position in each of the openings so as to be rotatable in a vertical direction, and the pallet is tilted to a lower position of each of the openings. A turntable device comprising a mechanism, and a tilt drive device for operating the tilt mechanism, provided at a position below one circumferential position of the turntable body. 2. A link member having a center portion attached to a turning mechanism by connecting ends of radially outward and upward links of a turntable body to be fixed in an L-shape and rotating the turntable body. A rotary shaft disposed on the turntable body so as to extend in the width direction of the pallet; a link fixedly mounted on a central portion of the rotary shaft; a tip of the link and a tip of an upward link of the link member. And a link rod rotatably connected to both ends of the link member, and an arm member fixedly attached to both ends of the rotating shaft, so that the link member can be pulled down at the tip of the radially outward link. 2. The turntable device according to claim 1, wherein the arm member is rotated by rotating the arm member via the link rod and the link by rotating the arm member. 3. Instead of providing a tilting mechanism for tilting a pallet at a position below each opening of the turntable main body, the tilting mechanism is separated from the turntable main body and installed at one position below the turntable main body, The turntable device according to claim 1, wherein the pallet is tilted by rotating the lever member in a vertical direction by one tilt drive device.