JPH0644908Y2 - Vertical transport device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical transport device, and more particularly to a vertical transport device that always transports a transported object while keeping it horizontal.

2. Description of the Related Art Conventionally, there is no vertical transport device developed for roll box pallets, and a vertical transport device for a case, which has a structure of four chains, is used in a large size. In addition, such a vertical transport device is roughly classified into a so-called C-type one in which a loading / unloading port for loading / unloading a transported item is on the same side, and a Z-type in the other side.

However, in the case of such a vertical transport device for a case, since casters are attached to the bottom surface of a roll box pallet, a caster is provided on the luggage rack to raise the casters. To receive the bottom surface of the pallet, and the chain conveyor and drive roller conveyor are used as the feeder conveyor, so the structure is complicated.
The capacity is low due to the large rack pitch, which is C due to the mechanical structure.
The mold and Z type are separate devices, there is no one for both C type and Z type, 1 type / min for C type, 2 types / for Z type
Minutes are the limit. Furthermore, since the transfer portion from the feeder conveyor to the vertical transport device is distant, the transported object becomes unstable, and in the case of a single load, it falls over. There is also a reciprocating type using a lifter or the like, but there is a problem in that the capacity lowers as the lifting height increases, and the bottom of the roll box pallet needs to be flattened with an iron plate or the like.

Further, in view of these points, a pair of endless drive chains hung on upper and lower sprockets on both sides of a vertical frame at an entrance and an exit of an article provided on the upper side and the lower side of the device. , A plurality of suspension shafts horizontally connected between the drive chains on both sides, a cage suspended from the suspension shaft, a guide roller for guiding the cage, and a guide for guiding the guide roller. A vertical transfer device consisting of a guide device equipped with rails has also been proposed (Japanese Patent Publication No.
47-4253).

However, such cages require a space between each other in order to hang them from the suspension shaft, and the suspension shafts that are connected due to uneven load distribution and bending of the drive chain are rotated, resulting in stability in the horizontal direction. There was a drawback that it lacked.

Therefore, it is an object of the present invention to provide a vertical transfer device which can arrange a large number of support bases at narrow intervals and is excellent in stability in the horizontal direction.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is provided with a fork for supplying and taking out a conveyed object, and an inlet and a conveyer for the conveyed object provided on the upper side and the lower side of the apparatus. An outlet, a pair of endless drive chains hung on the upper and lower sprockets on both sides of the vertical frame, and a plurality of support bases horizontally connected to the drive chains on both sides by their connecting portions,
In a vertical conveyance device including a guide roller for maintaining and guiding the support base horizontally and a guide device having a guide rail for guiding the guide roller, the guide roller is provided in a connecting portion of the support base. A support member vertically provided at both ends is rotatably supported by a long shaft and a short shaft which are vertically spaced apart from the connecting portion by a predetermined distance and are attached to the drive chain. It is characterized in that the tracks are the same and are arranged laterally offset from them by a predetermined distance, and are bifurcated at a curved portion corresponding to the sprocket position.

The long axis and the short axis are attached to the support members that are vertically provided at both ends of the connection section of the support base, and the long axis and the short axis are attached to the connection section with a predetermined distance to the side and are vertically spaced from each other. The guide rail for rotatably supporting the guide roller has the same track as the drive chain and is displaced laterally by a predetermined distance, that is, a distance corresponding to the distance between the connecting portion and the guide roller. Since the support base is connected to the drive chain at a connecting portion and is separated from the connecting portion by a predetermined distance, the supporting member of the supporting member is divided into two sections at the curved portion corresponding to the sprocket position. Since it is supported by the three points of the long axis and short axis guide rollers that are attached at intervals in the vertical direction, it is possible that the load on the support base is biased or the drive chain of the connecting portion bends. Even if there is, it will not be affected and will not tilt forward or backward. Further, since the guide rail is branched into two sections at the curved portion corresponding to the position of the sprocket, the long axis guide roller and the short axis guide roller can be guided by the branched guide rails at the curved section, respectively. Can keep its level.

Other objects, features and advantages of the present invention will be apparent from the detailed description below with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the vertical transport device of the present invention is shown in FIGS. 1 and 2 for a C-type roll box pallet, for example. As shown in the figure, the vertical conveyor of the present invention has a pair of endless drive chains 11 hung on a plurality of upper and lower sprockets 12 provided on both sides of a frame 2, one of which is an electric motor. 3 is driven. A fork 14 for feeding a conveyed product is provided at a carry-in port 5 for feeding the conveyed product A on the lower side of the vertical conveying device, and a for-delivery outlet 6 for taking out the conveyed product A on the upper side is used for taking out the conveyed product. A fork 15 is provided. The carry-in port 5 and the carry-out port 6 for the transported article A are on the same side,
Alternatively, it may be provided on either side of the opposite side, or on either side above or below. A support table 16 for carrying and supporting the object A is connected to the pair of drive chains 11 at about the center.

In order to always guide and convey the conveyed object A in a horizontal state, it has the same track as that of the drive chain 11 and is arranged laterally (left side in the figure) by a predetermined distance from the drive chain 11. , A guide rail 21 that branches into two sections 22 and 23 at a curved portion corresponding to the position of the sprocket 12, and both ends of a connecting pin 26 that is a connecting portion of the support 16 to be guided along the guide rail 21. A long shaft 28 attached to a supporting member 27 provided vertically to the connecting pin 26 at a predetermined distance, that is, at a distance apart from the drive chain 11 by which the guide rail 21 is laterally displaced and is vertically spaced. And short axis 29
A guide device 17 including guide rollers 24, 25 rotatably supported by the guide device 17 is provided.

As shown in FIGS. 3 to 6, the support base 16 is composed of, for example, a fork member having an appropriate shape which serves as a pallet support base, and is connected to the drive chain 11 by a connecting pin 26. A support member 27 is attached to an end portion of the connecting pin 26, and guide rollers 24 and 25 are rotatably arranged vertically on one side of the support member 27 via roller shafts 28 and 29 having different lengths. Installed at intervals.

Guide rails 2 for guiding the guide rollers 24, 25 supported by a long shaft 28 and a short shaft 29 provided on a supporting member vertically attached to both ends of a connecting pin 26 which is a connecting portion of the supporting base 16.
1 is arranged laterally offset from the drive chain 11 by a predetermined distance in the vertical direction, but in the curved portion corresponding to the position of the sprocket 12 of the drive chain 11, two guide rails 22, 23 are branched. And each drive chain 1
The same orbit as in 1 is drawn, and the distance between them matches the distance between the guide rollers 24, 25. Therefore, the guide rollers 24 and 25 supported by the support member 27 are guided and run along the rail members 22 and 23 while maintaining a constant state without changing the direction of the support member 27, and have the same shape as the drive chain 11. It is clear to draw a trajectory. Therefore, the support base 16 drives the drive chain.
It is supported and guided by a connecting pin 26 connected to 11, and is also guided by two guide rollers 24, 25, ie 3
Since the support member 27 guided by the points is always driven in the same direction, the support base 16 is always kept horizontal.

A drive chain 11 for driving the support base 16 is driven by a sprocket 12 for driving which is driven by an electric motor 3 provided in the lower portion of the frame 2 and capable of switching between forward and reverse rotation.

In order to carry in the transported material A to be placed on the support base 16 at the carry-in port 5 and carry it out at the carry-out port 6, extendable forks 14 and 15 are provided at the carry-in port 5 and the carry-out port 6. There is.

As shown in FIGS. 7, 8 and 9, the forks 14 and 15 provided at the carry-in port 5 and the carry-out port 6 have the same structure and are vertically and horizontally expandable and contractible to receive the pallet of the conveyed object A 31. , First and second intermediate members 32, 33, fork body 35, mount 36, fluid actuating device 37, and telescopic actuating mechanism.
It is composed of 38 and. The receiving member 31 can slide along the rail 44 of the first intermediate member 32 via the slide bearing 41, and the first intermediate member 32 can slide along the rail 45 of the second intermediate member 33 via the slide bearing 42. The second intermediate member 33 is mounted on the fork body 35 via the slurad bearing 43.
The fork main body 35 can move up and down along the pedestal 36 via the front and rear rollers 48, and is supported by the pedestal 36 via the pair of arms 51. The expansion / contraction mechanism 38 includes a sprocket 53, a chain 54, and racks 55 and 57.
And gears 56, 58 and a pair of sprockets 61, 62 and chain
It is composed of 63 and an electric motor 64. The receiving member 31 is slid by a chain 54 mounted on a sprocket 53 driven by a motor provided in the first intermediate member 32, and the first intermediate member 32 is a gear of the second intermediate member 33 via a rack 55.
The second intermediate member 33 is slid by the gear 58 of the fork main body 35 via the rack 57. One end of an arm 51 for moving the fork main body 35 up and down is fixed to the pedestal 36, and a roller 66 that engages with the long groove 65 of the fork main body 35 is provided at the other end, and the arm 67 is connected to the rod 67. The piston rod 69 of the fluid actuating device 37 is connected.

Therefore, the operation of the fluid actuator 37 causes the piston rod to
69 is extended, the arm 51 is pivoted, and the roller 66 is extended into the long groove 65.
The fork main body 35 is slid along and the roller 48 causes the fork main body 35 to rise along the pedestal 36 and lift the receiving member 31. Also,
The extension of the receiving member 31 begins with the electric motor 64 on the fork body 35.
Operation causes the gear 58 to rotate via the sprockets 61, 62 and the chain 63, and the second intermediate member to move via the rack 57.
33 is moved, which causes the first intermediate member 32 to be moved via the rack 55 and the gear 56, and the receiving member 31 to be moved by the sprocket 53 and the chain 54.

In the vertical transfer device of the present invention configured as described above, the roll box pallet transferred to the transfer position on the front side of the fork 14 at the carry-in port 5 by the electric trolley or the operator, or the articles stacked on the pallet, etc. When the article A arrives at this transfer position, it is detected by the photoelectric tube, the proximity switch or the limit switch and a signal is sent to the computer forming the control device so that the computer moves to the transfer position on the fork 14. A command is issued and first the electric motor 64
Is operated, the receiving member 31 of the fork 14 is horizontally moved rearward toward the transfer position, and is inserted into the bottom portion of the conveyed object A, and then the fork main body is operated by the operation of the fluid operation device 37.
35 is lifted, so that the wheels attached to the bottom of the load A are lifted off the floor so that they can move horizontally. Next, in this state, the support table 16 which is the pallet receiving table of the vertical transfer device on which the transferred object A is to be transferred is moved by the fork 14
After confirming that the fork 14 has passed the level of lateral movement of the fork 14, the fork 14 is driven by the operation of the electric motor 64 through the sprockets 62, 61, chain 63, gear 58, rack 57, gear 56, rack 55, sprocket 53, chain 54. It moves forward to the standby position at the back of the carry-in port 5 and waits for the support base 16 to rise and pick up the conveyed object A. Support for receiving pallets
A sensor is preferably provided at 16 or the standby position. A support 16 on which the transported object A is driven by the drive chain 11.
When this state is transferred to the computer, this state is sent to the computer as a signal and a command is issued from the computer to the fork 14, before the next support base 16 passes the level of lateral movement of the fork 14 on the front side of the vertical transport device. Then, the fork 14 returns to the standby position and waits for the arrival of the next conveyed product A.

Such an operation can also be performed by a manual operation by an operator. In this case, when the conveyed object A is conveyed to the transfer position to the fork 14, the operator pushes the operation button to move the fork 14 in place. It is also possible to move it to the bottom of the conveyed article A as described above, lift it, and operate it in the same manner as the above-mentioned operation.

In this way, the support base 16 that has received the transported object A from the fork 14
Is lifted by the rail mechanism that keeps the horizontal state and the drive chain 11, passes through the carry-out level on the back side of the vertical transport device, and then the curved rail also descends to the carry-out level on the front side while it is in the horizontal state. . The fork 15 has already entered the carry-out port 6 and is waiting, and scoops down the conveyed article A.

The waiting fork 15 is raised and advanced in advance before the conveyed article A placed on the support table 16 to be transferred reaches the front exit level, and stands by. The fork 15 having completed the transfer of the transferred article A is moved to a predetermined position for returning to the electric carriage while the next transferred object A descends and does not interfere with the transferred article A that has been completely transferred. Then fork 15
After moving to a predetermined position, will move down, move away from the bottom of the pallet of the conveyed product A, and move to the transfer operation of the next conveyed product.

Effect of the Invention According to the present invention, since the support members vertically provided at both ends of the connection portion of the support base are guided by the connection portion and the two guide rollers at three points, the support members always move in the same direction. Since the orientation, and consequently the orientation of the support base, does not change, the drive chain can be driven either forward or reverse, and even if the load on the support base is biased or the drive chain bends Is reliably kept horizontal. Therefore, the loading / unloading port of the transported object can be appropriately provided on either the left or right side or the upper or lower side, and it can be a vertical transporting device for both C type and Z type, and the pitch between the pallet support bases can be increased. Since it can be determined based on the height of the transported object, high performance can be obtained, and the guide device formed by two guide rollers that travel along the guide rail composed of two rail members at the curved portion can be reliably used. In addition, the support base can always be operated in a horizontal state at a high speed, the structure is simple and the noise can be reduced, and the loading / unloading port of the conveyed goods can be provided on both the left and right sides and the upper and lower sides in a multi-story manner. It is possible to obtain effects such as

[Brief description of drawings]

FIG. 1 is a schematic side view of an embodiment of the vertical transport device of the present invention. FIG. 2 is a front view, FIG. 3 is an enlarged partial side view of the upper portion, and FIG. 4 is an enlarged partial front view of the upper portion. FIG. 6 is an enlarged partial plan view, FIG. 6 is an enlarged partial plan cross-sectional view of a support for conveying goods, FIG. 7 is a side view of a fork, FIG. 8 is a plan view, and FIG. 9 is a front view. In the figure, 2: Frame, 3: Electric motor, 5: Carrying port, 6: Carrying port, 1
1: chain, 12: sprocket, 14, 15: fork, 16: support stand, 17: guide device, 22 and 23: rail member, 24, 25: guide roller, 26: connecting pin, 31: receiving member, 32, 33 ...: Intermediate member, 35: Fork main body, 36: Frame, 37: Fluid actuating device, 38: Drive device, 41, 42, 43: Slide bearing, 4
5, 46: Rail member, 48: Roller, 53, 61, 62: Sprocket, 54, 63: Chain, 55, 57: Rack, 56, 58: Gear, 65:
Long groove, 66: Laura.

Claims (1)

[Scope of utility model registration request] 1. A loading and unloading fork of a transported object, which is provided on an upper side and a lower side of the apparatus, and which is hung on upper and lower sprockets on both sides of a vertical frame. A pair of endless drive chains,
A plurality of support bases horizontally connected to the drive chains on both sides by the connecting portions, a guide roller for maintaining and supporting the support bases horizontally, and a guide rail for guiding the guide rollers are provided. And a guide device, the guide roller is attached to a supporting member vertically provided at both ends of the connecting portion of the support base, and is vertically spaced apart from the connecting portion by a predetermined distance. The guide rail is rotatably supported by a long axis and a short axis, and the guide rail has the same track as the drive chain and is laterally displaced from the drive chain by a predetermined distance. The guide rail has a curved portion corresponding to a sprocket position. A vertical transport device that is branched into strips.