JP3304695B2 - Conveyor frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor frame used for a chain conveyor used in a place where dust is disliked.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 7 and 8, for example, a hollow portion 74 is formed in a frame body 73 of a pair of left and right side frames 72 of a chain conveyor 71 in a longitudinal direction. The longitudinal section of the main body 73 is formed in a quadrangular shape. Further, a dovetail groove 75 for attaching an attached device is formed in each of the upper and lower portions and both side portions of the frame body 73.

A motor is provided at one end of the frame body 73.
A drive sprocket 77 driven by 76 is provided,
A driven sprocket 78 is provided at the other end. A chain 79 is wound between the driving sprocket 77 and the driven sprocket 78. Transfer path 80 of chain 79
Are formed above the frame body 73, and the return path 81 of the chain 79 is formed in the hollow portion 74. Further, a chain guide 86 for guiding the chain 79 of the transport movement path 80 is fitted in the dovetail groove 75 on the upper part of the frame main body 73.

[0004] A pair of left and right side frames 72 are connected by a connection frame 82. A duct 83 is attached to the connecting frame 82 in the front-rear direction, and the duct 83 accommodates a plurality of cables 84 for transmitting and receiving control signals and the like of the chain conveyor 71.

[0005]

However, in the above-described conventional type, the upper end of the frame body 73 of the side frame 72 is formed as a flat surface 85 and the dovetail groove 75 is formed on the side surface. Chain moving along path 80
If dust falls from the 79, etc., this dust
There is a problem that the dust easily accumulates on the upper end of the dovetail, and that the dust easily enters the dovetail groove 75 on the upper side.

A duct for accommodating the cable 84
Since it is necessary to provide the 83 separately, the number of parts constituting the conveyor 71 increases, and therefore, there is a problem that it takes time to transport to the installation location and to perform the installation work.

[0007] Therefore, an object of the present invention is to make it difficult for dust to accumulate on the upper end of the frame body, and an invention according to claim 4 is to house a cable in the frame body and form a duct. It is intended to be unnecessary.

[0008]

According to a first aspect of the present invention, a driving sprocket driven by a driving device is provided at one end of a frame body. a driven sprocket provided on the other end, and MakiCho the chain between these drive sprocket and the driven sprocket, the upper end of the frame body, Yamagata
And a slope that slopes down on both sides.
The chain is supported above the inclined surface .

According to this, since the upper end of the frame main body is formed as an inclined surface whose both sides are inclined downward, it is difficult for dust to accumulate on the upper end of the frame main body. Even if a small amount of dust accumulates on the inclined surface, the dust can be easily swept down along the inclined surface using a brush or the like, so that cleaning can be performed easily.

According to a second aspect of the present invention, a chain transfer path is formed above the frame body. According to this, when dust falls from the chain that moves along the transport movement path, the dust is difficult to accumulate on the upper end of the frame main body.

According to a third aspect of the present invention, the projecting portions projecting outward from both side surfaces are formed on both side edges of the upper end of the frame main body. According to this, since the projecting portion is provided, it is difficult for dust to enter into the dovetail groove formed on the side surface of the frame main body.

According to a fourth aspect of the present invention, a wiring space for accommodating a cable is formed in the frame main body in the length direction. According to this, since the cables can be stored in the frame main body by storing the cables in the wiring space, a cable storing duct can be unnecessary.

According to a fifth aspect of the present invention, a chain transfer path is formed above the frame main body, and a chain storage space for storing the chain return path is formed in the frame main body. The space and the wiring space are separated by a partition wall.

According to this, since the chain storage space and the wiring space are partitioned by the partition wall, the problem that the cable stored in the frame body comes into contact with the chain moving on the return path and is damaged or entangled is prevented. it can. According to the invention described in claim 6, the frame body has
One partition wall that separates the drive sprocket from the wiring space
And the other partition between the driven sprocket and the wiring space
A cutting wall is provided. According to this,
The cable housed in the wire space is
Damaged or entrained by contact with a moving sprocket
Troubles can be prevented.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 6, reference numeral 1 denotes an automatic warehouse, which includes a pair of shelves 2 and a stacker crane 4 that can travel along a traveling path 3 formed between the two shelves 2. A cargo handling place 5 is located outside the end of each shelf 2.
The handling site 5 is provided with a chain conveyor 6 for handling and a lift device 7 for transferring a load between the stacker crane 4 and the chain conveyor 6.

As shown in FIG. 3, the chain conveyor 6
The frame portion 8 is composed of a pair of left and right side frames 9 and a connecting frame 10 connecting the both side frames 9, and is supported on the floor surface by a plurality of stands 11 suspended from each side frame 9. ing. As shown in FIG. 2, at one end of the frame main body 12 of each side frame 9, a driving sprocket 14 that is driven to rotate by a motor 13 (an example of a driving device) is provided, and at the other end, a driven sprocket 15 is provided. A chain 16 is wound between the driving sprocket 14 and the driven sprocket 15.
Further, a screw take-up mechanism 18 for adjusting the tension of the chain 16 by moving the driven sprocket 15 in the direction of the transport path 17 is provided at the other end of the frame main body 12.

As shown in FIGS. 1, 4 and 5, the frame main body 12 has a hollow interior and a rectangular cross section. The driving sprocket 14 and the driven sprocket 15 are respectively provided in the ends of the frame main body 12, and the upper ends of both sprockets 14 and 15 project above the frame main body 12. As a result, a transfer path 19 for the chain 16 is formed above the frame main body 12.

As shown in FIG. 1, the inside of the frame body 12 is vertically divided by a horizontal partition wall 22 provided between a pair of left and right side walls 21a and 21b.
Above 22, a wiring space 24 in which a cable 23 can be stored is formed in the length direction (front-back direction). Also, the horizontal partition 22
On the lower side, a chain storage space 26 that can store the return path 25 of the chain 16 is formed over the entire length. A chain rail 27 is attached to the chain storage space 26 in the front-rear direction.

As shown in FIGS. 2, 4 and 5, inside the frame body 12, one vertical partition wall 28 for partitioning the drive sprocket 14 and one end of the wiring space 24, and the driven sprocket The other vertical partition wall 29 that partitions the 15 and the other end of the wiring space 24 is provided. In addition, openings 30 are formed at a plurality of locations on the inner side wall 21a of the frame main body 12 to allow the cable 23 to enter and exit the wiring space 24.

As shown in FIG. 1, side dovetails 33 are formed in the upper and lower portions of both sides of the frame main body 12, and lower dovetails 34 are formed in the lower end of the frame main body 12. An upper dovetail groove 35 is formed at the center of the upper end of the twelve. These dovetails 33, 34, 35 are in the longitudinal direction (front-back direction)
The stand 11 is connected and fixed to the lower dovetail groove 34 via a bolt 36 and a tap plate 37. 4 and 5, the motor 13 and the screw take-up mechanism 18 are connected and fixed to the side dovetail groove 33 via bolts 38 and tap plates 39, respectively. As shown in FIG. 1, a chain guide 40 is fitted into the upper dovetail groove 35. Ancillary devices such as a load detecting device (not shown) and a pallet guide member (not shown) are also attached to the side dovetail groove 33.

The upper wall 41 of the frame body 12 is formed in a mountain shape, whereby the upper surface of the upper wall 41 is formed as an inclined surface 42 whose both sides are inclined downward. On both side edges of the upper wall 41, projecting portions 43 projecting outward from both side surfaces of the frame main body 12 are formed. As shown in FIGS. 4 and 5, the overhang portion 43 is formed excluding the inner end of the frame body 12 in order to avoid interference with the motor 13 and the screw take-up mechanism 18.

The operation of the above configuration will be described below.
As shown in FIG. 1, the chain 16 that moves along the transport movement path 19
Even when dust such as abrasion powder falls when the slidable contact with the chain guide 40, the upper end surface of the side frame 9 is formed as the inclined surface 42 that is inclined on both sides downward. It is difficult for dust to accumulate on the end face. Further, even if a small amount of dust accumulates on the inclined surface 42, dust can be easily swept down along the inclined surface 42 using a brush or the like,
Easy cleaning. Further, since the overhang portion 43 protrudes outward from both side surfaces of the frame body 12, dust falling from above becomes difficult to enter the upper side dovetail groove 33 and accumulates in the upper side dovetail groove 33. The amount of dust is reduced. For this reason, it is suitable for use in an environment that dislikes dust.

Further, since the cable 23 is housed in the wiring space 24, the cable 23 can be housed inside the side frame 9, so that a wiring duct is not required. For this reason, the number of parts constituting the chain conveyor 6 is reduced, and the transportation to the installation location and the installation work can be shortened. Further, the space between the left and right side frames 9 can be effectively used, and for example, the lift device 7 and other devices can be arranged between the both side frames 9 as shown in FIG.

Since the wiring space 24 and the chain storage space 26 are separated by the horizontal partition wall 22, the cable 23 stored in the wiring space 24 comes into contact with the chain 16 in the chain storage space 26 and is damaged. Problems such as dripping and being caught can be prevented. Further, as shown in FIG. 2, the wiring space 24 and the driving sprocket 14 are partitioned by one vertical partition wall 28, and the wiring space 24 and the driven sprocket 15 are separated by the other vertical partition wall 29.
Therefore, it is possible to prevent the cable 23 housed in the wiring space 24 from contacting the drive sprocket 14 and the driven sprocket 15 and being damaged or being caught.

As shown in FIGS. 2 and 3, the cable 23 housed in the wiring space 24 is pulled out from the opening 30 to the outside of the frame main body 12, so that the motor 13 and the control device are controlled.
Can be easily connected to 44 or other accessories.

As shown in FIG. 6, when the stacker crane 4 takes out the load from the shelf 2 and carries it out to the cargo handling place 5 at the time of unloading the load, the lift device 7 rises and the stacker crane 4
Delivers the load to the lifting device 7. Thereafter, the lift device 7 descends and delivers the load to the chain conveyor 6. Then, as shown in FIG. 3, the load is conveyed from one end of the chain conveyor 6 to the other end along the conveyance path 17 by driving both motors 13 and rotating both chains 16. It is received from the end by a forklift or an unmanned transport cart. In addition, the loading of the load is performed in the reverse order of the above-described unloading.

[0027]

As described above, according to the first aspect of the present invention, since the upper end of the frame main body is formed as an inclined surface whose both sides are inclined downward, dust does not easily accumulate on the upper end of the frame main body. Become. Even if a small amount of dust accumulates on the inclined surface, the dust can be easily swept down along the inclined surface using a brush or the like, so that cleaning can be performed easily.

According to the second aspect of the present invention, when dust falls from the chain moving along the transport path, the dust hardly accumulates on the upper end of the frame body. Claim 3
According to the invention described above, since the overhanging portion is provided, it becomes difficult for dust to enter the dovetail groove formed on the side surface of the frame main body.

According to the fourth aspect of the present invention, since the cables can be stored in the frame main body by storing the cables in the wiring space, a cable storing duct can be eliminated. Therefore, the number of parts constituting the conveyor is reduced, and the transportation to the installation location and the installation work can be shortened.

According to the fifth aspect of the present invention, since the chain storage space and the wiring space are partitioned by the partition wall, the cable stored in the frame main body comes into contact with the chain moving on the return path and is damaged. Problems such as dripping and being caught can be prevented. Further, according to the invention of claim 6,
If the cable stored in the wiring space is
Damaged or entrained by contact with a pilot or driven sprocket
Can be prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a conveyor frame according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of the conveyor frame.

FIG. 3 is a perspective view of a chain conveyor using the conveyor frame.

FIG. 4 is a vertical sectional view of a motor mounting portion of the conveyor frame.

FIG. 5 is a longitudinal sectional view of a take-up mechanism mounting portion of the conveyor frame.

FIG. 6 is a schematic plan view of an automatic warehouse facility.

FIG. 7 is a longitudinal sectional view of a conveyor frame in a conventional example.

FIG. 8 is a perspective view of a chain conveyor using a conventional conveyor frame.

[Explanation of symbols]

 9 Side frame 12 Frame body 13 Motor (drive unit) 14 Drive sprocket 15 Driven sprocket 16 Chain 19 Transport path 22 Horizontal partition 23 Cable 24 Wiring space 25 Return path 26 Chain storage space 42 Slope 43 Overhang

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65G 21/06 B65G 21/22

Claims (6)

(57) [Claims] 1. A driving sprocket driven by a driving device is provided at one end of a frame main body, a driven sprocket is provided at the other end of the frame main body, and a chain is wound between the driving sprocket and the driven sprocket. , Above
Form the upper end of the frame body into a mountain shape,
The chain is inclined from the above-mentioned inclined surface.
A conveyor frame, wherein the conveyor frame is also supported upward . 2. The conveyor frame according to claim 1, wherein a chain transfer path is formed above the frame body. 3. The conveyor frame according to claim 1, wherein projecting portions projecting outward from both side surfaces are formed at both side edges of an upper end of the frame main body. 4. The conveyor frame according to claim 1, wherein a wiring space capable of accommodating a cable is formed in a length direction in the frame body. 5. A chain transfer movement path is formed above the frame main body, a chain storage space in which the chain return path is stored is formed in the frame main body, and the chain storage space is separated from the wiring space. 5. The conveyor frame according to claim 4, wherein the frame is partitioned by a wall. 6. A driving sprocket is provided in a frame body.
One partition wall that separates from the wiring space and the driven sprocket
And the other partition wall that separates the
The conveyor frame according to claim 4, wherein
M