JPH0764422B2 - Spiral lifting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vertical conveyance device that conveys and transfers an object to be conveyed in the vertical direction.

[Conventional technology]

As a vertical transfer device that transfers objects to be transferred such as cardboard boxes between conveyors of different heights, a chain conveyor system in which multiple items are arranged at fixed intervals in an elevator or an endless chain that circulates vertically There are such things as a lift and a lift having an article mounting table.

[Problems to be solved by the invention]

However, most of these vertical transfer devices have to perform the transfer operation by stopping the vertical transfer device when transferring articles between the upper conveyor and the lower conveyor, and also reciprocate up and down. Since the apparatus is used for carrying only one direction, there is a large amount of wasted time, and there is a drawback that a large amount of objects cannot be efficiently and continuously carried.

Further, the vertical transfer device is generally large in scale, and there is a problem that an occupied floor area of the device is large and a facility cost of the device increases.

The present invention has been made in order to solve the above problems, and has a large transfer processing capacity for continuously transferring and vertically transferring an object to be transferred, and a simple structure has a low equipment cost, and The purpose of the present invention is to provide a spiral lifting machine that occupies a small floor area.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the spiral lifting machine of the present invention, an upper transfer table and a lower transfer table, which protrude substantially horizontally from the outer peripheral surface of the rotary shaft, are respectively provided on the upper and lower parts of the rotary shaft whose upper and lower ends are supported. A mounting table was provided, and a large number of free rollers were spirally arranged between the upper transfer table and the lower transfer table.

One or a plurality of lower tables are provided near the outside of the rotation locus of the lower transfer table, a lower conveyor is provided adjacent to the lower table, and the lower conveyor is placed outside the rotation trajectory of the upper transfer table. Provided and provided an upper table above the lower table, the upper table is provided adjacent to the upper conveyor, in the vertical direction from the lower table to the upper table in the vicinity of the outside of the rotation trajectory of the free roller, The guide surface is directed to the rotary shaft side, and a drop-prevention guide that prevents the conveyed object from falling is provided by the guide surface, and in the vertical direction from the lower table to the upper table near the outside of the rotation trajectory of the free roller. , A pressing surface is directed to an uphill side of an inclination along the spiral surface with respect to the spiral surface formed by connecting the upper surfaces of the free rollers, and the object is rotated by the pressing surface. An anti-rotation guide for preventing provided, provided transfer device to the upper table and the lower table.

[Action]

The spiral hoisting machine configured as described above can vertically convey an object to be conveyed upward and downward, but a case of upward conveyance will be described.

The upper surface of the free rollers arranged in a spiral form a substantially spiral surface.

This spiral surface rotates in the ascending direction, and when the lower transfer table approaches the lower table, the transfer device operates and the object to be conveyed on the lower conveyor is transferred to the lower transfer table via the lower table. .

The transported object transferred on the lower transfer table tries to rotate with the lower transfer table as it is, but it comes into contact with the rotation prevention guide and rotation is blocked, and it is mounted on the rotating free roller, preventing rotation. The transfer device operates to move the object to be conveyed through the upper table and the upper conveyer when it is mounted on the rotating upper transfer table that has been lifted up along the guide for moving and the guide for preventing falling out of the rotation trajectory. Moved to.

If multiple lower conveyors and upper conveyors are installed, match the timing when the upper transfer table approaches each upper table and the timing when the lower transfer table approaches each lower table. The above operations are simultaneously performed in parallel.

〔Example〕

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

FIG. 1 is a front view of a spiral hoist, FIG. 2 is a cross-sectional view showing a lower transfer section, and FIG. 3 is a cross-sectional view showing an upper transfer section.

In the figure, reference numeral 1 is a rotary shaft whose upper and lower ends are supported by bearings 2 and 3, and sprockets 4 and 5 are fixed to a small diameter portion 1a provided at a lower end thereof, and an output shaft of a motor 6 with a reduction gear. A chain 8 is wound around the fixed sprocket 7 and sprocket 4.

An upper transfer table 9 is provided above the rotary shaft 1 so as to project substantially horizontally from the outer peripheral surface of the rotary shaft 1 (see FIG. 3), and below the rotary shaft 1 is substantially horizontal from the outer peripheral surface of the rotary shaft 1. A lower transfer table 10 is provided which projects to the bottom (see FIG. 2).

Both the upper transfer table 9 and the lower transfer table 10 are provided with ball casters 11 on their upper surfaces in order to facilitate the transfer of the transported object.

Between the upper transfer table 9 and the lower transfer table 10,
A large number of arms 13 that are fixed to the outer peripheral surface of the rotating shaft 1 and support the free rollers 12 are arranged in a spiral shape, and the transport surface connecting the upper surfaces of the free rollers 12 forms a substantially spiral surface (see FIG. 4). ).

The lower table 14 is installed close to the outside of the rotation trajectory of the lower transfer table 10 that rotates with the rotating shaft 1.

In FIG. 2, the number of the lower tables 14 is two, and the lower tables 14 are provided symmetrically with respect to the rotating shaft 1. However, the number of the lower tables may be one, or three as shown in FIG. Can also be

The lower table 14 is provided with the ball casters 11 on the upper surface,
A lower conveyor 15 is installed adjacent to the lower table 14.

The lower conveyer 15 is a conveyer for feeding an object 16 to be conveyed such as a cardboard box to the lower transfer table 10.
An accumulating section having a friction roller 18 driven by 17, and a free roller 19 with a space section in the center.
Is provided in two rows, and vertically movable stoppers 20 and 21 are provided at the rear end of the friction roller 18 and the rear end of the free roller 19, respectively.

A transfer device composed of a conveyor chain 23 with a dog 22 is provided in the central space of the free roller 19.

A shaft 24 supported by a bearing (not shown) is disposed on the left side of the small diameter portion 1a of the rotary shaft 1, and a chain 26 is wound around a sprocket 25 and a sprocket 5 fixed to the lower end of the shaft 24.
Two bevel gears 28 mesh with a bevel gear 27 provided on the upper end of the shaft 24 (see FIGS. 1 and 6).

A sprocket 30 is fixed to a shaft 29 to which the bevel gear 28 is fixed, and a chain 32 is wound around a sprocket 31b and a sprocket 30 fixed to a shaft 31a to which a drive sprocket 31 of a conveyor chain 23 is fixed.

The upper table 33 is installed at a position closer to the outside of the rotation trajectory of the upper transfer table 9 and above the lower table 14.

A ball caster 1 is provided on the upper surface of the upper table 33, and an upper conveyor 34 is installed adjacent to the upper table 33.

The upper conveyor 34 has rollers 36 driven by a motor 35.

The bevel gear 37 is attached to the small diameter portion 1b provided at the upper end of the rotary shaft 1.
Bevel gears that are fixed to each other and mesh with the bevel gear 37
A sprocket 40 is fixed to a shaft 39 to which 38 is fixed, the sprocket 40 is connected to a sprocket 42 via a chain 41, and a drive side sprocket 46 of a conveyor chain 45 with a dog 44 is fixed to a shaft 43 to which the sprocket 42 is fixed. (See FIGS. 7 and 1).

A pedestal 47 is provided around the free rollers 12 arranged in a spiral shape.
The pedestal 47 is provided with a guide 48 and a rotation prevention guide 49 for preventing the transported object 16 from falling out of the rotation trajectory from the compound table 14 to above the upper table 33.

The fall-off prevention guide 48 prevents the transported object 16 transferred on the lower transfer table 10 from moving to the opposite side of the rotary shaft 1 due to the centrifugal force of rotation, and is placed above the lower table 14. Two vertical guides are provided from the provided transfer guide 50 to above the transfer guide 51 of the upper table 33.

The rotation preventive guide 49 indicates that the transferred object 16 transferred to the lower transfer table 10 is in the rotation direction of the lower transfer table 10 (transferred object).
It has a pressing surface in a direction perpendicular to the transfer guides 50 and 51. That is, the rotation prevention guide 49 is
Near the outside of the rotation path of the free roller 12, an upward side of an inclination along the spiral surface formed by the upper surface of the free roller 12 (in this embodiment, a clockwise direction in FIGS. 2 and 3). ) Is facing the pressing surface. The fall prevention guide 48 and the rotation prevention guide 49 are
A belt that rotates in the same direction and at the same speed as the spiral surface formed by the upper surface of the free roller 12 ascends or descends as the rotary shaft 1 rotates in order to prevent contact friction with the roller 16. It may have a conveyor or roller conveyor structure.

The operation of the spiral lifting machine configured as above will be described.

When the motor 6 is rotated in the normal direction, the rotary shaft 1 is free roller 12
The spiral surface of the machine rotates in the ascending direction, and the conveyor chains 23,4
5 rotates in the direction of arrow A.

On the lower conveyor 15, a plurality of objects 16 to be conveyed are placed on a rotating friction roller 18, and the stopper 20 prevents the traveling of the objects to be accumulated.
16 is placed on the free roller 19.

When the lower transfer table 10 approaches the lower table 14, the stopper 21 descends and the dog 22 of the conveyor chain 23 hits the rear surface of the transported object 16 on the free roller 19, so that the transported object 16 moves in the direction of arrow F. It is pushed and travels on the lower table 14, and it is placed on the lower transfer table 10 and tries to rotate with the lower transfer table 10, but hits the rotation prevention guide 49, and it is mounted on the rotating free roller 12, When rising along the rotation prevention guide 49 and the fall prevention guide 48 and when transferring to the upper transfer table 9 from the free roller 12, it hits the dog 44 of the conveyor chain 45 that rotates in the direction of arrow A and hits the upper conveyor 34. Is discharged to
It is conveyed in the direction of arrow G by the upper conveyor 34 which rotates in the direction of arrow G.

The transferred object 16 on the free roller 19 is the lower transfer table 10.
When transferred to the, the stopper 20 descends, the transported object 16 on the friction roller 18 is sent to the free roller 19 and the above-described transported object operation is performed, and the transported object 16 is successively transferred to the upper conveyor 34. Continuously and automatically.

When the lower table 14 is arranged at three places as shown in FIG. 5, three objects to be conveyed pass through the lower transfer table 10 and the free rollers while the lower transfer table 10 makes one rotation.
Since it is sent to 12, extremely efficient vertical conveyance is performed.

〔The invention's effect〕

Since the present invention is configured as described above, it has the effects described below.

(1) Since the spiral lifting machine transfers the transferred objects to the upper and lower conveyors without stopping the rotation, there is no down time for transfer, and it is possible to efficiently transfer a large amount of transferred objects in a short time. it can.

(2) Since the conveyor chain and the stopper are synchronized with the rotation of the rotary shaft, it is possible to automatically and continuously vertically convey the object to be conveyed.

(3) Since the spiral hoist has an extremely simple structure, the manufacturing cost of the equipment is low.

Also, since it is light in weight, it can be easily transported and installed.

(4) Since the floor space occupied by the spiral hoist is small, the limited floor space of the warehouse or factory can be effectively utilized.

(5) Since the spiral hoist can see through the transported object vertically transported from the surroundings, it is convenient for monitoring the automatically operated equipment.

(6) Since the transported object is transported without giving an impact, it is possible to transport a cardboard box or the like.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is a front view of a spiral hoist, FIG. 2 is a cross-sectional view showing a lower transfer section, and FIG. 3 is an upper transfer section. 4 is a perspective view of the free rollers arranged in a spiral shape, FIG. 5 is a layout drawing (schematic diagram) when the lower table which is a loading station is provided at three places, and FIG. FIG. 7 is a schematic view showing the rotation transmission mechanism of the conveyor chain of FIG. 7, and FIG. 7 is a schematic view showing the rotation transmission mechanism of the upper conveyor chain. 1 ... Rotary axis, 6 ... Motor, 9 ... Upper transfer table, 10 ... Lower transfer table, 11 ... Ball caster,
12 …… Free roller, 13 …… arm, 14 …… Lower table, 15 …… Lower conveyor, 16 …… Conveyed object, 17 …… Motor, 18 …… Friction roller, 19 …… Free roller, 20,21 ...... Stopper, 22 …… Dog, 23 …… Chain conveyor, 33 …… Upper table, 34 …… Upper conveyor, 35 …… Motor, 36 …… Roller, 44 …… Dog,
45 …… Conveyor chain, 47 …… Stand, 48 …… Dropout prevention guide, 49 …… Rotation prevention guide.

Claims (2)

[Claims] 1. An upper transfer table and a lower transfer table, which project substantially horizontally from the outer peripheral surface of the rotary shaft, are provided at the upper and lower parts of a rotary shaft that is rotatably driven by supporting both upper and lower ends thereof, and A large number of free rollers supported by the arm fixed to the shaft are arranged spirally between the upper transfer table and the lower transfer table, and one or more free rollers are provided outside the rotation locus of the lower transfer table. A plurality of lower tables, a lower conveyor is provided adjacent to the lower tables, and one or a plurality of upper tables are provided near the outside of the rotation trajectory of the upper transfer table and located above the lower tables. An upper conveyor is provided adjacent to the upper table, and a girder is provided on the rotation shaft side in the vertical direction from the lower table to the upper table near the outside of the rotation trajectory of the free roller. The guide surface is provided with a fall-out prevention guide for preventing the conveyed object from falling off. An anti-rotation guide for preventing rotation of the transported object is provided by directing a pressing surface toward an upward direction of an inclination along the spiral surface formed by connecting the upper surfaces, and the upper table and A spiral lifting machine characterized by having a transfer device on the lower table. 2. The drop prevention guide and the rotation prevention guide are set at a speed at which a spiral surface formed by the upper surface of the free roller spirally moves up or down as the rotary shaft rotates. On the other hand, it is constituted by a conveyor that rotates in the same direction and at the same speed.
The listed spiral hoist.