JPS6331919A - Material lifting gear - Google Patents

Abstract

PURPOSE:To support load in good balance as well as to aim at the promotion of light-weightiness and miniaturization of the whole system, by setting up a material mount between two chains, and connecting the central part to each chain in a pivotally supported manner. CONSTITUTION:When an article 6 is fed onto a material mount 7 from a material delivery device 16, a chain 3 is traveled clockwise, and if the preceding material mount 7 passes through the material delivery device 16 and the article 6 has not come into contact with it, both feed conveyors 19 and 20 are operated in the same direction and the article 6 is taken into a frame 1, and if the article 6 comes to a position astride a butted position between both conveyor 19 and 20, these conveyors are stopped. Under this state, the chain 3 is traveled clockwise intermittently and successively, and the material mount 7 is passed through upward from the downside of the butted part of both these conveyors whereby the article 6 is deliverable onto the material mount 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an article lifting device, and more specifically, for lifting articles between the first and second floors of a structure or between the lower and upper floors of a three-dimensional shelf. This invention relates to an article lifting and lowering device suitable for transporting articles by raising or lowering them.

``Prior Art'' Conventionally, in order to convey articles between, for example, the first floor and the second floor, the articles conveyed by a conveyor on the first floor are supplied to an article loading table of an article lifting device, and Articles are raised by a placing table and conveyed to a conveyor on the second floor. Various configurations have been proposed for this type of article lifting and lowering device, one of which is:
There is a known system in which a plurality of endless chains are hung vertically on a frame, an article placement table is constructed between the chains, and articles are supplied to or discharged from an article delivery device to the article placement table. (JP-A-50-35863, JP-A-59-182104, JP-A-50-35863, etc.).

``Problems to be Solved by the Invention'' However, in conventional article lifting and lowering devices, in order to raise and lower the number of articles mentioned above while suppressing the swinging of the table, the article mounting table is connected to four endless chains, or The connection of the article A table to the chain is cantilevered, which makes it impossible to support the load applied to the article table in a well-balanced manner.The structure of the entire device becomes complicated, and the frame has a large and highly rigid structure. As a result, the entire device has become large and expensive.

``Means for Solving the Problems'' In view of such 4F circumstances, the present invention has two endless wooden chains hung parallel to each other in vertical planes parallel to each other on a frame, and two ends of the chain are connected to each other in parallel to each other. ! The central part of the loading table is pivotally connected to each chain, and an endless cam rail along the endless chain is fixed to the frame F, and a cam follower provided on the article loading table is engaged with the endless cam rail to hold the article. A plurality of article delivery devices are provided to maintain the loading table in a horizontal state at all times, and to supply or discharge articles to or from the article loading table from intersecting directions that are one step apart from each other.
This device constitutes an article lifting/lowering device.

"Function" According to such a configuration, since the article mounting table is connected to each chain at its center, the load applied to the article mounting table can be supported in a well-balanced manner, and the cam rail fixed to the frame Since it is endless, the endless cam rail can be used as an effective reinforcing material for the frame, thereby making it possible to reduce the size and weight of the entire device.

``Embodiment'' The present invention will be described below with reference to the illustrated embodiment. In FIGS. 1 to 3, a vertically long frame l has
Four sprockets 2 are each pivotally supported in two mutually parallel vertical planes, and two wooden endless chains 3 are stretched in parallel to these sprockets. By interlocking the required sprockets 2 with a drive motor 5 fixed to the frame 1 through an appropriately configured drive system 4, both chains 3 can be run at the same speed and in the same direction.

A plurality of article mounting tables 7 on which articles 6 are placed respectively at predetermined intervals are arranged between the two wooden chains 3, and
Each article mounting table 7 is pivotally connected to each chain 3. As shown in FIG. 3, each of the article mounting tables 7 has an H-shaped horizontal plane formed by plate members 8 disposed parallel to each other and a connecting member 9 that connects the center portions of both plate members 8. The small diameter portions 9a at both ends of the connecting member 9 are made to penetrate the plate member 8 and protrude to the outside, and the small diameter portions 8a
are each pivotally connected to the chain 3.

Therefore, the article mounting table 7 is pivotally connected to the chain 3 at its center.

Further, one of the small diameter portions 8a of the article mounting table 7 passes through the chain 3, and a support plate 10 is attached to the projecting end thereof. This support plate 10
are disposed in a direction perpendicular to the longitudinal direction of the plate member 8, and the article mounting table 7 is made horizontal by orienting the support plate 10 in the vertical direction.

Two cam followers 11 are rotatably attached to the upper and lower positions of the support plate 10, and each cam follower 11 is engaged with an endless cam rail 12 provided along the chain 3 to constantly move the support plate hto in the vertical direction. Therefore, the article mounting table 7 is made to be in a horizontal state.

This endless force J rule 12 is fixed to the frame 1 and used as a reinforcing material for the frame 1.

The pair of left and right vertical portions 12a of the endless cam rail 12 can maintain the two cam followers 11 in the vertical direction and guide them simultaneously with one vertical portion 12a, but this cannot be done in the upper and lower horizontal portions. cannot,
Therefore, the horizontal portions are divided into two horizontal portions 12b.
, 12c, and guide each cam follower 11 separately in each horizontal portion +2b, 12c.
The vertical state of the two cam followers 11 can be maintained.

That is, among the two horizontal parts 12b and 12c, the upper horizontal part 12b guides the upper cam follower of the two vertically positioned cam followers 11, and the lower horizontal part 12c guides the lower cam follower. It looks like this. The upper horizontal portion 12b is positioned upwardly from the horizontal transport locus of the chain 3 by an amount corresponding to the distance between the connecting point of the small diameter portion 9a and the chain 3 and the upper cam follower 11. It is staggered.

Similarly, the lower horizontal portion 12c is also moved downward by an amount corresponding to the connection point between the small diameter portion 3a and the chain 3 and the lower cam follower 11 tonnage distance from the horizontal transfer locus of the chain 3. They are located at different locations, and those 2
By matching the spacing between the two horizontal portions 12b, ], 2c to the spacing between the two cam followers 11, the vertical state of the two cam followers 11 can be maintained as described above.

Next, at a lower position on one side of the frame 1, there is provided an article delivery device 1B for supplying or discharging articles 6 from the longitudinal direction of the plate member 8 to the article mounting table 7''.
On the other side, similar article delivery devices 17 are provided in multiple stages vertically.

The article delivery device 16 disposed below one side of the frame 1 includes a conveyor 19 fixed to the frame 1 and the floor 18 of the first floor of the structure, and a conveyor 20 fixed to the frame l. One conveyor 19
is driven by a drive motor (not shown) to the other conveyor 2.
0 can be driven by a drive motor 21 integrally attached thereto.

The end abutting portions of each of the conveyors 19 and 20 enter into the H-shaped article mounting table 7 and protrude to a position close to the connecting member 9 in the center (see FIG. 3). When the article is delivered from the article delivery device 16 to the article placement table 7, the article 6 is placed in a position straddling both abutting portions from a cross direction that intersects the plane between both chains.
is supplied, and in this state, the article mounting table 7 is moved from below to the upper side, so that the articles can be delivered from both conveyors 19 and 20 to the article a placing table 7.

In addition, on the contrary, from the article TA stand 7 to the article delivery device 16
It is clear that when delivering the article 6 to the user, the article/placement table 7 on which the article 6 is placed can be moved from above to below.

On the other hand, the plurality of article delivery devices 17 provided on the other side of the frame 1 are basically the same as the article delivery devices 1 below.
6, a conveyor 26 provided on the floor 25 constituting each floor of the structure, and a conveyor 2 provided on the frame 1.
7, and one conveyor 2B can be driven by a drive motor (not shown), and the other conveyor 27 can be driven by a drive motor 28 integrally attached thereto.

However, each of the conveyors 26, 27 of the multi-stage article delivery device 17, except for the article delivery device disposed at the lowest position, has the above-mentioned H,! :i is provided so as to be movable between an article delivery position where it enters the article mounting table 7 and faces each other, and a retreat position where it retreats from there and allows the article 6 to pass therethrough.

That is, one conveyor 2B provided on the floor 25 is
A fixed part 2Eia fixed to the floor 25 and a movable part 28 that moves forward and backward in the horizontal direction with respect to the fixed part 26a.
b, and the movable part 26b can be moved horizontally between the article delivery position and the retreat position by means of a cylinder device 28 disposed between the movable part 26b and the floor 25. ing.

On the other hand, the other conveyor 2 provided on the frame 1
7 has its base pivotally supported on the frame 1 by a shaft 30, and is swung between the article delivery position and the retreat position by a cylinder device 31 disposed between the conveyor 27 and the frame 1. I'm making it possible to move it.

In the above configuration, when supplying the article 6 from the article delivery device 16 onto the article M\i table 7, the chain 3 is run clockwise, and the preceding article an table 7 feeds the article M\i table 7. Once the article 6 no longer comes into contact with it, the reconveyor 18.20 is driven in the same direction to carry the article into the frame 1 until the article 6 straddles the abutment of the reconveyor 19.20. When the position is reached, the operation of the retransport conveyor 13.20 is stopped.

In this state, the chain 3 is run clockwise intermittently or continuously, and the article mounting table 7 attached to the chain 3 is passed through the abutting portion of the reconveyor 18, 20 from below to above. The reconveyor conveyor19.
The article 6 on the article 20 can be transferred onto the article placement table 7.

Next, when the article 6 on the article placement table 7 is to be discharged to the outside by the uppermost article delivery device 17, the re-transport conveyors 2B and 27 are entered into the article a placement table from opposite directions, and thereby The leading ends of the conveyors 26 and 27 are placed in a delivery position where they abut against each other. In this state, the article 6 on the article a placement table 7 is transferred to the re-conveyor 26 by passing the article 6 placed thereon from above to the abutting portion of the re-conveyor 26, 27.
．． 27, and when the article 6 is delivered onto the re-conveyor 26.27, the one-car conveyor 26.2
7 in the same direction, the article 6 can be discharged to the outside.

In addition, when discharging the subsequent article 6 to the outside by the lower article delivery device 17, the retransport conveyor 28, 27 of the article delivery device 17 that performs the discharge is positioned at the article delivery position, and the Goods delivery device 17
It is clear that the retransport conveyors 26, 27 can be placed in a retracted position so that the articles do not come into contact with the article transfer device 17 above them. Furthermore, it is also clear that the article 6 can be lowered from the article delivery device 17 to the article delivery device 1B.

In this embodiment, the conveyor 26.2
7 in the retracted position or in the delivery position, the two transport conveyors 26 and 27 are operated in opposite directions, so that one transport conveyor can be placed in the delivery position and the retracted position. The operating time can be substantially halved compared to the case where the article 6 is moved over a period of 20 minutes, and therefore the article 6 can be quickly fed and discharged.

In the above embodiment, the frame 1 is fixed and the article 6 is transported up and down between the floor 18 of the first floor of the structure and the floor 25 of each floor of the structure, but it is Of course, the present invention can be applied to
In that case, the frame 1 can be made movable in a direction perpendicular to the plane of the paper, and the article delivery device can be arranged in parallel in that direction.

"Effects of the Invention" As described above, in the present invention, since the article a placement table 7 is connected to each chain 3 at its center, the load applied to the article placement table 7 can be supported in a well-balanced manner. Since the cam rail 12 fixed to the frame 1 is endless,
The endless cam rail 12 can be used as an effective reinforcing material for the frame 1, thereby achieving the effect that the entire device can be made smaller and lighter.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
The left side view of the figure and FIG. 3 are side views of the main parts of FIG. 1. 1... Frame 3... Endless chain 6...
・Article 7...Article mounting table 11...Cam follower 12...Endless cam rail 1B, 17
... Goods delivery device 19.20.26.27 ... Conveyor 29.31
...Cylinder device

Claims (3)

[Claims] (1) Two endless chains are hung parallel to each other in a vertical plane that is parallel to the frame, an article mounting table is placed between both chains, and the central part of the article mounting table is pivotally connected to each chain. Further, an endless cam rail along the endless chain is fixed to the frame, and a cam follower provided on the article mounting table is engaged with the endless cam rail to maintain the article mounting table in a horizontal state at all times, and a An article lifting and lowering device characterized in that a plurality of article delivery devices are provided for supplying or discharging articles to or from the article mounting table from a direction intersecting the plane of the article. (2) The article delivery device is provided in multiple stages in the vertical direction,
and an article delivery position where an article delivery device above the plurality of stages enters the article placement table and supplies or discharges the article;
The article lifting/lowering device according to claim 1, wherein the article lifting/lowering device is provided so as to be movable between a retreating position and a retreating position where the article placed on the article mounting table is allowed to pass through. . (3) The article delivery device includes two conveyors disposed on both sides of the article mounting table, and both conveyors
It is characterized in that it is provided movably between the article delivery position, where the table enters the article placement table from opposite directions and its leading ends face each other, and the retracted position, which is spaced apart from there. An article lifting and lowering device according to claim 2.