JP2543769B2 - Captive member drive mechanism - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a drive mechanism for driving a fall prevention member for opening and closing a loading / unloading port for articles provided in a carrier or the like.

[Prior Art] Conventionally, in addition to the shelf unit, a movable carrier for carrying the taken-out article is provided, and the carrier can be put in and taken out of the shelf unit, and is put in the shelf unit. There is an automatic warehousing / unloading device that directly puts an article in and out of a carrier in a state.

Specifically, when an article carrier is provided so as to be controlled to move vertically and horizontally along the shelf front of the article storage shelf unit and when the carrier provided on the carrier is stopped at a predetermined position on the shelf. A carrier table device characterized by an article transfer device for taking out an article from a shelf or transferring an article on a carrier table to a shelf, a drive source for operating the article carrier table device, and the carrier table device are defined. In a device for automatically loading and unloading articles having a control circuit for controlling the above-mentioned operation, a movable carrier configured so that a plurality of articles can be loaded and unloaded from an article loading / unloading port on the front surface like the shelf of the shelf unit. Is provided separately from the shelving unit, and on the other hand, the shelving unit is provided with an opening at the lower end face thereof for allowing the carrier to pass therethrough, and is provided with a space near the opening for receiving the carrier The carrier is arranged in the vacant space so that the article can be directly taken in and out of the carrier also by the article passing device, and further, the carrier is inserted into the article taking-in / out port to drop the article. An article falling prevention guard member that is movable between a locking position and a position that does not obstruct the taking in and out of the article, and a lever that is exposed on the outer surface of the carrier and interlocks with the guard member are provided. The shelf unit is provided with a switch for detecting a position of the lever when the carrier is arranged in the empty space on a wall surface defining the empty space, and an automatic article loading / unloading device. It is known (see Japanese Patent Publication No. 60-55403).

According to this type of article automatic loading / unloading apparatus, loading / unloading work of the article is reduced.

[Problems to be Solved by the Invention] However, in the above-mentioned automatic article loading / unloading apparatus, prior to loading / unloading the article into / from the carrier by the article delivery apparatus, the lever is manually operated to move the article drop-out prevention guard member into / out of the article. It is necessary to displace it to a position that does not interfere. This work is relatively troublesome.

Therefore, an object of the present invention is to provide a drop-prevention member drive mechanism suitable for opening and closing the drop-prevention member that prevents the article from falling off at the entrance / exit of the article.

[Means for Solving the Problems] According to the present invention, in a drive mechanism that drives a fall-off prevention member that is openably and closably provided at an entrance / exit for an article, a horizontal first pin that is fixed in position and the first pin. A rotatable crank supported by the second crank, a horizontal second pin fixed to one end of the crank, a pin drive plate vertically movable and engaged with the second pin in the vertical direction, A drop-out prevention member drive mechanism is provided, which includes an operation member for moving the pin drive plate up and down, and the drop-out prevention member is fixed to the other end of the crank.

[Embodiment] FIGS. 1 (a), (b), and (c) show the overall structure of an automatic article loading / unloading apparatus using a carrier equipped with a dropout prevention member driving mechanism according to an embodiment of the present invention. ing. This automatic article storage / receipt device has two shelving units 11 and 12 facing each other at a distance from each other, as in Japanese Patent Publication No. 60-55403. Each of these shelf units 11 and 12 has a plurality of shelves, and each shelf has a container 13
A large number of cells can be arranged at equal intervals in the lateral direction. Further, between the shelving units 11 and 12, there is provided a carrier table device 14 characterized by an article carrier which is controlled to move vertically and horizontally along the front surface of the shelf and an article passing device provided on the carrier. Has been. Then, the carrier table device 14 is operated by a drive source such as a motor, and its operation is controlled by an appropriate control device, the carrier table is stopped at various positions on the shelf, and the article transfer device transfers the container from the shelf to the container.
It is possible to take out 13 and transfer the container 13 on the carrier to a shelf. As the concrete constitution of the carrier device 14, those known in Japanese Utility Model Publication No. 54-1751 can be used, so that the details thereof are omitted here.

With further reference to FIG. 1, a small carrier that can be moved freely on the floor separately from the shelf units 11 and 12.
16 is provided. Carrier 16 stores container 13 in shelving unit 11,1
Similar to the 2 shelves, it has a structure that can be placed in and out from the front. In the drawing, the container 13 is shown as arranged in two stages, but the number of stages is not limited to this.
It is desirable to use a large number of such carriers 16.

One shelf unit (11) is provided with a loading / unloading port (17) for allowing a carrier (16) at a lower position on one end face to pass through. A space 18 for receiving the carrier 16 is provided inside the loading / unloading port 17. Vacancy 18
On the side of, guides 21,22 for guiding the movement of the carrier 16 are provided.
To provide. Further, an operation panel 23 is provided in the vicinity of the loading / unloading port 17.

2 (a), (b) and (c) show the container 13. As shown in FIG.
The container 13 is a substantially rectangular container and has an open upper surface. Handles or engaging portions 24 for engaging with hooks or pickers (not shown) of the carrier table 14 are provided on the outer surfaces of the longitudinal ends of the container 13. Container 13
A plurality of disk-shaped magnetic tapes 26 are accommodated in the inside of the disk in a state of being arranged at intervals in the longitudinal direction.

Referring to FIGS. 3 (a), (b) and (c), the carrier
16 has a structure in which four side surfaces are open. The frame 27 of the carrier 16 is provided with shelf plates 28 in two steps, upper and lower. The shelf board 28 is for mounting the container 13. Each shelf 28
On the upper surface of the pair of sliders 31 for facilitating the movement of the container 13 in the front-back direction 29 of the carrier 16,
A pair of container guides 32 that guide the movement of the container 13 are provided facing both side surfaces of the container 13.

A pair of pin fixing members 33 are fixed to the lower surface of the front portion of each shelf board 28. A crank 36 is rotatably supported on the pin fixing member 33 by a pin 34 that functions as a first pin. A fall prevention member, that is, a fall prevention plate 37 is fixed to the front end of the crank 36. A pin 38 serving as a second pin is attached to the rear portion of the crank 36. Both ends of the pin 38 are inserted into the elongated holes 41 of the pin drive plate 39. Each shelf 28
The pin drive plates 39 corresponding to are connected to each other by a connecting rod 42. The connecting rod 42 is held on the shelf plate 28 by a guide 43 so as to be slidable up and down, and is urged downward by a push spring 44.

Further, an operation plate 46 is fixed to the lower surface of the pin drive plate 39 at the bottom. Therefore, when the operation plate 46 is moved up and down,
All the pin drive plates 39 move up and down, and as a result, all the drop-out prevention plates 37 intervene below the container loading / unloading port on the front of the carrier 16 with the pins 34 as fulcrums to lock the dropout of the container 13. And a second position that does not interfere with the loading and unloading of the container 13. Crank here
The 36, the pin 38, the pin drive plate 39, and the operation plate 46 are collectively referred to as an operation device.

The carrier 16 is provided with casters 47 near the four corners of the lower surface to facilitate movement. Further, a limit switch 49 is provided on the lower portion of the front surface of the projecting plate 48 protruding downward from the front end of the frame 27.

Still referring to FIGS. 3 (a), (b) and (c), together with FIG. 1, a fixed stopper 51 is fixedly provided on the lower surface of the inner portion of the empty space 18 of the shelf unit 11. Fixed stopper
51 activates a limit switch 49 when the carrier 16 is placed in position in the void 18. Behind the fixed stop 51, an elevating stopper 52 is provided as an operating member that moves up and down in the space 18 by elevating. The elevating stopper 52 opposes the lower surface of the operation plate 46 of the carrier 16 when the carrier 16 is arranged at a predetermined position in the space 18, and pushes up the operation plate 46 when ascending. The distance between the fixed stopper 51 and the lift stopper 52 is set to be slightly larger than the thickness of the projecting plate 48.

In the above-mentioned automatic article loading / unloading device, the carrier
When the 16 is located outside the void 18 of the shelf unit 11, the operating plate 46 is in a relatively lower position so that the cap 37 is in the first position. Therefore, since the container 13 is prevented from falling off, there is no need to worry about the container falling off when the carrier 16 moves.

When the carrier 16 is in place in the void 18, the limit switch 49 is activated. That is, carrier 16
The detection signal of is obtained. This detection signal is input to a control device (not shown). The control device raises the lift stopper 52 based on the detection signal. The elevating stopper 52 pushes up the operation plate 46 when ascending. Then, all the pin drive plates 39 ascend together with the connecting rods 42, and lift the pins 38. At this time, the pin 38 rotates the crank 36 with the pin 37 as a fulcrum. As a result, the fall prevention plate 37 is displaced to the second position where it does not interfere with the loading and unloading of the container 13. Therefore, the container 13 is transferred from the carrier 16 to the carrier device 14
It is possible to easily put in and take it out.

At the same time, the lift stopper 52 faces the rear surface of the projecting plate 48. As a result, the movement of the projecting plate 48 is locked by the fixed stopper 51 and the lift stopper 52. That is, the carrier 16 is fixed at a predetermined position in the space 18. Therefore, the container 13 can be reliably put in and taken out by the carrier device 14.

After the completion of the work of taking in and out the container 13, the control device lowers the lift stopper 52. Then container 13 is empty 18
It can be easily pulled out to the outside. Empty container 13
When it is pulled out to the outside of 18, the operating plate 46 is pushed back downward by the push spring 44. As a result, the fall prevention plate 37 returns to the first position and prevents the container 13 from dropping.

FIG. 4 shows a falling-off prevention member driving mechanism according to another embodiment, in which an eccentric cam device is used as an operating member instead of the operation plate 46 and the elevating stopper 52. This eccentric cam device includes a shaft 56 rotatably supported by the frame 27 and a shaft 56.
An eccentric cam plate 57 that is eccentrically fixed to 56 and faces the pin drive plate 39.

When the shaft 56 is rotated by a lever or the like, the eccentric cam plate 57 is also rotated and the pin drive plate 39 is moved up and down. As a result, as in the embodiment of FIG. 3, the cap 37 is displaced between the first position and the second position. Therefore, the container 13 can be easily put in and taken out of the carrier 16.

In the embodiments, the case of handling a magnetic tape as an article has been described, but the same can be applied to the case of handling various other articles. Needless to say, various types can be used as the carrier device 14.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a drop-prevention member driving mechanism suitable for opening and closing the drop-prevention member for preventing the fall of an article at the entrance / exit of the article.

[Brief description of drawings]

FIG. 1 shows an automatic loading / unloading apparatus for articles using a carrier equipped with a fall-off prevention member driving mechanism according to an embodiment of the present invention, (a) is a schematic plan view, (b) is a schematic front view, and (c).
Is a schematic side view. FIG. 2 shows a container transported by a carrier, (a) is a plan view, (b) is a side view,
(C) is a front view. Figure 3 shows the carrier,
(A) is a side view, (b) is a front view, and (c) is a perspective view of only a main part. FIG. 4 shows a fall-off prevention member driving mechanism according to another embodiment, (a) is a front view and (b) is a side view. 11,12 ... Shelf unit, 13 ... Container, 14 ... Conveyor stand device, 16 ... Carrier, 17 ... Entry / exit port, 18 ... Vacancy,
24 …… engagement part, 26 …… magnetic tape, 27 …… frame, 28
...... Shelves, 33 ...... pin fixing members, 34 ...... pins, 36 ...... cranks, 37 …… fall prevention plates, 38 …… pins, 39 …… pin drive plates, 41 …… oblong holes, 42 …… Connecting rod, 43 ... Guide, 44 ...
… Pressing spring, 46 …… Operating plate, 47 …… Caster, 48 ……
Veneer, 49 …… Limit switch, 51 …… Fixed stopper, 52 …… Up / down stopper, 56 …… Axis, 57 …… Eccentric cam.

Claims (1)

(57) [Claims] 1. A drive mechanism for driving a fall-prevention member that is openably and closably provided at an entrance / exit of an article, and has a first position-fixed horizontal pin and a rotatable crank supported by the first pin. , A horizontal second fixed to one end of the crank
Pin, a pin drive plate that is vertically movable and engaged with the second pin in the vertical direction, and an actuating member that moves the pin drive plate up and down, and the fall prevention member includes the other end of the crank. A fall prevention member driving mechanism, which is fixed to the.