JP2715673B2 - Shelf with slide table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf provided with a slide table which can be moved back and forth between a protruding limit position and a retreat limit position.

[0002]

2. Description of the Related Art Conventionally, as this type of shelf with a slide table, there is one disclosed in Japanese Utility Model Laid-Open No. 2-107337, for example. That is, a slide table supported and guided by a guide rail of a shelf frame via a guide roller is provided, and a slide table that is movable back and forth is provided. The mating nut body is connected to the slide table, and a connection portion with an electric tool is formed at an end of the screw shaft.

When the power tool is connected to the screw portion and rotated forward and backward, the screw shaft rotates and the nut body moves along the screw shaft, whereby the slide table is guided by the guide rail. Move in and out.

[0004]

According to the above-mentioned conventional type, an electric tool is required to move the slide table back and forth. For this reason, in order to move the slide table at a high position from the floor surface back and forth, an operator must ride on a table or the like and operate the power tool, and the worker slides the slide table protrudingly. There is a danger of falling due to contact with the device or dropping of the power tool.

[0005] Further, in order to move the slide table at a low position near the floor surface, the operator has to crouch on the floor surface to operate the power tool, which is very difficult to operate.

An object of the present invention is to provide a shelf with a slide table that allows the slide table to be safely and easily and withdrawn.

[0007]

In order to achieve the above object, a shelf with a slide table according to the present invention is provided with a shelf frame .
Disposed a pair of left and right guide rails in the longitudinal direction in the vertical plural locations, set <br/> only a slide table which is supported and guided via a plurality of guide rollers in a plurality of vertical stages in the guide rails, slide table A drive roller rotatable in the front-rear direction on the guide rail and a drive device interlocked with the drive roller, and a detection device for detecting a protruding limit position and a retreat limit position of each slide table ; Each
An operation unit for instructing the ride table to move in and out, and the above detection
Stops driving of the above driving device according to the detection signal from the device
And one of the slide tables is at the protruding limit
When it is detected that the
Drive unit for the remaining slide table even if there is an instruction to protrude
And a control device for stopping the operation.

[0008]

According to the structure of the present invention, when the slide table is pulled out from the shelf, the drive unit is driven by operating the operation unit, and the drive roller is rotated forward. Thereby, the target slide table is supported and guided by the guide rail via the guide roller, and protrudes forward of the shelf. When the slide table is pulled out to the protruding limit position, the detection device operates and a detection signal is sent to the control device, whereby the control device stops driving the driving device. When inserting the slide table into the shelf,
By operating the operation unit, the drive device is driven, the drive roller is rotated backward, and the slide table is moved back to the shelf. When the slide table is inserted to the retreat limit position, a detection signal of the detection device is sent to the control device, and the control device stops driving the driving device. In addition,
One slide table is protruded to the protruding limit position.
The other slide table by operating the operation unit.
Even if you try to make it protrude, other switches are controlled by the control device.
The drive of the ride table does not drive and remains stopped
You. In this way, even if the operation unit is erroneously operated,
Loading of goods to the slide table pulled out at
The worker who is working on the job has another slide table
A new protrusion and collision are prevented.

When inserting the slide table into the shelf,
By operating the operation unit, the drive device is driven, the drive roller is rotated backward, and the slide table is moved back to the shelf. When the slide table is inserted to the retreat limit position, a detection signal of the detection device is sent to the control device, and the control device stops driving the driving device.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, reference numeral 1 denotes a shelf frame, which includes a pair of left and right front supports 2, a pair of left and right intermediate supports 3, a pair of right and left rear supports 4, and each of the supports 2, 3, 4. A lattice 5 connecting the front and rear, a brace 6 connecting the rear struts 4,
It is composed of a top plate frame 7 connecting the upper portions of the columns 3 and 4 and a lower support 8 connecting the lower portions.

The shelf frame 1 has a pair of left and right guide rails 10.
Are arranged in a plurality of upper and lower stages. As shown in FIGS. 4 to 6, these guide rails 10 are channel-shaped, are arranged in the front-rear direction with their open portions facing each other, and correspond to the outer surfaces and the columns 2, 3, 4. The mounting brackets 11, 12, and 13 are connected to the corresponding locations. Mounting is performed by applying brackets 11, 12, and 13 to the columns 2, 3, and 4, and then passing the connector pins 14 between them. On the upper surface of the lower plate part of both guide rails 10, rail material 15
Is laid. At the front and rear ends of either one of the guide rails 10, front and rear stopper plates 16, 17 made of, for example, urethane rubber are provided.

A slide table 18 located between the two guide rails 10 has guide rollers 19 supported and guided by rail members 15 on both sides of the rear and one side of the intermediate part. Side guide rollers guided inside
20,21 on the rear sides and on the middle sides.

On the other side of the intermediate portion of the slide table 18, a drive roller 23 rotatably supported and guided by the rail member 15 is provided.
An electric motor 24, which is an example of a driving device, is provided. The drive roller 23 is linked to the electric motor 24 via sprockets 25, 26 and a chain 27 stretched between the sprockets 25, 26.

Each of the slide tables 18 and each of the guide rails 10 have magnetic proximity switches 28 and 29 as an example of a detecting device.
And a magnet 30 are attached. That is, the magnet 30 is provided on one of the left and right ends of the rear end of the lower surface of the slide table 18.
A pair of front and rear magnetic proximity switches 28 and 29 are provided on the lower surface of the guide rail 10 in the same direction as the magnet 30. The front magnetic proximity switch 28 is a slide table
It is provided at a position facing the magnet 30 when the extension 18 is pulled forward and reaches the protruding limit position. Rear magnetic proximity switch
Reference numeral 29 is provided at a position facing the magnet 30 when the slide table 18 is inserted into the shelf frame 1 and reaches the retreat limit position.

A control device 32 is provided on the upper surface of the top plate frame 7, and stops driving of the motor 24 according to detection signals of the front and rear magnetic proximity switches 28 and 29. An operation unit 33 having operation buttons is provided at a front intermediate portion on one side of the front support column 2, and by operating the operation unit 33, a target slide table 18 can be moved out and back. .

An electric motor 24 on the lower surface of each slide table 18
On the mounting side, a current collector mounting bracket 35 having a current collector 34 is provided and connected to the electric motor 24. Each guide rail 10 in the same direction as the current collector mounting bracket 35
A power supply cable mounting bracket 37 having a power supply cable 36 is provided on a lower surface of the power supply cable 36. The current collector 34 is always in sliding contact with the power supply cable 36, and slides along the power supply cable 36 with the slide table 18 moving out and back,
Electric power is supplied to the electric motor 24.

The operation of the above embodiment will be described below. When pulling out one slide table 18 from the shelf with all slide tables 18 inserted,
When the operator operates the operation unit 33, the electric motor 24 is driven, and the driving roller 23 is rotated forward in conjunction with this. Then, the target slide table 18 is supported and guided by the guide rail 10 via the guide roller 19 and the side guide rollers 20, 21 and protrudes forward of the shelf.

As shown by a virtual line (a) in FIG. 7, when the slide table 18 is pulled out to the protruding limit position, the magnet 30
Reaches a position facing the front magnetic proximity switch 28, the front magnetic proximity switch 28 is turned on from off, and a detection signal is sent to the control device 32. Thereby, the control device 32
Automatically stops driving the electric motor 24, and the slide table 18 stops at the protruding limit position when the front side guide roller 20 abuts on the front stopper plate 16. At this time, the user operates the operation unit 33 to newly add another slide table 18.
By setting the control device 32 so that the electric motor 24 is not driven even when trying to pull out, even if an erroneous operation is performed, the work of loading and unloading articles from the slide table 18 already drawn out can be performed. An accident in which another slide table 18 newly protrudes and collides with a worker who is working can be prevented.

After loading and unloading the articles to and from the slide table 18 pulled out as described above, when the slide table 18 is to be inserted into the shelf, the operator operates the operation section 33 to operate the operation section 33. Then, the electric motor 24 is driven, and the driving roller 23 is rotated backward. Then, the slide table 18 retreats into the shelf frame 1.

As shown by the solid line (b) in FIG. 7, when the slide table 18 is inserted to the retreat limit position, the magnet 30 reaches the position facing the rear magnetic proximity switch 29, and the rear magnetic proximity switch 29 From the off state to the on state, a detection signal is sent to the control device 32. As a result, the control device 32 automatically stops driving the electric motor 24, and the slide table 18 stops at the retreat limit position when the rear side guide roller 21 contacts the rear stopper plate 17.

In the above-described embodiment, the magnetic proximity switches 28 and 29 are used as the detection unit of the detection device. However, this may use a photoelectric switch.

[0022]

According to the present invention having the above-described structure, the slide table is provided with the drive roller and the drive device, and the control device automatically stops the slide table, which can move freely, between the protrusion limit position and the retreat limit position. With this arrangement, the power tool as in the past is not required to move the slide table back and forth.By operating the operation unit, the slide table can be moved to a high position or a low position regardless of the mounting height of the slide table. It can be easily moved in and out.

Therefore, unlike the conventional case, the worker does not step on the table or crouch on the floor to operate the power tool, so that the worker contacts the protruding slide table and falls. or call dropping the electric tool
However , the work can be performed safely and easily. Sa
In addition, move one of the slide tables to the protruding limit position.
While operating with the operation unit, make another slide
Even if you attempt to protrude the cable,
Drive of other slide table stopped without driving
Will remain. This allows you to operate the operation unit incorrectly.
But the slide table already pulled out
Workers who are carrying in and out of goods are given other slide
The cable is prevented from newly projecting and colliding.

[Brief description of the drawings]

FIG. 1 is a plan view of a shelf with a slide table according to an embodiment of the present invention.

FIG. 2 is a front view of the shelf with a slide table.

FIG. 3 is a side view of the shelf with the slide table.

FIG. 4 is a partially cutaway AA view in FIG. 1;

FIG. 5 is a view taken in the direction of arrows BB in FIG. 2;

FIG. 6 is a partially cut-away CC view in FIG. 2;

FIG. 7 is a schematic side view showing the slide table retracting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shelf frame 2 Front support 3 Intermediate support 4 Rear support 10 Guide rail 16 Front stopper plate 17 Rear stopper plate 18 Slide table 19 Guide roller 23 Drive roller 24 Motor (drive device) 28 Front magnetic proximity switch (detection device) ) 29 Rear magnetic proximity switch (detection device) 30 Magnet (detection device) 32 Control device 33 Operation unit

Claims (1)

(57) [Claims] 1. A pair of left and right guide rails are arranged in a front-rear direction at a plurality of upper and lower positions of a shelf frame , and slide tables supported and guided by a plurality of guide rollers on these guide rails are provided at a plurality of upper and lower stages . These slide tables are provided with a driving roller rotatable in the front-rear direction on the guide rails and a driving device interlocked with the driving rollers, and a protruding limit position and a retreat limit position of each slide table are provided. And a detection device for detecting the movement of each slide table.
Operating unit, and a detection signal from the detection device.
Stop the driving of the driving device, and
When the table is detected to be in the extended position
Even if there is an instruction to protrude from the operation unit,
A shelf with a slide table, further comprising a control device for stopping a drive device of the slide table.