JPH04253810A - Rack with slide table - Google Patents

Abstract

PURPOSE:To easily draw out a slide table irrespective of the height of the table and to facilitate work by providing to a slide table driving rollers movable back and forth on guide rails and a driver, and by providing is a means for detecting the positions where the table is fully drawn out pushed in. CONSTITUTION:On a rack frame 1 a pair of right and left guide rails 10 are provided in a plurality of tiers, and front and back plates 16, 17 are provided. A slide table 18 between the guide rails 10 is provided with guide rollers 19 supported and guided by rail members 15 on both sides of the rear thereof and on one side of the intermediate part and also provided with side guide rollers 20, 21. On the other side of the intermediate part of the slide table a driving roller supported and guided by thg rail members 15 and a motor 24 are provided and interlocked with sub-rockets, 25, 26 and a chain 27. The slide table 18 and the guide rails 10 are provided with a magnetic proximity switch 28, 29 and a magnet 30. Hence, the slide table 18 can travel freely between two limit positions where the slide table is freely drawn out and pushed in.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf equipped with a slide table that is movable back and forth between an extension limit position and a retraction limit position.

0002

2. Description of the Related Art Conventionally, there is a shelf with a slide table of this type as shown in, for example, Japanese Utility Model Application Publication No. 2-107337. That is, a slide table is provided which is supported and guided by the guide rail of the shelf frame via guide rollers and can freely move in and out, and a screw shaft along the direction of movement is provided in the shelf frame so as to be rotatable. A mating nut body is connected to the slide table, and a connection part with a power tool is formed at the end of the screw shaft.

[0003] By connecting a power tool to the threaded part and rotating it forward and backward, the screw shaft rotates and the nut body moves along the screw shaft, and the slide table is guided by the guide rail accordingly. Move in and out.

0004

According to the conventional type described above, a power tool is required to move the slide table in and out. Therefore, in order to move a slide table that is located high above the floor, a worker must stand on a platform or the like and operate the power tool. This was dangerous because there was a risk that the tool would come into contact with the object and fall, or the power tool might fall.

[0005] Furthermore, in order to move the slide table located at a low position near the floor, the worker must crouch down on the floor to operate the power tool, which is extremely difficult to operate.

An object of the present invention is to provide a shelf with a sliding table that allows the sliding table to be moved in and out safely and easily.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a shelf with a sliding table according to the present invention has a shelf frame with a pair of left and right guide rails arranged in the front and back direction, and a plurality of guide rails on these guide rails. A slide table supported and guided via rollers is provided, and the slide table is provided with a drive roller rotatable in the front and rear directions on the guide rail and a drive device interlocked with the drive roller, and the slide table has a protrusion limit. A detection device that detects the position and a retraction limit position, a control device that stops driving the drive device based on a detection signal from the detection device, and an operation section that instructs the slide table to move in and out. There is.

[0008]

According to the structure of the present invention, when the slide table is pulled out from the shelf, the drive device is driven by operating the operating section, and the drive roller is rotated forward. As a result, the target slide table is supported and guided by the guide rails via the guide rollers and protrudes toward the front of the shelf. When the slide table is pulled out to the extension limit position, the detection device is activated and a detection signal is sent to the control device, which causes the control device to stop driving the drive device.

[0009] When inserting the slide table into the shelf,
By operating the operating section, the drive device is driven, the drive roller rotates rearward, and the slide table moves into and out of the shelf. When the slide table is inserted to the retraction limit position, a detection signal from the detection device is sent to the control device, and the control device stops the drive device.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, 1 is a shelf frame, which includes a pair of left and right front struts 2, a pair of left and right middle struts 3, a pair of left and right rear struts 4, and each of the struts 2, 3, and 4. A lattice 5 that connects the front and back, a brace 6 that connects the rear strut 4,
It is composed of a top plate frame 7 that connects the upper portions of each of the columns 3 and 4, a lower support 8 that connects the lower portions, and the like.

The shelf frame 1 has a pair of left and right guide rails 1.
0 are arranged in multiple rows above and below. As shown in FIGS. 4 to 6, these guide rails 10 are channel-shaped, and are disposed in the front-rear direction with their open portions facing each other, and correspond to the outer surfaces of the columns 2, 3, and 4. Mounting brackets 11, 12, and 13 are connected to the locations where they are attached. Then, the brackets 11 and 12 are installed on the pillars 2, 3, and 4.
, 13, then insert the connector pin 14 between them.
This is done by passing. A rail material 15 is laid on the upper surface of the lower plate portion of both guide rails 10. Front and rear stopper plates 16 and 17 made of urethane rubber, for example, are provided at the inner front and rear ends of either one of the guide rails 10.

The slide table 18 located between the two guide rails 10 has guide rollers 19 supported and guided by the rail material 15 on both rear sides and on one side of the middle part, and further has guide rollers 19 supported and guided by the rail material 15, and further has guide rollers 19 on both sides of the rear part and on one side of the middle part. Side guide rollers 20 and 21 guided by the inner surface are provided on both sides of the rear part and on both sides of the middle part.

On the other side of the middle part of the slide table 18,
A drive roller 2 that is supported and guided by a rail material 15 and is rotatable.
3 and an electric motor 24, which is an example of a drive device. The drive roller 23 has sprockets 25 and 26
The sprockets 25 and 26 are interlocked with the electric motor 24 via a chain 27 stretched between them.

Each slide table 18 and each guide rail 10 is equipped with a magnetic proximity switch 2, which is an example of a detection device.
8, 29 and a magnet 30 are attached. That is, a magnet 30 is provided on either the left or right end of the rear end of the lower surface of the slide table 18, and a pair of front and rear magnetic proximity switches 28, 29 are provided on the lower surface of the guide rail 10 in the same direction as the magnet 30. It is being The front magnetic proximity switch 28 is provided at a position facing the magnet 30 when the slide table 18 is pulled forward and reaches the protrusion limit position. The rear magnetic proximity switch 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 retraction limit position.

A control device 32 is provided on the top surface of the top frame 7, and stops the drive of the electric motor 24 in response to detection signals from the front and rear magnetic proximity switches 28, 29. An operating section 33 having an operating button is provided at the front middle portion of either side of the front strut 2, and this operating section 33
By operating the slide table 18, the target slide table 18 can be moved in and out.

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

The operation of the above embodiment will be explained below. When pulling out one slide table 18 from the shelf when all the slide tables 18 are inserted,
When a worker operates the operation unit 33, the electric motor 2
4 is driven, and in conjunction with this, the drive roller 23 rotates forward. Then, the target slide table 18 includes a guide roller 19 and side guide rollers 20, 21.
It is supported and guided by the guide rail 10 via the guide rail 10 and protrudes toward the front of the shelf.

As shown by the imaginary line (A) in FIG. 7, when the slide table 18 is pulled out to the extension limit position, the magnet 30 reaches a position facing the front magnetic proximity switch 28, and the front magnetic proximity switch 28 The switch 28 is turned on from off, and a detection signal is sent to the control device 32. This results in
The control device 32 automatically stops driving the electric motor 24,
The slide table 18 is stopped at the protrusion limit position when the front side guide roller 20 comes into contact with the front stopper plate 16. At this time, even if you try to pull out another slide table 18 by operating the operation part 33, the electric motor 2
By setting the control device 32 so that the slide table 4 does not operate, even in the unlikely event of an erroneous operation, the operator who is loading and unloading articles to and from the slide table 18 that has already been pulled out can be Accidents such as the slide table 18 protruding and colliding with each other can be prevented.

After loading and unloading articles on the slide table 18 that has been pulled out as described above, when inserting the slide table 18 into the shelf, the operator must operate the operating section 33. , the electric motor 24 is driven, and the drive roller 23 is rotated rearward. The slide table 18 then moves into and out of the shelf frame 1.

As shown by the solid line (b) in FIG. 7, when the slide table 18 is inserted to the retraction limit position, the magnet 3
0 reaches a position opposite the rear magnetic proximity switch 29;
The rear magnetic proximity switch 29 is turned on from off, and 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 is stopped at the retraction limit position when the rear side guide roller 21 comes into contact with the rear stopper plate 17.

In the above embodiment, the magnetic proximity switches 28 and 29 were used as the detection section of the detection device, but a photoelectric switch may also be used instead.

[0022]

According to the present invention having the above structure, the slide table is provided with a drive roller and a drive device, and the control device automatically stops the slide table, which is movable in and out, at the extension limit position and the retraction limit position. By installing the slide table, there is no need for conventional electric tools to move the slide table in and out, and by operating the operation unit, the slide table can be moved in a high or low position regardless of the installation height of the slide table. It can be easily moved in and out.

[0023] Therefore, unlike in the past, a worker no longer operates a power tool by riding on a stand or crouching on the floor. There is no danger of dropping or dropping the power tool, and the work can be done safely and easily.

[Brief explanation of the drawing]

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

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

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

FIG. 4 is a partially cutaway view taken along line A-A in FIG. 1;

FIG. 5 is a view taken along the line BB in FIG. 2;

6 is a partially cutaway view taken along line CC in FIG. 2; FIG.

FIG. 7 is a schematic side view showing how the slide table moves in and out.

[Explanation of symbols]

1 Shelf frame 2 Front column 3 Intermediate column 4 Rear column 10 Guide rail 16 Front stopper plate 17 Rear stopper plate 18 Slide table 19 Guide roller 23 Drive roller 24 Electric 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)

[Claims] Claim 1: A pair of left and right guide rails are disposed in the front and back direction on the shelf frame, and a slide table supported and guided via a plurality of guide rollers is provided on these guide rails,
The slide table is provided with a drive roller that is rotatable in the front and rear directions on the guide rail and a drive device that is linked to the drive roller, and a detection device that detects the extension limit position and retraction limit position of the slide table. A shelf with a slide table, comprising: a control device that stops driving the drive device in response to a detection signal from the detection device; and an operation section that instructs the slide table to move in and out.