JPH05286516A - Dust dispersion preventing device for traveling truck - Google Patents

Abstract

PURPOSE:To prevent the dispersion of the dust which is produced between a guide rail in the lower part and traveling wheels placed on the guide rail and the dust produced by the revolution of the traveling wheels. CONSTITUTION:The dust produced between a guide rail 14 and traveling wheels 18 placed on the guide rail 14 and the dust produced by the revolution of the traveling wheel 18 are sucked, together with air, from a suction port 21, and after cleaned by a filter 24, the air is exhausted, and the dispersion of dust can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust scattering prevention device for a traveling carriage that can be effectively installed and utilized in a stacker crane or the like of an automatic warehouse that stores and stores articles that dislike dust.

[0002]

[Conventional automatic warehouse] The following are known as conventional automatic warehouses. That is, a pair of front and rear rack devices having a large number of article storage shelves vertically and horizontally provided at predetermined intervals in the front-rear direction, and left and right moving along the lower guide rail between the front and rear rack devices. The stacker crane is provided freely, and the stacker crane comprises a traveling carriage, an elevator that can be raised and lowered by a mast provided on the traveling carriage, and an article transfer provided on the elevator. A device having a mounting device (for example, a slide fork slidably provided in the front-rear direction) is known.

[0003]

BACKGROUND OF THE INVENTION In the above-mentioned automated warehouse, in the case of storing and storing articles that hate dust, such as semiconductor wafers, it is necessary to prevent dust from scattering in the automated warehouse. In such a case, it is necessary to prevent the dust generated between the lower guide rail and the traveling wheels mounted thereon and the dust generated by the rotation of the traveling wheels from scattering.

[0004]

In order to achieve the above object, the present invention employs the following means. According to the present invention, a traveling carriage that travels along a guide rail is hollow, and a suction port is formed in a portion of this traveling carriage where traveling wheels mounted on the guide rail are provided, and air is sucked from this suction port. Then, a suction device for exhausting air from the exhaust port formed in the traveling carriage is provided inside the traveling carriage, and the exhausted air is cleaned by the filter provided in the traveling carriage. is there.

[0005]

The present invention has the following functions. From the suction port formed in the part where the traveling wheel is provided, suck the dust generated between the guide rail and the traveling wheel mounted on it and the dust generated by the rotation of the traveling wheel together with the air. Since it is cleaned with a filter and exhausted, it is possible to prevent dust from scattering.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the lower side of FIG. 1, the rear means the upper side of FIG. 1, the left means the left side of FIG. 1, and the right means the right side of FIG.

As shown in FIGS. 1 to 3, a clean warehouse 1
A pair of front and rear horizontal walls 4 are provided above the floor 2 so as to form a predetermined gap 3 with the floor 2 so as to form a long opening 5 in the left-right direction between them. . A pair of front and rear rack devices 7 are provided on each of the pair of front and rear horizontal walls 4, and each rack device 7 has a large number of article storage shelves 8 vertically and horizontally.
The inlet / outlet ports 9 are opposite to each other. A fork passage gap 10 is formed in the article storage rack 8 to allow a slide fork 38, which will be described later, to move up and down. The articles W are placed and stored on the article storage rack 8.

As shown in FIG. 1, a pair of front and rear article loading / unloading stations 11 are provided on the right side of the clean warehouse 1.

As shown in FIGS. 3 to 5, a pair of upper and lower guide rails 14 which are long in the left-right direction are provided in the upper and lower portions of the center of the clean warehouse 1 in the front-rear direction.
A stacker crane 16 is guided to the left and right in a freely movable manner. More specifically, the stacker crane 16
Each of the lower left and right portions of the hollow traveling carriage 17 is provided with a traveling wheel 18 mounted on the lower guide rail 14 and a pair of sandwiching rollers 19 sandwiching the lower guide rail 14, and one of the traveling wheels 18 is It is adapted to be rotated by a motor 20 which is housed and installed in the traveling carriage 17 and which can be rotated normally and reversely. Further, a pair of right and left nipping rollers 25 nipping the upper guide rail 14 is provided on the upper end of a mast 28 described later.

As shown in FIGS. 4 and 5, the traveling carriage 17
A suction port 21 is provided at the bottom of the vehicle where the traveling wheels 18 are provided.
A suction device 23 for sucking air from these suction ports 21 and exhausting air from an exhaust port 22 formed in the traveling carriage 17 is provided in the traveling carriage 17. A filter 24 is attached to the exhaust port 22. With such a configuration, dust generated between the lower guide rail 14 and the traveling wheel 18 or the sandwiching roller 19 or dust generated by the rotation of the traveling wheel 18 or the sandwiching roller 19 is discharged from the suction port 21. It is possible to prevent the scattering of dust by sucking in all the air, cleansing it with the filter 24 and exhausting it.

As shown in FIGS. 4 and 6, a mast 28 is provided on the traveling carriage 17 so as to communicate therewith. The mast 28 has a tubular shape with its upper end closed and its lower end open. A slit 29 is formed in the mast 28 along the height direction thereof, and a hollow guided portion 31 that is communicated and connected to the hollow elevating table 30 through the slit 29 is housed in the mast 28. The hollow guided portion 31 is provided on the roller 3
It is configured to move up and down along a guide rail 33 provided inside the mast 28 via the guide rail 2. The hollow elevator 30 is moved up and down by a known elevator 35. The air in the mast 28 is sucked by the suction device 23.

As shown in FIGS. 4 and 6, a slide fork 38, which is an article transfer device, is attached to the hollow elevator 30.
Is horizontally slidably provided so as to horizontally project in both front and rear. As is well known, the slide fork 20 projects the article W downward, lifts the article W by raising the hollow elevating table 30 and retracts the article W to the hollow elevating table 30 side to hollow the article W. Of the article W on the article storage rack 8 or the like by the reverse operation.
Can be lowered. The article transfer device is not limited to the slide fork 20 and may be a robot hand.

An air ejection port 51 is formed on the left side of the upper wall of the hollow elevator 30 and a vertical duct 52 is connected to the air ejection port 51. A downward air ejection port 54 is provided at the upper end of the vertical duct 52. The horizontal duct 53 which it has is connected. A filter 55 such as a hepa filter is attached to the air ejection port 54 of the horizontal duct 53. It should be noted that the filter 55 may be provided in the air passage 56 formed by the hollow lift table 30, the vertical duct 52, and the horizontal duct 53 so as to cross the air passage 56. A vertical wall 58 is provided across the right side of the upper wall of the hollow elevator 30 and the right side of the horizontal duct 53 so as to face the vertical duct 52. The vertical wall 58
Is a part of the vertical wall of the hollow guided portion 31. With such a configuration, the hollow elevator 30, the vertical duct 52, the horizontal duct 53, and the vertical wall 5
8 forms an article storage space that penetrates in the front-rear direction. A fan 57 for ejecting air from the air ejection port 54 of the horizontal duct 53 is provided on the hollow elevator 30. With the configuration as described above, clean air is passed through the horizontal duct 5
3 is blown downward from the air jet port 54, and the slit 4
It is possible to suck the air from 7 into the hollow elevating table 30, create a flow of clean air from the top to the bottom in the space above the slide fork 38 (article storage space), and keep the space clean.

The lifting device 35 has a required number of suction ports 39.
Are formed. In addition, an air passage 40 that opens into the mast 28 is formed in the hollow guided portion 31. With such a configuration, the suction device 23 sucks the air in the upper part of the hollow elevating table 30 to suck the mast 28.
The air above the hollow lift table 30 can be cleaned by drawing it in.

Next, a structure for creating a constant air flow in the clean warehouse 1 will be described. As shown in FIG. 3, an air passage 41 is defined between the front wall of the clean warehouse 1 above the horizontal wall 4 and the rack device 7 so as to form a flat filter 42 and a net / perforated plate. Board 4
3 is provided vertically in the clean warehouse 1, and similarly, an air passage 41 is defined between the rear wall of the clean warehouse 1 above the horizontal wall 4 and the rack device 7 so as to form a flat plate. A filter 42 and a straightening plate 43 including a net and a perforated plate are provided vertically in the clean warehouse 1.
A required number of openings 44 opening in the air passage 41 are formed in the horizontal wall 4 (see also FIG. 1).

A vertical partition plate 45 is provided so as to demarcate the gap 3 at the bottom of each of the horizontal walls 4 in the front-rear direction, and a required number of openings 46 are formed in this partition plate 45, and a fan 47 is formed in these openings 46. The discharge port of is connected. A vertical filter 48 is provided so as to define the opening 46 and the opening 44. A space provided below the horizontal wall 4 in which a fan 47 is provided and a lower guide rail 1
The horizontal wall 4
A flat plate-shaped filter 49 is vertically provided in the clean warehouse 1 so as to extend across the edge of the stacker crane 16 side and the floor 2. With such a configuration, the air ejected from the fan 47 rises in the air passage 41, passes through the article storage rack 8, and then the front and rear rack devices 7 are provided.
It circulates through a path that goes downward through the space between and is sucked again by the fan 47. Then, the air is purified while passing through the filter 49 and the filter 48.

[0017]

The present invention has the following effects due to the above-mentioned configuration. From the suction port formed in the part where the traveling wheel is provided, suck the dust generated between the guide rail and the traveling wheel mounted on it and the dust generated by the rotation of the traveling wheel together with the air. Since it is cleaned with a filter and exhausted, it is possible to prevent dust from scattering.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged cross-sectional view of an intermediate illustration along line III-III of FIG.

FIG. 4 is an enlarged vertical sectional view of a stacker crane.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 14 Guide Rail 16 Stacker Crane 17 Traveling Cart 18 Traveling Wheel 21 Suction Port 22 Exhaust Port 23 Suction Device 24 Filter

Claims (1)

[Claims] 1. A traveling carriage that travels along a guide rail is hollow, and a suction port is formed in a portion of this traveling carriage where traveling wheels mounted on the guide rail are provided. A suction device for sucking and exhausting air from an exhaust port formed in the traveling carriage is provided in the traveling carriage, and the exhausted air is cleaned by a filter provided in the traveling carriage. Dust scattering prevention device for trucks.