JPH0564105U - Dustproof device for stacker crane - Google Patents

Abstract

(57) [Summary] [Purpose] Stacker cranes used to supply materials from parts shelves to processes and to move products / semi-finished products from process to shelf or process in a clean room suppress dust generation from mechanical parts. It is necessary to prevent the generated dust from diffusing. In the inside of the cylindrical mast 5 which is the structural member of the load lifting mechanism, the up-and-down lifting table 17 blocks the inside of the cylindrical mast 5, making it difficult to collect dust in the space above the movable body. . [Structure] On the rear surface of the cylindrical mast 5, several openings having a size and shape suitable for absorbing dust are provided, for example, as a horizontally long prism. An air suction duct 6 is arranged at the rear of the cylindrical mast 5 along the cylindrical mast 5. The upper portion of the cylindrical mast 5 and the upper portion of the air suction duct 6 are closed, and the fan 14 is provided below the air suction duct 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stacker crane used in a clean room, particularly in an electronic component / element manufacturing process.

[0002]

[Prior art]

 Conventionally, electronic parts manufacturing processes are performed in a clean room with extremely reduced indoor dust. Stacker cranes are used for loading and unloading to supply materials from parts shelves to the work place in a clean room, and for loading and unloading to temporarily store finished products and semi-finished products between work places.The stacker crane suppresses dust generation from mechanical parts. It is necessary to prevent the diffusion of dust. JP-A-60-44403 and JP-A-60-44405 disclose stacker cranes used in a clean room.

[0003]

[Problems to be solved by the device]

 In the stacker crane described above, dust generated by the lifting mechanism of the load is collected by clean air or a fan from the ceiling to the floor. Inside the tubular body that is the structural member of the load lifting mechanism, the movable body that moves up and down closes the inside of the tubular body, making it difficult to collect dust in the space above the movable body. Especially when the movable body is descending, the dust collection effect is low. An object of the present invention is to efficiently collect dust in the space above the movable body.

[0004]

[Means for Solving the Problems]

 An elevating drive device is built in a cylindrical mast that is erected on a moving body, a slit that is continuous in the vertical direction is provided on the front surface of the cylindrical mast, and a lifting platform for a load that is inserted into the slit and that engages with the elevating drive device. In the stacker crane having the above, the air suction duct is provided on the rear surface of the cylindrical mast whose upper end is closed, and the rear surface of the cylindrical mast is provided with a plurality of openings vertically spaced to form the air suction duct. In addition to communicating with the air suction duct, the air suction duct is closed at its upper end and a fan is arranged so as to face the lower end.

[0005]

【Example】

 The present invention is shown in FIGS. The clean air 20 flows downward from a ceiling (not shown), passes through a lattice-shaped grating 21 arranged on the floor surface, and is sucked together with dust. An upper traveling rail 1 is arranged near the ceiling, and a traveling rail 16 is laid on the floor. The movable body 11 is provided with a traveling drive device 10 for driving the wheels by grounding the traveling wheels 13, 13, 13, 13 on the traveling rails 16 and 16, and is covered with a cover 12 for suppressing dust generation. The moving body 11 appropriately moves a component shelf, a loading / unloading port, and the like (not shown). A cylindrical mast 5 formed in a rectangular tube shape is fixed to the upper part of the moving body 11. The upper part of the cylindrical mast 5 engages with the upper traveling rail 1.

A slit 22 is provided in the longitudinal direction on the front surface of the cylindrical mast 5. The elevating table 17 supports the load 19, and further inserts through the slit 22 to engage with the elevating chain 4. An elevating table 17 in the cylindrical mast 5 has a plurality of guide rollers 8, and the guide rollers 8 slide along guide rails 7, 7, 7, 7 provided at opposite positions in the cylindrical mast 5. .. The upper end of the cylindrical mast 5 is closed, and the sprocket 2 is rotatably fixed in the upper and lower parts of the cylindrical mast 5. The lifting chain 4 is hung on the upper sprocket 2, one part of the lifting chain 4 is fixed to the upper part of the lifting table 17, and the other end of the lifting chain 4 is wound around the driving side sprockets 23 and 24 inside the moving body 11. Wear it and pass it through the lower sprocket 2 and fix it to the bottom of the lift 17. The lifting drive device 9 rotates the sprocket 24 via the drive chain 25 to drive the lifting chain 4 and move the lifting platform 17 up and down. At the rear part of the cylindrical mast 5, an air suction duct 6 whose upper end is closed is arranged along the cylindrical mast 5. On the rear surface of the cylindrical mast 5, several openings 3 having a size and shape suitable for dust absorption are provided, for example, as a horizontally long rectangular shape, and the cylindrical mast 5 and the air suction duct 6 are communicated with each other. The lower end of the air suction duct 6 communicates with the moving body, and a fan 14 is provided at an opposite position inside the moving body.

[0007]

[Work]

 The fan 14 is driven to suck the air in the air suction duct 6. The air containing dust generated in the lifting chain 4 and the like inside the cylindrical mast 5 is sucked into the air suction duct 6 through the opening 3 and exhausted from the fan 14 to the grating 21 on the floor. At this time, a filter may be provided below the fan 13 to collect dust. Therefore, when the fan 14 is driven, the inside of the cylindrical mast 5 becomes a negative pressure, and the clean air 20 blown from the ceiling is sucked through the slit 22 on the front surface of the cylindrical mast 5, so that the dust inside the cylindrical mast 5 leaks to the outside. Never.

[0008]

[Effect]

 Due to the opening 3 provided on the rear surface of the cylindrical mast 5 accommodating the lifting chains 4 and the like, the air suction duct 6 and the lower fan 14, dust in the space above the lifting table 17 inside the cylindrical mast 5 is also delayed. The air is sucked and exhausted without any action, and a stable dust collection effect can be exerted regardless of the position of the lifting table 17. Furthermore, by closing the upper ends of the cylindrical mast 5 and the air suction duct 6, dust in the space above the lift table 17 can be effectively sucked.

[0009]

[Brief description of drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of the present invention.

[Explanation of symbols]

 1 Upper Travel Rail 2 Sprocket 3 Opening 4 Elevating Chain 5 Cylindrical Mast 6 Air Suction Duct 7 Guide Rail 8 Guide Roller 9 Elevating Drive Device 10 Travel Drive Device 11 Moving Body 12 Cover 13 Travel Wheel 14 Fan 15 Shuttle Drive Device 16 Travel Rail 17 Lifting platform 18 Shuttle fork 19 Cargo 20 Clean air 21 Grating 22 Slit 23 Sprocket 24 Sprocket 25 Drive chain

Claims (1)

[Scope of utility model registration request] 1. An elevating drive device is built in a cylindrical mast that is erected on a moving body, and a slit continuous in the vertical direction is provided on the front surface of the cylindrical mast, and the slit is inserted through the slit and engaged with the elevating drive device. In a stacker crane having a lifting platform for loads, an air suction duct is provided side by side on a rear surface of a cylindrical mast whose upper end is closed, and a plurality of openings are formed on the rear surface of the cylindrical mast at intervals in the vertical direction. A dustproof device for a stacker crane, characterized in that it is connected to an air suction duct, the upper end of the air suction duct is closed, and a fan is arranged facing the lower end.