JPH0653079U - Clean bench - Google Patents

Abstract

(57) [Summary] [Purpose] To create a clean zone with a simple device that does not require special restrictions or restraints on workers and allows large-scale and complicated continuous processes. [Structure] The clean bench includes a drive roller conveyor that allows air to flow above and below the conveyor, a work table provided along the drive roller conveyor, a transparent cover body that covers the drive roller conveyor and the work table, a fan and a filter. It has a circulation filter section. The circulation filter section is provided with an external air suction port outside the apparatus and a duct that communicates with the air suction port opened on the entire lower surface of the drive roller conveyor. Further, the circulation filter section opens an air outlet in a clean zone above the drive roller conveyor surrounded by the transparent cover body.
This forms a conveyor air flow passage and an external air flow passage. The transparent cover body can be retracted into the ceiling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clean bench that creates a clean atmosphere required in a manufacturing environment for electronic devices, optical parts, bio-related parts, and the like.

[0002]

[Prior art]

 Electronic devices, optical parts, and technical parts such as biotechnology require the integration and assembly of small parts and unit processes.

In order to improve precision and product yield, more and more parts are required to be manufactured in a highly clean atmosphere, and in order to create such an atmosphere, a large clean room or a large clean room is required. Or, a clean bench for each workbench is required.

The conventionally known clean bench is usually used by itself as one independent workbench for the purpose of accumulating parts and unit processes on a small scale.

Such a clean bench is provided with a workbench, a fan sucking from the lower part of the workbench, and a filter, and blows filtered air through the filter from the rear on the workbench.

[0006] In addition, since it is difficult to unmanner a clean room that cleans the entire room, a human being who is a worker becomes a large source of dust. It is required to be isolated and restrained for strict dust-proof measures such as changing clothes and air showers.

[0007]

[Problems to be solved by this device]

 Since the conventional clean room becomes large in scale, the equipment cost becomes enormous, and it is often difficult to maintain and maintain the cleanliness.

Further, there is a problem that it is difficult to easily cope with a layout change in the manufacturing work.

Furthermore, recently, a more comfortable work environment has been demanded by comparison with other work environments, and this has become an issue such as labor management for young people.

[0010] Especially for highly accurate work in a clean room, good eyes of a young woman, skilled dexterity and patience are particularly required. However, it has been difficult to enter the work for a long time in a severe working environment, which is different from the above.

In addition, a clean bench that performs a small-scale work may be performed using a plurality of work benches in the case of a larger-scale component and unit work accumulation work.

In this case, the work-in-progress product in the process of assembling must be once taken out of the clean zone of the clean bench, and put in another clean bench again to perform the next step. Therefore, there was a problem that it was necessary to maintain the same degree of cleanliness around the clean bench and the atmosphere. In this case, as a result, it is more rational to use a normal workbench in a known clean room that cleans the entire room, and there is a problem that multiple clean benches cannot counter the environment of the clean room.

An object of the present invention is to create a clean zone with a simple device, which does not require special restrictions or restraints on the work of a worker and can perform a large-scale and complicated continuous process.

[0014]

[Means for Solving the Problems] In order to achieve this object, the clean bench of the present invention comprises a conveyor that allows air to flow above and below the conveyor, a work table provided along the conveyor, a conveyor and a work table. It has a cover that covers the upper space, a circulation filter with a fan and a filter, and the circulation filter communicates with an external air intake opening to the outside of the equipment and an air intake opening on the bottom surface of the conveyor. And the air outlet is opened above the conveyor.

Further, the clean bench of the present invention includes a drive roller conveyor capable of circulating air above and below the conveyor, a work table provided along the drive roller conveyor, a transparent cover body covering the drive roller conveyor and the work table. , A circulation filter section having a fan and a filter, and the circulation filtration section is provided with an external air suction port outside the device and a duct communicating with the air suction port opening on the entire lower surface of the drive roller conveyor, and the transparent filter. An air outlet is opened in the clean zone above the workbench and the drive roller conveyor surrounded by the bar body to form a conveyor air flow passage and an external air flow passage.

[0016]

[Action]

 Dust (dust) is generated by the operation of the conveyor, and the air containing this dust is sucked by the fan from the air intake port that opens on the lower surface of the conveyor to the circulation filtration unit through the Conveer air flow passage that passes through the duct. It

The air containing the dust is filtered by the air pressure of the fan through the filter. The air that has passed through the filter and has been dedusted is blown from the air outlet to the clean zone on the workbench and the conveyor, and part of it again passes through the conveyor from top to bottom and is sucked into the conveyor air flow passage.

Another part of the air blown to the clean zone on the workbench and the conveyor is blown out to the installation room through the external blow-out port under the cover body.

Further, the air in the installation room is sucked by the fan from the external air suction port and enters the flow filtering section. Here, it mixes with the air in the conveyor air flow path, this air is similarly filtered by a filter, and then blown into the clean zone.

By repeating this operation, it is possible to maintain clean air from which dust has been removed in the clean zone.

[0021]

【Example】

 An embodiment of the clean bench of the present invention will be described based on FIG. 1 which is a side view, FIG. 2 which is a front view, and FIG. 3 which is a perspective view.

Reference numeral 1 is a workbench, 2 is a drive roller conveyor, 3 is a flow filter, 4 is a transparent cover, 5 is a dust suction duct, and 15 is a ceiling.

The workbench 1 is provided according to the working height of the worker.

The drive roller conveyor 2 is provided on the left and right sides of the work table 1 as viewed from the operator.

The drive roller conveyor 2 is provided with two drive roller conveyors in parallel in this embodiment, but may be provided in one row. In addition, as another embodiment, a drive type conveyor may be used as long as the circulation of upper and lower air is sufficient, and for example, a mesh conveyor may be used.

The drive roller conveyor 2 of this embodiment is made of stainless steel with a roller diameter of 18φ, and the rollers are arranged at a pitch of 20 mm.

The drive type of the drive roller conveyor 2 is such that, in this embodiment, a drive belt (not shown) operated by an electric motor (not shown), which is a drive unit, is provided below the drive roller conveyor 2 in contact with the rollers. Drive each roller.

The dust air suction port 7 of the conveyor air flow passage 6 is opened over the lower surface of the drive roller conveyor 2 and communicates with the circulation filter unit 3 through the dust suction duct 5.

The circulation filter unit 3 is a space provided behind the workbench 1 and the drive roller conveyor 2, forming a part of a common flow passage for the external air flow passage 8 and the conveyor air flow passage 6.

The circulation filter 3 is provided with a fan 10 at the bottom and a filter 11 at the top. The filter 11 is provided over almost the entire length of the drive roller conveyor 2.

A suction port 9 of the external air flow passage 8 is provided at the lowermost portion of the circulation filter unit 3 by opening it to the left and right of the workbench 1.

The upper portion of the circulation filter unit 3 is opened in a plane perpendicular to the drive roller conveyor 2, and forms an external air flow passage 8 and an air outlet 12 of the conveyor air flow passage 6. In another embodiment, the air outlet 12 may be opened on the lower surface of the ceiling portion 15 of the drive roller conveyor 2. The filter 11 is installed at or near the air outlet 12.

The fan 10 may be of any type, and is installed, for example, in the center so that the suction can be performed as uniformly as possible.

The filter 11 is a dust-proof filter, and in this embodiment, it has a mesh for filtering particles of 0.1 μm with a collection efficiency of 99.999% or more, and the air outlet 12 of the circulation filter 3 is used. To be installed.

The transparent cover body 4 is formed of a transparent plate-like body of acrylic resin or the like, and is provided so that the end side thereof projects obliquely downward and the workbench 1 is covered from above. The transparent cover body 4 can be pulled out by a sliding roller provided on the ceiling portion 15, and can be pulled out to the operator side by about 400 mm. Further, when pushed into the ceiling portion 15 most, an opening of about 300 mm is formed between the lower edge of the plate-like body and the upper surface of the workbench 1 to form the external outlet 13.

A space surrounded by the workbench 1, the drive roller conveyor 2, the outlet 12 of the circulation filter 3, the ceiling 15 and the transparent cover 4 is a clean zone 14.

In the ceiling portion 15, a fluorescent lamp is provided on the lower surface in addition to a space for accommodating the transparent cover body 4.

Next, the operation of this invention will be described.

By operating the fan 10, the air inside the conveyor air flow passage 6 and the outside air flow passage 8 flows.

When the drive roller conveyor 2 is operated, a large amount of very fine dust is generated. The air containing the dust (dust air) is immediately sucked into the air suction port 7 because the air suction port 7 of the conveyor air flow passage 6 is opened over almost the entire lower surface of the drive roller conveyor 2. , Passes through the dust suction duct 5 and enters the circulation filter unit 3. The dust air rises in the circulation filter unit 3 by the pressure of the fan 10 and passes through the filter 11 to be filtered to become dust-removed air (clean air). Clean air is blown into the clean zone 14 from the air outlet 12.

A portion of this clean air is again sucked in through the air suction port 7, and similarly blows out into the clean zone 14 through the air blowing port 12.

Further, another part of the clean air is blown out from the external blow-out port 13 below the transparent cover body 4 to clean the air in the working chamber as well.

Then, the air in the general working chamber is sucked from the air suction port 9 into the ventilation filter 3 by the fan 10, mixed with the dust air from the dust suction duct 5, and filtered through the filter 11. Then, it is blown out as clean air from the air outlet 12 into the clean zone 14.

Since the dust generated by the drive roller conveyor 2 is immediately sucked to the lower side of the roller conveyor without going to the workbench 1, the air in the clean zone 14 is clean. At the same time, the dust-containing air in the work chamber is also sucked into the circulation filter unit 3, so that dust can be removed from the air in the room.

Normally, the work is performed with the transparent cover body 4 being pushed into the ceiling portion 15, and the operator inserts only his / her hands equipped with clean gloves into the clean zone 14 to remove the transparent cover body from the outside. Work while watching the parts.

However, when working using a special instrument such as a microscope or when working with the naked eye directly without passing through the transparent cover body, pull out the transparent cover body 4 from the ceiling portion 15. The clean zone 14 is widely expanded, and workers enter the expanded clean zone 14 to perform work. In this case, the worker should wear dustproof clothing on the upper body or wear the same clothes as in a normal clean room.

As shown in FIG. 3, a plurality of required numbers of the clean benches of the present invention can be moved between the clean benches while the parts are placed on the conveyor which is the clean zone. Therefore, it is possible to create a clean zone such as a clean room, and to increase or decrease the number of units to respond to production plans and design changes relatively easily.

[0048]

[Effect of device]

 According to this invention, it is possible to perform work in the clean zone on each workbench and also to transport parts between works in the clean zone, which is not possible with a conventional single clean bench. It is now possible to work in large-scale and complicated continuous process clean zones.

In addition, since there is no need for special restrictions or restraints on the worker's work such as air shower or change of clothes, the work can be performed with limited and simple equipment such as clean gloves. This has the effect of greatly improving work efficiency and labor management.

Furthermore, by pulling out the transparent cover body, the clean zone can be widened, and the same work as in a normal clean room can be performed.

[Brief description of drawings]

FIG. 1 is a side view for explaining an embodiment of a clean bench,

[FIG. 2] Similarly, a front view,

FIG. 3 is a perspective view when the clean benches are lined up.

[Explanation of symbols]

 1 Working Table 2 Drive Roller Conveyor 3 Flow Filter 4 Transparent Cover 5 Dust Suction Duct 6 Conveyor Air Flow Passage 7 Air Inlet 8 External Air Flow Passage 9 Air Inlet 10 Fan 11 Filter 12 Air Outlet 13 External Outlet 14 Clean Zone 15 Ceiling

Claims (3)

[Scope of utility model registration request] 1. A conveyor which allows air to flow above and below the conveyor, a work table provided along the conveyor, a cover body for covering the conveyor and an upper space of the work table, and a circulation filter section having a fan and a filter. However, the circulation filter section is provided with an external air suction port opening to the outside of the apparatus and a duct communicating with the air suction port opening on the lower surface of the conveyer, and a clean air discharge port is opened above the conveyer. bench. 2. A distribution having a drive roller conveyor capable of circulating air above and below the conveyor, a work table provided along the drive roller conveyor, a transparent cover body covering the drive roller conveyor and the work table, a fan and a filter. The flow filter has a filter part, and the flow filter part is provided with an external air suction port outside the device and a duct communicating with an air suction port opening on the entire lower surface of the drive roller conveyor, and is surrounded by a transparent cover body. A clean bench characterized in that an air outlet is opened in an upper clean zone to form a conveyor air flow passage and an external air flow passage. 3. A distribution having a drive roller conveyor capable of circulating air above and below the conveyor, a work table provided along the drive roller conveyor, a transparent cover body covering the drive roller conveyor and the work table, a fan and a filter. The flow filter has a filter part, and the flow filter part is provided with an external air suction port outside the device and a duct communicating with an air suction port opening on the entire lower surface of the drive roller conveyor, and is surrounded by a transparent cover body. A clean bench, characterized in that an air outlet is opened in an upper clean zone to form a conveyor air flow passage and an external air flow passage, and a transparent cover body can be retracted from a ceiling portion.