JPH02100919A - Conveyer and conveyer unit provided with air cleaning and carrying passage - Google Patents

Abstract

PURPOSE:To improve the design freedom and cleanliness for a line and make an equipment small by connectingly arranging required quantities of conveyer unit for storing a conveyer mechanism and an air cleaning mechanism in a cover, in the conveyer in the title for electronic parts and so on. CONSTITUTION:A conveyer mechanism part 4 consisting of rollers 11, a drive main shaft 14, toroid belts 16 and so on is arranged in a box type cover 3 so as to form a carrying passage 5 above the conveyer mechanism part 4 and also an air cleaning mechanism part 6 consisting of a fan 7 and a filter 8 is arranged so as to form a conveyer unit 1. This conveyer unit 1 is connectingly arranged so as to compose a conveyer unit 1 is connectingly arranged so as to compose a conveyer line. By this constitution, as the line is formed by the connection of the conveyer unit, design freedom is improved and high cleanliness is realized and also the line suitable for a small scale production can be obtained.

Description

[Detailed description of the invention] [Industrial application field] This invention is applicable to electronic parts, precision parts, and automobile parts.

PHARMACEUTICALS 1 Concerns a conveyor and conveyor unit with an air-purifying conveyance path suitable for conveying articles such as food products.

[Conventional technology]

Transportation, processing, or assembly of electronic parts, precision parts, automobile parts, pharmaceuticals, food products, etc.

Quality control when performing a series of processes such as inspection.

It is necessary to prevent dust from entering the transported goods from boiling water for sanitary purposes. Therefore, conventionally, these items have been transported, processed, inspected, assembled, etc. in a clean room.

Conventionally, conveyance mechanisms for conveying articles within this clean room include, for example, roller conveyors and held conveyors. In conventional roller conveyors and heald conveyors, a rotating shaft fitted with rollers is rotatably installed between opposing frames, and the driving force of a motor, etc. is transmitted to a chain, chain wheel, heald, pulley, etc. Power was transmitted through a power transmission component, and the rotating shaft rotated together with the rollers to convey the article.

By the way, this type of conveyor has a structure in which articles are conveyed by rotating a large number of rotating shafts synchronously using the driving force of a motor. When a stopping force is applied from the outside, the rollers continue to be rotated by the driving force of the motor, so that the 71'hl article collides with the preceding article on the line, causing confusion in the conveyed articles.

Therefore, it has been impossible to transport articles in multiple rows and to set up independent lines with one machine. You can also increase or decrease the conveyance speed of any part of one conveyor, etc.
It was not suitable for controlling the speed of the conveyor surface of the stand conveyor. For this reason, in order to convey articles in multiple lines at the same time, it is necessary to install means for sorting on the line, or to install guide plates to separate the conveyance path of the articles. Since it was necessary to align the articles, it was not possible to cover the conveying surface of the articles with a cover.

An example of a new type of roller conveyor invented to correct the above-mentioned drawbacks of the conventional roller conveyor is the conveyor described in Japanese Patent Publication No. 55-1.6932.

This conveyor is rotatably driven by friction when a part of the inner periphery contacts the outer periphery of the rotating shaft that is rotatably installed between frames, conveying the article, and applying a stopping force from the outside. a plurality of divided rollers that make the rotating shaft idle and keep the article stationary; a motor as a driving source; a common driving main shaft that rotates passively with rotation from the motor; and a joint between the driving main shaft and the rotating shaft. The drive mechanism includes a wear-resistant toroid belt that is wound between the shaft ends and transmits power from the motor.

When the shared drive shaft is rotated by the driving force from the motor, each of the multiple rotating shafts installed between the frames is rotated via the toroid belt wound around this drive shaft, so this rotation A large number of divided rollers, each of which has a part of its inner periphery in contact with the shaft, rotates due to friction with the rotating shaft, so the articles placed on the rollers are aligned and conveyed in multiple rows, one row at a time. Ru.

Furthermore, when an external stopping force is applied to the articles using a stopper or the like to stop the articles, the rollers on which the articles are placed are brought to a standstill, but since the rotating shaft rotates, only the articles in the desired row are stopped and are on the same line. Passive articles could thus be transported independently of stationary articles.

[Problem to be solved by the invention]

However, when transporting, processing, assembling, and inspecting items such as electronic components in a clean room, a large-scale or lean room is required, as well as a large-capacity room to purify the air inside the clean room. Since air purification equipment is required, there is a problem that the equipment and devices become large-scale and expensive.

Furthermore, in order to maintain highly clean air in the clean room, the air purifier must be operated for a long time, which requires a lot of time and money.

Moreover, since humans, who are the source of high levels of dust, must go in and out of the clean room to perform work, there is a problem in that it is extremely difficult to maintain a high degree of cleanliness within the clean room.

The present invention has been made in view of the above-mentioned points, and has a degree of freedom in line design, and also eliminates the need for large-scale equipment by shafting out humans, who are a source of high dust generation. It can easily and reliably maintain a high level of cleanliness, is suitable for small-scale productivity, and is low cost. Furthermore, even when covered with a cover, it is suitable for transporting items on the same line, inspection and assembly, etc., increasing production efficiency. An object of the present invention is to provide a conveyor and a conveyor unit equipped with an air purifying conveying passageway capable of improving air purification.

By the way, the above-mentioned conveyor described in Japanese Patent Publication No. 55-16932 has the following features: (1) Since it can reliably convey multiple rows of articles by aligning them on the same line, it is possible to set up multiple rows and independent lines with one conveyor. By applying an external stopping force, it is possible to freely stop or restart articles anywhere on the conveyor surface, eliminating the need to stop the entire line and improving production efficiency. C. Increase speed anywhere on the conveyor surface.

The conveyance speed can be easily controlled, such as by being able to decelerate. 2. The large number of rollers that convey the article are fitted into the rotating shaft, so only a portion of the inner circumference contacts the rotating shaft. It was found that it has advantages such as smooth rotation and low noise.

The present invention has been made in view of the above-mentioned points, and has a degree of freedom in line design, and also eliminates the need for large-scale equipment by shafting out humans, who are a source of high dust generation. It can easily and reliably maintain a high level of cleanliness, is suitable for small-scale productivity, and is inexpensive. Furthermore, even when covered with a cover, it is suitable for transporting items on the same line, inspection and assembly, etc., increasing production efficiency. An object of the present invention is to provide a conveyor and a conveyor unit equipped with an air purifying conveying passageway capable of improving air purification.

[Means to solve the problem]

The present invention utilizes the advantages of the above-mentioned conveyor to provide a large number of rotating shafts that are rotatably installed between frames; a part of the inner circumference of the rotating shaft is rotatably inserted loosely into the rotating shaft, and a part of the inner circumference contacts the outer circumference of the rotating shaft, causing friction. A large number of divided rollers that rotate by the rotary shaft and when a stopping force is applied from the outside, the rotary shaft idles and stops the article; a motor as a driving source; a shared driving main shaft that receives rotation from the motor and rotates; and the driving shaft. A conveyor mechanism is constituted by a main shaft and a drive mechanism having a toroid belt made of wear-resistant material that is wound between the shaft ends of the rotating shaft and transmits power from the motor, and the conveyor mechanism is covered. A means of continuously connecting a conveyor unit installed inside the cover to form a conveyance passage within the cover, and forming an air purification mechanism with a blower that purifies the air in the conveyance passage and a filter that captures dust. was adopted.

[For production]

A blower blows air from above perpendicular to the conveyance surface of the conveyor passage of the conveyor mechanism installed inside the approximately box-shaped cover, and the dust contained in the conveyance passage is blown out from inside the cover. The air within the conveyance path is purified to a high degree of cleanliness.

Then, the motor of the conveyor mechanism is driven to rotate the shared drive shaft, and multiple rotating shafts are rotated via the toroid belt, which is a wear-resistant power transmission part, wrapped around this drive shaft. A large number of divided rollers are rotated by friction with a rotating shaft, and articles can be transported in multiple rows on the same line within a highly purified transport path.

Further, when an external stopping force is applied to articles in a desired row within the cover, the rotating shaft rotates with respect to the rollers by the driving force of the motor, so that only the articles in the desired row can be kept stationary. In addition, passively moving articles on the same line are conveyed through a highly purified conveying path regardless of stationary articles, and no confusion occurs during conveyance of articles.

In this way, humans who are a source of high dust levels are removed from inside the cover, and only the desired rows of articles are processed while the articles are being conveyed in multiple rows in the cleaned conveyance path.

Inspection 9 Assembly can be performed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

This embodiment is formed by consecutively connecting a large number of conveyor units 1 in an appropriate number and in a desired row depending on the number and length of lines to be installed.

The conveyor unit 1 is constructed by arranging a conveyor mechanism 4 inside a substantially box-shaped cover 3 which has several legs 2 attached and has openings 3a and 3b at the front and rear, and is surrounded by the cover 3 on top of the conveyor mechanism 4. A conveying path 5 is formed.

Reference numeral 6 denotes an air purification mechanism section for purifying the air in the conveyance path 5, and this air purification mechanism section 6 supplies purified air from above to the conveyance surface 5a of the conveyor mechanism section 4 into the conveyance path 5. It is formed of an air blower 7 that blows air toward the conveying surface 5a, and an air filter 8 provided in the middle of the air passage 5, for example, on the internal ceiling surface of the cover 3.

For example, the blower 7 is of a blowing type, and this blower 7 is installed on the ceiling of the cover 3, and blows out the purified air S uniformly and perpendicularly to the conveying surface 5a.
The air in the conveyance path 5 is purified, and the floating of dust on the conveyance surface 5a of the conveyor mechanism section 4 and adhesion to the articles A are completely suppressed.

The air filter 8 is so-called HEPA.

Filters such as ULPA are used, and filters with different passing pore densities are selected and used to trap dust of different particle sizes depending on the degree of purification of the air required in the conveyance passage 5.

Further, the conveyance passage for the purified air S blown out to the ventilation passage 5 may be of a circulation type in which the purified air S circulates, or the purified air S is blown inside the cover 3 from the upper side to the lower side, and the air is blown. A non-circulation type may be used in which dust in the passage 5 is blown out.

The size of the conveyor unit 1 is approximately 1,750 mm in height, 596 mm in width, and approximately 1,500 mm in width in the non-circulating standard configuration shown in the figure. The height of the mechanism section 4 to the conveying surface 5a is approximately 850mm.

The conveyor mechanism section 4 is formed of a metal plate,
A frame 9.9 facing each other, a large number of rotating shafts 1o rotatably and detachably installed on the frame 9.9,
A large number of divided rollers 11 are inserted into the rotary shaft 1o so as to freely rotate adjacent to each other, and a motor M as a drive source is provided at the lower part of the frames 9 of the conveyor unit 1 as necessary. , and the motor M is connected to the cheno 12.
It is wound between a shared drive shaft 14 that rotates via power transmission parts such as cheno wheels 13a and 13b, and a pulley 15 attached to the shaft end of the rotating shaft 10, and receives the power from the motor M. The drive mechanism section 17 includes a toroidal belt 16 made of a wear-resistant material that rotates while being transmitted to a large number of rotating shafts 10.

The rotating ring 10 is made of stainless steel and has an outer diameter of about 6.5 mm.
The upper edge of the frames 9, 9 is made of 35 mm (% inch) using a bearing material 18.18 made of plastic and provided with a small hole 18a for inserting the rotating shaft 1o, and a support bar 19. It is rotatably and removably attached to the

The roller 11 is formed of an inner sleeve 2° made of plastic that is rotatably supported on the rotating shaft 1o, and an outer sleeve 21 made of a material such as rubber that is fixed around the inner sleeve 20. be done. Among these, the inner diameter of the inner sleeve 2o is larger than the outer diameter of the rotating shaft 10,
The roller 11 is rotated and driven by a portion of its inner circumference coming into contact with the rotating shaft 10 and obtaining a driving force from the rotating shaft 10 due to friction. Furthermore, when a stopping force is applied to the article A to be conveyed from outside the conveyor unit 1 by making a stopper material (not shown) etc. protrude freely from the rotating shaft 10, 10, etc., the article A is placed on the conveyor unit 1. The roller 11 that is placed on it is stationary due to friction caused by contact with the article A, but the roller 11 on which the article A is not placed and the passive roller 11 are rotated by receiving the driving force from the motor M. Since it continues to rotate due to friction with the shaft 10, only the desired row of articles A on the same line where the conveying surface 5a is covered with the cover 3 can be processed and inspected while covered with the cover 3 without causing any confusion. 1. Can stand still during assembly, etc., and can also be processed.

If inspection 2 and assembly are not required, article A on the other side of the same line covered with cover 3 can be transported.

In order to prevent the conveyed article A from being tilted on the conveying surface 5a during conveyance, the article A is always kept at least three angles in the conveying direction.
Although it is desirable that the rollers 11 be supported by a large number of rotating shafts 10, the multiple rotating shafts 10 installed between the frames 9 and 9 so as to rotatably support the rollers 11 are supported at sufficient intervals. A gap 22 sufficient for blowing out purified air by the blower 7 from above in the vertical direction is provided with respect to the conveying surface 5a of the mechanism section 4.

Reference numeral 23 is provided on one or both sides of the cover 3 as necessary in order to see through the inside of the cover 3 and check the transportation status of the article A by the conveyor mechanism section 4, as well as to facilitate and ensure inspection, processing, and assembly. In the window section 23, an uncharged transparent acrylic board is stretched over the window section 23 to have high transparency and to prevent dust from adhering to the window section 23 due to static electricity. Moreover, it is also conceivable that the acrylic plate may be provided with several holes (not shown) through which hands can be inserted, as necessary, when necessary for inspection, processing, and assembly operations. In this case, the hole is covered with a shielding means such as a curtain or an air shower in order to isolate the passageway 5 from the outside and maintain highly purified air inside the conveyance passageway 5.

Reference numeral 24 denotes a baffle plate provided at the lower part of the air outlet 25 as necessary, and this baffle plate 24 is for uniformizing the airflow distribution of the purified air S to the conveyance surface 5a on which the article A is conveyed. It is. Reference numeral 26 denotes a lamp that illuminates the inside of the conveyance path 5.

One embodiment of the present invention has the above-mentioned configuration, and the conveyor
An appropriate number of units 1 in a desired row depending on the number of lines to be installed and the length of the lines are connected in series and put into use. At this time, openings 3a on the start and end sides of the conveyance path 5.5 of the conveyor unit 1.1 at the start and end positions in order to maintain the tightness of the connected conveyance path 5 as necessary; For example, an air shower, a curtain, a door, etc. are used to isolate the transport passages 5, 5 from the outside so as to isolate the transport passages 3b from the outside air.

After assembling the continuous conveyance passage 5 and conveyor mechanism part 4 in the continuous cover 3, air is blown by the blower 7, and the dust of the required particle size is captured by the air filter 8.
The purified air S is uniformly diffused and blown out through the baffle plate 24 in a direction perpendicular to the conveyance surface 5a of the conveyor mechanism section 4, for example from above.

At this time, the roller 11 in the conveyance direction of the conveyor mechanism section 4
Since a sufficient gap 22 is formed between them, the purified air S passes through this gap 22 and the gap 9a between the frame 9.9 and the roller 11 to generate a downward -1 vortex on the conveying surface 5a of the conveyor. The article A passes through the article A quickly with a uniform airflow distribution without causing any hindrance to the conveyance of the article A.

Therefore, by blowing away dust with the purified air S, the air within the conveyance path 5 through which the article A is conveyed is maintained at a high degree of purity.

In addition, the drive mechanism section 17 of the present invention has a toroid belt 16 which is wear-resistant and elastic and is wound around the common drive shaft 14 and pulley 15, so that the power from the motor M is synchronized. It can be effectively transmitted to the rotation axis lO. However, the toroid belt 16 has a small diameter of about 3.2 fins, has a small contact area with the common drive shaft 14 and the pulley 15, and is made of wear-resistant plastic 7 such as urethane resin.
Since it is made of a wear-resistant material such as a belt and a pulley, there is less generation of wear debris with the drive main shaft 14, which is shared with conventional power transmission parts such as belts and pulleys. Moreover, the bearing material 18 of this embodiment is made of plastic and has a small hole 18a formed therein to rotatably support the rotary shaft 10, and is detachably attached to the frame 9.9, unlike the conventional structure. Since it is not an oil-impregnated bearing and is different from power transmission parts such as chenos and cheno wheels that require lubrication, the use of oil can clean out parts where dirt and dust are concentrated.

Therefore, it is possible to suppress dust from rising into the transport passage 5, and the air within the transport passage 5 can be maintained at a high degree of purification. The degree of air purification in the transport path 5 of the conveyor of this example was measured at the measurement locations a - f in the figure under the following conditions. (Conditions) Capacity of blower 7 15 rrf/min x 15
mmAq Power status 3φ200V Air filter 8 efficiency 99.97% (≧0.3μm)
HEPA filter sample flow Ml 1 f t'3/min Measurement time 1 minute/time Measurement Particle size 0.3 μm or more Aggregation method 0.3 μm, 0.5 μm class display Measuring instrument Particle counter Tr type micro anemometer Transport passage 5 The following table (1) was obtained regarding the degree of air purification within the country.

Table (I) From Table (1) above, as a measurement result, when the conveyor of this example is installed in a general room containing dust, the diameter is 0.3 μm.
For dust, class loo and class 100,0
When installed in a room with a temperature of 0.00 or less, it was able to guarantee class 1 from class 1o for dust of 0.3 μm.

Although the conveyor unit 1 in the standard configuration is used in the above embodiment, the present invention is not limited to this. Furthermore, although the blower 7 has been described using a blow-out type, it may also be a suction type.Furthermore, although the blowing route for the purified air 5 has been described as a non-circulating type, it goes without saying that it may also be a circulating type. Nor.

Furthermore, the winding method for the drive main shaft 14 and pulley 15 of the toroid heald 16 is not limited to the figure-8 shape, but is arbitrary. Efficient transmission, rotating shaft 10
Any format that rotates is fine.

〔Effect of the invention〕

As described above, in the present invention, a large number of rotating shafts are installed on opposing frames in a detachable and rotatable manner, and a large number of divided rollers are loosely inserted into the rotating shafts, and a connection between a common driving main shaft and the rotating shafts is provided. The conveyor mechanism is formed by winding a wear-resistant toroid belt as a power transmission part,
This conveyor mechanism is installed in a roughly box-shaped cover and can be connected in succession in an appropriate number of conveyor units in an appropriate number of rows, allowing for greater flexibility in line design, while also eliminating humans as a source of high dust generation. It can be shut out from the conveyance passage, and a high degree of purification can be maintained easily and reliably without requiring large-scale equipment in the conveyance passage, and it is suitable for small-scale productivity and is inexpensive.

In addition, even when covered with the cover 3, the conhair mechanism can easily and reliably transport or stop articles in a desired row on the same line, making it suitable for processing articles from outside the cover, inspection 1 assembly, and improving production efficiency. and improve product reliability.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view, Fig. 3 is a slope view of the conveyor mechanism that constitutes this embodiment, and Fig. 4 is a state in which articles are conveyed. It is an explanatory sectional view showing. 1... Conhair unit, 3... Cover, 4...
・Conveyor mechanism section, 5... Conveyance path, 6... Air purification mechanism section, 7... Air blower, 8... Filter 9.
... Frame, 10... Rotating shaft, 11... Roller,
14... Drive main shaft, 16... Toroid belt, 1
7... Drive mechanism section.

Claims (2)

[Claims] (1) A large number of rotating shafts rotatably installed between frames; a part of the inner periphery contacts the outer periphery of the rotating shaft and rotates due to friction, and a stopping force is applied from the outside. A large number of divided rollers that cause the rotary shaft to spin idly and make the article stand still; a motor as a driving source; a common driving main shaft that receives rotation from the motor and rotates; and an axis between the driving main shaft and the rotating shaft. and a drive mechanism having a toroidal belt of wear-resistant material wound between the ends and transmitting power from the motor, forming a conveyor mechanism, and the conveyor mechanism being installed within the cover, the cover is An air purifying conveyance passageway, characterized in that a conveyor unit is continuously connected to form a conveyance passageway within the conveyance passageway, and a conveyor unit that forms an air purification mechanism section with a blower that purifies the air in the conveyance passageway and a filter that captures dust. Conveyor with. (2) A large number of rotating shafts rotatably installed between frames; a part of the inner circumference of the rotating shafts is rotatably inserted into the rotating shafts, and a part of the inner circumference contacts the outer circumference of the rotating shafts and rotates due to friction, and a stopping force is applied from the outside. A large number of divided rollers that cause the rotary shaft to spin idly and make the object stand still when acted on; a motor as a driving source; a shared driving main shaft that receives rotation from the motor and rotates; and an axis between the driving main shaft and the rotating shaft. A conveyor mechanism is constituted by a drive mechanism having a wear-resistant toroid belt wound between the ends and transmitting power from the motor, and the conveyor mechanism is installed inside the cover. A conveyor unit in which an air purification mechanism is formed by a blower that purifies the air in the conveyance path and a filter that captures dust.