JP3400675B2 - Dust removal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device.

[0002]

In the film and paper industries, film,
Not only dust that is simply placed on the surface of a substrate such as paper, but also sticky dust, dust that has stuck in the substrate, dust with strong adhesion such as fluffy fibers at the edge can be removed A dust remover is required. As a dust removing device for such dust with strong adhesion, conventionally, as shown in FIG. 7, a rotating brush roll a that slidably contacts a traveling work e (base material) and vertical sections on the upstream side and the downstream side. It has been known to have a dust removing head c provided with walls f, f and an air suction chamber b having a brush roll a therein.

[0003]

However, in the conventional dust removing device as described above, the lower part of the partition wall f and the brush roll a are not used.
Since relatively large gaps g, g are formed between the outer peripheral surface and the outer peripheral surface, and turbulent air flow and a decrease in air flow velocity occur in the gaps g, g, the force for sucking the dust d becomes small, and the gap g dust on g
May remain, and the dust d may not be completely sucked and may reattach to the work e and flow to the downstream side.

Therefore, the present invention solves the above-mentioned drawbacks and provides a dust removing device capable of surely removing dust having strong adhesion force from a work and preventing re-adhesion of dust once removed to the work. The purpose is to

[0005]

In order to achieve the above object, a dust removing apparatus according to the present invention has an air suction chamber having an air suction port opening at a position close to a work, and the air suction chamber of the air suction chamber. A rotary dust roll provided inside the rotary brush roll slidably contactable with the workpiece, wherein a gap between an inner surface of a partition wall forming the air suction chamber and an outer peripheral surface of the rotary brush roll is provided. as a minimum at the air inlet near the end of the air inlet side of the partition wall is close to the outer peripheral surface of the rotating brush roller, and an air intake
The partition wall that forms the entrance is located on the outer peripheral surface of the rotating brush roll.
It is bent several times to get closer, and the partition wall is unfolded.
A curved wall portion and a plurality of bent wall portions, and the rotating brush roll
The minimum distance between the outer peripheral surface and the outer peripheral surface is
The second is the decrease .

Further, the opening is made at a position close to the work.
An air suction chamber having an air suction port, and the inside of the air suction chamber
The rotating brush roller is slidably attached to the work.
And a dust removal device including:
Inner surface of partition wall to be formed and outer peripheral surface of the rotating brush roll
So that the gap between the
Attach the end of the partition wall on the side of the air inlet to the rotary brush.
Rotate the partition wall by bringing it close to the outer peripheral surface of the roll.
In the vicinity of the brush roll, the rotating brush roll
The curved wall is formed substantially along the outer peripheral surface of the
Spacing dimension between the outer peripheral surface of the inner surface and the rotating brush roll curved wall portion, and gradually decreases to the air inlet side Monodea
It

Further, the end portion of the air inlet side of the partition wall, in which tapered tapered portion is formed. Further, the spacing dimension between the partition walls of the outer surface and the surface of the workpiece, are gradually increased outwards from the end of the air inlet side of the compartment Ekabe Monodea
It Further, the distance between the air suction port side end of the partition wall and the outer peripheral surface of the rotating brush roll and the distance between the air suction port side end of the partition wall and the workpiece are set to be substantially the same. There is something .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings showing the embodiments.

1 and 4 show an embodiment of a dust removing device according to the present invention, in which the dust removing head 1, a blower unit (not shown) and a work 2 are brought close to the head 1. And a transportation means (not shown) for traveling in the direction of arrow A. Thus, the dust removal head 1 is provided with an air suction chamber 4 having an air suction port 3 opening at a position close to the work 2, and a rotation provided inside the air suction chamber 4 so as to be slidably contactable with the work 2. The brush roll 5 is provided with a nozzle 6 that is close to or in contact with the rotary brush roll 5 and sucks and removes dust R adhering to the rotary brush roll 5.

As shown in FIG. 4, the dust removing head 1 has a casing 7 which is long in the width direction of the work 2, and an air suction chamber 4 is formed inside the casing 7 over substantially the entire length. Then, on the lower surface of the casing 7, a slit-shaped air suction port 3 having a length dimension L set to be larger than a width dimension W of the work 2 is formed.

Further, as shown in FIG. 1, one end of an air suction passage (not shown) is connected to the air suction chamber 4 and is connected, and
A blower unit for sucking air in the air suction chamber 4 is connected to the other end of the suction passage. Then, due to the suction force of the blower unit, the air in the air suction chamber 4 is sucked into the blower unit through the air suction passage, and the outside air is sucked into the air suction chamber 4 from between the air suction port 3 and the work 2. To be done.

The rotating brush roll 5 is rotatably provided in the air suction chamber 4 of the casing 7 about an axis M parallel to the slit-shaped air suction port 3 and is indicated by an arrow F by a rotation driving means (not shown). Is driven to rotate in the direction indicated by. The dust R attached to the surface of the work 2 is swept by the rotating brush roll 5. The nozzle 6 has a slit-shaped hole 10 extending over the entire length in the axial direction of the brush roll 5. The tip of the nozzle 6 is brought close to or in contact with the outer peripheral surface of the brush roll 5 over the entire length in the axial center M direction.

However, as shown in FIGS. 1 and 2, a gap 9 between the inner surfaces of the partition walls 11 forming the air suction chamber 4 and the outer peripheral surface of the rotary brush roll 5 is located near the air suction port 3. The end portion 20 of the partition wall 11 on the side of the air intake port is brought close to the outer peripheral surface of the rotating brush roll 5 so as to be minimized.

Further, the partition wall 11 is covered with the rotating brush roll 5
Bend multiple times to get closer to the outer peripheral surface of the
Bending after diffraction), the non-bending wall portion 23 and the plurality of bending wall portions 24, 24 of the partition wall 11 and the outer peripheral surface of the rotating brush roll 5,
Each minimum interval size T is gradually reduced toward the air intake port 3 side. In addition, the distance J between the outer surface of the partition wall 11 and the surface of the work 2 is gradually increased outward from the end of the partition wall 11 on the side of the air intake port 3. Here, the interval dimension J is taken in a direction substantially orthogonal to the air flow.

The distance B between the end 20 of the partition wall 11 on the side of the air inlet and the outer peripheral surface of the rotating brush roll 5 and the partition wall
Interval C between the end 20 on the air intake side of 11 and the workpiece 2
Are set to be substantially the same. In addition, the interval dimensions B and C are 2 to
It is preferably about 4 mm, and particularly preferably set to 3 mm. Further, at the end 20 on the air intake port side of the partition wall 11,
The tapered portion 26 is formed. Further, as shown in FIG. 3, the outer surface of the tip of the tapered taper portion 26 is a curved surface 27 that is smoothly curved toward the inner surface.

The operation of the dust removing device will be described. As shown in FIGS. 2 and 5, the distance J between the outer surface of the partition wall 11 and the surface of the work 2 is determined by the air intake port 3 of the partition wall 11. Since it gradually increases outward from the end portion on the side, the air flow velocity V ₁ between the bending wall portion 24 and the work 2 shown by a in FIG. 5 and the bending wall portion 24 and the work shown by b. The air flow velocity V ₂ between ₂ and
The relationship of the air flow velocity V ₃ between the tip of the tapered portion 26 and the work 2 is V ₁ <V ₂ <V ₃ , and the flow velocity becomes faster as the air suction port 3 is approached.

The flow velocity V ₄ between the end 20 of the partition wall 11 on the air intake port side and the outer peripheral surface of the rotating brush roll 5 is
The flow velocity V ₃ between the end 20 on the side of the air intake port 11 and the work 2 becomes a slightly smaller value. Further, the tapered taper portion 26
Since the outer surface of the tip end portion is a curved surface 27 that is smoothly curved toward the inner surface side, turbulence in the air flow around the tip end portion of the tapered taper portion 26 and a decrease in the flow velocity hardly occur. Further, the minimum interval dimension T between the non-folded wall portion 23 and the plurality of folded wall portions 24, 24 of the partition wall 11 and the outer peripheral surface of the rotating brush roll 5 is T.
However, since it gradually decreases toward the air intake port 3 side, the relationship between the flow velocities V ₄ , V ₅ , and V ₆ at the minimum interval between the walls is V ₆
<V ₅ <V ₄ is satisfied. That is, the flow velocity becomes faster as it gets closer to the air suction port 3, and becomes slower as it goes deeper in the air suction chamber 4.

As described above, according to this dust removing device, the air flow velocity around the tip of the partition wall 11 becomes the highest, and
Since there is almost no deceleration of the air flow around the tip portion, the dust R does not stagnate, and the dust R can be reliably sucked into the air suction chamber 4. Moreover, even if the dust R once sucked into the air suction chamber 4 approaches the air suction port 3 by adhering to the rotating brush roll 5, the closer the air suction port 3 is, the faster the air flow velocity becomes. The R surely returns to the back of the air suction chamber 4 before reaching the air suction port 3. Therefore, the dust R once removed from the work 2 can be prevented from reattaching to the work 2.

Next, FIG. 6 shows another embodiment, in which the distance dimension S between the inner surface of the partition wall 11 and the outer peripheral surface of the rotary brush roll 5 is gradually reduced toward the air suction port 3 side. Specifically, a portion of the partition wall 11 in the vicinity of the rotating brush roll 5 is curved substantially along the outer peripheral surface of the brush roll 5 so that the space dimension S gradually decreases toward the air suction port 3 side. The part 8 is formed. Other configurations are similar to those described in FIGS. 1 to 5.

With this structure, the flow velocity between the curved wall portion 8 and the workpiece 2 gradually increases from the outside to the air intake port _{3 in} the order of V ₁ , V ₂ and V ₃ . Also, the flow velocity V ₄ between the tip of the curved wall portion 8 and the rotating brush roll 5
Is a little smaller than the flow velocity V ₃ between the tip of the curved wall 8 and the work 2. Further, the flow velocity between the curved wall portion 8 and the brush roll 5 becomes gradually slower in the order of V ₄ , V ₅ , and V ₆ from the air suction port 3 side to the inner side of the air suction chamber.

As described above, the flow velocity of the sucked air gradually increases from the outside of the partition wall 11 toward the air suction port 3, and the suction air is sucked away from the air suction port 3 toward the back of the air suction chamber 4. The flow velocity of air gradually decreases. Then, the change in the flow velocity becomes smooth. As a result, the dust R removed from the work 2 can be more reliably sucked into the interior of the air suction chamber 4, and the dust R once sucked can be more reliably prevented from reattaching to the work 2.

Further, it is possible to prevent the dust removal head 1 from being contaminated, especially around the air intake port 3. That is, the dust R does not remain near the air intake port 3. Therefore, the dust removal head 1 can be effectively used for a long period of time without being washed, and maintenance becomes easy.

The material of the brush bristles of the rotary brush roll 5 may be polyamide resin, acrylic resin, metal, conductive fiber, etc., but other materials may be used. Further, the work 2 to be dust-removed includes, for example, paper and film, but may be other than them.

The dust removing device of the present invention can be modified in design other than the above-described embodiment. For example, although not shown, the dust removing device is provided on the upstream side and the downstream side of the casing 7, respectively.
It is also preferable to provide an air discharge chamber having an ultrasonic nozzle for spraying the work 2 by changing the air to an air knife containing an ultrasonic pressure wave. By doing so, the dust R strongly adhered to the work 2 can be removed more reliably.

[0025]

Since the present invention is configured as described above, it has the following effects.

According to the dust removing device of the first aspect, the dust R adhering to the work 2 does not stay in the vicinity of the air suction port 3 and the dust R can be sucked into the air suction chamber 4 reliably. Moreover, the dust R once sucked can be prevented from reattaching to the work 2. In particular, sticky dust, dust stuck into the work 2, fluff on the edge of the work 2 (in the case of paper), etc. can be reliably removed. Further, the vicinity of the air intake port 3 is less likely to become dirty, the frequency of cleaning and the like can be changed less frequently, and the dust removing head 1 can be effectively used without cleaning for a long period of time, which facilitates maintenance. Also, the compartment
The wall 11 can be easily processed and is easy to manufacture.

According to the dust removing device of the second aspect, the work is
Dust R adhering to 2 may stagnate near the air inlet 3.
Without reliably inhale the dust R to the back side of the air suction chamber 4. Moreover, the dust R once inhaled does not adhere to the work 2 again .
Can be prevented . In particular, sticky dust, turning to the work 2
Check for dust, dust on edges of workpiece 2 (paper), etc.
It can be removed really. Also, near the air intake port 3
It becomes difficult to get dirty, and the frequency of cleaning and cleaning should be changed less frequently.
Without removing the dust removal head 1 for a long period of time
It can be used effectively and maintenance is easy.

According to the dust removing device of the third aspect , the partition wall
The space surrounded by the end 20 of the air suction port 3 on the side of 11, the outer peripheral surface of the rotating brush roll 5 and the work 2 can be made extremely small, and the deceleration of the air flow can be prevented. Therefore, it is possible to more reliably prevent the dust R from stagnating in the vicinity of the air intake port 3. According to the dust remover of claim 4 , the outside air can be quickly sucked into the air suction port 3, the air flow velocity near the air suction port 3 can be further increased, and the dust can strongly adhere to the work 2. The dust R can be removed more reliably. According to the dust removing device of the fifth aspect, it is possible to more reliably prevent the deceleration of the air flow near the air intake port 3.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part.

FIG. 3 is an enlarged sectional view of a main part.

FIG. 4 is a plan view of a main part.

FIG. 5 is an explanatory view of a main part action.

FIG. 6 is a cross-sectional view of a main part of another embodiment.

FIG. 7 is a cross-sectional view of a main part of a conventional example.

[Explanation of symbols]

2 work 3 Air inlet 4 Air suction chamber 5 rotating brush rolls 9 gap 11 compartment wall 20 edges 23 Unfolded wall 24 folding wall 26 Tapered taper B spacing dimension C spacing dimension J interval dimension S space dimension T Minimum distance dimension

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B08B 1/04 B08B 5/04

Claims (5)

(57) [Claims] 1. An air suction chamber 4 having an air suction port 3 opening at a position close to a work 2, and a rotary brush roll disposed inside the air suction chamber 4 so as to be slidably contactable with the work 2. 5, the gap 9 between the inner surface of the partition wall 11 forming the air suction chamber 4 and the outer peripheral surface of the rotary brush roll 5 is minimized in the vicinity of the air suction port 3. As described above, the end portion 20 of the partition wall 11 on the side of the air suction port 3 is brought close to the outer peripheral surface of the rotary brush roll 5.
And the partition wall 11 forming the air suction chamber 4 is a rotating brush.
It is bent several times so that it approaches the outer surface of the roll 5.
The unfolded wall portion 23 and the plurality of folded wall portions 24 of the partition wall 11.
And the outer peripheral surface of the rotating brush roll 5 described above,
A dust remover characterized in that the interval dimension T gradually decreases toward the air intake port 3 side . 2. An opening which opens at a position close to the work 2.
A Air suction chamber 4 having a suction port 3 and the air suction chamber 4
A rotary blade arranged inside so as to be slidably contactable with the work 2.
A dust remover comprising a rashiro roll 5 and the air
The inner surface of the partition wall 11 forming the suction chamber 4 and the rotary brush roller
The gap 9 with the outer peripheral surface of the roll 5 is located near the air intake port 3
The air intake port 3 side of the partition wall 11 should be minimized.
The end 20 of the roller is close to the outer peripheral surface of the rotating brush roll 5.
Allowed, and the partition wall 11, the rotating brush roller 5 near the site of
At approximately the outer peripheral surface of the rotating brush roll 5
The curved wall portion 8 is formed by bending the curved wall portion 8 and the inner surface of the curved wall portion 8.
A dust remover characterized in that a space dimension S from the outer peripheral surface of the rotating brush roll 5 is gradually reduced toward the air intake port 3 side. Wherein the end portion of the air inlet 3 side of the partition wall 11, dust removing system according to claim 1 or 2 wherein tapered tapered portion 26 is formed. 4. The distance J between the outer surface of the partition wall 11 and the surface of the work 2 is gradually increased outward from the end 20 of the partition wall 11 on the side of the air intake port 3. Or the dust remover according to 3 . 5. A space B between the end 20 of the partition wall 11 on the side of the air inlet 3 and the outer peripheral surface of the rotating brush roll 5, and the partition wall.
Interval C between the end 20 on the side of the air intake port 3 of 11 and the workpiece 2
5. The dust remover according to claim 1, 2, 3, or 4, wherein are set to be substantially the same.