JPH07328574A - Dust extractor - Google Patents

Abstract

PURPOSE:To perfectly remove the dust bonded to the surface of a work. CONSTITUTION:The dust bonded to the surface of a work is transferred to dust extracting rolls 4a, 4b by the self-adhesive force of a dust extracting self-adhesive surface 5 to be certainly removed and subsequently transferred to a peeling belt 10 from the dust extracting rolls 4a, 4b by the self-adhesive force of a peeling self-adhesive surface 11 to be removed and further removed from the peeling belt 10 by a washing device 10. By this constitution, the dust extracting capacity of the dust extracting rolls 4a, 4b and the peeling belt 10 is kept and restored. Since a tension roll 30 does not come into contact with the peeling self-adhesive surface 11, the dust transferred to the peeling belt 10 is pressed to the peeling self-adhesive surface 11 by the tension roll 30 to be prevented from being embedded in the belt 10 and the dust on the peeling belt 10 is certainly removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust remover having an improved method for removing dust adhering to the surface of a work such as a printed circuit board.

[0002]

2. Description of the Related Art For example, when removing dust adhering to the surface of a printed circuit board immediately before performing a printing process on the printed circuit board, or when removing dust adhering to the surface of the resin material immediately before performing a polishing process on the resin material. The following is known as a dust remover for removing dust adhering to the surface of the work as in the case of removing.

This dust removing device has a structure in which a rotating brush is provided in a passage area of a work conveyed by a conveyer and a dust suction duct connected to the suction side of a dust collecting fan device is provided. Then, dust is removed from the work by rubbing the surface of the work with a rotating brush, and the dust is removed by sucking the removed dust together with air into the dust suction duct.

[0004]

However, even if an attempt is made to eliminate dust by the above-mentioned conventional means, in reality,
Not only the dust adhering to the surface of the work cannot be removed sufficiently, but some of the dust removed from the work by the rotating brush may not be sucked into the dust suction duct and may adhere to the work again. The reality is that the dust cannot be completely removed from the surface.

An object of the present invention is to provide a dust removing device capable of surely removing dust adhering to the surface of a work and making a post-process efficient.

[0006]

As a means for solving the above-mentioned problems, the invention of claim 1 is a dust removing roll that rotates while contacting the dust-removing adhesive surface on the outer periphery of the work in the region through which the work passes. And a peeling belt that runs by bringing the peeling adhesive surface into contact with the dust removing adhesive surface of the dust removing roll, a cleaning device that cleans the peeling adhesive surface of the peeling belt, and the peeling adhesive surface of the peeling belt. It is characterized in that it is provided with a tension roll that comes into contact with the surface opposite to and that tensions the peeling belt.

According to a second aspect of the invention, in the first aspect of the invention, the tension roll is located at the uppermost part of the roll group around which the peeling belt is stretched above the work passing surface. However, it has a feature.

The invention of claim 3 relates to claim 1 or claim 2.
In the invention described above, the cleaning device is positioned so that the peeling belt is sandwiched between the backup roll and the backup roll which is turned by bringing the surface opposite to the peeling adhesive surface into contact with the peeling belt. It consists of a cleaning brush that comes in contact with the adhesive surface for peeling, and a cleaning tank that stores the cleaning water that rinses foreign substances adhering to the cleaning brush.The backup roll shakes in the direction away from the peeling belt by the swinging member. The feature is that it is supported so that it can be displaced dynamically.

According to a fourth aspect of the invention, in the third aspect of the invention, the backup roll is rotatably supported by a support shaft that is rotatably attached to the swing member about an eccentric shaft. There is a feature in that.

[0010]

According to the first aspect of the invention, the dust-removing adhesive surface of the rotating dust-removing roll comes into contact with the surface of the conveyed workpiece, and the dust adhering to the surface of the workpiece is separated by the dust-removing adhesive surface. It is transferred to the dust removal roll by the adhesive force and removed from the work. The dust transferred from the work surface to the dust removing adhesive surface is transferred to the peeling belt and removed from the dust removing roll by the adhesive force of the peeling adhesive surface that contacts the dust removing adhesive surface. As a result, the adhesive force of the dust removing roll, that is, the dust removing ability is maintained. Further, the peeling adhesive surface of the peeling belt is washed by the washing device, and the dust transferred from the dust removing roll to the peeling adhesive surface of the peeling belt is removed. As a result, the adhesive strength of the peeling belt, that is, the dust removing ability is restored. In addition, the tension roll tensions the peeling belt, which increases the contact force of the dust removing roll to the peeling belt and ensures the transfer of dust from the dust removing roll to the peeling belt. The abutting force of the peeling belt is increased and the cleaning force of the peeling belt by the cleaning device is enhanced. Since the tension roll does not come into contact with the peeling adhesive surface of the peeling belt, the dust transferred to the peeling belt is not pressed against the peeling adhesive surface by the tension roll and embedded therein.

In the second aspect of the invention, the tension roll is located at the uppermost part of the roll group around which the peeling belt is stretched above the work passing surface, and presses the peeling belt upward. This tensions the peeling belt.

According to the third aspect of the present invention, the dust transferred to the peeling adhesive surface is scraped off by the cleaning brush with the backup roll supporting the peeling belt from the side opposite to the peeling adhesive surface. The dust attached to the cleaning brush is washed away by the cleaning water in the cleaning tank.
When the peeling belt is replaced, the backup roll is oscillated and displaced in the direction away from the peeling belt by the operation of the swinging member to loosen the peeling belt, and the loose peeling belt is pulled up from the inside of the cleaning tank to above it. And remove it by pulling it out of the backup roll. The attachment of a new peeling belt is performed by the reverse procedure of the above.

In the invention of claim 4, when the support shaft is rotated with respect to the oscillating member about the eccentric shaft, the axial center of the support shaft, that is, the position of the rotation center of the backup roll is displaced, and the backup is performed. The roll is displaced toward or away from the cleaning brush. Therefore, when the cleaning brush is worn and the contact pressure on the peeling adhesive surface is reduced, the backup belt is eccentrically displaced as described above to bring the peeling belt close to the cleaning brush. The contact pressure on the surface is adjusted to a normal value.

[0014]

According to the first aspect of the present invention, the dust on the surface of the work is not scraped off and sucked together with the air, but is removed by being directly transferred to the dust removing roll by the adhesive force. Therefore, there is an excellent effect that dust on the work surface can be completely removed. In addition, since the dust transferred to the dust removal roll is removed by the peeling belt and the peeling belt is washed to maintain and recover the dust removal performance of the dust removal roll and the peeling belt, the dust removal performance is reduced. The labor and time-consuming work of exchanging the dust-removing roll and the peeling belt are unnecessary, and furthermore, it is not necessary to interrupt the dust-removal for this exchanging work. Therefore, there is an excellent effect that dust removal of the work can be continuously performed for a long period of time. In addition, the tension roll is prevented from contacting the peeling adhesive surface and embedding dust in the peeling adhesive surface. Therefore, the dust transferred to the peeling adhesive surface is cleaned by a cleaning device. Therefore, there is an effect that it can be surely removed, and thus the maintenance / recovery function of the dust removing ability of the peeling belt and the dust removing roll can be further improved.

According to the invention of claim 2, in addition to the above effects, the uppermost roll of the roll group around which the peeling belt is stretched is a tension roll, so that a normal turning roll is located at the uppermost position. Compared with the case where the tension roll is arranged side by side with the dust removal roll and the cleaning device in the horizontal direction, it is possible to prevent the traveling path of the peeling belt from expanding in the horizontal direction, and thus to reduce the size of the entire dust removal device. The effect is that it can be achieved.

According to the third aspect of the present invention, in addition to the above-mentioned effect, when the peeling belt is replaced, the portion which is wound around the backup roll and located in the cleaning tank is pulled out above the cleaning tank. As a means for this, instead of lowering the washing tank, the backup roll is oscillated and slackened to loosen the peeling belt, and the mechanism for oscillating and displacing the backup roll has a large weight. Compared with a large-scale device for driving the tank up and down, the structure is simple and can be downsized, so that the cost can be kept low and the space can be saved.

According to the invention of claim 4, in addition to the effect of the third embodiment, when the cleaning brush is worn and the contact pressure on the peeling adhesive surface is lowered, the contact pressure is adjusted by cleaning. Instead of displacing the brush with the cleaning tank toward the side closer to the backup roll, the backup roll is eccentrically displaced, and the mechanism for eccentrically displacing the backup roll is a cleaning brush and a cleaning tank. Compared with a mechanism for driving the elevator up and down, the structure is simple and can be downsized, so that there is an effect that the cost can be kept low and the space can be saved.

[0018]

【Example】

<Example 1> Hereinafter, Example 1 embodying the present invention will be described with reference to FIG.
It will be described with reference to FIGS. A plurality of feed rolls 2 are arranged in parallel in the housing 1, and the feed rolls 2 are rotatably driven at the same peripheral speed by a feed mechanism (not shown) to move a work (not shown) to the right in FIG. It is designed to be transported to the left from. Further, two receiving rolls 3, 3 are continuously driven to rotate at the same peripheral speed as that of the feed roll 2 by a drive mechanism (not shown) continuously to the end of the two rows of the feed rolls in the transport direction (the left end in FIG. 1). Are arranged side by side and constitute a conveyer conveyor together with the feed roll 2 to convey a work (not shown).

Directly above the both receiving rolls 3 and 3, two dust removing rolls 4a and 4b are provided corresponding to each of them. Each of the dust removing rolls 4a and 4b is formed by winding, for example, a urethane rubber plate (not shown) around the outer peripheral surface of a cylindrical support (not shown). The urethane rubber plate is represented by polyurethane as a chemical structure and has a specific gravity of 1.00 to 1.30. Since the surface of the urethane rubber plate has adhesiveness, the hardness of the urethane rubber plate is preferably 10 to 30 ° from the viewpoint of removing the adhesion of dust, and the hardness of 30 ° is used in this embodiment. is doing. Due to the adhesive performance of this urethane rubber plate, the dust removal rolls 4a, 4
The outer peripheral surface of b is an adhesive surface 5 for dust removal. The dust removing rolls 4a and 4b are freely rotatably fitted to the blocks 7 and 7 at the ends of the upward rods a and 6a of the pair of air cylinders 6 and 6 arranged on both sides of the receiving roll 3 with both ends of the cylindrical support body. Is supported by. The air cylinder 6 is driven by a control mechanism (not shown) equipped with a timer having a preset switching time, and the pair of air cylinders 6 and 6 alternately move forward and backward at every set time of the timer. Due to the alternating operation of the air cylinders 6, the dust removing rolls 4a and 4b sandwich the workpiece with the receiving rolls 3 and 3 at a constant pressure, and a downward position where the dust removing rolls 4a and 4b pinch the work at a constant pressure and peeling described later. Belt 10
It moves up and down alternately with the rising position where it is pressed against. Gears (not shown) are attached to the ends of the dust removing rolls 4a and 4b.
When 4b is displaced to the processing position, its gear meshes with a gear (not shown) attached to the end of the receiving roll 3, whereby the dust removing rolls 4a and 4b are rotationally driven at the same peripheral speed as the receiving rolls 3 and 3. It has become so.

A peeling belt 10 is provided above the feed roll 2, the receiving roll 3 and the dust removing rolls 4a and 4b. The peeling belt 10 has a structure in which a belt-shaped adhesive material made of a special adhesive elastomer is attached to the outer peripheral surface of a belt-shaped base material (not shown) for preventing elongation, and the outer peripheral surface of the peeling belt 10 is for peeling. It has an adhesive surface 11. The adhesive force of the peeling adhesive surface 11 is stronger than that of the dust removing adhesive surface 5 of the dust removing rolls 4a and 4b, and when the dust removing adhesive surface 5 and the peeling adhesive surface 11 adhere to each other, the dust removing adhesive surface 5 The above deposit is transferred onto the peeling adhesive surface 11. Further, the adhered matter on the peeling tacky surface 11 can be easily removed by rubbing, whereby the peeling tacky surface 11 is removed.
The adhesive ability of is restored.

The peeling belt 10 comprises a driving roll 1
2, backup roll 16 and tension roll 3
When it is wound around 0, it runs circularly along a substantially triangular path. Both dust removing rolls 4
A drive roll 12 is located directly above the intermediate position between the a and 4b, and both ends of the drive roll 12 are supported by the housing 1 so as to be rotatably supported. A motor 13 is fixedly installed above the drive roll 12, and a drive belt 13a is provided between a sprocket 14 attached to an output shaft 49d (not shown) of the motor 13 and a sprocket 15 attached to one end of the drive roll 12. Is driven around and the drive roll 12 is driven by the motor 13.
Is rotated counterclockwise in FIG. The peeling belt 10 is wound around the drive roll 12 while the base material thereof is in contact with the driving roll 12, whereby the peeling belt 10 is turned and runs obliquely downward toward a backup roll 16 described later. There is. With respect to the portion of the peeling belt 10 which is wound around the drive roll 12, the first dust removing roll 4a of the dust removing rolls 4a and 4b on the terminal side in the transport direction (the left end in FIG. 2) is displaced to the raised position. Sometimes, it is pressed from below with a constant pressure. In addition, between the drive roll 12 and the backup roll 16, the second dust removing roll 4 on the starting end side in the transport direction is provided.
When the b is displaced to the raised position, the second dust removing roll 4b
A backup plate 17 for enabling the peeling belt 10 to be pressed by is fixed along the traveling path of the peeling belt 10. Further, the pressing force of the dust removing rolls 4a and 4b against the peeling belt 10 is generated when the block 7 of the dust removing rolls 4a and 4b is pushed by the guide member 18 on the surface opposite to the peeling belt 10. ing.

The starting end in the conveying direction relative to the drive roll 12 (see FIG.
A backup roll 16 is provided at the position on the right end side of. The peeling belt 10 is attached to the backup roll 16.
Are wound around with their base materials in contact with each other, whereby the peeling belt 10 is turned from diagonally downward to almost directly above and travels toward a tension roll 30 described later. . The support structure of the backup roll 16 will be described. In the housing 1, a rotary shaft 20 having both ends penetrating through a supporting hole 19 thereof is rotatably supported, and a pair of penetrating ends of the rotary shaft 20 are provided. Parallel arms (swing member which is a constituent of the present invention)
21, 21 are attached to the rotating shaft 20 so as to be rotatable integrally therewith. One arm 21 of both arms 21, 21
Has a lever 22 extending in the direction perpendicular to the arm 21 from the center of rotation so as to be integrally rotatable, and has a lock hole (not shown) at a position slightly eccentric from the center of rotation. Is formed with a projection 23. As shown in FIG. 7, a support shaft 25 formed by projecting eccentric shafts 26, 26 on both end faces is formed in the support holes 24, 24 formed at the tips of both arms 21, 21, respectively. Is mounted so that it can be rotated about the eccentric shaft 26. A holding cylinder portion 21a is formed on the outer surface of the arm 21 on the side where the lever 22 is formed, of both arms 21 and 21, and projects continuously from the support shaft 25 so as to surround the eccentric shaft 26. , This holding cylinder portion 21a
By pressing the outer circumference of the eccentric shaft 26 with the tip of the lock bolt 29 that is screwed through from the outer circumference to the inner circumference, the support shaft 25 is locked so as not to rotate relative to the arm 21. Has become. The support roll 25 is attached to the support shaft 25 by a bearing 27.
Are rotatably supported relative to the support shaft 25. Backup roll 16 supported in this way
Is rotated with the arm 21 by an operator gripping and swinging the lever 22, and as the arm 21 faces downward as shown in FIG. A cleaning position sandwiched between the cleaning brush 45 and the cleaning brush 45 and an evacuation position that is obliquely upwardly separated from the cleaning brush 45 as the arm 21 is horizontally oriented toward the terminal end in the transport direction as shown in FIG. It is designed to be displaced between. When the backup roll 16 is displaced from the cleaning position to the retracted position, the backup roll 16 moves to the inner circumferential side of the peeling belt 10, and accordingly, the peeling belt 1
The tension caused by the backup roll 16 of 0 is released and the peeling belt 10 is loosened. In addition,
When the backup roll 16 is in the cleaning position, the lock bolt 28 is inserted into the lock hole of the protrusion 23 of the arm 21 and screwed into the housing 1, so that the backup roll 16 is locked in the cleaning position so as not to be immovable. It is supposed to be done.

Above the backup roll 16, a tension roll 3 for applying tension to the peeling belt 10 is provided.
0 is provided. The peeling belt 10 is wound around the tension roll 30 while the base material on the opposite side of the peeling adhesive surface 11 is in contact with it.
The peeling belt 10 is turned obliquely downward from above and runs toward the drive roll 12 described above. The support structure of the tension roll 30 will be described. Tension cylinder 31 consisting of an air cylinder fixed to housing 1 Rod 32 protruding upward
A slender movable bracket 33 is supported at the tip of the movable bracket 33 at the center position of its length so as to be incapable of relative movement in the vertical direction and free to rotate relative to the vertical axis. Bearing portions 34, 3 provided upright at both ends of the movable bracket 33
A support shaft 35, which rotatably supports the tension roll 30 via a bearing (not shown), is attached between the four. One end of the support shaft 35 is pivotally supported by the bearing portion 34 by a pin 36, the support shaft 35 can be vertically tilted about the pin 36, and the other end of the support shaft 35 is Has a lock bolt 37 whose lower end is supported by the bearing portion 34 and is screwed in a penetrating state. By changing the screwing amount of the lock bolt 37, the inclination of the posture of the support shaft 35 can be adjusted. There is. A steering arm 38 is attached to one end of the movable bracket 33 so as to rotate integrally with the movable bracket 33. The steering arm 38 has a rod of an oscillation cylinder 39 formed of an air cylinder fixed to the housing 1. The tip of 39a is attached. This oscillation cylinder 3
9 is driven so as to move the rod 39a forward and backward with a constant stroke, for example, one cycle of 30 minutes, whereby the tension roll 30 is rotated around the vertical axis at the intermediate position in the longitudinal direction (the rod 32 is at the center)
The posture is reciprocally changed in a swinging manner within a certain small angle range. The tension roll 30 thus supported maintains the tension state of the peeling belt 10 between the drive roll 12, the backup roll 16 and the tension roll 30 by the ascending force of the rod 32 of the tension cylinder 31. ing. Further, the peeling belt 10 reciprocally slides along the lengthwise direction of the rolls 12, 16 and 30 due to the reciprocating change of the posture of the tension roll 30, whereby, for example, the peeling belt 10 removes dust only at a specific portion thereof. Roll 4a,
It is prevented from being deformed by being pressed by the corner of the edge of 4b.

Below the peeling belt 10, a washing device 40 for washing dust adhering to the peeling belt 10 is provided. The cleaning device 40 includes the backup roll 16, a cleaning tank 41, and a cleaning brush 45. The cleaning tank 41 is a backup roll 16
It has a box-like shape that is elongated along the length direction and has an open top surface.
a is always stored in a fixed amount. The cleaning tank 41 is mounted on a horizontal plate-shaped tank holder 42 provided below the backup roll 16 so as to straddle the work transfer path. The cleaning tank 41 is
Stopper 4 attached to tank holder 42 with bolts 43
By removing 4 and sliding it horizontally, it is possible to pull out to the side of the work transfer path. In the state where the backup roll 16 is displaced to the cleaning position, although the backup roll 16 has its lower part inserted into the cleaning tank 41,
The cleaning water 41a is located above the water surface. Further, when the backup roll 16 is displaced to the retreat position, the backup roll 16 is placed in the cleaning tank 4
It is located above the height of 1 and completely raised. The cleaning brush 45 is, for example, a large number of nylon bristles having appropriate rigidity and elasticity, which are planted radially outward on the outer periphery of the rotary shaft 46, and as shown in FIG. Both ends of the rotary shaft 46 are rotatably supported by penetrating the bearing bodies 47 provided in the cleaning tank 41. Note that the gap between the rotary shaft 46 and the bearing body 47 is not limited to the spring 49a and the ceramic seal 4
Water leakage is prevented by 9b. The lower part of the cleaning brush 45 is always immersed in the cleaning water 41a. One end of the rotating shaft 46 is connected to the output shaft 49d of the motor 49c via a pair of couplings 48, 48 that can be connected and disconnected by relative movement in the axial direction. When the motor 49c is driven in a state where the cleaning brush is displaced to the cleaning position, the cleaning brush 4
5 rotates to rub the peeling adhesive surface 11 of the peeling belt 10 in the direction opposite to the running direction. Further, as the cleaning tank 41 slides in the extraction direction, the couplings 48, 48 are disengaged so that the rotation connection with the motor 49c is released, and the cleaning tank 41 is mounted in the opposite direction to the extraction. As the slider slides in the direction, the couplings 48, 48 are connected and the motor 49c
And the rotary shaft 46 are connected.

A filter is provided in the drainage path of the wash water 41a flowing out from the wash tank 41, and the wash water 41a
It is desirable to filter the foreign matter in the wash water 41a to prevent the foreign matter from flowing off.

A draining device 50 is provided above the cleaning device 40. The drainer 50 includes a receiving roll 51 located on the base material side of the peeling belt 10 and the peeling adhesive surface 1.
This is a configuration in which the pressing roll 52 located on the first side is arranged side by side at the same height. Both rolls 51, 52 have a cylindrical sponge 54 mounted on the outer circumference of a support shaft 53. The sponge 54 is made of polyvinyl alcohol, which is a hydrophilic polymer, as a raw material, and has excellent water absorption and excellent fine pores. It is made of a material that has water retention ability and flexibility and wear resistance.

The receiving roll 51 is rotatably supported by fitting both ends of its support shaft 53 into bearing members 55, 55 fixed to the housing 1. On the other hand, the press roll 52 has one end of a support shaft 53 thereof rotatably supported by a bearing body 56 fixed to the housing 1 via a bearing 57, and the other end of which is a bearing plate 58.
It is fitted to the shaft via a bearing (not shown) so that it can rotate relative to each other. The outer race of the bearing 57 on one end side is formed with spherical protrusions 57a protruding upward and downward from the outer race, and these spherical protrusions 57a are the spherical concave portions 5 of the bearing body 56.
6a, and the spherical projection 57a and the spherical recess 5
The pressing roll 52 is rotatable around an axis line in the vertical direction passing through the spherical center of 6a. Accordingly, as shown in FIG. 8A, the holding roll 52 holds the peeling belt 10 between the holding roll 52 and the holding roll 52, and FIG.
The separation belt 1 is separated from the receiving roll 51 as shown in FIG.
It is adapted to be displaced between an open position where the clamping of 0 is released. Bearing plate 58 of presser roll 52 and housing 1
And the lever 6 of the spring lock 60 shown in FIG. 9, respectively.
1 and the hook 63 are attached. Presser roll 5
When 2 is in the clamping position, the pressing roll 52 is held in the clamping position by locking the spring ring 62 supported by the lever 61 to the hook 63. When the lever 61 is raised from this state and the spring ring 62 is removed from the hook 63, the pressing roll 5
2 can be displaced to the open position.

Next, the operation of this embodiment will be described.
First, the feed roll 2 and the receiving roll 3 are rotated, the driving roll 12 is driven to cause the peeling belt 10 to circulate, and the air cylinders 6 and 6 are actuated to move the first roll as shown by a solid line in FIG. By displacing the dust removing roll 4a to the raised position, the peeling belt 10 is moved between the dust removing roll 4a and the drive roll 12.
The second dust-removing roll 4b is moved to the lowered position and rotated in conjunction with the receiving roll 3 while being closely attached to the peeling adhesive surface 11 by sandwiching. Further, the backup roll 16 is displaced to the cleaning position, and the cleaning brush 45 is rotated to rub the peeling belt 10.

In this state, when the work having dust adhered to the upper surface is conveyed by the feed roll 2 and the receiving roll 3,
While the work passes between the receiving roll 3 and the second dust removing roll 4b, the second dust removing roll 4b rolls on the upper face of the work while keeping the dust removing adhesive surface 5 in close contact with the dust on the work upper face. Is adhered to the dust-removing adhesive surface 5 and transferred to the second dust-removing roll 4b to be removed.

When the switching time set by the timer (not shown) has elapsed, before the adhesive force of the second dust removing roll 4b is significantly reduced, both air cylinders 6 and 6 are actuated, as shown by the chain line in FIG. The second dust removing roll 4b
Is displaced to the raised position and closely adheres to the peeling adhesive surface 11 by sandwiching the peeling belt 10 with the backup plate 17, and the first dust removing roll 4a is displaced to the lowered position to rotate in conjunction with the receiving roll 3. To do.

After that, while the work passes between the receiving roll 3 and the first dust removing roll 4a, the first dust removing roll 4a, like the second dust removing roll 4b, has a dust removing adhesive surface. The upper surface of the work rolls while making the 5 closely contact, and the dust on the upper surface of the work adheres to the adhesive surface 5 for dust removal and is removed by being transferred to the first dust removing roll 4a.

While the dust is being removed by the first dust removing roll 4a in this manner, the second dust removing roll 4 that has risen
b rolls while adhering to the peeling adhesive surface 11 of the peeling belt 10, and the dust removing adhesive surface 5 of the second dust removing roll 4b.
The upper dust is transferred to the peeling belt 10 by the strong adhesive force of the peeling adhesive surface 11 of the peeling belt 10, whereby the dust removing ability of the second dust removing roll 4b is restored.

The peeling belt 10 from which the dust has been transferred from the second dust removing roll 4b first passes through the cleaning device 40.
In the cleaning device 40, the cleaning brush 45 rubs the peeling adhesive surface 11 so that the peeling belt 10 is sandwiched between the cleaning brush 45 and the backup roll 16, and thereby dust on the peeling adhesive surface 11 is removed. The dust attached to the cleaning brush 45 is washed off in the cleaning water 41a.

In this way, the cleaning device 40 while removing the dust
The peeling belt 10 that has passed through passes through while being sandwiched between the receiving roll 51 and the pressing roll 52 of the water draining device 50, and during this time, the water adhered to the peeling adhesive surface 11 in the cleaning device 40 is absorbed by both rolls 51. , 52 are absorbed and removed. As a result, the peeling belt 10 recovers the dust removing ability. After passing through the tension roll 30, the peeling belt 10 again applies the second dust removing roll 4 to the adhesive surface 11 for peeling.
Remove and remove the dust from b.

Then, by the operation of the timer (not shown), the second dust removing roll 4b descends in a state where the dust removing ability is completely restored to remove dust from the work again, and the first dust removing roll 4a removes the dust. Peeling belt 10 removes dust that has been raised and transferred from the work before the ability is greatly reduced.
Will be transferred to.

As described above, by repeating the operation in which the first dust removing roll 4a and the second dust removing roll 4b move up and down alternately at regular intervals, the dust on the work is continuously removed.

As described above, according to this embodiment, the dust on the surface of the work is removed by being directly transferred to the dust removing rolls 4a and 4b by the adhesive force, so that the dust on the work surface is completely eliminated. can do. Also, the dust removal roll 4
The dust transferred to a and 4b is removed by the peeling belt 10 and the peeling belt 10 is washed to maintain and recover the dust removing ability of the dust removing rolls 4a and 4b and the peeling belt 10, and the dust removing roll 4a. , 4b are provided to alternately remove and clean the dust from the work, the dust removing rolls 4a, 4 having reduced dust removing ability.
The labor and time-consuming work of exchanging b and the peeling belt 10 are unnecessary for a long period of time, and the dust removal of the work can be continuously performed for a long period of time.

Further, the peeling belt 10 having a reduced dust removing capability.
5A, the lock bolt 28 is removed from the state shown in FIG. 5A, and the arm 21 is removed as shown in FIG. 5B.
The backup roll 16 is rotationally displaced to the retracted position by swinging. Thereby, the peeling belt 10
Is released from the tensioned state to cause slack, and the backup roll 16 is floated above the cleaning tank 41, so that the peeling belt 10 is slackened and lifted above the cleaning tank 41 to the side. It is possible to remove the cleaning tank 41 without interfering with it by moving the cleaning tank 41 to the cleaning tank 41. When a new peeling belt 10 is installed, the peeling belt 10 is laterally placed in the space between the cleaning tank 41 and the backup roll 16 above the backup roll 16 while the backup roll 16 is displaced to the retracted position. Insert the backup roll 16
Rotate to displace to the cleaning position. As a result, the peeling belt 10 becomes in a tension state and the backup roll 16
It is sandwiched between the cleaning belt 45 and the cleaning brush 45, and the peeling belt 10 can be cleaned. When the peeling belt 10 is replaced, the spring lock 60 of the water draining device 50 is removed, and the pressing roll 52 is separated from the receiving roll 51 as shown in FIG. 8B. Since the pinching of 10 is released, the peeling belt 10
Can be easily removed and attached. As described above, in this embodiment, when the peeling belt 10 is replaced, the portion that is hung around the backup roll 16 and located inside the cleaning tank 41 is pulled out above the cleaning tank 41. As a means, instead of lowering the cleaning tank 41, the backup roll 16 is oscillated and displaced to loosen the peeling belt 10. The mechanism for swinging and displacing the backup roll 16 is to manually rotate the arm 21 that supports the backup roll 16.
Compared with a large-scale device using a hydraulic cylinder or the like required to drive a heavy washing tank 41 up and down, the structure is simple and small, so that the cost is kept low and the saving is achieved. Space is being sought.

When the brush tip of the cleaning brush 45 is worn, the lock bolt 29 of the arm 21 is loosened from the state shown in FIG. 6A so that the support shaft 25 is centered on the axis O of the eccentric shaft 26. 6B, the position of the rotation center P of the backup roll 16 is displaced so as to approach the cleaning brush 45, and when it is displaced to a predetermined position, the lock bolt 29 To fix the support shaft 25 to the arm 21. As a result, the cleaning brush 45 is adjusted to come into contact with the peeling belt 10 at a predetermined contact pressure. As described above, in this embodiment, the cleaning brush 45 is worn and the peeling adhesive surface 1 is removed.
The adjustment of the contact pressure to the backup roll 16 when the contact pressure to the backup roll 16 is reduced is not to raise the cleaning brush 45 together with the cleaning tank 41 supporting the cleaning brush 45 to approach the backup roll 16.
Is performed by eccentric displacement.
The mechanism for eccentrically displacing the backup roll 16 includes a cleaning brush 45 and a heavy cleaning tank 4.
Compared with a large-scale device using a hydraulic cylinder or the like required to drive 1 up and down, the structure is simple and small, so the cost is kept low and
Space saving is achieved.

The tension roll 30 for tensioning the peeling belt 10 is provided so as not to contact the peeling adhesive surface 11 of the peeling belt 10 but to the base material on the opposite side. Therefore, as when the tension roll 30 is in contact with the peeling adhesive surface 11, the dust transferred from the dust removing rolls 4a and 4b to the peeling adhesive surface 11 is pressed by the tension roll 30. It is not embedded inside the peeling adhesive surface 11, and the cleaning brush 45 peels off like when the tension roll 30 comes into contact with the peeling adhesive surface 11 and burys dust therein. Adhesive surface 1
Rubbing 1 does not prevent dust from being removed from the peeling adhesive surface 11, and the dust transferred to the peeling adhesive surface 11 is reliably removed. As described above, in the present embodiment, it can be said that the function of maintaining and recovering the dust removing ability of the peeling belt 10 is extremely high, and thus the function of maintaining and recovering the dust removing ability of the dust removing rolls 4a and 4b is high.

Further, in the present embodiment, the uppermost roll of the roll group around which the peeling belt 10 is stretched is the tension roll 30, so that the normal turning roll 70 as shown in FIG. Compared with the case where the tension roll 71 is located between the drive roll 72 and the backup roll 73 and is arranged in the horizontal direction, the traveling path of the peeling belt 10 in the conveying direction of the work is narrowed. The dimensions are kept short. As described above, the dust remover of this embodiment is downsized as a whole. Moreover, the tension roll 30 is
Since the turning roll for turning the peeling belt 10 from the backup roll 16 toward the drive roll 12 is also used, the number of rolls can be small.

<Other Embodiments> The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention.

(1) The material constituting the dust-removing adhesive surface 5 of the dust-removing rolls 4a, 4b is not limited to urethane rubber, but may be another adhesive material. When urethane rubber is used, it can be appropriately selected according to the material and size of dust adhering to the work.

(2) In the above-mentioned embodiment, the two dust removing rolls 4a and 4b are provided and alternately moved up and down to remove the dust from the work. However, one dust removing roll is used. The configuration may be such that the operation of removing the dust on the workpiece and the operation of removing the dust transferred to the dust removing roll are performed at the same time.

(3) In the above embodiment, the dust removing rolls 4a,
Although an endless belt was used as the peeling belt 10 for removing dust adhering to 4b, the peeling belt 10 was circulated.
For example, one long peeling belt wound between two drums may be made to run one way from one drum side to the other drum side, or may be made to reciprocate between both drums.

[Brief description of drawings]

1] Overall side view

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

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

FIG. 4 is a plan view of a tension roll.

FIG. 5 is a partially cutaway side view of the cleaning device showing a replacement operation of the peeling belt.

FIG. 6 is a partially cutaway side view of a cleaning device showing a backup roll adjustment operation due to wear of a cleaning brush.

FIG. 7 is a partially enlarged front view of a partially enlarged cleaning device.

FIG. 8 is a plan view of the draining device.

FIG. 9 is a perspective view of a spring lock.

FIG. 10 is a side view showing a comparative example of the arrangement of tension rolls with respect to the present embodiment.

[Explanation of symbols]

 4a, 4b ... Dust removal roll 5 ... Dust removal adhesive surface 10 ... Peeling belt 11 ... Peeling adhesive surface 16 ... Backup roll 21 ... Arm (oscillating member) 25 ... Support shaft 26 ... Eccentric shaft 30 ... Tension roll 40 ... Cleaning device 41 ... Cleaning tank 45 ... Cleaning brush

Claims (4)

[Claims] 1. A dust removing roll that rotates while contacting a dust-removing adhesive surface on the outer periphery of the work in a region where the work passes, and a peeling adhesive surface that contacts the dust-removing adhesive surface of the dust removing roll. Peeling belt to run
A cleaning device for cleaning the peeling adhesive surface of the peeling belt, and a tension roll for contacting a surface of the peeling belt opposite to the peeling adhesive surface to tension the peeling belt. A dust removal device. 2. The tension roll is located at the uppermost part of the roll group around which the peeling belt is stretched above the work passing surface.
The dust remover described in. 3. The cleaning device is positioned so that the peeling belt is sandwiched between the backup roll and the backup roll which is turned by bringing the peeling belt into contact with the surface on the side opposite to the peeling adhesive surface. And a cleaning brush that comes into contact with the peeling adhesive surface, and a cleaning tank that stores cleaning water that rinses foreign matter attached to the cleaning brush,
The dust removing device according to claim 1 or 2, wherein the backup roll is supported by a swinging member so as to be swingable in a direction away from the peeling belt. 4. The dust remover according to claim 3, wherein the backup roll is rotatably supported by a support shaft attached to the swing member so as to be rotatable about an eccentric shaft. .