JP2015173997A - Dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector capable of surely collecting dust at both end parts in the width direction of a work, without damaging both end surfaces in the width direction of the work.SOLUTION: A dust collector 20 comprises a rotary brush 21 coming into contact with a sheet-like work in carrying and suction means 22 for sucking garbage separated from the work by the rotary brush 21. The rotary bush 21 has a length set in the rotation axis as the lengthwise direction, and the rotation axis of the rotary brush 21 is provided along the carrying direction of the work, and a plurality of rotary brushes 21 in slidable contact from an upper surface 13 and an under surface 14 are arranged at both end parts in the width direction of the work, and the rotary brush 21 is rotated so that a sliding contact part with the work of the rotary brush 21 turns to an end surface 15 side from the central side in the width direction of the work.

Description

  The present invention relates to a dust removing device, and more particularly, to a dust removing device including a rotating brush that separates dust from a workpiece being conveyed.

As a dust removing device that separates dust from a workpiece being conveyed, for example, a dust removing device disclosed in Patent Document 1 is known.
The dust removal device disclosed in Patent Literature 1 includes a dust removal head and a transport unit that causes the workpiece to travel in a state in which the workpiece is brought close to the dust removal head.
The dust removal head includes an air suction chamber having an air suction port that opens at a position close to the workpiece, and a rotating brush roll disposed inside the air suction chamber so as to be slidable with the workpiece.
The dust removal head has a casing that is long in the width direction of the workpiece, and an air suction chamber is formed in the casing over substantially the entire length.
A slit-like air inlet having a length set larger than a width of the workpiece is formed on the lower surface of the casing.
The rotating brush roll is rotatably provided in the air suction chamber of the casing so as to coincide with the width direction of the workpiece and the rotation axis, and is driven to rotate.
Dust adhering to the work surface is swept away by the rotating brush roll.

As another conventional technique, for example, there is a dust removing device described in Patent Document 2.
In Patent Document 2, a photographic film dust removing device is provided in the photographic film transport path, and both front and back surfaces of the photographic film are dust removal target surfaces.
The dust removing device includes an upper brush belt and a lower brush belt as dust removing members and suction means for removing dust adhering to the upper and lower brush belts by suction action on both upper and lower sides across the photographic film transport path. It has been.
The upper and lower brush belts are formed in an endless belt shape, and the outer peripheral surfaces of the upper and lower brush belts are successively moved to a dust removal action position that is a position intersecting the conveyance path of the photographic film by driving the driving means, It contacts the surface of the photographic film where dust is removed and acts to remove dust.

Further, as another related art, a steel strip edge brushing device disclosed in Patent Document 3 can be cited.
The steel strip edge brushing device disclosed in Patent Document 3 includes a pair of brush rolls that are installed on the edge of the steel strip traveling on the steel strip traveling line and driven to rotate, and a dust collection cover that covers the brush rolls. It has been.
By rotating and driving the pair of brush rolls, the foreign matter adhering to both edge surfaces of the steel strip is removed, and the foreign matter is discharged through the dust collecting hood.

JP-A-9-314072 JP-A-8-152690 Japanese Utility Model Publication No. 2-118607

However, in the dust removing device disclosed in Patent Document 1, the sliding contact portion between the work and the rotating brush roll in the traveling direction is close to point contact.
For this reason, the slidable contact time between the workpiece and the rotating brush roll is locally short, and dust on the workpiece surface may not be reliably removed.
In particular, there is a high possibility that the dust having sufficient adhesion to the workpiece cannot be removed sufficiently.

In the dust removing device disclosed in Patent Document 2, since the workpiece contacts within a range corresponding to the width of the upper and lower brush belts, the sliding contact time between the workpiece and the brush belt becomes longer compared to the dust removing device of Patent Document 1. .
However, in the dust removing device disclosed in Patent Document 2, since the brush belt moves in a direction intersecting the conveyance path, the vicinity of one end surface in the width direction of the workpiece is from the one end surface side to the center side in the width direction of the workpiece. The load which goes to is received.
For this reason, there is a possibility that the vicinity of the end face may be damaged due to drowning toward the center in the width direction.
In particular, when the workpiece has a laminated structure, there is a high possibility that peeling occurs from one end face.

In the brushing device disclosed in Patent Document 3, since the rotating brush (brush roll) is in contact with both end surfaces (both edge surfaces) in the width direction of the workpiece (steel strip), the thickness direction of the workpiece is measured at both end surfaces. The load is generated.
When the workpiece is easily damaged, both end surfaces may be damaged. In particular, when the workpiece is a laminate, peeling may occur at both end surfaces.
Incidentally, this type of device is intended to remove dust on the end face of the workpiece, but is not intended to remove dust on the upper and lower surfaces near the end face.

  The present invention has been made in view of the above problems, and an object of the present invention is to reliably perform dust removal at both end portions in the width direction of the workpiece without damaging both end surfaces in the width direction of the workpiece. To provide dust removal equipment.

  In order to solve the above-described problems, the present invention provides a dust removing apparatus including a rotating brush that is in sliding contact with a sheet-like workpiece being conveyed, and a suction unit that sucks dust separated from the workpiece by the rotating brush. The rotating brush has a rotation axis along the conveying direction of the work, and the rotating brushes slidably in contact with the upper surface and the lower surface at both ends in the width direction of the work are disposed, The rotating brush is rotated such that the sliding contact portion is directed from the center side in the width direction of the workpiece toward the end face side.

In the present invention, dust existing on the upper and lower surfaces of both ends in the width direction of the workpiece is removed by the rotating brush.
Since the axis of rotation of the rotating brush is along the workpiece conveyance direction, the range of the sliding contact portion of the rotating brush with the workpiece can be set longer in the conveying direction. Sufficient sliding time with the brush is secured.
Therefore, the dust can be reliably separated from the workpiece by the rotating brush.
Further, the rotating brush is rotated so that the sliding contact portion of the rotating brush with the work is directed from the center side of the work to the end side.
For this reason, the load which goes to the center side of a workpiece | work from the end surface side with respect to the end surface of the width direction of a workpiece | work or the thickness direction in an end surface does not arise, and the damage of the workpiece | work from the end surface vicinity can be prevented. .

Further, in the above dust removing device, the suction means generates a dust flow in the dust removing chamber in the same direction as the dust removing chamber that houses the dust separated from the workpiece and the sliding contact portion of the rotating brush. It is good also as a structure provided with the airflow generator to be made.
In this case, the dust separated from the work is accommodated in the dust removal chamber, but when the air flow in the same direction as the direction in which the sliding contact portion of the rotating brush faces is generated in the dust removal chamber, the dust is separated from both ends of the work. Sucked.
Therefore, it is possible to prevent the separated dust from adhering to the workpiece or accumulating again.

In the dust removing device, the length of the sliding contact portion in the transport direction may be set to be larger than the diameter of the rotating brush.
In this case, the rotating brush has a sliding contact portion that is set larger than the diameter of the rotating brush. Therefore, the range of the sliding contact portion of the rotating brush with the workpiece can be set in the transport direction without increasing the diameter of the rotating brush. Can be set longer.
For this reason, the part of the workpiece that is in sliding contact with the rotating brush has a sufficient sliding contact time with the rotating brush, and the rotating brush can reliably separate the dust from the workpiece.

In the above dust removal apparatus, the workpiece may be an electrode body sheet in which an active material layer is formed on a metal foil.
In this case, the workpiece is an electrode body sheet in which an active material layer is formed on a metal foil. However, when dust is removed by a rotating brush, the active material layer or the metal foil is not peeled off at the end face in the width direction of the electrode body sheet. Absent.

  ADVANTAGE OF THE INVENTION According to this invention, the dust removal apparatus which can perform dust removal reliably in the both ends of the width direction of a workpiece | work can be provided, without damaging the both end surfaces of the width direction of a workpiece | work.

It is a top view which shows the dust removal apparatus which concerns on embodiment of this invention. It is an AA arrow directional view in FIG. It is an enlarged view which expands and shows the principal part of a dust remover. It is a perspective view of the rotating brush which concerns on embodiment. It is a perspective view which shows the modification of a rotating brush.

Hereinafter, a dust remover according to an embodiment of the present invention will be described with reference to the drawings.
A dust removing device 20 of the present embodiment shown in FIGS. 1 and 2 includes a rotating brush 21 that is in sliding contact with a workpiece that is being conveyed along a conveyance path, and a suction unit 22 that sucks dust that has been separated from the workpiece.
As shown in FIG. 3, the workpiece of the present embodiment is an electrode body sheet 10 having a metal foil 11 and an active material layer 12 applied to both surfaces of the metal foil 11, and is a continuous sheet with a predetermined width. This is the work.
Although both surfaces of the electrode body sheet 10 have the same configuration, the upper surface 13 and the lower surface 14 are distinguished from each other in the conveyed electrode body sheet 10 for convenience of explanation.
In the electrode body sheet 10 passing through the dust removing device 20, a portion near the end surface 15 excluding the vicinity of the center in the width direction of the electrode body sheet 10 is an end portion.

The transport path of the electrode body sheet 10 is provided with a guide roll (not shown) as transport means for transporting the electrode body sheet 10.
The electrode body sheet 10 is transported along the transport path along with the rotation of the guide roll.
Further, a cutting device 17 that cuts both ends in the width direction of the electrode body sheet 10 to have a predetermined width is provided in the conveyance path.
The cutting device 17 is provided with a disk-shaped cutting blade (not shown), and the cutting blade is rotated to cut the vicinity of both ends in the width direction of the electrode body sheet 10 being conveyed along the conveying direction.
Therefore, the end face 15 in the width direction of the electrode sheet 10 that has passed through the cutting device 17 is formed by cutting.

As shown in FIG. 3, the rotating brush 21 of the dust removing device 20 includes a rotating shaft 23 and a brush portion 24 formed by a large number of brush bristles 25 that are implanted substantially perpendicular to the rotating shaft 23. .
As shown in FIG. 4, the rotating brush 21 has a cylindrical shape, and the axial length L of the brush portion 24 is set to be larger than the diameter D of the rotating brush 21.
A large number of brush bristles 25 are aligned to a certain length.
The brush bristles 25 are made of, for example, a resin material and have an appropriate elasticity that can be deformed.

A plurality (four) of rotating brushes 21 are disposed in the dust removing device 20 (see FIG. 2).
Both ends of the rotating shaft 23 of the rotating brush 21 are rotatably supported by the suction means 22.
On one end side in the width direction of the electrode body sheet 10, two rotating brushes 21 are arranged so as to sandwich one end portion 16 from above and below.
Similarly, on the other end side in the width direction of the electrode body sheet 10, the two rotating brushes 21 are arranged so as to sandwich the other end from above and below.
Each of the rotating brushes 21 is arranged with the rotation axis P along the conveying direction of the electrode body sheet 10.

The position of the rotary brush 21 in the vertical direction with respect to the electrode body sheet 10 is a position where a sliding contact portion S that is in sliding contact with the electrode body sheet 10 in the width direction of the electrode body sheet 10 is formed in the brush portion 24.
The distance from the rotation axis P to the upper surface 13 (or the lower surface 14) of the electrode sheet 10 is set to be smaller than the distance from the rotation axis P to the tip of the brush bristles 25.
The position of the rotating brush 21 in the width direction with respect to the electrode body sheet 10 is rotated so that the sliding contact portion S of the brush portion 24 is formed in a certain range from the end surface 15 in the width direction of the electrode body sheet 10 to the center side. The axis P is located on the center side of the end surface 15 in the width direction of the electrode body sheet 10.
In the present embodiment, the range of the slidable contact portion S of the brush portion 24 adheres or accumulates dust (mainly the metal foil 11 and the active material layer 12 chips) generated when the electrode body sheet 10 is cut. Corresponds to the range to be.
The sliding contact portion S of the brush portion 24 is formed by bending due to elastic deformation of the brush bristles 25 that come into contact with the electrode body sheet 10.
Further, the sliding contact portion S of the brush portion 24 is formed over the axial length L of the rotating brush 21.

A rotary drive mechanism 26 is connected to one end side (upstream side in the transport direction) of the rotary shaft 23 of each rotary brush 21.
The rotation drive mechanism 26 includes an electric motor 27 as a drive source and a drive force transmission unit 28 for transmitting a rotation drive force to the rotary brush 21.
In the present embodiment, the rotational drive mechanism 26 transmits the rotational driving force of the electric motor 27 to the rotary brushes 21, and the rotary brushes 21 are rotated in synchronization with each other.
Each of the rotating brushes 21 is rotated around the rotation axis P of the rotation shaft 23.
The rotating brush 21 is rotated such that the sliding contact portion S formed on the brush portion 24 is directed from the center side in the width direction of the electrode body sheet 10 toward the end face 15.

The dust removing device 20 of the present embodiment is provided with suction means 22 for sucking dust separated from the electrode body sheet 10 by the rotating brush 21.
The suction means 22 is provided so as to surround the rotating brush 21, and includes a casing 30 that forms a dust removal chamber 31 and an exhaust duct 32 that communicates with the dust removal chamber 31.
The casing 30 is formed so that the dust contained in the dust removal chamber 31 is not discharged from the dust removal chamber 31 to the electrode body sheet 10 side.
The exhaust duct 32 is a duct for discharging dust collected in the dust removal chamber 31 from the dust removal chamber 31 together with air.
The exhaust duct 32 is provided with a blower 33 as an air flow generator, and the blower 33 is a suction source for sucking air in the dust removal chamber 31 (see FIG. 1).
The blower 33 generates an air flow in the dust removing chamber 31 so as to coincide with the direction from the center side of the electrode body sheet 10 of the sliding contact portion S toward the end face 15.

Next, the operation of the dust removing device 20 of this embodiment will be described.
The electrode body sheet 10 is transported along the transport path along with the rotation of the guide roll.
When the electrode body sheet 10 passes through the cutting device 17, both ends in the width direction of the electrode body sheet 10 are cut by the cutting device 17 along the conveying direction.
In the vicinity of the end surface 15 of the upper surface 13 and the lower surface 14 of the electrode body sheet 10 cut to a predetermined width, chips of the metal foil 11 and the active material layer 12 generated during cutting adhere or accumulate as dust. To do.
In addition, since the vicinity of the center of the electrode body sheet 10 in the width direction is away from the end face 15, dust generated during cutting adheres to or accumulates in the vicinity of the center of the electrode body sheet 10 except for the end portion in the width direction. There is no.

The electrode sheet 10 on which the end face 15 is formed by cutting passes through the dust removing device 20.
A rotating brush 21 that rotates at high speed makes sliding contact with the electrode body sheet 10 that passes through the dust removing device 20 so as to sandwich the end portion in the width direction of the electrode body sheet 10 from above and below.
The rotating brush 21 is rotated via the driving force transmission unit 28 by driving of the electric motor 27.
The rotary brush 21 is rotated such that the sliding contact portion S formed on the brush portion 24 is directed from the center side in the width direction of the electrode body sheet 10 toward the end face 15 side.
Therefore, the slidable contact portion S of the brush portion 24 scrapes off dust adhering or accumulating at the end of the upper surface 13 (or the lower surface 14) and sweeps it out to the dust removing chamber 31.
The end in the width direction of the electrode body sheet 10 is in sliding contact with the rotating brush 21 over the longitudinal direction of the brush portion 24 along the conveying direction, and dust is sufficiently removed by the sliding contact portion S until it passes through the rotating brush 21.

Since the sliding contact portion S is directed from the center side in the width direction of the electrode body sheet 10 toward the end surface 15, the end surface 15 does not interfere with the brush portion 24.
Further, no load in the width direction of the electrode body sheet 10 from the end surface 15 side toward the center side of the electrode body sheet 10 or a load in the thickness direction of the end surface 15 occurs.
For this reason, the end face 15 of the electrode body sheet 10 does not have a load that causes separation of the metal foil 11 and the active material layer 12 from the end face 15 side, and the end face 15 is damaged by the rotating brush 21. There is no.
Incidentally, the sliding contact part S of the brush part 24 makes a load act on the electrode body sheet 10 by the restoring force with respect to the elastic deformation of the brush bristles 25.
However, the load from the sliding contact portion S does not cause damage to the end face 15 of the electrode body sheet 10.

As shown in FIG. 3, the dust G scraped off by the rotating brush 21 is separated from the brush portion 24 and is swept out into the dust removing chamber 31.
In the dust removal chamber 31, the air flow is formed in the same direction as the movement direction of the sliding contact portion S by the operation of the blower 33, and the dust G in the dust removal chamber 31 moves away from the electrode body sheet 10 according to the air flow. And is discharged through the exhaust duct 32.
In addition, the white arrow shown in FIG. 2, FIG. 3 shows the flow of air.

According to the dust removing device 20 of the present embodiment, the following operational effects can be obtained.
(1) The dust present on the upper surface 13 and the lower surface 14 at both ends in the width direction of the electrode body sheet 10 is removed by the rotating brush 21. Since the rotation axis P of the rotating brush 21 is along the conveying direction of the electrode body sheet 10, the range of the sliding contact portion S between the rotating brush 21 and the electrode body sheet 10 is set to be long in the conveying direction, and the electrode body sheet 10 rotates. Sufficient sliding time with the rotating brush 21 is ensured at both ends in sliding contact with the brush 21. Accordingly, dust can be reliably separated from the electrode body sheet 10 by the rotating brush 21 that is rotated.

(2) The rotary brush 21 is rotated so that the sliding contact portion S of the brush portion 24 with the electrode body sheet 10 is directed from the center side of the electrode body sheet 10 to the end face 15 side. For this reason, the load which goes to the center side of the electrode body sheet 10 from the end surface 15 side with respect to the end surface 15 of the width direction of the electrode body sheet 10 or the load to the thickness direction in the end surface 15 does not arise. As a result, peeling of the metal foil 11 and the active material layer 12 on the end face 15 is prevented, and the end face 15 is not damaged by the sliding contact of the rotating brush 21.

(3) The dust separated from the electrode body sheet 10 is sucked away from the both end portions of the electrode body sheet 10 in the dust removal chamber 31 and discharged through the exhaust duct 32. Therefore, it is possible to prevent the separated dust from adhering to the electrode body sheet 10 or accumulating again.

(4) Since the rotary brush 21 is formed with the sliding contact portion S that is set to be larger than the diameter of the rotary brush 21, the rotary brush 21 can be connected to the electrode body sheet 10 without increasing the diameter of the rotary brush 21. The range of the sliding contact portion S can be set longer in the transport direction. Thereby, the height of the dust remover 20 can be suppressed, and the dust remover 20 can be downsized.

(5) The bristles 25 that form the brush portion 24 of the rotating brush 21 are formed of a resin material that is softer than the active material layer 12. For this reason, even if the rotating brush 21 is in sliding contact with the electrode body sheet 10, the brush hairs 25 are not scratched on the upper surface 13 and the lower surface 14 of the electrode body sheet 10.

(6) Since the sliding contact portion S of the brush portion 24 with the electrode body sheet 10 is directed from the center side of the electrode body sheet 10 toward the end face 15 due to the rotation of the rotating brush 21, both ends of the electrode body sheet 10 in the width direction A pulling force acts on the surface 15 side. For this reason, the curve and wrinkle in the width direction of the electrode body sheet | seat 10 can be prevented.

  The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist of the invention. For example, the following modifications may be made.

In the above embodiment, the columnar rotating brush is used. However, the rotating brush may have a configuration other than the columnar rotating brush. For example, like the rotating brush 41 shown in FIG. 5, the brush bundle 42 in which the bristles 25 are bundled may be continuously planted spirally with respect to the rotating shaft 23 to form the brush portion 43. In this case, the rotating brush 41 is prevented from applying an excessive load to the workpiece by the brush portion 43, the load on the workpiece can be reduced, and the workpiece can be more reliably prevented from being damaged.
The diameter of the rotating brush and the axial length of the brush portion are not limited to the above-described embodiment, and can be appropriately set according to various conditions such as the type of workpiece. The length of the brush portion in the axial direction is preferably at least the diameter of the rotating brush.
In the above embodiment, the dust removing device removes dust generated when the workpiece is cut. However, the rotating brush can also remove dust other than dust generated when cutting.
In the above embodiment, a blower is used as the airflow generator, but a vacuum pump may be used as the airflow generator.
In the above embodiment, the electrode body sheet as the work to be dust-removed has been described, but the work is not limited to the electrode body sheet. The dust removal target workpiece may be, for example, a metal foil or a resin film.

10 Electrode body sheet (work)
DESCRIPTION OF SYMBOLS 11 Metal foil 12 Active material layer 13 Upper surface 14 Lower surface 15 End surface 17 Cutting device 20 Dust removal device 21 and 41 Rotary brush 22 Suction means 23 Rotating shaft 24 and 43 Brush part 25 Brush hair 30 Casing 31 Dust removal chamber 32 Exhaust duct 33 Blower 42 Brush Bundle G Dust P Rotation axis S Sliding part

Claims (4)

In a dust removing apparatus comprising a rotating brush that is in sliding contact with a sheet-like workpiece being conveyed, and a suction unit that sucks dust separated from the workpiece by the rotating brush,
The rotating brush has a rotation axis along the conveying direction of the workpiece, and the rotating brush that is in sliding contact with the upper surface and the lower surface at both ends in the width direction of the workpiece are disposed,
The dust removing device, wherein the rotating brush is rotated so that a sliding contact portion of the rotating brush with the work is directed from a center side in a width direction of the work toward an end face side. The suction means is
A dust removal chamber for storing the dust separated from the workpiece;
The dust removing apparatus according to claim 1, further comprising: an airflow generator that generates an air flow in the same direction as a direction in which the sliding contact portion of the rotating brush is directed.   The dust removing device according to claim 1 or 2, wherein a length of the sliding contact portion in a conveying direction is set larger than a diameter of the rotating brush.   The dust removing apparatus according to any one of claims 1 to 3, wherein the workpiece is an electrode body sheet in which an active material layer is formed on a metal foil.

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