JP6473928B2 - Powder spraying device - Google Patents

Description

  The present invention relates to a granular material spraying device for spraying granular material on a surface in order to improve the physical functionality of a material to be sprayed such as a sheet.

  For example, thin-layer organic material sheets such as a roll-shaped laminate film, plastic film, and rubber sheet may adhere to each other and cause inconvenience in subsequent processes. For this reason, when winding the manufactured sheet | seat, the fine granular material which uses the starch as a raw material is sprayed on the surface of the sheet | seat, and adhesion is prevented.

  The conventional granular material spreading | diffusion apparatus is a structure which has arrange | positioned a spreading roller to the lower part of a granular material storage tank, and made a pair of doctor contact the roller surface of a spreading roller.

  FIG. 6 is an explanatory diagram when a granular material having a large particle diameter passes through a doctor. When spraying particles containing various sizes of large and small particles that have not been adjusted in particle size, as shown in the figure, the large particles 2 adhered to the surface of the spray roller 1 pass through the metallic doctor 3. When the thin doctor 3 is deformed and gets over the powder 2 having a large particle diameter, a gap 4 is generated around the powder 2. A large number of small granular materials 5 pass through the gap 4 at a time. As a result, a large amount of powder particles 5 having a small particle diameter are spread in the width direction on the surface of the spread object, resulting in a non-uniform spread as a whole. In particular, when a very small amount of dispersion is performed using a granular material having a non-uniform particle size, the variation in the width direction appears remarkably.

The conventional doctor is a metal member, and the brush is applied to a use of scraping off a granular material or blocking it with unevenness.
For example, the powder spraying device disclosed in Patent Document 1 is provided with a rotating brush roll in contact with the rotating roll in order to wipe off the wood flour attached to the surface of the rotating roll.

  The medicine spraying device disclosed in Patent Document 2 is provided with alternately a plurality of brush members and elastic members in contact with the advancing side and the back side of the roller surface of the spraying roller, and closes the powder particles in the medicine insertion hole of the feeding roller. It is.

Japanese Utility Model Publication No. 46-23332 JP 2006-217827 A

  However, the apparatus disclosed in Patent Document 1 is provided with a pair of doctors on a rotating roller and is not configured to use a rotating brush roller as a doctor. The rotating brush roller is arranged so that the tip of the brush is brought into contact with the roller surface from the vertical direction, and scrapes off the powder particles with the tip of the hair entering the irregularities formed on the roller surface. is there.

  Further, the brush member and the elastic member disclosed in Patent Document 2 are configured such that the tip is always in contact with the outer periphery of the spreading roller (paragraph 0036). With such a configuration, the powder particles are blocked in the medicine insertion hole of the feeding roller without the hair tip entering the inside of the medicine insertion hole of the feeding roller.

  In view of the above-mentioned problems of the prior art, the present invention provides a granular material spraying device that can evenly disperse a non-uniform granular material that has not been adjusted in particle size with respect to the material to be sprayed. The purpose is that.

As a first means for solving the above-mentioned problem, a granular material spraying apparatus that rotates a spraying roller disposed in a lower part of a granular material storage tank and sprays the granular material adhering to the roller surface to a sprayed body. A linear brush doctor in contact with the peripheral surface of the spraying roller along the axial direction, the brush doctor directing the brush tip toward the rotation direction of the spraying roller. An object of the present invention is to provide a granular material spraying device characterized in that the tip side surface of the brush is inclined and brought into contact with the peripheral surface of the spraying roller without contacting the peripheral surface of the roller.

  As a second means for solving the above-mentioned problem, in the first means, there is provided a brush presser plate that is supported along the side surface of the brush doctor from the outside of the granular material storage tank. It is in providing a granular material spraying apparatus.

  As a third means for solving the above problem, in the first or second means, a shaft disposed along the axial direction of the spraying roller, and a brush support for supporting the brush doctor and the brush pressing plate Angle adjusting means comprising a member, wherein the angle adjusting means is configured to be able to swing the brush support member in a direction of approaching or separating from the spraying roller around the shaft axis, and the brush doctor is configured to rotate around the spraying roller. An object of the present invention is to provide a granular material spraying device which bends the hair tip side of a brush when contacting a surface.

  As a fourth means for solving the above-mentioned problems, in the third means, the angle adjusting means is provided with a spacer for fixing the brush doctor arranged at a predetermined angle. To provide an apparatus.

  As a fifth means for solving the above-mentioned problem, in any one of the first to fourth means, a doctor is provided that contacts along the axial direction on the peripheral surface of the spreading roller, and the doctor has a cutting edge. An object of the present invention is to provide a granular material spraying device characterized in that the powder is brought into contact along the axial direction above the peripheral surface of the spraying roller.

  According to the present invention with the above configuration, when a granular material having a large particle size attached to the spray roller passes through the brush doctor, a flexible brush spreads while contacting the surface of the granular material, It is possible to pass the powder particles while adhering to the surface along the rotation of the spreading roller. At this time, there is no gap around the granular material unlike conventional metal doctors. For this reason, a granular material with a small particle diameter is not sprayed in large quantities in the width direction of a to-be-dispersed body with a granular material with a large particle diameter, and can be uniformly distributed. In particular, when the amount of powdered particles is very small, more uniform spraying can be performed.

  According to the present invention configured as described above, by supporting the brush doctor from below the brush side surface, the side surface of the tip of the brush can be brought into uniform contact with the peripheral surface of the spreading roller.

  According to the present invention having the above-described configuration, the powder granule is uniformly dispersed by adjusting the contact of the side surface of the tip of the brush that bends the hair tip side by bringing the brush side of the brush doctor into contact with the spray roller. be able to. Further, even if the brush of the brush doctor is worn by the rotation of the spray roller, the contact amount of the side surface of the tip of the brush can be easily adjusted. In addition, although uniform spraying can be performed by applying the side surface of the brush, in this case, when the brush is worn, there is a possibility that the tip end side of the brush is cut and falls onto the sprayed body. For this reason, it is ideal to apply the side surface of the tip of the brush.

  According to the present invention configured as described above, the brush doctor whose amount of contact with the side surface of the tip of the brush is adjusted by the angle adjusting means can be fixed at an arbitrary place.

  According to this invention by the said structure, the volume of a granular material storage tank can be made small and the granular material which remains in a tank can be decreased. Moreover, the area of the spraying roller which contacts a granular material inside a granular material storage tank can be made small, and the granular material which remains in a tank can be decreased.

It is a figure which shows the structure outline of the granular material dispersion | spreading apparatus of this invention. It is sectional drawing of the granular material spraying apparatus of this invention. It is explanatory drawing of the modification of a brush pressing board. It is the perspective view which looked at the granular material storage tank of the granular material distribution apparatus of this invention from diagonally upward. It is explanatory drawing when a granular material with a large particle size passes a brush doctor. It is explanatory drawing when a granular material with a big particle size passes a doctor.

  DESCRIPTION OF EMBODIMENTS Embodiments of a granular material spraying apparatus of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a schematic configuration of a granular material spraying apparatus of the present invention. In FIG. 1, the detailed structure inside the apparatus is omitted. FIG. 2 is a cross-sectional view of the granular material spraying apparatus of the present invention. As shown in the figure, the granular material spraying device 10 of the present invention is attached on the transport path 14 of the sprayed body 12 such as a nonwoven fabric or an adhesive sheet in the direction crossing the transport path 14, and the sprayed body below. 12 is a device that uniformly disperses the powder particles 16 on the surface of 12. In addition, in FIG. 1, the conveyance direction of the to-be-spread body 12 is shown by the arrow A for convenience, However The conveyance direction is not restricted to this, A direction opposite to the arrow A may be sufficient.

[Powder and Particle Dispersing Device 10]
The granular material spreading | diffusion apparatus 10 has as a main basic structure the granular material storage tank 18, the spreading | diffusion roller 20, the doctor 30, the brush doctor 40, the brush pressing board 50, the angle adjustment means 60, and the felt 90. Yes.

[Powder storage tank 18]
The granular material storage tank 18 is provided in the internal space of the casing 11 and is configured to receive the granular material 16 from the upper opening and to discharge the accommodated granular material 16 from the lower opening. In addition, the casing 11 of this embodiment consists of the top plate 11a and the side wall 11b.

[Spreading roller 20]
The spreading roller 20 is attached to the opening in the lower part of the granular material storage tank 18. The spreading roller 20 is attached so that the lower part is exposed to the outside from the lower opening of the granular material storage tank 18 and the axis is horizontal. A plurality of recesses (not shown) for accommodating the powder particles 16 are formed on the peripheral surface (outer surface) of the spreading roller 20. Such a recess can be formed by knurling or sandblasting. The size of the recess can be arbitrarily changed in consideration of the particle size of the granular material 16, the amount of application, and the like. The spreading roller 20 is configured to be rotatable by driving means (not shown).

[Doctor 30]
The doctor 30 is a metal member that fills one gap between the granular material storage tank 18 and the spray roller 20. The doctor 30 is a flat plate having a substantially rectangular shape and a thin plate thickness that is in contact with the spreading roller 20 in the axial direction, and is arranged so that the blade edge is in contact with the rotation direction of the spreading roller 20 and the upper peripheral surface. Yes. The doctor 30 is attached to one side surface (side surface along the axial direction of the spraying roller 20, side wall 11 b in this embodiment) of the granular material storage tank 18 by using a doctor holding plate 32 and a detachable fastening means 34. ing.

  With such a configuration of the doctor 30, the volume of the powder storage tank 18 can be reduced, and the powder 16 remaining in the tank can be reduced. Moreover, the area of the spraying roller 20 which contacts the granular material 16 inside the granular material storage tank 18 can be made small, and the granular material 16 which remains in a tank can be decreased.

[Brush doctor 40]
The brush doctor 40 is a member that fills the other gap between the powder storage tank 18 and the spray roller 20. The attachment position of the brush doctor 40 is on the traveling direction side of the spray roller 20 relative to the doctor 30, and the other side surface of the granular material storage tank 18 (the side surface along the axial direction of the spray roller 20; It is attached to the lower side of the plate 11a. The brush doctor 40 according to the present embodiment is a brush that is in linear contact with the spreading roller 20 in the axial direction. The brush doctor 40 can be made of a material such as nylon resin having flexibility. The diameter of the hair can be arbitrarily changed according to the degree of wear due to contact with the spraying roller 20, the particle size of the granular material 16, and the spraying amount.

  The brush doctor 40 according to the present embodiment is in contact with the peripheral surface of the spraying roller 20 by tilting the side surface of the brush with the brush tip facing the rotation direction of the spraying roller 20 as illustrated. Then, the contact amount of the side surface of the tip of the brush is adjusted by an angle adjusting means 60 described later, and the side surface of the tip (hair tip) of the brush is bent so as to contact the peripheral surface of the spreading roller 20. The brush doctor 40 having such a configuration can provide the passage of the powder particles 16 attached to the peripheral surface of the spray roller 20 between the brush hairs.

  In addition, the brush doctor 40 of this embodiment is not the structure which makes the hair | bristle tip of a brush contact the surrounding surface of the spreading roller 20. FIG. Since the point of contact with the spraying roller 20 is pointed, the progress of wear is accelerated and a gap is formed between the spraying roller 20 and a large amount of the granular material 16 cannot pass and spray uniformly. It is. Moreover, it is because the path | route of the granular material 16 cannot be provided between the bristles of a brush.

[Brush holding plate 50]
The brush holding plate 50 is a member that supports the brush doctor 40 along the side surface of the brush from the outside of the granular material storage tank 18. The brush retainer plate 50 is a metal flat plate that contacts along the width direction of the brush doctor 40, and has a tapered portion that contacts the brush.
By supporting the brush doctor 40 from below the brush side surface with the brush pressing plate 50 having such a configuration, the side surface at the tip of the brush can be brought into uniform contact with the peripheral surface of the spraying roller 20.
FIG. 3 is an explanatory view of a modified example of the brush pressing plate 50. A brush pressing plate 50A shown in FIG. 5A includes a brush doctor 40 at the tip. In such a brush doctor 40, the longitudinal direction of the brush is arranged along the longitudinal direction of the brush pressing plate 50A. Also with the brush pressing plate 50A having such a configuration, the side surface at the tip of the brush can be brought into uniform contact with the peripheral surface of the spraying roller 20.
Further, the brush pressing plate 50B shown in FIG. 5B is a brush using thicker hair than the brush doctor 40. Also with the brush holding plate 50B having such a configuration, the brush doctor 40 is supported from below the brush side surface, whereby the side surface at the tip of the brush can be uniformly brought into contact with the peripheral surface of the spraying roller 20.

[Angle adjustment means 60]
The angle adjusting means 60 includes a brush support member 62, a shaft 68, a bearing 70, and a spacer 80.
The brush support member 62 includes a first support part 64 and a second support part 66.

  The first support portion 64 is tapered at one end, in other words, wedge-shaped in a cross-sectional view, the brush doctor 40 is attached to the upper surface (front surface), and the brush holding plate 50 is attached to the lower surface (back surface). . The first support portion 64 has a hole 64a through which a shaft 68 (described later) passes on the other end side. Such a first support portion 64 is a member formed along the width direction of the brush doctor 40.

The second support portion 66 is a member connected to the other end side of the first support portion 64 and extending from the other end side to the outside of the granular material storage tank 18. A gap is provided between the end protruding outside the second support portion 66 and the top plate 11 a of the casing 11.
The shaft 68 has an axial center disposed along the axial direction of the spreading roller 20. The shaft 68 is pivotally supported by a bearing 70 provided on the lower surface of the top plate 11 a of the casing 11.
The spacer 80 fixes the brush doctor 40 disposed at a predetermined angle by the brush support member 62. The spacer 80 is a flat plate set to have a predetermined thickness that can be inserted into a gap between the end protruding outside the second support portion 66 and the top plate 11 a of the casing 11. In addition to the spacer 80, a hole penetrating the top plate 11a is formed, a push screw is inserted from the upper surface, and the tip is applied to the upper surface of the second support portion, so that the brush support member 62 disposes at a predetermined angle. A configuration in which the brush doctor 40 is fixed can also be employed.

The angle adjusting means 60 having such a configuration swings in a direction in which the brush doctor 40 and the brush pressing plate 50 attached to one end side of the first member 64 are approaching or separating from the spraying roller 20 around the axis of the shaft 68. To do. The amount of contact of the side surface of the brush tip of the brush doctor 40 can be adjusted by this swinging. For example, in the initial stage of installation of the brush doctor 40, the side surface of the tip (hair tip) of the brush is bent (curved) so as to be in contact with the peripheral surface of the spreading roller 20. Thereby, uniform spraying can be performed. And if a brush wears out by contact with a spreading roller, it will become uneven distribution. In this case, the side surface of the tip of the new brush can be brought into contact with the peripheral surface by pushing the brush doctor 40 toward the spreading roller 20 by the angle adjusting means 60.
The brush doctor whose amount of contact of the side surface at the tip of the brush is adjusted by the brush support member 62 can be easily fixed at an arbitrary position using the spacer 80. Further, by using a thin plate together with the spacer 80, it is possible to finely adjust the contact amount of the side surface of the tip of the brush.

[Felt 90]
FIG. 4 is a perspective view of the granular material storage tank of the granular material spraying apparatus of the present invention as viewed obliquely from above. In FIG. 4, the detailed structure inside the apparatus is omitted. As shown in the figure, the powder storage tank 18 is provided with a pair of felts 90a and 90b. The felt 90 is a member formed in substantially the same shape as the cross-sectional shape of the granular material storage tank 18 (direction orthogonal to the axis of the spray roller 20). The felt 90 is attached to the granular material storage tank 18 according to the width of the object 12 to be spread. In addition, the felt 90 of this embodiment uses the nonwoven fabric provided with predetermined rigidity. For this reason, even if it is in the state made to contact with the peripheral surface of a roller, it is hard to wear and can reduce the outflow of the granular material from the contact point with a roller. Moreover, it is easy to process according to the cross-sectional shape of the powder storage tank 18 with good workability.
With the felt 90 having such a configuration, the spreading width of the powder particles 16 can be matched with the width of the spread object 12. Accordingly, it is possible to effectively use the granular material without waste by reducing the amount of the granular material that is dispersed on the conveyance path other than the surface of the object 12 to be dispersed.

[Action]
The operation of the granular material spraying device of the present invention having the above configuration will be described below.
FIG. 5 is an explanatory diagram when a granular material having a large particle diameter passes through a brush doctor. When spraying powder particles that have not been adjusted in particle size, rotation of the spray roller 20 causes the powder particles having a large particle size and the powder particles having a small particle size to adhere to the peripheral surface of the roller. And when the granular material adhering to the spreading roller 20 passes through the brush doctor 40, the small granular material passes through the passage along the passage (gap) formed between the brushes according to the rotation of the roller. To do.

  On the other hand, when the particle size is larger than the passage (gap) formed between the brushes, the flexible brush spreads along the surface of the particle, Passing the brush according to the rotation of the roller without generating a gap around Thereby, a granular material can be uniformly disperse | distributed on the surface of a to-be-spread body.

  When the spraying of the powder particles 16 is not uniform due to the wear of the brush doctor 40, the angle adjusting means 60 adjusts the amount of contact between the side surface of the tip of the brush and the spraying roller 20 to thereby adjust the powder particles 16. A uniform passage can be realized by newly forming a passage (gap) between the brushes through which the water passes.

  According to such a granular material spraying device of the present invention, when a large granular material adhered to the spraying roller passes through the brush doctor, the flexible brush follows the surface of the granular material. It spreads while contacting and allows the granular material to pass along the rotation of the spreading roller while adhering to the surface. At this time, there is no gap around the granular material unlike conventional metal doctors. For this reason, a granular material with a small particle diameter is not sprayed in large quantities in the width direction of a to-be-dispersed body with a granular material with a large particle diameter, and can be uniformly distributed. Further, in particular, when the amount of the granular material applied is very small, uniform application can be performed, and the effect can be further exhibited.

In addition, although the attachment position of the doctor was demonstrated with the structure which made the blade edge | tip contacted along the axial direction above the surrounding surface of the spreading roller, it is not restricted to this but it is axially on the circumferential surface side of the spreading roller as usual. It may be configured to contact along Thereby, the volume of a granular material storage tank can be enlarged.
In addition, specific examples of the granular material to be dispersed in the present invention include a polymer material, alumina, activated carbon, and the like.
As an example, when alumina is used as the powder and the adhesive sheet is used as the material to be sprayed, the surface of the material to be sprayed is uniformly sprayed with powder having a large particle size to form irregularities on the surface. Thus, a sheet for the purpose of improving functionality such as prevention of slipping can be produced.

  The granular material spraying device of the present invention is particularly useful as a device for spraying granular materials for the purpose of improving physical functionality with respect to materials to be sprayed such as daily necessities, industrial products, and foods.

DESCRIPTION OF SYMBOLS 1 ......... Sprinkling roller, 2 ......... Powder body with large particle diameter, 3 ......... Doctor, 4 ......... Gap, 5 ......... Powder body with small particle diameter, 10 ......... Powder body Spreading device, 12 ......... Spread body, 11 ... Casing, 11a ......... Top plate, 11b ......... Side wall, 14 ......... Conveyance path, 16 ...... Powder granules, 18 ...... Powder Granule storage tank, 20 ... spraying roller ..., 30 ...... doctor, 32 ...... doctor stop plate, 34 ...... fastening means, 40 ...... brush doctor, 50, 50A, 50B ......... brush presser Plate 60 ......... Angle adjusting means 62 ......... Brush support member 64 ......... First support portion 64a ......... Hole 66 ......... Second support portion 68 ......... Shaft 70 ... …… Bearing, 80 ……… Spacer, 90 ……… Felt.

Claims (5)

In the powder distribution device for rotating the spray roller disposed in the lower part of the powder storage tank and spraying the powder adhered to the roller surface to the sprayed object,
A linear brush doctor in contact with the peripheral surface of the spreading roller along the axial direction;
The brush doctor directs the bristles of the brush toward the rotation direction of the spreading roller, does not contact the bristles of the brush with the circumferential surface of the spreading roller, and tilts the side surface of the tip of the brush to surround the circumferential surface of the spreading roller. A granular material spraying device characterized in that it is brought into contact with.   The powder particle spraying device according to claim 1, further comprising a brush pressing plate that is supported along the side surface of the brush doctor from the outside of the powder particle storage tank. An angle adjusting means comprising a shaft disposed along the axial direction of the spray roller, and a brush support member that supports the brush doctor and the brush pressing plate,
The angle adjusting means can swing the brush support member around the shaft in a direction approaching or separating from the spraying roller, and when the brush doctor contacts the peripheral surface of the spraying roller, The tip side is bent, The granular material spraying apparatus of Claim 1 or 2 characterized by the above-mentioned.   The granular material spraying device according to claim 3, wherein the angle adjusting means includes a spacer for fixing the brush doctor arranged at a predetermined angle. Comprising a doctor in contact with the peripheral surface of the spreading roller along the axial direction;
The powder body spraying device according to any one of claims 1 to 4, wherein the doctor makes the blade edge contact along the axial direction above the peripheral surface of the spraying roller.

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