JP2017124505A - Application device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an application device that enables uniform application of resin to an end face of a wood-based substrate.SOLUTION: In an application device 1, a resin application member 3 includes an upper application roll 31 and a lower application roll 32 that are substantially disc-shaped, and which rotate around one and the same vertical axis Z1. The upper application roll 31 and the lower application roll 32 are located near to each other, and one above the other. The upper application roll and the lower application roll have a first roll surface 31a and a second roll surface 32a respectively at the respective outer peripheral edges, the first roll surface and the second roll surface having substantially identical diameters. A resin supply member 4 has a substantially disc-shaped supply roll 41 that rotates around a horizontal axis Z2. The supply roll includes a front face 411 of which a portion near the upper side of the supply roll is near to and faces the first roll surface and the second roll surface. A distance L1 between the supply roll and the first roll surface is greater than a distance L2 between the supply roll and the second roll surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coating apparatus. More specifically, this invention relates to the coating device for apply | coating resin to the end surface of a wood type base material.

  Conventionally, a hydrophobic resin is applied to the end face of a wood-based base material to increase the water resistance (waterproofness) of the decorative board.

  For example, in Patent Document 1, a resin adhesive is supplied to a roll of an adhesive application member by a rotating adhesive supply roll, and the roll surface is rotated while being in contact with an end surface of a wooden base material. A coating apparatus for applying an adhesive to the end face of a system substrate is described.

JP-A-2015-74107

  However, in the case of the coating apparatus of Patent Document 1, there is a problem that it is difficult to uniformly apply the resin to the end surface of the wooden base material depending on the area of the end surface of the wooden base material or the form of the adhesive application member. .

  This invention is made | formed in view of the above situations, and makes it a subject to provide the coating device which can apply | coat resin uniformly to the end surface of a wood type base material.

In order to solve the above-described problems, the coating apparatus of the present invention is a coating apparatus that applies a resin to the end face of a wooden base material,
A resin application member and a resin supply member;
The resin application member includes a substantially disk-shaped upper application roll and a lower application roll that rotate about the same axis in the vertical direction,
The upper coating roll and the lower coating roll are arranged close to each other in the vertical direction, and the first roll surface on the outer peripheral edge of the upper coating roll and the second roll surface on the outer peripheral edge of the lower coating roll Are formed with approximately the same diameter,
The resin supply member includes a substantially disc-shaped supply roll that rotates about a horizontal direction as an axis,
The front surface near the upper side of the supply roll, the first roll surface and the second roll surface are close to each other,
An interval between the supply roll and the first roll surface is larger than an interval between the supply roll and the second roll surface,
The resin adhering to the rotating supply roll is supplied to the rotating upper application roll and the lower application roll so that the resin can be applied to the end surface of the woody base material.

  According to the coating apparatus of the present invention, the resin can be uniformly applied to the end face of the woody base material.

(A) is the schematic which illustrated one Embodiment of the coating device of this invention, (B) is an enlarged view of the X section of (A). (A) is the schematic which illustrated another embodiment of the coating device of this invention, (B) is an enlarged view of the Y section of (A).

  FIG. 1A is a schematic view illustrating an embodiment of the coating apparatus of the present invention, and FIG. 1B is an enlarged view of a portion X in FIG.

  The coating device 1 is a device that applies the resin R to the end surface 2 a of the wooden base material 2 in order to improve the water resistance (waterproofness) of the wooden base material 2, and includes a resin coating member 3 and a resin supply member 4. And.

  The wood-based substrate 2 is, for example, a particle board, a medium density fiberboard (MDF), a plywood, a mixed board (Wood Plastic Board: WPB) formed by molding a mixture of wood powder and resin into a plate shape. ) And the like.

  Moreover, as illustrated in FIG. 1A, the wooden base material 2 may have a decorative material 21 disposed on the surface thereof. Examples of the decorative material 21 include a synthetic resin sheet such as vinyl chloride resin and polyurethane, a single plate, MDF, and the like.

  Resin R is preferably hydrophobic, and is a hot-melt type resin such as ethylene vinyl acetate resin, reactive urethane resin, polyolefin, or a room temperature curable type resin such as urethane resin, epoxy resin, vinyl acetate resin, or vinyl urethane resin. Resin etc. can be illustrated. In this embodiment, the resin R is stored in the storage tank 5 whose upper end side is open.

  The resin application member 3 includes an upper application roll 31, a lower application roll 32, and a first rotating shaft portion 33.

  The upper application roll 31 and the lower application roll 32 have a substantially disk shape having substantially the same diameter, and are arranged close to each other in the vertical direction. Specifically, the upper coating roll 31 has a first roll surface 31a that is flat in the vertical direction on the outer peripheral edge, and the diameter is reduced downward. The lower coating roll 32 has a second roll surface 32a that is flat in the vertical direction on the outer peripheral edge, and the diameter decreases toward the top. The first roll surface 31a of the upper coating roll 31 and the second roll surface 32a of the lower coating roll 32 are designed to have substantially the same diameter (length from the center to the first roll surface 31a and the second roll surface 32a). Yes. The size of the upper coating roll 31 and the lower coating roll 32, the distance between the first roll surface 31a and the second roll surface 32a, and the like can be appropriately designed according to the area of the end surface 2a of the wood base 2 and the like. .

  The material of the upper application roll 31 and the lower application roll 32 is preferably an inexpensive and easy-to-process material, and examples thereof include synthetic resin, rubber, and metal.

  The first rotating shaft portion 33 extends in a substantially vertical direction, and communicates from above the vicinity of the centers of the upper coating roll 31 and the lower coating roll 32 that are disposed substantially horizontally. Therefore, the upper application roll 31 and the lower application roll 32 are rotatable in a substantially horizontal direction with the first rotation shaft portion 33 as the same axis Z1.

  The resin supply member 4 includes a supply roll 41 and a second rotating shaft portion 42.

  The supply roll 41 has a substantially disk shape that stands in the vertical direction, and is connected to one end of a second rotating shaft portion 42 that extends in the substantially horizontal direction near the center, and the second rotating shaft portion 42 (horizontal direction) is an axis. It can freely rotate as the center Z2.

  The front surface (surface on the resin coating member 3 side) 411 positioned on the upper side in the vertical direction of the supply roll 41 and the first roll surface 31a of the upper coating roll 31 and the second roll surface 32a of the lower coating roll 32 face each other. Are arranged as follows.

  In the supply roll 41, a substantially disc-shaped large-diameter roll portion 41A located on the second rotating shaft portion 42 side and a substantially disc-like small-diameter roll portion 41B located on the resin coating member 3 side are connected in a horizontal direction. ing. The large diameter roll part 41A and the small diameter roll part 41B may be joined separately or may be integrally formed. The large-diameter roll portion 41A and the small-diameter roll portion 41B are connected to each other around the second rotation shaft portion 42, and the large-diameter roll portion 41A is formed to have a larger outer diameter than the small-diameter roll portion 41B. For this reason, the supply roll 41 corresponds to the outer diameter difference between the large-diameter roll portion 41A and the small-diameter roll portion 41B on the entire circumference in the vicinity of the outer peripheral edge 43 of the front surface 411 facing the upper-stage application roll 31 and the lower-stage application roll 32. The peripheral edge portion 44 is formed. That is, the peripheral step 44 is an annular shape that is recessed in the direction away from the upper application roll 31 and the lower application roll 32 on the outer side of the outer edge of the small diameter roll 41B.

  The front surface of the large-diameter roll portion 41A exposed from the peripheral step 44 and the first roll surface 31a are horizontally opposed, and the front surface of the small-diameter roll portion 41B and the second roll surface 32a are horizontally aligned. Opposite. For this reason, the space | interval L1 between the supply roll 41 (large diameter roll part 41A) and the 1st roll surface 31a is larger than the space | interval L2 between the supply roll 41 (small diameter roll part 41B) and the 2nd roll surface 32a. Is formed.

  More specifically, the distance L2 between the small diameter roll portion 41B and the second roll surface 32a can be exemplified as a range of about 0.1 mm to 0.3 mm. Further, the distance L1 between the large diameter roll part 41A and the first roll surface 31a may be designed to be about 1.5 to 5 times the distance L2 between the small diameter roll part 41B and the second roll surface 32a. it can.

  Furthermore, the storage tank 5 is installed below the supply roll 41, and a portion located on the lower side in the vertical direction of the supply roll 41 is disposed so as to be immersed in the resin R in the storage tank 5.

  The supply roll 41 is preferably made of a material that is inexpensive and easy to process. Examples thereof include synthetic resin, rubber, and metal.

  When the resin R is applied to the end surface 2a of the woody base material 2 using the coating apparatus 1, the surface is formed on the side of the first roll surface 31a of the upper coating roll 31 and the second roll surface 32a of the lower coating roll 32. The end surface 2a of the woody base material 2 arranged so that the side faces the upper side in the vertical direction is brought close to each other. The distance L3 between the first roll surface 31a and the second roll surface 32a and the end surface 2a of the wooden substrate 2 is not particularly limited as long as the resin R can be supplied to the end surface 2a of the wooden substrate 2. For example, a distance of about 0.1 mm to 0.3 mm can be exemplified.

  In this coating apparatus 1, by rotating the supply roll 41, the resin R in the storage tank 5 is spread over the large-diameter roll part 41A and the small-diameter roll part 41B of the supply roll 41, and the resin is placed on the upper part in the vertical direction. Can carry R.

  The resin R transported to the portion positioned on the upper side in the vertical direction is supplied to the first roll surface 31a of the upper coating roll 31 and the second roll surface 32a of the lower coating roll 32 that face each other in the horizontal direction. . Further, for example, by adjusting the rotation speed of the supply roll 41, the supply amount of the resin R from the supply roll 41 to the first roll surface 31a and the second roll surface 32a can be adjusted.

  The resin R supplied to the first roll surface 31a and the second roll surface 32a is rotated around the first roll surface 31a and the second roll surface 32a by rotating the upper coating roll 31 and the lower coating roll 32. R spreads and the resin R can be supplied to the gap L3. The resin R supplied to the gap L3 and the end surface 2a of the wood base 2 are in contact with each other, whereby the resin R is applied to the end surface 2a of the wood base 2.

  In this coating apparatus 1, since the resin coating member 3 includes the upper coating roll 31 and the lower coating roll 32, for example, even when the area of the end surface 2a of the wood base 2 is large, the resin R is applied to the entire end surface 2a. Can be spread.

  When two stages of application rolls are provided on the upper and lower sides and the resin R is applied to the end surface 2a of the wooden base material 2, the application amount of the resin R below the end surface 2a of the wooden base material 2 is the upper resin R. It is difficult to uniformly apply the resin R over the entire end surface 2a. However, in this coating apparatus 1, the peripheral step part 44 is formed in the supply roll 41, and the interval L1 between the large diameter roll part 41A and the first roll surface 31a is the small diameter roll part 41B and the second roll surface. It is formed larger than the distance L2 between 32a. For this reason, the resin amount supplied from the large-diameter roll part 41A to the upper application roll 31 and the resin amount supplied from the small-diameter roll part 41B to the lower application roll 32 are adjusted, and the entire area of the end surface 2a of the wood base 2 is adjusted. The resin R can be applied uniformly. Therefore, a decorative board in which leakage of the resin R from the end surface 2a of the woody base material 2 to the front and back surfaces is suppressed can be obtained. The obtained decorative board can be used for various uses, such as a system kitchen and a door of a washstand, for example.

  FIG. 2 (A) is a schematic view illustrating another embodiment of the coating apparatus of the present invention, and FIG. 2 (B) is an enlarged view of a Y portion in FIG. 2 (A). Portions common to the embodiment described with reference to FIG. 1 are denoted by the same reference numerals, and description thereof is omitted below.

  In the coating apparatus 1 according to this embodiment, the supply roll 41 has an inclined surface 45 formed on the front surface 411 located on the side facing the first roll surface 31 a of the upper coating roll 31 and the second roll surface 32 a of the lower coating roll 32. Has been. The inclined surface 45 is inclined in a direction away from the first roll surface 31a and the second roll surface 32a from the axial center Z2 side toward the outer peripheral edge 44 side.

  Therefore, also in the coating apparatus 1 of this embodiment, the space | interval between the supply roll 41 and the 1st roll surface 31a is on the outer edge part 43 side rather than the space | interval between the supply roll 41 and the 2nd roll surface 32a. It is getting bigger gradually.

  For this reason, the amount of resin supplied to the upper application roll 31 from the upper side in the vertical direction of the supply roll 41 and the amount of resin supplied to the lower application roll 32 from the vicinity of the center of the supply roll 41 in the vertical direction are adjusted. Accordingly, the resin R can be uniformly applied from the upper stage application roll 31 and the lower stage application roll 32 to the entire end surface 2a of the woody base material 2.

  The coating apparatus 1 according to the present invention is a coating apparatus 1 that applies a resin to the end surface 2 a of the wood-based substrate 2, and includes a resin coating member 3 and a resin supply member 4. The resin coating member 3 includes a substantially disk-shaped upper coating roll 31 and a lower coating roll 32 that rotate about the same axis Z1 in the vertical direction. The upper coating roll 31 and the lower coating roll 32 are joined to each other vertically, and the first roll surface 31a at the outer peripheral edge of the upper coating roll 31 and the second roll surface 32a at the outer peripheral edge of the lower coating roll 32 are They are formed with substantially the same diameter. The resin supply member 4 includes a substantially disc-shaped supply roll 41 that rotates about the horizontal direction as an axis Z2. The front surface 411 near the upper side of the supply roll 41, the first roll surface 31a, and the second roll surface 32b are close to each other. An interval L1 between the supply roll 4 and the first roll surface 31a is larger than an interval L2 between the supply roll 41 and the second roll surface 32a. The resin R adhering to the rotating supply roll 41 is supplied to the rotating upper application roll 32a and the lower application roll 32b, and the resin R can be applied to the end surface 2a of the woody base material 2.

  In the coating apparatus 1, the supply roll 41 has a first roll surface 31 a and a second roll on the entire circumference near the outer peripheral edge 43 of the front surface 411 located on the side facing the first roll surface 31 a and the second roll surface 32 a. It is preferable that a peripheral step 44 that is recessed in a direction away from the surface 32a is provided. It is preferable that the peripheral step 44 and the first roll surface 31a face each other.

  In this coating apparatus 1, it is preferable that the supply roll 41 has the inclined surface 45 formed on the front surface 411 located on the side facing the first roll surface 31a and the second roll surface 32a. The inclined surface 45 is formed to be inclined in a direction away from the first roll surface 31a and the second roll surface 32a from the axial center Z2 side toward the outer peripheral edge 43 side.

  The coating apparatus of this invention is not limited to the above embodiment at all. For example, the shape of the supply roll of the resin supply member and the shapes of the upper application roll and the lower application roll of the resin application member are not limited to the forms illustrated in FIGS. 1 and 2. For example, the upper stage application roll and the lower stage application roll need only have a circular outer periphery, and the first roll surface and the second roll surface of the outer periphery may be flat in the vertical direction. A conical shape or a truncated cone shape may be used. That is, in the coating apparatus of the present invention, the “substantially disk shape” regarding the shapes of the upper coating roll and the lower coating roll includes such a columnar shape, a conical shape, a truncated cone shape, and the like. The same applies to the shape of the supply roll. The distance between the upper application roll and the upper application roll only needs to be larger than the distance between the supply roll and the lower application roll, and various shapes can be designed.

DESCRIPTION OF SYMBOLS 1 Application | coating apparatus 2 Wood base material 2a End surface 3 Resin application member 31 Upper stage application roll 31a 1st roll surface 32 Lower stage application roll 32a 2nd roll surface 4 Resin supply member 41 Supply roll 41A Large diameter roll part 41B Small diameter roll part 43 Outer periphery 44 peripheral step 45 inclined surface R resin

Claims (3)

A coating device for applying a resin to an end face of a wooden base material,
A resin application member and a resin supply member;
The resin application member includes a substantially disk-shaped upper application roll and a lower application roll that rotate on the same axis in the vertical direction, and the upper application roll and the lower application roll are arranged close to each other vertically. And, the first roll surface of the outer peripheral edge of the upper application roll and the second roll surface of the outer peripheral edge of the lower application roll are formed with substantially the same diameter,
The resin supply member includes a substantially disc-shaped supply roll that rotates about a horizontal direction as an axis,
The front surface near the upper side of the supply roll, the first roll surface and the second roll surface are close to each other,
An interval between the supply roll and the first roll surface is larger than an interval between the supply roll and the second roll surface,
The coating apparatus is characterized in that the resin adhering to the rotating supply roll is supplied to the rotating upper coating roll and the lower coating roll so that the resin can be applied to the end surface of the wood-based substrate. .   The supply roll has a peripheral edge recessed in a direction away from the first roll surface and the second roll surface on the entire periphery near the outer peripheral edge of the front surface located on the side facing the first roll surface and the second roll surface. The coating apparatus according to claim 1, further comprising a stepped portion, wherein the peripheral stepped portion and the first roll surface are in close proximity to each other. The supply roll is separated from the first roll surface and the second roll surface on the front surface located on the side facing the first roll surface and the second roll surface from the axial center side toward the outer peripheral edge side. The coating apparatus according to claim 1, wherein an inclined surface inclined in a direction is formed.

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