JP2009006302A - Damping material coating method and damping material coating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for applying a damping material which can uniformly apply the damping material on the entire surface to be coated and can secure the NV performance and rigidity of a panelized member with the damping material applied on the surface to be coated. <P>SOLUTION: The discharge opening 5 of a nozzle 1 is formed to be octagonal, and the damping material is pushed out and discharged from the discharge opening 5 to be applied. In this way, the dense damping material containing no air can be applied, and the NV performance and rigidity of the panelized member can be improved. The film of the damping material in which a cross-sectional shape has no definite dispersion, and the surface is smooth can be formed on the surface to be coated of the panel-shaped member. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a damping material coating method and a damping material coating apparatus, and in particular, a damping material is applied to a surface to be coated by moving a nozzle having a slot-shaped discharge port along the surface to be coated. The present invention relates to a method and an apparatus.

  Damping materials are used throughout the car body. For example, a high-viscosity damping material is applied to the surface (surface to be coated) of a floor panel (panel-like member). When applying a high-viscosity damping material in this way, the nozzle is operated along the surface of the floor panel by a robot, for example, while supplying the damping material to the nozzle (see FIG. 1). In this case, first, the nozzle is moved in the vertical direction (longitudinal direction of the floor panel), and the damping material is applied to one side of the floor panel. Next, after moving the nozzle in the horizontal direction (floor panel width direction), the nozzle is moved in the vertical direction, that is, along the edge of the damping material applied in a strip shape on one side of the floor panel. Apply damping material to the other side of the floor panel. Thereby, a damping material is apply | coated to one surface of a floor panel (for example, refer patent document 1).

By the way, the damping material applied using the nozzle of the prior art has its film thickness (cross section height) adjusted by controlling the feed rate of the nozzle, as shown in FIG. A thin film (damping material) having a film thickness T0 (for example, T0 = 0.2 mm) is folded in the vertical direction to form a wave-shaped film having a film thickness T1 (for example, T1 = 4.5 mm) as a whole. Thus, in the prior art, since the damping material 4 is formed in a wave shape, air is contained between the folded thin films. As a result, the NV performance (N is Noise and V is Vibration) and the rigidity of the floor panel are reduced, and the control of the film thickness T1 of the damping material is difficult (the film thickness T1 varies). Furthermore, in the prior art, it is extremely difficult to make the gap between the adjacent band-shaped damping materials 4 zero, and in order to eliminate the gap between the band-shaped damping materials 4, that is, to prevent a decrease in NV performance, As FIG. 14 shows, the edge between the adjacent damping materials 4 is piled up. As a result, the thickness of the mating portion of the damping material 4 is twice the thickness of the band-shaped damping material 4, and the mating portion of the damping material 4 may interfere with surrounding parts.
JP 2002-273317 A

  Therefore, the present invention has been made in view of the above circumstances, and the NV of the panel-like member in which the damping material can be uniformly applied to one surface of the coated surface and the damping material is coated on the coated surface. An object of the present invention is to provide a vibration damping material coating method and a vibration damping material coating apparatus capable of ensuring performance and rigidity.

In order to solve the above-described problems, a vibration damping material application method of the present invention includes a step of applying a high-viscosity vibration damping material in a band shape to a surface to be coated of a panel-like member, and a method for applying the vibration damping material applied in the band shape. A method for applying a damping material, comprising: applying a next damping material to the surface to be coated in a strip shape so that the edges of each other are aligned along the edge. The discharge port of the nozzle is formed in a slot shape in which the width and the opening are matched with the width and height of the transverse section of the band-shaped damping material formed on the coated surface, and each end on both sides in the width direction of the discharge port The nozzles are formed in such a manner that the center of the discharge port crossing both ends of the discharge port is symmetrical with respect to the axis of symmetry and the opening of each end is gradually decreased outward in the width direction. The damping material is ejected so as to be pushed out from the ejection port while moving in the coating direction along the surface to be coated of the shaped member. And wherein applying a damping material to the fabric surface.
According to the damping material coating method of the present invention, the damping material is ejected so as to be pushed out from the ejection port, so that the band-shaped damping material whose width and height of the cross section are equal to the width and opening of the ejection port is covered. It is applied to the application surface. Thereby, in the damping material coating method of the present invention, an air layer is formed between the folded thin films (damping materials) as in the conventional technique for forming a wave-shaped film (damping material). There is nothing. Therefore, in the vibration damping material application method of the present invention, the vibration damping material can be applied more densely than in the prior art, so that the NV performance and rigidity of the panel-like member can be enhanced. In addition, each end of the slot-shaped discharge port is formed so that the opening becomes smaller toward the outside, so even if the damping material is applied in parallel, the matching portion between adjacent damping materials The thickness does not become larger than the film thickness (cross section height) of the band-shaped damping material.

In order to solve the above-described problems, the vibration damping material coating apparatus of the present invention moves the nozzle along the coated surface of the panel-like member to apply a high-viscosity damping material on the coated surface in a strip shape. In the vibration material application device, the nozzle includes an introduction port into which the vibration damping material is introduced, a width of a cross-section of the band-shaped vibration damping material formed in a slot shape and having a width and an opening formed on a surface to be coated, and A discharge port that is aligned with the height, and a space that is formed so that the width is expanded from the introduction port to the discharge port and is supplied with the damping material introduced from the introduction port, Each end on both sides in the width direction of the discharge port is formed symmetrically with the center line of the discharge port crossing both ends of the discharge port as a symmetry axis, and each opening is gradually reduced outward in the width direction. Features.
According to the vibration damping material coating apparatus of the present invention, the band-shaped vibration damping material having a cross section having a width and height equal to the width and opening of the discharge port is applied to the surface to be coated. No air layer is formed between the folded thin films (damping materials) as in the prior art for forming a shaped film (damping material). Therefore, in the vibration damping material coating apparatus of the present invention, the vibration damping material can be coated more densely than in the prior art, so that the NV performance and rigidity of the panel-like member can be enhanced. In addition, each end of the slot-shaped discharge port is formed so that the opening becomes smaller toward the outside, so even if the damping material is applied in parallel, the matching portion between adjacent damping materials The thickness does not become larger than the film thickness (cross section height) of the band-shaped damping material.

(Aspect of the Invention)
In the following, aspects of the invention that is recognized as being capable of being claimed in the present application (hereinafter referred to as claimable invention) will be exemplified, and each exemplified aspect will be described. Here, as in the claims, each aspect is divided into paragraphs, numbers are assigned to the respective paragraphs, and the descriptions of other paragraphs are cited as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combination of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiment, etc., and as long as the interpretation is followed, another aspect is added to the aspect of each section. Moreover, the aspect which deleted the component from the aspect of each term can also be one aspect of the claimable invention.
In each of the following items, each of items (1) to (7) corresponds to each of claims 1 to 7.

(1) A step of applying a high-viscosity damping material in a strip shape to the surface to be coated of the panel-like member, and the edges of the damping material applied in this strip shape so that the edges of each other are aligned. A method of applying a damping material to the application surface in a strip shape, and forming a nozzle outlet for applying the damping material with a width and an opening on the application surface The slot-shaped damping material is formed into a slot shape that matches the width and height of the cross-section of the band-shaped damping material, and each end on both sides in the width direction of the discharge port is centered on the discharge port across both ends of the discharge port. Symmetric with respect to the axis of symmetry, and each opening at each end is formed to be gradually reduced outward in the width direction, and the nozzle is moved in the coating direction along the coated surface of the panel-like member. The damping material is applied to the surface to be coated by ejecting the damping material through the ejection port. Damping material application how.
According to the damping material application method described in this section, a band-shaped damping material in which the width and height of the cross section are equal to the width and opening of the ejection port by ejecting the damping material so as to be pushed out from the ejection port. Is applied to the surface to be coated. As a result, in the aspect of this section, an air layer is formed between the folded thin films (damping materials), as has been a problem in the prior art for forming a corrugated film (damping material). There is nothing to do. Therefore, in the aspect of this section, since the damping material can be applied more densely than in the prior art, the NV performance and rigidity of the panel-like member can be enhanced. In addition, each end of the slot-shaped discharge port is formed so that the opening becomes smaller toward the outside, so even if the damping material is applied in parallel, the matching portion between adjacent damping materials The thickness does not become larger than the film thickness of the band-shaped damping material.
In the aspect of this section, the shape of the discharge port is formed in, for example, an octagon that is long in the width direction.

(2) A vibration damping material applicator for moving a nozzle along a surface to be coated of a panel-like member and applying a high-viscosity vibration damping material to the surface to be coated in a strip shape. An introduction port to be introduced, a discharge port that is formed in a slot shape and has a width and an opening formed on the surface to be coated, and is matched to the width and height of the transverse section of the band-shaped damping material; Each of the end portions on both sides in the width direction of the discharge port is formed so that the width of the discharge port is expanded. A vibration-damping material coating apparatus, characterized in that it is formed symmetrically with the center line of the discharge port crossing both end portions as a symmetry axis, and each opening is gradually decreased outward in the width direction.
According to the vibration damping material coating apparatus described in this section, a strip-shaped vibration damping material having a cross section having a width and height equal to the width and opening of the discharge port is applied to the surface to be coated. As in the prior art for forming (damping material), an air layer is not formed between folded thin films (damping materials). Therefore, in the aspect of this section, since the damping material can be applied more densely than in the prior art, the NV performance and rigidity of the panel-like member can be enhanced. In addition, each end of the slot-shaped discharge port is formed so that the opening becomes smaller toward the outside, so even if the damping material is applied in parallel, the matching portion between adjacent damping materials The thickness does not become larger than the film thickness of the band-shaped damping material.

(3) The nozzle has a nozzle body in which concave portions are formed on the dividing surface, a nozzle lid attached to the dividing surface of the nozzle body, a nozzle body having a plate thickness equal to the opening of the discharge port, and the nozzle body and the nozzle lid. And a spacer having a cutout portion formed in a rectangular shape, and the discharge port includes one side of the nozzle body, one side of the nozzle lid, and a cutout portion. The vibration damping material coating apparatus according to (2), including both end faces in the width direction.
According to the damping material coating apparatus described in this section, the thickness of the damping material formed on the coated surface is changed because the thickness of the spacer matches the opening of the discharge port due to the structure of the nozzle. However, it can be quickly and easily handled by simply replacing the spacer with a plate thickness corresponding to the film thickness.

(4) The nozzle has a notch portion disposed in the space portion, and in the space portion, the most downstream portion stores the damping material supplied to the space portion facing the notch portion. (3) The vibration damping material application apparatus according to (3), wherein the vibration damping material is discharged so as to be pushed out from the discharge port after being filled in the accumulation unit.
According to the vibration damping material application apparatus described in this section, the vibration damping material is supplied from the inlet of the nozzle to the space, flows down toward the discharge port, and is accumulated in the accumulation unit. The vibration damping material is discharged from the discharge port so as to be pushed out after being filled in the accumulation portion. Thereby, in the aspect of this term, a dense damping material (not including air) is discharged from the discharge port. And the damping material discharged so that it may be extruded from this discharge port is apply | coated so that it may affix on a to-be-coated surface.

(5) The nozzles are disposed on both sides in the width direction of the nozzle body and are respectively opposed to the main body side convex portions that are in contact with the end surfaces in the width direction of the notches of the spacer, and the main body side convex portions. Each end on the both sides in the width direction of the discharge port is formed by each main body side convex portion and each lid side convex portion. (3) or (4) the damping material coating apparatus in which each opening of each is gradually decreased toward the outside in the width direction.
According to the vibration damping material coating apparatus described in this section, the convex portions are disposed on the nozzle body and the nozzle lid body, and the respective convex portions are projected between the end surfaces on both sides in the width direction of the notch portion of the spacer. Thus, the opening of each end of the discharge port can be gradually reduced. In the aspect of this section, the shape of the ejection port is determined by the shape of each projection, in particular, the shape of one side of each projection that forms a part of the ejection port. Each side is constituted by a straight line or a curve.

(6) Each end on both sides in the width direction of the discharge port is gradually reduced toward the outside in the width direction of the discharge port by recesses formed on both end surfaces in the width direction of the notch of the spacer. (3) or (4) damping material coating apparatus.
According to the vibration-damping material coating apparatus described in this section, the opening of each end of the discharge port can be gradually reduced by each recess formed in the spacer. In the aspect of this section, as compared with the aspect of (5), if the width of the notch is the same, a discharge port having a larger width is formed. Moreover, it can be implemented by additional machining of spacers.

(7) The damping material application device according to (2) to (6), wherein the discharge port is formed in an octagon extending in the width direction.
According to the vibration damping material coating apparatus described in this section, in the aspect (5), when the nozzle is viewed from the front, the projections are formed in an octagonal shape by forming each convex portion in a right triangle. Can be formed. In addition, at each end on both sides in the width direction of the discharge port, the adjacent vertices of the main body side convex portion and the lid side convex portion are matched on both end surfaces in the width direction of the notch portion of the spacer, thereby It can also be formed in a hexagon.

  A damping material application method that can uniformly apply the damping material to one surface of the coated surface, and can ensure the NV performance and rigidity of the panel-like member on which the damping material is coated. In addition, a vibration damping material coating apparatus can be provided.

An embodiment of the present invention will be described with reference to FIGS.
The vibration damping material coating apparatus of the present embodiment moves the nozzle 1 along the coated surface 3 of the panel-shaped member 2 so that the edges of each other are aligned, and the coated surface on one side of the panel-shaped member 2. The damping material 4 is applied to the belt 3 in a band shape, and the nozzle 1 is made to correspond to the width of the damping material 4 coated in a band shape on the coated surface 3 (the width of the cross section of the damping material 4). After being moved in the panel width direction, the vibration damping material 4 is moved along the edge of the vibration damping material 4 applied in a strip shape on the coated surface 3 on one side of the panel-like member 2. A high-viscosity damping material 4 is applied to one surface of the panel-like member 1 on the surface to be coated 2 by coating in a strip shape on the other surface to be coated 3 of the panel-like member 2. In the vibration damping material coating apparatus, the width (W) and opening (H) of the discharge port 5 of the nozzle 1 are set to the width and height of the cross section of the vibration damping material 4 coated on the coated surface 3. The vibration damping material 4 is applied so as to be affixed onto the coated surface 3 of the panel-like member 2 while being discharged so as to push out the vibration damping material 4 from the discharge port 5.

  The nozzle 1 is divided into a nozzle body 6, a nozzle lid body 7, and a spacer 8. The nozzle body 6 is formed in a symmetrical polygon (hexagon in this embodiment) whose width is expanded downward in a front view shown in FIG. Further, the nozzle body 6 is formed with a concave portion 10 having a shape substantially similar to a polygon formed by the nozzle body 6 on the dividing surface 6a. Furthermore, the nozzle body 6 is provided with an introduction port 12 communicating with the recess 10 on the upper surface 11 thereof, and a damping material supply pipe 13 (see FIG. 1) is connected to the introduction port 12. In the nozzle body 6, a boss 14 is erected substantially at the center of the bottom surface 10 a of the recess 10. Further, the nozzle body 6 is formed with an abutting portion 15 that extends in the width direction (left-right direction in FIG. 2) and abuts the nozzle lid 7 and the spacer 8 on the upper part of the dividing surface 6a. The nozzle lid body 7 and the spacer 8 are positioned in the vertical direction (vertical direction in FIG. 2) and are prevented from rotating about the axis of the boss 14 by contacting the contact portion 15 of the nozzle body 6.

  The nozzle lid body 7 is formed in a flat plate shape, and, as shown in FIG. 4, the outer shape of the nozzle lid body 7 is substantially equal to the lower portion from the contact portion 15 of the nozzle body 6 in FIG. Hexagonal in shape. Further, the nozzle lid body 7 is formed with a bolt insertion hole 17 aligned with a screw hole 16 screwed into the boss 14 of the nozzle body 6. As shown in FIGS. 6 and 7, the spacer 8 is a sheet metal part that is bent at 90 ° by the bent portion 18, and is a polygon in which the outer shape of the upper portion from the bent portion 18 is substantially equal to the nozzle lid body 7. (In this embodiment, it is a hexagon). Further, the spacer 8 is formed with a long hole 19 extending from the upper side to the center thereof, and even when the bolt is screwed into the screw hole 16 of the boss 14 of the nozzle body 6, the long hole 19 is formed. By using it, the spacer 8 can be inserted and removed between the nozzle body 6 and the nozzle lid 7.

  Further, the spacer 8 is formed with a rectangular cutout 20 extending in the width direction (left-right direction in FIG. 6). The width of the notch 20 (width dimension and position in the width direction) is matched to the opening shape of the recess 10 of the nozzle body 6. Further, the notch 20 is set such that the distance L1 from the upper side to the start position is at least shorter than the distance L0 from the contact portion 15 of the nozzle body 6 to the wall surface 10b of the recess 10 in FIG. It is formed from the start position to the bent portion 18. Then, the nozzle 1 is configured such that the nozzle lid 7 is superimposed on the dividing surface 6a of the nozzle body 6 so that the upper side of the nozzle lid 7 abuts against the contact portion 15 of the nozzle body 6, and in this state, the nozzle The tip of the bolt inserted into the bolt insertion hole 17 of the lid body 7 is screwed into the screw hole 16 formed in the boss 14 of the nozzle body 6. Furthermore, the spacer 8 is inserted between the nozzle body 6 and the nozzle lid 7 while operating the operation part 21 of the spacer 8 and guiding the elongated hole 19 of the spacer 8 with a bolt, and the upper side of the spacer 8 is set to the nozzle body 6. In this state, the bolt 1 is tightened to form the nozzle 1 as shown in FIGS.

On the other hand, as shown in FIGS. 2 to 5, convex portions 22 and 23 are disposed on both sides in the width direction at the lower part of the dividing surface 6 a of the nozzle body 6. In addition, at the lower part of the mating surface 7 a of the nozzle lid 7, convex portions 24 and 25 are disposed on both sides in the width direction so as to be opposed to the convex portions 22 and 23. These convex portions 22 to 25 are formed in a triangular pyramid shape, and when the nozzle 1 is formed by combining the nozzle lid 7 and the spacer 8 as shown in FIGS. 8 and 9, the respective convex portions 22 to 25 are formed. The side surfaces 22a to 25a facing the outer side in the width direction of 25 are brought into contact with (facing each other) the end surface 20a of the notch portion 20 of the spacer 8 and the bottom surfaces 22b to 25b facing the lower side of the convex portions 22 to 25. Are arranged flush (on the same plane) with respect to the lower end surface 6 b of the nozzle body 6 and the lower end surface 7 b of the nozzle lid 7. As shown in FIG. 8, the discharge port 5 of the nozzle 1 has a ridge line between the dividing surface 6 a and the lower end surface 6 b of the nozzle body 6, a ridge line between the mating surface 7 a and the lower end surface 7 b of the nozzle lid 7, and The oblique sides 22c to 25c of the bottom surfaces 22b to 25b of the convex portions 22 to 25 are formed into octagons that are long in the width direction (left and right direction in FIG. 8).
As a result, as shown in FIG. 8, the discharge port 5 has a center at which the end portions 5a and 5b on both sides in the width direction (both sides in the left and right direction in FIG. 8) cross the end portions 5a and 5b. The line C is symmetrical with respect to the axis of symmetry (C), and the openings of the ends 5a and 5b are tapered, that is, the openings are gradually decreased outward in the width direction.

  As shown in FIG. 9, the nozzle 1 has a space 9 formed therein, and the most downstream portion of the space 9 faces the notch 20 and is supplied to the space 9. An accumulation part 26 in which the vibration material 4 is accumulated is formed. In the vibration damping material application device, the vibration damping material 4 is supplied from the introduction port 12 to the space 9 of the nozzle 1, and the vibration damping material 4 flows down the space 9 and is accumulated in the accumulation unit 26. . When the damping material 4 is filled in the accumulating portion 26 and the pressure is increased, the cross-sectional shape indicated by P in FIG. 9 is rectangular (rectangular) and is recessed from the discharge port 5 by the wall thickness of the wall of the nozzle body 6. In this structure, the liquid is finally discharged from the discharge port 5 having an octagonal cross section while being squeezed from the position toward the discharge port 5. Then, the discharged damping material 4 is applied in a band shape so as to be attached onto the coated surface 3 of the panel-shaped member 2 with a substantially unchanged cross section.

Next, a vibration damping material application method using the vibration damping material application apparatus of this embodiment will be described.
First, as shown in FIG. 1, while discharging the vibration damping material 4 from the discharge port 5 of the nozzle 1, the nozzle 1 is moved along the coated surface 3 of the panel-like member 2 to thereby dampen the vibration. The material 4 is applied in a band shape on the application surface 3 on one side of the panel-like member 2. Next, the nozzle 1 is moved in the panel width direction by a predetermined distance, that is, a distance corresponding to the band width of the vibration damping material 4 applied in a band shape on the coated surface 3 (here) In this case, only the movement of the nozzle 1 is performed, and the damping material 4 is not ejected from the ejection port 5), while the ejection of the damping material 4 is pushed out from the ejection port 5 of the nozzle 1. The vibration damping material 4 is moved in a band shape on the coated surface 3 on the other side of the panel-like member 2 by moving along the edge of the vibration damping material 4 coated in a band shape on the coated surface 3 on one side. Apply. Thereby, as shown in FIG. 10, the damping material 4 is applied to one surface of the panel-like member 1 on the coated surface 2.

  In this embodiment, the ejection port 5 of the nozzle 1 is formed in an octagon, and the vibration damping material 4 is ejected so as to be pushed out from the ejection port 5 of the nozzle 1 to be coated 3 of the panel-like member 2. By applying as if attached to the top, mutual edges at the boundary between the strip-shaped damping material 4 applied to one side of the panel-like member 2 and the strip-shaped damping material 4 applied to the other side Do not create a gap between them. Here, FIG. 11 shows (1) the panel-like member 2 coated with the damping material 4 using the damping material coating method of the present embodiment, and (2) the prior art, that is, a thin film (damping material). A panel-like member 2 coated with the damping material 4 using a conventional damping material coating method in which the damping material 4) is folded in the vertical direction (coating direction) to form a corrugated film as a whole, and (3 ) A single-point vibration test result with the panel-like member 2 to which the damping material 4 is not applied. As shown in this figure, the panel-like member 2 of (1) has a peak inertance of 78.2 (db), and the panel-like member 2 of (2) has a peak inertance of 79.6 (db), (3 ) Panel-like member 2 had a peak inertance of 91.3 (db).

  From the results of this single point vibration test, the panel-like member 2 using the conventional damping material application method (2) is compared with the panel-like member 2 not coated with the damping material 4 (3). It can be seen that the inertance is reduced by 11.7 (db), that is, the NV performance is improved. Further, the panel-like member 2 using the vibration damping material application method of the present embodiment of (1) has an inertance of 1.4 compared to the panel-like member 2 of the prior art vibration damping material application method of (2). It can be seen that (db) decreases, that is, the NV performance is further improved.

This embodiment has the following effects.
According to the present embodiment, the width (W) and opening (H) of the discharge port 5 of the nozzle 1 are set to the width (band width) of the transverse section of the band-shaped damping material 4 applied on the coated surface 3 and The vibration-damping material 4 is ejected from the ejection port 5 of the nozzle 1 so as to be pushed out, and the vibration-damping material 4 is applied on the coated surface 3 of the panel-like member 2. Therefore, as compared with the prior art, the damping material 4 does not form a wave-shaped film to form an air layer, and the damping material 4 can be applied more densely. The NV performance of the member 2 can be improved. In addition, a film of the damping material 4 having a smooth surface with a uniform cross-sectional shape can be formed on the coated surface 3 of the panel-like member 2. Furthermore, since the damping material 4 can be applied more densely, the rigidity of the panel-like member 2 can be increased. In other words, the film thickness of the damping material 4 to be applied can be reduced while ensuring NV performance and rigidity compared to the prior art.
In addition, the nozzle 1 is formed so that the slot-shaped discharge port 5 is formed in an octagon so that the opening of each end 5a, 5b of the discharge port 5 becomes smaller toward the outside. Even when the damping material 4 is applied in parallel so as not to cause a gap in the mating portion between the four, the mating portion of the damping material 4 is larger than the film thickness of the belt-like damping material. There is nothing, and interference with peripheral parts can be prevented.
Further, in the nozzle 1, the end portions 5a and 5b on both sides in the width direction of the discharge port 5 are formed symmetrically with the center line C crossing the end portions 5a and 5b as the symmetry axis (C), and in the coating direction. There is no directionality, that is, the cross-sectional shape of the damping material 4 when applied while the nozzle 1 is moved forward is the same as the cross-sectional shape of the damping material 4 when applied while the nozzle 1 is moved backward. Therefore, when the damping material 4 is applied in parallel to the application surface 3, the nozzle 1 can be efficiently moved to suppress an increase in man-hours.
Further, since the nozzle 1 matches the plate thickness of the spacer 8 with the opening of the discharge port 5, even if the thickness of the damping material 4 formed on the coated surface 3 is changed, the thickness of the nozzle 1 is changed. It is possible to respond quickly and easily by simply replacing the spacer 8 with a thickness corresponding to the above.
Moreover, since the nozzle 1 discharges from the discharge port 5 so as to push out after the damping material is filled in the accumulation portion, the dense (not including air) damping material 4 is discharged from the discharge port 5 in a band shape. Further, the damping material 4 can be applied so as to be attached to the surface 3 to be applied.

In addition, embodiment is not limited above, For example, you may comprise as follows.
In the present embodiment, the discharge port 5 is formed in an octagon, but the opening of each end 5a, 5b is gradually reduced outward in the width direction, and each end 5a, 5b is connected to each end 5a, If the center line C crossing 5b is formed symmetrically with respect to the symmetry axis (C), for example, as shown in FIG. 12, the end portions 5a and 5b may be formed with curves.
Further, in the present embodiment, the convex portions 22 to 25 are provided on the nozzle body 6 and the nozzle lid body 7 to form the ejection port 5 in an octagonal shape, but the width direction side end surfaces of the notch portion 20 of the spacer 8 are formed. You may comprise so that opening of each edge part 5a, 5b of the discharge outlet 5 may be gradually reduced toward the width direction outer side by each recessed part formed. In this case, if the width of the notch portion 20 of the spacer 8 is the same as that of the prior art, the discharge port 5 having a larger width can be formed and the spacer 8 can be additionally processed. .

It is a figure which shows a mode that the damping material is apply | coated to the to-be-coated surface of a panel-shaped member by moving a nozzle. It is a front view of the nozzle main body of this embodiment. It is BB sectional drawing in FIG. It is a front view of the nozzle cover body of this embodiment. It is a left view of the nozzle cover body of FIG. It is a front view of the spacer of this embodiment. FIG. 7 is a DD arrow view in FIG. 6. It is a bottom view of the nozzle of this embodiment. It is an AA arrow line view in FIG. It is a figure which shows the damping material apply | coated in parallel on the to-be-coated surface of the panel-shaped member by the nozzle of this embodiment. (1) A panel-like member coated with a damping material using the nozzle of the present embodiment, (2) a panel-like member coated with a damping material using conventional technology, and (3) a damping material applied It is a single point vibration test result with the panel-shaped member which is not. It is a figure which shows the discharge outlet shape of the nozzle of other embodiment. It is a figure which shows the longitudinal cross-sectional shape of the damping material apply | coated using the prior art. It is a figure which shows the damping material apply | coated in parallel on the to-be-coated surface of the panel-shaped member with the nozzle of the prior art.

Explanation of symbols

1 nozzle, 2 panel-like member, 3 surface to be coated, 4 damping material, 5 discharge port, 6 nozzle body, 7 nozzle lid, 8 spacer, 9 space, 10 recess, 20 notch, 22-25 convex Part, 26 accumulation part

Claims (7)

The step of applying a high-viscosity damping material in a strip shape on the coated surface of the panel-shaped member, and the coated surface so that the edges of the damping material are applied along the edge of the damping material applied in the strip shape. A step of applying the following damping material in a strip shape, and a damping material application method comprising:
The discharge port of the nozzle for applying the damping material is formed in a slot shape in which the width and the opening are matched to the width and height of the transverse section of the band-like damping material formed on the coated surface, The ends on both sides in the width direction of the discharge port are symmetric with respect to the center line of the discharge port crossing both ends of the discharge port, and the opening of each end is gradually decreased outward in the width direction. So that
While the nozzle is moved in the coating direction along the coated surface of the panel-like member, the damping material is ejected so as to be pushed out from the ejection port, and the damping material is coated on the coated surface. Damping material application method. A vibration damping material coating apparatus that moves a nozzle along a coated surface of a panel-like member and applies a high-viscosity damping material to the coated surface in a strip shape,
The nozzle is aligned with the width and height of an introduction port into which the damping material is introduced, and a cross-section of the strip-like damping material formed in a slot shape and having a width and an opening formed on the coated surface. A discharge port, and a space that is formed so that a width is expanded from the introduction port toward the discharge port and is supplied with a damping material introduced from the introduction port.
The end portions on both sides in the width direction of the discharge port are formed symmetrically with the center line of the discharge port crossing both ends of the discharge port as the symmetry axis, and the respective openings are outward in the width direction of the discharge port. A damping material coating device characterized by being gradually reduced toward the surface. The nozzle has a nozzle body in which a concave portion is formed on a dividing surface, a nozzle lid attached to the dividing surface of the nozzle body, and has a plate thickness equal to the opening of the discharge port, and the nozzle body and the nozzle lid The spacer is interposed between the body and is divided into a spacer having a notch formed in a rectangular shape.
3. The vibration damping device according to claim 2, wherein the discharge port includes one side of the nozzle body, one side of the nozzle lid, and both side end surfaces in the width direction of the notch. Material applicator. The nozzle has the notch disposed in the space,
In the space portion, the most downstream portion is formed with an accumulation portion that accumulates the damping material supplied to the space portion facing the notch portion,
The said damping material is discharged so that it may be extruded from the said discharge outlet after being filled in the said accumulation | storage part. The nozzles are disposed on both sides in the width direction of the nozzle body and are respectively opposed to the main body side convex portions that are in contact with the respective end surfaces in the width direction of the notches of the spacer, and the main body side convex portions. And each lid body side convex portion disposed on the nozzle lid body,
Each of the end portions on both sides in the width direction of the discharge port is configured such that the opening of each end portion is gradually reduced outward in the width direction of the discharge port by the main body side convex portion and the lid side convex portion. The vibration damping material coating apparatus according to claim 3 or 4, characterized in that: Each end portion on both sides in the width direction of the discharge port is formed by recesses formed on both end surfaces in the width direction of the notch of the spacer so that each opening of each end portion faces outward in the width direction of the discharge port. The damping material coating apparatus according to claim 3 or 4, wherein the damping material coating apparatus is gradually decreased. The damping material coating apparatus according to claim 2, wherein the discharge port is formed in an octagon extending in the width direction.

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