JP4649243B2 - Sealer nozzle device - Google Patents

Description

  The present invention relates to a nozzle device for applying a sealant.

  The inner structure of the wheel arch portion indicated by oblique lines in the vehicle body shown in FIG. 7 is substantially U-shaped in a state where the outer plate 31 and the frame members 32 and 33 are overlapped as shown in FIG. And a structure having such a bent portion can increase the rigidity of the wheel arch portion. On the other hand, in this structure, since water tends to accumulate in the groove formed by bending, the sealing agent S is applied in the groove for the purpose of preventing the frame material 33 from being rusted.

  FIGS. 8A to 8C show a conventional application process of the sealing agent S. First, as shown in FIG. 8A, the nozzle 34 is moved along the wheel arch portion while filling the entire groove section with the sealing agent S. By doing so, the sealing agent S is filled in the grooves in the entire range of the wheel arch. In this state (a), the rust prevention function is already achieved, but the rust prevention function is sufficient if the sealing agent S is applied in the form of a film on the inner surface of the groove, and the seal is applied as shown in (a). If the agent S is filled in the entire groove, it leads to a problem of increasing the vehicle weight. Particularly, since there are a plurality of wheel arch portions, the problem of the total weight of the sealant S is large.

  Therefore, conventionally, the above-mentioned problem has been addressed by removing the excess sealing agent S with the brush 35 or the like as shown in (b). Although this removal work is performed by a skilled worker, it still tends to vary in the finish of removal, so after the step (b), finish with the hand mirror 37 while illuminating the groove with the portable light 36 as shown in (c). The process of carrying out a visual check of was required.

In addition, what was disclosed by patent document 1 is mentioned as a prior art example of the nozzle which apply | coats the sealing compound S to a wheel arch part. However, the nozzle described in the document is intended to seal around the joint end portions of a plurality of panels, and is difficult to apply to the inner surface application of the groove.
Japanese Utility Model Publication No. 3-15680 (FIGS. 1 to 3)

  The steps (b) and (c) are unnecessary steps. In particular, since the groove is formed in a narrow space on the inner side of the wheel arch, the worker must perform the work (b) and (c) in the state of the middle waist from the lower side of the vehicle body. The degree of labor burden is also severe. Further, the conventional coating method is uneconomical because the sealant S is wasted.

  The present invention was created to solve the above problems, and provides a sealer coating nozzle device capable of coating a sealing agent in the form of a film on the entire inner surface of a groove having a substantially U-shaped cross section. It is an object.

To solve the above problems, the present invention is, upward and coloration a cross section substantially U that opens, is formed by bending the molding of a plurality of plate members overlapping and upper edge of its one side surface of said plurality of plate members A sealer coating nozzle device for coating a sealant in the form of a film on the entire inner surface of a groove composed of a joining edge, comprising a linear nozzle tip shaft inserted into the groove from the upper opening toward the bottom of the groove The nozzle tip shaft is provided with a pair of side surface discharge holes formed along the axial direction and facing both side surfaces of the groove, and a bottom portion discharge hole formed at the shaft end and facing the bottom of the groove. Furthermore, an edge nozzle facing the joint edge and applying the joint edge simultaneously with application in the groove is provided, and the edge nozzle has an axial direction of the nozzle tip axis as a longitudinal direction. It has a long hole shape and is for one side with the joint edge in between An edge discharge hole that faces the outlet hole, and a tube wall portion that extends from the upper portion of the edge discharge hole to a position that is perpendicular to the outer peripheral surface of the nozzle tip shaft, and is formed on the joint edge. A sealer coating nozzle device comprising a discharge groove that opens toward the sealant.

According to this sealer coating nozzle device, the sealant discharged from the side discharge hole is applied in a film shape to the side surface of the groove, and the sealant discharged from the bottom discharge hole is applied to the bottom of the groove. The sealing agent is applied in the form of a film over the entire inner surface of the groove.
And according to this sealer application | coating nozzle apparatus, application | coating in a groove | channel and application | coating of a joining edge part can be simultaneously performed with a simple structure.

  In the present invention, the sealer coating nozzle device is characterized in that the side discharge hole and the bottom discharge hole are formed on the nozzle tip shaft apart from each other.

  According to this sealer coating nozzle device, the strength around the axial end of the nozzle tip shaft is increased, so that deformation of the side surface discharge holes and the bottom portion discharge holes can be prevented.

  In the present invention, the side surface discharge hole is a sealer coating nozzle device characterized in that the downstream side is set to be larger than the upstream side with respect to the discharge amount distribution of the sealing agent in the longitudinal direction.

  According to this sealer application nozzle device, the downward sag of the sealant applied to the side surface of the groove is good, and as a result, the application state around the bottom of the groove is good.

  In the present invention, the sealer coating nozzle device is characterized in that the side surface discharge hole is composed of a slit, and the downstream side is formed larger than the upstream side with respect to the slit width.

  According to the sealer application nozzle device, the discharge amount distribution can be adjusted with a simple slit process.

  According to the present invention, the labor burden on the operator is reduced and the consumption of the sealing agent can be reduced.

  1A and 1B are a side view and a plan view, respectively, of a sealer coating nozzle device according to the present invention, FIG. 2 is a perspective view around a nozzle tip axis, and FIGS. 3A and 3B are nozzles, respectively. Side cross-section explanatory drawing around a front-end | tip axis | shaft, front explanatory drawing, (c) is BB sectional drawing in (a). The sealer application nozzle apparatus 1 is used as an apparatus for applying a sealant to the inner surface of a groove having an approximately U-shaped cross-section that opens upward, such as the groove on the inner side of the wheel arch shown in FIGS. 7 and 8. Examples of the sealing agent include silicone resin.

  In FIG. 1, a sealer coating nozzle device 1 includes a base pipe part 3 connected to a known discharge gun (not shown) via a fixing nut 2, and a bifurcated joint part 4 on the upstream side of the base pipe part 3. The 1st nozzle pipe 5 and the 2nd nozzle pipe 6 which are formed through are provided. When the operator operates the operation lever of the discharge gun, the sealant is pumped to the sealer application nozzle device 1 and discharged from the discharge holes described later of the first nozzle tube 5 and the second nozzle tube 6. The feature of the present invention is mainly around the tip of the first nozzle tube 5.

  In FIG. 2 or FIG. 3, the first nozzle tube 5 is bent at the tip side thereof at approximately 90 degrees, and the linear nozzle tip shaft 7 is formed after the bent portion. The nozzle tip shaft 7 is formed with a pair of side surface discharge holes 8 along the axial direction at a position directly facing 180 degrees across the axis, and the nozzle tip shaft 7 is placed in the groove toward the bottom of the groove. When inserted, each side discharge hole 8 faces each side of the groove. In the present embodiment, the side surface discharge holes 8 are constituted by slits. However, as described in Patent Document 1, as a modified example, a plurality of small diameter holes are formed in tandem. Can be mentioned. However, since the sealing agent is discharged while being connected in the case of the slit, it is excellent in the uniformity of the film thickness when applied to the side surface of the groove.

  At the shaft end of the nozzle tip shaft 7, a bottom discharge hole 9 is formed facing the bottom of the groove. 2 and 3 show a case where the bottom discharge hole 9 is formed of a circular hole centered on the axis of the nozzle tip shaft 7.

  Next, the second nozzle tube 6 will be described. The second nozzle tube 6 is provided for the purpose of sealing around the joining edge portion of the outer plate 31 and the frame members 32 and 33 shown in FIG. As can be seen from FIG. 1, the second nozzle pipe 6 is generally arranged along the first nozzle pipe 5, and the tip portion is a so-called flat-mouth nozzle in which the pipe is crushed as can be seen from FIGS. 2 and 3. A long hole-shaped discharge hole whose longitudinal direction is the axial direction of the nozzle tip shaft 7 faces the outer peripheral surface of the nozzle tip shaft 7. This discharge hole constitutes the edge discharge hole 10 for discharging the sealing agent around the joint edge of the outer plate 31 and the frame members 32 and 33 shown in FIG. The tube portion constituting the upper portion of the edge discharge hole 10 is extended as it is so as to abut against the outer peripheral surface of the nozzle tip shaft 7 and is welded to the first nozzle tube 5 to weld it. The mutual support rigidity with the second nozzle tube 6 is increased. Further, the lower part of the extended portion is configured as a discharge groove 11 connected to the edge discharge hole 10, and thereby, as will be described later, the outer plate 31 and the frame members 32 and 33 shown in FIG. The degree of rotation of the sealing agent to the joint edge is improved.

  The operation of the sealer coating nozzle device 1 having the above configuration will be described. First, as shown in (a) of FIG. 4 (a side action explanatory diagram showing the application state of the sealing agent S by the sealer application nozzle device 1), the nozzle tip shaft 7 is inserted into the groove toward the bottom of the groove. At this time, the side discharge hole 8 faces each side of the groove, and the bottom discharge hole 9 faces the bottom of the groove. Further, the edge discharge hole 10 and the discharge groove 11 face around the joint edge of the outer plate 31 and the frame members 32 and 33.

  When the sealant S is pressure-fed and supplied in this state, as shown in (b), in the groove, the sealant S discharged from the side surface discharge hole 8 is applied in a film form on the side surface of the groove, and the bottom portion The sealing agent S discharged from the discharge hole 9 is applied to the bottom of the groove. Further, the sealant S discharged from the edge discharge hole 10 is applied around the joint edge of the outer plate 31 and the frame members 32 and 33. At that time, a part of the sealant S also flows into the discharge groove 11 and is discharged from the discharge groove 11 toward the joint edge as a discharge direction orthogonal to the discharge direction of the edge discharge hole 10. Since it becomes an aspect, the surroundings of the sealing agent to a joining edge part become favorable, and the film thickness of the sealing agent S in a joining edge part can be made uniform.

  And in the groove, immediately after application, the sealant S applied to the side surface and the sealant S applied to the bottom part are applied to the side surface over time even if they are slightly separated. When the sealing agent S gradually hangs down, the sealing agent S is applied in a film form over the entire inner surface of the groove as shown in (c).

  Thus, as shown in (a) of FIG. 5 (schematic diagram of the application state of the sealing agent S in the groove), the sealing agent S needs to be applied over the entire inner surface of the groove, Thus, even after a predetermined time has elapsed, the sealing agent S applied to the side surface and the sealing agent S applied to the bottom remain separated, or an air pool can be formed at the bottom of the groove as shown in (c). The state should be avoided from the viewpoint of rust prevention.

  Here, FIGS. 6A to 6D show various types of nozzle tip shafts 7 which the inventor made experimentally by changing the shapes of the side discharge holes 8 and the bottom discharge holes 9 (the upper diagrams are respectively shown). The top view and the bottom view are perspective views). 6 (a) and 6 (b) both show the case where the side surface discharge hole 8 and the bottom portion discharge hole 9 are formed continuously, and FIG. 6 (a) shows the slit width constant in the side surface discharge hole 8. FIG. , (B) shows that the downstream part is made larger than the upstream part with respect to the slit width of the side surface discharge hole 8. FIGS. 6C and 6D show a case where the side surface discharge hole 8 and the bottom portion discharge hole 9 are formed so as to be separated from each other, and FIG. 6C shows the slit width of the side surface discharge hole 8. The bottom discharge hole 9 is made of a slit perpendicular to the slit of the side discharge hole 8, and (d) shows the bottom discharge hole 8 with a constant slit width of the side discharge hole 8. 9 is composed of a circular hole.

  As a result of testing with these various nozzle tip shafts 7, it was found that the nozzle tip shaft 7 of FIGS. 6A, 6C, and 6D is likely to be in the application state of FIG. 5B. This is because the sealing agent S is discharged in a large amount at the upstream portion of the slit and the discharge amount is likely to be insufficient on the downstream side because the slit width in the side discharge hole 8 is made constant.

  On the other hand, the slit width on the downstream side is made larger than the slit width on the upstream side as in the side surface discharge hole 8 shown in FIGS. 2 and 3 and the side surface discharge hole 8 in FIG. When the step slit shape is used, a resistance force is generated in the sealing agent S in the upstream pipe having a small slit width, and the discharge can be performed from the downstream side having a large slit width. It was found that it can be secured. However, if the discharge amount on the downstream side of the side surface discharge hole 8 is too large, the discharge amount from the bottom portion discharge hole 9 is easily combined and an air pool as shown in FIG. 5C is formed. It tends to be in a coated state. Once the air pool is formed, it is difficult to eliminate it unless there is an air passage.

  As a result of the test, as shown in FIG. 4 (b), the side surface discharge holes 8 and the bottom portion discharge holes are formed so that the sealant S applied to the side surfaces and the sealant S applied to the bottom portion are slightly separated immediately after application. It has been found that if the shape of 9 is set, so-called air passages are formed to prevent air accumulation. If the discharge amount on the downstream side of the side surface discharge hole 8 is sufficient due to the two-stage slit shape or the like, the degree of sagging below the sealant S applied to the side surface of the groove will be good, and eventually the figure As shown in 4 (c), the sealing agent S is applied in the form of a film over the entire inner surface of the groove.

  As described above, the linear nozzle tip shaft 7 inserted into the groove from the upper opening toward the bottom of the groove is provided, and the nozzle tip shaft 7 is formed along the axial direction. The sealer coating nozzle device 1 is provided with a pair of side surface discharge holes 8 facing both side surfaces and a bottom portion discharge hole 9 formed at the shaft end and facing the bottom of the groove. The sealing agent S can be applied in the form of a film over the entire inner surface. Therefore, at least the step of removing the sealing agent S shown in FIG. 8B is not necessary, and the confirmation step shown in FIG. 8C can be omitted if the coating state is confirmed to be stable. Thereby, the labor burden on the operator is reduced, and the consumption of the sealing agent S can be reduced.

  In the present invention, the side discharge hole 8 and the bottom discharge hole 9 may be formed continuously as shown in FIGS. 6 (a) and 6 (b). 6 (c) and 6 (d) are formed so as to be separated from each other, the strength around the end of the nozzle tip shaft 7 is increased, and particularly when the side surface discharge hole 8 is a slit, the slit is deformed. Is prevented.

  Further, in the side surface discharge hole 8, if the discharge amount distribution of the sealant S in the longitudinal direction (that is, the axial direction of the nozzle tip shaft 7) is set so that the downstream side is larger than the upstream side, the side surface of the groove The sag of the sealant S applied to the bottom is good, and the application state around the bottom of the groove is good. As a specific example, as in the present embodiment, the side surface discharge hole 8 is constituted by a slit, and the downstream side may be formed larger than the upstream side with respect to the slit width. Adjustment of the discharge amount distribution is realized. It should be noted that “the downstream side is larger than the upstream side” in the discharge amount distribution includes not only a case where it is gradually increased as in the present embodiment but also a case where it gradually increases.

  Further, as in this embodiment, the groove is formed by bending a plurality of overlapping plate members (outer plate 31, frame members 32, 33), and one side upper edge thereof has a plurality of plate members (outer plate 31). In this case, the edge nozzle (second nozzle tube) is formed with an edge discharge hole 10 that faces the joint edge and performs application simultaneously with application in the groove. By using the sealer coating nozzle device 1 having 6), it is possible to simultaneously perform coating in the groove and coating of the joining edge portion with a simple configuration.

  Although the preferred embodiment has been described above, the sealer coating nozzle device 1 of the present invention is not limited to seal coating on a vehicle body, and any technical field can be used as long as it is intended for seal coating in a substantially U-shaped groove. Is applicable.

(A), (b) is the side view and top view of a sealer application nozzle device concerning the present invention. It is a perspective view around a nozzle tip axis. (A), (b) is side sectional explanatory drawing around a nozzle tip axis, front explanatory drawing, (c) is BB sectional drawing in (a). It is side surface explanatory drawing which shows the application | coating state of the sealing compound by a sealer application | coating nozzle apparatus. It is a schematic diagram of the application | coating state of the sealing agent in a groove | channel. It is various explanatory drawing of the nozzle tip axis | shaft which changed the shape about the discharge hole for side surfaces, and the discharge hole for bottom parts. It is a side view of a vehicle body. It is AA sectional drawing in FIG. 7, and is a figure which shows the application | coating process of the conventional sealing agent.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sealer application nozzle apparatus 5 1st nozzle pipe 6 2nd nozzle pipe 7 Nozzle tip axis 8 Side discharge hole 9 Bottom discharge hole 10 Edge discharge hole

Claims (4)

Upward and coloration of the opened substantially U-shaped cross section, it is formed by bending the molding of a plurality of plate members overlapping and sealing the entire inner surface of the groove upper edge of its one side is made of a joint edge portion of the plurality of plate members A sealer coating nozzle device for coating the agent in a film form,
A linear nozzle tip shaft inserted into the groove from the upper opening toward the bottom of the groove,
The nozzle tip shaft is provided with a pair of side surface discharge holes formed along the axial direction and facing both side surfaces of the groove, and a bottom portion discharge hole formed at the shaft end and facing the bottom of the groove ,
Furthermore, the nozzle for edge part which faces the said joining edge part and performs the application of the said joining edge part simultaneously with application | coating in the said groove | channel,
The edge nozzle is
An edge discharge hole that has an elongated hole shape with the axial direction of the nozzle tip axis as a longitudinal direction and faces one of the side surface discharge holes across the joint edge;
A discharge groove that is formed in a tubular portion extending from the upper portion of the edge discharge hole to a position that is perpendicular to the outer peripheral surface of the nozzle tip shaft, and that opens toward the bonding edge;
Sealer coating nozzle device, characterized in that it comprises a.   The sealer coating nozzle device according to claim 1, wherein the side discharge hole and the bottom discharge hole are formed on the nozzle tip shaft so as to be separated from each other.   The sealer coating nozzle device according to claim 1, wherein the side surface discharge hole is set to have a larger downstream side than an upstream side with respect to a discharge amount distribution of the sealing agent in a longitudinal direction thereof.   The sealer coating nozzle device according to claim 3, wherein the side surface discharge hole is formed of a slit, and the downstream side is formed larger than the upstream side with respect to the slit width.

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