JPH1015456A - Coating nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to surely apply a highly viscous fluid on a surface of a work by inclining an opening edge part of a lower end opening to a vertical axis in a manner of following along an inclination of a surface of the work in a coating nozzle having a pipe shape and provided with a notch for forming beads of the high viscous fluid at the lower edge surrounding wall. SOLUTION: The coating nozzle 1 having a pipe shape of a circular cross-section is extended vertically and the notch 1A for forming adhesive beads A and the notch 1B for completely jointing a start point of the adhesive beads A with the end point thereof are formed at the lower edge surrounding wall 1r. The opening edge part 1a of the lower end opening 1o of the coating nozzle is formed by being inclined to a vertical axis in a manner to follow along an inclination of a surface Ws of window glass W. In this case, since the opening edge part 1a follows along the surface Ws of the window glass W when the adhesive beads A are formed on the inclined part of the window glass W, a space is heard to generate between the window glass W and the coating nozzle 1 and the highly viscous fluid can be surely applied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating nozzle for continuously applying a high-viscosity fluid to a work surface.

[0002]

2. Description of the Related Art For example, in a manufacturing line for a four-wheeled vehicle (automobile), a so-called direct glazing in which a window glass is directly attached to a body using an adhesive is adopted in an outfitting assembly process of attaching a window glass to a body. ing.

In direct glazing equipment,
The equipment for applying the paste-like adhesive to the window glass is, as shown in FIG. 10, an industrial robot R holding an adhesive discharge gun G, and a constant flow of the adhesive supplied to the adhesive discharge gun G by pressure. The apparatus has an adhesive supply device S and a jig device J for fixing and supporting a window glass W as a work at a predetermined work position. The adhesive discharge gun G is moved by a preset operation of the industrial robot R. The adhesive bead A is formed over the entire circumference of the window glass W by sending the adhesive from the application nozzle N of the adhesive discharge gun G and applying the adhesive continuously while moving on a predetermined trajectory. .

The application nozzle N of the adhesive discharge gun G is shown in FIG.
1 and FIG. 12, the opening edge Ne of the lower end opening No is formed perpendicular to the axis, and a notch Na for forming an adhesive bead is formed on the lower end peripheral wall Nr; A notch Nb for completely joining the start point and the end point of the adhesive bead is formed. The configuration, operation mode, and operation and effect of the notch Nb are disclosed in Japanese Utility Model Application Laid-Open No. 62-75879 filed by the present applicant, and a detailed description of the notch Nb will be omitted.

On the other hand, as shown in FIG. 13, a window glass (window shield) W is attached to a vehicle body (front pillar) B from one direction as indicated by an arrow. In addition, the code | symbol M in the figure is the molding attached to the periphery of the window glass W, and the code | symbol T is the trim attached to the body (front pillar) B. FIG.

As described above, since the window glass W is assembled to the body B from one direction, the adhesive bead A on the window glass W is set substantially horizontally on the jig device J as shown in FIG. It is formed so as to stand in the vertical direction (v-v line) with respect to the window glass W, and the application nozzle N of the adhesive discharge gun G for making the adhesive bead A stand in the vertical direction is as shown in FIG. It extends along the vertical direction (vv line).

Further, the application nozzle N of the adhesive discharge gun G
As shown in FIG. 16, the notch Na for forming the adhesive bead A is always positioned on the back side in the moving direction, and while sending out the adhesive from the lower end opening No, the arrows a,
As shown by b, c, and d, the adhesive is moving around the periphery of the window glass W, whereby the adhesive bead A is continuously formed at a predetermined position following the edge We of the window glass W.

As shown in FIGS. 12 and 13, a black ceramic coating is applied to the periphery of the window glass W to prevent the adhesive from deteriorating due to ultraviolet rays of sunlight and to decorate. The adhesive bead is applied in the above-mentioned ceramic coating portion Wb in a manner following the shape of the edge portion We of the window glass W.

[0009]

By the way, as the body shape of a four-wheeled vehicle becomes complicated in recent years, the shape of a window glass W such as a windshield (a windshield), a quarter window, or a back door window is also complicated. For example, in a window shield, the shape has changed from a shape close to a conventional flat surface to a shape curved so that the left and right ends are turned toward the front pillar of the body.

On the other hand, as shown in FIG. 17, a gap t of about 3 ± 2 mm is set between the surface of the window glass W and the application nozzle N in order to avoid mutual contact. Since the urethane-based adhesive is a high-viscosity fluid, a non-contact portion Oa is provided between the adhesive (bead) A discharged from the application nozzle N and the window glass W along the moving direction of the application nozzle N. , Ob.

Here, as shown in FIG. 17B, the inclination is steeper as shown in FIG. 17B than the length La of the non-contact portion Oa when the adhesive is applied to the portion where the inclination is gentle. In a situation in which the adhesive is applied to an appropriate part, a large space is generated between the application nozzle N and the window glass W, so that the above-described length Lb of the non-contact portion Ob is extremely large.

For this reason, in the case where the adhesive is applied to the corners of the left and right ends of the window glass W having the curved left and right ends as described above, the preset locus F shown in FIG. Since the position of the moving application nozzle N and the position of contact of the adhesive with the window glass W greatly deviate, the adhesive F is drawn into the inside of the corner with the movement of the application nozzle N, so that the adhesive is adhered as shown in FIG. The agent bead F is disadvantageously formed at a position deviated from the intended formation position (chain line position) following the edge portion We of the window glass W to the inside of the corner.

As shown in FIG. 19, when the adhesive is applied to the edge of the window glass W which is greatly inclined, the tip of the application nozzle N and the surface of the window glass W are separated from each other. Then, the adhesive extruded from the tip of the application nozzle N slides down the surface of the window glass W, and the adhesive bead A is formed so as to be shifted from an intended position, or the adhesive bead A is formed by the inclination of the window glass W. There were inconveniences such as falling to the center side (left side in the figure) of the window glass W.

The present invention has been made in view of the above circumstances, and has as its object to provide a coating nozzle capable of reliably applying a high-viscosity fluid to the surface of a work.

[0015]

Therefore, in the coating nozzle according to the present invention, the opening edge of the lower end opening of the coating nozzle is inclined with respect to the vertical axis in a manner following the inclination of the surface of the work. The above objective has been achieved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing some embodiments. 1 to 9
In the outfitting and assembling process of the automobile production line, the application nozzle according to the present invention is applied to an adhesive application equipment in a direct glazing equipment for applying a paste-like polyurethane adhesive to a window glass as a work. An example of application is shown.

The construction of the adhesive application equipment other than the application nozzle is basically the same as that of the conventional adhesive application equipment shown in FIG. 10 and thereafter, and the adhesive ejection gun provided with the application nozzle is operated. An industrial robot, an adhesive supply device for supplying an adhesive to the adhesive discharge gun, and a jig device for fixing and supporting the window glass W at a work position are provided, and the adhesive discharge gun is moved by the industrial robot. Meanwhile, an adhesive bead is formed over the entire circumference of the window glass by sending out the adhesive from the application nozzle.

The coating nozzle 1 shown in FIGS. 1 to 3 has a pipe shape of a circular cross section and extends in the vertical direction, and has a large triangular shape for forming an adhesive bead on its lower peripheral wall 1r. A notch 1A and a small triangular notch 1B for completely joining the start point and the end point of the adhesive bead are provided.

Further, the lower end opening 1 of the coating nozzle 1
The opening edge 1a of o is formed so as to be inclined with respect to the vertical axis, and the opening edge 1a rises from the notch 1A toward the notch 1B, that is, toward the front in the moving direction of the application nozzle 1. In this embodiment, as is apparent from FIG. 2B, the window glass W is formed following the inclination of the surface Ws.

In the coating nozzle 1 having the above structure, FIG.
When the adhesive bead A is formed on the inclined portion of the window glass W as shown in FIG.
Since the opening edge portion 1a of the application nozzle 1 follows, the large space between the window glass W and the application nozzle 1 does not occur.

That is, as shown in FIG. 2B, in the conventional application nozzle N, the adhesive bead A and the window glass W
A large non-contact portion having a length L ′ is generated between the application bead 1 and the application nozzle 1 of the present invention. The length L of the non-contact portion between A and the window glass W is extremely small.

Here, when the adhesive bead A is formed around the window glass W using the coating nozzle 1 having the above configuration, as shown in the right half of FIGS. 3A and 3B,
When the adhesive bead A is formed in the lower edge of the window glass W at an inclined portion just before the corner, the opening edge 1a of the application nozzle 1 is moved to the surface Ws of the window glass W.
Will be imitated.

At this time, since the length L of the non-contact portion between the adhesive bead A and the window glass W is extremely small as described above, when the adhesive is applied to the corner of the window glass W, the application nozzle N The adhesive bead A is formed at an intended position following the edge portion We of the window glass W.

As shown in the left half of FIGS. 3 (a) and 3 (b), when the adhesive bead A is formed at the lower edge of the window glass W immediately after the corner, the adhesive nozzle A Since the lowermost end of the opening edge 1a is close to the surface of the window glass W, a non-contact portion is unlikely to occur between the adhesive bead A and the window glass W in the rear area of the opening edge 1a. The adhesive bead A is formed at an expected position following the edge We of the window glass W.

The adhesive bead A is also formed at an expected position following the edge We of the window glass W at the inclined portion immediately before the corner at the upper edge of the window glass W and also at the inclined portion passing through the corner. Needless to say, as described above, the application nozzle 1 is particularly effective in a situation where an adhesive bead is formed at a corner while climbing the inclined portion of the window glass W.

The coating nozzle 2 shown in FIGS. 4 to 6 has a pipe shape with a circular cross section and extends in the vertical direction, and has a large triangular shape for forming an adhesive bead on its lower peripheral wall 2r. A notch 2A and a small triangular notch 2B for completely joining the start and end points of the adhesive bead are provided.

Further, the lower end opening 2 of the coating nozzle 2
The opening edge 2a of o is formed so as to incline with respect to the vertical axis, and the opening edge 2a inclines to the upper right with respect to the moving direction of the application nozzle 2, and is specifically evident from FIG. Thus, it is formed following the inclination of the surface Ws of the window glass W.

Here, when the adhesive bead A is formed around the window glass W using the coating nozzle 2 having the above configuration, as shown in the right half of FIGS. 6A and 6B,
When the adhesive bead A is formed on the right edge of the window glass W, the opening edge 2a of the application nozzle 2 follows the surface Ws of the window glass W.

At this time, as is clear from FIG. 5, since the opening edges 2a, 2a sandwiching the notch 2A are close to the surface Ws of the window glass W, the adhesive extruded from the application nozzle 2 Since the bead A is supported by the notch 2A, the bead A is prevented from sliding down the surface Ws of the window glass W or falling down to the center of the window glass W beforehand. A is formed at an intended position following the edge portion We of the window glass W.

As shown in the left half of FIGS. 6A and 6B, the adhesive bead A is attached to the left edge of the window glass W.
Also, when forming, the adhesive bead A is formed at an intended position following the edge We of the window glass W because the opening edge 2a of the application nozzle 2 follows the surface Ws of the window glass W. Needless to say, the application nozzle 2 is particularly effective in a situation where the adhesive beads are formed on the left and right edges of the window glass W as described above.

Here, as a modified example of the coating nozzle 2 described above, as shown in the coating nozzle 3 shown in FIG. 7, the coating nozzle 2 is formed by inclining the opening edges 3a, 3a sandwiching the notch 3A, or As in the application nozzle 4 shown in FIG. 8, the opening edges 4a, 4a sandwiching the notch 4A can be formed by rising up in an R shape.

Further, as shown in the application nozzle 5 shown in FIG. 9, one opening edge 5a and the other opening edge 5a 'sandwiching the notch 5A are aligned with the window glass W and the molding M, respectively. It is also possible to provide a step. The configuration of the application nozzles 3, 4, and 5 described above is basically the same as the application nozzle 2 except that the shape of the opening edge is different, and thus the detailed description is omitted.

In the application nozzle 1, the opening edge is inclined forward and backward in the nozzle advancing direction.
Although the opening edge is inclined left and right in the direction of nozzle travel,
Depending on the shape of the window glass W as a work,
The opening edge may be inclined in a direction intermediate between the application nozzle 1 and the application nozzles 2 to 5.

Further, the coating nozzle in each of the above-described embodiments is constituted by a circular pipe having a circular cross section. Needless to say, pipe-shaped members having various cross-sectional shapes can be adopted.

The application nozzle according to the present invention can be used not only for applying a paste-type polyurethane adhesive but also for applying various adhesives and sealing materials to window glass. The application nozzle according to the present invention is not only applied to equipment for working on a window glass of an automobile, but is also extremely applicable to equipment for continuously applying various high-viscosity fluids to various work surfaces. It goes without saying that it is effectively applied.

[0036]

As described above in detail, the coating nozzle according to the present invention is formed such that the opening edge of the lower end opening is inclined with respect to the vertical axis in a manner following the inclination of the surface of the work. . According to the above configuration, since the opening edge of the lower end opening of the application nozzle can be brought close to the surface of the work, it is possible to form a bead of a high-viscosity fluid at a predetermined position of the work as the application nozzle advances. Thus, the application nozzle according to the present invention can reliably apply the high-viscosity fluid to the surface of the work.

[Brief description of the drawings]

1 (a), 1 (b) and 1 (c) are a rear view, a side view and a front view showing an application nozzle according to the present invention.

2 (a) and 2 (b) are cross-sectional views of a main part showing a state of forming an adhesive bead by a coating nozzle of the present invention and a conventional coating nozzle.

FIGS. 3A and 3B are a plan view and a cross-sectional view of a main part of a window glass, showing a state of forming an adhesive bead by a coating nozzle of the present invention.

FIGS. 4A and 4B are a rear view and a side view showing another embodiment of the application nozzle according to the present invention.

FIG. 5 is a cross-sectional view of a main part showing a state of forming an adhesive bead by a coating nozzle of the present invention.

FIGS. 6A and 6B are a plan view and a cross-sectional view of a main part of a window glass showing a state of formation of an adhesive bead by another application nozzle according to the present invention.

FIG. 7 is a rear view and a side view showing still another application nozzle according to the present invention.

FIG. 8 is a rear view and a side view showing still another application nozzle according to the present invention.

FIG. 9 is a cross-sectional view of a main part showing still another application nozzle according to the present invention.

FIG. 10 is an overall bird's-eye view showing the adhesive application equipment of the direct glazing equipment.

11 (a), (b) and (c) are a rear view, a side view and a front view showing a conventional application nozzle.

FIG. 12 is a perspective view of an essential part showing a state of forming an adhesive bead by a conventional application nozzle.

FIG. 13 is an essential part cross-sectional view showing how the window glass is attached to the body.

FIG. 14 is a cross-sectional view of a window glass showing a mode of forming an adhesive bead.

FIG. 15 is a perspective view of a main part showing an aspect of forming an adhesive bead by an adhesive discharge gun.

FIG. 16 is a plan view showing a mode of movement of the application nozzle with respect to the window glass.

FIGS. 17 (a) and (b) are cross-sectional views of relevant parts showing differences in the formation state of an adhesive bead based on the inclination of a window glass by a conventional coating nozzle.

FIG. 18 is a plan view of a main part of a window glass showing a positional shift of an adhesive bead generated in a conventional application nozzle.

FIG. 19 is a cross-sectional view of a main part of a window glass showing slippage of an adhesive bead generated in a conventional application nozzle.

[Explanation of symbols]

 1, 2, 3, 4, 5 ... coating nozzle, 1r, 2r, 3r, 4r, 5r ... lower end peripheral wall, 1o, 2o, 3o, 4o, 5o ... lower end opening, 1a, 2a, 3a, 4a, 5a ... opening Edges, 1A, 2A, 3A, 4A, 5A: Notch, W: Window glass (work).

Claims (2)

[Claims] 1. A workpiece having a pipe-like shape and extending vertically, a notch for forming a bead of a high-viscosity fluid in a lower end peripheral wall, and moving while feeding a high-viscosity fluid from a lower end opening. A coating nozzle for continuously applying a high-viscosity fluid to a surface, wherein an opening edge of a lower end opening is inclined with respect to a vertical axis in a manner following the inclination of the surface of the work. nozzle. 2. The application nozzle according to claim 1, wherein a window glass of an automobile is used as a work, and an adhesive as a high-viscosity fluid is applied to the window glass.