JPH0796105B2 - Sealant coating device for panel edge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to anti-corrosion, sealing, and protection for an inner curved edge portion that forms a wheel opening line of a panel edge portion in a part of a fender of an automobile body. The present invention relates to a sealing material applying device for a panel edge portion that can be utilized as a device for applying a sealing material for the.

[Conventional technology and its problems]

The inner curved edge part that forms the wheel opening line of the panel in the fender part of the automobile body originally has a tendency that the coating film becomes thinner than other parts, so that due to collision of flying stones etc. during running The coating film is relatively easier to peel off than other parts, and the adhesion of salt of the antifreezing agent, etc., also causes rusting.

Therefore, the inner curved edge portion forming the above-mentioned wheel opening line is specially covered and protected by a sealing material, for example, a thermosetting rubber-based paste sealing material that can be simultaneously cured when the electrodeposition coating film is cured by heating. It is possible to do it.

As an application device for such a sealing material, a full-scale shokai 61-
There is one described in 167974. This conventional coating device
A nozzle provided with a forked portion at the tip is attached to the coating gun, and the coating gun is moved with the forked portion straddling the panel edge portion. Further, Japanese Utility Model Laid-Open No. 60-31371 and Japanese Patent Laid-Open No. 58-67376 describe a nozzle used for applying a sealing material or a hot melt resin to a general edge portion.

However, since the panel edge portion as described above is bent inward (toward the wheel house), it is difficult to move the nozzle at a constant speed while keeping the nozzle in the correct posture with respect to the panel edge portion. In addition, since the panel edge portion has a bulge portion formed with a hole for fixing the decorative molding material, the width of the inward projection may not be constant. Then, the sealing material could not be applied uniformly and efficiently to the panel edge portion.

[Means for solving problems]

In view of the above problems, the present invention provides a coating device suitable for coating a sealing material on a special panel edge portion as described above, and a technical means therefor is:
The operating body is provided with a sliding guide surface having a substantially L-shaped cross section that fits and abuts from the outside at the corner portion extending from the outer surface of the panel to the bottom surface of the inward bending edge portion. A nozzle for material coating is reciprocally mounted in the projecting direction of the inner curved edge portion, and a spring for urging the nozzle in the direction of abutting the end edge of the inner curved edge portion is provided. A pipe for supplying a sealing material is provided.

[Action]

With the nozzle retracted against the urging force of the spring, the sliding guide surface of the operating body is fitted and abutted from the outside to the protruding corner portion of the inner curved edge of the panel, and the nozzle is retracted. Is moved forward by the urging force of the spring and brought into contact with the edge of the edge portion. In this state, the sealing material is supplied to the nozzle through the pipe, and the operating body is moved manually or along the edge portion by the manipulator (industrial robot), so that the sealing material discharged from the nozzle is used. The inner curved edge can be coated.

At this time, the position of the nozzle with respect to the edge portion is determined by moving the operation body along the edge portion while pressing the operating body in the direction of the corner portion so that the sliding guide surface always contacts the outside of the corner portion of the panel. It is possible to surely apply the sealing material discharged from the nozzle to the edge portion.

Further, since the nozzle is urged in the direction in which it abuts against the edge portion against the urging force of the spring and can move backwards against the urging force, the inner curved edge portion has a large protrusion width. Even if there is a bulging portion, the nozzle moves along the edge portion while following the edge of the edge portion including the bulging portion, and the sealing material also works well on the bulging portion of the edge portion. Can be applied.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes an operating body having a substantially right-angled triangular side surface, which is made of a plastic material that slides well on a metal plate, and a grip portion 2 is formed along a hypotenuse thereof. The extending portion 3 is integrally provided so as to project obliquely downward from the middle position of the vertical side. A guide rail 4 is attached to the lower side of the extending portion 3 along the length direction of the extending portion 3,
A movable base 5 is supported on the guide rail 4 via a slide bearing so that it can slide only. A sealing material coating nozzle 6 is disposed adjacent to one side of the above-mentioned extending portion 3 and is connected to the movable table 5 via a bracket 7.

Reference numeral 8 is a guide rod parallel to the guide rail 4, and one end of which is fixed to the lower end of the vertical side of the operating body 1 in a state of penetrating the free end of the plate 9 attached to the movable table 5 so as to be relatively movable. And a washer 8a attached to the free end of the guide rod 8
A compression coil spring 10 is loosely fitted between the plate member 9 and the plate member 9. Reference numeral 11 denotes a substantially L-shaped sliding guide surface formed over the base upper side of the extending portion 3 and the vertical side of the operating body 1.

As shown in FIGS. 4 to 7, the nozzle 6 has a branch pipe portion 6a extending upward in a direction facing the slide guide surface 11.
Are continuously provided, and a recessed portion 12 is formed between the branch pipe portion 6a and the nozzle body tip pipe portion 6b. The U-shaped inner surface of the recessed portion 12 is provided with slit-shaped sealing material discharge ports 13a to 13c continuous to the U-shape.

Among the discharge ports 13a to 13c, on both side wall portions 14a and 14b forming the discharge port 13b located at the innermost end of the recessed portion 12 described above,
As shown in FIG. 6, the moving direction of the operating body 1 (direction of arrow X)
A step d is provided so that the side tube wall portion 14a projects. 1
Reference numeral 6 denotes a scraper, which is made of a rubber plate or the like having an appropriate hardness, and is provided with a contact plate 17 on the side opposite to the operation body moving direction (arrow X direction) side of the nozzle body tip tube portion 6b. It is installed.

As shown in FIGS. 1 to 3, a relay metal fitting 20 for connecting a main flexible tube 18 and a sub flexible tube 19 for supplying a sealing material is provided at an upper corner of the grip portion 2 of the operating body 1. It is fixed, and the free end of the sub flexible tube 19 is communicatively connected to the base portion of the nozzle 6 described above. Reference numeral 21 denotes a push button switch for controlling on / off of the pump for pumping the sealing material, which is arranged at a position where it can be operated with a fingertip while holding the grip portion 2 of the operating body 1. In the illustrated example, the push button switch 21 is provided at a position where it can be operated by the index finger, but it can be arranged at a position where it can be operated by the thumb.

As shown in FIG. 8, a main flexible tube 18 for supplying a sealing material is provided.
Is connected to the discharge port of a pump 24 that pumps the sealing material 23 in the tank 22, and the push button switch 21 is an electric power for on / off control of the pump 24 via wiring arranged along the main flexible tube 18. Although it is connected to the circuit, the main flexible tube 18 becomes long and heavy, so that the portion of the main flexible tube 18 near the operation body 1 (or the operation body 1) is suspended by the suspension rope 25a of the balancer 25 as shown in the figure. Can be hung.

As shown in FIG. 9, the wheel opening line 27 of the panel in the fender portion 26 of the automobile body is joined to the outer panel 28 and the inner panel 29 by overlapping as shown in FIGS. 4 and 5. The inner curved edge portion 30 is formed. Then, the sliding guide surface 11 of the operating body 1 has the outer panel 28.
The angle is determined so that the outer corner 28 a (the surface of the fender portion 26) to the bottom corner 30 a of the inwardly curved edge portion 30 is externally fitted and abutted.

In this case, the sliding guide surface 11 is formed in the projected corner portion 31 at a slightly wider angle (for example, about 99 degrees) than the angle between the outer surface 28a of the outer panel 28 and the bottom surface 30a of the inner curved edge portion 30. The lower side surface 11a of the sliding guide surface 11 (a surface which is in sliding contact with the bottom surface 30a of the inwardly curved edge portion 30) so that the operating body 1 can be smoothly moved along the inwardly curved edge portion 30 while being in contact with each other. As shown in FIGS. 3 and 7, it is desirable to form a convex curved surface having a radius of curvature slightly smaller than the radius of curvature of the wheel opening line 27.

The automobile body to be coated with the sealing material is the 8th
As shown in the figure, it is suspended on the conveyor line so that the wheel opening line 27 is located near the height of the operator's head. The operator grips the grip portion 2 of the operating body 1 and moves the nozzle 6 backward together with the movable table 5 against the biasing force of the spring 10 to widen the distance between the sliding guide surface 11 and the nozzle 6. In this state, the sliding guide surface 11 is fitted and brought into contact with the projected corner portion 31 at one end (left end) of the wheel opening line 27 from the outside.

Then, the nozzle 6 is moved forward together with the movable table 5 by the urging force of the spring 10, and the concave portion 12 at the tip thereof is fitted into the inwardly curved edge portion 30 from the inside as shown in FIGS. 4 and 8.

At this time, the inwardly curved edge portion 30 is located substantially in the center between the upper and lower facing surfaces of the nozzle recessed portion 12, and the nozzle recessed portion
The tube wall portion 14a on the side projecting at the rear end of 12 abuts on the inner edge of the inwardly curved edge portion 30 by the biasing force of the spring 10.
In this state, the push button switch 21 is operated to operate the pump 24 so that the sealing material 23 in the tank 22 passes through the main flexible tube 18, the relay fitting 20, and the sub flexible tube 19 and the nozzle 6 The sealing material 23 is pumped into the nozzle
It will flow out into the recessed part 12 through the slit-shaped discharge ports 13a to 13c that are continuous on the inner periphery of 12.

At this time, the discharge ports 13a, 13b, 13c can be determined from the relationship of the sealing material outflow path to the discharge ports 13a to 13c in the nozzle 6.
Since the discharge amount of the sealing material tends to increase in the order of, the slit widths of the discharge ports 13a to 13c are configured to become narrower in the order of the discharge ports 13a, 13b, 13c as shown in FIGS. 6 and 7. Then, it is preferable that the discharge amounts of the sealing material from the respective discharge ports 13a to 13c be substantially equal.

While the sealing material 23 is being discharged into the recessed portion 12 of the nozzle 6 as described above, the operating body 1 is manually moved by the operator along the inner curved edge portion 30 in the arrow X direction (rightward direction) in FIG. ) To. At this time, the sliding guide surface 11 of the operating body 1 is exposed
The arrow Y shown in FIG. 4 and FIG.
By pushing the operating body 1 in a desired direction and operating it slightly,
The positional relationship between the inwardly curved edge portion 30 and the nozzle recessed portion 12 that fits the edge portion 30 can be maintained as expected.

Thus, as shown in FIG. 5, the gap between the inner surface of the nozzle concave portion 12 and the inner curved edge portion 30, and the step between the pipe wall portions 14a and 14b at the inner end of the nozzle concave portion 12 are formed. Due to the presence of d, the sealing material 23 discharged into the nozzle recessed portion 12 should be applied so as to wrap the inner curved edge portion 30 with the required thickness from the three sides of the upper and lower sides and the edge thereof as the operation body 1 moves. become. Also, the sealing material 23 applied to the bottom surface 30a of the inwardly curved edge portion 30 has its end edge leveled by the scraper 16, and the sealing material 23 is applied between the bottom surface 30a of the inwardly curved edge portion 30 and the applied sealing material 23. Does not cause unsightly steps.

In addition, as shown by the phantom line in FIG.
Even if there is a bulge portion 30b in 30, the nozzle 6 can move backward together with the movable table 5 against the biasing force of the spring 10.
The nozzle 6, which is in contact with the end edge of the inwardly curved edge portion 30 via the pipe wall portion 14a, has a bulge portion 30 while moving forward and backward.
By moving along the edge of b, the sealing material 23 can also be applied as expected at this bulge 30b.

In order to allow the nozzle 6 to move smoothly along the edge of the inner curved edge portion 30 including the bulge portion 30b as described above, as shown in FIG. It is desirable that the outer surface on the operation body moving direction side (the outer surface of the tube wall portion 14a) is formed by a curved surface so that the nozzle 6 is not caught by the bulge portion 30b or the like.

Due to the presence of the scraper 16, the edge of the sealing material 23 applied to the bottom surface 30a of the inward curved edge portion 30 can be beautifully finished.
The sealing material 23 scraped off by 16 may drip from the tip of the nozzle body tip tube portion 6b.

This can be prevented by suppressing the amount of the sealing material 23 discharged from the discharge port 13c of the nozzle body tip tube portion 6b. However, as shown by phantom lines in FIGS. 5 and 6, the nozzle body tip tube portion is shown. Providing the cover plate 32 that shields the gap between the tip of the 6b and the bottom surface 30a of the inwardly curved edge portion 30 is effective in eliminating the above-mentioned inconvenience.
The cover plate 32 can be formed integrally with the scraper 16.

It is also possible to directly connect the main flexible tube 18 to the nozzle 6, but especially when the sub flexible tube 19 is used together as in the embodiment, the weight of the main flexible tube 18 causes the smoothness of the nozzle 6. Movement is not hindered. Therefore, a spring 10 for urging the nozzle 6 is used that has a relatively weak urging force to reduce the friction of the sliding contact portion between the nozzle 6 and the inwardly curved edge portion 30 to smoothly move the nozzle 6 forward and backward. In addition to being able to perform the movement, the movement of the operating body 1 itself can be performed lightly.

The nozzle 6 for applying the sealing material is not limited to the structure of the above-described embodiment. Also, the scraper 16 is not essential to the present invention.

〔The invention's effect〕

According to the present invention, an inwardly curved edge portion of a panel forming a wheel opening line in a fender portion of an automobile body, that is, a portion that is bent toward the inside of a wheel house and has a bulge portion partially protrudes. Sealing material for rust prevention, sealing and protection can be applied efficiently and surely to the special panel edge where the width is not constant.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a side view of a coating apparatus, Fig. 2 is a plan view of the coating apparatus, Fig. 3 is a rear view of the coating apparatus, and Figs. 6 is a vertical sectional side view of the main part, FIG. 7 is a vertical sectional front view of the main part, FIG. 8 is a schematic side view showing how to use the coating apparatus, and FIG. It is a side view explaining a wheel opening line in a fender part of a car body. DESCRIPTION OF SYMBOLS 1 ... Operating body, 2 ... Grip part, 5 ... Movable stand, 6 ... Nozzle, 10
… Spring, 11… Sliding guide surface, 12… Nozzle recessed part, 13
a to 13c ... Discharge port, 18 ... Main flexible pipe (piping), 19 ... Sub flexible pipe (piping), 23 ... Sealing material, 27 ... Wheel opening line, 28 ... Outer panel, 29 ... Inner panel, 30 ... Inner curved edge part, 31… Outer corner part.

Front page continuation (72) Inventor Takeshi Nagata 7-1 Akita-cho, Takatsuki-shi, Osaka Sunstar Giken Co., Ltd. (72) Inventor Haruji Shibata, Toyota-cho, Aichi Prefecture Toyota Automobile Co., Ltd.

Claims (1)

[Claims] 1. An operating body is provided with a sliding guide surface having a substantially L-shaped cross section, which is fitted and abutted from the outside to an outer corner portion extending from the outer surface of the panel to the bottom surface of the inwardly curved edge portion. A nozzle for applying a sealing material to the curved edge portion is reciprocally mounted in the projecting direction of the inner curved edge portion, and a spring for urging the nozzle in a direction to abut the end edge of the inner curved edge portion is provided. A sealing material applying device for a panel edge, which is provided with a pipe for supplying a sealing material to the nozzle.