JPH0213108Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is applied to the overlapping parts of plate materials such as automobile bodies.
This invention relates to a discharge gun that discharges and applies a high-viscosity fluid such as a sealer or adhesive for waterproofing, rust prevention, dustproofing, or adhesion of plate materials.

In automobiles and the like, for example, a high viscosity fluid 2 such as a sealer is applied to a folded portion 1a of a plate material 1 as shown in FIG. In this case, the coating is generally carried out using a gun that has a nozzle for discharging a high viscosity fluid such as a sealer (hereinafter referred to as a sealer discharge nozzle); The adhesion of the sealer is not sufficient, and the surface of the applied sealer is not smooth and wrinkles occur, resulting in a poor appearance. After applying the sealer, the sealer is pressed and shaped using a brush or a spatula, but this is time-consuming and relies on the human sense of touch, so the shaping tends to be uneven, and during the work. There were problems such as sealer adhering to unnecessary parts.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a discharge gun that is equipped with a means for applying a sealer, and also for pressing and shaping the applied sealer.

That is, the discharge gun of the present invention uses compressed air to press and shape the sealer, and is equipped with a compressed air jet nozzle in addition to the sealer discharge nozzle. The sealer discharge nozzle has a smaller diameter than the compressed air jet nozzle,
The sealer discharge nozzle is disposed inside the compressed air jet nozzle and has a double pipe structure, and within the compressed air jet nozzle, the sealer discharge nozzle is unevenly distributed in the direction of progress of the coating operation, and at least the lower part of the outer periphery of the tip is unevenly distributed within the compressed air jet nozzle. It is brought into contact with the inner surface of the compressed air jet nozzle.

However, in the discharge gun of the present invention, since the nozzle part has the above structure, when the nozzle part is moved and the sealer is continuously applied, compressed air is ejected from the direction surrounding the sealer, pressing the sealer, Plastic surgery is done.

Hereinafter, details of the present invention will be explained with reference to embodiments shown in FIGS. 2 to 7.

In the embodiment shown in FIGS. 2 and 3, the gun body 6 has a sealer supply passage 7 and a compressed air supply passage 8 extending therethrough. A sealer supply hose 9 communicating with a sealer supply source S is connected to one opening of the sealer supply passage 7, and a compressed air supply hose 10 communicating with a compressed air supply source C is connected to the compressed air supply passage 8.

Opening/closing valves 11 and 12 are installed in the sealer supply passage 7 and the compressed air supply passage 8, respectively. On the other hand, one end of a lever 13 is rotatably supported on the gun body 6, and the lever 13 is supported by the arrow A.
By pulling in the direction, the stepped portion 11a of the valve shaft of the valve 11 and the valve shaft end 12a of the valve 12
is engaged with the lever 13, and the sealer supply passage 7 and the compressed air supply passage 8 are opened.

The other openings of the sealer supply passage 7 and the compressed air supply passage 8 are connected to the base ends of the sealer supply pipe 3 and the compressed air supply pipe 4, respectively. The tip of the sealer supply pipe 3 has a small diameter and forms a sealer discharge nozzle 3a. On the other hand, the tip of the compressed air supply pipe 4 is connected to a circular housing 5.
It is connected to an eccentric position on one end face of the . The sealer supply pipe 3 passes through the axis of the housing 5. One end of a compressed air jetting nozzle 4a that has a larger diameter than the sealer discharge nozzle 3a and surrounds the sealer discharge nozzle 3a is connected to the other end surface of the housing 5, and a jet nozzle passage is formed by a gap between the housing 5 and the sealer discharge nozzle 3a. ing. In particular, the tip of the sealer discharge nozzle 3a is connected to the compressed air jet nozzle 4 as shown in FIG.
It is eccentric in the downward direction with respect to the tip of a, and the lower part of its outer periphery is in contact with the inner surface of the compressed air jet nozzle 4a.

The nozzle end of the double structure thus formed is opposed to the plate material 1 having the folded portion at an inclination angle of approximately 45°, and the sealer coating operation is performed while moving in the direction of arrow B. The distal end of the sealer discharge nozzle 3a is offset from the compressed air supply nozzle 4a in the nozzle advancing direction during operation.

In the gun having the above structure, the lever 13
The sealer application work is performed by moving the nozzle part in the direction of arrow B along the overlapping part of the plate materials while supplying the sealer and compressed air by pulling .
In this case, the opening of the compressed air jet nozzle 4a is formed so as to surround the rear side of the sealer discharge nozzle 3a, so that as soon as the sealer is applied, compressed air is jetted from the direction surrounding it. Therefore, the applied sealer is shaped into a uniform width by the compressed air without sagging in the width direction or causing wrinkles on the surface, and the pressing force of the compressed air allows the sealer to adhere well to the plate material. Further, since compressed air is supplied to the applied sealer so as to surround it, the sealer does not lose its shape, so the discharge pressure of the sealer can be increased, and the speed of the application operation can therefore be improved.

In addition to the embodiments described above, when applying sealer 2 to the joint between plate material 1 and plate material 1' as shown in FIG. 6, compressed air is ejected from the nozzle of the discharge gun as shown in FIG. It is preferable to use one in which the tip of the nozzle 4a is cut off by a predetermined amount to protrude the sealer discharge nozzle 3a, and the tip of the sealer discharge nozzle 3a is notched into a pointed shape to widen the sealer discharge width. In addition, when joining the plate material 1' to the inside of the flange portion bent at right angles of the plate material 1 as shown in FIG. 7 and applying sealer 2 to the corner part, the discharge It is preferable to use a gun with the tip of the compressed air jet nozzle 4a cut off.

As explained above, the discharge gun of the present invention can simultaneously apply sealer, press the applied sealer, and shape the applied sealer, eliminating the need for manual shaping as in the past, and greatly improving work efficiency. In addition, with the discharge gun of the present invention, compressed air is blown to surround the sealer immediately after it is applied, so there is no dripping of the applied sealer, which increases the amount of sealer discharged and speeds up the application. be able to.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the overlapping portion of plate materials coated with sealer, Fig. 2 is a partially cross-sectional side view of an embodiment of the discharge gun of the present invention, and Fig. 3 is taken along the - line in Fig. 2. A cross-sectional view, FIG. 4, and FIG. 5 are a perspective view showing another example of the nozzle tip shape of the discharge gun, and FIG.
FIG. 7 and FIG. 7 are perspective views showing another example of the sealer application site. DESCRIPTION OF SYMBOLS 1... Plate material, 1a... Overlapping part, 2... Sealer, 3... Sealer supply passage, 3a... Sealer discharge nozzle, 4... Compressed air supply passage, 4a... Compressed air jetting nozzle, S... Sealer supply source, C... compressed air supply source.

Claims (1)

[Scope of utility model registration request] A high viscosity fluid discharge nozzle connected to a high viscosity fluid source such as a sealer, and a compressed air jet nozzle connected to a compressed air supply source and having a larger diameter than the high viscosity fluid discharge nozzle. A fluid discharge nozzle is disposed within a compressed air jet nozzle, and at least the tips of these nozzles are eccentric to each other so that a lower portion of the outer periphery of the high viscosity fluid discharge nozzle is brought into contact with an inner peripheral surface of the compressed air jet nozzle. A discharge gun for high viscosity fluids such as sealer.