JPS5955364A - Hand spray gun - Google Patents

Abstract

PURPOSE:To obtain a hand spray gun which sprays a large amt. in a short time, by providing the 2nd nozzle communicating with a passage for pressure liquid or the like near the 1st nozzle communicating with passages for liquid and for air. CONSTITUTION:The forward ends of the 1st passage 27 for pressurized air and the 2nd passage 2 for liquid are communicated with the 1st nozzle 40, and a grip part 12 is opened and closed by an opening/closing mechanism. The 2nd nozzle 45 communicating with the front end of the 3rd passage 43 for pressure liquid, pressure gas, etc. is disposed and is opened or closed by the opening-closing mechanism for the 3rd passage 43. Two kinds of materials can be sprayed in a relatively large amt. and in a short time with one hand spray gun 2, whereby efficiency is improved.

Description

Detailed Description of the Invention The present invention is a hand spray gun suitable for applications that require a relatively large amount of force spraying in a short period of time, such as when spraying a mold release agent onto the inner surface of a die-casting mold or a forging mold. It is related to.

Conventionally, as shown in Fig. 1, a hand spray gun used for die-casting machine work, for example, has a double structure with a pipe 1 for pressurized air and a pipe 2 for mold release agent. A type with a release agent passage 3 and a pressurized air passage 4 on the outside is known. In FIGS. 1 and 2, 5 is a nozzle, 6 is a grip part, and 7.8 is a joint part connected to an air pump and a release agent tank (both not shown).

However, the above-mentioned conventional hand spray guns can only spray one type of liquid, so when spraying mold release agent and lubricant (or other liquids or gases) in die casting or casting, for example, the operator has to spray each time. 2m
The problem is that you have to alternate between different types of spray guns when working, which causes poor work efficiency.

In view of the above problems, the present invention aims to improve work efficiency, shorten the work cycle, and reduce worker fatigue by making it possible to spray two types of liquids or gases with one hand spray gun. The ends of the first passage for pressurized air and the second passage for liquid phase passing through the inside of the spray gun ib are communicated with the first nozzle, and the opening/closing mechanism built in the grip part opens and closes each of the passages. The first step is to
The tip of the third passage for pressurized liquid, pressurized gas, or a mixture thereof is communicated with the second nozzle arranged near the nozzle, and the third passage is opened and closed by the third passage opening/closing mechanism arranged near the opening/closing m groove. The feature is that the passage can be opened and closed.

FIG. 3 is a side view showing an example of a hand spray gun according to the present invention, FIG. 4 is a bottom view, FIG. The cross-sectional view, FIG. 7, is a cross-sectional view taken along the line ■-■ in FIG.

First, in FIG. 6, the discharge pipe 9 (part of the second passage) is
The aluminum pipe 11 (second
Aluminum tube 1 is inset and glued to the inner surface of the passage (part of the passage).
1 is screwed and held in a screw hole 13 in a spray gun grip portion 12 made of aluminum alloy. A tapered portion 16 of a liquid (for example, mold release agent) flow rate adjustment valve 15 faces the right end opening 14 of the aluminum pipe 11, and this adjustment valve 15 is connected to the grip portion 12.
The adjusting valve 15 is screwed into the female threaded part of the hole 17 in the grip part 12.
The opening degree of the opening portion 14 can be adjusted by turning it from the outside. 18 is an annular space between the hole F and the valve 15, and the opening/closing valve 20 (part of the opening/closing mechanism) is connected through the passage 19.
It communicates with an annular space 21 (FIG. 7) on the downstream side.

The on-off valve 20 fits into the hole 22 in the grip portion 12, and when the on-off lever 23 (FIG. 6) is pressed in the direction of arrow A against the elasticity of the spring 24, it moves in the direction of arrow B (FIG. 7). The space 21 and the spring chamber 25 are communicated with each other by sliding. Slightly pressurized liquid is constantly supplied to the spring chamber 25 via a rubber tube (not shown) connected to the joint portion 26.

Further, in FIG. 6, the discharge pipe 27 (a part of the first passage) is made of aluminum alloy, is screwed into the screw hole 28 of the grip 9 part 12, has a slightly larger inner diameter than the aluminum pipe 11, and has an annular space. 29.Aisle 30. and a rubber tube (see FIG. 7) that communicates with the spring chamber 33 via the annular space 31 (each part of the first passage) and the opening/closing valve 32 (part of the opening/closing mechanism) shown in FIG. It communicates with the pressurized air tank through the [not shown]. Note that 35 is a pipe ring, 36 and 37 are blind plugs,
38 (FIG. 6) is a support shaft of the lever 23, and 39 is a seal. Further, the first nozzle/l/40 is screwed onto a male threaded portion 41 at the tip of the discharge pipe 27, and has a discharge port 42.

Furthermore, in the hand spray gun according to the present invention, as shown in FIGS. 3 and 4, a discharge W43 (a part of the third passage) is arranged in parallel with the discharge pipe 27, and both are secured by a band 44. A second nozzle 4 is installed at the tip of the discharge pipe 43.
5 are screwed together in a posture such that the first nozzle is aligned with the first nozzle/l/40K and has substantially the same spraying direction.

On the other hand, as shown in FIG. 5, a joint part 47 is screwed together with joint parts 26 and 34 on the rear end surface of the grip part 12, and a passage (not shown) provided in the grip part 12 is provided. It communicates with the discharge pipe 43 via.

A joint part 47 and a discharge pipe 43 are provided at the upper part of the grip part 12.
A joint 46 (third passage opening/closing mechanism) is provided to open and close the passage in the grip portion 12 that communicates with , which communicates with the gas tank.

Next, the operation will be explained. Grasp the grip part 12 and open/close lever 2
3 in the direction of arrow A (FIG. 6), the air on-off valve 32 opens and pressurized air is ejected from the discharge pipe 27 (first stage). When the opening/closing lever 23 is further rotated in the direction A, the opening/closing valve 20 for the mold release agent opens l1ilF, the molding agent starts to come out from the discharge pipe 9, and the pressurized air from the discharge pipe 27 causes the mold release agent to be discharged by /z/L'40. The mold release agent will spray out (second stage). The first stage operation in which only pressurized air is ejected can remove dust, burrs, water droplets, etc. from the mold surface, and the second stage operation can spray a mold release agent. Furthermore, by connecting, for example, a pressurized lubricant tank to the joint portion 47, the lubricant can be sprayed with the same spray gun without changing the spray gun. Spraying of the lubricating oil is performed by operating the conc 46.

Conventional procedure performed in a certain die casting machine operation t))
According to a comparison with a hand spray gun, the work cycle can be reduced by 3 to 4 seconds, resulting in a reduction of 15 seconds per day.
If you work 00 times, the working time is 94500~
It was found that the time can be shortened by 6000 seconds. This means that productivity can be improved by 6.5 to 8.5%.

As explained above, the first passage of the pressurized air stream (discharge pipe 27
etc.) and the tip of the second passage (discharge/a9, etc.) for the liquid phase is communicated with the first nozzle 40, and the opening/closing 8 built in the grip portion 12 is connected to the first nozzle 40.
The M structure (opening/closing valves 20, 32, etc.) is used to open and close each of the above-mentioned passages, and pressurized liquid, pressurized gas, or The tips of the third passages (discharge pipe 43, etc.) for these mixtures are communicated, and the third passage is opened and closed by a third passage opening/closing mechanism (conc 46) disposed near the opening/closing m groove. This makes it possible to spray two types of liquids or gases with one hand spray gun, which has the advantage of shortening the work cycle, improving work efficiency, and reducing worker fatigue. .

In carrying out the present invention, the material passing through each passage does not rely on mold release agent, air, or lubricant, and other liquids, gases, or mixtures thereof that require spraying may be sprayed through each passage. can. Also, the opening/closing mechanism of the third passage is cock 4.
6, other common valves can be used.

[Brief explanation of the drawing]

Figure 21 and Figure 2 show the conventional 1m flat spray gun.
3 is a side view of a nod spray gun according to the present invention, FIG. 4 is a bottom view thereof, FIG. 5 is a view taken along arrow V-■ in FIG. 3, and FIG. -v+ sectional view, Figure 7 is the 6th
It is a sectional view taken along ■-■ of the figure. 9...Discharge pipe [part of second passage], 12...Spray gun grip part, 20.32
...Opening/closing valve (part of the opening/closing mechanism), 27...Discharge pipe (
part of the first passage], 40... first nozzle, 43...
Discharge pipe (part of third passage), 45...M2 nozzle, 4
6...Cook [opening/closing mechanism for third passageway] Patent applicant Hanano Shoji Co., Ltd.

Claims (1)

[Claims] The tips of the first passage for pressurized air and the second passage for the liquid layer passing through the spray gun grip part are communicated with the first nozzle, and the opening and closing of each passage is opened and closed by an opening/closing mechanism built in the grip part. At the same time, a second nozzle placed near the first nozzle
The tip of the third passage for pressurized liquid, pressurized gas, or dead metal objects is communicated with the nozzle, and the third passage is opened and closed by a third passage opening/closing mechanism disposed near the opening/closing mechanism. A hand spray gun with the following features.