JPH0446829Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is an automatic sprayer that can substantially cover an automatic spray gun while exposing the air cap, and can prevent paint from adhering to the gun body of the automatic spray gun. Regarding gun covers.

[Background technology]

In recent years, as industrial robots have become more sophisticated, spraying operations such as painting operations are becoming more automated, and remote-controllable automatic spray guns are usually used for such automatic painting operations.

Note that such an automatic spray gun generally has a gun body A as shown in FIGS. 14 and 15, for example.
An air cap B for spraying the paint is attached to the front end, and a needle valve D for opening and closing the opening of the paint path C provided in the air cap B is attached to the gun body A in a notch on the lower surface of the gun base E. It is slidably inserted while being exposed to F. The needle valve D is slid by a piston G that is moved back and forth by operating air, and the sliding stroke is adjusted by screwing back and forth a paint adjuster I provided at the rear end of the gun base E. Further, at the upper part of the rear end of the gun body A, a pattern adjuster K is screwed into an air passage J that passes through the opening of the air cap B, supplies discharge air from the air cap B, and is opened and closed by the piston G. be done. Further, the needle valve D is sealed by connecting fittings H1 and H2 provided before and after the notch F, thereby preventing leakage of the paint and the supplied air from the paint path C and the air flow path J.

On the other hand, since the automatic painting operation is carried out for a long time in a shielded painting room, the automatic spray gun is placed in an extremely bad environment filled with paint scattered and floating due to spraying. Therefore, if scattered or floating paint adheres to the area around the automatic spray gun, especially to the exposed needle valve D, the needle valve D will wear out due to the sliding action.
As a result, leakage of the coating material and the supplied air occurs between the fittings H1 and H2. moreover,
If the adhered paint is left unattended, the hardening of the paint will not only cause the needle valve D to be fixed to the connecting fittings H1 and H2, but also to the threaded portions I1 and K1 of the adjusters I and K. This also causes problems such as making the sliding movement of the needle valve D and various adjustment operations difficult.

Therefore, in order to solve the above-mentioned problems, in the painting operation, cleaning operation to wash off the adhering coating material is usually performed frequently. However, since the paint adheres to the entire periphery of the automatic spray gun, cleaning the gun requires time and effort.
In some cases, if the paint penetrates into the details of the threaded portions I1, K1, etc., it becomes necessary to disassemble and reassemble the gun body A, resulting in poor workability.

Furthermore, during the cleaning operation, the painting operation is temporarily interrupted and the automatic spray gun is replaced, which has the disadvantage of lowering the efficiency of the painting operation.

In Utility Model Application Publication No. 60-91268, a protective cover was devised in which a tube-shaped cover body was placed over the exposed needle valve part to prevent the adhesion of paint, but this protective cover only applied to the needle valve. However, there was a problem in that the area around the automatic spray gun could not be protected and therefore cleaning work that required disassembly and reassembly could not be improved.

[Purpose of invention]

The present invention is based on the use of a cover base that can substantially cover the automatic spray gun, and is easy to install and can substantially protect the area around the automatic spray gun from scattering and floating paint, thereby solving the above-mentioned problems. The purpose is to provide covers for spray guns.

[Disclosure of invention]

An embodiment of the present invention will be described below based on the drawings.

In the figure, the automatic spray gun cover 1 is
a cover base 7 having an open edge 5 for attaching a joining member 3 that connects the facing pieces 2a, 2b to each other, into which an automatic spray gun 6 can be inserted, and which can substantially cover the automatic spray gun 6 by closing the open edge 5; A through hole 8 exposing the air cap B is provided at the top.

In this example, the automatic spray gun cover 1 is a conventional automatic spray gun 6 shown in FIGS.
It is formed so that it can be attached to.

The automatic spray gun 6 is provided with an air passage 10 and a paint passage C in an air cap B attached to the front end of the gun body A, the air passage 10 is connected to air discharge ports 11A and 11B, and the paint passage C is connected to the paint passage C. The discharge port 12 is opened.

The gun body A is provided with an air chamber 13 that holds a piston G through which the rear end of the needle valve D passes through a notch F on the lower surface of the gun base E, and an on-off valve part 15 that engages with the front end of the piston G. The air chamber 13 is communicated with a guide hole 17 leading from one air nipple 16A on the lower surface of the gun base, and by feeding operating air into the guide hole 17, the piston G is moved backward.

Therefore, by retracting, the piston G opens the air passage J for supplying the blowing air, which runs from the other air nipple 16B through the on-off valve section 15 and to the front surface of the gun base E.

Note that the piston G pulls the needle valve D with a delay because there is a gap between the piston G and the retaining ring 19 at the rear end of the needle valve D.

Furthermore, in this example, fittings H1 and H2 are attached to the front and rear of the notch F, into which the needle valve D is loosely fitted and which is sealed with a sealing material. A paint adjuster I is provided which can move forward and backward by adjusting the sliding stroke width of the needle valve D.

Further, the air flow path J is provided at the upper rear end of the gun base E.
A pattern adjuster K is provided for adjusting the amount of air blown through the robot by screwing it forward and backward, and an insertion hole 22 is provided on the side surface of the bulge 20 on the upper surface of the pattern adjuster, through which a mounting shaft 21 extending from the arm end of the robot is inserted. A screw piece 23 is provided on the front surface of the bulged portion 20 to temporarily fix the mounting shaft 21 to be inserted therethrough.

A threaded portion 21A is formed at the tip of the mounting shaft 21, and a pressing piece 23A made of nylon or the like is provided at the tip of the threaded piece 23, which can press the threaded portion 21A without deforming it.

Further, a guide hole 26 extending from a paint nipple 25 on the lower front surface of the gun base E communicates with the paint path C.

Therefore, the automatic spray gun 6 has an air nipple 1
The piston G and needle valve D can be moved forward and backward by operating air fed from the air cap 6A, and the spraying of paint from the air cap B can be controlled remotely.

In this example, the automatic spray gun cover 1 includes a cover base 7 formed of a sheet-like material such as vinyl or nylon, and a through hole 8 provided therein.

As shown in FIGS. 1 to 3, the cover base 7 has
A pair of substantially rectangular sheet pieces 30, 30 are arranged facing each other, and their upper and lower edges 30a, 30b are bonded together by heat welding or the like to form a substantially bag-like shape, and the rear edge 30c of the opposing sheet pieces 30, 30 ,30
An adhesive tape 3A is attached to one of the trailing edges 30c, 30c to connect the trailing edges 30c, 30c to each other.

Therefore, the cover base 7 has two opposing sheet pieces 3
The rear ends 30c and 30c of 0 and 30 form opposing pieces 2a and 2b, and the opposing pieces 2
A joining member 3 for joining a and 2b to each other, that is, in this example, an open edge 5 to which an adhesive tape 3A is attached is formed at the rear edge. In this way, the open edge 5 is
Opposing pieces 2a and 2b to which the joining member 3 is attached
The gun body A can be inserted through the open edge 5 by being open before joining by the joining member 3. The cover base 7 also has inclined edges 3 attached to the front of the upper and lower edges 30a and 30b, respectively, and inclined along the tip 31 of the gun base E.
0a1 and 30b1 are provided, and the upper edge 30
a. A notch 32 for inserting the screw piece 23 is formed between the inclined edges 30a1, and a notch 33 for inserting the paint nipple 25 in front of the inclined edge 30b1. Further, the cover base body 7 is provided with positioning holes 35, 35 which are opposed to the insertion hole 22 and which can prevent the cover base body 7 and the automatic spray gun 6 from being misaligned by inserting the mounting shaft 21 therethrough.
Further, on the front edge 30d of the cover base 7, the front end of the inclined edge 30a1 and a bonding part 36 between the front end of the notch 33 are provided.
A through hole 8 for exposing the air cap B is provided between the
is formed.

[Effect]

As shown in FIG. 4, the automatic spray gun cover 1 allows the gun body A from which the air cap B has been removed to be inserted into the automatic spray gun cover 1 through its open edge 5.

During the insertion, the screw piece 23 and the paint nipple 25 of the gun body A protrude from the notches 32 and 33, and the gun body A protrudes from the through hole 8.
An air hose 3 has an air cap B screwed onto its tip and is further attached to the air nipples 16A and 16B.
9A and 39B are enclosed, and the opposing pieces 2a and 2b are adhered with adhesive tape 3A, and the open edge 5 is closed.

Further, the mounting shaft 21 to which one nut piece 41 and washer 42 have been temporarily attached in advance is inserted into the insertion hole 22 of the automatic spray gun 6 via the positioning holes 35, 35, and then the screw piece 23 is used to insert the mounting shaft 21 into the automatic spray gun 6. 6 is temporarily fixed to the mounting shaft 21.

Further, the automatic spray gun 6 has the other nut piece 41 attached to the tip of the mounting shaft 21, and the washer 4.
2, and the attachment of the robot to the automatic spray gun 6 and the positioning of the automatic spray gun 6 and the automatic spray gun cover 1 are performed. A paint supply hose 43 is attached to the paint nipple 25 after the gun body A is inserted into the automatic spray gun cover 1.

Therefore, the automatic spray gun cover 1 can substantially cover the automatic spray gun 6 while exposing the air cap B, as shown in FIG.

As a result, the area around the automatic spray gun 6 can be substantially covered, reducing the coating area and reducing the needle valve D.
It is also possible to prevent the paint from adhering to or entering the paint adjuster I and the pattern adjuster K.

Further, FIGS. 6 to 8 illustrate other embodiments of the present invention.

In this example, the automatic spray gun cover 1 includes rear edges 30c, 30c and lower edges 30 of sheet pieces 30, 30.
An adhesive tape 3A is attached to one of the inclined edges 30b1 and 30b1, and the trailing edge 30c, the lower edge 30b, and the inclined edge 30b1 form a wide open edge 5 with a continuous opening.

Therefore, since the automatic spray gun cover 1 has a wide opening at the open edge 5, the automatic spray gun 6 can be easily inserted from above without removing the air cap B from the gun body A in advance. Improved ease of installation.

Further, FIGS. 10 and 11 illustrate still another embodiment of the present invention.

In this example, the automatic spray gun cover 1 includes:
For example, it is provided with a shell-shaped cover base 7 made of thin film polyethylene or the like formed by blow molding or the like, and is shown in FIGS.
As shown in Figure b, automatic spray guns 6a, 6 are provided with a rectangular gun base E1 housing a needle valve therein.
It is formed as if it were attached to b.

The automatic spray gun 6a is a fully automatic spray gun that has air nipples 16Aa, 16Ba on the lower surface of the base E1 and a paint nipple 25a on one side, a pattern adjuster K on the other side, and a paint adjuster I on the back side. Gun, also automatic spray gun 6
b is a semi-automatic spray gun having a paint nipple 25b and an air nipple 16Bb protruding from the lower surface of the base E1, a pattern adjuster K on one side, and a paint adjuster I on the back.

Note that the automatic spray guns 6a and 6b have a base E.
A holding plate 45 for mounting the mounting shaft 21 extending from the robot is mounted on the top surface of the robot 1 via a nut fitting.

In this example, the cover 1 for an automatic spray gun includes a cover base 7 consisting of a pair of cover base pieces 7A and 7B that are substantially symmetrical, and has a through hole 8 exposing an air cap B on the front surface of the cover base 7. It is set up.

The cover base piece 7A is connected to the rectangular gun base E1.
A container portion 46A is formed along the circumferential surface of the gun body E1 and accommodates the gun base E1 therein, and a container portion 47A is formed smaller than the container portion 46A and accommodates the paint adjuster I therein. The container portions 46A, 47
A step portion 50 is formed between B.

Further, on the upper surface of the container portion 46A, there is a notch hole 51A through which the nut fitting for mounting the holding plate 45 is inserted, and on the lower surface, an air nipple 16Ba or a paint nipple 2 is provided.
A cutout hole 52A for inserting the 5b is formed in a substantially semicircular arc shape, and a split groove 53 that can be cut is formed on the side surface.
By cutting out the groove 53, a cutout 55 through which the paint nipple 25a of the automatic spray gun 6a is inserted is linked to the cutout hole 51A.

Furthermore, an air cap B is provided on the front surface of the container portion 46A.
A through-hole piece 8A for exposure is bored in a semicircular arc. Note that the cover base piece 7A is an automatic spray gun 6a, 6b.
It has a width dimension that accommodates approximately half of the width, and a connecting surface portion 56A that projects outward is formed on the upper and lower edges and the rear edge.

The cover base piece 7B is composed of container parts 46B and 47B that are substantially symmetrical to the cover base 7A, and a bulge 57 for accommodating the pattern adjustment tool K is formed on the side surface of the container part 46B. Further, the container portion 46B has the cutout holes 51A, 52A and the through-hole piece 8A.
Notch holes 51B and 52B facing each other and through-hole piece 8
A bonding surface portion 56B facing the bonding surface portion 56A is formed on the upper and lower edges and the rear edge of the cover base body 7B. Furthermore, protrusions 60, 60 are provided on the top and bottom of the through-hole piece 8b, protruding forward by the thickness of the cover base piece 7A and extending inward, so that the abutting portions on the front surfaces of the cover base pieces 7A, 7B are overlapped and protected. sell. Note that the coupling surface portions 56A, 56B
So-called surface fasteners 59A and 59B are attached to the connecting surface portions 56 and 59B.
The pieces 2a and 2b facing each other are provided by A and 56B, and the open edges 5, which form the joining member 3 by hook-and-loop fasteners 59A and 59B, are provided at the upper and lower edges and at the rear edge. The automatic spray gun cover 1 also includes a through-hole piece 8a,
While exposing the air cap B from the through hole 8 consisting of 8b, an automatic spray gun 6a or 6b is installed inside.
can be inserted, and the open edge 5
can be closed, substantially covering the automatic spray gun 6a or 6b. In this example, the automatic spray gun cover 1 is formed so as to be in surface contact with the front and rear surfaces of the gun base E1 between the front surfaces of the containers 46A and 46B and the stepped portion 50, and the automatic spray gun cover 1 is It is possible to prevent the automatic spray gun 6a or 6b from shifting back and forth.

Therefore, in this example, automatic spray gun cover 1
In advance, install air cap B, paint supply hose 43A,
and air hoses 39A, 39B are attached, and can be attached to the automatic spray gun 6a or 6b fixed to the attachment shaft 21 extending from the robot, further improving the attachability, and connecting member 3 with hook-and-loop fasteners 59A, 59B. This also makes it possible to open and close the open edge 5, for example for adjusting the adjusters I and K.

Note that the automatic spray gun cover 1 can be made of paper, cloth, etc. in addition to the above-mentioned synthetic resins such as nylon, vinyl, and polyethylene, as long as it is in the form of a sheet, and the joining member 3 can be made of, in addition to the above-mentioned adhesive tape 3A, So-called fasteners, such as surface fasteners, fasteners that connect by pressing with fingers, and fasteners that have a slide piece and connect by moving the slide piece;
and buttons can also be used, and when fasteners, buttons, etc. are used, the open edge 5 can be opened and closed freely, so that the automatic spray gun cover 1
can be reused by washing.

Another protective cover 61 for the automatic spray gun 6 is also disclosed in FIG. The protective cover 61 covers the air cap B and is particularly effective for storing the automatic spray gun 6. By cutting off the tip, that is, the covering portion of the air cap B, the automatic spray gun cover of the present invention can be formed. It can be used as 1.

[Effect of idea]

As mentioned above, the automatic spray gun cover of the present invention has an open edge to which a joining member is attached and a cover base made of a sheet-like body.
In addition to making it easy to install, it can also cover most of the automatic spray gun, reducing the area on which paint adheres.
Washing work can be simplified. In addition, by substantially covering the automatic spray gun, the needle valve and various regulators exposed outside the gun can be protected from scattering and floating paint, extending the operating time of the automatic spray gun and improving painting work efficiency. sell. Furthermore, by protecting the needle valve and each adjustment tool, many effects can be achieved, such as eliminating disassembly and reassembly work during cleaning work.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is an XX end view showing the open edge thereof, Figure 3 is a Y-Y end view of the cover base, and Figure 4 is the present invention. FIG. 5 is an exploded perspective view showing the installed state, FIG. 5 is a perspective view showing the installed state, and FIG. 6 is a front view showing another embodiment of the present invention. Fig. 7 is a Z-Z end view of the automatic spray gun, Fig. 8 is a perspective view showing its installation state, Fig. 9 is a perspective view showing the protective cover of the automatic spray gun, and Fig. 1 is a perspective view showing the protective cover of the automatic spray gun.
Figure 0 is a perspective view showing still another embodiment of the present invention;
FIG. 11 is a perspective view showing the installed state, FIGS. 12 a to b are front sectional views and side views, and FIG. 13 a.
~b is a front sectional view and a side view showing how it is attached to another automatic spray gun. 14 and 15 are a sectional view and a side view of an automatic spray gun showing the prior art. 2a, 2b... opposing pieces, 3... adhesive tape, 5... open edge, 6... automatic spray gun, 7
...Cover base, 8...Through hole.

Claims (1)

[Scope of utility model registration request] An automatic spray gun 6 can be inserted into the interior through the open edge 5 consisting of the facing pieces 2a and 2b, and a joining member 3 is attached in advance to the facing pieces 2a and 2b, and the open edge is closed by this joining member 3. A cover for an automatic spray gun, comprising a cover base 7 made of a sheet-like body that can substantially cover the automatic spray gun 6, and a through hole 8 for exposing the air cap of the automatic spray gun.