JPH0446828Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a paint cup for a spray gun that reduces the amount of paint remaining inside and saves paint, and is equipped with a filter for filtering the paint at the suction port. .

[Background technology]

Generally, the paint cups of suction type spray guns often have a fixed suction pipe that sucks up the paint inside, and as the amount of paint in the container decreases, the suction port of the suction pipe is exposed to the paint surface. , which caused poor suction. In addition, when spraying is performed at an inclination in the vertical direction, etc., the paint moves downwards in the container along the inclination, so the inlet port is particularly likely to be exposed, and the paint spray becomes intermittent, resulting in uneven coating, etc. Not only was this a cause of problems, but the remaining paint at the end of spraying was wasted. Therefore, when using it in a tilted state,
In order to avoid wasting the residual paint, it is necessary to change the direction of the suction pipe according to the inclination, resulting in a problem of poor operability. On the other hand, since foreign matter such as gel-like particles and metal powder usually settles in paint, the foreign matter content increases relatively as the paint decreases. In particular, the suction of the foreign matter causes clogging of the spray gun and deterioration of coating quality due to adhesion of foreign matter to the painted surface.

[Effect of idea]

The present invention is based on the idea that a filter and a stirring blade are attached to the suction port of a suction pipe which is equipped with a vertical weight at the lower end and whose lower end can be moved to a position below the container due to the weight of the vertical weight. When the amount of paint is decreasing or when painting on an inclined surface, the paint can be sprayed continuously while being filtered, improving the quality of the paint, reducing the amount of residual paint, saving paint, and solving the above problems. The purpose is to provide paint cups for spray guns.

[Disclosure of invention]

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

In the figure, the paint cup 1 of the spray gun is
A container body 5 attached below the gun body 3 of the spray gun 2 and containing the paint A therein is provided with a suction whose upper end B communicates with the paint flow passage 6 of the gun body 3 and whose lower end C is equipped with a vertical weight 7. While the riser pipe 9 is attached, a filter 11 is detachably attached to the suction port 10 at the lower end C of the riser pipe 9.

In this example, the spray gun 2 is a suction type painting spray gun, and has an air cap 15 formed with a paint nozzle 13 for spraying the paint A at the front end.
At the same time, a paint nipple 16 is provided on the lower surface of the gun body 3 to protrude from one end of a paint passage 6 communicating with the paint nozzle 13.

Further, the paint cup 1 of the spray gun is installed below the paint nipple 16, and the paint A is supplied to the spray gun 2.
supply.

In this example, the paint cup 1 of the spray gun includes a cylindrical container body 5 containing paint A therein and a suction pipe 9.

The container body 5 has a holding cylinder 20 at its upper end, which has a threaded portion that is fixed to the lower part of the gun body 3 by screwing with the paint nipple 16, and has a guide hole 19 communicating with the paint flow path 6 inside. Lid body 2 that protrudes
1, and a container body 22 that is locked to the lid 21 and stores the paint A inside.

In addition, the lid body 21 and the container body 22 are
A locking pin 23 protruding from both sides and the locking pin 2
3 and loosely inserted into the holding cylinder 20, and a pair of wedge pieces 26 disposed on the lower surface of the yoke 25.
A and 26B, and the two are removably attached by a locking means 27 that pulls up the yoke 25 by rotating a wedge piece 26A above it.
In this example, the inner circumferential surface of the container main body 22 is treated with so-called Teflon processing, etc., to prevent the adhesion of the internal paint A and to facilitate cleaning of the inside and replacement of different paints. Further, a suction pipe 9 is attached to the lower surface of the lid 21.

In this example, as shown in FIGS. 2 and 3, the suction pipe 9 is rotatably attached to the center hole 30 of a connecting pipe 29 attached to the inner periphery of the holding cylinder 20 protruding from the lower surface of the lid 21. Can be stored in the container body. In addition, the suction pipe 9 has a hanging portion 9A loosely inserted into the center hole 30.
and an inclined portion 9B that curves laterally below the hanging portion 9A, and its lower end C
has a suction port 10 for sucking up the paint A and is equipped with a vertical plumb 7.

Moreover, the center hole 30 is provided on the inner periphery of the upper end of the suction pipe 9.
An engaging nut 33 having a through hole 31 drilled concentrically with the nut and having a flange 32 formed at the upper end is screwed,
The suction tube 9 is prevented from coming off by engaging the flange portion 32 and the upper end of the connecting tube 29.

In the vicinity of the upper and lower ends of the connecting pipe 29, there are small diameter portions 35, 35 formed by drawing or the like, and a gap L between the inner circumferential surface of the small diameter portion 35 and the outer circumferential surface of the hanging portion 9A.
By decreasing 1, the suction pipe 9 is rotatably arranged in substantially surface contact with the joint pipe 29 without wobbling. Also, in the gap L1, capillarity of the paint,
Paint pools due to surface tension, etc., and gaps L1, L1
An air pocket L2 is formed in between, and the air in the air pocket L2 acts like a bubble stopper. Therefore, air leakage from between the suction pipe 9 and the joint pipe 29 is prevented, and the paint in the paint reservoir acts as a lubricant, making the rotation smoother.

In addition, the upper end B of the suction pipe 9 is connected to the guide hole 19 and the through hole 3.
1, and supplies the paint A to the spray gun 2 from the suction port 10 at the lower end C. When the container body 5 is tilted, the suction pipe 9 is connected to the vertical plumb 7. The lower end C can be moved to a position below the container body 5.

In this example, the vertical plumb 7 is formed of a thick-walled cylindrical magnetic material, and its inner hole 36 allows the suction pipe 9
It is press-fitted into the lower end C, and a cutout surface 39 for positioning the filter 11 having the filter piece 37 and an arcuate groove 40 are formed on the peripheral surface.

In this example, the filter 11 is connected to the container body 2.
A mesh-like filter piece 37 is attached to the lower end of the cylindrical base 41 cut diagonally along the bottom surface of the base 41, and stirring blades are provided on the circumferential surface of the base 41 to extend inward and outward in the radial direction of the container body 22. 43,
43 is opposite. In this example, the base body 41 is made of a flexible synthetic resin such as plastic, and the inner hole 45 is provided with the notch surface in a state where the step portion 39A at the top of the notch surface 39 is in contact with the top end of the base body 41. A locking surface 46 and a locking rib 47 are provided, which prevent the base body 41 from rotating or coming off by engaging the base body 41 with the circular arc grooves 39 and 40, respectively, and are fitted while being positioned on the outer periphery of the vertical weight 7. Also filter 11
Since the base body 41 has flexibility, it can be easily removed by pulling downward, and the base body 41 can be easily attached and detached.

[Effect]

By blowing out the pressurized air supplied by triggering the spray gun 2, the paint A filled in the container body 22 is sucked up from the suction port 10 through the suction pipe 9, and is discharged from the tip of the paint nozzle 13. do.

Furthermore, even when the amount of paint in the container body 22 decreases and the spray gun 2 is used at an angle,
The suction pipe 9 can change the direction of the suction port 10 according to the inclination due to the weight of the plumb 7 at its lower end C, and can move to a position below the container body 5, that is, a position where paint accumulates. Therefore, it is possible to continue sucking up the paint without exposing the suction port 10 from the paint surface, preventing uneven coating due to interruptions in painting, and reducing the amount of paint remaining at the end of spraying, thereby saving paint. .

In addition, foreign matter such as gel particles and metal powder that sink into the paint can be filtered out by the filter 11 provided at the suction port 10, thereby preventing clogging of the paint nozzle 13 and preventing foreign matter from adhering to the painted surface. In this example, since the vertical weight 7 is made of a magnetic material, it is possible to adsorb fine metal powder that cannot be filtered by the filter 11. Furthermore, since it is equipped with stirring blades 43..., the paint A inside the container body 22 can be stirred from the initial stage to the final stage of painting.
The uneven density of paint A can be reduced and the quality of the coating can also be improved.

4 and 5 illustrate other embodiments of the vertical plumb 7 and the filter 11.

The plumb weight 7 has a lower end cut diagonally along the bottom surface of the container body 22, and is press-fitted into the lower end C of the suction pipe 9 through an inner hole 36 thereof.

In addition, the filter 11 has a locking piece 50 that engages with the lower end of the plumb weight 7 extending inward from the lower end of the base 41 on which the plumb weight 7 is fitted, and the periphery of the elliptical filter piece 37 is connected to the lower end of the plumb weight 7 and the locking piece 50 that engages with the lower end of the plumb weight 7. It is held between the stopper piece 50. Further, on the outer periphery of the base body 41, stirring blades 43 are formed in a cross shape. Therefore, the filter 11 makes it convenient to replace the filter piece 37, increases the exposed area of the inner hole 36 of the vertical weight 7, and increases the adsorption area of metal powder and the like.

Figures 6 and 7 further show vertical plumb 7 and filter 1.
Another example of No. 1 is illustrated below.

In this example, the vertical plumb 7 is made of a thick-walled metal tube,
It is press-fitted into the suction pipe 9 through the inner hole 36, and a threaded portion 52 is formed at the lower end.

The filter 11 also includes a cap-shaped filter piece 37 with a flange 56 projecting laterally on the periphery of the hemispherical base 55, and a locking nut. In this example, the locking nut 57 is made of a magnetic material, and has a threaded portion 57A that is screwed into the threaded portion 52 and an opening 57B that allows the base 55 of the filter piece 37 to be inserted downward.
While inserting the base 55 through the opening 57B, the locking portion 57C on the periphery of the opening 57B and the threaded portion 5 are inserted.
The collar portion 56 is held between the two lower ends. Also, the threaded part 52,
A stirring blade 60 is sandwiched between 57A with an appropriate sealant 59 interposed therebetween.

In this example, the stirring blade 60 includes stirring blade pieces 60A, 60A, which are formed by cutting and raising the periphery of a disk having a through hole 61 through which the threaded portion 52 is inserted.

Therefore, in this example, the filter 11 is made detachable by screwing together, and the filter piece 37 is formed into a substantially hemispherical shape, thereby increasing its filtration area. Furthermore, since the locking nut 57 is made of a magnetic material, it is convenient to remove the adsorbed metal powder.

[Effect of idea]

As described above, the paint cup of the spray gun of the present invention is equipped with a plumbum at the lower end, and a filter is attached to the suction port of the suction pipe, which can be moved to a position where the lower end is below the container body by the weight of the plumb. Since it is attached removably, the amount of paint is reduced, and even when the spray gun is used at an angle, the suction port changes its direction according to the inclination, allowing the amount of paint to be removed without being exposed from the surface of the paint. It is possible to continue sucking up the paint, which prevents uneven painting due to interruptions in painting, reduces the amount of paint remaining, and saves paint. Furthermore, it is possible to filter out foreign substances such as gel particles and metal powder that settle below the container body, preventing clogging of the spray gun due to foreign substances.
It is possible to prevent foreign matter from adhering to the painted surface, and together with the provision of stirring blades, it is possible to improve the quality of the painting. Furthermore, since the suction pipe is rotatably attached to the lid, the lower end can pass through the corner even when the bottom of the container is flat, thereby efficiently pumping up paint and reducing the amount of paint remaining.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a schematic sectional view showing the suction pipe, FIG. 3 is a schematic exploded perspective view thereof, FIGS. 4-5 are sectional views and perspective views showing other embodiments of the vertical plumb and filter, and FIG. FIG. 7 is a cross-sectional view showing still another embodiment of the filter, and FIG. 7 is a perspective view showing its stirring blade. 2... Spray gun, 3... Gun body, 5...
Container body, 6... Paint channel, 7... plumb, 9... Suction pipe, 10... Suction port, 11... Filter.

Claims (1)

[Scope of utility model registration request] A container body which is removably attached to a lid body fixed to a lower part of a gun body of a spray gun and which houses a paint therein is rotatably supported by the lid body and has a plumbstone at its lower end. Therefore, a suction pipe that can be rotated is placed at a position where the lower end is below the container body due to the weight of the plumb, and a filter for filtering the paint is provided at the lower end of the suction pipe, and a filter for stirring the paint is provided at the lower end of the suction pipe. A spray gun paint cup with a stirring blade attached.