TW201328783A - Spray coating device - Google Patents

Abstract

This invention provides a spraying coating device. The spraying coating device comprises a main body having a front end provided with a receiving space, a nozzle that is installed in the receiving space of the main body and includes a feeding port, a flow channel, an opening and a discharge port, a material cup that is utilized to feed material from the feeding port of the nozzle into the flow channel of the nozzle, and an actuation needle. Through pressing a control switch, the actuation needle is retracted from the discharge port of the nozzle and an intake valve is opened, thereby making a paint spray from the discharge port of the nozzle. Besides, a leak-stopping member, which is fixedly located at a front section of the actuation needle and configured between the feeding port and the opening of the nozzle, is utilized to blockingly prevent the paint from leakage toward the opening of the nozzle. Accordingly, purposes of this invention can be achieved.

Description

Spraying device

The invention relates to a spraying device, in particular to a spraying device which is easy to clean and reduce the cleaning area.

As shown in FIG. 5, the structure of the conventional airbrush 8 has a nozzle 81 at the front end of the body 80, and a driving needle 82 is disposed in the body 80 to the nozzle 81. The cup 83 is connected to the body. In the flow chamber 800, the paint in the cup 83 flows into the body 80 through the flow guiding chamber 800, and the intake valve 85 is opened by the pressing of the control switch 84, so that the high-pressure gas source flows out of the nozzle 81 through the intake passage 86. The paint is ejected to the outside of the head 81 via the flow path 87.

In the spraying operation of the airbrush 8 used in the painting, the paint will flow into the flow channel 87, and will follow the displacement of the writing needle 82 back and forth, which will cause the paint to flow backward, thus causing the paint to be on the body 80. The inner portion is viscous, especially at the inner wall surface 801 of the flow guiding chamber 800. Therefore, when the airbrush 8 is cleaned, since the inner wall surface 801 is located inside the body 80, the solvent can be poured, but it cannot be confirmed. The paint remaining on the inner wall surface 801 of the body 80 is completely removed, which may cause residue of the scale for a long time, and may even cause damage to the airbrush 8.

Further, as shown in FIG. 6, the structure of the conventional spray gun 9 has a nozzle 91 at the front end of the body 90, and a driving needle 92 is disposed in the body 90 to the nozzle 91. The cup 93 is also connected to the body 90. A flow guiding chamber 900, wherein the flow guiding chamber 900 also has an inner wall surface 901, and the paint in the material cup 93 flows into the body 90 via the flow guiding chamber 900, and the intake valve 95 is opened by pressing the control switch 94. The high-pressure gas source flows out of the nozzle 91 through the intake passage 96, and the paint is ejected to the outside of the nozzle 91 via the flow passage 97. The spray gun 9 used in the above description has a problem that the paint remaining on the inner wall surface 901 of the main body 90 cannot be surely removed as in the above-described airbrush 8.

Therefore, how to solve the problem of the conventional spraying device is the focus of the present invention.

The main object of the present invention is to solve the above problems and provide a spraying device, mainly because the actuating needle is provided with a leakage preventing member in the flow channel, and the material can be restricted to flow only in the nozzle by the leakage preventing member, and does not flow into the body. The nozzle and the actuating needle can be easily detached from the main body. Therefore, it is only necessary to clean the nozzle and the part of the actuating needle which adheres to the paint in the flow path, thereby completing the cleaning after the spraying operation, and achieving the effect of easily cleaning the spraying device.

For the purposes of the foregoing, the present invention includes:

a body, an intake valve is provided to connect the high-pressure gas source, and the intake valve is opened by pressing a control switch, the body having an accommodation space at the front end;

a nozzle is detachably mounted in the accommodating space, the front end of the nozzle is a nozzle, and the other end of the nozzle is a tail end, and the nozzle has a first-class passage penetrating the nozzle and the tail end, and the flow passage is The nozzle has an outlet at one end and an opening at the tail end, and the nozzle has an inlet port communicating with the flow passage between the nozzle and the tail end, and the discharge port of the nozzle and the intake valve Connected by an air inlet passage;

a cup having a chamber for storing paint, the chamber being in communication with the inlet, and feeding the material into the channel;

a driving needle having a rear section penetrating the body, and having a front section extending into the flow passage from the opening, a tip end portion at the end of the front section closing the discharge opening, and the front section is at the inlet opening And a stop member for blocking the leakage of the paint to the opening is fixed between the opening, and the needle is retracted from the discharge port with the pressing of the control switch when the needle is discharged.

The above and other objects and advantages of the present invention will be readily understood from

Of course, the invention may be varied on certain components, or in the arrangement of the components, but the selected embodiments are described in detail in the specification and their construction is shown in the drawings.

Referring to Figures 1 through 2, the structure of the embodiment selected for use in the present invention is for illustrative purposes only and is not limited by such structure in the patent application.

The present invention provides a spraying device. In the embodiment, a spray pen is used as an example. The airbrush comprises a body 1, a nozzle 2, a cup 3 and an actuating needle 4, wherein:

As shown in FIGS. 1 to 2, the body 1 of the present embodiment is provided with an intake valve 10 at the bottom, and the intake valve is fixed to the body 1 in a locking manner. The intake valve 10 is connected to the high pressure gas by the pipeline 100. The source, in conjunction with the intake valve, is provided with a control switch 11, whereby the intake valve 10 can be opened and closed by controlling the pressing of the switch 11, and the high-pressure gas source can pass through the intake valve 10 to enter the body 1. The body 1 of the embodiment has an accommodating space 12 at the front end and has a bare portion 13 .

As shown in Figures 1 to 2, the front end of the nozzle 2 is a spray head 20, and the other end of the spray head 20 is a tail end 21, and the nozzle 2 has a first-class passage 22 extending through the spray head 20 and the tail end 21, the flow passage The nozzle 20 has a discharge port 220 at one end thereof and an opening 221 at the tail end 21. The nozzle 2 has an inlet port 23 communicating with the flow channel 22 between the nozzle head 20 and the tail end 21 thereof. The nozzle 2 of the embodiment is installed in the accommodating space 12 in an interposed manner, and the nozzle 20 is exposed at the front end of the body 1 and is locked to the front end of the body 1 with an end cover 14 and the nozzle 2 is positioned. In the accommodating space 12, when the nozzle 2 is to be withdrawn from the accommodating space 12, the end cap 14 can be detached from the body 1 to pull out the nozzle 2.

As shown in the first to second figures, the discharge port 220 of the nozzle 2 and the intake valve 10 are connected by an intake passage 5, so that the high-pressure gas source enters the body 1 from the intake valve 10, and will be The intake passage 5 is introduced and ejected from the front end of the head 20.

As shown in Figures 1 to 2, the cup 3 has a chamber 30 which is mainly used for storing paint (in the present embodiment, a paint), and the cup 3 is connected to the bare by a joint portion 31. The empty portion 13 is connected to the nozzle 2, and after the connection, the chamber 30 is communicated with the inlet port 23. The paint disposed in the chamber 30 can be flowed through the inlet portion 23 of the nozzle 2 via the connecting portion 31. Up to the flow channel 22.

As shown in FIGS. 1 to 2, the actuating needle 4 has a rear section 40 which is bored in the body 1 and has a front section 41 extending into the flow path 22 from the opening 221, and has a tip at the end of the front section 41. The taper portion 410 closes the discharge port 220, and the front portion 41 fixes a stop member 42 between the inlet port 23 and the opening 221. The stop member 42 is annular in the embodiment to block the coating. The opening 221 is leaked out, and the actuator 4 is retracted from the discharge port 220 by the pressing of the control switch 11 during discharge.

When the airbrush of the embodiment is in use, the cup 3 is provided with a paint in the chamber 30, and the nozzle 2 is installed by the connecting portion 31, and the paint flows from the inlet port 23 into the flow channel 22, which When the operator presses the control switch 11, the intake valve 10 is opened and the actuating needle 4 is retracted from the discharge port 220, so that the high-pressure gas source enters the intake passage 5 via the intake valve, and is accessed by the intake passage. 5 is sprayed from the front end of the nozzle 20 of the nozzle 2, and the paint in the flow channel is diverted with the high-pressure gas source, and the paint and the high-pressure gas source are mixed, and the paint flows to the discharge port 220 with the high-pressure gas source. The spray head is sprayed out from the front end of the head 2.

In the cleaning of the airbrush of the embodiment after use, as shown in FIG. 2, the cup 3 can be detached from the nozzle 2, and the nozzle 2 can be taken out from the accommodating space 12 of the body 1, and then actuated. The needle 4 is withdrawn from the body 1, and at this time, the user can clean the nozzle 2, the cup 3, and the actuator needle 4 with a solvent. In the body 1 part, since the body 1 blocks the flow of the paint into the opening 1 through the stop member 42 and flows into the body 1 except for the part of the flow path 22 that is in contact with the paint in the flow path 22, the body 1 does not When the paint is in contact, the coating will not be applied to the body, so it is not necessary to clean the inside of the body 1 in particular.

It is not difficult to find the advantages of the present invention from the above description, in that the nozzle 2, which is mainly in contact with the paint by the spraying device, is designed to be easily detachable from the body 1, and the leakage pin 42 is disposed on the actuating needle 4 to block the leakage of the paint, so the body 1 Do not stick the paint, only need to remove the nozzle 2 to clean most of the paint, then clean the cup 3 and the needle 4 to complete the cleaning of the spray device, it can be seen that the spray device of the present invention is Cleaning after use is quite easy and convenient.

Of course, there are many examples of the invention, with only minor variations in the details. Referring to Figures 3 to 4, which are a second embodiment of the present invention, the spray gun is taken as an example, and has a body 1A, a nozzle 2A, a cup 3A and an actuating needle 4A as in the first embodiment. The body 1A also controls the opening of the intake valve 10A by pressing the switch 11A, and also sets a stop member 42A to the actuating needle 4A in the flow path 22A.

When the nozzle 2A of the embodiment is installed in the accommodating space 12A of the main body 1A, the nozzle 20A is also exposed at the front end of the main body 1A, and is locked to the front end of the main body 1A by the end cover 14A, and the nozzle is used by the end cover 14A. 2A is positioned in the accommodating space 12A.

The spray gun of the embodiment is similar to the spray pen of the first embodiment in operation, and in the cleaning, as shown in FIG. 4, the end cover 14A is first detached from the body 1A, and then the nozzle 2 is detached and accommodated. In the space 12A, the actuating needle 4A is taken out from the direction of the accommodating space 12A, and the cup 3A can be detached from the body 1A. At this time, the nozzle 2A, the cup 3A and the actuating needle 4A can be cleaned, and the In the same embodiment, the coating material is prevented from flowing to the body 1A through the leak stopping member 42A, and only the nozzle 2A, the cup 3A, and the actuating needle A are cleaned to complete the cleaning of the spraying device, so as to achieve the same as the first embodiment. efficacy.

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objects and is in accordance with the provisions of the Patent Law.

(customized part)

8. . . Airbrush

80. . . Ontology

800. . . Diversion chamber

801. . . Inner wall

81. . . Nozzle

82. . . Actuating needle

83. . . Cup

84. . . Control switch

85. . . Intake valve

86. . . Intake passage

87. . . Runner

9. . . spray gun

90. . . Ontology

900. . . Diversion chamber

901. . . Inner wall

91. . . Nozzle

92. . . Actuating needle

93. . . Cup

94. . . Control switch

95. . . Intake valve

96. . . Intake passage

97. . . Runner

(part of the invention)

1. . . Ontology

10. . . Intake valve

100. . . Pipeline

11. . . Control switch

12. . . Housing space

13. . . Naked space

14. . . End cap

2. . . nozzle

20. . . Nozzle

twenty one. . . Tail end

twenty two. . . Runner

220. . . Outlet

221. . . Opening

twenty three. . . feed inlet

3. . . Cup

30. . . Room

31. . . Connection

4. . . Actuating needle

40. . . Rear section

41. . . Front section

410. . . Tip cone

42. . . Stopper

5. . . Intake passage

1A. . . Ontology

10A. . . Intake valve

11A. . . Control switch

12A. . . Housing space

14A. . . End cap

2A. . . nozzle

22A. . . Runner

3A. . . Cup

4A. . . Actuating needle

42A. . . Stopper

Fig. 1 is a cross-sectional structural view of a spray pen according to a first embodiment of the present invention.

Fig. 2 is a schematic view showing the nozzle and the cup being detached from the airbrush of the first embodiment of the present invention.

Fig. 3 is a cross-sectional structural view showing a spray gun of a second embodiment of the present invention.

Fig. 4 is a view showing the nozzle of the second embodiment of the present invention for detaching the nozzle, the cup and the actuating needle.

Figure 5 is a schematic view of the structure of a conventional airbrush.

Figure 6 is a schematic view of the structure of a conventional spray gun.

1. . . Ontology

10. . . Intake valve

100. . . Pipeline

11. . . Control switch

12. . . Housing space

13. . . Naked space

14. . . End cap

2. . . nozzle

20. . . Nozzle

twenty one. . . Tail end

twenty two. . . Runner

220. . . Outlet

221. . . Opening

twenty three. . . feed inlet

3. . . Cup

30. . . Room

31. . . Connection

4. . . Actuating needle

40. . . Rear section

41. . . Front section

410. . . Tip cone

42. . . Stopper

5. . . Intake passage

Claims (4)

A spraying device comprising:
a body, an intake valve is provided to connect the high-pressure gas source, and the intake valve is opened by pressing a control switch, the body having an accommodation space at the front end;
a nozzle is detachably mounted in the accommodating space, the front end of the nozzle is a nozzle, and the other end of the nozzle is a tail end, and the nozzle has a first-class passage penetrating the nozzle and the tail end, and the flow passage is The nozzle has an outlet at one end and an opening at the tail end, and the nozzle has an inlet port communicating with the flow passage between the nozzle and the tail end, and the discharge port of the nozzle and the intake valve Connected by an air inlet passage;
a cup having a chamber for storing paint, the chamber being in communication with the inlet, and feeding the material into the channel;
a driving needle having a rear section penetrating the body, and having a front section extending into the flow passage from the opening, a tip end portion at the end of the front section closing the discharge opening, and the front section is at the inlet opening And a stop member for blocking the leakage of the paint to the opening is fixed between the opening, and the needle is retracted from the discharge port with the pressing of the control switch when the needle is discharged. The spraying device according to the first aspect of the invention, wherein the nozzle is exposed at a front end of the body, and is locked at an end of the body with an end cover and positioned in the accommodating space. The spraying device according to claim 2, wherein the spraying device is a spray pen, and the body has a bare space at the inlet of the nozzle, and the cup has a connecting portion The bare space is connected to the nozzle to communicate the chamber of the cup and the inlet of the nozzle. The spraying device of claim 2, wherein the spraying device is a spray gun.