Pressure stabilizing valve for paint spraying of robot

Abstract

The utility model discloses a robot paint spraying pressure stabilizing valve which comprises a valve body and a liquid inlet bin, an air inlet pipe is arranged at the top in the valve body, an air diaphragm is arranged on the upper portion of the valve body and tightly attached to the bottom edge of the air inlet pipe, a fluid diaphragm is arranged below the air diaphragm, and a bowl-mouth-shaped paint bin is arranged on the bottom face of the fluid diaphragm in a sealed mode. The bottom of the paint bin is communicated with the top of the liquid inlet bin, a spine matched with the paint bin in shape is placed on the paint bin, the top of the spine is fixed to the fluid diaphragm through a nut, the end of the nut penetrates through the fluid diaphragm and is tightly attached to the bottom face of the air diaphragm, and a liquid inlet is formed in the outer wall, making contact with the lower portion of the spine, of the paint bin. The two sides of the inner wall of the liquid inlet bin are attached to the side walls of the marbles through ball films, the tops of the marbles abut against the bottoms of the spikes, a spring is arranged in the liquid inlet bin, a paint inlet and a paint outlet are formed in the lower portion of the valve body, the paint inlet is communicated with the bottom of the liquid inlet bin, and the paint outlet is communicated with the outer wall of the paint bin. According to the utility model, the pressure of the spray gun during paint spraying is kept at a constant value.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-stabilizing valves, in particular to a pressure-stabilizing valve for robot paint spraying. Background Art

[0002] Robotic paint spraying uses air pressure to atomize the paint liquid in the spray gun through the nozzle and then applies it to the surface of the object to be painted. The paint is evenly sprayed on the surface of the object through the spray gun; and the amount of paint sprayed each time is accurately measured by a metering pump.

[0003] At present, robot spraying generally adopts hydraulic drive, and a diaphragm pump is connected in front of the metering pump for spraying. However, when the diaphragm pump is working, the force of the power operation is often different, resulting in unstable spraying pressure; thus, the surface of the sprayed object is uneven, reducing the qualified rate of the product. Summary of the invention

[0004] The utility model aims to address the deficiencies of the prior art and to provide a pressure-stabilizing valve for robot paint spraying, through which the pressure of the spray gun during spraying is kept at a constant value.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A robot spray paint pressure regulating valve comprises a valve body and a liquid inlet bin, an air inlet pipe for connecting an external air regulating valve is arranged at the top of the valve body, an air diaphragm is arranged at the upper part of the valve body and close to the bottom edge of the air inlet pipe, a fluid diaphragm is arranged below the air diaphragm, a bowl-shaped paint bin is sealed on the bottom surface of the fluid diaphragm, the bottom of the paint bin is connected to the top of the liquid inlet bin, a spike matching the shape of the paint bin is placed on the paint bin, the top of the spike is fixed on the fluid diaphragm through a leak-proof component, the end of the leak-proof component passes through the fluid diaphragm and close to the fluid diaphragm, and the paint bin is provided with a sharp spike. A liquid inlet is provided on the bottom surface of the air diaphragm, and the outer wall of the paint bin in contact with the lower part of the spikes. A marble is provided on the upper part of the liquid inlet bin. The inner walls of the liquid inlet bin on both sides are tightly fitted with the side walls of the marbles through the ball membrane. The top of the marbles is against the bottom of the spikes. A spring is provided in the liquid inlet bin, one end of the spring is connected to the bottom of the marble, and the other end of the spring is connected to the bottom surface of the liquid inlet bin. Paint inlets and paint outlets are respectively provided on both sides of the lower part of the valve body. The paint inlet is connected to the bottom of the liquid inlet bin through a pipe, and the paint outlet is connected to the outer wall of the paint bin through a pipe.

[0007] Preferably, the material of the air diaphragm is Φ15 polysulfone membrane.

[0008] Preferably, the thickness of the air membrane and the fluid membrane is 50 μm-100 μm.

[0009] Preferably, the end of the leakage prevention component is in an arc-shaped structure.

[0010] Preferably, the anti-leakage component is a nut.

[0011] The beneficial effects of the utility model are as follows: the utility model utilizes a pressure-stabilizing valve to be connected with a metering pump inside a robot spraying mechanism, and the pressure-stabilizing valve causes a certain deformation of an air diaphragm inside the pressure-stabilizing valve through an external air regulating valve, thereby keeping the pressure of the spray gun at a constant value when spraying paint, ensuring that the surface of the sprayed object is smooth and flat, thereby improving work efficiency and product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the utility model;

[0013] In the figure, 1, valve body; 2, air inlet pipe; 3, air diaphragm; 4, fluid diaphragm; 5, paint bin; 6, liquid inlet bin; 7, spikes; 8, anti-leakage component; 9, marbles; 10, ball membrane; 11, spring; 12, liquid inlet; 14, paint outlet; 13, paint inlet. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings:

[0015] like Figure 1 As shown, the utility model is a robot spray paint stabilizing valve comprising a valve body 1 and a liquid inlet bin 6, wherein an air inlet pipe 2 for an externally connected air regulating valve is provided at the top of the valve body 1 for conveying a quantitative air pressure into the valve body 1; an air diaphragm 3 made of a Φ15 polysulfone membrane is provided at the upper part of the valve body 1 and closely attached to the bottom edge of the air inlet pipe 2, a fluid diaphragm 4 is provided below the air diaphragm 3, a bowl-shaped paint bin 5 is sealed on the bottom surface of the fluid diaphragm 4, and the bottom of the paint bin 5 is communicated with the top of the liquid inlet bin 6 for conveying a quantitative amount of spray paint into the paint bin 5.

[0016] A spike 7 matching its shape is placed on the paint bin 5 in the utility model, the top of the spike 7 is fixed to the fluid diaphragm 4 through an anti-leakage component 8, the end of the anti-leakage component 8 passes through the fluid diaphragm 4 and is tightly attached to the bottom surface of the air diaphragm 3, wherein the end of the anti-leakage component 8 is an arc-shaped structure to prevent the air diaphragm 3 from being broken when it is deformed and pressed against the end of the anti-leakage component 8.

[0017] A liquid inlet 12 is provided on the outer wall of the paint bin 5 in the utility model that contacts the lower part of the spike 7, a marble 9 is provided on the upper part of the liquid inlet bin 6, and the upper inner wall of the liquid inlet bin 6 is tightly fitted with the side walls of the marble 9 through a ball membrane 10 on both sides, and the top of the marble 9 is against the bottom of the spike 7. A spring 11 is provided in the liquid inlet bin 6, one end of the spring 11 is connected to the bottom of the marble 9, and the other end of the spring 11 is connected to the bottom surface of the liquid inlet bin 6, and a paint inlet 13 and a paint outlet 14 are respectively provided on both sides of the lower part of the valve body 1, and the paint outlet 14 is connected to the bottom of the liquid inlet bin 6 through a pipeline, and the paint inlet 13 is connected to the outer wall of the paint bin 5 through a pipeline. The paint required for spraying will be delivered to the liquid inlet bin 6 through the paint inlet 13. At this time, the paint will use the spring 11 to tightly fit the marble 7 with the spherical membrane 10 on both sides of the upper inner wall of the liquid inlet bin 6, so that the delivered paint will always remain in the liquid inlet bin 6 and will not flow into the paint bin 5; when the air intake pipe 2 receives the quantitative air pressure delivered by the external air regulating valve, the quantitative air pressure will cause the air diaphragm 3 to deform downward, and at the same time, it will also squeeze the end of the anti-leakage component 8 downward; when the anti-leakage component 8 moves downward, it also moves downward with the spike 7 to push open the marble 9, so that a gap is generated between the marble 9 and the spherical membrane 10, so that the paint in the liquid inlet bin 6 flows out from the gap and flows into the paint bin 5 from the liquid inlet 12, and finally flows into the spray gun from the paint outlet 14 along the pipeline.

[0018] The thickness of the air diaphragm 3 and the fluid diaphragm 4 in the utility model is 50 μm-100 μm. The anti-leakage component 8 is a nut.

[0019] The use process of the utility model is as follows:

[0020] Before use, the air inlet pipe 2 is connected to an external air regulating valve, and the paint outlet 13 is connected to a spray gun.

[0021] When in use, the quantitative paint required for spraying will be delivered to the liquid inlet bin 6 through the paint inlet 13. At this time, the pressure during the paint delivery process will cause the marble 7 to fit tightly with the spherical membrane 10 on both sides of the upper inner wall of the liquid inlet bin 6 through the spring 11, so that the delivered paint exists in the liquid inlet bin 6 and will not flow into the paint bin 5; when the air intake pipe 2 receives the quantitative air pressure delivered by the external air regulating valve (the quantitative air pressure is greater than the pressure of the paint delivery), the quantitative air pressure will cause the air diaphragm 3 to deform downward, and at the same time, the end of the anti-leakage component 8 will be squeezed downward; when the anti-leakage component 8 moves downward, it also moves downward with the spike 7 to push open the marble 9, so that a gap is generated between the marble 9 and the spherical membrane 10, so that the paint in the liquid inlet bin 6 flows out from the gap and flows into the paint bin 5 from the liquid inlet 12, and finally flows into the spray gun from the paint outlet 14 along the pipeline, thereby completing the spraying work on the surface of the object.

[0022] Other unexplained parts of the present invention are the same as those of the prior art.

Claims

1. A robot paint spraying pressure regulating valve, characterized in that It comprises a valve body (1) and a liquid inlet bin (6). The top of the valve body (1) is provided with an air inlet pipe (2) for connecting an external air regulating valve. An air diaphragm (3) is provided at the upper part of the valve body (1) and in close contact with the bottom edge of the air inlet pipe (2). A fluid diaphragm (4) is provided below the air diaphragm (3). A bowl-shaped paint bin (5) is sealed on the bottom surface of the fluid diaphragm (4). The bottom of the paint bin (5) is connected to the top of the liquid inlet bin (6). A spike (7) matching its shape is placed on the paint bin (5). The top of the spike (7) is fixed to the fluid diaphragm (4) via a leak-proof component (8). The end of the leak-proof component (8) passes through the fluid diaphragm (4) and in close contact with the bottom surface of the air diaphragm (3). The paint bin (5) is connected to the top of the liquid inlet bin (6). A liquid inlet (12) is provided on the outer wall in contact with the lower part of the spike (7), a marble (9) is provided on the upper part of the liquid inlet bin (6), and the inner walls of the liquid inlet bin (6) are tightly fitted with the side walls of the marble (9) through a spherical membrane (10), and the top of the marble (9) is against the bottom of the spike (7). A spring (11) is provided in the liquid inlet bin (6), one end of the spring (11) is connected to the bottom of the marble (9), and the other end of the spring (11) is connected to the bottom surface of the liquid inlet bin (6). A paint inlet (13) and a paint outlet (14) are respectively provided on both sides of the lower part of the valve body (1), and the paint inlet (13) is connected to the bottom of the liquid inlet bin (6) through a pipeline, and the paint outlet (14) is connected to the outer wall of the paint bin (5) through a pipeline.

2. The robot paint spraying pressure regulating valve according to claim 1 is characterized in that The material of the air diaphragm (3) is a Φ15 polysulfone membrane.

3. The robot paint spraying pressure regulating valve according to claim 1 is characterized in that The thickness of the air diaphragm (3) and the fluid diaphragm (4) is 50 μm-100 μm.

4. The robot paint spraying pressure regulating valve according to claim 1 is characterized in that The end of the anti-leakage component (8) is in an arc-shaped structure.

5. The robot paint spraying pressure regulating valve according to claim 4 is characterized in that The anti-leakage component (8) is a nut.

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