WO2011047533A1

WO2011047533A1 - Powder spraying gun integrated with adjustable powder supplying system

Info

Publication number: WO2011047533A1
Application number: PCT/CN2010/001617
Authority: WO
Inventors: 李志军
Original assignee: Li Zhijun
Priority date: 2009-10-19
Filing date: 2010-10-15
Publication date: 2011-04-28

Abstract

A powder spraying gun integrated with an adjustable powder supplying system comprises a gun body. The gun body comprises a powder channel (10), a main air feeding channel (11), an air chamber (16), a first air valve base (12), a first through-hole (111), and a second through-hole (121). The first through-hole (111) is communicated with the main air feeding channel (11) and the first air valve base (12). The second through-hole (121) is communicated with the first air valve base (12) and the air chamber (16). The gun body further comprises an adjustable valve (23) installed at the exit of the air chamber (16) for adjusting the volume of the air venting flow. The powder spraying gun adjusts the volume of the air flow for supplying powder without a host machine system.

Description

Powder spray gun integrated with adjustable powder supply system

The invention relates to the field of electrostatic spraying, and in particular to a powder gun integrated with an adjustable powder supply system. Background technique

In the prior art, the electrostatic spray gun is equipped with high-voltage electricity at the lance. When the powder mixed with the high-pressure airflow passes through the lance, the induction is negatively charged, and then the workpiece is grounded to the workpiece, and the workpiece is grounded to the positive electrode. Under the action of electrostatic positive and negative phase absorption, it is adsorbed on the surface of the workpiece, and is heated and solidified by the oven to be solidified (or plasticized) into a coating. The current powder gun mainly comprises a barrel, a mixed powder gas pipe disposed in the inner cavity of the barrel, a discharge needle sleeve disposed in front of the barrel, electrically connected to the voltage output end of the high voltage generator, and disposed in the inner cavity of the discharge needle sleeve a discharge needle (gun needle), a nozzle that is sleeved outside the discharge needle sleeve and communicates with the mixed powder gas pipe, and a powder ring that is disposed on the outer surface of the front end of the discharge needle sleeve; in practical applications, A host system is needed to adjust the size of the powder supply airflow of the powder drum. When adjusting the air supply flow during operation, the worker needs to adjust to the main machine, which is time-consuming and labor-intensive.

Therefore, the prior art has drawbacks and needs improvement. Summary of the invention

The technical problem to be solved by the present invention is the deficiencies of the prior art, and a powder gun integrated with a tunable powder supply system is provided.

The technical solution of the present invention is as follows:

A powder gun integrated with an adjustable powder supply system, comprising: a gun body; the gun body comprises: a powder a passage, a main intake passage, a gas chamber, a first valve seat, a first through hole, a second through hole; the first through hole penetrating the main intake passage and the first valve seat, the second The through hole penetrates the first valve seat and the air chamber; and further includes an adjustment valve, and the adjustment gate is installed at the air chamber outlet position to adjust the air flow.

In the dusting gun, the gun body further includes: a fifth gas passage, a gas chamber, a third through hole, and a sixth through hole (144); the second side of the gun body is provided with the fifth gas passage The third through hole penetrates the air chamber and the second side of the gun body, the third through hole communicates with the air chamber and the fifth gas passage, and the sixth through hole penetrates the The fifth gas passage and the powder passage communicate with the fifth gas passage and the powder passage.

The dusting gun of the above is provided with a gas volume adjusting valve at a position where the third through hole communicates with the fifth gas passage to control the gas flow rate.

In the dusting gun, the gun body further includes: a first gas passage, a second gas passage, a third through hole, a fourth through hole and a fifth through hole; the first side of the gun body is first set a gas passage, a second side of the gun body is provided with a second gas passage, the third through hole penetrating the gas chamber and a second side of the gun body, and the fourth through hole penetrates the gun body a second side surface communicating with the third through hole and the first gas passage, wherein the fifth through hole penetrates through the second side surface and the first side surface of the gun body The first gas passage and the second gas passage;

The utility model further includes a gun head seat and a needle, the gun head seat is closely matched with the gun body, the needle is a hollow conductive pipe, and the gun head base comprises: a third gas passage and a fourth gas passage and a wire a channel, the third gas channel is in communication with the first gas channel, the fourth gas channel is in communication with the second gas channel, and the third gas channel and the fourth gas channel are converged in the tip holder A cleaning powder flow is output to the needle, and a wire disposed in the wire passage is electrically connected to the needle to supply high voltage static electricity to the needle.

In the dusting gun, a gas volume regulating valve is disposed at a junction of the fourth through hole and the first gas passage to control a gas flow rate. The dust spray gun of any of the above, further comprising a small powder hopper, the small powder hopper comprising a powder silo, an air inlet and a powder outlet, wherein the air inlet and the air chamber are connected by a pipe. The powder silo communicates with the powder passage through the powder outlet.

According to the above solution, the invention realizes the powder gun for adjusting the flow rate of the powder supply gas on the gun through the powder passage, the main intake passage, the air chamber, the first valve seat, the first through hole and the second through hole.

DRAWINGS

Figure 1 is a cross-sectional side view of the right side of the dusting gun of the present invention;

Figure 2 is a cross-sectional side view of the left side of the dusting gun of the present invention;

Figure 3 is a partial enlarged view of Figure 2;

Figure 4 is a partial cross-sectional front view of the left side of the powder gun of the present invention and the connection relationship with the gun head; Figure 5 is a partial cross-sectional front view of the right side of the powder gun of the present invention and assembly with other components. Figure 6 spray of the third embodiment of the present invention a partial cross-sectional view of the front side of the powder gun and an assembly view with the gun head;

Figure 7 is a view taken along the line A-A of Figure 6;

Figure 8 is a partial enlarged view of Figure 6;

Figure 9 is a partial cross-sectional front view of the right side of the dusting gun of the embodiment of the present invention; and an assembly view of the gun head, the barrel, and the needle;

Figure 10 is a cross-sectional view of the left side of the powder gun and a schematic diagram of the powder bucket; Figure 11 is a longitudinal sectional view of the powder gun of the present invention. detailed description

The invention will be described in detail below with reference to the drawings and specific embodiments.

Example 1

This embodiment first provides a powder gun integrated with an adjustable powder supply system, comprising: a gun body; as shown in FIG. 1, FIG. 2, and FIG. 3, the gun body includes: a powder passage 10, a main intake air a channel 11, a gas chamber 16, a first valve seat 12, a first through hole 111, and a second through hole 121; the first through hole 111 Passing through the main intake passage 11 and the first valve seat 12, the second through hole 121 penetrating the first valve seat 12 and the air chamber 16; further comprising an adjustment valve 23, the regulating valve Installed at the outlet of the air chamber 16, the air flow rate is adjusted.

During operation, the powder channel 10 is connected to the powder tank, the main air inlet passage 11 is connected to the high pressure gas, and the air valve installed in the gas valve seat is pressed, and the air valve simultaneously controls the circuit and the air inlet switch of the main intake passage. When the gas in the main intake passage passes through the first through hole 111, enters the gas valve seat 12, and then enters the second through hole 121, and then enters the powder bucket from the gas chamber 16 through the regulating valve 23 to supply powder to the powder drum. The airflow realizes the purpose of directly adjusting the size of the powder supply airflow on the dusting gun, thereby eliminating the trouble of adjusting the host.

Example 2

The embodiment further provides a powder gun with a built-in powder concentration adjustment system, comprising: a gun body 1 (including a left side portion 1-2 and a right side portion 1 - 1);

As shown in FIG. 2, FIG. 3 and FIG. 4, the gun body comprises: a powder passage 10, a main intake passage 11, a fifth gas passage 17, a gas chamber 16, a first valve seat 12, and a first through hole. 111, a second through hole 121, a third through hole 122, and a sixth through hole 144; the first through hole 111 penetrates the main intake passage 11 and the first valve seat 12, and the second through hole 121 Passing through the first valve seat 12 and the air chamber 11;

a fifth gas passage 17 is disposed on a left side of the gun body, the third through hole 122 extends through the air chamber 16 and a left side surface of the gun body, and the third through hole 122 communicates with the air chamber And the fifth gas passage 17, the sixth through hole 144 penetrating the fifth gas passage 17 and the powder passage 10, communicating with the fifth gas passage 17 and the powder passage 10, to the powder passage Provide air intake and adjust the powder concentration of the powder gun as needed.

Alternatively, as shown in Fig. 5, the sixth through hole 144 and the fifth gas passage 17 are disposed on the right side of the gun body, and the fifth gas passage 17 communicates with the third through hole 122 through the fourth through hole 143.

Preferably, in the spray gun, a gas volume adjusting valve 31 is disposed at a position where the third through hole 122 communicates with the fifth gas passage 17 to control the gas flow rate. Thus, by providing on the gun body: the powder passage 10, the main intake passage 11, the fifth gas passage Π, the plenum 16, the first valve seat 12, the first through hole 111, the second through hole 121, the first The three-way hole 122 and the sixth through hole 144 constitute a built-in dilution gas passage for adjusting the powder concentration of the dusting gun, and the powder concentration of the powder gun is adjusted in real time as needed, and the host adjustment system in the prior art is omitted. , reducing costs and improving construction efficiency.

During operation, the powder channel 10 is connected to the powder tank, the main air inlet passage 11 is connected to the high pressure gas, and the air valve installed in the gas valve seat is pressed, and the air valve simultaneously controls the circuit and the air inlet switch of the main intake passage. When the gas in the main intake passage passes through the first through hole 111, enters the gas valve seat 12, and then enters the second through hole 121, which in turn is the third through hole 122, the fifth gas passage 17, and the sixth through hole 144. Entering the powder channel 10 achieves the purpose of diluting the powder concentration as needed.

Example 3

The embodiment further provides a powder gun with a built-in needle cleaning system. As shown in FIGS. 1 to 9, the gun body 1 includes: a powder passage 10, a main intake passage 11, and a first gas passage 15. a second gas passage 14, a gas chamber 16, a first valve seat 12, a first through hole 111, a second through hole 121, a third through hole 122, a fourth through hole 143, and a fifth through hole 141; a first through hole 111 penetrating the main intake passage 11 and the first valve seat 12, the second through hole penetrating the first valve seat 12 and the air chamber 16; For a detailed structure of the third through hole 122, please refer to a partial enlarged view of FIG. a first gas passage 15 is disposed on the right side surface 1-1 of the gun body, and a second gas passage 14 is disposed on the left side surface 1-2 of the gun body, and the third through hole 122 penetrates the air chamber 16 and The left side surface 1-2 of the gun body passes through the left side surface 1-2 and the right side surface 1-1 of the gun body, and the fourth through hole 143 communicates with the first surface a three-way hole 122 and the first gas passage 15, the fifth through hole 141 penetrating the left side surface 1-2 and the right side surface 1-1 of the gun body, and communicating the first gas passage 15 and the Said second gas passage 14;

The gun base 2 is closely coupled to the gun body 1, the needle 4 is a hollow conductive pipe, and the gun head includes: a third gas passage 21 and a fourth gas passage 22, and a wire passage 23, The third gas passage 21 is in communication with the first gas passage 15, the fourth gas passage 11 and the The second gas passages 14 are in communication, and the third gas passages 21 and the fourth gas passages 22 are converged in the gun head housing to output a cleaning powder flow to the needles 4, and the wires and the wires are arranged in the wire passages. The needle 4 is electrically connected to provide high voltage static to the needle.

In operation, the powder passage 10 is connected to the powder supply tank, the main intake passage 11 is connected to the high pressure gas, and the air valve installed in the gas valve seat is pressed, and the air valve simultaneously controls the circuit and the air switch of the main intake passage. At this time, the gas in the main intake passage passes through the first through hole 111, enters the gas seat 12, and then enters the second through hole 121, which in turn is the third through hole 122, the fourth through hole 143, and the first gas passage. 15 , in the first gas passage 15, the air flow is divided into two paths, one way enters the fifth through hole 141, the second gas passage 14, the fourth gas passage 22, the needle; one way enters the third gas passage 21 needle; through the hollow The needle blows out the gas to remove the powder that is wrapped around the needle.

Example 4

This embodiment also provides a small sample gun (small experimental gun), which is used in a small-scale spraying experiment. As shown in FIG. 10, the powder gun also includes a small powder hopper 9 including a powder material. a silo 93, an air inlet 91 and a powder outlet 92, the powder silo 93 and the powder outlet 92 are fixedly connected, the air inlet 91 and the air chamber 16 are connected by a pipe, and the powder silo 93 passes the The powder outlet 92 communicates with the powder passage 10; thus, when the sample gun needs to be used, it is only necessary to install the small powder hopper 9 described above in the dust gun of the present invention. ,

As another example, as shown in FIG. 11, the open cavity and the powder passage 10 in the powder gun are separated by a powder passage rear block 19 that is movably connected to the gun body, and the inner surface of the powder passage block 19 and the powder passage 10 are smoothed. Transition, to reduce the resistance of the powder in the channel, as shown in Fig. 8, a cylindrical movable plug 20 is arranged in the powder passage back plug 19, and the movable plug 20 can be inserted into the powder after plugging 19, after the powder path The plug 19 is isolated from the open cavity, and after the movable plug 20 is worn, it can be removed and replaced.

As another example, as shown in FIG. 10, a voltage adjusting circuit 52 and a display unit 51 are disposed inside the gun body cavity, and the display unit 51 can indicate a change in the needle voltage, so that voltage adjustment and display functions can be realized on the gun. Integrated and miniaturized.

It should be understood that those skilled in the art can make according to the above description. Modifications or alterations, for example, the right side and the left side used in the above description, it will be apparent to those skilled in the art that the structure of the right side and the structure of the left side can also implement the present invention, and all of these Modifications and variations are intended to be included within the scope of the appended claims.

Claims

Claim

1. A powder gun integrated with an adjustable powder supply system, comprising: a gun body; the gun body comprises: 4 a material inlet channel, a main air inlet channel, a gas chamber, a first gas valve seat, and a first a through hole, a second through hole; the first through hole penetrates the main intake passage and the first valve seat, the second through hole penetrates the first valve seat and the air chamber; A regulating valve is included, and the regulating valve is installed at the outlet of the air chamber to regulate the flow of the air.

2. The powder gun according to claim 1, wherein the gun body further comprises: a fifth gas passage, a gas chamber, a third through hole, and a sixth through hole (144); The second side is disposed with the fifth gas passage, the third through hole penetrating the gas chamber and the second side of the gun body, and the third through hole communicates with the gas chamber and the fifth gas passage The sixth through hole penetrates the fifth gas passage and the powder passage, and communicates with the fifth gas passage and the powder passage.

3. The dusting gun according to claim 2, wherein a gas volume adjusting valve is disposed at a position where the third through hole communicates with the fifth gas passage to control a gas flow rate.

4. The powder gun according to claim 1, wherein the gun body further comprises: a first gas passage, a second gas passage, a third through hole, a fourth through hole and a fifth through hole; a first gas passage is disposed on a first side of the gun body, a second gas passage is disposed on a second side of the gun body, and the third through hole penetrates the air chamber and the second side of the gun body, The fourth through hole penetrates the second side surface of the gun body and the first side surface, the fourth through hole communicates with the third through hole and the first gas passage, and the fifth through hole penetrates the gun body a second side and a first side, communicating the first gas passage and the second gas passage;

The utility model further includes a gun head seat and a needle, the gun head seat is closely matched with the gun body, the needle is a hollow conductive pipe, and the gun head base comprises: a third gas passage and a fourth gas passage and a wire a passage, the third gas passage is in communication with the first gas passage, the fourth gas passage is in communication with the second gas passage, and the third gas passage and the fourth gas passage are in the nozzle The inside of the seat is concentrated to output a clear air flow to the needle, and a wire disposed in the wire passage is electrically connected to the needle to provide high voltage static electricity to the needle.

The dusting gun according to claim 4, wherein a gas volume adjusting valve is disposed at a junction of the fourth through hole and the first gas passage to control a gas flow rate.

The dusting gun according to any one of claims 1 to 5, further comprising a small powder hopper, the small powder hopper comprising a powder silo, an air inlet and a powder outlet, the air inlet The port communicates with the air chamber through a pipeline, and the powder silo communicates with the powder passage through the powder outlet.