Spraying equipment for metal surface color changing

Abstract

The invention relates to the technical field of plastic spraying, and discloses spraying equipment for metal surface color changing, which comprises a spray gun, and the bottom of the spray gun is connected with a powder input pipe in a nested manner. Under the influence of the volume degree of the powder in a caking state, the powder possibly impacts the side wall of the electricity induction sensor under the influence of the output airflow of the air conveying pipe, the powder is separated to a certain degree according to the impact force, and the powder is separated according to the internal layout of the screening impeller; part of caked powder passes through the position along with circulating air flow to achieve secondary separation, the possible caking phenomenon is reduced, high-pressure air sprayed in the spray gun can promote the driving impeller to rotate and drive the screening impeller to rotate, a plurality of protruding blocks are arranged on blades of the driving impeller, and therefore the screening effect is improved. The interval difference formed among the bulged blocks can influence the circulation of the gas and the powder along the outer wall, a similar wind breaking behavior is presented, the circulation is more facilitated, and the layout among the blades is equivalent to the division of the airflow.

Description

Technical Field

[0001] The invention relates to the technical field of plastic spraying, in particular to a spraying device for changing the color of a metal surface. Background Art

[0002] The powder coating is sprayed onto the surface of the workpiece through the powder spraying equipment. It adheres to the surface of the workpiece under the action of static electricity to form a coating. It is then leveled and solidified through high-temperature baking to enhance the mechanical strength, corrosion resistance and aging resistance of the workpiece. When using plastic spraying, powder accumulation may form lumps, which will affect the quality of plastic spraying, causing uneven powder distribution or protrusions during baking, resulting in partial powder agglomeration or not covering the target surface, causing the target itself to be exposed to the air. Especially when powder baking is required, abnormalities may occur in the target range not covered by powder. At the same time, if larger agglomerates enter the gun body, it is easy to cause blockage, resulting in metal powder accumulation inside the gun body, causing damage to internal parts, affecting production efficiency, and increasing losses. Summary of the Invention

[0003] The purpose of the present invention is to provide a spraying device for changing the color of a metal surface to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a spraying device for changing the color of a metal surface, comprising a spray gun, wherein a powder input pipe is nested and connected at the bottom of the spray gun, an air supply pipe is embedded and connected at the center of the bottom of the spray gun, and a power cord is embedded and connected at the side of the bottom of the spray gun away from the air supply pipe, comprising: A circulation mechanism, wherein a sleeve assembly is provided inside the circulation mechanism; A slotted assembly is provided inside the sleeve assembly to guide the internal airflow and metal powder; A boosting mechanism is provided inside the circulation mechanism and is used to interfere with the internal airflow and metal powder; The diffusion mechanism is arranged at the side wall of the supercharging mechanism and is used to diffuse the output airflow and metal powder.

[0005] Furthermore, the sleeve assembly is sleeved on the outer wall of the spray gun through a rotating member; The rotating member includes a tightening sleeve movably connected to the outer wall of the spray gun; The slotting component is opened inside the sleeve component through an opening piece; The opening piece includes a sliding groove opened inside the sleeve assembly.

[0006] Furthermore, the boosting mechanism includes: An interference assembly, the interference assembly being fixedly connected to the interior of the slotted assembly via a fixing member; The fixing member includes a corrugated sleeve 1 fixedly connected to the interior of the slotted assembly; A driving assembly, the driving assembly being arranged on a side wall of the interference assembly through a setting member; The setting member includes a driving impeller fixedly connected to the side wall of the interference component.

[0007] Furthermore, the diffusion mechanism includes: A driven component, the driven component is sleeved on the outer wall of the driving component through a sleeve member; The sleeve includes a driven rod placed at the side wall of the driving assembly; An interference component is placed inside the driven component through a placement member; The placement member includes an electrostatic discharge rod placed inside the driven component.

[0008] Furthermore, the sleeve assembly includes a delivery sleeve sleeved inside the tightening sleeve, an inductive sensor is placed on the side of the tightening sleeve close to the spray gun, and a hollow groove is opened inside the delivery sleeve; Among them, a conductive rod is placed inside the side of the spray gun close to the tightening sleeve, the outer wall of the conductive rod close to the tightening sleeve is in contact with the side wall of the inductive sensor, the inductive sensor is nested in the side wall of the conveying sleeve, and the outer wall of the inductive sensor away from the conveying sleeve is nested inside the inductive sensor.

[0009] Furthermore, the slotting component includes a boosting chamber opened inside the conveying sleeve, the boosting chamber is connected to the sliding groove, and a conveying chamber is opened on the side of the boosting chamber away from the sliding groove, and the conveying chamber is connected to the boosting chamber.

[0010] Furthermore, the interference assembly includes a corrugated sleeve fixedly connected to the inner wall of the conveying cavity, the sliding sleeve is slidably connected to the interior of the sliding groove, the inner wall of the sliding sleeve is fixedly connected to the sub-screening impeller, the side wall of the sub-screening impeller is embedded in the interior of the hollow groove, the center of the sub-screening impeller is hollow, and the interior of the sub-screening impeller is slidably connected to the transmission pole; Wherein, a side of the transmission pole close to the inductive sensor slides inside the inductive sensor.

[0011] Furthermore, the driving assembly includes a driving impeller fixedly connected to the side wall of the sub-screening impeller, the interior of the driving impeller is hollow, an umbrella-shaped central shaft is fixedly connected to the side of the sub-screening impeller away from the driving impeller, a plurality of brackets are fixedly connected to the outer wall of the umbrella-shaped central shaft, a through placement cavity is opened inside the umbrella-shaped central shaft, and a plurality of L-shaped buckles are fixedly connected to the side of the umbrella-shaped central shaft away from the driving impeller; The transmission pole slides in the inner wall of the placement cavity.

[0012] Furthermore, the driven assembly includes a driven rod disposed on the side wall of the umbrella-shaped central shaft, a plurality of buckle grooves are formed on a side of the driven rod close to the L-shaped buckle, a through groove is formed on the side wall of the driven rod, and a second corrugated sleeve is fixedly connected to the outer wall of the driven rod; The outer wall of the L-shaped buckle is slidably connected to the inside of the buckle groove.

[0013] Furthermore, the interference component includes an electrostatic release rod movably connected to the interior of the through-groove, an umbrella-shaped diffusion sleeve is fixedly connected to a side of the through-groove close to the electrostatic release rod, and a split support sleeve is slidably connected to an outer wall of a side of the driven rod close to the buckle groove; The outer wall of the split support sleeve is fixedly connected to the inner wall of the conveying cavity, and the side of the electrostatic release rod close to the transmission pole slides inside the transmission pole.

[0014] The present invention has the following beneficial effects: 1. Powder entering the spray gun and discharged through the spray gun's outlet may be agglomerated. When agglomerated powder in the powder inlet pipe is drawn into the spray gun and discharged through the outlet, the volume of the agglomerated powder is affected by the airflow from the air supply pipe, which may impact the side wall of the inductive sensor. Because the inductive sensor is blade-shaped on the side closest to the spray gun, the impact causes a certain degree of separation. Some powder flows with the gas into the sieve impeller. Due to the internal layout of the sieve impeller, the airflow causes some of the agglomerated powder to pass through this area for secondary separation, reducing the possibility of agglomeration. The high-pressure gas injected from the spray gun causes the driving impeller to rotate, driving the sieve impeller. The driving impeller blades have several arranged protrusions. The gaps between the protrusions affect the flow of gas and powder along the outer wall, similar to wind-breaking behavior, which is more conducive to circulation. The layout of the blades effectively divides the airflow, reducing the circulation environment and increasing the airflow velocity.

[0015] 2. There may still be some nodes and agglomerates inside the spray gun after being divided by the sieve impeller. When the air flow circulates through the driving impeller, due to the fixed connection between the driving impeller and the sieve impeller, it is equivalent to using the air flow to cause the driving impeller to rotate, driving the sieve impeller to rotate. When the air flow carries the powder through the sieve impeller into the inside of the boost chamber, the rotation of the sieve impeller causes the umbrella-shaped central axis to rotate, and the air flow entering the boost chamber is swung toward the inner wall of the boost chamber according to the outer wall of the umbrella-shaped central axis. The side of the umbrella-shaped central axis close to the bracket causes the internal air flow to converge at the angle due to the inertia of rotation, resulting in a backflow and inward rotation phenomenon. The working spray gun will continue to transport powder and gas, and the powder gathered at the angle is replaced by the powder and gas entering later, and moves in a spiral shape along the outer wall of the umbrella-shaped central axis toward the direction of the L-shaped buckle. The internal powder is affected by the air flow and dispersed through the swirling phenomenon, reducing the occurrence of aggregation and agglomeration to cause blockage, enhancing powder crushing and promoting the drying reaction.

[0016] 3. The input air flow for the spray gun is usually compressed air. Air is extracted from the surrounding environment and transported through the air pipe. The compressed air generates low temperature and may carry some water vapor components. When the gas carries the powder and continuously transports it into the pressurized chamber, it is transported along the outer wall of the umbrella-shaped central axis in a spiral shape according to the above-mentioned method. When it enters the conveying chamber, the space is gradually compressed, and the gas is compressed to increase the flow rate reaction, so that the airflow carrying the powder is accelerated, and the accelerated airflow impacts the surface of the corrugated sleeve 2, flows along the inner wall of the conveying chamber, and impacts the inner wall of the corrugated sleeve 1 again. After multiple impacts, the powder is dispersed to the greatest extent, and the finer powder will circulate directly, so that the possible moisture is dispersed by the airflow under the influence of the compressed environment, and the pressurized airflow makes the powder more impactful, thereby improving the adsorption of the spray particles.

[0017] 4. Regarding the internal input airflow of the spray gun, when the driving impeller rotates and drives the sieve impeller to rotate, the L-shaped buckle slides inside the buckle groove under the traction of the rotation, thereby carrying the driven rod to rotate synchronously, and because the side of the transmission rod close to the inductive sensor slides inside the inductive sensor, and the transmission rod simultaneously penetrates and slides inside the driving impeller and the umbrella-shaped central axis, the static current is conducted from the conductive rod through the inductive sensor to the transmission rod, and the side of the transmission rod close to the electrostatic release rod slides and connects to the outer wall of the electrostatic release rod, and the static electricity is released through the electrostatic release rod. The powder carries static electricity and can adhere to the target. The driven impeller drives the driven rod to rotate with the umbrella-shaped diffusion sleeve, and the compressed airflow impacts the surface of the umbrella-shaped diffusion sleeve. Since the umbrella-shaped diffusion sleeve presents a certain degree of slope, the impacted airflow carries the powder and sprays it in a conical shape. The existence of the split support sleeve allows the airflow to be divided into multiple parts again, making the area wider. The powder generates centrifugal force under the action of rotation, reducing the phenomenon of different coverage areas when the powder is sprayed. At the same time, the static electricity release rod is not affected in the process of rotation to contact the powder to conduct static electricity, thereby increasing the efficiency of plastic spraying.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic structural diagram of the main body of the present invention; Figure 4 This is a schematic diagram of the structure of the slotting assembly of the present invention; Figure 5 This is a schematic diagram of the interference assembly structure of the present invention; Figure 6 A schematic diagram of the local structure of the components of the present invention is provided; Figure 7 For the present invention Figure 6 The schematic diagram of the structure shown at A in the middle; Figure 8 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 9 This is a schematic structural diagram of the driven component of the present invention; Figure 10 This is a schematic diagram of the structure of local parts of the interference component of the present invention; Figure 11 It is a schematic diagram of the local structure of the interference component of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows: In the figure: 1. circulation mechanism; 13. spray gun; 14. powder input pipe; 15. gas pipe; 16. power cord; 17. conductive rod; 11. sleeve assembly; 111. tightening sleeve; 112. delivery sleeve; 113. inductive sensor; 114. hollow groove; 12. slot assembly; 121. sliding groove; 122. pressurizing chamber; 123. delivery chamber; 2. pressurizing mechanism; 21. interference assembly; 211. corrugated sleeve 1; 212. sliding sleeve; 213. Screening impeller; 214. Transmission pole; 22. Driving assembly; 221. Driving impeller; 222. Umbrella-shaped central axis; 223. Bracket; 224. Placement cavity; 225. L-shaped buckle; 3. Diffusion mechanism; 31. Follower assembly; 311. Follower rod; 312. Buckle groove; 313. Through groove; 314. Corrugated sleeve II; 32. Interference assembly; 321. Electrostatic release rod; 322. Umbrella-shaped diffusion sleeve; 323. Split support sleeve. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1 - Figure 11 As shown, the present invention provides a spraying device for changing the color of a metal surface, comprising a spray gun 13, a powder input pipe 14 being nested and connected at the bottom of the spray gun 13, an air supply pipe 15 being embedded and connected at the center of the bottom of the spray gun 13, and a power cord 16 being embedded and connected at the side of the bottom of the spray gun 13 away from the air supply pipe 15, including: The circulation mechanism 1 has a sleeve assembly 11 disposed therein; The sleeve assembly 11 is provided with a slot assembly 12 inside to guide the internal airflow and metal powder; The boosting mechanism 2 is arranged inside the circulation mechanism 1 and is used to interfere with the internal airflow and metal powder; The diffusion mechanism 3 is arranged at the side wall of the supercharging mechanism 2 and is used to diffuse the output airflow and metal powder.

[0024] The sleeve assembly 11 is sleeved on the outer wall of the spray gun 13 through a rotating member; The rotating member includes a tightening sleeve 111 movably connected to the outer wall of the spray gun 13; The slotting assembly 12 is opened inside the sleeve assembly 11 through an opening piece; The opening member includes a sliding groove 121 formed inside the sleeve assembly 11 .

[0025] The boosting mechanism 2 includes: The interference component 21 is fixedly connected to the interior of the slotting component 12 through a fixing member; The fixing member includes a corrugated sleeve 211 fixedly connected to the interior of the slotted assembly 12; A driving assembly 22, the driving assembly 22 is arranged on the side wall of the interference assembly 21 through a setting member; The setting member includes a driving impeller 221 fixedly connected to the side wall of the interference component 21.

[0026] The diffusion mechanism 3 includes: A driven component 31, the driven component 31 is sleeved on the outer wall of the driving component 22 through a sleeve; The sleeve includes a driven rod 311 placed on the side wall of the driving assembly 22; The interference component 32 is placed inside the driven component 31 through a placement member; The placement member includes an electrostatic release rod 321 placed inside the driven component 31 .

[0027] The sleeve assembly 11 includes a delivery sleeve 112 sleeved inside a tightening sleeve 111. An inductive sensor 113 is placed on the side of the tightening sleeve 111 close to the spray gun 13. A hollow groove 114 is opened inside the delivery sleeve 112. Among them, a conductive rod 17 is placed inside the side of the spray gun 13 close to the tightening sleeve 111, and the outer wall of the conductive rod 17 close to the tightening sleeve 111 is in contact with the side wall of the inductive sensor 113. The inductive sensor 113 is nested in the side wall of the conveying sleeve 112, and the outer wall of the inductive sensor 113 away from the conveying sleeve 112 is nested in the interior of the inductive sensor 113; it is used to connect with the outer wall of the spray gun 13 to avoid falling off and play a limiting role.

[0028] The slotting assembly 12 includes a boosting chamber 122 opened inside the conveying sleeve 112, and the boosting chamber 122 is connected to the sliding groove 121. A conveying chamber 123 is opened on the side of the boosting chamber 122 away from the sliding groove 121, and the conveying chamber 123 is connected to the boosting chamber 122; it is used to convey and interfere with the internal airflow and powder, so that they can circulate and transmit internally.

[0029] The interference assembly 21 includes a corrugated sleeve 211 fixedly connected to the inner wall of the conveying cavity 123. A sliding sleeve 212 is slidably connected to the interior of the sliding groove 121. A sub-screening impeller 213 is fixedly connected to the inner wall of the sliding sleeve 212. The side wall of the sub-screening impeller 213 is embedded in the interior of the hollow groove 114. The center of the sub-screening impeller 213 is hollow. The interior of the sub-screening impeller 213 is slidably connected to the transmission pole 214. The transmission rod 214 slides inside the inductive sensor 113 on a side close to the inductive sensor 113 , and is used to pull and compress the airflow and powder transmitted inside.

[0030] The driving assembly 22 includes a driving impeller 221 fixedly connected to the side wall of the sub-screening impeller 213. The interior of the driving impeller 221 is hollow. An umbrella-shaped central shaft 222 is fixedly connected to the side of the sub-screening impeller 213 away from the driving impeller 221. A plurality of brackets 223 are fixedly connected to the outer wall of the umbrella-shaped central shaft 222. A placement cavity 224 is formed through the interior of the umbrella-shaped central shaft 222. A plurality of L-shaped buckles 225 are fixedly connected to the side of the umbrella-shaped central shaft 222 away from the driving impeller 221. The transmission pole 214 slides in the inner wall of the placement cavity 224 and is used to transmit force to the air flow being transported.

[0031] The driven assembly 31 includes a driven rod 311 disposed on the side wall of the umbrella-shaped central shaft 222. A plurality of buckle grooves 312 are formed on one side of the driven rod 311 near the L-shaped buckle 225. A through-groove 313 is formed on the side wall of the driven rod 311. A second corrugated sleeve 314 is fixedly connected to the outer wall of the driven rod 311. Among them, the outer wall of the L-shaped buckle 225 is slidably connected to the inside of the buckle groove 312; 5. It is used to connect the L-shaped buckle 225 and rotate the driven rod 311 through the driving force.

[0032] The interference assembly 32 includes an electrostatic release rod 321 movably connected to the interior of the through-groove 313. An umbrella-shaped diffusion sleeve 322 is fixedly connected to one side of the through-groove 313 near the electrostatic release rod 321. A split support sleeve 323 is slidably connected to the outer wall of the driven rod 311 near the buckle groove 312. Among them, the outer wall of the split support sleeve 323 is fixedly connected to the inner wall of the conveying cavity 123, and the electrostatic release rod 321 slides inside the transmission rod 214 on the side close to the transmission rod 214; it is used to hinder the internal powder and airflow and diffuse it for spraying.

[0033] In the first specific embodiment of the present invention, when in use, the powder input pipe 14 is connected to the external material transmission equipment, the gas pipe 15 is connected to the external gas compression equipment, and the power line 16 is connected to the external power supply equipment; When the agglomerated powder that may exist in the powder input pipe 14 is sucked into the interior of the spray gun 13 and discharged through the output port, due to the influence of the volume of the powder in the agglomerated state, it may impact the side wall of the inductive sensor 113 under the influence of the output airflow of the gas supply pipe 15. Since the side of the inductive sensor 113 close to the spray gun 13 is in the shape of a blade, it is separated to a certain extent according to the impact force, and part of the powder enters the interior of the sieve impeller 213 with the flow of gas. According to the layout of the interior of the sieve impeller 213, part of the agglomerated powder is separated twice by the flow of air, thereby reducing the possible agglomeration phenomenon. The high-pressure gas injected from the spray gun 13 will prompt the driving impeller 221 to rotate, driving the sieve impeller 213 to rotate, and there are several raised blocks arranged on the blades of the driving impeller 221. The gap difference formed between the raised agglomerates will affect the flow of gas and powder along the outer wall, presenting a similar wind-breaking behavior, such as Figure 7 As shown in the middle H, it is more conducive to circulation, and the layout between the blades is equivalent to dividing the airflow, making the circulation environment smaller and increasing the airflow speed; After being divided by the sieve impeller 213, there may still be some nodes and agglomerations inside the spray gun 13. When the airflow circulates through the driving impeller 221, due to the fixed connection between the driving impeller 221 and the sieve impeller 213, it is equivalent to using the airflow to cause the driving impeller 221 to rotate, driving the sieve impeller 213 to rotate. When the airflow carries the powder through the sieve impeller 213 and enters the inside of the boost chamber 122, the rotation of the sieve impeller 213 causes the umbrella-shaped central axis 222 to rotate, and the airflow entering the boost chamber 122 is rotated according to the umbrella-shaped central axis 222. The outer wall of the umbrella-shaped central axis 222 is swung toward the inner wall of the supercharging chamber 122, and the side of the umbrella-shaped central axis 222 close to the bracket 223 causes the internal airflow to converge at the angle due to the inertia of rotation, resulting in a reflux inward rotation phenomenon. The working spray gun 13 will continue to transport powder and gas, and the powder gathered at the angle is replaced by the powder and gas entering later, and moves in a spiral shape along the outer wall of the umbrella-shaped central axis 222 toward the L-shaped buckle 225. The internal powder is dispersed by the airflow through the vortex phenomenon, reducing the occurrence of agglomeration and caking to cause blockage, thereby enhancing powder crushing and promoting the drying reaction. The input air flow of the spray gun 13 is usually compressed air, which is extracted from the surrounding environment and transported through the air pipe 15. The compressed air generates low temperature and may carry some water vapor components. After the gas-carrying powder is continuously transported into the boosting chamber 122, it is transported along the outer wall of the umbrella-shaped central axis 222 in a spiral shape as described above. When entering the interior of the conveying chamber 123, the space is gradually compressed, and the gas is compressed and the flow rate is increased, so that the air flow carrying the powder is accelerated. The accelerated air flow impacts the surface of the second corrugated sleeve 314, flows along the inner wall of the conveying chamber 123, and impacts the inner wall of the first corrugated sleeve 211 again. After multiple impacts, the powder is dispersed to the greatest extent, and the finer powder will circulate directly, so that the moisture that may exist will be dispersed by the blowing of the air flow under the influence of the compressed environment. The pressurized air flow makes the powder have more impact force, promotes air flow circulation, achieves better spraying, and increases spraying efficiency. When the driving impeller 221 rotates to drive the screening impeller 213 to rotate, the L-shaped buckle 225 slides inside the buckle groove 312 under the traction of the rotation, thereby carrying the driven rod 311 to rotate synchronously, and since the side of the transmission rod 214 close to the inductive sensor 113 slides inside the inductive sensor 113, and the transmission rod 214 is simultaneously passed through and slidably connected to the driving impeller 221 and the umbrella-shaped central shaft 222, the static current is conducted from the conductive rod 17 through the inductive sensor 113 to the transmission rod 214, and the side of the transmission rod 214 close to the electrostatic release rod 321 is slidably connected to the outer wall of the electrostatic release rod 321, through the electrostatic release The release rod 321 releases static electricity so that the powder can adhere to the target with static electricity. The driving impeller 221 drives the driven rod 311 to rotate with the umbrella-shaped diffusion sleeve 322, and the compressed airflow impacts the surface of the umbrella-shaped diffusion sleeve 322. Since the umbrella-shaped diffusion sleeve 322 has a certain degree of slope, the impacted airflow carries the powder and sprays it in a conical shape. The presence of the split support sleeve 323 allows the airflow to be divided into multiple parts again, making the area wider. The powder generates centrifugal force under the action of rotation, reducing the phenomenon of different coverage areas when the powder is sprayed. At the same time, the rotation process does not affect the static electricity release rod 321 contacting the powder to conduct static electricity, thereby increasing the spraying efficiency. When it is necessary to change the color of the spray, the powder conveying connection with the powder input pipe 14 can be closed, and the powder that may remain inside can be blown out by inputting compressed air to avoid powder mixing in the new spray coating, improve production efficiency, and shorten the time for cleaning the internal powder.

[0034] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A spraying device for changing the color of a metal surface, comprising a spray gun (13), wherein a powder input pipe (14) is nested and connected at the bottom of the spray gun (13), an air supply pipe (15) is embedded and connected at the center of the bottom of the spray gun (13), and a power cord (16) is embedded and connected at the side of the bottom of the spray gun (13) away from the air supply pipe (15), wherein the spray gun (13) is characterized in that: Also includes: A circulation mechanism (1), wherein a sleeve assembly (11) is provided inside the circulation mechanism (1); A slotted assembly (12) is provided inside the sleeve assembly (11) for guiding the internal airflow and metal powder; A boosting mechanism (2), the boosting mechanism (2) being arranged inside the circulation mechanism (1) and used to interfere with the internal airflow and metal powder; A diffusion mechanism (3) is provided on the side wall of the boost mechanism (2) and is used to diffuse the output airflow and metal powder.

2. The metal surface color-changing spraying device according to claim 1, characterized in that: The sleeve assembly (11) is sleeved on the outer wall of the spray gun (13) via a rotating member; The rotating member comprises a tightening sleeve (111) movably connected to the outer wall of the spray gun (13); The slotting assembly (12) is opened inside the sleeve assembly (11) via an opening member; The opening member comprises a sliding groove (121) opened inside the sleeve assembly (11).

3. The metal surface color-changing spraying device according to claim 2, characterized in that: The boost mechanism (2) comprises: An interference assembly (21), the interference assembly (21) being fixedly connected to the interior of the slotting assembly (12) via a fixing member; The fixing member comprises a corrugated sleeve (211) fixedly connected to the interior of the slotted assembly (12); A drive assembly (22), wherein the drive assembly (22) is arranged on a side wall of the interference assembly (21) via a setting member; The setting member comprises a driving impeller (221) fixedly connected to the side wall of the interference assembly (21).

4. The metal surface color-changing spraying device according to claim 3, characterized in that: The diffusion mechanism (3) includes: A driven component (31), wherein the driven component (31) is sleeved on the outer wall of the driving component (22) via a sleeve member; The sleeve comprises a driven rod (311) placed on the side wall of the driving assembly (22); An interference component (32), wherein the interference component (32) is placed inside the driven component (31) via a placement member; The placement member comprises an electrostatic release rod (321) placed inside the driven component (31).

5. The metal surface color-changing spraying device according to claim 4, characterized in that: The sleeve assembly (11) includes a delivery sleeve (112) sleeved inside a tightening sleeve (111), an inductive sensor (113) is placed on a side of the tightening sleeve (111) close to the spray gun (13), and a hollow groove (114) is provided inside the delivery sleeve (112); A conductive rod (17) is placed inside the spray gun (13) on a side close to the tightening sleeve (111), and the outer wall of the conductive rod (17) on a side close to the tightening sleeve (111) contacts the side wall of the inductive sensor (113). The inductive sensor (113) is nested in the side wall of the conveying sleeve (112), and the outer wall of the inductive sensor (113) on a side away from the conveying sleeve (112) is nested in the interior of the inductive sensor (113).

6. The metal surface color-changing spraying device according to claim 5, characterized in that: The slotting assembly (12) includes a boosting chamber (122) provided inside the conveying sleeve (112), the boosting chamber (122) being connected to the sliding groove (121), a conveying chamber (123) being provided on a side of the boosting chamber (122) away from the sliding groove (121), and the conveying chamber (123) being connected to the boosting chamber (122).

7. The metal surface color-changing spraying device according to claim 6, characterized in that: The interference assembly (21) includes a corrugated sleeve (211) fixedly connected to the inner wall of the conveying cavity (123); the interior of the sliding groove (121) is slidably connected to a sliding sleeve (212); the inner wall of the sliding sleeve (212) is fixedly connected to a sub-screening impeller (213); the side wall of the sub-screening impeller (213) is embedded in the interior of the hollow groove (114); the center of the sub-screening impeller (213) is hollow; and the interior of the sub-screening impeller (213) is slidably connected to a transmission pole (214); The transmission pole 214 slides inside the inductive sensor 113 at a side thereof close to the inductive sensor 113 .

8. The metal surface color-changing spraying device according to claim 7, characterized in that: The driving assembly (22) includes a driving impeller (221) fixedly connected to the side wall of the sub-screening impeller (213), the interior of the driving impeller (221) is hollow, an umbrella-shaped central shaft (222) is fixedly connected to the side of the sub-screening impeller (213) away from the driving impeller (221), a plurality of brackets (223) are fixedly connected to the outer wall of the umbrella-shaped central shaft (222), a through placement cavity (224) is provided inside the umbrella-shaped central shaft (222), and a plurality of L-shaped buckles (225) are fixedly connected to the side of the umbrella-shaped central shaft (222) away from the driving impeller (221); The transmission pole (214) slides in the inner wall of the placement cavity (224).

9. The metal surface color-changing spraying device according to claim 8, characterized in that: The driven assembly (31) includes a driven rod (311) arranged on the side wall of the umbrella-shaped central shaft (222); a plurality of buckle grooves (312) are provided on a side of the driven rod (311) close to the L-shaped buckle (225); a through groove (313) is provided on the side wall of the driven rod (311); and a second corrugated sleeve (314) is fixedly connected to the outer wall of the driven rod (311); The outer wall of the L-shaped buckle (225) is slidably connected to the interior of the buckle groove (312).

10. The metal surface color-changing spraying device according to claim 9, characterized in that: The interference component (32) includes an electrostatic release rod (321) movably connected to the inside of the through slot (313); an umbrella-shaped diffusion sleeve (322) is fixedly connected to a side of the through slot (313) close to the electrostatic release rod (321); and a split support sleeve (323) is slidably connected to an outer wall of a side of the driven rod (311) close to the buckle slot (312); The outer wall of the split support sleeve (323) is fixedly connected to the inner wall of the conveying cavity (123), and the side of the electrostatic release rod 321 close to the transmission pole 214 slides inside the transmission pole 214.

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