Movable manual electrostatic spray gun

Abstract

The utility model relates to the technical field of electrostatic spray guns, and particularly discloses a movable manual electrostatic spray gun which comprises a moving mechanism, a material storage mechanism is arranged on one side of the upper portion of the moving mechanism, and a protection mechanism is arranged on the other side of the upper portion of the moving mechanism. A paint spraying gun mechanism is connected to the upper end of the material storage mechanism and arranged on the moving mechanism. When paint spraying is conducted, a worker can step on the base, then the hand extends out through the hand passing opening, through the arrangement of the baffle, when the worker conducts paint spraying, paint brought by head-on airflow can be blocked, after the hand penetrates through the baffle, the worker can hold the spray gun by hand to conduct spraying operation, and a plurality of symmetrically-distributed blocking strip structures are installed on the inner side of the hand passing opening; the long-distance opening can be performed in a hand penetrating area, and the closing can be performed in a non-contact area of the hand, so that paint can be prevented from passing through a hand passing position.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic spray gun technology, and specifically discloses a portable manual electrostatic spray gun. Background Technology

[0002] Manual spray painting is a technique that uses a handheld spray gun to apply paint to the surface of an object. This method is widely used in automotive repair, furniture painting, architectural decoration, and other fields requiring fine finishing. The core tool for manual spray painting comes in different models and nozzle sizes to suit various paints and applications. The appropriate type of paint, such as acrylic paint or epoxy paint, is selected according to the needs.

[0003] For example, the utility model with authorization announcement number CN214599841U discloses a manual electrostatic powder spray gun, including a spray gun body. A locking assembly and a limiting assembly located on one side of the locking assembly are provided on the top of the spray gun body. The locking assembly consists of a support base, a sliding groove, a recess, a limiting plate, a push plate, a connecting plate, a support rod, and a spring. The limiting assembly consists of a baffle and a slot. This utility model uses a limiting plate that passes through the hanging ring of the spraying equipment and inserts into the slot. The limiting plate and the baffle cooperate to fix the spray gun body into the hanging ring of the spraying equipment, reducing the possibility of the spray gun body falling and being damaged during the movement of the spraying equipment, thus improving the stability of the spray gun body. The sliding groove, support rod, and connecting plate restrict the limiting plate, making it more stable during use. The spring increases the connection strength between the limiting plate and the slot, thereby improving the stability of the connection between the limiting plate and the slot. Currently, when painting furniture, for some irregular furniture structures, manual painting is generally carried out using spray gun equipment. However, most spray gun equipment only includes a movable paint tank and a handheld spray gun connected to the paint tank. During spraying, because the sprayed paint is relatively fine, it is easily affected by the oncoming airflow and adheres to the worker's body. If a large amount enters the mouth and nose, it will cause damage to the worker's health. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a portable manual electrostatic spray gun to solve the problem that when spraying with a handheld spray gun, if an oncoming airflow is generated in the spraying environment, the sprayed paint can easily flow back onto the worker, causing harm to the worker's health.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a movable manual electrostatic spray gun, including a moving mechanism, a material storage mechanism on one side above the moving mechanism, and a protective mechanism on the other side above the moving mechanism;

[0006] The upper end of the material storage mechanism is connected to a paint spray gun mechanism, which is mounted on the moving mechanism.

[0007] Furthermore, the moving mechanism includes a base, bearings distributed at the lower end of the base, a shaft running through the inside of the bearing, the surface of the shaft being interference-fitted with the inner ring wall of the bearing, a wheel fixed at the lower end of the shaft, and a handle provided on one side of the base.

[0008] Furthermore, the material storage mechanism includes a material tank, which is mounted on a base. The upper end of the material tank is covered with a cover plate, and a material extraction pipe is installed through the center of the cover plate. A filter element is installed at the lower end of the material extraction pipe, and the filter element and the material extraction pipe are connected by a flange.

[0009] Furthermore, a material pump is installed above the cover plate. The inlet of the material pump is flange-connected to the extraction pipe, and the outlet of the material pump is flange-connected to a feeding pipe. A guide sleeve is installed at the upper end of the base, and the outer wall of the feeding pipe penetrates the interior of the guide sleeve.

[0010] Furthermore, a waste discharge port is provided through the lower end of one side of the material tank, and a valve is provided on the surface of the waste discharge port. A feed port is provided through the upper end of one side of the material tank, and a valve is provided on the surface of the feed port.

[0011] Furthermore, the protective mechanism includes a baffle, which is perpendicular to the base and has two wings on both sides. A notch is provided at the middle of the lower end of the baffle, through which the feeding pipe extends outward. A limit sleeve is provided on the outward side of the baffle, and the feeding pipe also passes through the limit sleeve.

[0012] Furthermore, hand passages are provided on both sides of the baffle at the middle position, and baffles are provided on both sides of the hand passages. There is one group of baffles along the same horizontal plane and several groups distributed along the vertical position.

[0013] Furthermore, the baffle is provided with a viewing port in the middle position, which is located between two hand passages, and a glass plate is embedded inside the viewing port.

[0014] A servo cylinder is provided on the side of the baffle near the guide sleeve. The servo cylinder has a piston rod for extension and retraction inside. A mounting plate is fixed to the upper end of the piston rod. A connecting rod is provided at the lower end of the other side of the mounting plate. There are two connecting rods, which are symmetrically distributed along the viewing port. The ends of the two connecting rods are fixed to the same connecting plate. A scraper is fixed to the lower end of the connecting plate. The other end of the scraper is attached to the surface of the glass plate.

[0015] Furthermore, the spray gun mechanism includes a spray gun, the tail feed position of the spray gun is connected to the end flange of the feed tube, a support frame is provided on one side of the base, a support plate is fixedly installed on the upper end of the support frame, a gun holder is fixed on the upper end of the support plate by a bracket, the surface of the spray gun is mounted on the inner side of the gun holder, a limit seat is fixed at the lower end of the spray gun handle, a limit block is fixed at the upper end of the support plate, and the limit block and the limit seat are slidably inserted and connected.

[0016] The working principle and beneficial effects of this solution are as follows: 1. The base integrates the entire paint spray gun device. The wheels at the bottom of the base facilitate the movement of the entire structure. The brake structure on the wheels can position the base when it is moved to a designated position. The handle makes it easy for workers to push the entire structure to move. When the wheels move, they rotate in the bearing through the axle to achieve omnidirectional adjustment. When spraying, the worker can step on the base and then extend their hand through the hand opening. The baffle can block the paint brought by the airflow when the worker is spraying. After the hand passes through the baffle, the worker can hold the spray gun to perform the spraying operation. Several symmetrically distributed baffle structures installed on the inside of the hand opening can be fully open in the area where the hand passes through and closed in the area where the hand does not touch, thus preventing paint from passing through the hand opening. When spraying, the worker mainly observes through the viewing port. The glass plate installed in the viewing port can ensure normal observation by the worker while blocking the passage of paint through the viewing port.

[0017] 2. As described in point 1, when using the spray gun, the worker can put their hand through the hand opening and directly remove the spray gun from the gun holder. The gun holder mainly serves to support the spray gun. The limiting seat at the spray gun handle position aligns with the limiting block on the support plate, allowing for precise alignment when the spray gun is mounted on the gun holder, ensuring the stability of the spray gun's position. During spraying, if paint flows back and adheres to the glass plate, the power to the servo cylinder is turned on. The servo cylinder retracts through the piston rod, causing the scraper driven by the lower end of the connecting rod to contact and scrape the outward-facing side of the glass plate, similar to the effect of a windshield wiper. This scrapes away the adhered paint while it is still wet.

[0018] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment;

[0020] Figure 2 This is a front view of the overall structure of the embodiment;

[0021] Figure 3 This is a side view of the overall structure of the embodiment;

[0022] Figure 4 This is a schematic diagram of the material tank structure in an embodiment;

[0023] Figure 5 This is an enlarged schematic diagram of point A in the embodiment;

[0024] Figure 6 This is a schematic diagram of the spray gun structure in an embodiment.

[0025] The following are the markings in the attached diagram: 1. Moving mechanism; 2. Material storage mechanism; 3. Protective mechanism; 4. Spray gun mechanism; 10. Base; 11. Bearing; 12. Shaft; 13. Wheel; 14. Handle; 20. Material tank; 21. Cover plate; 22. Material extraction pipe; 23. Material pump; 24. Feeding pipe; 25. Filter element; 26. Guide sleeve; 2001. Waste discharge interface; 2002. Valve one; 2003. Feeding interface; 2004, Valve II; 30, Baffle; 31, Limit sleeve; 32, Hand access port; 33, Stop bar; 34, Glass plate; 35, Servo cylinder; 36, Mounting plate; 37, Connecting rod; 38, Connecting plate; 39, Inspection port; 310, Scraper; 311, Notch; 40, Spray gun; 41, Support frame; 42, Support plate; 43, Gun holder; 44, Limit seat; 45, Limit block. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] Example

[0028] like Figures 1 to 6 As shown, a movable manual electrostatic spray gun is disclosed, including a moving mechanism 1, a material storage mechanism 2 is provided on one side above the moving mechanism 1, a protective mechanism 3 is provided on the other side above the moving mechanism 1, and a spray gun mechanism 4 is connected to the upper end of the material storage mechanism 2. The spray gun mechanism 4 is disposed on the moving mechanism 1.

[0029] The moving mechanism 1 includes a base 10, which is a rectangular structure. Bearings 11 are distributed at the lower end of the base 10. The upper end of the bearings 11 is fixedly assembled to the lower end face of the base 10 by screws. There are four bearings 11, which are distributed along the four apex positions of the bottom of the base 10. A shaft 12 is inserted through the inside of the bearing 11. The surface of the shaft 12 is interference-fitted with the inner ring wall of the bearing 11. A wheel 13 is fixed at the lower end of the shaft 12. The bearings 11, shaft 12 and wheel 13 form a universal wheel structure. A brake structure is installed on the inner side of the frame of the wheel 13. The brake structure is a conventional threaded locking structure. A handle 14 is provided on one side of the base 10. The worker can push the base 10 structure to move it through the handle 14. When it moves to the designated position, it is positioned and stabilized by the brake structure inside the wheel frame of the wheel 13.

[0030] The material storage mechanism 2 includes a material tank 20, which is mounted on a base 10. The edge of the material tank 20 is fixed to the surface of the base 10 with screws. The upper end of the material tank 20 is covered by a cover plate 21, and the lower edge of the cover plate 21 is fixed to the end face of the material tank 20 with screws. A material extraction pipe 22 is inserted through the center of the cover plate 21, and the connection between the material extraction pipe 22 and the cover plate 21 is fixed by welding. A filter element 25 is installed at the lower end of the material extraction pipe 22, and the connection between the filter element 25 and the material extraction pipe 22 is made of hard stainless steel. It can extract the paint from the material tank 20 through the pump 23. When the material enters the extraction pipe 22, the filter element 25 can block particulate impurities and blocky paint, so as to avoid clogging the pipe for conveying paint and affecting the normal painting of the spray gun 40. A material pump 23 is set above the cover plate 21. The lower end of the material pump 23 is fixedly assembled with the cover plate 21 through the bracket. The inlet of the material pump 23 is flangedly connected to the extraction pipe 22. The outlet of the material pump 23 is flangedly connected to the feeding pipe 24. The feeding pipe 24 is a flexible hose structure made of rubber material. A guide sleeve 26 is set at the upper end of the base 10. The lower end of the outer wall of the guide sleeve 26 is fixed to the surface of the base 10 through the bracket. The outer wall of the feeding pipe 24 penetrates the interior of the guide sleeve 26.

[0031] A waste discharge port 2001 is provided through the lower end of one side of the material tank 20. The connection between the waste discharge port 2001 and the material tank 20 is fixed by welding. A valve 1 2002 is provided on the surface of the waste discharge port 2001. The valve core of the valve 1 2002 is embedded inside the waste discharge port 2001. A feed port 2003 is provided through the upper end of one side of the material tank 20. The connection between the feed port 2003 and the material tank 20 is fixed by welding. A valve 2 2004 is provided on the surface of the feed port 2003. The valve core of the valve 2 2004 is embedded inside the feed port 2003. Paint can be normally supplied to the material tank 20 through the feed port 2003. Waste liquid can be discharged through the waste discharge port 2001 when cleaning the material tank 20.

[0032] The protective mechanism 3 includes a baffle 30, which is set vertically to the base 10. Two wings are provided on both sides of the baffle 30. The lower end of the baffle 30 and the lower ends of the two wings are fixed to the surface of the base 10 by screws. A notch 311 is provided in the middle of the lower end of the baffle 30. The feeding pipe 24 extends outward through the notch 311. A limiting sleeve 31 is provided on the outward side of the baffle 30. The limiting sleeve 31 is fixed to the outer wall of the baffle 30 by a bracket. The feeding pipe 24 also passes through the limiting sleeve 31. The notch 311 facilitates the feeding pipe 24 to be led out from the baffle 30. The limiting sleeve 31 can provide auxiliary positioning for the middle position of the led-out part of the feeding pipe 24 to prevent it from being too loose and dragging and wearing on the ground.

[0033] Hand openings 32 are provided on both sides of the baffle 30 at the middle position. The hand openings 32 are rectangular and are set along both sides to allow both hands to pass through, facilitating hand operation of the spray gun 40 for painting furniture. They also work with the baffle 30 to protect workers from paint adhering to their skin when there is an oncoming airflow. Both sides of the hand openings 32 are provided with baffle strips 33. There are one set of baffle strips 33 on the same horizontal plane and several sets distributed vertically. When the hand passes through the hand opening 32, the baffle strips 33 can be moved to pass through. The baffle strips 33 can be opened in the area where the hand passes through, and in the area where the hand does not touch, they protect the hand opening 32 from paint passing through. The baffle strips 33 are made of silicone strip material, which is soft, easily deformable, and has a rebound effect.

[0034] A viewing port 39 is located in the middle of the baffle 30, between two hand access ports 32. The viewing port 39 allows workers to effectively observe the spray gun 40 while holding it. A glass plate 34, made of tempered glass, is embedded inside the viewing port 39 to prevent paint backflow while allowing normal observation. A servo cylinder 35 is located on the side of the baffle 30 near the guide sleeve 26. The outer wall of the servo cylinder 35 is fixedly mounted to the inner side of the baffle 30 via a bracket. The servo cylinder 35 combines pneumatic and electronic control technologies, achieving high-precision reciprocating motion through a servo control system. The servo cylinder 35 contains a piston rod for extension and retraction. A mounting plate 36 is fixed to the upper end of the plug rod. A connecting rod 37 is provided at the lower end of the other side of the mounting plate 36. The upper end of the connecting rod 37 is welded and fixed to the surface of the mounting plate 36. There are two connecting rods 37, which are symmetrically distributed along the viewing port 39. The ends of the two connecting rods 37 are fixed to the same connecting plate 38. A scraper 310 is fixed to the lower end of the connecting plate 38. The scraper 310 is made of rubber material. The other end of the scraper 310 is attached to the surface of the glass plate 34. The piston rod of the servo cylinder 35 reciprocates and extends, which can work with the connecting rod 37 to drive the scraper 310 to clean the side of the glass plate 34 facing the painting position, so as to prevent the paint from flowing back and adhering to the glass plate 34 and affecting the viewing line.

[0035] The paint spray gun mechanism 4 includes a spray gun 40. The rear feed position of the spray gun 40 is connected to the end flange of the feed pipe 24. The worker can pass his hand through the hand passage 32 and then hold the spray gun 40 to perform the painting operation. The material pump 23 can stably supply material. A support frame 41 is provided on one side of the base 10. One end of the support frame 41 is fixedly assembled to the surface of the base 10 by screws. A support plate 42 is fixedly installed on the upper end of the support frame 41. The upper end of the support plate 42 is fixed by a bracket. There is a gun holder 43, and the surface of the spray gun 40 is mounted on the inside of the gun holder 43. The gun holder 43 has a U-shaped structure. The lower end of the handle of the spray gun 40 is fixed with a limiting seat 44, and the upper end of the support plate 42 is fixed with a limiting block 45. The limiting block 45 and the limiting seat 44 slide and insert into each other. Through the erection of the gun holder 43 and the fixed insertion of the limiting block 45 and the limiting seat 44, the spray gun 40 can be placed stably after use, and at the same time, the safety of the spray gun 40 during the movement process is also guaranteed.

[0036] In practice

[0037] When it is necessary to spray paint the furniture with a handheld spray gun 40, the entire spray gun device can be integrated through the base 10. The wheels 13 at the bottom of the base 10 facilitate the movement of the entire structure. The brake structure on the wheels 13 can position the base 10 when it is moved to a designated position. The handle 14 makes it easy for workers to push the entire structure to move. When the wheels 13 move, they rotate in the bearing 11 through the axle 12 to achieve universal adjustment of the wheels 13.

[0038] When spraying paint, the worker can step on the base 10 and extend their hand through the hand opening 32. The baffle 30 can block the paint brought by the airflow when the worker is spraying paint. After the hand passes through the baffle 30, the worker can hold the spray gun 40 to spray. Several symmetrically distributed baffles 33 installed on the inside of the hand opening 32 can be fully open in the area where the hand passes through and closed in the area where the hand does not touch, thus preventing paint from passing through the hand opening 32. When spraying, the worker mainly observes through the viewing port 39. The glass plate 34 installed in the viewing port 39 can ensure normal observation for the worker while blocking the passage of paint through the viewing port 39.

[0039] When adding paint, open valve 2004 and add paint to the tank 20 through the feed port 2003. Then, turn on the power to the pump 23 so that the pump 23 can draw paint through the suction pipe 22. Then, the paint is sent to the feed pipe 24 through the pump 23. Finally, the switch on the spray gun 40 is turned on to realize the paint spraying. When the suction pipe 22 draws paint, the filter element 25 can block particulate impurities or blocky paint to avoid clogging the pipe and causing the spray gun 40 to jam.

[0040] When using the spray gun 40, the worker can put their hand through the hand opening 32 and directly remove the spray gun 40 from the gun holder 43. The gun holder 43 mainly serves to support the spray gun 40. The limiting seat 44 at the handle of the spray gun 40 aligns with the limiting block 45 on the support plate 42, which allows for fixed-point alignment when the spray gun 40 is mounted on the gun holder 43, ensuring the stability of the position of the spray gun 40 after being mounted on the gun holder 43. When the spray gun 40 is spraying, if the paint flows back and adheres to the glass plate 34, the power to the servo cylinder 35 is turned on. The servo cylinder 35 can reciprocate through the piston rod, so that the scraper 310 driven by the lower end of the connecting rod 37 can contact the outward side of the glass plate 34 for cleaning, similar to the effect of a windshield wiper, which can scrape off the adhered paint while it is not dry.

[0041] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A portable manual electrostatic spray gun, characterized in that: It includes a moving mechanism, a material storage mechanism is provided on one side above the moving mechanism, and a protective mechanism is provided on the other side above the moving mechanism; The upper end of the material storage mechanism is connected to a paint spray gun mechanism, which is mounted on the moving mechanism.

2. The portable manual electrostatic spray gun according to claim 1, characterized in that: The moving mechanism includes a base, bearings distributed at the lower end of the base, a shaft running through the inside of the bearing, the surface of the shaft being interference-fitted with the inner ring wall of the bearing, a wheel fixed at the lower end of the shaft, and a handle provided on one side of the base.

3. A portable manual electrostatic spray gun according to claim 2, characterized in that: The material storage mechanism includes a material tank, which is mounted on a base. The upper end of the material tank is covered with a cover plate, and a material extraction pipe is installed through the center of the cover plate. A filter element is installed at the lower end of the material extraction pipe, and the filter element is connected to the material extraction pipe via a flange.

4. A portable manual electrostatic spray gun according to claim 3, characterized in that: A material pump is installed above the cover plate. The inlet of the material pump is flangedly connected to the extraction pipe, and the outlet of the material pump is flangedly connected to the feeding pipe. A guide sleeve is installed at the upper end of the base, and the outer wall of the feeding pipe penetrates the inside of the guide sleeve.

5. A portable manual electrostatic spray gun according to claim 4, characterized in that: A waste discharge port is provided through the lower end of one side of the material tank, and a valve is provided on the surface of the waste discharge port. A feed port is provided through the upper end of one side of the material tank, and a valve is provided on the surface of the feed port.

6. A portable manual electrostatic spray gun according to claim 5, characterized in that: The protective mechanism includes a baffle, which is perpendicular to the base and has two wings on both sides. A notch is provided at the middle of the lower end of the baffle, through which the feeding pipe extends outward. A limit sleeve is provided on the outward side of the baffle, and the feeding pipe also passes through the limit sleeve.

7. A portable manual electrostatic spray gun according to claim 6, characterized in that: The baffle has hand openings at the middle position on both sides, and baffles are provided on both sides of the hand openings. There is one group of baffles at the same horizontal plane and several groups distributed at the vertical position.

8. A portable manual electrostatic spray gun according to claim 7, characterized in that: The baffle has a viewing port in the middle, which is located between two hand openings, and a glass plate is embedded inside the viewing port. A servo cylinder is provided on the side of the baffle near the guide sleeve. The servo cylinder has a piston rod for extension and retraction inside. A mounting plate is fixed to the upper end of the piston rod. A connecting rod is provided at the lower end of the other side of the mounting plate. There are two connecting rods, which are symmetrically distributed along the viewing port. The ends of the two connecting rods are fixed to the same connecting plate. A scraper is fixed to the lower end of the connecting plate. The other end of the scraper is attached to the surface of the glass plate.

9. A portable manual electrostatic spray gun according to claim 8, characterized in that: The spray gun mechanism includes a spray gun, the rear feed position of the spray gun is connected to the end flange of the feed tube, a support frame is provided on one side of the base, a support plate is fixedly installed on the upper end of the support frame, a gun holder is fixed on the upper end of the support plate by a bracket, the surface of the spray gun is mounted on the inner side of the gun holder, a limit seat is fixed at the lower end of the spray gun handle, and a limit block is fixed at the upper end of the support plate. The limit block and the limit seat slide into and connect.

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