Multi-station rotor surface automatic painting machine

Abstract

The invention discloses a multi-station rotor surface automatic painting machine which comprises a painting assembly, a spraying assembly and a control assembly. Comprising a painting box, an opening part formed in the top of the painting box, multiple sets of paint storage boxes arranged at the bottom of the inner wall of the painting box and located below the opening part, two sets of paint feeding rollers rotationally arranged in the paint storage boxes and painting rollers rotationally arranged in the paint storage boxes and located above the paint feeding rollers. Through the design of the multiple sets of paint storage boxes and the painting rollers, multiple rotors can be painted at the same time, compared with single-station equipment, the total time length of single-time operation is greatly shortened, the unit time capacity is improved, paint liquid of different colors can be injected into different paint storage boxes, paint does not need to be replaced frequently, a paint pool does not need to be cleaned frequently, the painting requirement of the rotors of multiple colors is met, and the production efficiency is improved. Long-time shutdown caused by color changing of traditional equipment is avoided, and production flexibility is improved.

Description

Technical Field

[0001] This invention relates to the field of rotor processing technology, and in particular to an automatic coating machine for multi-station rotor surfaces. Background Technology

[0002] After the motor rotor is machined, it needs to be coated with a layer of anti-rust paint to prevent the rotor surface from rusting and affecting the overall quality and performance of the motor. The industry practice is to apply a layer of anti-rust paint to the rotor surface using various processes such as brushing or rolling after the rotor is machined. Among them, the rolling process is the most efficient. However, there are two drawbacks. First, current rolling machines are all single-station machines. Motor factories usually use different colors of surface paint to distinguish multiple series of products. This requires frequent paint changes or the use of multiple rolling machines. Second, the paint in the machine is in an open environment and dries quickly, requiring a lot of time to change the paint tank and clean it. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides the following technical solution: A multi-station automatic rotor surface coating machine, comprising: A painting assembly includes a painting box, an opening at the top of the painting box, multiple sets of paint storage boxes located at the bottom of the inner wall of the painting box and below the opening, two sets of paint delivery rollers rotatably disposed in the paint storage boxes, and a painting roller rotatably disposed in the paint storage boxes and above the paint delivery rollers. The paint delivery roller and the painting roller are in contact, and the lower part of the paint delivery roller is immersed in the paint liquid in the paint storage boxes. A cylinder is fixedly disposed on the top of the inner wall of the painting box, and a mounting plate is fixedly connected to the bottom of the cylinder. The bottom of the mounting plate is provided with a placement rack adapted to the position and number of paint storage boxes. The rotor is placed between the two sets of painting rollers by the placement rack. The exhaust assembly includes an annular frame disposed at the edge of the opening, an exhaust pipe connected to the annular frame and facing the opening, a connecting pipe connected to the annular frame, a fan mounted on the connecting pipe, and a filter connected to the air outlet of the connecting pipe. The sealing assembly includes a sealing plate that is slidably disposed on the paint box and adapted to the opening, and a second cylinder installed on the top of the paint box, wherein the output end of the second cylinder is connected to the sealing plate. An opening component is embedded in the paint box and located on one side of the sealing plate. The opening component is electrically connected to the fan. When the sealing plate moves above the opening component, the fan starts.

[0004] As an improvement to the above technical solution, the opening component includes a movable column that is movably inserted into the top of the paint box, a push switch electrically connected to a fan is installed inside the paint box and below the movable column, and a spring is wound around one end of the movable column inside the paint box.

[0005] As an improvement to the above technical solution, a driving component is also included. The driving component includes a driven wheel fixedly sleeved on the end of the paint feeding roller, a motor located on the side wall of the paint box and between the two sets of paint feeding rollers, and a driving wheel fixedly sleeved on the output end of the motor. The driving wheel and the driven wheel are meshed together.

[0006] As an improvement to the above technical solution, the filter element includes two sets of filter boxes fixedly installed on the side wall of the paint box. The bottom of the filter box is fixedly connected to a cover by bolts, and a filter element is snapped onto the top of the cover. An air outlet is opened on the cover and inside the filter element.

[0007] As an improvement to the above technical solution, a fixed pipe is provided between the two sets of filter boxes. A partition is fixedly provided inside the fixed pipe along its extension direction. The partition divides the cavity of the fixed pipe into two sets of sub-cavities. The bottom of the connecting pipe is connected to the two sets of sub-cavities. A movable rod is inserted into the fixed pipe along its width direction. The movable rod has a through hole inside the fixed pipe. Driving the movable rod to move and switch the position of the through hole, the bottom of the two sets of cavities is connected to the two sets of filter boxes one by one through pipes, so as to control the connecting pipe to be switched to be connected to one of the two sets of pipes.

[0008] As an improvement to the above technical solution, the top of the two sets of filter boxes is fixedly connected to a fixed frame, and the two ends of the moving rod pass through the side wall of the fixed frame and extend into the interior of the fixed frame. A piston is fixedly connected to the end of the moving rod that extends into the interior of the fixed frame. The interior of the filter box is connected to the interior of the fixed frame through a connecting hole. A spring is wound around the surface of the moving rod and located in one of the fixed frames.

[0009] As an improvement to the above technical solution, a limiting disk is provided on the surface of the moving rod and in both sets of sub-cavities.

[0010] The beneficial effects of this invention are: The design of multiple sets of paint storage boxes and paint rollers supports simultaneous painting of multiple rotors. Compared with single-station equipment, it significantly shortens the total time of a single operation and increases the output per unit time. Different paint storage boxes can be filled with different colors of paint, eliminating the need for frequent paint changes and paint tank cleaning. It is suitable for multi-color rotor painting needs, avoiding long downtime caused by color changes in traditional equipment and improving production flexibility. The fan creates negative pressure inside the paint coating box through the annular frame and exhaust pipe, drawing in paint mist near the opening in real time. During the painting stage, the sealing plate completely covers the opening, preventing paint mist from overflowing and polluting the external environment. It also protects operators from paint mist. Through the linkage between the sealing plate position and the opening component, the fan automatically starts when ventilation is needed (for loading / unloading) and automatically stops when ventilation is not needed (for painting and sealing), avoiding ineffective operation and reducing energy waste while ensuring environmental protection. Attached Figure Description

[0011] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a top view of the overall partial structure of the present invention; Figure 3 This is a schematic diagram of the structure of the filter element of the present invention; Figure 4 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B.

[0012] Reference numerals: 10. Paint box; 11. Opening; 12. Paint storage box; 13. Paint delivery roller; 14. Paint coating roller; 15. Placement rack; 16. Cylinder 1; 20. Filter element; 201. Filter box; 202. Cover; 203. Air outlet; 204. Filter element; 205. Fixing frame; 206. Moving rod; 2061. Through hole; 207. Connecting hole; 208. Piston; 21. Annular frame; 22. Fan; 23. Connecting pipe; 24. Fixing pipe; 241. Partition; 30. Sealing plate; 31. Cylinder 2; 40. Moving column; 41. Press switch; 42. Spring 2. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0014] A multi-station automatic rotor surface coating machine, comprising: The painting assembly includes a painting box 10, an opening 11 at the top of the painting box 10, multiple sets of paint storage boxes 12 located at the bottom of the inner wall of the painting box 10 and below the opening 11, two sets of paint feeding rollers 13 rotatably disposed in the paint storage boxes 12, and a painting roller 14 rotatably disposed in the paint storage boxes 12 and above the paint feeding rollers 13. The paint feeding rollers 13 and the painting roller 14 are in contact, and the lower part of the paint feeding rollers 13 is immersed in the paint liquid in the paint storage boxes 12. A cylinder 16 is fixedly disposed on the top of the inner wall of the painting box 10. A mounting plate is fixedly connected to the bottom of the cylinder 16. A placement rack 15 adapted to the position and number of paint storage boxes 12 is disposed at the bottom of the mounting plate. The rotor is placed between the two sets of painting rollers 14 by means of the placement rack 15. The exhaust assembly includes an annular frame 21 disposed at the edge of the opening 11, an exhaust pipe connected to the annular frame 21 and facing the opening 11, a connecting pipe 23 connected to the annular frame 21, a fan 22 mounted on the connecting pipe 23, and a filter 20 connected to the air outlet of the connecting pipe 23. The sealing assembly includes a sealing plate 30 that is slidably disposed on the paint box 10 and adapted to the opening 11, and a second cylinder 31 installed on the top of the paint box 10, wherein the output end of the second cylinder 31 is connected to the sealing plate 30. An opening component is embedded in the paint box 10 and located on one side of the sealing plate 30. The opening component is electrically connected to the fan 22. When the sealing plate 30 moves above the opening component, the fan 22 is started.

[0015] Specifically, when the device is in its initial state, the sealing plate 30 in the sealing assembly opens the opening 11 under the action of the cylinder 31, fully exposing the opening 11 at the top of the paint box 10, facilitating rotor loading by the operator. At this time, since the sealing plate 30 is located above the opening assembly, the fan 22 in the exhaust assembly is in the on state. When the exhaust assembly is working, the fan 22 generates negative pressure on the annular frame 21 through the connecting pipe 23. The annular frame 21 is located at the edge of the opening 11, and the exhaust pipe connected to its inner side faces the inside of the opening 11, forming a stable negative pressure environment inside the paint box 10, constructing a paint mist suction channel, and preventing paint mist from leaking into the external environment. The paint delivery roller 13 and the paint coating roller 14 in the paint coating assembly are not yet started. Sufficient paint liquid has been pre-filled into the paint storage box 12, and the paint level ensures that the lower part of the paint delivery roller 13 can be completely immersed in the paint liquid, preparing the paint for subsequent painting operations. The operator places the rotors to be painted one by one on the placement rack of the painting assembly. Cylinder 16 drives the placement rack to place the rotors between the two sets of painting rollers 14, realizing the positioning of the rotors. At this time, the axis of the rotor is parallel to the axis of the painting roller 14, ensuring that the rotor surface can evenly contact the painting rollers during the subsequent painting process. After the rotors are loaded, cylinder 2 31 drives the sealing plate 30 connected to its output end to slide along the top of the paint box 10 until the sealing plate 30 completely covers the opening 11 at the top of the paint box 10, realizing the sealing of the inside of the paint box 10. At the same time, when the opening 11 is completely sealed, the sealing plate 30 disengages from the opening assembly, the opening assembly is closed, and the external force drives the paint delivery roller 13 to rotate. When the paint delivery roller 13 rotates, its lower part is immersed in the paint in the paint storage box 12, adhering the paint to the surface of the paint delivery roller 13. Since the paint delivery roller 13 is in contact with the paint coating roller 14, the paint coating roller 14 rotates synchronously with the paint delivery roller 13 under the friction of the paint delivery roller 13. The paint on the surface of the paint delivery roller 13 is evenly transferred to the surface of the paint coating roller 14, achieving uniform painting of the paint coating roller 14. As the paint coating roller 14 rotates under the action of the paint delivery roller 13, the rotor begins to rotate around its own axis under the action of the friction of the paint coating roller 14. The surface of the rotor is in continuous contact with the surface of the paint coating roller 14, and the surface of the paint coating roller 14... Paint is evenly applied to the outer surface of the rotor, achieving automated painting. During the painting process, the paint tank 10 is sealed, effectively preventing paint mist from escaping outside. After the preset painting time, the paint feeding roller 13 and the paint coating roller 14 stop rotating synchronously. Then, cylinder 16 starts, driving the mounting plate to move upward. The placement frame drives the painted rotor to rise synchronously until the rotor completely disengages from the paint coating roller 14 and returns to the initial loading height, preventing the undried paint layer on the rotor surface from being scratched. Next, cylinder 21 is activated, driving the sealing plate 30 to move. Before the opening 11 is opened, the sealing plate moves above the opening assembly, and the fan 22 starts, continuously sucking up the paint mist near the opening 11.The fan 22 is started and stopped automatically by changing the position of the sealing plate 30 (the fan 22 turns on when the sealing plate 30 is on and off when it is off), achieving automatic start-up when ventilation is needed and automatic stop-up when ventilation is not needed. This prevents paint mist from polluting the external environment. Operators can then remove the painted rotor from the rack, completing one painting cycle. After removing the rotor, the equipment can immediately begin the next cycle, repeating the above process. Multiple sets of paint storage boxes not only enable continuous multi-station painting but also allow for the storage of different colors of paint. Furthermore, the sealed interior of the paint storage box 10 effectively avoids the problem of paint drying too quickly in an open environment, which would otherwise require significant time for paint tank replacement and cleaning.

[0016] In one embodiment, the opening assembly includes a movable column 40 movably inserted into the top of the paint box 10. A push-button switch 41, electrically connected to the fan 22, is installed inside the paint box 10 and below the movable column 40. A spring 42 is wound around the surface of the movable column 40 and at one end inside the paint box 10. When the sealing plate 30 moves above the opening assembly under the drive of the cylinder 31, the bottom of the sealing plate 30 presses against the top of the movable column 40, forcing the movable column 40 to move downwards and compress the spring 42. At this time, the bottom of the movable column 40 contacts the push-button switch 41 and triggers the switch to close, allowing the fan 22 to open. When the circuit is connected, the fan 22 starts and begins to suck up the paint mist. When the sealing plate 30 moves to completely cover the opening 11, the sealing plate 30 disengages from the moving column 40. At this time, the compressed spring 42 releases its elasticity, pushing the moving column 40 to return to its original position. The bottom of the moving column 40 separates from the press switch 41, and the press switch 41 automatically disconnects. The circuit of the fan 22 is cut off, and the fan 22 stops running. The position of the sealing plate 30 directly controls the state of the fan 22, ensuring that the fan 22 is turned on when loading / unloading (when the opening 11 is exposed) and turned off when painting (when the opening 11 is sealed), perfectly matching the operating rhythm of the equipment.

[0017] In one embodiment, a driving component is also included, comprising a driven wheel fixedly sleeved at the end of the paint delivery roller 13, a motor located on the side wall of the paint box 10 between the two sets of paint delivery rollers 13, and a driving wheel fixedly sleeved at the output end of the motor. The driving wheel and the driven wheel are meshed together. When the device enters the painting stage, the motor starts and drives the driving wheel at the output end to rotate. The driving wheel and the driven wheels at the ends of the two sets of paint delivery rollers 13 are meshed together. The rotation of the driving wheel drives the two driven wheels to rotate synchronously through the interaction of the gear teeth, thereby driving the two sets of paint delivery rollers 13 to rotate in a set direction.

[0018] In one embodiment, the filter element 20 includes two sets of filter boxes 201 fixedly disposed on the side wall of the paint box 10. The bottom of the filter box 201 is fixedly connected to a cover 202 by bolts. The top of the cover 202 is snapped with a filter element 204. An air outlet 203 is provided on the cover 202 and inside the filter element 204.

[0019] In one embodiment, a fixed pipe 24 is provided between the two sets of filter boxes 201. A partition 241 is fixedly provided inside the fixed pipe 24 and along its extension direction, dividing the cavity of the fixed pipe 24 into two sets of sub-cavities. The bottom of the connecting pipe 23 communicates with the two sets of sub-cavities. A movable rod 206 is movably inserted into the fixed pipe 24 along its width direction. The movable rod 206 has a through hole 2061 inside the fixed pipe 24. Driving the movable rod 206 moves the through hole 2061 to switch the position of the through hole 2061. The bottoms of the two sets of cavities are respectively connected to the two sets of filter boxes through pipes, so as to control the connecting pipe to switchably connect to the two sets of pipes. In this configuration, when the moving rod 206 is in a certain position, its internal through hole 2061 is only connected to one set of sub-cavities of the fixed pipe 24. At this time, the paint mist airflow drawn in by the connecting pipe 23 can only enter one set of filter boxes 201 through this sub-cavity and the corresponding connecting pipe. After purification, it is discharged. The other set of filter boxes 201 is in standby state. When the filter box 201 is switched, the moving rod 206 is driven to move along the width direction of the fixed pipe 24, so that the through hole 2061 is switched from the currently connected sub-cavity position to another set of sub-cavities. At this time, the airflow channel between the connecting pipe 23 and the original filter box 201 is cut off, and it is connected to another set of sub-cavities and the corresponding filter box 201, thereby realizing the switching of the filter box 201.

[0020] In one embodiment, the tops of the two sets of filter boxes 201 are fixedly connected to a fixed frame 205. The two ends of the moving rod 206 penetrate the sidewalls of the fixed frame 205 and extend into the interior of the fixed frame 205. A piston 208 is fixedly connected to one end of the moving rod 206 extending into the fixed frame 205. The interior of the filter box 201 communicates with the interior of the fixed frame 205 through a connecting hole 207. A spring is wound around the surface of the moving rod 206 within one set of fixed frames 205. Initially, the through hole 2061 of the moving rod 206 communicates with the left sub-cavity, the left filter box 201 is in operation, and the right filter box 201 is in standby mode. As the left filter box 201 continuously filters paint mist, the particles in the paint mist gradually adhere to the surface of the filter element 204. As the blockage worsens, the blockage of the filter element 204 causes an increase in airflow resistance inside the left filter box 201. The air pressure in the left filter box 201 is synchronously transmitted to the top left fixed frame 205 through the connecting hole 207. In the initial state, the pressure on the left piston 208 is in equilibrium with the elastic force of the first spring. When the air pressure increases, the air pressure exceeds the elastic force of the first spring, and the equilibrium is broken. The gas pressure pushes the left piston 208 to move to the right, causing the moving rod 206 to move to the right simultaneously. At this time, the first spring is further compressed, accumulating elastic potential energy. The through hole 2061 inside the moving rod 206 moves to the sub-cavity on the right side of the fixed tube 24. The right airflow channel begins to open, and the left airflow channel closes. The right filter box 201 begins to work. The switching action is automatically triggered by the degree of blockage of the filter element 204 without the need for external control signals.

[0021] In one embodiment, the surface of the moving rod 206 and the two sets of sub-cavities are provided with limiting disks. When the moving rod 206 moves to the right under the push of air pressure, the limiting disk in the left sub-cavity moves to the right synchronously with the moving rod 206 until it contacts the surface of the partition 241. At this time, the limiting disk is blocked by the partition 241, and the moving rod 206 cannot continue to move to the right, ensuring that the through hole 2061 is exactly aligned with the right sub-cavity. This avoids misalignment between the through hole 2061 and the sub-cavity due to excessive movement. When the moving rod 206 needs to switch from the right working state back to the left, the moving rod 206 moves to the left, and the limiting disk in the right sub-cavity moves to the left accordingly, eventually contacting the surface of the partition 241, limiting the leftward movement limit position of the moving rod 206, and ensuring that the through hole 2061 is located in the left sub-cavity.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A multi-station automatic rotor surface painting machine, characterized in that, The application relates to a paint spraying device. The paint spraying device comprises a paint spraying box (10), an opening part (11) arranged on the top of the paint spraying box (10), a plurality of paint storage boxes (12) arranged on the inner wall bottom of the paint spraying box (10) and located below the opening part (11), two groups of paint feeding rollers (13) rotatably arranged in the paint storage boxes (12), and paint spraying rollers (14) rotatably arranged in the paint storage boxes (12) and located above the paint feeding rollers (13), the paint feeding rollers (13) and the paint spraying rollers (14) are attached to each other, the lower part of the paint feeding rollers (13) is immersed in paint liquid in the paint storage boxes (12), a cylinder (16) is fixedly arranged on the inner wall top of the paint spraying box (10), the bottom of the cylinder (16) is fixedly connected with a mounting plate, the bottom of the mounting plate is provided with a placing rack (15) matched with the positions and numbers of the paint storage boxes (12), and a rotor is placed between the two groups of paint spraying rollers (14) by the placing rack (15). The paint spraying device further comprises an air extraction assembly, which comprises a ring frame (21) arranged at the edge of the opening part (11), an air extraction pipe (22) communicated with the ring frame (21) and arranged towards the opening part (11), a connecting pipe (23) communicated with the ring frame (21), a fan (22) mounted on the connecting pipe (23), and a filter (20) communicated with the air outlet end of the connecting pipe (23). The paint spraying device further comprises a sealing assembly, which comprises a sealing plate (30) slidably arranged on the paint spraying box (10) and matched with the opening part (11), and a cylinder (31) mounted on the top of the paint spraying box (10), wherein the output end of the cylinder (31) is connected with the sealing plate (30). The paint spraying device further comprises an opening assembly, which is embedded on the paint spraying box (10) and located on one side of the sealing plate (30), and is electrically connected with the fan (22), so that the fan (22) is started when the sealing plate (30) moves above the opening assembly.

2. A multi-station automatic rotor surface painting machine according to claim 1, characterized in that: The opening assembly comprises a moving column (40) movably inserted into the top of the paint spraying box (10), a pressing switch (41) electrically connected with the fan (22) is mounted on the inside of the paint spraying box (10) and located below the moving column (40), and a spring (42) is wound on one end of the surface of the moving column (40) and located inside the paint spraying box (10).

3. A multi-station automatic rotor surface painting machine as claimed in claim 1, characterized in that: The paint spraying device further comprises a driving member, which comprises a driven wheel fixedly sleeved on the end of the paint feeding roller (13), a motor mounted on the side wall of the paint spraying box (10) and located between the two groups of paint feeding rollers (13), and a driving wheel fixedly sleeved on the output end of the motor and meshedly connected with the driven wheel.

4. A multi-station rotor surface automatic painting machine according to claim 1, characterized in that: The filter (20) comprises two groups of filter boxes (201) fixedly arranged on the side wall of the paint spraying box (10), a cover (202) fixedly connected with the bottom of the filter box (201) through bolts, a filter core (204) clampedly connected with the top of the cover (202), and an air outlet hole (203) arranged in the cover (202) and located in the filter core (204).

5. A multi-station automatic rotor surface painting machine as claimed in claim 4, characterized in that: The two groups of filter boxes (201) are provided with a fixed pipe (24), the fixed pipe (24) is provided with a partition (241) inside and along the extension direction of the fixed pipe (24), the partition (241) divides the cavity of the fixed pipe (24) into two groups of sub-cavities, the bottom of the connecting pipe (23) is in communication with the two groups of sub-cavities, a moving rod (206) is movably inserted into the fixed pipe (24) along the width direction of the fixed pipe (24), the moving rod (206) is provided with a through hole (2061) inside the fixed pipe (24), the moving rod (206) is driven to move, the position of the through hole (2061) is switched, the bottom of the two groups of cavities is respectively connected with two groups of the filter boxes one by one through pipes to control the connecting pipe to be switchably communicated with one of the two groups of pipes.

6. A multi-station rotor surface automatic painting machine according to claim 5, characterized in that: The top of the two groups of filter boxes (201) is fixedly connected with a fixed frame (205), both ends of the moving rod (206) respectively penetrate the side wall of the fixed frame (205) and extend to the inside of the fixed frame (205), one end of the moving rod (206) extending to the inside of the fixed frame (205) is fixedly connected with a piston (208), the inside of the filter box (201) is in communication with the inside of the fixed frame (205) through a communication hole (207), and a spring one is wound on the surface of the moving rod (206) and located in one of the fixed frames (205).

7. A multi-station rotor surface automatic painting machine according to claim 6, characterized in that: The surface of the moving rod (206) and located in the two groups of sub-cavities is provided with a limiting disc.

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