A motor housing processing and painting device

Abstract

This invention relates to the field of spray painting equipment technology, specifically disclosing a spray painting device for processing motor housings. The device includes a base, an operating frame on the top of the base, and spray painting parts on the sides of the operating frame. Workpieces are arranged around the outer ring of the operating frame. It also includes a paint supply pipe, located inside the operating frame, with one end connected to the spray painting part and the other end connected to a paint storage tank located inside the base. The paint storage tank stores paint and supplies it to the spray painting part via the paint supply pipe. The device uses a timing component to sense the spray painting downtime in real time and automatically matches the stirring time and heating intensity accordingly. Precise matching of the stirring time ensures uniformity while minimizing disturbance to the paint, effectively delaying the aging process, reducing waste paint generation and raw material loss. The system automatically executes the corresponding stirring program and initial heating temperature based on the downtime, eliminating human error.

Description

Technical Field

[0001] This invention relates to the field of painting equipment technology, specifically to a painting equipment for processing motor housings. Background Technology

[0002] In the manufacturing fields of motors, home appliances, and auto parts, metal workpieces with outer shells often need to be coated with automatic spray painting equipment to improve corrosion resistance, aesthetics, and product added value. Existing spray painting equipment usually includes a paint storage tank, a stirring mechanism, a paint delivery pipeline, and a spray gun assembly. The stirring mechanism is used to prevent the paint from affecting the spraying quality due to pigment sedimentation, resin stratification, or viscosity changes during storage.

[0003] However, traditional spray painting equipment generally has a key drawback: most equipment uses fixed-cycle stirring (such as stirring for 30 seconds every 10 minutes) or continuous low-speed stirring. The stirring duration and frequency are preset values ​​and cannot be dynamically adjusted according to the actual downtime of the spray painting operation. In actual production, there are various reasons for downtime - it may be due to production change, equipment debugging, cycle time waiting or temporary failure, resulting in downtime ranging from a few seconds to several hours. If the downtime is short (such as 1-2 minutes), the paint has not yet clearly separated. If the standard stirring program is still executed at this time, it will not only waste electricity, but may also introduce air bubbles due to excessive stirring, affecting the density of the paint film. Conversely, if the downtime is long (e.g., more than 30 minutes), the fixed stirring time is often insufficient to fully redisperse the settled pigments, leading to problems such as color difference, particles, and poor atomization when restarting the painting process, which seriously reduces the coating quality. In addition, although some equipment has a manual stirring function, it relies on the operator's experience to judge whether stirring is needed and for how long, which is highly subjective and inconsistent, making it difficult to meet the process stability requirements of automated production lines. There is a lack of a linkage mechanism that can automatically sense the downtime and accurately match the stirring time accordingly, resulting in rough paint condition management. To address this, we propose a motor housing processing painting device. Summary of the Invention

[0004] The purpose of this invention is to provide a motor housing processing and painting device to solve the problem mentioned in the background art of lacking a linkage mechanism that can automatically sense the downtime and accurately match the stirring time accordingly.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a motor housing processing and painting device, comprising a base, an operating frame provided on the top of the base, a painting part for painting provided on the side of the operating frame, and a workpiece provided on the outer ring of the operating frame;

[0006] Also includes:

[0007] The system includes: a paint supply pipe, located inside the operating frame, with one end connected to the spraying component and the other end connected to a paint storage tank located inside the base; a stirring assembly, located inside the paint storage tank, rotatably connected to the inner wall of the tank, and a timing component, located on top of the tank, comprising a motor, a screw, and a moving plate; a timing mechanism, located on top of the tank, controlling the motor to drive the screw forward when spraying stops, causing the moving plate to move axially along the screw; and a mechanism to automatically time the spraying stop based on the moving plate's distance. When resuming spraying, the motor reverses direction and simultaneously activates the stirring assembly, matching the stirring time with the spraying stop time to ensure paint uniformity and coating quality.

[0008] The paint storage tank has a paint storage cavity inside to hold the paint. A connecting pipe is fixed to the top of the paint storage tank, with one end connected to the paint delivery pipe and the other end fixed to the paint inlet pipe, forming a passage for the paint to be transported from the paint storage tank to the painted parts.

[0009] The bottom of the paint inlet pipe is fixed with a paint inlet ball, and the surface of the paint inlet ball is provided with a paint inlet. The paint is introduced into the paint supply pipe through the paint inlet ball. The design of the paint inlet ball can reduce paint backflow and improve the stability of paint supply.

[0010] The outer wall of the stirring component is fixed with a heating element, and the outer wall of the heating element is fixed with a stirring rod. The stirring rod rotates and stirs the paint in the paint storage cavity to enhance the stirring effect and prevent pigment sedimentation.

[0011] The bottom of the agitator is fixed with a rotating rod, which is rotatably connected to the paint storage tank. A gear is fixed on the outer wall of the rotating rod to transmit driving power.

[0012] Among them, gear one is meshed with gear two on its side, and a rotating rod two is fixed at the center of gear two. One end of the rotating rod two is rotatably connected to the bottom of the paint storage tank, and the other end is fixedly connected to the output shaft of motor one. A support frame is fixed on the outer wall of motor one, and the top of the support frame is fixed to the bottom of the paint storage tank. The gear transmission system driven by motor one drives the stirring component to rotate, thereby achieving efficient stirring.

[0013] The top of the paint storage tank is fixed with a fixed box, and the inside of the fixed box has a storage cavity. The inner wall of the storage cavity is fixed with a second motor, and the output shaft of the second motor is fixedly connected to a screw. The end of the screw away from the second motor is rotatably connected to the inner wall of the storage cavity. The moving plate is threadedly connected to the outer wall of the screw, forming a screw-nut transmission structure, which is used to precisely control the movement distance to realize the timing function.

[0014] The movable plate has guide blocks fixed at both ends, and the sides of the guide blocks are slidably connected to the inner wall of the storage cavity to ensure that the movable plate moves smoothly along the screw axis and prevents deflection or jamming.

[0015] The bottom of the movable plate is fixed with a connecting plate, and the bottom of the inner wall of the storage cavity is fixed with a fixing plate. A trigger switch is fixed on the surface of the fixing plate. When the movable plate moves to the set position, the connecting plate triggers the trigger switch and sends a "timing end" signal, which is used to control the start or end of the stirring component.

[0016] The movable plate has a connecting plate two fixed to its top, and a slider is fixed to the top of the connecting plate two. The slider is slidably connected to the outer wall of the sliding variable resistance strip. The two ends of the sliding variable resistance strip are fixed by a fixing rod, and the end face of the fixing rod is fixed to the inner wall of the storage cavity. The resistance value is changed by the displacement of the slider on the sliding variable resistance strip.

[0017] The present invention has at least the following beneficial effects:

[0018] The device senses the duration of paint spraying downtime in real time through a timing component and automatically matches the stirring time and heating intensity accordingly. The longer the downtime, the greater the displacement of the moving plate and the more significant the position change of the slider on the sliding variable resistance strip, thereby increasing the heating temperature of the heating element. This design effectively compensates for the temperature drop and viscosity increase of the paint caused by prolonged static placement, ensuring good paint flow when restarting paint spraying, significantly improving coating uniformity, adhesion and surface smoothness, and avoiding spraying defects caused by paint layering or clumping.

[0019] The mixing time is proportional to the downtime, ensuring that the paint is remixed just right regardless of the downtime, maintaining its optimal spraying performance and avoiding defects such as color difference, particles, and sagging in the coating. Mixing is started only when needed, and the mixing time is precisely matched to the actual needs. For example, if the downtime is 1 minute, mix for 2 seconds; if the downtime is 3 minutes, mix for 1 minute. Energy is supplied on demand, avoiding waste. Long-term use can significantly reduce energy consumption and equipment wear. Excessive or unnecessary mixing will accelerate the evaporation of solvents in the paint, introduce air oxidation, and even damage the stability of the emulsion, shortening its effective service life.

[0020] By precisely matching the stirring time, uniformity is ensured while minimizing disturbance to the paint, effectively slowing down the aging process, reducing waste paint generation and raw material loss. Operators no longer need to rely on experience to judge "whether stirring is needed" or "how long to stir." The system automatically executes the corresponding stirring program based on the downtime, eliminating human error and improving production consistency. It is particularly suitable for continuous, unmanned production lines, enhancing the overall level of automation. In actual production, downtime can occur for various reasons such as parts replacement, maintenance, and cycle time adjustments, with varying durations. This design enables the equipment to adapt and adjust intelligently, responding to both short pauses and long standby periods, ensuring that painting is always in an ideal state upon restart, thus improving equipment flexibility and reliability.

[0021] The stirring assembly uses gear transmission and a bottom motor for stable power transmission, making it suitable for high-viscosity industrial paints. The paint inlet ball and the paint inlet form a one-way conduction structure, which effectively prevents paint backflow and ensures continuous paint supply. The stirring and heating operations are automatically started, stopped, and adjusted by the controller according to the downtime, without the need for manual intervention. This greatly reduces the complexity of operation, reduces the risk of human error, and improves production consistency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 This is a partial structural cross-sectional view of the base of the present invention;

[0024] Figure 3 This is a partial structural diagram of the base and paint storage tank of the present invention;

[0025] Figure 4 This is a partial structural cross-sectional view of the paint storage tank and stirring assembly of the present invention;

[0026] Figure 5 This is a partial structural schematic diagram of the stirring assembly of the present invention;

[0027] Figure 6 This is a partial structural cross-sectional view of the fixing box of the present invention;

[0028] Figure 7 This is a partial structural diagram of the timing component and the sliding variable resistance bar of the present invention.

[0029] In the diagram: 11. Base; 12. Operating frame; 13. Spray painting part; 14. Workpiece; 21. Paint supply pipe; 22. Paint storage tank; 23. Paint storage cavity; 24. Connecting pipe; 25. Paint inlet pipe; 26. Paint inlet ball; 27. Paint inlet; 3. Stirring assembly; 31. Stirring component; 32. Heating component; 33. Stirring rod; 34. Rotating rod one; 35. Gear one; 36. Gear two; 37. Rotating rod two; 38. Motor one; 39. Support frame; 4. Timing assembly; 41. Fixing box; 42. Storage cavity; 43. Motor two; 44. Screw; 45. Moving plate; 46. Connecting plate one; 47. Fixing plate; 48. Trigger switch; 49. Guide block; 51. Connecting plate two; 52. Sliding plate; 53. Sliding variable resistance bar; 54. Fixing rod. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] Please see Figures 1 to 7 The present invention provides a technical solution: a motor housing processing and painting device, including a base 11, an operating frame 12 is provided on the top of the base 11, and a painting part 13 for painting is provided on the side of the operating frame 12, and a workpiece 14 is provided on the outer ring of the operating frame 12.

[0033] Also includes:

[0034] A paint supply pipe 21 is installed inside the operating frame 12, with one end connected to the spraying component 13 and the other end connected to the paint storage tank 22, which is installed inside the base 11. The paint storage tank 22 stores paint and supplies it to the spraying component 13 via the paint supply pipe 21. A stirring assembly 3 is installed inside the paint storage tank 22 and includes a stirring element 31 rotatably connected to the inner wall of the paint storage tank 22. Rotating the stirring element 31 stirs the paint in the tank 22, preventing sedimentation or clumping. The timing component 4 is located on top of the paint storage tank 22. The timing component 4 includes a second motor 43, a screw 44, and a moving plate 45. When the paint spraying part 13 stops spraying, the second motor 43 is controlled to drive the screw 44 to rotate forward, so that the moving plate 45 moves along the axial direction of the screw 44. The duration of the paint spraying stop is determined based on the moving distance of the moving plate 45, so as to realize automatic timing. When it is time to spray paint again, the second motor 43 is controlled to reverse, and the stirring component 3 is started at the same time, so that the stirring time of the stirring component 31 matches the paint spraying stop time, ensuring the uniformity of the paint and the spraying quality.

[0035] The paint storage tank 22 has a paint storage cavity 23 inside for holding paint; a connecting pipe 24 is fixed to the top of the paint storage tank 22, and one end of the connecting pipe 24 is connected to the paint delivery pipe 21, and the other end is fixed to the paint inlet pipe 25, forming a passage for the paint to be transported from the paint storage tank 22 to the spray painting part 13.

[0036] A paint inlet ball 26 is fixed at the bottom of the paint inlet pipe 25. The surface of the paint inlet ball 26 is provided with a paint inlet port 27. The paint is introduced into the paint supply pipe 21 through the paint inlet port 27. The design of the paint inlet ball 26 can reduce paint backflow and improve paint supply stability.

[0037] When the motor housing needs to be painted, the paint first enters the paint ball 26 through the paint inlet 27. The paint ball 26 is designed as a one-way valve to ensure that the paint can flow smoothly into the paint inlet pipe 25 without backflow. Then, the paint passes through the connecting pipe 24 and the paint delivery pipe 21 in sequence, and finally enters the painting part 13. The painting part 13 starts the painting operation according to the controller instruction, and evenly sprays the paint on the surface of the workpiece 14 to complete one painting process.

[0038] A heating element 32 is fixed to the outer wall of the stirring element 31, and a stirring rod 33 is fixed to the outer wall of the heating element 32. The stirring rod 33 rotates and stirs the paint in the paint storage cavity 23 to enhance the stirring effect and prevent pigment sedimentation.

[0039] A rotating rod 34 is fixed to the bottom of the stirring component 31. The rotating rod 34 is rotatably connected to the paint storage tank 22. A gear 35 is fixed to the outer wall of the rotating rod 34 for transmitting driving power.

[0040] Gear 36 meshes with the side of gear 35. Rotating rod 37 is fixed at the center of gear 36. One end of rotating rod 37 is rotatably connected to the bottom of paint tank 22, and the other end is fixedly connected to the output shaft of motor 38. Support frame 39 is fixed to the outer wall of motor 38, and the top of support frame 39 is fixed to the bottom of paint tank 22. The gear transmission system driven by motor 38 drives the stirring component 31 to rotate, thereby achieving efficient stirring.

[0041] In order to maintain the uniformity of the paint in the paint storage tank 22 and prevent pigment from settling or clumping, the device is equipped with a stirring assembly 3. When stirring is required, the controller starts the motor 38. The motor 38 drives the rotating rod 37 to rotate, which in turn drives the gear 36 to rotate. The gear 36 meshes with the gear 35, so that the rotating rod 34 rotates synchronously. The rotating rod 34 is fixed to the bottom of the stirring component 31. Therefore, the stirring component 31 and the heating element 32 and stirring rod 33 fixed on its outer wall also rotate.

[0042] The three sets of stirring components 31 work together to form an all-round stirring force field in the paint storage cavity 23, ensuring that the paint is fully and evenly mixed and maintaining good fluidity and spraying performance.

[0043] A fixed box 41 is fixed to the top of the paint storage tank 22. The inside of the fixed box 41 is a storage cavity 42. A motor 43 is fixed to the inner wall of the storage cavity 42. The output shaft of the motor 43 is fixedly connected to the screw 44. The end of the screw 44 away from the motor 43 is rotatably connected to the inner wall of the storage cavity 42. A moving plate 45 is threaded to the outer wall of the screw 44, forming a screw-nut transmission structure for precisely controlling the movement distance to achieve the timing function.

[0044] Guide blocks 49 are fixed at both ends of the movable plate 45, and the sides of the guide blocks 49 are slidably connected to the inner wall of the storage cavity 42 to ensure that the movable plate 45 moves smoothly along the screw 44 axis and prevents deflection or jamming.

[0045] A connecting plate 46 is fixed to the bottom of the movable plate 45, and a fixing plate 47 is fixed to the bottom of the inner wall of the receiving cavity 42. A trigger switch 48 is fixed to the surface of the fixing plate 47. When the movable plate 45 moves to the set position, the connecting plate 46 triggers the trigger switch 48 and sends a "timing end" signal to control the start or end of the stirring assembly 3.

[0046] If the painting process needs to be paused due to process requirements or other reasons, the controller will automatically start the timing component 4. At this time, the motor 43 starts to work, driving the screw 44 to rotate forward, causing the moving plate 45 to move outward along the axis of the screw 44. As the time of stopping the painting increases, the displacement of the moving plate 45 gradually increases. Accurate timing can be achieved by monitoring the position change of the moving plate 45.

[0047] When preparing to restart the painting operation, the controller controls motor 43 to reverse, causing the moving plate 45 to move in the opposite direction. At the same time, the mixing component 3 is restarted to ensure that the paint does not separate or settle during the settling period. During this process, the connecting plate 46 at the bottom of the moving plate 45 moves synchronously with the moving plate 45 and gradually approaches the trigger switch 48 on the fixed plate 47. When the moving plate 45 returns to the initial position, the connecting plate 46 presses the trigger switch 48, and the trigger signal is fed back to the controller, which determines that the timing has ended and stops the mixing operation.

[0048] Example 2

[0049] A connecting plate 2 51 is fixed to the top of the movable plate 45, and a slider 52 is fixed to the top of the connecting plate 2 51. The slider 52 is slidably connected to the outer wall of the sliding variable resistance bar 53. The two ends of the sliding variable resistance bar 53 are fixed by a fixing rod 54, and the end face of the fixing rod 54 is fixed to the inner wall of the storage cavity 42. The resistance value is changed by the displacement of the slider 52 on the sliding variable resistance bar 53.

[0050] During the paint spraying pause, the timing component 4 not only records the downtime but also actively controls the paint condition. The moving plate 45 moves the connecting plate 51 on top of it synchronously, thereby driving the slider 52 to slide on the surface of the sliding variable resistance strip 53. The slider 52 is fixed on the top of the connecting plate 51 and slides in contact with the sliding variable resistance strip 53, forming a variable resistance structure. As the displacement of the moving plate 45 changes, the position of the slider 52 on the sliding variable resistance strip 53 changes accordingly, thereby outputting a corresponding resistance signal. The sliding variable resistance strip 53 is connected to the control circuit and is electrically connected to the heating unit connected to the heating element 32 in the stirring component 3 or indirectly linked through the control module. As the slider 52 moves a greater distance on the sliding variable resistance strip 53, the resistance value of the corresponding branch in the circuit changes, thereby adjusting the current or voltage supplied to the heating unit, causing the heating element 32 and its surrounding area to heat up.

[0051] After prolonged standing, paint may not only settle, but its viscosity may also increase due to a drop in ambient temperature, affecting the atomization effect of subsequent spraying. By dynamically increasing the heating temperature according to the downtime, the paint temperature drop can be effectively compensated and the viscosity reduced, ensuring that the paint is still in the optimal flow state when restarting spraying, thereby guaranteeing coating uniformity and adhesion.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for painting a motor housing, comprising: The base is provided with an operating frame at the top, and the side of the operating frame is provided with a paint spraying part for paint spraying, and the outer circle of the operating frame is provided with a workpiece; It is characterized in that it further comprises: A paint conveying pipe is arranged inside the operating frame, one end of the paint conveying pipe is connected with the paint spraying part, the other end of the paint conveying pipe is connected with a paint storage tank, the paint storage tank is arranged inside the base, is used for storing paint and supplying paint to the paint spraying part through the paint conveying pipe, a stirring assembly is arranged inside the paint storage tank, the stirring assembly comprises a stirring part, and the stirring part is rotationally connected to the inner wall of the paint storage tank, the paint in the paint storage tank is stirred by rotating the stirring part, a timing assembly is arranged at the top of the paint storage tank, the timing assembly comprises a second motor, a screw rod and a moving plate, when the paint spraying part stops spraying paint, the controller controls the second motor to drive the screw rod to rotate in the positive direction, the moving plate moves along the axial direction of the screw rod, the duration of the paint spraying stop is determined according to the moving distance of the moving plate, and automatic timing is realized; when the paint spraying is prepared to be restarted, the second motor is controlled to rotate in the reverse direction, and the stirring assembly is started at the same time, so that the stirring time of the stirring part matches the paint spraying stop time. The top of the paint storage tank is fixedly provided with a fixing box, an accommodation cavity is formed in the inside of the fixing box, a second motor is fixedly arranged on the inner wall of the accommodation cavity, and the output shaft of the second motor is fixedly connected with the screw rod, one end of the screw rod, away from the second motor, is rotationally connected to the inner wall of the accommodation cavity, the moving plate is screwedly connected to the outer wall of the screw rod, the bottom of the moving plate is fixedly provided with a first connecting plate, the bottom of the inner wall of the accommodation cavity is fixedly provided with a fixed plate, and the surface of the fixed plate is fixedly provided with a trigger switch. During the paint spraying process, if the paint spraying needs to be temporarily stopped due to process requirements or other reasons, the controller automatically starts the timing assembly, at this time, the second motor starts to work and drives the screw rod to rotate in the positive direction, so that the moving plate moves outward along the axial direction of the screw rod, and as the paint spraying stop time increases, the displacement of the moving plate gradually increases, and accurate timing can be realized by monitoring the position change of the moving plate. When the paint spraying operation is prepared to be restarted, the second motor is controlled to rotate in the reverse direction, so that the moving plate moves reversely, and the stirring assembly is restarted at the same time, so as to ensure that the paint does not appear to be stratified or precipitated during the standing period, in the process, the first connecting plate at the bottom of the moving plate moves synchronously with the moving plate and gradually approaches the trigger switch on the fixed plate, when the moving plate returns to the initial position, the first connecting plate presses the trigger switch, and a trigger signal is fed back to the controller, so that it is judged that the timing is ended and the stirring operation is stopped.

2. The apparatus according to claim 1, wherein: The inside of the paint storage tank is provided with a paint storage cavity, the top of the paint storage tank is fixedly provided with a connecting pipe, one end of the connecting pipe is connected with the paint conveying pipe, and the other end of the connecting pipe is fixedly provided with an inlet pipe, so as to form a channel for conveying paint from the paint storage tank to the paint spraying part.

3. The apparatus according to claim 2, wherein: The bottom of the inlet pipe is fixedly provided with an inlet ball, the surface of the inlet ball is provided with an inlet opening, and the paint is introduced into the paint conveying pipe through the inlet opening.

4. The apparatus according to claim 1, wherein: The outer wall of the stirring part is fixedly provided with a heating part, the outer wall of the heating part is fixedly provided with a stirring rod, and the stirring rod rotates in the paint storage cavity to stir the paint.

5. The apparatus according to claim 1, wherein: The bottom of the stirring part is fixedly provided with a first rotating rod, the first rotating rod is rotationally connected with the paint storage tank, and the outer wall of the first rotating rod is fixedly provided with a first gear. The bottom of the moving plate is fixedly provided with a first connecting plate, the bottom of the inner wall of the accommodation cavity is fixedly provided with a fixed plate, and the surface of the fixed plate is fixedly provided with a trigger switch.

6. The apparatus according to claim 5, wherein: The side of gear one is engaged with gear two, the center of gear two is fixed with rotating rod two, one end of rotating rod two is rotatably connected with the bottom of paint storage tank, the other end is fixedly connected with the output shaft of motor one, the outer wall of motor one is fixed with supporting frame, and the top of supporting frame is fixed on the bottom of paint storage tank.

7. The apparatus of claim 1, wherein: The two ends of the moving plate are fixedly provided with guide blocks which are slidably connected to the inner walls of the accommodating cavities.

8. The apparatus of claim 1, wherein: The top of the moving plate is fixedly provided with a second connecting plate, the top of the second connecting plate is fixedly provided with a sliding sheet which is slidably connected to the outer wall of the sliding variable resistance strip, the two ends of the sliding variable resistance strip are fixedly connected through fixing rods, and the end faces of the fixing rods are fixed to the inner walls of the accommodating cavities.

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